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authorDarrick J. Wong <darrick.wong@oracle.com>2019-07-04 06:36:28 +0300
committerDarrick J. Wong <darrick.wong@oracle.com>2019-07-04 06:36:28 +0300
commitfba9760a433634067ec01e7d4cdd581d17b149e0 (patch)
tree1021f90d893c9294dc56157d4a876517f09a9d3b /fs/xfs
parent0448b6f488fa66e353a9e00022441cd4aca7f2cf (diff)
downloadlinux-fba9760a433634067ec01e7d4cdd581d17b149e0.tar.xz
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>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/libxfs/xfs_fs.h8
-rw-r--r--fs/xfs/xfs_ioctl.c52
-rw-r--r--fs/xfs/xfs_ioctl32.c1
-rw-r--r--fs/xfs/xfs_ondisk.h1
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 */