/* Copyright (c) 2015 PLUMgrid, http://plumgrid.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 */
#include <linux/ptrace.h>
#include <linux/version.h>
#include <uapi/linux/bpf.h>
#include <uapi/linux/seccomp.h>
#include "bpf_helpers.h"

#define PROG(F) SEC("kprobe/"__stringify(F)) int bpf_func_##F

struct bpf_map_def SEC("maps") progs = {
	.type = BPF_MAP_TYPE_PROG_ARRAY,
	.key_size = sizeof(u32),
	.value_size = sizeof(u32),
	.max_entries = 1024,
};

SEC("kprobe/__seccomp_filter")
int bpf_prog1(struct pt_regs *ctx)
{
	int sc_nr = (int)PT_REGS_PARM1(ctx);

	/* dispatch into next BPF program depending on syscall number */
	bpf_tail_call(ctx, &progs, sc_nr);

	/* fall through -> unknown syscall */
	if (sc_nr >= __NR_getuid && sc_nr <= __NR_getsid) {
		char fmt[] = "syscall=%d (one of get/set uid/pid/gid)\n";
		bpf_trace_printk(fmt, sizeof(fmt), sc_nr);
	}
	return 0;
}

/* we jump here when syscall number == __NR_write */
PROG(__NR_write)(struct pt_regs *ctx)
{
	struct seccomp_data sd;

	bpf_probe_read(&sd, sizeof(sd), (void *)PT_REGS_PARM2(ctx));
	if (sd.args[2] == 512) {
		char fmt[] = "write(fd=%d, buf=%p, size=%d)\n";
		bpf_trace_printk(fmt, sizeof(fmt),
				 sd.args[0], sd.args[1], sd.args[2]);
	}
	return 0;
}

PROG(__NR_read)(struct pt_regs *ctx)
{
	struct seccomp_data sd;

	bpf_probe_read(&sd, sizeof(sd), (void *)PT_REGS_PARM2(ctx));
	if (sd.args[2] > 128 && sd.args[2] <= 1024) {
		char fmt[] = "read(fd=%d, buf=%p, size=%d)\n";
		bpf_trace_printk(fmt, sizeof(fmt),
				 sd.args[0], sd.args[1], sd.args[2]);
	}
	return 0;
}

PROG(__NR_mmap)(struct pt_regs *ctx)
{
	char fmt[] = "mmap\n";
	bpf_trace_printk(fmt, sizeof(fmt));
	return 0;
}

char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;
ef='/cgit.cgi/linux/net-next.git/commit/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/rose/rose_route.c'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/rose?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>rose</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>rose_route.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>4078d3ae27d4ebb85bdcd4d84e9b9a4d059f22bb</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>net/rose/rose_route.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rose/rose_route.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>751321b3dd5040dc5be19bd23f985e80c914621a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=751321b3dd5040dc5be19bd23f985e80c914621a'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/rose/rose_route.c?id=54791b276b4000b307339f269d3bf7db877d536f'>54791b276b4000b307339f269d3bf7db877d536f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/rose/rose_route.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=54791b276b4000b307339f269d3bf7db877d536f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc</div><div class='commit-msg'>Pull sparc fixes from David Miller:
 "Several small bug fixes and tidies, along with a fix for non-resumable
  memory errors triggered by userspace"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Handle PIO &amp; MEM non-resumable errors.
  sparc64: Zero pages on allocation for mondo and error queues.
  sparc: Fixed typo in sstate.c. Replaced panicing with panicking
  sparc: use symbolic names for tsb indexing
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>Diffstat</a> (limited to 'net/rose/rose_route.c')</div><table summary='diffstat' class='diffstat'>