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| author | Chengguang Xu <cgxu519@mykernel.net> | 2021-03-09 08:21:18 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2021-03-26 04:20:50 +0300 |
| commit | 0bb2045ce5ce67b0428301c117ec960b3f705a44 (patch) | |
| tree | cb4623e3716402c37366d1c367e955765b45cf02 /fs/f2fs | |
| parent | e1175f02291141bbd924fc578299305fcde35855 (diff) | |
| download | linux-0bb2045ce5ce67b0428301c117ec960b3f705a44.tar.xz | |
f2fs: fix to use per-inode maxbytes in f2fs_fiemap
F2FS inode may have different max size,
so change to use per-inode maxbytes.
Signed-off-by: Chengguang Xu <cgxu519@mykernel.net>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/data.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 0e749cf60e11..4bf7e79c8342 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1837,6 +1837,7 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, int ret = 0; bool compr_cluster = false; unsigned int cluster_size = F2FS_I(inode)->i_cluster_size; + loff_t maxbytes; if (fieinfo->fi_flags & FIEMAP_FLAG_CACHE) { ret = f2fs_precache_extents(inode); @@ -1850,6 +1851,15 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, inode_lock(inode); + maxbytes = max_file_blocks(inode) << F2FS_BLKSIZE_BITS; + if (start > maxbytes) { + ret = -EFBIG; + goto out; + } + + if (len > maxbytes || (maxbytes - len) < start) + len = maxbytes - start; + if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) { ret = f2fs_xattr_fiemap(inode, fieinfo); goto out; |