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[v5,08/10] tests/bios-tables-test: check the value returned by fopen()

Message ID 1407747189-7936-9-git-send-email-zhang.zhanghailiang@huawei.com
State New
Headers show

Commit Message

Zhanghailiang Aug. 11, 2014, 8:53 a.m. UTC 
The function fopen() may fail, so check its return value.

Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: Li Liu <john.liuli@huawei.com>
---
 tests/bios-tables-test.c | 5 +++++
 1 file changed, 5 insertions(+)

Comments

Alex Bennée Aug. 11, 2014, 9:33 a.m. UTC | #1 
zhanghailiang writes:

> The function fopen() may fail, so check its return value.
>
> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
> Signed-off-by: Li Liu <john.liuli@huawei.com>
> ---
>  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;
> +    }

if (!f) would also be acceptable short-hand.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>

>      fwrite(boot_sector, 1, sizeof boot_sector, f);
>      fclose(f);
diff mbox

Patch

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);