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author | Darrick J. Wong <darrick.wong@oracle.com> | 2019-07-03 20:36:28 -0700 |
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committer | Darrick J. Wong <darrick.wong@oracle.com> | 2019-07-03 20:36:28 -0700 |
commit | fba9760a433634067ec01e7d4cdd581d17b149e0 (patch) | |
tree | 1021f90d893c9294dc56157d4a876517f09a9d3b | |
parent | 0448b6f488fa66e353a9e00022441cd4aca7f2cf (diff) | |
download | linux-stable-fba9760a433634067ec01e7d4cdd581d17b149e0.tar.gz linux-stable-fba9760a433634067ec01e7d4cdd581d17b149e0.tar.bz2 linux-stable-fba9760a433634067ec01e7d4cdd581d17b149e0.zip |
xfs: wire up the v5 inumbers ioctl
Wire up the v5 INUMBERS ioctl.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
-rw-r--r-- | fs/xfs/libxfs/xfs_fs.h | 8 | ||||
-rw-r--r-- | fs/xfs/xfs_ioctl.c | 52 | ||||
-rw-r--r-- | fs/xfs/xfs_ioctl32.c | 1 | ||||
-rw-r--r-- | fs/xfs/xfs_ondisk.h | 1 |
4 files changed, 62 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h index 960f3542e207..aa4918adc6cf 100644 --- a/fs/xfs/libxfs/xfs_fs.h +++ b/fs/xfs/libxfs/xfs_fs.h @@ -478,6 +478,13 @@ struct xfs_bulkstat_req { #define XFS_BULKSTAT_REQ_SIZE(nr) (sizeof(struct xfs_bulkstat_req) + \ (nr) * sizeof(struct xfs_bulkstat)) +struct xfs_inumbers_req { + struct xfs_bulk_ireq hdr; + struct xfs_inumbers inumbers[]; +}; +#define XFS_INUMBERS_REQ_SIZE(nr) (sizeof(struct xfs_inumbers_req) + \ + (nr) * sizeof(struct xfs_inumbers)) + /* * Error injection. */ @@ -780,6 +787,7 @@ struct xfs_scrub_metadata { #define XFS_IOC_GOINGDOWN _IOR ('X', 125, uint32_t) #define XFS_IOC_FSGEOMETRY _IOR ('X', 126, struct xfs_fsop_geom) #define XFS_IOC_BULKSTAT _IOR ('X', 127, struct xfs_bulkstat_req) +#define XFS_IOC_INUMBERS _IOR ('X', 128, struct xfs_inumbers_req) /* XFS_IOC_GETFSUUID ---------- deprecated 140 */ diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c index cab6832dde22..ae7b743df7d0 100644 --- a/fs/xfs/xfs_ioctl.c +++ b/fs/xfs/xfs_ioctl.c @@ -914,6 +914,56 @@ out_teardown: } STATIC int +xfs_inumbers_fmt( + struct xfs_ibulk *breq, + const struct xfs_inumbers *igrp) +{ + if (copy_to_user(breq->ubuffer, igrp, sizeof(struct xfs_inumbers))) + return -EFAULT; + return xfs_ibulk_advance(breq, sizeof(struct xfs_inumbers)); +} + +/* Handle the v5 inumbers ioctl. */ +STATIC int +xfs_ioc_inumbers( + struct xfs_mount *mp, + unsigned int cmd, + struct xfs_inumbers_req __user *arg) +{ + struct xfs_bulk_ireq hdr; + struct xfs_ibulk breq = { + .mp = mp, + }; + int error; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (XFS_FORCED_SHUTDOWN(mp)) + return -EIO; + + if (copy_from_user(&hdr, &arg->hdr, sizeof(hdr))) + return -EFAULT; + + error = xfs_bulk_ireq_setup(mp, &hdr, &breq, arg->inumbers); + if (error == XFS_ITER_ABORT) + goto out_teardown; + if (error < 0) + return error; + + error = xfs_inumbers(&breq, xfs_inumbers_fmt); + if (error) + return error; + +out_teardown: + xfs_bulk_ireq_teardown(&hdr, &breq); + if (copy_to_user(&arg->hdr, &hdr, sizeof(hdr))) + return -EFAULT; + + return 0; +} + +STATIC int xfs_ioc_fsgeometry( struct xfs_mount *mp, void __user *arg, @@ -2079,6 +2129,8 @@ xfs_file_ioctl( case XFS_IOC_BULKSTAT: return xfs_ioc_bulkstat(mp, cmd, arg); + case XFS_IOC_INUMBERS: + return xfs_ioc_inumbers(mp, cmd, arg); case XFS_IOC_FSGEOMETRY_V1: return xfs_ioc_fsgeometry(mp, arg, 3); diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c index a98a505967ce..7fcf7569743f 100644 --- a/fs/xfs/xfs_ioctl32.c +++ b/fs/xfs/xfs_ioctl32.c @@ -575,6 +575,7 @@ xfs_file_compat_ioctl( case FS_IOC_GETFSMAP: case XFS_IOC_SCRUB_METADATA: case XFS_IOC_BULKSTAT: + case XFS_IOC_INUMBERS: return xfs_file_ioctl(filp, cmd, p); #if !defined(BROKEN_X86_ALIGNMENT) || defined(CONFIG_X86_X32) /* diff --git a/fs/xfs/xfs_ondisk.h b/fs/xfs/xfs_ondisk.h index 954484c6eb96..b6701b4f59a9 100644 --- a/fs/xfs/xfs_ondisk.h +++ b/fs/xfs/xfs_ondisk.h @@ -150,6 +150,7 @@ xfs_check_ondisk_structs(void) XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat, 192); XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers, 24); XFS_CHECK_STRUCT_SIZE(struct xfs_bulkstat_req, 64); + XFS_CHECK_STRUCT_SIZE(struct xfs_inumbers_req, 64); } #endif /* __XFS_ONDISK_H */ |