diff options
Diffstat (limited to 'lib/libc/posix1e/acl_get.c')
| -rw-r--r-- | lib/libc/posix1e/acl_get.c | 215 |
1 files changed, 215 insertions, 0 deletions
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); +} |
