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libacl/acl_equiv_mode.c
70 строк
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Mike Frysinger
licensing: clean up LGPL boilerplate for library code
13 янв 2024, 08:36
13 янв 2024, 08:36
c769e17
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/* File: acl_equiv_mode.c Copyright (C) 1999, 2000 Andreas Gruenbacher, <andreas.gruenbacher@gmail.com> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, see <https://www.gnu.org/licenses/>. */ #include "config.h" #include <stdio.h> #include <errno.h> #include <sys/stat.h> #include "libacl.h" int acl_equiv_mode(acl_t acl, mode_t *mode_p) { acl_obj *acl_obj_p = ext2int(acl, acl); acl_entry_obj *entry_obj_p, *mask_obj_p = NULL; int not_equiv = 0; mode_t mode = 0; if (!acl_obj_p) return -1; FOREACH_ACL_ENTRY(entry_obj_p, acl_obj_p) { switch(entry_obj_p->etag) { case ACL_USER_OBJ: mode |= (entry_obj_p->eperm.sperm & S_IRWXO) << 6; break; case ACL_GROUP_OBJ: mode |= (entry_obj_p->eperm.sperm & S_IRWXO) << 3; break; case ACL_OTHER: mode |= (entry_obj_p->eperm.sperm & S_IRWXO); break; case ACL_MASK: mask_obj_p = entry_obj_p; /* fall through */ case ACL_USER: case ACL_GROUP: not_equiv = 1; break; default: errno = EINVAL; return -1; } } if (mode_p) { if (mask_obj_p) mode = (mode & ~S_IRWXG) | ((mask_obj_p->eperm.sperm & S_IRWXO) << 3); *mode_p = mode; } return not_equiv; }