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Commit 93c259c5 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by Greg Kroah-Hartman
Browse files

selftests: bpf: test_sockmap: handle file creation failures gracefully 



[ 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: default avatarJakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: default avatarSimon Horman <simon.horman@netronome.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6ed8f48e

tools/testing/selftests/bpf/test_sockmap.c

+9 −0
Original line number Diff line number Diff line
@@ -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);