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xfs: add a define for statfs magic to uapi

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Needed by userspace programs that call fstatfs().

It'd be natural to publish XFS_SB_MAGIC in uapi, but while these two
have identical values, they have different semantic meaning: one is
an enum cookie meant for statfs, the other a signature of the
on-disk format.

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Adam Borowski
2018-10-18 17:20:19 +11:00
committed by Dave Chinner
parent 4831822ff1
commit dddde68b8f
2 changed files with 4 additions and 2 deletions
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include/uapi/linux/magic.h
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@@ -29,6 +29,7 @@
#define HPFS_SUPER_MAGIC 0xf995e849
#define ISOFS_SUPER_MAGIC 0x9660
#define JFFS2_SUPER_MAGIC 0x72b6
#define XFS_SUPER_MAGIC 0x58465342 /* "XFSB" */
#define PSTOREFS_MAGIC 0x6165676C
#define EFIVARFS_MAGIC 0xde5e81e4
#define HOSTFS_SUPER_MAGIC 0x00c0ffee