Make it possible to check whether the return value of ioctl() is negative.
Signed-off-by: Bart Van Assche <bvanass...@acm.org>
---
tools/f2fs_io/f2fs_io.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c
index e807177a4174..6bb094cc7f25 100644
--- a/tools/f2fs_io/f2fs_io.c
+++ b/tools/f2fs_io/f2fs_io.c
@@ -513,7 +513,7 @@ static void do_erase(int argc, char **argv, const struct
cmd_desc *cmd)
static void do_write(int argc, char **argv, const struct cmd_desc *cmd)
{
- u64 buf_size = 0, inc_num = 0, ret = 0, written = 0;
+ u64 buf_size = 0, inc_num = 0, written = 0;
u64 offset;
char *buf = NULL;
unsigned bs, count, i;
@@ -561,6 +561,8 @@ static void do_write(int argc, char **argv, const struct
cmd_desc *cmd)
fd = xopen(argv[6], O_CREAT | O_WRONLY | flags, 0755);
if (atomic_commit || atomic_abort) {
+ int ret;
+
if (argc == 8)
useconds = atoi(argv[7]) * 1000;
@@ -573,6 +575,8 @@ static void do_write(int argc, char **argv, const struct
cmd_desc *cmd)
total_time = get_current_us();
for (i = 0; i < count; i++) {
+ uint64_t ret;
+
if (!strcmp(argv[4], "inc_num"))
*(int *)buf = inc_num++;
else if (!strcmp(argv[4], "rand"))
@@ -593,12 +597,16 @@ static void do_write(int argc, char **argv, const struct
cmd_desc *cmd)
usleep(useconds);
if (atomic_commit) {
+ int ret;
+
ret = ioctl(fd, F2FS_IOC_COMMIT_ATOMIC_WRITE);
if (ret < 0) {
fputs("committing atomic write failed\n", stderr);
exit(1);
}
} else if (atomic_abort) {
+ int ret;
+
ret = ioctl(fd, F2FS_IOC_ABORT_VOLATILE_WRITE);
if (ret < 0) {
fputs("aborting atomic write failed\n", stderr);
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