193 lines
4.2 KiB
C
193 lines
4.2 KiB
C
/*-
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* Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* acl_get_file - syscall wrapper for retrieving ACL by filename
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* acl_get_fd - syscall wrapper for retrieving access ACL by fd
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* acl_get_fd_np - syscall wrapper for retrieving ACL by fd (non-POSIX)
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* acl_get_perm_np() checks if a permission is in the specified
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* permset (non-POSIX)
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* acl_get_permset() returns the permission set in the ACL entry
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* acl_get_qualifier() retrieves the qualifier of the tag from the ACL entry
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* acl_get_tag_type() returns the tag type for the ACL entry entry_d
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include "namespace.h"
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#include <sys/acl.h>
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#include "un-namespace.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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acl_t
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acl_get_file(const char *path_p, acl_type_t type)
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{
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acl_t aclp;
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int error;
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aclp = acl_init(ACL_MAX_ENTRIES);
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if (aclp == NULL)
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return (NULL);
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error = __acl_get_file(path_p, type, &aclp->ats_acl);
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if (error) {
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acl_free(aclp);
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return (NULL);
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}
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return (aclp);
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}
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acl_t
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acl_get_fd(int fd)
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{
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acl_t aclp;
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int error;
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aclp = acl_init(ACL_MAX_ENTRIES);
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if (aclp == NULL)
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return (NULL);
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error = ___acl_get_fd(fd, ACL_TYPE_ACCESS, &aclp->ats_acl);
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if (error) {
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acl_free(aclp);
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return (NULL);
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}
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return (aclp);
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}
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acl_t
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acl_get_fd_np(int fd, acl_type_t type)
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{
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acl_t aclp;
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int error;
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aclp = acl_init(ACL_MAX_ENTRIES);
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if (aclp == NULL)
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return (NULL);
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error = ___acl_get_fd(fd, type, &aclp->ats_acl);
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if (error) {
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acl_free(aclp);
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return (NULL);
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}
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return (aclp);
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}
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int
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acl_get_perm_np(acl_permset_t permset_d, acl_perm_t perm)
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{
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if (permset_d == NULL) {
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errno = EINVAL;
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return (-1);
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}
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switch(perm) {
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case ACL_READ:
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case ACL_WRITE:
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case ACL_EXECUTE:
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if (*permset_d & perm)
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return (1);
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break;
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default:
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errno = EINVAL;
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return (-1);
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}
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return (0);
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}
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/*
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* acl_get_permset() (23.4.17): return via permset_p a descriptor to
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* the permission set in the ACL entry entry_d.
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*/
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int
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acl_get_permset(acl_entry_t entry_d, acl_permset_t *permset_p)
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{
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if (entry_d == NULL || permset_p == NULL) {
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errno = EINVAL;
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return (-1);
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}
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*permset_p = &entry_d->ae_perm;
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return (0);
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}
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/*
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* acl_get_qualifier() (23.4.18): retrieve the qualifier of the tag
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* for the ACL entry entry_d.
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*/
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void *
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acl_get_qualifier(acl_entry_t entry_d)
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{
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uid_t *retval;
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if (entry_d == NULL) {
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errno = EINVAL;
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return (NULL);
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}
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switch(entry_d->ae_tag) {
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case ACL_USER:
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case ACL_GROUP:
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retval = malloc(sizeof(uid_t));
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if (retval == NULL)
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return (NULL);
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*retval = entry_d->ae_id;
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return (retval);
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}
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errno = EINVAL;
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return (NULL);
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}
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/*
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* acl_get_tag_type() (23.4.19): return the tag type for the ACL
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* entry entry_p.
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*/
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int
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acl_get_tag_type(acl_entry_t entry_d, acl_tag_t *tag_type_p)
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{
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if (entry_d == NULL || tag_type_p == NULL) {
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errno = EINVAL;
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return (-1);
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}
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*tag_type_p = entry_d->ae_tag;
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return (0);
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}
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