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https://github.com/samba-team/samba.git
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3c98d5bd98
This is an orthogonality measure to make clear this pointer now belongs to the cache. (cherry picked from commit e6080c6e87d6fe3995b121a772bf3f6343fa666f)
88 lines
2.1 KiB
C
88 lines
2.1 KiB
C
/*
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Unix SMB/CIFS implementation.
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Safe versions of getpw* calls
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Copyright (C) Andrew Bartlett 2002
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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struct passwd *tcopy_passwd(TALLOC_CTX *mem_ctx, const struct passwd *from)
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{
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struct passwd *ret = TALLOC_P(mem_ctx, struct passwd);
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if (!ret) {
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return NULL;
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}
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ret->pw_name = talloc_strdup(ret, from->pw_name);
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ret->pw_passwd = talloc_strdup(ret, from->pw_passwd);
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ret->pw_uid = from->pw_uid;
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ret->pw_gid = from->pw_gid;
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ret->pw_gecos = talloc_strdup(ret, from->pw_gecos);
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ret->pw_dir = talloc_strdup(ret, from->pw_dir);
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ret->pw_shell = talloc_strdup(ret, from->pw_shell);
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return ret;
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}
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void flush_pwnam_cache(void)
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{
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memcache_flush(NULL, GETPWNAM_CACHE);
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}
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struct passwd *getpwnam_alloc(TALLOC_CTX *mem_ctx, const char *name)
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{
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struct passwd *pw, *for_cache;
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pw = (struct passwd *)memcache_lookup_talloc(
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NULL, GETPWNAM_CACHE, data_blob_string_const_null(name));
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if (pw != NULL) {
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return tcopy_passwd(mem_ctx, pw);
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}
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pw = sys_getpwnam(name);
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if (pw == NULL) {
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return NULL;
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}
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for_cache = tcopy_passwd(talloc_autofree_context(), pw);
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if (for_cache == NULL) {
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return NULL;
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}
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memcache_add_talloc(NULL, GETPWNAM_CACHE,
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data_blob_string_const_null(name), &for_cache);
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return tcopy_passwd(mem_ctx, pw);
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}
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struct passwd *getpwuid_alloc(TALLOC_CTX *mem_ctx, uid_t uid)
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{
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struct passwd *temp;
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temp = sys_getpwuid(uid);
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if (!temp) {
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#if 0
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if (errno == ENOMEM) {
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/* what now? */
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}
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#endif
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return NULL;
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}
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return tcopy_passwd(mem_ctx, temp);
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}
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