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libfstools: handle open() return value properly in F2FS check
[project/fstools.git]
/
libfstools
/
common.c
diff --git
a/libfstools/common.c
b/libfstools/common.c
index f2d415d7012ce36bb885ed0fc71dcc63092050a8..c4847766a0389a444b2dab39c2c14a0574587d97 100644
(file)
--- a/
libfstools/common.c
+++ b/
libfstools/common.c
@@
-90,8
+90,12
@@
static bool use_f2fs(struct volume *v, uint64_t offset, const char *bdev)
int fd;
fd = open(bdev, O_RDONLY);
+ if (fd < 0)
+ return false;
+
if (ioctl(fd, BLKGETSIZE64, &size) == 0)
ret = size - offset > F2FS_MINSIZE;
+
close(fd);
return ret;