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-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl.c20
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl32.c3
-rw-r--r--fs/xfs/xfs_itable.c43
3 files changed, 40 insertions, 26 deletions
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index 2b34bad48b07..98a56568bb24 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -1047,24 +1047,20 @@ xfs_ioc_bulkstat(
if ((count = bulkreq.icount) <= 0)
return -XFS_ERROR(EINVAL);
+ if (bulkreq.ubuffer == NULL)
+ return -XFS_ERROR(EINVAL);
+
if (cmd == XFS_IOC_FSINUMBERS)
error = xfs_inumbers(mp, &inlast, &count,
bulkreq.ubuffer, xfs_inumbers_fmt);
else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
error = xfs_bulkstat_single(mp, &inlast,
bulkreq.ubuffer, &done);
- else { /* XFS_IOC_FSBULKSTAT */
- if (count == 1 && inlast != 0) {
- inlast++;
- error = xfs_bulkstat_single(mp, &inlast,
- bulkreq.ubuffer, &done);
- } else {
- error = xfs_bulkstat(mp, &inlast, &count,
- (bulkstat_one_pf)xfs_bulkstat_one, NULL,
- sizeof(xfs_bstat_t), bulkreq.ubuffer,
- BULKSTAT_FG_QUICK, &done);
- }
- }
+ else /* XFS_IOC_FSBULKSTAT */
+ error = xfs_bulkstat(mp, &inlast, &count,
+ (bulkstat_one_pf)xfs_bulkstat_one, NULL,
+ sizeof(xfs_bstat_t), bulkreq.ubuffer,
+ BULKSTAT_FG_QUICK, &done);
if (error)
return -error;
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c
index 0046bdd5b7f1..bf2a956b63c2 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl32.c
@@ -291,6 +291,9 @@ xfs_ioc_bulkstat_compat(
if ((count = bulkreq.icount) <= 0)
return -XFS_ERROR(EINVAL);
+ if (bulkreq.ubuffer == NULL)
+ return -XFS_ERROR(EINVAL);
+
if (cmd == XFS_IOC_FSINUMBERS)
error = xfs_inumbers(mp, &inlast, &count,
bulkreq.ubuffer, xfs_inumbers_fmt_compat);
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 9972992fd3c3..9fc4c2886529 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -316,6 +316,8 @@ xfs_bulkstat_use_dinode(
return 1;
}
+#define XFS_BULKSTAT_UBLEFT(ubleft) ((ubleft) >= statstruct_size)
+
/*
* Return stat information in bulk (by-inode) for the filesystem.
*/
@@ -353,7 +355,7 @@ xfs_bulkstat(
xfs_inobt_rec_incore_t *irbp; /* current irec buffer pointer */
xfs_inobt_rec_incore_t *irbuf; /* start of irec buffer */
xfs_inobt_rec_incore_t *irbufend; /* end of good irec buffer entries */
- xfs_ino_t lastino=0; /* last inode number returned */
+ xfs_ino_t lastino; /* last inode number returned */
int nbcluster; /* # of blocks in a cluster */
int nicluster; /* # of inodes in a cluster */
int nimask; /* mask for inode clusters */
@@ -373,6 +375,7 @@ xfs_bulkstat(
* Get the last inode value, see if there's nothing to do.
*/
ino = (xfs_ino_t)*lastinop;
+ lastino = ino;
dip = NULL;
agno = XFS_INO_TO_AGNO(mp, ino);
agino = XFS_INO_TO_AGINO(mp, ino);
@@ -382,6 +385,9 @@ xfs_bulkstat(
*ubcountp = 0;
return 0;
}
+ if (!ubcountp || *ubcountp <= 0) {
+ return EINVAL;
+ }
ubcount = *ubcountp; /* statstruct's */
ubleft = ubcount * statstruct_size; /* bytes */
*ubcountp = ubelem = 0;
@@ -402,7 +408,8 @@ xfs_bulkstat(
* inode returned; 0 means start of the allocation group.
*/
rval = 0;
- while (ubleft >= statstruct_size && agno < mp->m_sb.sb_agcount) {
+ while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) {
+ cond_resched();
bp = NULL;
down_read(&mp->m_peraglock);
error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
@@ -499,6 +506,7 @@ xfs_bulkstat(
break;
error = xfs_inobt_lookup_ge(cur, agino, 0, 0,
&tmp);
+ cond_resched();
}
/*
* If ran off the end of the ag either with an error,
@@ -542,6 +550,7 @@ xfs_bulkstat(
*/
agino = gino + XFS_INODES_PER_CHUNK;
error = xfs_inobt_increment(cur, 0, &tmp);
+ cond_resched();
}
/*
* Drop the btree buffers and the agi buffer.
@@ -555,12 +564,12 @@ xfs_bulkstat(
*/
irbufend = irbp;
for (irbp = irbuf;
- irbp < irbufend && ubleft >= statstruct_size; irbp++) {
+ irbp < irbufend && XFS_BULKSTAT_UBLEFT(ubleft); irbp++) {
/*
* Now process this chunk of inodes.
*/
for (agino = irbp->ir_startino, chunkidx = clustidx = 0;
- ubleft > 0 &&
+ XFS_BULKSTAT_UBLEFT(ubleft) &&
irbp->ir_freecount < XFS_INODES_PER_CHUNK;
chunkidx++, clustidx++, agino++) {
ASSERT(chunkidx < XFS_INODES_PER_CHUNK);
@@ -663,15 +672,13 @@ xfs_bulkstat(
ubleft, private_data,
bno, &ubused, dip, &fmterror);
if (fmterror == BULKSTAT_RV_NOTHING) {
- if (error == EFAULT) {
- ubleft = 0;
- rval = error;
- break;
- }
- else if (error == ENOMEM)
+ if (error && error != ENOENT &&
+ error != EINVAL) {
ubleft = 0;
- else
- lastino = ino;
+ rval = error;
+ break;
+ }
+ lastino = ino;
continue;
}
if (fmterror == BULKSTAT_RV_GIVEUP) {
@@ -686,6 +693,8 @@ xfs_bulkstat(
ubelem++;
lastino = ino;
}
+
+ cond_resched();
}
if (bp)
@@ -694,11 +703,12 @@ xfs_bulkstat(
/*
* Set up for the next loop iteration.
*/
- if (ubleft > 0) {
+ if (XFS_BULKSTAT_UBLEFT(ubleft)) {
if (end_of_ag) {
agno++;
agino = 0;
- }
+ } else
+ agino = XFS_INO_TO_AGINO(mp, lastino);
} else
break;
}
@@ -707,6 +717,11 @@ xfs_bulkstat(
*/
kmem_free(irbuf, irbsize);
*ubcountp = ubelem;
+ /*
+ * Found some inodes, return them now and return the error next time.
+ */
+ if (ubelem)
+ rval = 0;
if (agno >= mp->m_sb.sb_agcount) {
/*
* If we ran out of filesystem, mark lastino as off
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 18:02:19 +0100