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Diffstat (limited to 'lib/libc/posix1e/acl_from_text.3')
-rw-r--r-- | lib/libc/posix1e/acl_from_text.3 | 130 |
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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. |