t/io_uring: check read of home node file
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/t/io_uring.c b/t/io_uring.c
index ea70204..35bf195 100644
--- a/t/io_uring.c
+++ b/t/io_uring.c
@@ -641,14 +641,18 @@
#ifdef CONFIG_LIBNUMA
const char *base = basename(name);
char str[128];
- int fd, node;
+ int ret, fd, node;
sprintf(str, "/sys/block/%s/device/numa_node", base);
fd = open(str, O_RDONLY);
if (fd < 0)
return -1;
- read(fd, str, sizeof(str));
+ ret = read(fd, str, sizeof(str));
+ if (ret < 0) {
+ close(fd);
+ return -1;
+ }
node = atoi(str);
s->numa_node = node;
close(fd);
