[Qemu-trivial] [PATCH v6 08/10] tests/bios-tables-test: check the value returned by fopen()

[zhanghailiang]

The function fopen() may fail, so check its return value.

Signed-off-by: zhanghailiang <address@hidden>
Signed-off-by: Li Liu <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
---
 tests/bios-tables-test.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index 045eb27..28ec28d 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -790,6 +790,11 @@ int main(int argc, char *argv[])
     const char *arch = qtest_get_arch();
     FILE *f = fopen(disk, "w");
     int ret;
+
+    if (f == NULL) {
+        fprintf(stderr, "Couldn't open \"%s\": %s", disk, strerror(errno));
+        return -1;
+    }
     fwrite(boot_sector, 1, sizeof boot_sector, f);
     fclose(f);
 
-- 
1.7.12.4