diff options
Diffstat (limited to 'lib/libc/posix1e')
58 files changed, 7207 insertions, 0 deletions
diff --git a/lib/libc/posix1e/Makefile.inc b/lib/libc/posix1e/Makefile.inc new file mode 100644 index 0000000..99f58e3 --- /dev/null +++ b/lib/libc/posix1e/Makefile.inc @@ -0,0 +1,89 @@ +# $FreeBSD$ + +.PATH: ${.CURDIR}/posix1e + +SRCS+= acl_calc_mask.c \ + acl_copy.c \ + acl_delete.c \ + acl_delete_entry.c \ + acl_entry.c \ + acl_free.c \ + acl_from_text.c \ + acl_get.c \ + acl_init.c \ + acl_perm.c \ + acl_set.c \ + acl_support.c \ + acl_to_text.c \ + acl_valid.c \ + extattr.c \ + mac.c \ + mac_exec.c \ + mac_get.c \ + mac_set.c + +SYM_MAPS+=${.CURDIR}/posix1e/Symbol.map + +MAN+= acl.3 \ + acl_add_perm.3 \ + acl_calc_mask.3 \ + acl_clear_perms.3 \ + acl_copy_entry.3 \ + acl_create_entry.3 \ + acl_delete.3 \ + acl_delete_entry.3 \ + acl_delete_perm.3 \ + acl_dup.3 \ + acl_free.3 \ + acl_from_text.3 \ + acl_get.3 \ + acl_get_entry.3 \ + acl_get_permset.3 \ + acl_get_perm_np.3 \ + acl_get_qualifier.3 \ + acl_get_tag_type.3 \ + acl_init.3 \ + acl_set.3 \ + acl_set_permset.3 \ + acl_set_qualifier.3 \ + acl_set_tag_type.3 \ + acl_to_text.3 \ + acl_valid.3 \ + extattr.3 \ + mac.3 \ + mac.conf.5 \ + mac_free.3 \ + mac_is_present.3 \ + mac_get.3 \ + mac_prepare.3 \ + mac_set.3 \ + mac_text.3 \ + posix1e.3 + +MLINKS+=acl_delete.3 acl_delete_def_file.3 \ + acl_delete.3 acl_delete_file_np.3 \ + acl_delete.3 acl_delete_fd_np.3 \ + acl_get.3 acl_get_file.3 \ + acl_get.3 acl_get_fd.3 \ + acl_get.3 acl_get_fd_np.3 \ + acl_set.3 acl_set_file.3 \ + acl_set.3 acl_set_fd.3 \ + acl_set.3 acl_set_fd_np.3 \ + acl_valid.3 acl_valid_file_np.3 \ + acl_valid.3 acl_valid_fd_np.3 \ + extattr.3 extattr_namespace_to_string.3 \ + extattr.3 extattr_string_to_namespace.3 \ + mac_get.3 mac_get_fd.3 \ + mac_get.3 mac_get_file.3 \ + mac_get.3 mac_get_link.3 \ + mac_get.3 mac_get_pid.3 \ + mac_get.3 mac_get_proc.3 \ + mac_prepare.3 mac_prepare_file_label.3 \ + mac_prepare.3 mac_prepare_ifnet_label.3 \ + mac_prepare.3 mac_prepare_process_label.3 \ + mac_set.3 mac_set_link.3 \ + mac_set.3 mac_set_fd.3 \ + mac_set.3 mac_set_file.3 \ + mac_set.3 mac_set_proc.3 \ + mac_text.3 mac_from_text.3 \ + mac_text.3 mac_to_text.3 diff --git a/lib/libc/posix1e/Symbol.map b/lib/libc/posix1e/Symbol.map new file mode 100644 index 0000000..dd3c08f --- /dev/null +++ b/lib/libc/posix1e/Symbol.map @@ -0,0 +1,69 @@ +/* + * $FreeBSD$ + */ + +FBSD_1.0 { + acl_calc_mask; + acl_copy_entry; + acl_copy_ext; + acl_copy_int; + acl_delete_def_file; + acl_delete_def_link_np; + acl_delete_file_np; + acl_delete_link_np; + acl_delete_fd_np; + acl_delete_entry; + acl_create_entry; + acl_get_entry; + acl_free; + acl_from_text; + acl_get_file; + acl_get_link_np; + acl_get_fd; + acl_get_fd_np; + acl_get_perm_np; + acl_get_permset; + acl_get_qualifier; + acl_get_tag_type; + acl_init; + acl_dup; + acl_add_perm; + acl_clear_perms; + acl_delete_perm; + acl_set_file; + acl_set_link_np; + acl_set_fd; + acl_set_fd_np; + acl_set_permset; + acl_set_qualifier; + acl_set_tag_type; + acl_to_text; + acl_valid; + acl_valid_file_np; + acl_valid_link_np; + acl_valid_fd_np; + extattr_namespace_to_string; + extattr_string_to_namespace; + mac_reload; + mac_free; + mac_from_text; + mac_to_text; + mac_prepare; + mac_prepare_type; + mac_prepare_ifnet_label; + mac_prepare_file_label; + mac_prepare_packet_label; + mac_prepare_process_label; + mac_is_present; + mac_execve; + mac_get_fd; + mac_get_file; + mac_get_link; + mac_get_peer; + mac_get_pid; + mac_get_proc; + mac_set_fd; + mac_set_file; + mac_set_link; + mac_set_proc; +}; diff --git a/lib/libc/posix1e/acl.3 b/lib/libc/posix1e/acl.3 new file mode 100644 index 0000000..1c824d0 --- /dev/null +++ b/lib/libc/posix1e/acl.3 @@ -0,0 +1,244 @@ +.\"- +.\" Copyright (c) 2000, 2001, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 18, 2002 +.Dt ACL 3 +.Os +.Sh NAME +.Nm acl +.Nd introduction to the POSIX.1e ACL security API +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Sh DESCRIPTION +.Fx +permits file systems to export Access Control Lists via the VFS, and +provides a library for userland access to and manipulation of these ACLs. +Not all file systems provide support for ACLs, and some may require that +ACL support be explicitly enabled by the administrator. +The library calls include routines to allocate, duplicate, retrieve, set, +and validate ACLs associated with file objects. +As well as the POSIX.1e routines, there are a number of non-portable +extensions defined that allow for alternative ACL semantics than the +POSIX.1e semantics, such as AFS, NTFS, Coda, and NWFS semantics. +Where routines are non-standard, they are suffixed with _np to indicate that +they are not portable. +.Pp +POSIX.1e describes a set of ACL manipulation routines to manage the +contents of ACLs, as well as their relationships with files; almost +all of these support routines are implemented in +.Fx . +.Pp +Available functions, sorted by behavior, include: +.Bl -tag -width indent +.It Fn acl_add_perm +This function is described in +.Xr acl_add_perm 3 , +and may be used to add permissions to a permission set. +.It Fn acl_calc_mask +This function is described in +.Xr acl_calc_mask 3 , +and may be used to calculate and set the permissions associated with +the +.Dv ACL_MASK +entry. +.It Fn acl_clear_perms +This function is described in +.Xr acl_clear_perms 3 , +and may be used to clear all permissions from a permission set. +.It Fn acl_copy_entry +This function is described in +.Xr acl_copy_entry 3 , +and may be used to copy the contents of an ACL entry. +.It Fn acl_create_entry +This function is described in +.Xr acl_create_entry 3 , +and may be used to create an empty entry in an ACL. +.It Xo +.Fn acl_delete_def_file , +.Fn acl_delete_def_link_np , +.Fn acl_delete_fd_np , +.Fn acl_delete_file_np , +.Fn acl_delete_link_np +.Xc +These functions are described in +.Xr acl_delete 3 , +and may be used to delete ACLs from file system objects. +.It Fn acl_delete_entry +This function is described in +.Xr acl_delete_entry 3 , +and may be used to delete an entry from an ACL. +.It Fn acl_delete_perm +This function is described in +.Xr acl_delete_perm 3 , +and may be used to delete permissions from a permset. +.It Fn acl_dup +This function is described in +.Xr acl_dup 3 , +and may be used to duplicate an ACL structure. +.It Fn acl_free +This function is described in +.Xr acl_free 3 , +and may be used to free userland working ACL storage. +.It Fn acl_from_text +This function is described in +.Xr acl_from_text 3 , +and may be used to convert a text-form ACL into working ACL state, if +the ACL has POSIX.1e semantics. +.It Fn acl_get_entry +This function is described in +.Xr acl_get_entry 3 , +and may be used to retrieve a designated ACL entry from an ACL. +.It Xo +.Fn acl_get_fd , +.Fn acl_get_fd_np , +.Fn acl_get_file , +.Fn acl_get_link_np +.Xc +These functions are described in +.Xr acl_get 3 , +and may be used to retrieve ACLs from file system objects. +.It Fn acl_get_permset +This function is described in +.Xr acl_get_permset 3 , +and may be used to retrieve a permset from an ACL entry. +.It Fn acl_get_qualifier +This function is described in +.Xr acl_get_qualifier 3 , +and may be used to retrieve the qualifier from an ACL entry. +.It Fn acl_get_tag_type +This function is described in +.Xr acl_get_tag_type 3 , +and may be used to retrieve the tag type from an ACL entry. +.It Fn acl_init +This function is described in +.Xr acl_init 3 , +and may be used to allocate a fresh (empty) ACL structure. +.It Xo +.Fn acl_set_fd , +.Fn acl_set_fd_np , +.Fn acl_set_file , +.Fn acl_set_link_np +.Xc +These functions are described in +.Xr acl_set 3 , +and may be used to assign an ACL to a file system object. +.It Fn acl_set_permset +This function is described in +.Xr acl_set_permset 3 , +and may be used to set the permissions of an ACL entry from a permset. +.It Fn acl_set_qualifier +This function is described in +.Xr acl_set_qualifier 3 , +and may be used to set the qualifier of an ACL. +.It Fn acl_set_tag_type +This function is described in +.Xr acl_set_tag_type 3 , +and may be used to set the tag type of an ACL. +.It Fn acl_to_text +This function is described in +.Xr acl_to_text 3 , +and may be used to generate a text-form of a POSIX.1e semantics ACL. +.It Xo +.Fn acl_valid , +.Fn acl_valid_fd_np , +.Fn acl_valid_file_np , +.Fn acl_valid_link_np +.Xc +These functions are described in +.Xr acl_valid 3 , +and may be used to validate an ACL as correct POSIX.1e-semantics, or +as appropriate for a particular file system object regardless of semantics. +.El +.Pp +Documentation of the internal kernel interfaces backing these calls may +be found in +.Xr acl 9 . +The syscalls between the internal interfaces and the public library +routines may change over time, and as such are not documented. +They are not intended to be called directly without going through the +library. +.Sh SEE ALSO +.Xr getfacl 1 , +.Xr setfacl 1 , +.Xr acl_add_perm 3 , +.Xr acl_calc_mask 3 , +.Xr acl_clear_perms 3 , +.Xr acl_copy_entry 3 , +.Xr acl_create_entry 3 , +.Xr acl_delete_entry 3 , +.Xr acl_delete_perm 3 , +.Xr acl_dup 3 , +.Xr acl_free 3 , +.Xr acl_from_text 3 , +.Xr acl_get 3 , +.Xr acl_get_permset 3 , +.Xr acl_get_qualifier 3 , +.Xr acl_get_tag_type 3 , +.Xr acl_init 3 , +.Xr acl_set 3 , +.Xr acl_set_permset 3 , +.Xr acl_set_qualifier 3 , +.Xr acl_set_tag_type 3 , +.Xr acl_to_text 3 , +.Xr acl_valid 3 , +.Xr posix1e 3 , +.Xr acl 9 +.Sh STANDARDS +POSIX.1e assigns security labels to all objects, extending the security +functionality described in POSIX.1. +These additional labels provide fine-grained discretionary access control, +fine-grained capabilities, and labels necessary for mandatory access +control. +POSIX.2c describes a set of userland utilities for manipulating these +labels. +.Pp +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft continues on the cross-platform POSIX.1e +implementation mailing list. +To join this list, see the +.Fx +POSIX.1e implementation page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 ; +.Fx 5.0 +was the first version to include a complete ACL implementation based +on extended attributes for the UFS and UFS2 file systems. +.Pp +The +.Xr getfacl 1 +and +.Xr setfacl 1 +utilities describe the user tools that permit direct manipulation of complete +file ACLs. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_add_perm.3 b/lib/libc/posix1e/acl_add_perm.3 new file mode 100644 index 0000000..43d04f1 --- /dev/null +++ b/lib/libc/posix1e/acl_add_perm.3 @@ -0,0 +1,89 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_ADD_PERM 3 +.Os +.Sh NAME +.Nm acl_add_perm +.Nd add permissions to a permission set +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_add_perm "acl_permset_t permset_d" "acl_perm_t perm" +.Sh DESCRIPTION +The +.Fn acl_add_perm +function +is a POSIX.1e call that adds the permission contained in +.Fa perm +to the permission set +.Fa permset_d . +.Pp +Note: it is not considered an error to attempt to add permissions +that already exist in the permission set. +.Sh RETURN VALUES +.Rv -std acl_add_perm +.Sh ERRORS +The +.Fn acl_add_perm +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa permset_d +is not a valid descriptor for a permission set within an ACL entry. +Argument +.Fa perm +does not contain a valid +.Vt acl_perm_t +value. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_clear_perms 3 , +.Xr acl_delete_perm 3 , +.Xr acl_get_permset 3 , +.Xr acl_set_permset 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_add_perm +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_add_perm +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_calc_mask.3 b/lib/libc/posix1e/acl_calc_mask.3 new file mode 100644 index 0000000..48d2678 --- /dev/null +++ b/lib/libc/posix1e/acl_calc_mask.3 @@ -0,0 +1,98 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_CALC_MASK 3 +.Os +.Sh NAME +.Nm acl_calc_mask +.Nd calculate and set ACL mask permissions +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_calc_mask "acl_t *acl_p" +.Sh DESCRIPTION +The +.Fn acl_calc_mask +function +is a POSIX.1e call that calculates and set the permissions +associated with the +.Dv ACL_MASK +ACL entry of the ACL referred to by +.Fa acl_p . +.Pp +The value of new permissions are the union of the permissions +granted by the +.Dv ACL_GROUP , ACL_GROUP_OBJ , ACL_USER +tag types which +match processes in the file group class contained in the ACL +referred to by +.Fa acl_p . +.Pp +If the ACL referred to by +.Fa acl_p +already contains an +.Dv ACL_MASK +entry, its permissions shall be +overwritten; if it does not contain an +.Dv ACL_MASK +entry, one shall +be added. +.Sh RETURN VALUES +.Rv -std acl_calc_mask +.Sh ERRORS +The +.Fn acl_calc_mask +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa acl_p +does not point to a pointer to a valid ACL. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_get_entry 3 , +.Xr acl_valid 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_calc_mask +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_calc_mask +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_calc_mask.c b/lib/libc/posix1e/acl_calc_mask.c new file mode 100644 index 0000000..7e2f955 --- /dev/null +++ b/lib/libc/posix1e/acl_calc_mask.c @@ -0,0 +1,119 @@ +/* + * Copyright (c) 2001-2002 Chris D. Faulhaber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> +#include <stdio.h> + +/* + * acl_calc_mask() (23.4.2): calculate and set the permissions + * associated with the ACL_MASK ACL entry. If the ACL already + * contains an ACL_MASK entry, its permissions shall be + * overwritten; if not, one shall be added. + */ +int +acl_calc_mask(acl_t *acl_p) +{ + struct acl *acl_int, *acl_int_new; + acl_t acl_new; + int i, mask_mode, mask_num; + + /* + * (23.4.2.4) requires acl_p to point to a pointer to a valid ACL. + * Since one of the primary reasons to use this function would be + * to calculate the appropriate mask to obtain a valid ACL, we only + * perform sanity checks here and validate the ACL prior to + * returning. + */ + if (acl_p == NULL || *acl_p == NULL) { + errno = EINVAL; + return (-1); + } + acl_int = &(*acl_p)->ats_acl; + if ((acl_int->acl_cnt < 3) || (acl_int->acl_cnt > ACL_MAX_ENTRIES)) { + errno = EINVAL; + return (-1); + } + + acl_new = acl_dup(*acl_p); + if (acl_new == NULL) + return (-1); + acl_int_new = &acl_new->ats_acl; + + mask_mode = 0; + mask_num = -1; + + /* gather permissions and find a mask entry */ + for (i = 0; i < acl_int_new->acl_cnt; i++) { + switch(acl_int_new->acl_entry[i].ae_tag) { + case ACL_USER: + case ACL_GROUP: + case ACL_GROUP_OBJ: + mask_mode |= + acl_int_new->acl_entry[i].ae_perm & ACL_PERM_BITS; + break; + case ACL_MASK: + mask_num = i; + break; + } + } + + /* if a mask entry already exists, overwrite the perms */ + if (mask_num != -1) + acl_int_new->acl_entry[mask_num].ae_perm = mask_mode; + else { + /* if no mask exists, check acl_cnt... */ + if (acl_int_new->acl_cnt == ACL_MAX_ENTRIES) { + errno = ENOMEM; + return (-1); + } + /* ...and add the mask entry */ + acl_int_new->acl_entry[acl_int_new->acl_cnt].ae_tag = ACL_MASK; + acl_int_new->acl_entry[acl_int_new->acl_cnt].ae_id = + ACL_UNDEFINED_ID; + acl_int_new->acl_entry[acl_int_new->acl_cnt].ae_perm = + mask_mode; + acl_int_new->acl_cnt++; + } + + if (acl_valid(acl_new) == -1) { + errno = EINVAL; + acl_free(acl_new); + return (-1); + } + + **acl_p = *acl_new; + acl_free(acl_new); + + return (0); +} diff --git a/lib/libc/posix1e/acl_clear_perms.3 b/lib/libc/posix1e/acl_clear_perms.3 new file mode 100644 index 0000000..db026a3 --- /dev/null +++ b/lib/libc/posix1e/acl_clear_perms.3 @@ -0,0 +1,79 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_CLEAR_PERMS 3 +.Os +.Sh NAME +.Nm acl_clear_perms +.Nd clear permissions from a permission set +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_clear_perms "acl_permset_t permset_d" +.Sh DESCRIPTION +The +.Fn acl_clear_perms +function +is a POSIX.1e call that clears all permissions from permissions set +.Fa permset_d . +.Sh RETURN VALUES +.Rv -std acl_clear_perms +.Sh ERRORS +The +.Fn acl_clear_perms +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa permset_d +is not a valid descriptor for a permission set. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_add_perm 3 , +.Xr acl_delete_perm 3 , +.Xr acl_get_permset 3 , +.Xr acl_set_permset 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_clear_perms +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_clear_perms +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_copy.c b/lib/libc/posix1e/acl_copy.c new file mode 100644 index 0000000..6d1e0a8 --- /dev/null +++ b/lib/libc/posix1e/acl_copy.c @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2001-2002 Chris D. Faulhaber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> +#include <string.h> + +/* + * acl_copy_entry() (23.4.4): copy the contents of ACL entry src_d to + * ACL entry dest_d + */ +int +acl_copy_entry(acl_entry_t dest_d, acl_entry_t src_d) +{ + + if (src_d == NULL || dest_d == NULL || src_d == dest_d) { + errno = EINVAL; + return (-1); + } + + dest_d->ae_tag = src_d->ae_tag; + dest_d->ae_id = src_d->ae_id; + dest_d->ae_perm = src_d->ae_perm; + + return (0); +} + +ssize_t +acl_copy_ext(void *buf_p, acl_t acl, ssize_t size) +{ + + errno = ENOSYS; + return (-1); +} + +acl_t +acl_copy_int(const void *buf_p) +{ + + errno = ENOSYS; + return (NULL); +} diff --git a/lib/libc/posix1e/acl_copy_entry.3 b/lib/libc/posix1e/acl_copy_entry.3 new file mode 100644 index 0000000..fead89f --- /dev/null +++ b/lib/libc/posix1e/acl_copy_entry.3 @@ -0,0 +1,85 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_COPY_ENTRY 3 +.Os +.Sh NAME +.Nm acl_copy_entry +.Nd copy an ACL entry to another ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_copy_entry "acl_entry_t dest_d" "acl_entry_t src_d" +.Sh DESCRIPTION +The +.Fn acl_copy_entry +function +is a POSIX.1e call that copies the contents of ACL entry +.Fa src_d +to ACL entry +.Fa dest_d . +.Sh RETURN VALUES +.Rv -std acl_copy_entry +.Sh ERRORS +The +.Fn acl_copy_entry +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa src_d +or +.Fa dest_d +is not a valid descriptor for an ACL entry, or +arguments +.Fa src_d +and +.Fa dest_d +reference the same ACL entry. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_get_entry 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_copy_entry +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_copy_entry +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_create_entry.3 b/lib/libc/posix1e/acl_create_entry.3 new file mode 100644 index 0000000..fb856ad --- /dev/null +++ b/lib/libc/posix1e/acl_create_entry.3 @@ -0,0 +1,82 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 16, 2001 +.Dt ACL_CREATE_ENTRY 3 +.Os +.Sh NAME +.Nm acl_create_entry +.Nd create a new ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_create_entry "acl_t *acl_p" "acl_entry_t *entry_p" +.Sh DESCRIPTION +The +.Fn acl_create_entry +function +is a POSIX.1e call that creates a new ACL entry in the ACL +pointed to by +.Fa acl_p . +.Sh RETURN VALUES +.Rv -std acl_create_entry +.Sh ERRORS +The +.Fn acl_create_entry +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa acl_p +does not point to a pointer to a valid ACL. +.It Bq Er ENOMEM +The ACL working storage requires more memory than is +allowed by the hardware or system-imposed memory +management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_delete_entry 3 , +.Xr acl_get_entry 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_create_entry +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_create_entry +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_delete.3 b/lib/libc/posix1e/acl_delete.3 new file mode 100644 index 0000000..fb2958b --- /dev/null +++ b/lib/libc/posix1e/acl_delete.3 @@ -0,0 +1,140 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 29, 2002 +.Dt ACL_DELETE 3 +.Os +.Sh NAME +.Nm acl_delete_def_file , +.Nm acl_delete_def_link_np , +.Nm acl_delete_fd_np , +.Nm acl_delete_file_np , +.Nm acl_delete_link_np +.Nd delete an ACL from a file +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_delete_def_file "const char *path_p" +.Ft int +.Fn acl_delete_def_link_np "const char *path_p" +.Ft int +.Fn acl_delete_fd_np "int filedes" "acl_type_t type" +.Ft int +.Fn acl_delete_file_np "const char *path_p" "acl_type_t type" +.Ft int +.Fn acl_delete_link_np "const char *path_p" "acl_type_t type" +.Sh DESCRIPTION +The +.Fn acl_delete_def_file , +.Fn acl_delete_def_link_np , +.Fn acl_delete_fd_np , +.Fn acl_delete_file_np , +and +.Fn acl_delete_link_np +each allow the deletion of an ACL from a file. +The +.Fn acl_delete_def_file +function +is a POSIX.1e call that deletes the default ACL from a file (normally a +directory) by name; the remainder of the calls are non-portable extensions +that permit the deletion of arbitrary ACL types from a file/directory +either by path name or file descriptor. +The +.Fn _file +variations follow a symlink if it occurs in the last segment of the +path name; the +.Fn _link +variations operate on the symlink itself. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +.Rv -std +.Sh ERRORS +If any of the following conditions occur, these functions shall return -1 +and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EACCES +Search permission is denied for a component of the path prefix, or the +object exists and the process does not have appropriate access rights. +.It Bq Er EBADF +The +.Va fd +argument is not a valid file descriptor. +.It Bq Er EINVAL +The ACL type passed is invalid for this file object. +.It Bq Er ENAMETOOLONG +A component of a pathname exceeded 255 characters, or an +entire path name exceeded 1023 characters. +.It Bq Er ENOENT +The named object does not exist, or the +.Va path_p +argument points to an empty string. +.It Bq Er ENOMEM +Insufficient memory available to fulfill request. +.It Bq Er ENOTDIR +A component of the path prefix is not a directory. +.Pp +Argument +.Va path_p +must be a directory, and is not. +.It Bq Er EOPNOTSUPP +The file system does not support ACL deletion. +.It Bq Er EPERM +The process does not have appropriate privilege to perform the operation +to delete an ACL. +.It Bq Er EROFS +The file system is read-only. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_get 3 , +.Xr acl_set 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_delete.c b/lib/libc/posix1e/acl_delete.c new file mode 100644 index 0000000..a93cd7b --- /dev/null +++ b/lib/libc/posix1e/acl_delete.c @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_delete_def_file -- remove a default acl from a file + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <sys/errno.h> + +int +acl_delete_def_file(const char *path_p) +{ + + return (__acl_delete_file(path_p, ACL_TYPE_DEFAULT)); +} + +int +acl_delete_def_link_np(const char *path_p) +{ + + return (__acl_delete_link(path_p, ACL_TYPE_DEFAULT)); +} + +int +acl_delete_file_np(const char *path_p, acl_type_t type) +{ + + return (__acl_delete_file(path_p, type)); +} + +int +acl_delete_link_np(const char *path_p, acl_type_t type) +{ + + return (__acl_delete_link(path_p, type)); +} + + +int +acl_delete_fd_np(int filedes, acl_type_t type) +{ + + return (___acl_delete_fd(filedes, type)); +} diff --git a/lib/libc/posix1e/acl_delete_entry.3 b/lib/libc/posix1e/acl_delete_entry.3 new file mode 100644 index 0000000..a931db0 --- /dev/null +++ b/lib/libc/posix1e/acl_delete_entry.3 @@ -0,0 +1,83 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_DELETE_ENTRY 3 +.Os +.Sh NAME +.Nm acl_delete_entry +.Nd delete an ACL entry from an ACL +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_delete_entry "acl_t acl" "acl_entry_t entry_d" +.Sh DESCRIPTION +The +.Fn acl_delete_entry +function +is a POSIX.1e call that removes the ACL entry +.Fa entry_d +from ACL +.Fa acl . +.Sh RETURN VALUES +.Rv -std acl_delete_entry +.Sh ERRORS +The +.Fn acl_delete_entry +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa acl +does not point to a valid ACL. +Argument +.Fa entry_d +is not a valid descriptor for an ACL entry in +.Fa acl . +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_copy_entry 3 , +.Xr acl_get_entry 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_delete_entry +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_delete_entry +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_delete_entry.c b/lib/libc/posix1e/acl_delete_entry.c new file mode 100644 index 0000000..3195fac --- /dev/null +++ b/lib/libc/posix1e/acl_delete_entry.c @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2001-2002 Chris D. Faulhaber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <errno.h> +#include <string.h> + +/* + * acl_delete_entry() (23.4.9): remove the ACL entry indicated by entry_d + * from acl. + */ +int +acl_delete_entry(acl_t acl, acl_entry_t entry_d) +{ + struct acl *acl_int; + int i; + + if (acl == NULL || entry_d == NULL) { + errno = EINVAL; + return (-1); + } + + acl_int = &acl->ats_acl; + + if ((acl->ats_acl.acl_cnt < 1) || + (acl->ats_acl.acl_cnt > ACL_MAX_ENTRIES)) { + errno = EINVAL; + return (-1); + } + for (i = 0; i < acl->ats_acl.acl_cnt; i++) { + /* if this is our entry... */ + if ((acl->ats_acl.acl_entry[i].ae_tag == entry_d->ae_tag) && + (acl->ats_acl.acl_entry[i].ae_id == entry_d->ae_id)) { + /* ...shift the remaining entries... */ + for (; i < acl->ats_acl.acl_cnt - 1; ++i) + acl->ats_acl.acl_entry[i] = + acl->ats_acl.acl_entry[i+1]; + /* ...drop the count and zero the unused entry... */ + acl->ats_acl.acl_cnt--; + bzero(&acl->ats_acl.acl_entry[i], + sizeof(struct acl_entry)); + acl->ats_cur_entry = 0; + return (0); + } + } + + + errno = EINVAL; + return (-1); +} diff --git a/lib/libc/posix1e/acl_delete_perm.3 b/lib/libc/posix1e/acl_delete_perm.3 new file mode 100644 index 0000000..0740d61 --- /dev/null +++ b/lib/libc/posix1e/acl_delete_perm.3 @@ -0,0 +1,84 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_DELETE_PERM 3 +.Os +.Sh NAME +.Nm acl_delete_perm +.Nd delete permissions from a permission set +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_delete_perm "acl_permset_t permset_d" "acl_perm_t perm" +.Sh DESCRIPTION +The +.Fn acl_delete_perm +function +is a POSIX.1e call that removes specific permissions from permissions set +.Fa perm . +.Sh RETURN VALUES +.Rv -std acl_delete_perm +.Sh ERRORS +The +.Fn acl_delete_perm +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa permset_d +is not a valid descriptor for a permission set. +Argument +.Fa perm +does not contain a valid +.Vt acl_perm_t +value. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_add_perm 3 , +.Xr acl_clear_perms 3 , +.Xr acl_get_permset 3 , +.Xr acl_set_permset 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_delete_perm +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_delete_perm +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_dup.3 b/lib/libc/posix1e/acl_dup.3 new file mode 100644 index 0000000..ae4ff4f --- /dev/null +++ b/lib/libc/posix1e/acl_dup.3 @@ -0,0 +1,110 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 28, 2000 +.Dt ACL_DUP 3 +.Os +.Sh NAME +.Nm acl_dup +.Nd duplicate an ACL +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft acl_t +.Fn acl_dup "acl_t acl" +.Sh DESCRIPTION +The +.Fn acl_dup +function returns a pointer to a copy of the ACL pointed to by the argument +.Va acl . +.Pp +This function may cause memory to be allocated. +The caller should free any +releasable memory, when the new ACL is no longer required, by calling +.Xr acl_free 3 +with the +.Va (void*)acl_t +as an argument. +.Pp +Any existing ACL pointers that refer to the ACL referred to by +.Va acl +shall continue to refer to the ACL. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +Upon successful completion, this function shall return a pointer to the +duplicate ACL. +Otherwise, a value of +.Va (acl_t)NULL +shall be returned, and +.Va errno +shall be set to indicate the error. +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_init +function shall return a value of +.Va (acl_t)NULL +and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Va acl +does not point to a valid ACL. +.It Bq Er ENOMEM +The +.Va acl_t +to be returned requires more memory than is allowed by the hardware or +system-imposed memory management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_free 3 , +.Xr acl_get 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_entry.c b/lib/libc/posix1e/acl_entry.c new file mode 100644 index 0000000..f5bdbed --- /dev/null +++ b/lib/libc/posix1e/acl_entry.c @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2001-2002 Chris D. Faulhaber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> +#include <stdlib.h> + +/* + * acl_create_entry() (23.4.7): create a new ACL entry in the ACL pointed + * to by acl_p. + */ +int +acl_create_entry(acl_t *acl_p, acl_entry_t *entry_p) +{ + struct acl *acl_int; + + if (acl_p == NULL) { + errno = EINVAL; + return (-1); + } + + acl_int = &(*acl_p)->ats_acl; + + if ((acl_int->acl_cnt >= ACL_MAX_ENTRIES) || (acl_int->acl_cnt < 0)) { + errno = EINVAL; + return (-1); + } + + *entry_p = &acl_int->acl_entry[acl_int->acl_cnt++]; + + (**entry_p).ae_tag = ACL_UNDEFINED_TAG; + (**entry_p).ae_id = ACL_UNDEFINED_ID; + (**entry_p).ae_perm = ACL_PERM_NONE; + + (*acl_p)->ats_cur_entry = 0; + + return (0); +} + +/* + * acl_get_entry() (23.4.14): returns an ACL entry from an ACL + * indicated by entry_id. + */ +int +acl_get_entry(acl_t acl, int entry_id, acl_entry_t *entry_p) +{ + struct acl *acl_int; + + if (acl == NULL) { + errno = EINVAL; + return (-1); + } + acl_int = &acl->ats_acl; + + switch(entry_id) { + case ACL_FIRST_ENTRY: + acl->ats_cur_entry = 0; + /* PASSTHROUGH */ + case ACL_NEXT_ENTRY: + if (acl->ats_cur_entry >= acl->ats_acl.acl_cnt) + return 0; + *entry_p = &acl_int->acl_entry[acl->ats_cur_entry++]; + return (1); + } + + errno = EINVAL; + return (-1); +} diff --git a/lib/libc/posix1e/acl_free.3 b/lib/libc/posix1e/acl_free.3 new file mode 100644 index 0000000..d64c72a --- /dev/null +++ b/lib/libc/posix1e/acl_free.3 @@ -0,0 +1,89 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 28, 2000 +.Dt ACL_FREE 3 +.Os +.Sh NAME +.Nm acl_free +.Nd free ACL working state +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_free "void *obj_p" +.Sh DESCRIPTION +The +.Fn acl_free +call allows the freeing of ACL working space, such as is allocated by +.Xr acl_dup 3 , +or +.Xr acl_from_text 3 . +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +.Rv -std acl_free +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_free +function shall return -1 and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EINVAL +The value of the +.Va obj_p +argument is invalid. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_dup 3 , +.Xr acl_from_text 3 , +.Xr acl_get 3 , +.Xr acl_init 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_free.c b/lib/libc/posix1e/acl_free.c new file mode 100644 index 0000000..6de41da --- /dev/null +++ b/lib/libc/posix1e/acl_free.c @@ -0,0 +1,54 @@ +/*- + * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_free -- free ACL objects from user memory + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <sys/errno.h> +#include <stdlib.h> + +/* + * acl_free() (23.4.12): free any releasable memory allocated to the + * ACL data object identified by obj_p. + */ +int +acl_free(void *obj_p) +{ + + if (obj_p) { + free(obj_p); + obj_p = NULL; + } + + return (0); +} diff --git a/lib/libc/posix1e/acl_from_text.3 b/lib/libc/posix1e/acl_from_text.3 new file mode 100644 index 0000000..8b10784 --- /dev/null +++ b/lib/libc/posix1e/acl_from_text.3 @@ -0,0 +1,130 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 28, 2000 +.Dt ACL_FROM_TEXT 3 +.Os +.Sh NAME +.Nm acl_from_text +.Nd create an ACL from text +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft acl_t +.Fn acl_from_text "const char *buf_p" +.Sh DESCRIPTION +The +.Fn acl_from_text +function converts the text form of an ACL referred to by +.Va buf_p +into the internal working structure for ACLs, appropriate for applying to +files or manipulating. +.Pp +This function may cause memory to be allocated. +The caller should free any +releasable memory, when the new ACL is no longer required, by calling +.Xr acl_free 3 +with the +.Va (void *)acl_t +as an argument. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +Upon successful completion, the function shall return a pointer to the +internal representation of the ACL in working storage. +Otherwise, a value +of +.Va (acl_t)NULL +shall be returned, and +.Va errno +shall be set to indicate the error. +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_from_text +function shall return a value of +.Va (acl_t)NULL +and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Va buf_p +cannot be translated into an ACL. +.It Bq Er ENOMEM +The ACL working storage requires more memory than is allowed by the +hardware or system-imposed memory management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_free 3 , +.Xr acl_get 3 , +.Xr acl_to_text 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson +.Sh BUGS +The +.Fn acl_from_text +and +.Fn acl_to_text +functions +rely on the +.Xr getpwent 3 +library calls to manage username and uid mapping, as well as the +.Xr getgrent 3 +library calls to manage groupname and gid mapping. +These calls are not +thread safe, and so transitively, neither are +.Fn acl_from_text +and +.Fn acl_to_text . +These functions may also interfere with stateful +calls associated with the +.Fn getpwent +and +.Fn getgrent +calls. diff --git a/lib/libc/posix1e/acl_from_text.c b/lib/libc/posix1e/acl_from_text.c new file mode 100644 index 0000000..c679b17 --- /dev/null +++ b/lib/libc/posix1e/acl_from_text.c @@ -0,0 +1,289 @@ +/*- + * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_from_text: Convert a text-form ACL from a string to an acl_t. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <sys/errno.h> +#include <grp.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "acl_support.h" + +static int _posix1e_acl_name_to_id(acl_tag_t tag, char *name, uid_t *id); +static acl_tag_t acl_string_to_tag(char *tag, char *qualifier); +static char *string_skip_whitespace(char *string); +static void string_trim_trailing_whitespace(char *string); + +static char * +string_skip_whitespace(char *string) +{ + + while (*string && ((*string == ' ') || (*string == '\t'))) { + string++; + } + return (string); +} + +static void +string_trim_trailing_whitespace(char *string) +{ + char *end; + + if (*string == '\0') + return; + + end = string + strlen(string) - 1; + + while (end != string) { + if ((*end == ' ') || (*end == '\t')) { + *end = '\0'; + end--; + } else { + return; + } + } + + return; +} + +static acl_tag_t +acl_string_to_tag(char *tag, char *qualifier) +{ + + if (*qualifier == '\0') { + if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) { + return (ACL_USER_OBJ); + } else + if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) { + return (ACL_GROUP_OBJ); + } else + if ((!strcmp(tag, "mask")) || (!strcmp(tag, "m"))) { + return (ACL_MASK); + } else + if ((!strcmp(tag, "other")) || (!strcmp(tag, "o"))) { + return (ACL_OTHER); + } else + return(-1); + } else { + if ((!strcmp(tag, "user")) || (!strcmp(tag, "u"))) { + return(ACL_USER); + } else + if ((!strcmp(tag, "group")) || (!strcmp(tag, "g"))) { + return(ACL_GROUP); + } else + return(-1); + } +} + +/* + * acl_from_text -- Convert a string into an ACL. + * Postpone most validity checking until the end and call acl_valid() to do + * that. + */ +acl_t +acl_from_text(const char *buf_p) +{ + acl_tag_t t; + acl_perm_t p; + acl_t acl; + char *mybuf_p, *line, *cur, *notcomment, *comment, *entry; + char *tag, *qualifier, *permission; + int error; + uid_t id; + + /* Local copy we can mess up. */ + mybuf_p = strdup(buf_p); + if (mybuf_p == NULL) + return(NULL); + + acl = acl_init(3); + if (acl == NULL) { + free(mybuf_p); + return(NULL); + } + + /* Outer loop: delimit at \n boundaries. */ + cur = mybuf_p; + while ((line = strsep(&cur, "\n"))) { + /* Now split the line on the first # to strip out comments. */ + comment = line; + notcomment = strsep(&comment, "#"); + + /* Inner loop: delimit at ',' boundaries. */ + while ((entry = strsep(¬comment, ","))) { + /* Now split into three ':' delimited fields. */ + tag = strsep(&entry, ":"); + if (tag == NULL) { + errno = EINVAL; + goto error_label; + } + tag = string_skip_whitespace(tag); + if ((*tag == '\0') && (!entry)) { + /* + * Is an entirely comment line, skip to next + * comma. + */ + continue; + } + string_trim_trailing_whitespace(tag); + + qualifier = strsep(&entry, ":"); + if (qualifier == NULL) { + errno = EINVAL; + goto error_label; + } + qualifier = string_skip_whitespace(qualifier); + string_trim_trailing_whitespace(qualifier); + + permission = strsep(&entry, ":"); + if (permission == NULL || entry) { + errno = EINVAL; + goto error_label; + } + permission = string_skip_whitespace(permission); + string_trim_trailing_whitespace(permission); + + t = acl_string_to_tag(tag, qualifier); + if (t == -1) { + errno = EINVAL; + goto error_label; + } + + error = _posix1e_acl_string_to_perm(permission, &p); + if (error == -1) { + errno = EINVAL; + goto error_label; + } + + switch(t) { + case ACL_USER_OBJ: + case ACL_GROUP_OBJ: + case ACL_MASK: + case ACL_OTHER: + if (*qualifier != '\0') { + errno = EINVAL; + goto error_label; + } + id = 0; + break; + + case ACL_USER: + case ACL_GROUP: + error = _posix1e_acl_name_to_id(t, qualifier, + &id); + if (error == -1) + goto error_label; + break; + + default: + errno = EINVAL; + goto error_label; + } + + error = _posix1e_acl_add_entry(acl, t, id, p); + if (error == -1) + goto error_label; + } + } + +#if 0 + /* XXX Should we only return ACLs valid according to acl_valid? */ + /* Verify validity of the ACL we read in. */ + if (acl_valid(acl) == -1) { + errno = EINVAL; + goto error_label; + } +#endif + + return(acl); + +error_label: + acl_free(acl); + free(mybuf_p); + return(NULL); +} + +/* + * Given a username/groupname from a text form of an ACL, return the uid/gid + * XXX NOT THREAD SAFE, RELIES ON GETPWNAM, GETGRNAM + * XXX USES *PW* AND *GR* WHICH ARE STATEFUL AND THEREFORE THIS ROUTINE + * MAY HAVE SIDE-EFFECTS + * + * XXX currently doesn't deal correctly with a numeric uid being passed + * instead of a username. What is correct behavior here? Check chown. + */ +static int +_posix1e_acl_name_to_id(acl_tag_t tag, char *name, uid_t *id) +{ + struct group *g; + struct passwd *p; + unsigned long l; + char *endp; + + switch(tag) { + case ACL_USER: + p = getpwnam(name); + if (p == NULL) { + l = strtoul(name, &endp, 0); + if (*endp != '\0' || l != (unsigned long)(uid_t)l) { + errno = EINVAL; + return (-1); + } + *id = (uid_t)l; + return (0); + } + *id = p->pw_uid; + return (0); + + case ACL_GROUP: + g = getgrnam(name); + if (g == NULL) { + l = strtoul(name, &endp, 0); + if (*endp != '\0' || l != (unsigned long)(gid_t)l) { + errno = EINVAL; + return (-1); + } + *id = (gid_t)l; + return (0); + } + *id = g->gr_gid; + return (0); + + default: + return (EINVAL); + } +} diff --git a/lib/libc/posix1e/acl_get.3 b/lib/libc/posix1e/acl_get.3 new file mode 100644 index 0000000..fa915df --- /dev/null +++ b/lib/libc/posix1e/acl_get.3 @@ -0,0 +1,156 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 29, 2002 +.Dt ACL_GET 3 +.Os +.Sh NAME +.Nm acl_get_fd , +.Nm acl_get_fd_np , +.Nm acl_get_file , +.Nm acl_get_link_np +.Nd get an ACL for a file +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft acl_t +.Fn acl_get_fd "int fd" +.Ft acl_t +.Fn acl_get_fd_np "int fd" "acl_type_t type" +.Ft acl_t +.Fn acl_get_file "const char *path_p" "acl_type_t type" +.Ft acl_t +.Fn acl_get_link_np "const char *path_p" "acl_type_t type" +.Sh DESCRIPTION +The +.Fn acl_get_fd , +.Fn acl_get_file , +.Fn acl_get_link_np , +and +.Fn acl_get_fd_np +each allow the retrieval of an ACL from a file. +The +.Fn acl_get_fd +is a POSIX.1e call that allows the retrieval of an ACL of type +ACL_TYPE_ACCESS +from a file descriptor. +The +.Fn acl_get_fd_np +function +is a non-portable form of +.Fn acl_get_fd +that allows the retrieval of any type of ACL from a file descriptor. +The +.Fn acl_get_file +function is a POSIX.1e call that allows the retrieval of a +specified type of ACL from a file by name; +.Fn acl_get_link_np +is a non-portable variation on +.Fn acl_get_file +which does not follow a symlink if the target of the call is a +symlink. +.Pp +These functions may cause memory to be allocated. +The caller should free +any releasable memory, when the new ACL is no longer required, by calling +.Xr acl_free 3 +with the +.Va (void *)acl_t +as an argument. +.Pp +The ACL in the working storage is an independent copy of the ACL associated +with the object referred to by +.Va fd . +The ACL in the working storage shall not participate in any access control +decisions. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +Upon successful completion, the function shall return a pointer to the ACL +that was retrieved. +Otherwise, a value of +.Va (acl_t)NULL +shall be returned, and +.Va errno +shall be set to indicate the error. +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_get_fd +function shall return a value of +.Va (acl_t)NULL +and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EACCES +Search permission is denied for a component of the path prefix, or the +object exists and the process does not have appropriate access rights. +.It Bq Er EBADF +The +.Va fd +argument is not a valid file descriptor. +.It Bq Er EINVAL +The ACL type passed is invalid for this file object. +.It Bq Er ENAMETOOLONG +A component of a pathname exceeded 255 characters, or an +entire path name exceeded 1023 characters. +.It Bq Er ENOENT +The named object does not exist, or the +.Va path_p +argument points to an empty string. +.It Bq Er ENOMEM +Insufficient memory available to fulfill request. +.It Bq Er EOPNOTSUPP +The file system does not support ACL retrieval. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_free 3 , +.Xr acl_get 3 , +.Xr acl_set 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_get.c b/lib/libc/posix1e/acl_get.c new file mode 100644 index 0000000..1f97baa --- /dev/null +++ b/lib/libc/posix1e/acl_get.c @@ -0,0 +1,215 @@ +/*- + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_get_fd - syscall wrapper for retrieving access ACL by fd + * acl_get_fd_np - syscall wrapper for retrieving ACL by fd (non-POSIX) + * acl_get_file - syscall wrapper for retrieving ACL by filename + * acl_get_link_np - syscall wrapper for retrieving ACL by filename (NOFOLLOW) + * (non-POSIX) + * acl_get_perm_np() checks if a permission is in the specified + * permset (non-POSIX) + * acl_get_permset() returns the permission set in the ACL entry + * acl_get_qualifier() retrieves the qualifier of the tag from the ACL entry + * acl_get_tag_type() returns the tag type for the ACL entry entry_d + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +acl_t +acl_get_file(const char *path_p, acl_type_t type) +{ + acl_t aclp; + int error; + + aclp = acl_init(ACL_MAX_ENTRIES); + if (aclp == NULL) + return (NULL); + + error = __acl_get_file(path_p, type, &aclp->ats_acl); + if (error) { + acl_free(aclp); + return (NULL); + } + + return (aclp); +} + +acl_t +acl_get_link_np(const char *path_p, acl_type_t type) +{ + acl_t aclp; + int error; + + aclp = acl_init(ACL_MAX_ENTRIES); + if (aclp == NULL) + return (NULL); + + error = __acl_get_link(path_p, type, &aclp->ats_acl); + if (error) { + acl_free(aclp); + return (NULL); + } + + return (aclp); +} + +acl_t +acl_get_fd(int fd) +{ + acl_t aclp; + int error; + + aclp = acl_init(ACL_MAX_ENTRIES); + if (aclp == NULL) + return (NULL); + + error = ___acl_get_fd(fd, ACL_TYPE_ACCESS, &aclp->ats_acl); + if (error) { + acl_free(aclp); + return (NULL); + } + + return (aclp); +} + +acl_t +acl_get_fd_np(int fd, acl_type_t type) +{ + acl_t aclp; + int error; + + aclp = acl_init(ACL_MAX_ENTRIES); + if (aclp == NULL) + return (NULL); + + error = ___acl_get_fd(fd, type, &aclp->ats_acl); + if (error) { + acl_free(aclp); + return (NULL); + } + + return (aclp); +} + +int +acl_get_perm_np(acl_permset_t permset_d, acl_perm_t perm) +{ + + if (permset_d == NULL) { + errno = EINVAL; + return (-1); + } + + switch(perm) { + case ACL_READ: + case ACL_WRITE: + case ACL_EXECUTE: + if (*permset_d & perm) + return (1); + break; + default: + errno = EINVAL; + return (-1); + } + + return (0); +} + +/* + * acl_get_permset() (23.4.17): return via permset_p a descriptor to + * the permission set in the ACL entry entry_d. + */ +int +acl_get_permset(acl_entry_t entry_d, acl_permset_t *permset_p) +{ + + if (entry_d == NULL || permset_p == NULL) { + errno = EINVAL; + return (-1); + } + + *permset_p = &entry_d->ae_perm; + + return (0); +} + +/* + * acl_get_qualifier() (23.4.18): retrieve the qualifier of the tag + * for the ACL entry entry_d. + */ +void * +acl_get_qualifier(acl_entry_t entry_d) +{ + uid_t *retval; + + if (entry_d == NULL) { + errno = EINVAL; + return (NULL); + } + + switch(entry_d->ae_tag) { + case ACL_USER: + case ACL_GROUP: + retval = malloc(sizeof(uid_t)); + if (retval == NULL) + return (NULL); + *retval = entry_d->ae_id; + return (retval); + } + + errno = EINVAL; + return (NULL); +} + +/* + * acl_get_tag_type() (23.4.19): return the tag type for the ACL + * entry entry_p. + */ +int +acl_get_tag_type(acl_entry_t entry_d, acl_tag_t *tag_type_p) +{ + + if (entry_d == NULL || tag_type_p == NULL) { + errno = EINVAL; + return (-1); + } + + *tag_type_p = entry_d->ae_tag; + + return (0); +} diff --git a/lib/libc/posix1e/acl_get_entry.3 b/lib/libc/posix1e/acl_get_entry.3 new file mode 100644 index 0000000..42e03c1 --- /dev/null +++ b/lib/libc/posix1e/acl_get_entry.3 @@ -0,0 +1,145 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd April 13, 2001 +.Dt ACL_GET_ENTRY 3 +.Os +.Sh NAME +.Nm acl_get_entry +.Nd retrieve an ACL entry from an ACL +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_get_entry "acl_t acl" "int entry_id" "acl_entry_t *entry_p" +.Sh DESCRIPTION +The +.Fn acl_get_entry +function +is a POSIX.1e call that retrieves a descriptor for an ACL entry +specified by the argument +.Fa entry_d +within the ACL indicated by the argument +.Fa acl . +.Pp +If the value of +.Fa entry_id +is +.Dv ACL_FIRST_ENTRY , +then the function will return in +.Fa entry_p +a descriptor for the first ACL entry within +.Fa acl . +If a call is made to +.Fn acl_get_entry +with +.Fa entry_id +set to +.Dv ACL_NEXT_ENTRY +when there has not been either an initial successful call to +.Fn acl_get_entry , +or a previous successful call to +.Fn acl_create_entry , +.Fn acl_delete_entry , +.Fn acl_dup , +.Fn acl_from_text , +.Fn acl_get_fd , +.Fn acl_get_file , +.Fn acl_set_fd , +.Fn acl_set_file , +or +.Fn acl_valid , +then the result is unspecified. +.Sh RETURN VALUES +If the +.Fn acl_get_entry +function successfully obtains an ACL entry, a value of 1 is returned. +If the ACL has no ACL entries, the +.Fn acl_get_entry +returns a value of 0. +If the value of +.Fa entry_id +is +.Dv ACL_NEXT_ENTRY +and the last ACL entry in the ACL has already been returned by a +previous call to +.Fn acl_get_entry , +a value of 0 will be returned until a successful call with +.Fa entry_id +of +.Dv ACL_FIRST_ENTRY +is made. +Otherwise, a value of -1 will be returned and +the global variable +.Va errno +will be set to indicate the error. +.Sh ERRORS +The +.Fn acl_get_entry +fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa acl +does not point to a valid ACL. +Argument +.Fa entry_id +is neither +.Dv ACL_FIRST_ENTRY +nor +.Dv ACL_NEXT_ENTRY . +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_calc_mask 3 , +.Xr acl_create_entry 3 , +.Xr acl_delete_entry 3 , +.Xr acl_dup 3 , +.Xr acl_from_text 3 , +.Xr acl_get_fd 3 , +.Xr acl_get_file 3 , +.Xr acl_init 3 , +.Xr acl_set_fd 3 , +.Xr acl_set_file 3 , +.Xr acl_valid 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_get_entry +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_get_entry +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_get_perm_np.3 b/lib/libc/posix1e/acl_get_perm_np.3 new file mode 100644 index 0000000..7fe6c9c --- /dev/null +++ b/lib/libc/posix1e/acl_get_perm_np.3 @@ -0,0 +1,94 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd April 10, 2001 +.Dt ACL_GET_PERM_NP 3 +.Os +.Sh NAME +.Nm acl_get_perm_np +.Nd "check if a permission is set in a permission set" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_get_perm_np "acl_permset_t permset_d" "acl_perm_t perm" +.Sh DESCRIPTION +The +.Fn acl_get_perm_np +function +is a non-portable function that checks if a permission is set in +a permission set. +.Sh RETURN VALUES +If the permission in +.Fa perm +is set in the permission set +.Fa permset_d , +a value of +1 +is returned, otherwise a value of +0 +is returned. +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_get_perm_np +function will return a value of +\-1 +and set global variable +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa perm +does not contain a valid ACL permission or argument +.Fa permset_d +is not a valid ACL permset. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_add_perm 3 , +.Xr acl_clear_perms 3 , +.Xr acl_delete_perm 3 , +.Xr acl_get_permset 3 , +.Xr acl_set_permset 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_get_perm_np +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_get_perm_np +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_get_permset.3 b/lib/libc/posix1e/acl_get_permset.3 new file mode 100644 index 0000000..403b10a --- /dev/null +++ b/lib/libc/posix1e/acl_get_permset.3 @@ -0,0 +1,83 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_GET_PERMSET 3 +.Os +.Sh NAME +.Nm acl_get_permset +.Nd retrieve permission set from an ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_get_permset "acl_entry_t entry_d" "acl_permset_t *permset_p" +.Sh DESCRIPTION +The +.Fn acl_get_permset +function +is a POSIX.1e call that returns via +.Fa permset_p +a descriptor to the permission set in the ACL entry +.Fa entry_d . +Subsequent operations using the returned permission set operate +on the permission set within the ACL entry. +.Sh RETURN VALUES +.Rv -std acl_get_permset +.Sh ERRORS +The +.Fn acl_get_permset +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa entry_d +is not a valid descriptor for an ACL entry. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_add_perm 3 , +.Xr acl_clear_perms 3 , +.Xr acl_delete_perm 3 , +.Xr acl_set_permset 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_get_permset +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_get_permset +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_get_qualifier.3 b/lib/libc/posix1e/acl_get_qualifier.3 new file mode 100644 index 0000000..867809e --- /dev/null +++ b/lib/libc/posix1e/acl_get_qualifier.3 @@ -0,0 +1,140 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 13, 2001 +.Dt ACL_GET_QUALIFIER 3 +.Os +.Sh NAME +.Nm acl_get_qualifier +.Nd retrieve the qualifier from an ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft void * +.Fn acl_get_qualifier "acl_entry_t entry_d" +.Sh DESCRIPTION +The +.Fn acl_get_qualifier +function +is a POSIX.1e call that retrieves the qualifier of the tag for +the ACL entry indicated by the argument +.Fa entry_d +into working storage and returns a pointer to that storage. +.Pp +If the value of the tag type in the ACL entry referred to by +.Fa entry_d +is +.Dv ACL_USER , +then the value returned by +.Fn acl_get_qualifier +will be a pointer to type +.Vt uid_t . +.Pp +If the value of the tag type in +the ACL entry referred to by +.Fa entry_d +is +.Dv ACL_GROUP , +then the value returned by +.Fn acl_get_qualifier +will be a pointer to type +.Vt gid_t . +.Pp +If the value of the tag type in the ACL entry referred to by +.Fa entry_d +is +.Dv ACL_UNDEFINED_TAG , ACL_USER_OBJ , ACL_GROUP_OBJ , +.Dv ACL_OTHER , ACL_MASK , +or an implementation-defined value for which a qualifier +is not supported, then +.Fn acl_get_qualifier +will return a value of +.Vt ( void * ) Ns Dv NULL +and the function will fail. +.Pp +This function may cause memory to be allocated. +The caller should +free any releasable memory, when the new qualifier is no longer +required, by calling +.Fn acl_free +with +.Vt void * +as the argument. +.Sh RETURN VALUES +The +.Fn acl_get_qualifier +function returns a pointer to the allocated storage if successful; +otherwise a +.Dv NULL +pointer is returned and the global variable +.Va errno +is set to indicate the error. +.Sh ERRORS +The +.Fn acl_get_qualifier +fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa entry_d +does not point to a valid descriptor for an ACL entry. +The +value of the tag type in the ACL entry referenced by argument +.Fa entry_d +is not +.Dv ACL_USER +or +.Dv ACL_GROUP . +.It Bq Er ENOMEM +The value to be returned requires more memory than is allowed +by the hardware or system-imposed memory management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_create_entry 3 , +.Xr acl_free 3 , +.Xr acl_get_entry 3 , +.Xr acl_get_tag_type 3 , +.Xr acl_set_qualifier 3 , +.Xr acl_set_tag_type 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_get_qualifier +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_get_qualifier +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_get_tag_type.3 b/lib/libc/posix1e/acl_get_tag_type.3 new file mode 100644 index 0000000..ff22511 --- /dev/null +++ b/lib/libc/posix1e/acl_get_tag_type.3 @@ -0,0 +1,85 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_GET_TAG_TYPE 3 +.Os +.Sh NAME +.Nm acl_get_tag_type +.Nd retrieve the tag type from an ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_get_tag_type "acl_entry_t entry_d" "acl_tag_t *tag_type_p" +.Sh DESCRIPTION +The +.Fn acl_get_tag_type +function +is a POSIX.1e call that returns the tag type for the ACL entry +.Fa entry_d . +Upon successful completion, the location referred to by the argument +.Fa tag_type_p +will be set to the tag type of the ACL entry +.Fa entry_d . +.Sh RETURN VALUES +.Rv -std acl_get_tag_type +.Sh ERRORS +The +.Fn acl_get_tag_type +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa entry_d +is not a valid descriptor for an ACL entry; +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_create_entry 3 , +.Xr acl_get_entry 3 , +.Xr acl_get_qualifier 3 , +.Xr acl_init 3 , +.Xr acl_set_qualifier 3 , +.Xr acl_set_tag_type 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_get_tag_type +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_get_tag_type +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_init.3 b/lib/libc/posix1e/acl_init.3 new file mode 100644 index 0000000..dba8923 --- /dev/null +++ b/lib/libc/posix1e/acl_init.3 @@ -0,0 +1,111 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 28, 2000 +.Dt ACL_INIT 3 +.Os +.Sh NAME +.Nm acl_init +.Nd initialize ACL working storage +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft acl_t +.Fn acl_init "int count" +.Sh DESCRIPTION +The +.Fn acl_init +function allocates and initializes the working storage for an ACL of at +least +.Va count +ACL entries. +A pointer to the working storage is returned. +The working +storage allocated to contain the ACL is freed by a call to +.Xr acl_free 3 . +When the area is first allocated, it shall contain an ACL that contains +no ACL entries. +.Pp +This function may cause memory to be allocated. +The caller should free any +releasable memory, when the new ACL is no longer required, by calling +.Xr acl_free 3 +with the +.Va (void*)acl_t +as an argument. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +Upon successful completion, this function shall return a pointer to the +working storage. +Otherwise, a value of +.Va (acl_t)NULL +shall be returned, and +.Va errno +shall be set to indicate the error. +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_init +function shall return a value of +.Va (acl_t)NULL +and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EINVAL +The value of count is less than zero. +.It Bq Er ENOMEM +The +.Va acl_t +to be returned requires more memory than is allowed by the hardware or +system-imposed memory management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_free 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_init.c b/lib/libc/posix1e/acl_init.c new file mode 100644 index 0000000..6ce40de --- /dev/null +++ b/lib/libc/posix1e/acl_init.c @@ -0,0 +1,76 @@ +/*- + * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_init -- return a fresh acl structure + * acl_dup -- duplicate an acl and return the new copy + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +acl_t +acl_init(int count) +{ + acl_t acl; + + if (count > ACL_MAX_ENTRIES) { + errno = ENOMEM; + return (NULL); + } + if (count < 0) { + errno = EINVAL; + return (NULL); + } + + acl = malloc(sizeof(struct acl_t_struct)); + if (acl != NULL) + bzero(acl, sizeof(struct acl_t_struct)); + + return (acl); +} + +acl_t +acl_dup(acl_t acl) +{ + acl_t acl_new; + + acl_new = acl_init(ACL_MAX_ENTRIES); + if (acl_new != NULL) { + *acl_new = *acl; + acl->ats_cur_entry = 0; + acl_new->ats_cur_entry = 0; + } + + return (acl_new); +} diff --git a/lib/libc/posix1e/acl_perm.c b/lib/libc/posix1e/acl_perm.c new file mode 100644 index 0000000..c3375e0 --- /dev/null +++ b/lib/libc/posix1e/acl_perm.c @@ -0,0 +1,98 @@ +/* + * Copyright (c) 2001-2002 Chris D. Faulhaber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> +#include <string.h> + +/* + * acl_add_perm() (23.4.1): add the permission contained in perm to the + * permission set permset_d + */ +int +acl_add_perm(acl_permset_t permset_d, acl_perm_t perm) +{ + + if (permset_d) { + switch(perm) { + case ACL_READ: + case ACL_WRITE: + case ACL_EXECUTE: + *permset_d |= perm; + return (0); + } + } + + errno = EINVAL; + return (-1); +} + +/* + * acl_clear_perms() (23.4.3): clear all permisions from the permission + * set permset_d + */ +int +acl_clear_perms(acl_permset_t permset_d) +{ + + if (permset_d == NULL) { + errno = EINVAL; + return (-1); + } + + *permset_d = ACL_PERM_NONE; + + return (0); +} + +/* + * acl_delete_perm() (23.4.10): remove the permission in perm from the + * permission set permset_d + */ +int +acl_delete_perm(acl_permset_t permset_d, acl_perm_t perm) +{ + + if (permset_d) { + switch(perm) { + case ACL_READ: + case ACL_WRITE: + case ACL_EXECUTE: + *permset_d &= ~(perm & ACL_PERM_BITS); + return (0); + } + } + + errno = EINVAL; + return (-1); +} diff --git a/lib/libc/posix1e/acl_set.3 b/lib/libc/posix1e/acl_set.3 new file mode 100644 index 0000000..a2d50b8 --- /dev/null +++ b/lib/libc/posix1e/acl_set.3 @@ -0,0 +1,142 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 29, 2002 +.Dt ACL_SET 3 +.Os +.Sh NAME +.Nm acl_set_fd , +.Nm acl_set_fd_np , +.Nm acl_set_file , +.Nm acl_set_link_np +.Nd set an ACL for a file +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_set_fd "int fd" "acl_t acl" +.Ft int +.Fn acl_set_fd_np "int fd" "acl_t acl" "acl_type_t type" +.Ft int +.Fn acl_set_file "const char *path_p" "acl_type_t type" "acl_t acl" +.Ft int +.Fn acl_set_link_np "const char *path_p" "acl_type_t type" "acl_t acl" +.Sh DESCRIPTION +The +.Fn acl_set_fd , +.Fn acl_set_fd_np , +.Fn acl_set_file , +and +.Fn acl_set_link_np +each associate an ACL with an object referred to by +.Va fd +or +.Va path_p . +The +.Fn acl_set_fd_np +and +.Fn acl_set_link_np +functions are not POSIX.1e calls. +The +.Fn acl_set_fd +function allows only the setting of ACLs of type ACL_TYPE_ACCESS +where as +.Fn acl_set_fd_np +allows the setting of ACLs of any type. +The +.Fn acl_set_link_np +function acts on a symlink rather than its target, if the target of the +path is a symlink. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +.Rv -std +.Sh ERRORS +If any of the following conditions occur, these functions shall return +-1 and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EACCES +Search permission is denied for a component of the path prefix, or the +object exists and the process does not have appropriate access rights. +.It Bq Er EBADF +The +.Va fd +argument is not a valid file descriptor. +.It Bq Er EINVAL +Argument +.Va acl +does not point to a valid ACL for this object, or the ACL type +specified in +.Va type +is invalid for this object, or both. +.It Bq Er ENAMETOOLONG +A component of a pathname exceeded 255 characters, or an +entire path name exceeded 1023 characters. +.It Bq Er ENOENT +The named object does not exist, or the +.Va path_p +argument points to an empty string. +.It Bq Er ENOMEM +Insufficient memory available to fulfill request. +.It Bq Er ENOSPC +The directory or file system that would contain the new ACL cannot be +extended, or the file system is out of file allocation resources. +.It Bq Er EOPNOTSUPP +The file system does not support ACL retrieval. +.It Bq Er EROFS +This function requires modification of a file system which is currently +read-only. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_delete 3 , +.Xr acl_get 3 , +.Xr acl_valid 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_set.c b/lib/libc/posix1e/acl_set.c new file mode 100644 index 0000000..34d5a33 --- /dev/null +++ b/lib/libc/posix1e/acl_set.c @@ -0,0 +1,199 @@ +/*- + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_set_file -- set a file/directory ACL by name + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> +#include <stdlib.h> +#include <string.h> + +#include "acl_support.h" + +/* + * For POSIX.1e-semantic ACLs, do a presort so the kernel doesn't have to + * (the POSIX.1e semantic code will reject unsorted ACL submission). If it's + * not a semantic that the library knows about, just submit it flat and + * assume the caller knows what they're up to. + */ +int +acl_set_file(const char *path_p, acl_type_t type, acl_t acl) +{ + int error; + + if (acl == NULL || path_p == NULL) { + errno = EINVAL; + return (-1); + } + if (_posix1e_acl(acl, type)) { + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return (-1); + } + } + + acl->ats_cur_entry = 0; + + return (__acl_set_file(path_p, type, &acl->ats_acl)); +} + +int +acl_set_link_np(const char *path_p, acl_type_t type, acl_t acl) +{ + int error; + + if (acl == NULL || path_p == NULL) { + errno = EINVAL; + return (-1); + } + if (_posix1e_acl(acl, type)) { + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return (-1); + } + } + + acl->ats_cur_entry = 0; + + return (__acl_set_link(path_p, type, &acl->ats_acl)); +} + +int +acl_set_fd(int fd, acl_t acl) +{ + int error; + + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return(-1); + } + + acl->ats_cur_entry = 0; + + return (___acl_set_fd(fd, ACL_TYPE_ACCESS, &acl->ats_acl)); +} + +int +acl_set_fd_np(int fd, acl_t acl, acl_type_t type) +{ + int error; + + if (_posix1e_acl(acl, type)) { + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return (-1); + } + } + + acl->ats_cur_entry = 0; + + return (___acl_set_fd(fd, type, &acl->ats_acl)); +} + +/* + * acl_set_permset() (23.4.23): sets the permissions of ACL entry entry_d + * with the permissions in permset_d + */ +int +acl_set_permset(acl_entry_t entry_d, acl_permset_t permset_d) +{ + + if (!entry_d) { + errno = EINVAL; + return (-1); + } + + entry_d->ae_perm = *permset_d; + + return (0); +} + +/* + * acl_set_qualifier() sets the qualifier (ae_id) of the tag for + * ACL entry entry_d to the value referred to by tag_qualifier_p + */ +int +acl_set_qualifier(acl_entry_t entry_d, const void *tag_qualifier_p) +{ + if (!entry_d || !tag_qualifier_p) { + errno = EINVAL; + return (-1); + } + + switch(entry_d->ae_tag) { + case ACL_USER: + case ACL_GROUP: + entry_d->ae_id = *(uid_t *)tag_qualifier_p; + break; + default: + errno = EINVAL; + return (-1); + } + + return (0); +} + +/* + * acl_set_tag_type() sets the tag type for ACL entry entry_d to the + * value of tag_type + */ +int +acl_set_tag_type(acl_entry_t entry_d, acl_tag_t tag_type) +{ + + if (entry_d == NULL) { + errno = EINVAL; + return (-1); + } + + switch(tag_type) { + case ACL_USER_OBJ: + case ACL_USER: + case ACL_GROUP_OBJ: + case ACL_GROUP: + case ACL_MASK: + case ACL_OTHER: + entry_d->ae_tag = tag_type; + return (0); + } + + errno = EINVAL; + return (-1); +} diff --git a/lib/libc/posix1e/acl_set_permset.3 b/lib/libc/posix1e/acl_set_permset.3 new file mode 100644 index 0000000..152e226 --- /dev/null +++ b/lib/libc/posix1e/acl_set_permset.3 @@ -0,0 +1,81 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_SET_PERMSET 3 +.Os +.Sh NAME +.Nm acl_set_permset +.Nd set the permissions of an ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_set_permset "acl_entry_t entry_d" "acl_permset_t permset_d" +.Sh DESCRIPTION +The +.Fn acl_set_permset +function +is a POSIX.1e call that sets the permissions of ACL entry +.Fa entry_d +with the permissions contained in +.Fa permset_d . +.Sh RETURN VALUES +.Rv -std acl_set_permset +.Sh ERRORS +The +.Fn acl_set_permset +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa entry_d +is not a valid descriptor for an ACL entry. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_add_perm 3 , +.Xr acl_clear_perms 3 , +.Xr acl_delete_perm 3 , +.Xr acl_get_permset 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_set_permset +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_set_permset +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_set_qualifier.3 b/lib/libc/posix1e/acl_set_qualifier.3 new file mode 100644 index 0000000..3442a82 --- /dev/null +++ b/lib/libc/posix1e/acl_set_qualifier.3 @@ -0,0 +1,91 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_SET_QUALIFIER 3 +.Os +.Sh NAME +.Nm acl_set_qualifier +.Nd set ACL tag qualifier +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_set_qualifier "acl_entry_t entry_d" "const void *tag_qualifier_p" +.Sh DESCRIPTION +The +.Fn acl_set_qualifier +function +is a POSIX.1e call that sets the qualifier of the tag for the ACl entry +.Fa entry_d +to the value referred to by +.Fa tag_qualifier_p . +.Sh RETURN VALUES +.Rv -std acl_set_qualifier +.Sh ERRORS +The +.Fn acl_set_qualifier +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa entry_d +is not a valid descriptor for an ACL entry. +The tag type of the +ACL entry +.Fa entry_d +is not +.Dv ACL_USER +or +.Dv ACL_GROUP . +The value pointed to by +.Fa tag_qualifier_p +is not valid. +.It Bq Er ENOMEM +The value to be returned requires more memory than is allowed +by the hardware or system-imposed memory management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_get_qualifier 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_get_qualifier +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_get_qualifier +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_set_tag_type.3 b/lib/libc/posix1e/acl_set_tag_type.3 new file mode 100644 index 0000000..3830be7 --- /dev/null +++ b/lib/libc/posix1e/acl_set_tag_type.3 @@ -0,0 +1,81 @@ +.\"- +.\" Copyright (c) 2001 Chris D. Faulhaber +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE +.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +.\" POSSIBILITY OF SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd March 10, 2001 +.Dt ACL_SET_TAG_TYPE 3 +.Os +.Sh NAME +.Nm acl_set_tag_type +.Nd set the tag type of an ACL entry +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_set_tag_type "acl_entry_t entry_d" "acl_tag_t tag_type" +.Sh DESCRIPTION +The +.Fn acl_set_tag_type +function +is a POSIX.1e call that sets the ACL tag type of ACL entry +.Fa entry_d +to the value of +.Fa tag_type . +.Sh RETURN VALUES +.Rv -std acl_set_tag_type +.Sh ERRORS +The +.Fn acl_set_tag_type +function fails if: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Fa entry_d +is not a valid descriptor for an ACL entry. +Argument +.Fa tag_type +is not a valid ACL tag type. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_get_tag_type 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 . +The +.Fn acl_set_tag_type +function was added in +.Fx 5.0 . +.Sh AUTHORS +The +.Fn acl_set_tag_type +function was written by +.An Chris D. Faulhaber Aq jedgar@fxp.org . diff --git a/lib/libc/posix1e/acl_size.c b/lib/libc/posix1e/acl_size.c new file mode 100644 index 0000000..e8bd0a4 --- /dev/null +++ b/lib/libc/posix1e/acl_size.c @@ -0,0 +1,43 @@ +/* + * Copyright (c) 2001-2002 Chris D. Faulhaber + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR THE VOICES IN HIS HEAD BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" + +#include <errno.h> + +ssize_t +acl_size(acl_t acl) +{ + + errno = ENOSYS; + return (-1); +} diff --git a/lib/libc/posix1e/acl_support.c b/lib/libc/posix1e/acl_support.c new file mode 100644 index 0000000..b49808f --- /dev/null +++ b/lib/libc/posix1e/acl_support.c @@ -0,0 +1,384 @@ +/*- + * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * Support functionality for the POSIX.1e ACL interface + * These calls are intended only to be called within the library. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <errno.h> +#include <grp.h> +#include <pwd.h> +#include <stdio.h> +#include <stdlib.h> + +#include "acl_support.h" + +#define ACL_STRING_PERM_WRITE 'w' +#define ACL_STRING_PERM_READ 'r' +#define ACL_STRING_PERM_EXEC 'x' +#define ACL_STRING_PERM_NONE '-' + +/* + * _posix1e_acl_entry_compare -- compare two acl_entry structures to + * determine the order they should appear in. Used by _posix1e_acl_sort to + * sort ACL entries into the kernel-desired order -- i.e., the order useful + * for evaluation and O(n) validity checking. Beter to have an O(nlogn) sort + * in userland and an O(n) in kernel than to have both in kernel. + */ +typedef int (*compare)(const void *, const void *); +static int +_posix1e_acl_entry_compare(struct acl_entry *a, struct acl_entry *b) +{ + /* + * First, sort between tags -- conveniently defined in the correct + * order for verification. + */ + if (a->ae_tag < b->ae_tag) + return (-1); + if (a->ae_tag > b->ae_tag) + return (1); + + /* + * Next compare uids/gids on appropriate types. + */ + + if (a->ae_tag == ACL_USER || a->ae_tag == ACL_GROUP) { + if (a->ae_id < b->ae_id) + return (-1); + if (a->ae_id > b->ae_id) + return (1); + + /* shouldn't be equal, fall through to the invalid case */ + } + + /* + * Don't know how to sort multiple entries of the rest--either it's + * a bad entry, or there shouldn't be more than one. Ignore and the + * validity checker can get it later. + */ + return (0); +} + +/* + * _posix1e_acl_sort -- sort ACL entries in POSIX.1e-formatted ACLs + * Give the opportunity to fail, although we don't currently have a way + * to fail. + */ +int +_posix1e_acl_sort(acl_t acl) +{ + struct acl *acl_int; + + acl_int = &acl->ats_acl; + + qsort(&acl_int->acl_entry[0], acl_int->acl_cnt, + sizeof(struct acl_entry), (compare) _posix1e_acl_entry_compare); + + return (0); +} + +/* + * acl_posix1e -- in what situations should we acl_sort before submission? + * We apply posix1e ACL semantics for any ACL of type ACL_TYPE_ACCESS or + * ACL_TYPE_DEFAULT + */ +int +_posix1e_acl(acl_t acl, acl_type_t type) +{ + + return ((type == ACL_TYPE_ACCESS) || (type == ACL_TYPE_DEFAULT)); +} + +/* + * _posix1e_acl_check -- given an ACL, check its validity. This is mirrored + * from code in sys/kern/kern_acl.c, and if changes are made in one, they + * should be made in the other also. This copy of acl_check is made + * available * in userland for the benefit of processes wanting to check ACLs + * for validity before submitting them to the kernel, or for performing + * in userland file system checking. Needless to say, the kernel makes + * the real checks on calls to get/setacl. + * + * See the comments in kernel for explanation -- just briefly, it assumes + * an already sorted ACL, and checks based on that assumption. The + * POSIX.1e interface, acl_valid(), will perform the sort before calling + * this. Returns 0 on success, EINVAL on failure. + */ +int +_posix1e_acl_check(acl_t acl) +{ + struct acl *acl_int; + struct acl_entry *entry; /* current entry */ + uid_t obj_uid=-1, obj_gid=-1, highest_uid=0, highest_gid=0; + int stage = ACL_USER_OBJ; + int i = 0; + int count_user_obj=0, count_user=0, count_group_obj=0, + count_group=0, count_mask=0, count_other=0; + + acl_int = &acl->ats_acl; + + /* printf("_posix1e_acl_check: checking acl with %d entries\n", + acl->acl_cnt); */ + while (i < acl_int->acl_cnt) { + entry = &acl_int->acl_entry[i]; + + if ((entry->ae_perm | ACL_PERM_BITS) != ACL_PERM_BITS) + return (EINVAL); + + switch(entry->ae_tag) { + case ACL_USER_OBJ: + /* printf("_posix1e_acl_check: %d: ACL_USER_OBJ\n", + i); */ + if (stage > ACL_USER_OBJ) + return (EINVAL); + stage = ACL_USER; + count_user_obj++; + obj_uid = entry->ae_id; + break; + + case ACL_USER: + /* printf("_posix1e_acl_check: %d: ACL_USER\n", i); */ + if (stage > ACL_USER) + return (EINVAL); + stage = ACL_USER; + if (entry->ae_id == obj_uid) + return (EINVAL); + if (count_user && (entry->ae_id <= highest_uid)) + return (EINVAL); + highest_uid = entry->ae_id; + count_user++; + break; + + case ACL_GROUP_OBJ: + /* printf("_posix1e_acl_check: %d: ACL_GROUP_OBJ\n", + i); */ + if (stage > ACL_GROUP_OBJ) + return (EINVAL); + stage = ACL_GROUP; + count_group_obj++; + obj_gid = entry->ae_id; + break; + + case ACL_GROUP: + /* printf("_posix1e_acl_check: %d: ACL_GROUP\n", i); */ + if (stage > ACL_GROUP) + return (EINVAL); + stage = ACL_GROUP; + if (entry->ae_id == obj_gid) + return (EINVAL); + if (count_group && (entry->ae_id <= highest_gid)) + return (EINVAL); + highest_gid = entry->ae_id; + count_group++; + break; + + case ACL_MASK: + /* printf("_posix1e_acl_check: %d: ACL_MASK\n", i); */ + if (stage > ACL_MASK) + return (EINVAL); + stage = ACL_MASK; + count_mask++; + break; + + case ACL_OTHER: + /* printf("_posix1e_acl_check: %d: ACL_OTHER\n", i); */ + if (stage > ACL_OTHER) + return (EINVAL); + stage = ACL_OTHER; + count_other++; + break; + + default: + /* printf("_posix1e_acl_check: %d: INVALID\n", i); */ + return (EINVAL); + } + i++; + } + + if (count_user_obj != 1) + return (EINVAL); + + if (count_group_obj != 1) + return (EINVAL); + + if (count_mask != 0 && count_mask != 1) + return (EINVAL); + + if (count_other != 1) + return (EINVAL); + + return (0); +} + + +/* + * Given a uid/gid, return a username/groupname for the text form of an ACL. + * Note that we truncate user and group names, rather than error out, as + * this is consistent with other tools manipulating user and group names. + * XXX NOT THREAD SAFE, RELIES ON GETPWUID, GETGRGID + * XXX USES *PW* AND *GR* WHICH ARE STATEFUL AND THEREFORE THIS ROUTINE + * MAY HAVE SIDE-EFFECTS + */ +int +_posix1e_acl_id_to_name(acl_tag_t tag, uid_t id, ssize_t buf_len, char *buf) +{ + struct group *g; + struct passwd *p; + int i; + + switch(tag) { + case ACL_USER: + p = getpwuid(id); + if (!p) + i = snprintf(buf, buf_len, "%d", id); + else + i = snprintf(buf, buf_len, "%s", p->pw_name); + + if (i < 0) { + errno = ENOMEM; + return (-1); + } + return (0); + + case ACL_GROUP: + g = getgrgid(id); + if (g == NULL) + i = snprintf(buf, buf_len, "%d", id); + else + i = snprintf(buf, buf_len, "%s", g->gr_name); + + if (i < 0) { + errno = ENOMEM; + return (-1); + } + return (0); + + default: + return (EINVAL); + } +} + +/* + * Given a right-shifted permission (i.e., direct ACL_PERM_* mask), fill + * in a string describing the permissions. + */ +int +_posix1e_acl_perm_to_string(acl_perm_t perm, ssize_t buf_len, char *buf) +{ + + if (buf_len < _POSIX1E_ACL_STRING_PERM_MAXSIZE + 1) { + errno = ENOMEM; + return (-1); + } + + if ((perm | ACL_PERM_BITS) != ACL_PERM_BITS) { + errno = EINVAL; + return (-1); + } + + buf[3] = 0; /* null terminate */ + + if (perm & ACL_READ) + buf[0] = ACL_STRING_PERM_READ; + else + buf[0] = ACL_STRING_PERM_NONE; + + if (perm & ACL_WRITE) + buf[1] = ACL_STRING_PERM_WRITE; + else + buf[1] = ACL_STRING_PERM_NONE; + + if (perm & ACL_EXECUTE) + buf[2] = ACL_STRING_PERM_EXEC; + else + buf[2] = ACL_STRING_PERM_NONE; + + return (0); +} + +/* + * given a string, return a permission describing it + */ +int +_posix1e_acl_string_to_perm(char *string, acl_perm_t *perm) +{ + acl_perm_t myperm = ACL_PERM_NONE; + char *ch; + + ch = string; + while (*ch) { + switch(*ch) { + case ACL_STRING_PERM_READ: + myperm |= ACL_READ; + break; + case ACL_STRING_PERM_WRITE: + myperm |= ACL_WRITE; + break; + case ACL_STRING_PERM_EXEC: + myperm |= ACL_EXECUTE; + break; + case ACL_STRING_PERM_NONE: + break; + default: + return (EINVAL); + } + ch++; + } + + *perm = myperm; + return (0); +} + +/* + * Add an ACL entry without doing much checking, et al + */ +int +_posix1e_acl_add_entry(acl_t acl, acl_tag_t tag, uid_t id, acl_perm_t perm) +{ + struct acl *acl_int; + struct acl_entry *e; + + acl_int = &acl->ats_acl; + + if (acl_int->acl_cnt >= ACL_MAX_ENTRIES) { + errno = ENOMEM; + return (-1); + } + + e = &(acl_int->acl_entry[acl_int->acl_cnt]); + e->ae_perm = perm; + e->ae_tag = tag; + e->ae_id = id; + acl_int->acl_cnt++; + + return (0); +} diff --git a/lib/libc/posix1e/acl_support.h b/lib/libc/posix1e/acl_support.h new file mode 100644 index 0000000..a5c93c0 --- /dev/null +++ b/lib/libc/posix1e/acl_support.h @@ -0,0 +1,48 @@ +/*- + * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ +/* + * Support functionality for the POSIX.1e ACL interface + * These calls are intended only to be called within the library. + */ +#ifndef _ACL_SUPPORT_H +#define _ACL_SUPPORT_H + +#define _POSIX1E_ACL_STRING_PERM_MAXSIZE 3 /* read, write, exec */ + +int _posix1e_acl_check(acl_t acl); +int _posix1e_acl_sort(acl_t acl); +int _posix1e_acl(acl_t acl, acl_type_t type); +int _posix1e_acl_id_to_name(acl_tag_t tag, uid_t id, ssize_t buf_len, + char *buf); +int _posix1e_acl_perm_to_string(acl_perm_t perm, ssize_t buf_len, + char *buf); +int _posix1e_acl_string_to_perm(char *string, acl_perm_t *perm); +int _posix1e_acl_add_entry(acl_t acl, acl_tag_t tag, uid_t id, + acl_perm_t perm); + +#endif diff --git a/lib/libc/posix1e/acl_to_text.3 b/lib/libc/posix1e/acl_to_text.3 new file mode 100644 index 0000000..833a6d2 --- /dev/null +++ b/lib/libc/posix1e/acl_to_text.3 @@ -0,0 +1,141 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 28, 2000 +.Dt ACL_TO_TEXT 3 +.Os +.Sh NAME +.Nm acl_to_text +.Nd convert an ACL to text +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft char * +.Fn acl_to_text "acl_t acl" "ssize_t *len_p" +.Sh DESCRIPTION +The +.Fn acl_to_text +function translates the ACL pointed to by argument +.Va acl +into a NULL terminated character string. +If the pointer +.Va len_p +is not NULL, then the function shall return the length of the string (not +including the NULL terminator) in the location pointed to by +.Va len_p . +The format of the text string returned by +.Fn acl_to_text +shall be the POSIX.1e long ACL form. +.Pp +This function allocates any memory necessary to contain the string and +returns a pointer to the string. +The caller should free any releasable +memory, when the new string is no longer required, by calling +.Xr acl_free 3 +with the +.Va (void*)char +as an argument. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +Upon successful completion, the function shall return a pointer to the +long text form of an ACL. +Otherwise, a value of +.Va (char*)NULL +shall be returned and +.Va errno +shall be set to indicate the error. +.Sh ERRORS +If any of the following conditions occur, the +.Fn acl_to_text +function shall return a value of +.Va (acl_t)NULL +and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EINVAL +Argument +.Va acl +does not point to a valid ACL. +.Pp +The ACL denoted by +.Va acl +contains one or more improperly formed ACL entries, or for some other +reason cannot be translated into a text form of an ACL. +.It Bq Er ENOMEM +The character string to be returned requires more memory than is allowed +by the hardware or software-imposed memory management constraints. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_free 3 , +.Xr acl_from_text 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson +.Sh BUGS +The +.Fn acl_from_text +and +.Fn acl_to_text +functions +rely on the +.Xr getpwent 3 +library calls to manage username and uid mapping, as well as the +.Xr getgrent 3 +library calls to manage groupname and gid mapping. +These calls are not +thread safe, and so transitively, neither are +.Fn acl_from_text +and +.Fn acl_to_text . +These functions may also interfere with stateful +calls associated with the +.Fn getpwent +and +.Fn getgrent +calls. diff --git a/lib/libc/posix1e/acl_to_text.c b/lib/libc/posix1e/acl_to_text.c new file mode 100644 index 0000000..f2905c3 --- /dev/null +++ b/lib/libc/posix1e/acl_to_text.c @@ -0,0 +1,237 @@ +/*- + * Copyright (c) 1999-2002 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_to_text - return a text string with a text representation of the acl + * in it. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <sys/errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <utmp.h> + +#include "acl_support.h" + +/* + * acl_to_text - generate a text form of an acl + * spec says nothing about output ordering, so leave in acl order + * + * This function will not produce nice results if it is called with + * a non-POSIX.1e semantics ACL. + */ +char * +acl_to_text(acl_t acl, ssize_t *len_p) +{ + struct acl *acl_int; + char *buf, *tmpbuf; + char name_buf[UT_NAMESIZE+1]; + char perm_buf[_POSIX1E_ACL_STRING_PERM_MAXSIZE+1], + effective_perm_buf[_POSIX1E_ACL_STRING_PERM_MAXSIZE+1]; + int i, error, len; + uid_t ae_id; + acl_tag_t ae_tag; + acl_perm_t ae_perm, effective_perm, mask_perm; + + buf = strdup(""); + if (buf == NULL) + return(NULL); + + if (acl == NULL) { + errno = EINVAL; + return(NULL); + } + + acl_int = &acl->ats_acl; + + mask_perm = ACL_PERM_BITS; /* effective is regular if no mask */ + for (i = 0; i < acl_int->acl_cnt; i++) + if (acl_int->acl_entry[i].ae_tag == ACL_MASK) + mask_perm = acl_int->acl_entry[i].ae_perm; + + for (i = 0; i < acl_int->acl_cnt; i++) { + ae_tag = acl_int->acl_entry[i].ae_tag; + ae_id = acl_int->acl_entry[i].ae_id; + ae_perm = acl_int->acl_entry[i].ae_perm; + + switch(ae_tag) { + case ACL_USER_OBJ: + error = _posix1e_acl_perm_to_string(ae_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf); + if (error) + goto error_label; + len = asprintf(&tmpbuf, "%suser::%s\n", buf, + perm_buf); + if (len == -1) + goto error_label; + free(buf); + buf = tmpbuf; + break; + + case ACL_USER: + error = _posix1e_acl_perm_to_string(ae_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf); + if (error) + goto error_label; + + error = _posix1e_acl_id_to_name(ae_tag, ae_id, + UT_NAMESIZE+1, name_buf); + if (error) + goto error_label; + + effective_perm = ae_perm & mask_perm; + if (effective_perm != ae_perm) { + error = _posix1e_acl_perm_to_string( + effective_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, + effective_perm_buf); + if (error) + goto error_label; + len = asprintf(&tmpbuf, "%suser:%s:%s\t\t# " + "effective: %s\n", + buf, name_buf, perm_buf, + effective_perm_buf); + } else { + len = asprintf(&tmpbuf, "%suser:%s:%s\n", buf, + name_buf, perm_buf); + } + if (len == -1) + goto error_label; + free(buf); + buf = tmpbuf; + break; + + case ACL_GROUP_OBJ: + error = _posix1e_acl_perm_to_string(ae_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf); + if (error) + goto error_label; + + effective_perm = ae_perm & mask_perm; + if (effective_perm != ae_perm) { + error = _posix1e_acl_perm_to_string( + effective_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, + effective_perm_buf); + if (error) + goto error_label; + len = asprintf(&tmpbuf, "%sgroup::%s\t\t# " + "effective: %s\n", + buf, perm_buf, effective_perm_buf); + } else { + len = asprintf(&tmpbuf, "%sgroup::%s\n", buf, + perm_buf); + } + if (len == -1) + goto error_label; + free(buf); + buf = tmpbuf; + break; + + case ACL_GROUP: + error = _posix1e_acl_perm_to_string(ae_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf); + if (error) + goto error_label; + + error = _posix1e_acl_id_to_name(ae_tag, ae_id, + UT_NAMESIZE+1, name_buf); + if (error) + goto error_label; + + effective_perm = ae_perm & mask_perm; + if (effective_perm != ae_perm) { + error = _posix1e_acl_perm_to_string( + effective_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, + effective_perm_buf); + if (error) + goto error_label; + len = asprintf(&tmpbuf, "%sgroup:%s:%s\t\t# " + "effective: %s\n", + buf, name_buf, perm_buf, + effective_perm_buf); + } else { + len = asprintf(&tmpbuf, "%sgroup:%s:%s\n", buf, + name_buf, perm_buf); + } + if (len == -1) + goto error_label; + free(buf); + buf = tmpbuf; + break; + + case ACL_MASK: + error = _posix1e_acl_perm_to_string(ae_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf); + if (error) + goto error_label; + + len = asprintf(&tmpbuf, "%smask::%s\n", buf, + perm_buf); + if (len == -1) + goto error_label; + free(buf); + buf = tmpbuf; + break; + + case ACL_OTHER: + error = _posix1e_acl_perm_to_string(ae_perm, + _POSIX1E_ACL_STRING_PERM_MAXSIZE+1, perm_buf); + if (error) + goto error_label; + + len = asprintf(&tmpbuf, "%sother::%s\n", buf, + perm_buf); + if (len == -1) + goto error_label; + free(buf); + buf = tmpbuf; + break; + + default: + errno = EINVAL; + goto error_label; + } + } + + if (len_p) { + *len_p = strlen(buf); + } + return (buf); + +error_label: + /* jump to here sets errno already, we just clean up */ + if (buf) free(buf); + return (NULL); +} diff --git a/lib/libc/posix1e/acl_valid.3 b/lib/libc/posix1e/acl_valid.3 new file mode 100644 index 0000000..83f7746 --- /dev/null +++ b/lib/libc/posix1e/acl_valid.3 @@ -0,0 +1,170 @@ +.\"- +.\" Copyright (c) 2000, 2002 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" This software was developed by Robert Watson for the TrustedBSD Project. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 29, 2002 +.Dt ACL_VALID 3 +.Os +.Sh NAME +.Nm acl_valid , +.Nm acl_valid_fd_np , +.Nm acl_valid_file_np , +.Nm acl_valid_link_np +.Nd validate an ACL +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.Ft int +.Fn acl_valid "acl_t acl" +.Ft int +.Fn acl_valid_fd_np "int fd" "acl_type_t type" "acl_t acl" +.Ft int +.Fn acl_valid_file_np "const char *path_p" "acl_type_t type" "acl_t acl" +.Ft int +.Fn acl_valid_link_np "const char *path_p" "acl_type_t type" "acl_t acl" +.Sh DESCRIPTION +These functions check that the ACL referred to by the argument +.Va acl +is valid. +The POSIX.1e routine, +.Fn acl_valid , +checks this validity only with POSIX.1e ACL semantics, and irrespective +of the context in which the ACL is to be used. +The non-portable forms, +.Fn acl_valid_fd_np , +.Fn acl_valid_file_np , +and +.Fn acl_valid_link_np +allow an ACL to be checked in the context of a specific acl type, +.Va type , +and file system object. +In environments where additional ACL types are +supported than just POSIX.1e, this makes more sense. +Whereas +.Fn acl_valid_file_np +will follow the symlink if the specified path is to a symlink, +.Fn acl_valid_link_np +will not. +.Pp +For POSIX.1e semantics, the checks include: +.Bl -bullet +.It +The three required entries +.Dv ( ACL_USER_OBJ , ACL_GROUP_OBJ , +and +.Dv ACL_OTHER ) +shall exist exactly once in the ACL. +If the ACL contains any +.Dv ACL_USER , ACL_GROUP , +or any other +implementation-defined entries in the file group class +then one +.Dv ACL_MASK +entry shall also be required. +The ACL shall contain at most one +.Dv ACL_MASK +entry. +.It +The qualifier field shall be unique among all entries of +the same POSIX.1e ACL facility defined tag type. +The +tag type field shall contain valid values including any +implementation-defined values. +Validation of the values +of the qualifier field is implementation-defined. +.El +.Pp +The POSIX.1e +.Fn acl_valid +function may reorder the ACL for the purposes of verification; the +non-portable validation functions will not. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time. +.Sh RETURN VALUES +.Rv -std +.Sh ERRORS +If any of the following conditions occur, these functions shall return +-1 and set +.Va errno +to the corresponding value: +.Bl -tag -width Er +.It Bq Er EACCES +Search permission is denied for a component of the path prefix, or the +object exists and the process does not have appropriate access rights. +.It Bq Er EBADF +The +.Va fd +argument is not a valid file descriptor. +.It Bq Er EINVAL +Argument +.Va acl +does not point to a valid ACL. +.Pp +One or more of the required ACL entries is not present in +.Va acl . +.Pp +The ACL contains entries that are not unique. +.Pp +The file system rejects the ACL based on fs-specific semantics issues. +.It Bq Er ENAMETOOLONG +A component of a pathname exceeded 255 characters, or an +entire path name exceeded 1023 characters. +.It Bq Er ENOENT +The named object does not exist, or the +.Va path_p +argument points to an empty string. +.It Bq Er ENOMEM +Insufficient memory available to fulfill request. +.It Bq Er EOPNOTSUPP +The file system does not support ACL retrieval. +.El +.Sh SEE ALSO +.Xr acl 3 , +.Xr acl_get 3 , +.Xr acl_init 3 , +.Xr acl_set 3 , +.Xr posix1e 3 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion +of the draft continues on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 , +and development continues. +.Sh AUTHORS +.An Robert N M Watson diff --git a/lib/libc/posix1e/acl_valid.c b/lib/libc/posix1e/acl_valid.c new file mode 100644 index 0000000..9b1f9b9 --- /dev/null +++ b/lib/libc/posix1e/acl_valid.c @@ -0,0 +1,136 @@ +/*- + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * acl_valid -- POSIX.1e ACL check routine + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include "namespace.h" +#include <sys/acl.h> +#include "un-namespace.h" +#include <sys/errno.h> +#include <stdlib.h> + +#include "acl_support.h" + +/* + * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid, + * and errno set to EINVAL. + * + * Implemented by calling the acl_check routine in acl_support, which + * requires ordering. We call acl_support's _posix1e_acl_sort to make this + * true. POSIX.1e allows acl_valid() to reorder the ACL as it sees fit. + * + * This call is deprecated, as it doesn't ask whether the ACL is valid + * for a particular target. However, this call is standardized, unlike + * the other two forms. + */ +int +acl_valid(acl_t acl) +{ + int error; + + if (acl == NULL) { + errno = EINVAL; + return (-1); + } + _posix1e_acl_sort(acl); + error = _posix1e_acl_check(acl); + if (error) { + errno = error; + return (-1); + } else { + return (0); + } +} + +int +acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl) +{ + int error; + + if (pathp == NULL || acl == NULL) { + errno = EINVAL; + return (-1); + } + if (_posix1e_acl(acl, type)) { + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return (-1); + } + } + + return (__acl_aclcheck_file(pathp, type, &acl->ats_acl)); +} + +int +acl_valid_link_np(const char *pathp, acl_type_t type, acl_t acl) +{ + int error; + + if (pathp == NULL || acl == NULL) { + errno = EINVAL; + return (-1); + } + if (_posix1e_acl(acl, type)) { + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return (-1); + } + } + + return (__acl_aclcheck_link(pathp, type, &acl->ats_acl)); +} + +int +acl_valid_fd_np(int fd, acl_type_t type, acl_t acl) +{ + int error; + + if (acl == NULL) { + errno = EINVAL; + return (-1); + } + if (_posix1e_acl(acl, type)) { + error = _posix1e_acl_sort(acl); + if (error) { + errno = error; + return (-1); + } + } + + acl->ats_cur_entry = 0; + + + return (___acl_aclcheck_fd(fd, type, &acl->ats_acl)); +} diff --git a/lib/libc/posix1e/extattr.3 b/lib/libc/posix1e/extattr.3 new file mode 100644 index 0000000..5e60686 --- /dev/null +++ b/lib/libc/posix1e/extattr.3 @@ -0,0 +1,100 @@ +.\" +.\" Copyright (c) 2001 Dima Dorfman <dd@FreeBSD.org> +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd June 24, 2001 +.Dt EXTATTR 3 +.Os +.Sh NAME +.Nm extattr_namespace_to_string , +.Nm extattr_string_to_namespace +.Nd convert an extended attribute namespace identifier to a string and +vice versa +.Sh LIBRARY +.Lb libutil +.Sh SYNOPSIS +.In sys/extattr.h +.In libutil.h +.Ft int +.Fn extattr_namespace_to_string "int attrnamespace" "char **string" +.Ft int +.Fn extattr_string_to_namespace "const char *string" "int *attrnamespace" +.Sh DESCRIPTION +The +.Fn extattr_namespace_to_string +function converts a VFS extended attribute identifier to a human-readable +string; +the +.Fn extattr_string_to_namespace +function undoes the aforementioned operation, +and converts a human-readable string representing a namespace to a +namespace identifier. +Although a file system may implement arbitrary namespaces, +these functions only support the +.Dv EXTATTR_NAMESPACE_USER +.Pq Dq user +and +.Dv EXTATTR_NAMESPACE_SYSTEM +.Pq Dq system +namespaces, +which are defined in +.Xr extattr 9 . +.Pp +These functions are meant to be used in error reporting and other +interactive tasks. +For example, +instead of printing the integer identifying an extended attribute in +an error message, +a program might use +.Fn extattr_namespace_to_string +to obtain a human-readable representation. +Likewise, +instead of requiring a user to enter the integer representing a namespace, +an interactive program might ask for a name and use +.Fn extattr_string_to_namespace +to get the desired identifier. +.Sh RETURN VALUES +If any of the calls are unsuccessful, the value \-1 is returned +and the global variable +.Va errno +is set to indicate the error. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EINVAL +The requested namespace could not be identified. +.El +.Sh SEE ALSO +.Xr extattr 2 , +.Xr getextattr 8 , +.Xr setextattr 8 , +.Xr extattr 9 +.Sh HISTORY +Extended attribute support was developed as part of the +.Tn TrustedBSD +Project, and introduced in +.Fx 5.0 . +It was developed to support security extensions requiring additional labels +to be associated with each file or directory. diff --git a/lib/libc/posix1e/extattr.c b/lib/libc/posix1e/extattr.c new file mode 100644 index 0000000..5a9ddce --- /dev/null +++ b/lib/libc/posix1e/extattr.c @@ -0,0 +1,77 @@ +/*- + * Copyright (c) 2001 Robert N. M. Watson + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* + * TrustedBSD: Utility functions for extended attributes. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/types.h> +#include <sys/extattr.h> + +#include <errno.h> +#include <libutil.h> +#include <string.h> + +int +extattr_namespace_to_string(int attrnamespace, char **string) +{ + + switch(attrnamespace) { + case EXTATTR_NAMESPACE_USER: + if (string != NULL) + *string = strdup(EXTATTR_NAMESPACE_USER_STRING); + return (0); + + case EXTATTR_NAMESPACE_SYSTEM: + if (string != NULL) + *string = strdup(EXTATTR_NAMESPACE_SYSTEM_STRING); + return (0); + + default: + errno = EINVAL; + return (-1); + } +} + +int +extattr_string_to_namespace(const char *string, int *attrnamespace) +{ + + if (!strcmp(string, EXTATTR_NAMESPACE_USER_STRING)) { + if (attrnamespace != NULL) + *attrnamespace = EXTATTR_NAMESPACE_USER; + return (0); + } else if (!strcmp(string, EXTATTR_NAMESPACE_SYSTEM_STRING)) { + if (attrnamespace != NULL) + *attrnamespace = EXTATTR_NAMESPACE_SYSTEM; + return (0); + } else { + errno = EINVAL; + return (-1); + } +} diff --git a/lib/libc/posix1e/mac.3 b/lib/libc/posix1e/mac.3 new file mode 100644 index 0000000..ac6affd --- /dev/null +++ b/lib/libc/posix1e/mac.3 @@ -0,0 +1,187 @@ +.\" Copyright (c) 2001, 2003 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and Network Associates +.\" Laboratories, the Security Research Division of Network Associates, +.\" Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part +.\" of the DARPA CHATS research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd April 19, 2003 +.Dt MAC 3 +.Os +.Sh NAME +.Nm mac +.Nd introduction to the MAC security API +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/mac.h +.Pp +In the kernel configuration file: +.Cd "options MAC" +.Sh DESCRIPTION +.Fx +permits administrators to define Mandatory Access Control labels +defining levels for the privacy and integrity of data, +overriding discretionary policies +for those objects. +Not all objects currently provide support for MAC labels, +and MAC support must be explicitly enabled by the administrator. +The library calls include routines to retrieve, duplicate, +and set MAC labels associated with files and processes. +.Pp +POSIX.1e describes a set of MAC manipulation routines +to manage the contents of MAC labels, +as well as their relationships with +files and processes; +almost all of these support routines +are implemented in +.Fx . +.Pp +Available functions, sorted by behavior, include: +.Bl -tag -width indent +.It Fn mac_get_fd +This function is described in +.Xr mac_get 3 , +and may be used to retrieve the +MAC label associated with +a specific file descriptor. +.It Fn mac_get_file +This function is described in +.Xr mac_get 3 , +and may be used to retrieve the +MAC label associated with +a named file. +.It Fn mac_get_proc +This function is described in +.Xr mac_get 3 , +and may be used to retrieve the +MAC label associated with +the calling process. +.It Fn mac_set_fd +This function is described in +.Xr mac_set 3 , +and may be used to set the +MAC label associated with +a specific file descriptor. +.It Fn mac_set_file +This function is described in +.Xr mac_set 3 , +and may be used to set the +MAC label associated with +a named file. +.It Fn mac_set_proc +This function is described in +.Xr mac_set 3 , +and may be used to set the +MAC label associated with +the calling process. +.It Fn mac_free +This function is described in +.Xr mac_free 3 , +and may be used to free +userland working MAC label storage. +.It Fn mac_from_text +This function is described in +.Xr mac_text 3 , +and may be used to convert +a text-form MAC label +into a working +.Vt mac_t . +.It Fn mac_prepare +.It Fn mac_prepare_file_label +.It Fn mac_prepare_ifnet_label +.It Fn mac_prepare_process_label +These functions are described in +.Xr mac_prepare 3 , +and may be used to preallocate storage for MAC label retrieval. +.Xr mac_prepare 3 +prepares a label based on caller-specified label names; the other calls +rely on the default configuration specified in +.Xr mac.conf 5 . +.It Fn mac_to_text +This function is described in +.Xr mac_text 3 , +and may be used to convert a +.Vt mac_t +into a text-form MAC label. +.El +The behavior of some of these calls is influenced by the configuration +settings found in +.Xr mac.conf 5 , +the MAC library run-time configuration file. +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features +is +.Ud . +.Sh FILES +.Bl -tag -width ".Pa /etc/mac.conf" -compact +.It Pa /etc/mac.conf +MAC library configuration file, documented in +.Xr mac.conf 5 . +Provides default behavior for applications aware of MAC labels on +system objects, but without policy-specific knowledge. +.El +.Sh SEE ALSO +.Xr mac_free 3 , +.Xr mac_get 3 , +.Xr mac_prepare 3 , +.Xr mac_set 3 , +.Xr mac_text 3 , +.Xr mac 4 , +.Xr mac.conf 5 , +.Xr mac 9 +.Sh STANDARDS +These APIs are loosely based on the APIs described in POSIX.1e. +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft +continues on the cross-platform POSIX.1e implementation mailing list. +To join this list, see the +.Fx +POSIX.1e implementation page +for more information. +However, the resemblance of these APIs to the POSIX APIs is only loose, +as the POSIX APIs were unable to express many notions required for +flexible and extensible access control. +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. +.Sh BUGS +The +.Tn TrustedBSD +MAC Framework and associated policies, interfaces, and +applications are considered to be an experimental feature in +.Fx . +Sites considering production deployment should keep the experimental +status of these services in mind during any deployment process. +See also +.Xr mac 9 +for related considerations regarding the kernel framework. diff --git a/lib/libc/posix1e/mac.c b/lib/libc/posix1e/mac.c new file mode 100644 index 0000000..ded9059 --- /dev/null +++ b/lib/libc/posix1e/mac.c @@ -0,0 +1,448 @@ +/* + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * Copyright (c) 2002, 2003 Networks Associates Technology, Inc. + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * This software was developed for the FreeBSD Project in part by Network + * Associates Laboratories, the Security Research Division of Network + * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), + * as part of the DARPA CHATS research program. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/sysctl.h> + +#include <dlfcn.h> +#include <errno.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include <sys/mac.h> + +static int internal_initialized; + +/* + * Maintain a list of default label preparations for various object + * types. Each name will appear only once in the list. + * + * XXXMAC: Not thread-safe. + */ +static LIST_HEAD(, label_default) label_default_head; +struct label_default { + char *ld_name; + char *ld_labels; + LIST_ENTRY(label_default) ld_entries; +}; + +static void +mac_destroy_labels(void) +{ + struct label_default *ld; + + while ((ld = LIST_FIRST(&label_default_head))) { + free(ld->ld_name); + free(ld->ld_labels); + LIST_REMOVE(ld, ld_entries); + free(ld); + } +} + +static void +mac_destroy_internal(void) +{ + + mac_destroy_labels(); + + internal_initialized = 0; +} + +static int +mac_add_type(const char *name, const char *labels) +{ + struct label_default *ld, *ld_new; + char *name_dup, *labels_dup; + + /* + * Speculatively allocate all the memory now to avoid allocating + * later when we will someday hold a mutex. + */ + name_dup = strdup(name); + if (name_dup == NULL) { + errno = ENOMEM; + return (-1); + } + labels_dup = strdup(labels); + if (labels_dup == NULL) { + free(name_dup); + errno = ENOMEM; + return (-1); + } + ld_new = malloc(sizeof(*ld)); + if (ld_new == NULL) { + free(name_dup); + free(labels_dup); + errno = ENOMEM; + return (-1); + } + + /* + * If the type is already present, replace the current entry + * rather than add a new instance. + */ + for (ld = LIST_FIRST(&label_default_head); ld != NULL; + ld = LIST_NEXT(ld, ld_entries)) { + if (strcmp(name, ld->ld_name) == 0) + break; + } + + if (ld != NULL) { + free(ld->ld_labels); + ld->ld_labels = labels_dup; + labels_dup = NULL; + } else { + ld = ld_new; + ld->ld_name = name_dup; + ld->ld_labels = labels_dup; + + ld_new = NULL; + name_dup = NULL; + labels_dup = NULL; + + LIST_INSERT_HEAD(&label_default_head, ld, ld_entries); + } + + if (name_dup != NULL) + free(name_dup); + if (labels_dup != NULL) + free(labels_dup); + if (ld_new != NULL) + free(ld_new); + + return (0); +} + +static char * +next_token(char **string) +{ + char *token; + + token = strsep(string, " \t"); + while (token != NULL && *token == '\0') + token = strsep(string, " \t"); + + return (token); +} + +static int +mac_init_internal(int ignore_errors) +{ + const char *filename; + char line[LINE_MAX]; + FILE *file; + int error; + + error = 0; + + LIST_INIT(&label_default_head); + + if (!issetugid() && getenv("MAC_CONFFILE") != NULL) + filename = getenv("MAC_CONFFILE"); + else + filename = MAC_CONFFILE; + file = fopen(filename, "r"); + if (file == NULL) + return (0); + + while (fgets(line, LINE_MAX, file)) { + char *comment, *parse, *statement; + + if (line[strlen(line)-1] == '\n') + line[strlen(line)-1] = '\0'; + else { + if (ignore_errors) + continue; + fclose(file); + error = EINVAL; + goto just_return; + } + + /* Remove any comment. */ + comment = line; + parse = strsep(&comment, "#"); + + /* Blank lines OK. */ + statement = next_token(&parse); + if (statement == NULL) + continue; + + if (strcmp(statement, "default_labels") == 0) { + char *name, *labels; + + name = next_token(&parse); + labels = next_token(&parse); + if (name == NULL || labels == NULL || + next_token(&parse) != NULL) { + if (ignore_errors) + continue; + error = EINVAL; + fclose(file); + goto just_return; + } + + if (mac_add_type(name, labels) == -1) { + if (ignore_errors) + continue; + fclose(file); + goto just_return; + } + } else if (strcmp(statement, "default_ifnet_labels") == 0 || + strcmp(statement, "default_file_labels") == 0 || + strcmp(statement, "default_process_labels") == 0) { + char *labels, *type; + + if (strcmp(statement, "default_ifnet_labels") == 0) + type = "ifnet"; + else if (strcmp(statement, "default_file_labels") == 0) + type = "file"; + else if (strcmp(statement, "default_process_labels") == + 0) + type = "process"; + + labels = next_token(&parse); + if (labels == NULL || next_token(&parse) != NULL) { + if (ignore_errors) + continue; + error = EINVAL; + fclose(file); + goto just_return; + } + + if (mac_add_type(type, labels) == -1) { + if (ignore_errors) + continue; + fclose(file); + goto just_return; + } + } else { + if (ignore_errors) + continue; + fclose(file); + error = EINVAL; + goto just_return; + } + } + + fclose(file); + + internal_initialized = 1; + +just_return: + if (error != 0) + mac_destroy_internal(); + return (error); +} + +static int +mac_maybe_init_internal(void) +{ + + if (!internal_initialized) + return (mac_init_internal(1)); + else + return (0); +} + +int +mac_reload(void) +{ + + if (internal_initialized) + mac_destroy_internal(); + return (mac_init_internal(0)); +} + +int +mac_free(struct mac *mac) +{ + + if (mac->m_string != NULL) + free(mac->m_string); + free(mac); + + return (0); +} + +int +mac_from_text(struct mac **mac, const char *text) +{ + + *mac = (struct mac *) malloc(sizeof(**mac)); + if (*mac == NULL) + return (ENOMEM); + + (*mac)->m_string = strdup(text); + if ((*mac)->m_string == NULL) { + free(*mac); + *mac = NULL; + return (ENOMEM); + } + + (*mac)->m_buflen = strlen((*mac)->m_string)+1; + + return (0); +} + +int +mac_to_text(struct mac *mac, char **text) +{ + + *text = strdup(mac->m_string); + if (*text == NULL) + return (ENOMEM); + return (0); +} + +int +mac_prepare(struct mac **mac, const char *elements) +{ + + if (strlen(elements) >= MAC_MAX_LABEL_BUF_LEN) + return (EINVAL); + + *mac = (struct mac *) malloc(sizeof(**mac)); + if (*mac == NULL) + return (ENOMEM); + + (*mac)->m_string = malloc(MAC_MAX_LABEL_BUF_LEN); + if ((*mac)->m_string == NULL) { + free(*mac); + *mac = NULL; + return (ENOMEM); + } + + strcpy((*mac)->m_string, elements); + (*mac)->m_buflen = MAC_MAX_LABEL_BUF_LEN; + + return (0); +} + +int +mac_prepare_type(struct mac **mac, const char *name) +{ + struct label_default *ld; + int error; + + error = mac_maybe_init_internal(); + if (error != 0) + return (error); + + for (ld = LIST_FIRST(&label_default_head); ld != NULL; + ld = LIST_NEXT(ld, ld_entries)) { + if (strcmp(name, ld->ld_name) == 0) + return (mac_prepare(mac, ld->ld_labels)); + } + + errno = ENOENT; + return (-1); /* XXXMAC: ENOLABEL */ +} + +int +mac_prepare_ifnet_label(struct mac **mac) +{ + + return (mac_prepare_type(mac, "ifnet")); +} + +int +mac_prepare_file_label(struct mac **mac) +{ + + return (mac_prepare_type(mac, "file")); +} + +int +mac_prepare_packet_label(struct mac **mac) +{ + + return (mac_prepare_type(mac, "packet")); +} + +int +mac_prepare_process_label(struct mac **mac) +{ + + return (mac_prepare_type(mac, "process")); +} + +/* + * Simply test whether the TrustedBSD/MAC MIB tree is present; if so, + * return 1 to indicate that the system has MAC enabled overall or for + * a given policy. + */ +int +mac_is_present(const char *policyname) +{ + int mib[5]; + size_t siz; + char *mibname; + int error; + + if (policyname != NULL) { + if (policyname[strcspn(policyname, ".=")] != '\0') { + errno = EINVAL; + return (-1); + } + mibname = malloc(sizeof("security.mac.") - 1 + + strlen(policyname) + sizeof(".enabled")); + if (mibname == NULL) + return (-1); + strcpy(mibname, "security.mac."); + strcat(mibname, policyname); + strcat(mibname, ".enabled"); + siz = 5; + error = sysctlnametomib(mibname, mib, &siz); + free(mibname); + } else { + siz = 3; + error = sysctlnametomib("security.mac", mib, &siz); + } + if (error == -1) { + switch (errno) { + case ENOTDIR: + case ENOENT: + return (0); + default: + return (error); + } + } + return (1); +} diff --git a/lib/libc/posix1e/mac.conf.5 b/lib/libc/posix1e/mac.conf.5 new file mode 100644 index 0000000..a8dfba2 --- /dev/null +++ b/lib/libc/posix1e/mac.conf.5 @@ -0,0 +1,123 @@ +.\" Copyright (c) 2003 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project in part by Network +.\" Associates Laboratories, the Security Research Division of Network +.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), +.\" as part of the DARPA CHATS research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd April 19, 2003 +.Dt MAC.CONF 5 +.Os +.Sh NAME +.Nm mac.conf +.Nd format of the MAC library configuration file +.Sh DESCRIPTION +The +.Nm +file configures the default label elements to be used by policy-agnostic +applications that operate on MAC labels. +A file contains a series of default label sets specified by object class, +in addition to blank lines and comments preceded by a +.Ql # +symbol. +.Pp +Currently, the implementation supports two syntax styles for label +element declaration. +The old (deprecated) syntax consists of a +single line with two fields separated by white space: the object +class name, and a list of label elements as used by the +.Xr mac_prepare 3 +library calls prior to an application invocation of a function from +.Xr mac_get 3 . +.Pp +The newer more preferred syntax consists of three fields separated by +white space: the label group, object class name and a list of +label elements. +.Pp +Label element names may optionally begin with a +.Ql \&? +symbol to indicate that a failure to retrieve the label element for +an object should be silently ignored, and improves usability if the +set of MAC policies may change over time. +.Sh FILES +.Bl -tag -width ".Pa /etc/mac.conf" -compact +.It Pa /etc/mac.conf +MAC library configuration file. +.El +.Sh EXAMPLES +The following example configures user applications to operate with +four MAC policies: +.Xr mac_biba 4 , +.Xr mac_mls 4 , +SEBSD, +and +.Xr mac_partition 4 . +.Bd -literal -offset indent +# +# Default label set to be used by simple MAC applications + +default_labels file ?biba,?lomac,?mls,?sebsd +default_labels ifnet ?biba,?lomac,?mls,?sebsd +default_labels process ?biba,?lomac,?mls,?partition,?sebsd +default_labels socket ?biba,?lomac,?mls + +# +# Deprecated (old) syntax + +default_file_labels ?biba,?mls,?sebsd +default_ifnet_labels ?biba,?mls,?sebsd +default_process_labels ?biba,?mls,partition,?sebsd +.Ed +.Pp +In this example, userland applications will attempt to retrieve Biba, +MLS, and SEBSD labels for all object classes; for processes, they will +additionally attempt to retrieve a Partition identifier. +In all cases except the Partition identifier, failure to retrieve a +label due to the respective policy not being present will be ignored. +.Sh SEE ALSO +.Xr mac 3 , +.Xr mac_get 3 , +.Xr mac_prepare 3 , +.Xr mac 4 , +.Xr mac 9 +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. +.Sh BUGS +The +.Tn TrustedBSD +MAC Framework and associated policies, interfaces, and +applications are considered to be an experimental feature in +.Fx . +Sites considering production deployment should keep the experimental +status of these services in mind during any deployment process. +See also +.Xr mac 9 +for related considerations regarding the kernel framework. diff --git a/lib/libc/posix1e/mac_exec.c b/lib/libc/posix1e/mac_exec.c new file mode 100644 index 0000000..fb3f994 --- /dev/null +++ b/lib/libc/posix1e/mac_exec.c @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2002 Networks Associates Technology, Inc. + * All rights reserved. + * + * This software was developed for the FreeBSD Project in part by Network + * Associates Laboratories, the Security Research Division of Network + * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), + * as part of the DARPA CHATS research program. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/mac.h> + +extern int __mac_execve(char *fname, char **argv, char **envv, + struct mac *mac_p); + +int +mac_execve(char *fname, char **argv, char **envv, struct mac *label) +{ + + return (__mac_execve(fname, argv, envv, label)); +} diff --git a/lib/libc/posix1e/mac_free.3 b/lib/libc/posix1e/mac_free.3 new file mode 100644 index 0000000..33ef9ec --- /dev/null +++ b/lib/libc/posix1e/mac_free.3 @@ -0,0 +1,98 @@ +.\" Copyright (c) 2001, 2002 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and NAI Labs, the Security +.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR +.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS +.\" research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. The name of the author may not be used to endorse or promote +.\" products derived from this software without specific prior written +.\" permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 21, 2001 +.Dt MAC_FREE 3 +.Os +.Sh NAME +.Nm mac_free +.Nd free MAC label +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/mac.h +.Ft int +.Fn mac_free "mac_t label" +.Sh DESCRIPTION +The +.Fn mac_free +function frees the storage allocated to contain a +.Vt mac_t . +.Sh RETURN VALUES +The +.Fn mac_free +function always returns 0. +WARNING: see the notes in the +.Sx BUGS +section regarding the use of this +function. +.Sh SEE ALSO +.Xr mac 3 , +.Xr mac_get 3 , +.Xr mac_prepare 3 , +.Xr mac_set 3 , +.Xr mac_text 3 , +.Xr mac 4 , +.Xr mac 9 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft +continues on the cross-platform POSIX.1e implementation mailing list. +To join this list, see the +.Fx +POSIX.1e implementation page +for more information. +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. +.Sh BUGS +POSIX.1e specifies that +.Fn mac_free +will be used to free text strings created using +.Xr mac_to_text 3 . +Because +.Vt mac_t +is a complex structure in the +.Tn TrustedBSD +implementation, +.Fn mac_free +is specific to that type, and must not be used to free the character +strings returned from +.Fn mac_to_text . +Doing so may result in undefined behavior, +including application failure. diff --git a/lib/libc/posix1e/mac_get.3 b/lib/libc/posix1e/mac_get.3 new file mode 100644 index 0000000..cd498d0 --- /dev/null +++ b/lib/libc/posix1e/mac_get.3 @@ -0,0 +1,151 @@ +.\" Copyright (c) 2001, 2004 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and NAI Labs, the Security +.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR +.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS +.\" research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 21, 2001 +.Dt MAC_GET 3 +.Os +.Sh NAME +.Nm mac_get_file , +.Nm mac_get_link , +.Nm mac_get_fd , +.Nm mac_get_peer , +.Nm mac_get_pid , +.Nm mac_get_proc +.Nd get the label of a file, socket, socket peer or process +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/mac.h +.Ft int +.Fn mac_get_file "const char *path" "mac_t label" +.Ft int +.Fn mac_get_link "const char *path" "mac_t label" +.Ft int +.Fn mac_get_fd "int fd" "mac_t label" +.Ft int +.Fn mac_get_peer "int fd" "mac_t label" +.Ft int +.Fn mac_get_pid "pid_t pid" "mac_t label" +.Ft int +.Fn mac_get_proc "mac_t label" +.Sh DESCRIPTION +The +.Fn mac_get_file +system call returns the label associated with a file specified by +pathname. +The +.Fn mac_get_link +function is the same as +.Fn mac_get_file , +except that it does not follow symlinks. +.Pp +The +.Fn mac_get_fd +system call returns the label associated with an object referenced by +the specified file descriptor. +Note that in the case of a file system socket, the label returned will +be the socket label, which may be different from the label of the +on-disk node acting as a rendezvous for the socket. +The +.Fn mac_get_peer +system call returns the label associated with the remote endpoint of +a socket; the exact semantics of this call will depend on the protocol +domain, communications type, and endpoint; typically this label will +be cached when a connection-oriented protocol instance is first set up, +and is undefined for datagram protocols. +.Pp +The +.Fn mac_get_pid +and +.Fn mac_get_proc +system calls return the process label associated with an arbitrary +process ID, or the current process. +.Pp +Label storage for use with these calls must first be allocated and +prepared using the +.Xr mac_prepare 3 +functions. +When an application is done using a label, the memory may be returned +using +.Xr mac_free 3 . +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EACCES +A component of +.Fa path +is not searchable, +or MAC read access to the file +is denied. +.It Bq Er EINVAL +The requested label operation is not valid for the object referenced by +.Fa fd . +.It Bq Er ENAMETOOLONG +The pathname pointed to by +.Fa path +exceeds +.Dv PATH_MAX , +or a component of the pathname exceeds +.Dv NAME_MAX . +.It Bq Er ENOENT +A component of +.Fa path +does not exist. +.It Bq Er ENOMEM +Insufficient memory is available +to allocate a new MAC label structure. +.It Bq Er ENOTDIR +A component of +.Fa path +is not a directory. +.El +.Sh SEE ALSO +.Xr mac 3 , +.Xr mac_free 3 , +.Xr mac_prepare 3 , +.Xr mac_set 3 , +.Xr mac_text 3 , +.Xr mac 4 , +.Xr mac 9 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft +continues on the cross-platform POSIX.1e implementation mailing list. +To join this list, see the +.Fx +POSIX.1e implementation page +for more information. +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. diff --git a/lib/libc/posix1e/mac_get.c b/lib/libc/posix1e/mac_get.c new file mode 100644 index 0000000..1913f5d --- /dev/null +++ b/lib/libc/posix1e/mac_get.c @@ -0,0 +1,86 @@ +/* + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/mac.h> +#include <sys/socket.h> + +extern int __mac_get_fd(int fd, struct mac *mac_p); +extern int __mac_get_file(const char *path_p, struct mac *mac_p); +extern int __mac_get_link(const char *path_p, struct mac *mac_p); +extern int __mac_get_pid(pid_t pid, struct mac *mac_p); +extern int __mac_get_proc(struct mac *mac_p); + +int +mac_get_fd(int fd, struct mac *label) +{ + + return (__mac_get_fd(fd, label)); +} + +int +mac_get_file(const char *path, struct mac *label) +{ + + return (__mac_get_file(path, label)); +} + +int +mac_get_link(const char *path, struct mac *label) +{ + + return (__mac_get_link(path, label)); +} + +int +mac_get_peer(int fd, struct mac *label) +{ + socklen_t len; + + len = sizeof(*label); + return (getsockopt(fd, SOL_SOCKET, SO_PEERLABEL, label, &len)); +} + +int +mac_get_pid(pid_t pid, struct mac *label) +{ + + return (__mac_get_pid(pid, label)); +} + +int +mac_get_proc(struct mac *label) +{ + + return (__mac_get_proc(label)); +} diff --git a/lib/libc/posix1e/mac_is_present.3 b/lib/libc/posix1e/mac_is_present.3 new file mode 100644 index 0000000..96d8cbf --- /dev/null +++ b/lib/libc/posix1e/mac_is_present.3 @@ -0,0 +1,87 @@ +.\" Copyright (c) 2002 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and NAI Labs, the Security +.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR +.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS +.\" research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd July 7, 2006 +.Dt MAC_IS_PRESENT 3 +.Os +.Sh NAME +.Nm mac_is_present +.Nd report whether the running system has MAC support +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/mac.h +.Ft int +.Fn mac_is_present "const char *policyname" +.Sh DESCRIPTION +The +.Fn mac_is_present +function determines whether the currently-running kernel supports MAC for +a given policy or not. +If +.Fa policyname +is +.Pf non- Dv NULL , +the presence of the named policy +(e.g.\& +.Dq Li biba , +.Dq Li mls , +.Dq Li te ) +is checked, otherwise the presence of any MAC policies at all is checked. +.Sh RETURN VALUES +If the system supports the given MAC policy, the value 1 is returned. +If the specified MAC policy is not supported, the value 0 is returned. +If an error occurs, the value \-1 is returned. +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EINVAL +The value of +.Fa policyname +is not valid. +.It Bq Er ENOMEM +Insufficient memory was available to allocate internal storage. +.El +.Sh SEE ALSO +.Xr mac 3 , +.Xr mac_free 3 , +.Xr mac_get 3 , +.Xr mac_prepare 3 , +.Xr mac_set 3 , +.Xr mac_text 3 , +.Xr mac 4 , +.Xr mac 9 +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. diff --git a/lib/libc/posix1e/mac_prepare.3 b/lib/libc/posix1e/mac_prepare.3 new file mode 100644 index 0000000..1d85229 --- /dev/null +++ b/lib/libc/posix1e/mac_prepare.3 @@ -0,0 +1,126 @@ +.\" Copyright (c) 2002, 2003 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and Network Associates Labs, +.\" the Security Research Division of Network Associates, Inc. under +.\" DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the +.\" DARPA CHATS research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd August 22, 2003 +.Os +.Dt MAC_PREPARE 3 +.Sh NAME +.Nm mac_prepare , mac_prepare_type , mac_prepare_file_label , +.Nm mac_prepare_ifnet_label , mac_prepare_process_label +.Nd allocate appropriate storage for +.Vt mac_t +.Sh SYNOPSIS +.In sys/mac.h +.Ft int +.Fn mac_prepare "mac_t *mac" "const char *elements" +.Ft int +.Fn mac_prepare_type "mac_t *mac" "const char *name" +.Ft int +.Fn mac_prepare_file_label "mac_t *mac" +.Ft int +.Fn mac_prepare_ifnet_label "mac_t *mac" +.Ft int +.Fn mac_prepare_process_label "mac_t *mac" +.Sh DESCRIPTION +The +.Nm +family of functions allocates the appropriate amount of storage and initializes +.Fa *mac +for use by +.Xr mac_get 3 . +When the resulting label is passed into the +.Xr mac_get 3 +functions, the kernel will attempt to fill in the label elements specified +when the label was prepared. +Elements are specified in a nul-terminated string, using commas to +delimit fields. +Element names may be prefixed with the +.Dv ? +character to indicate that a failure by the kernel to retrieve that +element should not be considered fatal. +.Pp +The +.Fn mac_prepare +function accepts a list of policy names as a parameter, and allocates the +storage to fit those label elements accordingly. +The remaining functions in the family make use of system defaults defined +in +.Xr mac.conf 5 +instead of an explicit +.Va elements +argument, deriving the default from the specified object type. +.Pp +.Fn mac_prepare_type +allocates the storage to fit an object label of the type specified by +the +.Va name +argument. +The +.Fn mac_prepare_file_label , +.Fn mac_prepare_ifnet_label , +and +.Fn mac_prepare_process_label +functions are equivalent to invocations of +.Fn mac_prepare_type +with arguments of +.Qq file , +.Qq ifnet , +and +.Qq process +respectively. +.Sh RETURN VALUES +.Rv -std +.Sh SEE ALSO +.Xr mac 3 , +.Xr mac_free 3 , +.Xr mac_get 3 , +.Xr mac_is_present 3 , +.Xr mac_set 3 , +.Xr mac 4 , +.Xr mac.conf 5 , +.Xr maclabel 7 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft +continues on the cross-platform POSIX.1e implementation mailing list. +To join this list, see the +.Fx +POSIX.1e implementation page +for more information. +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. +Support for generic object types first appeared in +.Fx 5.2 . diff --git a/lib/libc/posix1e/mac_set.3 b/lib/libc/posix1e/mac_set.3 new file mode 100644 index 0000000..84a1800 --- /dev/null +++ b/lib/libc/posix1e/mac_set.3 @@ -0,0 +1,148 @@ +.\" Copyright (c) 2001 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and NAI Labs, the Security +.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR +.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS +.\" research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 14, 2003 +.Dt MAC_SET 3 +.Os +.Sh NAME +.Nm mac_set_file , +.Nm mac_set_fd , +.Nm mac_set_proc +.Nd set the MAC label for a file or process +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/mac.h +.Ft int +.Fn mac_set_file "const char *path" "mac_t label" +.Ft int +.Fn mac_set_link "const char *path" "mac_t label" +.Ft int +.Fn mac_set_fd "int fd" "mac_t label" +.Ft int +.Fn mac_set_proc "mac_t label" +.Sh DESCRIPTION +The +.Fn mac_set_file +and +.Fn mac_set_fd +functions associate a MAC label +specified by +.Fa label +to the file referenced to by +.Fa path_p , +or to the file descriptor +.Fa fd , +respectively. +Note that when a file descriptor references a socket, label operations +on the file descriptor act on the socket, not on the file that may +have been used as a rendezvous when binding the socket. +The +.Fn mac_set_link +function is the same as +.Fn mac_set_file , +except that it does not follow symlinks. +.Pp +The +.Fn mac_set_proc +function associates the MAC label +specified by +.Fa label +to the calling process. +.Pp +A process is allowed to set a label for a file +only if it has MAC write access to the file, +and its effective user ID is equal to +the owner of the file, +or has appropriate privileges. +.Sh RETURN VALUES +.Rv -std mac_set_fd mac_set_file mac_set_link mac_set_proc +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er EACCES +MAC write access to the file is denied. +.It Bq Er EBADF +The +.Fa fd +argument +is not a valid file descriptor. +.It Bq Er EINVAL +The +.Fa label +argument +is not a valid MAC label, or the object referenced by +.Fa fd +is not appropriate for label operations. +.It Bq Er EOPNOTSUPP +Setting MAC labels is not supported +by the file referenced by +.Fa fd . +.It Bq Er EPERM +The calling process had insufficient privilege +to change the MAC label. +.It Bq Er EROFS +File system for the object being modified +is read only. +.It Bq Er ENAMETOOLONG +.\" XXX POSIX_NO_TRUNC? +The length of the pathname in +.Fa path_p +exceeds +.Dv PATH_MAX , +or a component of the pathname +is longer than +.Dv NAME_MAX . +.It Bq Er ENOENT +The file referenced by +.Fa path_p +does not exist. +.It Bq Er ENOTDIR +A component of the pathname +referenced by +.Fa path_p +is not a directory. +.El +.Sh SEE ALSO +.Xr mac 3 , +.Xr mac_free 3 , +.Xr mac_get 3 , +.Xr mac_is_present 3 , +.Xr mac_prepare 3 , +.Xr mac_text 3 , +.Xr mac 4 , +.Xr mac 9 +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. diff --git a/lib/libc/posix1e/mac_set.c b/lib/libc/posix1e/mac_set.c new file mode 100644 index 0000000..4353ee6 --- /dev/null +++ b/lib/libc/posix1e/mac_set.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by Robert Watson for the TrustedBSD Project. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the authors may not be used to endorse or promote + * products derived from this software without specific prior written + * permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + */ + +#include <sys/types.h> +#include <sys/mac.h> + +extern int __mac_set_fd(int fd, struct mac *mac_p); +extern int __mac_set_file(const char *path_p, struct mac *mac_p); +extern int __mac_set_link(const char *path_p, struct mac *mac_p); +extern int __mac_set_proc(struct mac *mac_p); + +int +mac_set_fd(int fd, struct mac *label) +{ + + return (__mac_set_fd(fd, label)); +} + +int +mac_set_file(const char *path, struct mac *label) +{ + + return (__mac_set_file(path, label)); +} + +int +mac_set_link(const char *path, struct mac *label) +{ + + return (__mac_set_link(path, label)); +} + +int +mac_set_proc(struct mac *label) +{ + + return (__mac_set_proc(label)); +} diff --git a/lib/libc/posix1e/mac_text.3 b/lib/libc/posix1e/mac_text.3 new file mode 100644 index 0000000..66c1e21 --- /dev/null +++ b/lib/libc/posix1e/mac_text.3 @@ -0,0 +1,116 @@ +.\" Copyright (c) 2001 Networks Associates Technology, Inc. +.\" All rights reserved. +.\" +.\" This software was developed for the FreeBSD Project by Chris +.\" Costello at Safeport Network Services and NAI Labs, the Security +.\" Research Division of Network Associates, Inc. under DARPA/SPAWAR +.\" contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS +.\" research program. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd December 21, 2001 +.Dt MAC_TEXT 3 +.Os +.Sh NAME +.Nm mac_from_text , +.Nm mac_to_text +.Nd convert MAC label to/from text representation +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/mac.h +.Ft int +.Fn mac_from_text "mac_t *mac" "const char *text" +.Ft int +.Fn mac_to_text "mac_t label" "char **text" +.Sh DESCRIPTION +The +.Fn mac_from_text +function converts the text representation of a label +into the internal policy label format +.Pq Vt mac_t +and places it in +.Fa *mac , +which must later be freed with +.Xr free 3 . +.Pp +The +.Fn mac_to_text +function allocates storage for +.Fa *text , +which will be set to the text representation of +.Fa label . +.Pp +Refer to +.Xr maclabel 7 +for the MAC label format. +.Sh RETURN VALUES +.Rv -std mac_from_text mac_to_text +.Sh COMPATIBILITY +POSIX.1e does not define +a format for text representations +of MAC labels. +.Pp +POSIX.1e requires that text strings allocated using +.Fn mac_to_text +be freed using +.Xr mac_free 3 ; +in the +.Fx +implementation, they must be freed using +.Xr free 3 , +as +.Xr mac_free 3 +is used only to free memory used for type +.Vt mac_t . +.Sh ERRORS +.Bl -tag -width Er +.It Bq Er ENOMEM +Insufficient memory was available +to allocate internal storage. +.El +.Sh SEE ALSO +.Xr free 3 , +.Xr mac 3 , +.Xr mac_get 3 , +.Xr mac_is_present 3 , +.Xr mac_prepare 3 , +.Xr mac_set 3 , +.Xr mac 4 , +.Xr maclabel 7 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft +continues on the cross-platform POSIX.1e implementation mailing list. +To join this list, see the +.Fx +POSIX.1e implementation page +for more information. +.Sh HISTORY +Support for Mandatory Access Control was introduced in +.Fx 5.0 +as part of the +.Tn TrustedBSD +Project. diff --git a/lib/libc/posix1e/posix1e.3 b/lib/libc/posix1e/posix1e.3 new file mode 100644 index 0000000..6333b08 --- /dev/null +++ b/lib/libc/posix1e/posix1e.3 @@ -0,0 +1,134 @@ +.\"- +.\" Copyright (c) 2000 Robert N. M. Watson +.\" All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" $FreeBSD$ +.\" +.Dd January 17, 2000 +.Dt POSIX1E 3 +.Os +.Sh NAME +.Nm posix1e +.Nd introduction to the POSIX.1e security API +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In sys/types.h +.In sys/acl.h +.\" .In sys/audit.h +.\" .In sys/capability.h +.In sys/mac.h +.Sh DESCRIPTION +The IEEE POSIX.1e specification never left draft form, but the interfaces +it describes are now widely used despite inherent limitations. +Currently, only a few of the interfaces and features are implemented in +.Fx , +although efforts are underway to complete the integration at this time. +.Pp +POSIX.1e describes five security extensions to the base POSIX.1 API: +Access Control Lists (ACLs), Auditing, Capabilities, Mandatory Access +Control, and Information Flow Labels. +.Fx +supports POSIX.1e ACL interfaces, as well as POSIX.1e-like MAC +interfaces. +The TrustedBSD Project has produced but not integrated an implementation +of POSIX.1e Capabilities. +.Pp +POSIX.1e defines both syntax and semantics for these features, but fairly +substantial changes are required to implement these features in the +operating system. +.Pp +As shipped, +.Fx 4.0 +provides API and VFS support for ACLs, but not an implementation on any +native file system. +.Fx 5.0 +includes support for ACLs as part of UFS1 and UFS2, as well as necessary +VFS support for additional file systems to export ACLs as appropriate. +Available API calls relating to ACLs are described in detail in +.Xr acl 3 . +.Pp +As shipped, +.Fx 5.0 +includes support for Mandatory Access Control as well as POSIX.1e-like +APIs for label management. +More information on API calls relating to MAC is available in +.Xr mac 3 . +.Pp +Additional patches supporting POSIX.1e features are provided by the +TrustedBSD project: +.Pp +http://www.TrustedBSD.org/ +.Sh IMPLEMENTATION NOTES +.Fx Ns 's +support for POSIX.1e interfaces and features is still under +development at this time, and many of these features are considered new +or experimental. +.Sh ENVIRONMENT +POSIX.1e assigns security labels to all objects, extending the security +functionality described in POSIX.1. +These additional labels provide +fine-grained discretionary access control, fine-grained capabilities, +and labels necessary for mandatory access control. +POSIX.2c describes +a set of userland utilities for manipulating these labels. +.Pp +Many of these services are supported by extended attributes, documented +in +.Xr extattr 2 +and +.Xr extattr 9 . +While these APIs are not documented in POSIX.1e, they are similar in +structure. +.Sh SEE ALSO +.Xr extattr 2 , +.Xr acl 3 , +.Xr mac 3 , +.Xr acl 9 , +.Xr extattr 9 , +.Xr mac 9 +.Sh STANDARDS +POSIX.1e is described in IEEE POSIX.1e draft 17. +Discussion of the draft continues +on the cross-platform POSIX.1e implementation +mailing list. +To join this list, see the +.Fx +POSIX.1e implementation +page for more information. +.Sh HISTORY +POSIX.1e support was introduced in +.Fx 4.0 ; +most of the features are available as of +.Fx 5.0 . +Development continues. +.Sh AUTHORS +.An Robert N M Watson +.An Chris D. Faulhaber +.An Thomas Moestl +.An Ilmar S Habibulin +.Sh BUGS +Many of these features are considered new or experimental in +.Fx 5.0 +and should be deployed with appropriate caution. |
