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statx: add mount ID

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Systemd is hacking around to get it and it's trivial to add to statx, so...

Cc: linux-api@vger.kernel.org
Cc: linux-man@vger.kernel.org
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Miklos Szeredi 2020-05-14 16:44:24 +02:00
parent 761e28fa27
commit fa2fcf4f1d
3 changed files with 10 additions and 1 deletions
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6
include/uapi/linux/stat.h
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@ -123,7 +123,10 @@ struct statx {
__u32 stx_dev_major; /* ID of device containing file [uncond] */
__u32 stx_dev_minor;
/* 0x90 */
__u64 __spare2[14]; /* Spare space for future expansion */
__u64 stx_mnt_id;
__u64 __spare2;
/* 0xa0 */
__u64 __spare3[12]; /* Spare space for future expansion */
/* 0x100 */
};
@ -148,6 +151,7 @@ struct statx {
#define STATX_BLOCKS 0x00000400U /* Want/got stx_blocks */
#define STATX_BASIC_STATS 0x000007ffU /* The stuff in the normal stat struct */
#define STATX_BTIME 0x00000800U /* Want/got stx_btime */
#define STATX_MNT_ID 0x00001000U /* Got stx_mnt_id */
#define STATX__RESERVED 0x80000000U /* Reserved for future struct statx expansion */