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Diffstat (limited to 'module/spl/spl-cred.c')
| -rw-r--r-- | module/spl/spl-cred.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/module/spl/spl-cred.c b/module/spl/spl-cred.c deleted file mode 100644 index ea3e903f9..000000000 --- a/module/spl/spl-cred.c +++ /dev/null @@ -1,200 +0,0 @@ -/* - * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. - * Copyright (C) 2007 The Regents of the University of California. - * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). - * Written by Brian Behlendorf <[email protected]>. - * UCRL-CODE-235197 - * - * This file is part of the SPL, Solaris Porting Layer. - * For details, see <http://zfsonlinux.org/>. - * - * The SPL is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * The SPL 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 General Public License - * for more details. - * - * You should have received a copy of the GNU General Public License along - * with the SPL. If not, see <http://www.gnu.org/licenses/>. - * - * Solaris Porting Layer (SPL) Credential Implementation. - */ - -#include <sys/cred.h> - -static int -#ifdef HAVE_KUIDGID_T -cr_groups_search(const struct group_info *group_info, kgid_t grp) -#else -cr_groups_search(const struct group_info *group_info, gid_t grp) -#endif -{ - unsigned int left, right, mid; - int cmp; - - if (!group_info) - return (0); - - left = 0; - right = group_info->ngroups; - while (left < right) { - mid = (left + right) / 2; - cmp = KGID_TO_SGID(grp) - - KGID_TO_SGID(GROUP_AT(group_info, mid)); - - if (cmp > 0) - left = mid + 1; - else if (cmp < 0) - right = mid; - else - return (1); - } - return (0); -} - -/* Hold a reference on the credential */ -void -crhold(cred_t *cr) -{ - (void) get_cred((const cred_t *)cr); -} - -/* Free a reference on the credential */ -void -crfree(cred_t *cr) -{ - put_cred((const cred_t *)cr); -} - -/* Return the number of supplemental groups */ -int -crgetngroups(const cred_t *cr) -{ - struct group_info *gi; - int rc; - - gi = cr->group_info; - rc = gi->ngroups; -#ifndef HAVE_GROUP_INFO_GID - /* - * For Linux <= 4.8, - * crgetgroups will only returns gi->blocks[0], which contains only - * the first NGROUPS_PER_BLOCK groups. - */ - if (rc > NGROUPS_PER_BLOCK) { - WARN_ON_ONCE(1); - rc = NGROUPS_PER_BLOCK; - } -#endif - return (rc); -} - -/* - * Return an array of supplemental gids. The returned address is safe - * to use as long as the caller has taken a reference with crhold(). - * - * Linux 4.9 API change, group_info changed from 2d array via ->blocks to 1d - * array via ->gid. - */ -gid_t * -crgetgroups(const cred_t *cr) -{ - struct group_info *gi; - gid_t *gids = NULL; - - gi = cr->group_info; -#ifdef HAVE_GROUP_INFO_GID - gids = KGIDP_TO_SGIDP(gi->gid); -#else - if (gi->nblocks > 0) - gids = KGIDP_TO_SGIDP(gi->blocks[0]); -#endif - return (gids); -} - -/* Check if the passed gid is available in supplied credential. */ -int -groupmember(gid_t gid, const cred_t *cr) -{ - struct group_info *gi; - int rc; - - gi = cr->group_info; - rc = cr_groups_search(gi, SGID_TO_KGID(gid)); - - return (rc); -} - -/* Return the effective user id */ -uid_t -crgetuid(const cred_t *cr) -{ - return (KUID_TO_SUID(cr->euid)); -} - -/* Return the real user id */ -uid_t -crgetruid(const cred_t *cr) -{ - return (KUID_TO_SUID(cr->uid)); -} - -/* Return the saved user id */ -uid_t -crgetsuid(const cred_t *cr) -{ - return (KUID_TO_SUID(cr->suid)); -} - -/* Return the filesystem user id */ -uid_t -crgetfsuid(const cred_t *cr) -{ - return (KUID_TO_SUID(cr->fsuid)); -} - -/* Return the effective group id */ -gid_t -crgetgid(const cred_t *cr) -{ - return (KGID_TO_SGID(cr->egid)); -} - -/* Return the real group id */ -gid_t -crgetrgid(const cred_t *cr) -{ - return (KGID_TO_SGID(cr->gid)); -} - -/* Return the saved group id */ -gid_t -crgetsgid(const cred_t *cr) -{ - return (KGID_TO_SGID(cr->sgid)); -} - -/* Return the filesystem group id */ -gid_t -crgetfsgid(const cred_t *cr) -{ - return (KGID_TO_SGID(cr->fsgid)); -} - -EXPORT_SYMBOL(crhold); -EXPORT_SYMBOL(crfree); -EXPORT_SYMBOL(crgetuid); -EXPORT_SYMBOL(crgetruid); -EXPORT_SYMBOL(crgetsuid); -EXPORT_SYMBOL(crgetfsuid); -EXPORT_SYMBOL(crgetgid); -EXPORT_SYMBOL(crgetrgid); -EXPORT_SYMBOL(crgetsgid); -EXPORT_SYMBOL(crgetfsgid); -EXPORT_SYMBOL(crgetngroups); -EXPORT_SYMBOL(crgetgroups); -EXPORT_SYMBOL(groupmember); |