diff options
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_ioctl.c | 20 | ||||
| -rw-r--r-- | fs/xfs/linux-2.6/xfs_ioctl32.c | 3 | ||||
| -rw-r--r-- | fs/xfs/xfs_itable.c | 43 |
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 |