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xfs: define a flags field for the AG geometry ioctl structure

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Define a flags field for the AG geometry ioctl structure.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
2019-08-30 16:30:22 -07:00
parent eb77b23b56
commit 76f1793359
2 changed files with 5 additions and 1 deletions
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2
fs/xfs/libxfs/xfs_fs.h
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@@ -287,7 +287,7 @@ struct xfs_ag_geometry {
uint32_t ag_ifree; /* o: inodes free */ uint32_t ag_ifree; /* o: inodes free */
uint32_t ag_sick; /* o: sick things in ag */ uint32_t ag_sick; /* o: sick things in ag */
uint32_t ag_checked; /* o: checked metadata in ag */ uint32_t ag_checked; /* o: checked metadata in ag */
uint32_t ag_reserved32; /* o: zero */ uint32_t ag_flags; /* i/o: flags for this ag */
uint64_t ag_reserved[12];/* o: zero */ uint64_t ag_reserved[12];/* o: zero */
}; };
#define XFS_AG_GEOM_SICK_SB (1 << 0) /* superblock */ #define XFS_AG_GEOM_SICK_SB (1 << 0) /* superblock */

4
fs/xfs/xfs_ioctl.c
View File

@@ -1038,6 +1038,10 @@ xfs_ioc_ag_geometry(
if (copy_from_user(&ageo, arg, sizeof(ageo))) if (copy_from_user(&ageo, arg, sizeof(ageo)))
return -EFAULT; return -EFAULT;
if (ageo.ag_flags)
return -EINVAL;
if (memchr_inv(&ageo.ag_reserved, 0, sizeof(ageo.ag_reserved)))
return -EINVAL;
error = xfs_ag_get_geometry(mp, ageo.ag_number, &ageo); error = xfs_ag_get_geometry(mp, ageo.ag_number, &ageo);
if (error) if (error)