fuse: honor RLIMIT_FSIZE in fuse_file_fallocate

fstests generic/228 reported this failure that fuse fallocate does not honor what 'ulimit -f' has set. This adds the necessary inode_newsize_ok() check. Signed-off-by: Liu Bo <[email protected]> Fixes: 05ba1f0 ("fuse: add FALLOCATE operation") Cc: <[email protected]> # v3.5 Signed-off-by: Miklos Szeredi <[email protected]>
akvadrako · Apr 24, 2019 · 0cbade0 · 0cbade0
1 parent 9de5be0
commit 0cbade0
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
@@ -3044,6 +3044,13 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
 		}
 	}
 
+	if (!(mode & FALLOC_FL_KEEP_SIZE) &&
+	    offset + length > i_size_read(inode)) {
+		err = inode_newsize_ok(inode, offset + length);
+		if (err)
+			return err;
+	}
+
 	if (!(mode & FALLOC_FL_KEEP_SIZE))
 		set_bit(FUSE_I_SIZE_UNSTABLE, &fi->state);