bpf samples: update tracex5 sample to use __seccomp_filter
seccomp_phase1() does not exist anymore. Instead, update sample to use
__seccomp_filter(). While at it, set max locked memory to unlimited.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/samples/bpf/tracex5_kern.c b/samples/bpf/tracex5_kern.c
index f95f232..fd12d71 100644
--- a/samples/bpf/tracex5_kern.c
+++ b/samples/bpf/tracex5_kern.c
@@ -19,20 +19,18 @@
.max_entries = 1024,
};
-SEC("kprobe/seccomp_phase1")
+SEC("kprobe/__seccomp_filter")
int bpf_prog1(struct pt_regs *ctx)
{
- struct seccomp_data sd;
-
- bpf_probe_read(&sd, sizeof(sd), (void *)PT_REGS_PARM1(ctx));
+ int sc_nr = (int)PT_REGS_PARM1(ctx);
/* dispatch into next BPF program depending on syscall number */
- bpf_tail_call(ctx, &progs, sd.nr);
+ bpf_tail_call(ctx, &progs, sc_nr);
/* fall through -> unknown syscall */
- if (sd.nr >= __NR_getuid && sd.nr <= __NR_getsid) {
+ 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), sd.nr);
+ bpf_trace_printk(fmt, sizeof(fmt), sc_nr);
}
return 0;
}
@@ -42,7 +40,7 @@
{
struct seccomp_data sd;
- bpf_probe_read(&sd, sizeof(sd), (void *)PT_REGS_PARM1(ctx));
+ 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),
@@ -55,7 +53,7 @@
{
struct seccomp_data sd;
- bpf_probe_read(&sd, sizeof(sd), (void *)PT_REGS_PARM1(ctx));
+ 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),