95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* Copyright (c) 2009-2016 Todd C. Miller <Todd.Miller@courtesan.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <config.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#include <unistd.h>
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#include <errno.h>
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#include <pwd.h>
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#include <grp.h>
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#include "sudoers.h"
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/*
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* Create any parent directories needed by path (but not path itself).
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*/
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bool
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sudo_mkdir_parents(char *path, uid_t uid, gid_t *gidp, mode_t mode, bool quiet)
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{
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struct stat sb;
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gid_t parent_gid = 0;
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char *slash = path;
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bool ret = true;
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debug_decl(sudo_mkdir_parents, SUDOERS_DEBUG_UTIL)
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/* If no gid specified, inherit from parent dir. */
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if (*gidp != (gid_t)-1)
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parent_gid = *gidp;
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else if (stat("/", &sb) == 0)
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parent_gid = sb.st_gid;
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/* Create parent directories as needed. */
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while ((slash = strchr(slash + 1, '/')) != NULL) {
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*slash = '\0';
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sudo_debug_printf(SUDO_DEBUG_DEBUG|SUDO_DEBUG_LINENO,
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"mkdir %s, mode 0%o, uid %d, gid %d", path, (unsigned int)mode,
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(int)uid, (int)parent_gid);
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if (mkdir(path, mode) == 0) {
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ignore_result(chown(path, uid, parent_gid));
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} else {
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if (errno != EEXIST) {
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if (!quiet)
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sudo_warn(U_("unable to mkdir %s"), path);
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ret = false;
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break;
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}
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/* Already exists, make sure it is a directory. */
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if (stat(path, &sb) != 0) {
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if (!quiet)
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sudo_warn(U_("unable to stat %s"), path);
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ret = false;
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break;
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}
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if (!S_ISDIR(sb.st_mode)) {
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if (!quiet)
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sudo_warnx(U_("%s exists but is not a directory (0%o)"),
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path, (unsigned int) sb.st_mode);
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ret = false;
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break;
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}
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/* Inherit gid of parent dir for ownership. */
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if (*gidp == (gid_t)-1)
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parent_gid = sb.st_gid;
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}
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*slash = '/';
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}
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/* Return parent gid if none was specified by caller. */
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if (ret && *gidp == (gid_t)-1)
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*gidp = parent_gid;
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debug_return_bool(ret);
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}
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