diff options
Diffstat (limited to 'sys/gnu/fs/ext2fs/ext2_bmap.c')
| -rw-r--r-- | sys/gnu/fs/ext2fs/ext2_bmap.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/sys/gnu/fs/ext2fs/ext2_bmap.c b/sys/gnu/fs/ext2fs/ext2_bmap.c index 9056340..ab4ac52 100644 --- a/sys/gnu/fs/ext2fs/ext2_bmap.c +++ b/sys/gnu/fs/ext2fs/ext2_bmap.c @@ -47,6 +47,7 @@ #include <sys/vnode.h> #include <sys/mount.h> #include <sys/resourcevar.h> +#include <sys/stat.h> #include <ufs/ufs/extattr.h> #include <ufs/ufs/quota.h> @@ -115,7 +116,7 @@ ufs_bmaparray(vp, bn, bnp, ap, nump, runp, runb) struct indir a[NIADDR+1], *xap; ufs_daddr_t daddr; long metalbn; - int error, maxrun, num; + int error, num, maxrun = 0; ip = VTOI(vp); mp = vp->v_mount; @@ -127,6 +128,7 @@ ufs_bmaparray(vp, bn, bnp, ap, nump, runp, runb) #endif if (runp) { + maxrun = mp->mnt_iosize_max / mp->mnt_stat.f_iosize - 1; *runp = 0; } @@ -134,7 +136,6 @@ ufs_bmaparray(vp, bn, bnp, ap, nump, runp, runb) *runb = 0; } - maxrun = mp->mnt_iosize_max / mp->mnt_stat.f_iosize - 1; xap = ap == NULL ? a : ap; if (!nump) @@ -146,9 +147,12 @@ ufs_bmaparray(vp, bn, bnp, ap, nump, runp, runb) num = *nump; if (num == 0) { *bnp = blkptrtodb(ump, ip->i_db[bn]); - if (*bnp == 0) - *bnp = -1; - else if (runp) { + if (*bnp == 0) { + if (ip->i_flags & SF_SNAPSHOT) + *bnp = blkptrtodb(ump, bn * ump->um_seqinc); + else + *bnp = -1; + } else if (runp) { daddr_t bnb = bn; for (++bn; bn < NDADDR && *runp < maxrun && is_sequential(ump, ip->i_db[bn - 1], ip->i_db[bn]); @@ -226,8 +230,13 @@ ufs_bmaparray(vp, bn, bnp, ap, nump, runp, runb) if (bp) bqrelse(bp); - daddr = blkptrtodb(ump, daddr); - *bnp = daddr == 0 ? -1 : daddr; + *bnp = blkptrtodb(ump, daddr); + if (*bnp == 0) { + if (ip->i_flags & SF_SNAPSHOT) + *bnp = blkptrtodb(ump, bn * ump->um_seqinc); + else + *bnp = -1; + } return (0); } |
