stat() can fail due to a lot of reasons, let f2fs_dev_is_umounted()
detect such error and handle it correctly.
Signed-off-by: Chao Yu <yuch...@huawei.com>
---
lib/libf2fs.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/lib/libf2fs.c b/lib/libf2fs.c
index c692bf2da635..6a1040feff32 100644
--- a/lib/libf2fs.c
+++ b/lib/libf2fs.c
@@ -713,7 +713,14 @@ int f2fs_dev_is_umounted(char *path)
st_buf = malloc(sizeof(struct stat));
ASSERT(st_buf);
- if (stat(path, st_buf) == 0 && S_ISBLK(st_buf->st_mode)) {
+ ret = stat(path, st_buf);
+ if (ret) {
+ MSG(0, "\tError: stat %s failed!\n", path);
+ free(st_buf);
+ return -1;
+ }
+
+ if (S_ISBLK(st_buf->st_mode)) {
int fd = open(path, O_RDONLY | O_EXCL);
if (fd >= 0) {
--
2.18.0.rc1
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