![Zbigniew Jędrzejewski-Szmek](/assets/img/avatar_default.png)
When we are attempting to create directory somewhere in the bowels of /var/lib and get an error that it already exists, it can be quite hard to diagnose what is wrong (especially for a user who is not aware that the directory must have the specified owner, and permissions not looser than what was requested). Let's print a warning in most cases. A warning is appropriate, because such state is usually a sign of borked installation and needs to be resolved by the adminstrator. $ build/test-fs-util Path "/tmp/test-readlink_and_make_absolute" already exists and is not a directory, refusing. (or) Directory "/tmp/test-readlink_and_make_absolute" already exists, but has mode 0775 that is too permissive (0755 was requested), refusing. (or) Directory "/tmp/test-readlink_and_make_absolute" already exists, but is owned by 1001:1000 (1000:1000 was requested), refusing. Assertion 'mkdir_safe(tempdir, 0755, getuid(), getgid(), MKDIR_WARN_MODE) >= 0' failed at ../src/test/test-fs-util.c:320, function test_readlink_and_make_absolute(). Aborting. No functional change except for the new log lines.
46 lines
1.8 KiB
C
46 lines
1.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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Copyright 2013 Kay Sievers
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/types.h>
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typedef enum MkdirFlags {
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MKDIR_FOLLOW_SYMLINK = 1 << 0,
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MKDIR_WARN_MODE = 1 << 1,
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} MkdirFlags;
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int mkdir_errno_wrapper(const char *pathname, mode_t mode);
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int mkdir_safe(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags);
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int mkdir_parents(const char *path, mode_t mode);
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int mkdir_p(const char *path, mode_t mode);
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/* mandatory access control(MAC) versions */
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int mkdir_safe_label(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags);
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int mkdir_parents_label(const char *path, mode_t mode);
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int mkdir_p_label(const char *path, mode_t mode);
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/* internally used */
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typedef int (*mkdir_func_t)(const char *pathname, mode_t mode);
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int mkdir_safe_internal(const char *path, mode_t mode, uid_t uid, gid_t gid, MkdirFlags flags, mkdir_func_t _mkdir);
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int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir);
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int mkdir_p_internal(const char *prefix, const char *path, mode_t mode, mkdir_func_t _mkdir);
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