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selftests: bpf: Use a temporary file in test_sockmap 

Use a proper temporary file for sendpage tests. This means that running
the tests doesn't clutter the working directory, and allows running the
test on read-only filesystems.

Fixes: 16962b2404 ("bpf: sockmap, add selftests")
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200124112754.19664-2-lmb@cloudflare.com
This commit is contained in:
Lorenz Bauer 2020-01-24 11:27:51 +00:00 committed by Daniel Borkmann
parent 41258289a8
commit c31dbb1e41
1 changed files with 5 additions and 10 deletions
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15
tools/testing/selftests/bpf/test_sockmap.c
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@ -331,7 +331,7 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt,
FILE *file;
int i, fp;
file = fopen(".sendpage_tst.tmp", "w+");
file = tmpfile();
if (!file) {
perror("create file for sendpage");
return 1;
@ -340,13 +340,8 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt,
fwrite(&k, sizeof(char), 1, file);
fflush(file);
fseek(file, 0, SEEK_SET);
fclose(file);
fp = open(".sendpage_tst.tmp", O_RDONLY);
if (fp < 0) {
perror("reopen file for sendpage");
return 1;
}
fp = fileno(file);
clock_gettime(CLOCK_MONOTONIC, &s->start);
for (i = 0; i < cnt; i++) {
@ -354,11 +349,11 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt,
if (!drop && sent < 0) {
perror("send loop error");
close(fp);
fclose(file);
return sent;
} else if (drop && sent >= 0) {
printf("sendpage loop error expected: %i\n", sent);
close(fp);
fclose(file);
return -EIO;
}
@ -366,7 +361,7 @@ static int msg_loop_sendpage(int fd, int iov_length, int cnt,
s->bytes_sent += sent;
}
clock_gettime(CLOCK_MONOTONIC, &s->end);
close(fp);
fclose(file);
return 0;
}