#include <stdio.h>
#include <linux/bpf.h>
#include <unistd.h>
#include <linux/filter.h>
#include <linux/seccomp.h>
#include <sys/prctl.h>
#include "libbpf.h"
#include "bpf_load.h"
#include <sys/resource.h>

/* install fake seccomp program to enable seccomp code path inside the kernel,
 * so that our kprobe attached to seccomp_phase1() can be triggered
 */
static void install_accept_all_seccomp(void)
{
	struct sock_filter filter[] = {
		BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW),
	};
	struct sock_fprog prog = {
		.len = (unsigned short)(sizeof(filter)/sizeof(filter[0])),
		.filter = filter,
	};
	if (prctl(PR_SET_SECCOMP, 2, &prog))
		perror("prctl");
}

int main(int ac, char **argv)
{
	FILE *f;
	char filename[256];
	struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};

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

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

	install_accept_all_seccomp();

	f = popen("dd if=/dev/zero of=/dev/null count=5", "r");
	(void) f;

	read_trace_pipe();

	return 0;
}
<option value='nds-private-remove' selected='selected'>nds-private-remove</option>
<option value='packet-loop-back'>packet-loop-back</option>
<option value='packet-rx-pump-back'>packet-rx-pump-back</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
<table class='tabs'><tr><td>
<a href='/cgit.cgi/linux/net-next.git/?h=nds-private-remove'>summary</a><a href='/cgit.cgi/linux/net-next.git/refs/?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>refs</a><a class='active' href='/cgit.cgi/linux/net-next.git/log/sound/pci/mixart?h=nds-private-remove'>log</a><a href='/cgit.cgi/linux/net-next.git/tree/sound/pci/mixart?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>tree</a><a href='/cgit.cgi/linux/net-next.git/commit/sound/pci/mixart?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/sound/pci/mixart?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/sound/pci/mixart'>
<input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='fdace6c224e9fc0e81337b6fee3cfd136824c983'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>sound</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/pci?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>pci</a>/<a href='/cgit.cgi/linux/net-next.git/log/sound/pci/mixart?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983'>mixart</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/sound/pci/mixart?h=nds-private-remove&amp;id=fdace6c224e9fc0e81337b6fee3cfd136824c983&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>