mirror of
https://github.com/containers/fuse-overlayfs.git
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68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/* fuse-overlayfs: Overlay Filesystem in Userspace
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Copyright (C) 2019 Red Hat Inc.
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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 2 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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#ifndef UTILS_H
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#define UTILS_H
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE
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#endif
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#include <config.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "fuse-overlayfs.h"
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#define XATTR_OVERRIDE_STAT "user.fuseoverlayfs.override_stat"
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#define XATTR_PRIVILEGED_OVERRIDE_STAT "security.fuseoverlayfs.override_stat"
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#define XATTR_OVERRIDE_CONTAINERS_STAT "user.containers.override_stat"
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void cleanup_freep (void *p);
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void cleanup_filep (FILE **f);
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void cleanup_closep (void *p);
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void cleanup_dirp (DIR **p);
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int file_exists_at (int dirfd, const char *pathname);
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int strconcat3 (char *dest, size_t size, const char *s1, const char *s2, const char *s3);
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int open_fd_or_get_path (struct ovl_layer *l, const char *path, char *out, int *fd, int flags);
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#define cleanup_file __attribute__ ((cleanup (cleanup_filep)))
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#define cleanup_free __attribute__ ((cleanup (cleanup_freep)))
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#define cleanup_close __attribute__ ((cleanup (cleanup_closep)))
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#define cleanup_dir __attribute__ ((cleanup (cleanup_dirp)))
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#define LIKELY(x) __builtin_expect ((x), 1)
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#define UNLIKELY(x) __builtin_expect ((x), 0)
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#ifdef HAVE_STATX
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void statx_to_stat (struct statx *stx, struct stat *st);
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#endif
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int safe_openat (int dirfd, const char *pathname, int flags, mode_t mode);
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int override_mode (struct ovl_layer *l, int fd, const char *abs_path, const char *path, struct stat *st);
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bool has_prefix (const char *str, const char *pref);
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#endif
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