47 lines
2 KiB
C
47 lines
2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <linux/fs.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "missing_fs.h"
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/* The chattr() flags to apply when creating a new file *before* writing to it. In particular, flags such as
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* FS_NOCOW_FL don't work if applied a-posteriori. All other flags are fine (or even necessary, think
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* FS_IMMUTABLE_FL!) to apply after writing to the files. */
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#define CHATTR_EARLY_FL \
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(FS_NOATIME_FL | \
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FS_COMPR_FL | \
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FS_NOCOW_FL | \
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FS_NOCOMP_FL | \
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FS_PROJINHERIT_FL)
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#define CHATTR_ALL_FL \
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(FS_NOATIME_FL | \
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FS_SYNC_FL | \
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FS_DIRSYNC_FL | \
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FS_APPEND_FL | \
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FS_COMPR_FL | \
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FS_NODUMP_FL | \
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FS_EXTENT_FL | \
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FS_IMMUTABLE_FL | \
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FS_JOURNAL_DATA_FL | \
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FS_SECRM_FL | \
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FS_UNRM_FL | \
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FS_NOTAIL_FL | \
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FS_TOPDIR_FL | \
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FS_NOCOW_FL | \
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FS_PROJINHERIT_FL)
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int chattr_full(const char *path, int fd, unsigned value, unsigned mask, unsigned *ret_previous, unsigned *ret_final, bool fallback);
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static inline int chattr_fd(int fd, unsigned value, unsigned mask, unsigned *previous) {
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return chattr_full(NULL, fd, value, mask, previous, NULL, false);
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}
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static inline int chattr_path(const char *path, unsigned value, unsigned mask, unsigned *previous) {
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return chattr_full(path, -1, value, mask, previous, NULL, false);
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}
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int read_attr_fd(int fd, unsigned *ret);
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int read_attr_path(const char *p, unsigned *ret);
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