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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _LINUX_STATFS_H
- #define _LINUX_STATFS_H
- #include <linux/types.h>
- #include <asm/statfs.h>
- #include <asm/byteorder.h>
- struct kstatfs {
- long f_type;
- long f_bsize;
- u64 f_blocks;
- u64 f_bfree;
- u64 f_bavail;
- u64 f_files;
- u64 f_ffree;
- __kernel_fsid_t f_fsid;
- long f_namelen;
- long f_frsize;
- long f_flags;
- long f_spare[4];
- };
- /*
- * Definitions for the flag in f_flag.
- *
- * Generally these flags are equivalent to the MS_ flags used in the mount
- * ABI. The exception is ST_VALID which has the same value as MS_REMOUNT
- * which doesn't make any sense for statfs.
- */
- #define ST_RDONLY 0x0001 /* mount read-only */
- #define ST_NOSUID 0x0002 /* ignore suid and sgid bits */
- #define ST_NODEV 0x0004 /* disallow access to device special files */
- #define ST_NOEXEC 0x0008 /* disallow program execution */
- #define ST_SYNCHRONOUS 0x0010 /* writes are synced at once */
- #define ST_VALID 0x0020 /* f_flags support is implemented */
- #define ST_MANDLOCK 0x0040 /* allow mandatory locks on an FS */
- /* 0x0080 used for ST_WRITE in glibc */
- /* 0x0100 used for ST_APPEND in glibc */
- /* 0x0200 used for ST_IMMUTABLE in glibc */
- #define ST_NOATIME 0x0400 /* do not update access times */
- #define ST_NODIRATIME 0x0800 /* do not update directory access times */
- #define ST_RELATIME 0x1000 /* update atime relative to mtime/ctime */
- #define ST_NOSYMFOLLOW 0x2000 /* do not follow symlinks */
- struct dentry;
- extern int vfs_get_fsid(struct dentry *dentry, __kernel_fsid_t *fsid);
- static inline __kernel_fsid_t u64_to_fsid(u64 v)
- {
- return (__kernel_fsid_t){.val = {(u32)v, (u32)(v>>32)}};
- }
- /* Fold 16 bytes uuid to 64 bit fsid */
- static inline __kernel_fsid_t uuid_to_fsid(__u8 *uuid)
- {
- return u64_to_fsid(le64_to_cpup((void *)uuid) ^
- le64_to_cpup((void *)(uuid + sizeof(u64))));
- }
- #endif
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