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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2017-09-25 13:23:03 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-05 10:35:52 +0300 |
| commit | 9f119f5cc0480e7d1eaa4e16ecbcddcdd5e8db6f (patch) | |
| tree | e446a6c04ea63f00c624c9d4c5214dd63b255bdc | |
| parent | 64304f5ae2f37d54072b208d53fb692ef941d168 (diff) | |
| download | linux-9f119f5cc0480e7d1eaa4e16ecbcddcdd5e8db6f.tar.xz | |
vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets
commit fc46820b27a2d9a46f7e90c9ceb4a64a1bc5fab8 upstream.
In generic_file_llseek_size, return -ENXIO for negative offsets as well
as offsets beyond EOF. This affects filesystems which don't implement
SEEK_HOLE / SEEK_DATA internally, possibly because they don't support
holes.
Fixes xfstest generic/448.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/read_write.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 7d9318c3d43c..1afb99c33c63 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -116,7 +116,7 @@ generic_file_llseek_size(struct file *file, loff_t offset, int whence, * In the generic case the entire file is data, so as long as * offset isn't at the end of the file then the offset is data. */ - if (offset >= eof) + if ((unsigned long long)offset >= eof) return -ENXIO; break; case SEEK_HOLE: @@ -124,7 +124,7 @@ generic_file_llseek_size(struct file *file, loff_t offset, int whence, * There is a virtual hole at the end of the file, so as long as * offset isn't i_size or larger, return i_size. */ - if (offset >= eof) + if ((unsigned long long)offset >= eof) return -ENXIO; offset = eof; break; |