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selftests: bpf: test_sockmap: handle file creation failures gracefully

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[ Upstream commit 4b67c515036313f3c3ecba3cb2babb9cbddb3f85 ]

test_sockmap creates a temporary file to use for sendpage.
this may fail for various reasons. Handle the error rather
than segfault.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jakub Kicinski 2019-11-27 12:16:45 -08:00 committed by Greg Kroah-Hartman
parent 6ed8f48e6a
commit 93c259c582
1 changed files with 9 additions and 0 deletions
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9
tools/testing/selftests/bpf/test_sockmap.c
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@ -248,6 +248,10 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt,
int i, fp;
file = fopen(".sendpage_tst.tmp", "w+");
if (!file) {
perror("create file for sendpage");
return 1;
}
for (i = 0; i < iov_length * cnt; i++, k++)
fwrite(&k, sizeof(char), 1, file);
fflush(file);
@ -255,6 +259,11 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt,
fclose(file);
fp = open(".sendpage_tst.tmp", O_RDONLY);
if (fp < 0) {
perror("reopen file for sendpage");
return 1;
}
clock_gettime(CLOCK_MONOTONIC, &s->start);
for (i = 0; i < cnt; i++) {
int sent = sendfile(fd, fp, NULL, iov_length);