[XFS] stop using xfs_itobp in xfs_bulkstat
xfs_bulkstat only wants the dinode, offset and buffer from a given inode
number. Instead of using xfs_itobp on a fake inode which is complicated
and currently leads to leaks of the security data just use xfs_inotobp
which is designed to do exactly the kind of lookup xfs_bulkstat wants. The
only thing that's missing in xfs_inotobp is a flags paramter that let's us
pass down XFS_IMAP_BULKSTAT, but that can easily added.
SGI-PV: 987246
SGI-Modid: xfs-linux-melb:xfs-kern:32397a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index c83f699..35e4191 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -222,25 +222,26 @@
* Use xfs_imap() to determine the size and location of the
* buffer to read from disk.
*/
-STATIC int
+int
xfs_inotobp(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
xfs_dinode_t **dipp,
xfs_buf_t **bpp,
- int *offset)
+ int *offset,
+ uint imap_flags)
{
xfs_imap_t imap;
xfs_buf_t *bp;
int error;
imap.im_blkno = 0;
- error = xfs_imap(mp, tp, ino, &imap, XFS_IMAP_LOOKUP);
+ error = xfs_imap(mp, tp, ino, &imap, imap_flags | XFS_IMAP_LOOKUP);
if (error)
return error;
- error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, 0);
+ error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, imap_flags);
if (error)
return error;
@@ -792,7 +793,7 @@
/*
* Allocate and initialise an xfs_inode.
*/
-struct xfs_inode *
+STATIC struct xfs_inode *
xfs_inode_alloc(
struct xfs_mount *mp,
xfs_ino_t ino)
@@ -2046,7 +2047,7 @@
}
next_ino = XFS_AGINO_TO_INO(mp, agno, next_agino);
error = xfs_inotobp(mp, tp, next_ino, &last_dip,
- &last_ibp, &last_offset);
+ &last_ibp, &last_offset, 0);
if (error) {
cmn_err(CE_WARN,
"xfs_iunlink_remove: xfs_inotobp() returned an error %d on %s. Returning error.",
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index a5aeb9c..5d12cfe 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -158,7 +158,7 @@
#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
/*
- * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate().
+ * Flags for xfs_inotobp, xfs_itobp(), xfs_imap() and xfs_dilocate().
*/
#define XFS_IMAP_LOOKUP 0x1
#define XFS_IMAP_BULKSTAT 0x2
@@ -514,7 +514,6 @@
xfs_fsize_t, int, int);
int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
-struct xfs_inode * xfs_inode_alloc(struct xfs_mount *, xfs_ino_t);
void xfs_idestroy(xfs_inode_t *);
void xfs_iextract(xfs_inode_t *);
void xfs_iext_realloc(xfs_inode_t *, int, int);
@@ -531,6 +530,9 @@
#endif /* __KERNEL__ */
+int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
+ xfs_ino_t, struct xfs_dinode **,
+ struct xfs_buf **, int *, uint);
int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
struct xfs_inode *, struct xfs_dinode **,
struct xfs_buf **, xfs_daddr_t, uint, uint);
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 42a214b..3511803 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -359,7 +359,6 @@
int ubused; /* bytes used by formatter */
xfs_buf_t *bp; /* ptr to on-disk inode cluster buf */
xfs_dinode_t *dip; /* ptr into bp for specific inode */
- xfs_inode_t *ip; /* ptr to in-core inode struct */
/*
* Get the last inode value, see if there's nothing to do.
@@ -585,6 +584,8 @@
if (flags & (BULKSTAT_FG_QUICK |
BULKSTAT_FG_INLINE)) {
+ int offset;
+
ino = XFS_AGINO_TO_INO(mp, agno,
agino);
bno = XFS_AGB_TO_DADDR(mp, agno,
@@ -595,19 +596,13 @@
*/
if (bp)
xfs_buf_relse(bp);
- ip = xfs_inode_alloc(mp, ino);
- if (!ip) {
- bp = NULL;
- rval = ENOMEM;
- break;
- }
- error = xfs_itobp(mp, NULL, ip,
- &dip, &bp, bno,
- XFS_IMAP_BULKSTAT,
- XFS_BUF_LOCK);
+
+ error = xfs_inotobp(mp, NULL, ino, &dip,
+ &bp, &offset,
+ XFS_IMAP_BULKSTAT);
+
if (!error)
- clustidx = ip->i_boffset / mp->m_sb.sb_inodesize;
- xfs_idestroy(ip);
+ clustidx = offset / mp->m_sb.sb_inodesize;
if (XFS_TEST_ERROR(error != 0,
mp, XFS_ERRTAG_BULKSTAT_READ_CHUNK,
XFS_RANDOM_BULKSTAT_READ_CHUNK)) {