linux/samples/bpf/tracex7_user.c

#define _GNU_SOURCE

#include <stdio.h>
#include <linux/bpf.h>
#include <unistd.h>
#include <bpf/bpf.h>
#include "bpf_load.h"

int main(int argc, char **argv)
{
	FILE *f;
	char filename[256];
	char command[256];
	int ret;

	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);

	if (load_bpf_file(filename)) {
		printf("%s", bpf_log_buf);
		return 1;
	}

	snprintf(command, 256, "mount %s tmpmnt/", argv[1]);
	f = popen(command, "r");
	ret = pclose(f);

	return ret ? 0 : 1;
}
samples/bpf: add a test for bpf_override_return This adds a basic test for bpf_override_return to verify it works. We override the main function for mounting a btrfs fs so it'll return -ENOMEM and then make sure that trying to mount a btrfs fs will fail. Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> 2017-12-11 11:36:49 -05:00			`#define _GNU_SOURCE`

			`#include <stdio.h>`
			`#include <linux/bpf.h>`
			`#include <unistd.h>`
samples: bpf: include bpf/bpf.h instead of local libbpf.h There are two files in the tree called libbpf.h which is becoming problematic. Most samples don't actually need the local libbpf.h they simply include it to get to bpf/bpf.h. Include bpf/bpf.h directly instead. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> 2018-05-14 22:35:02 -07:00			`#include <bpf/bpf.h>`
samples/bpf: add a test for bpf_override_return This adds a basic test for bpf_override_return to verify it works. We override the main function for mounting a btrfs fs so it'll return -ENOMEM and then make sure that trying to mount a btrfs fs will fail. Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> 2017-12-11 11:36:49 -05:00			`#include "bpf_load.h"`

			`int main(int argc, char **argv)`
			`{`
			`FILE *f;`
			`char filename[256];`
			`char command[256];`
			`int ret;`

			`snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);`

			`if (load_bpf_file(filename)) {`
			`printf("%s", bpf_log_buf);`
			`return 1;`
			`}`

			`snprintf(command, 256, "mount %s tmpmnt/", argv[1]);`
			`f = popen(command, "r");`
			`ret = pclose(f);`

			`return ret ? 0 : 1;`
			`}`