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bpf: Revert bpf_overrid_function() helper changes.

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NACK'd by x86 maintainer.

Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
David S. Miller 2017-11-11 18:24:55 +09:00
commit f3edacbd69
21 changed files with 11 additions and 204 deletions
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4
samples/bpf/Makefile
View file

@ -15,7 +15,6 @@ hostprogs-y += tracex3
hostprogs-y += tracex4
hostprogs-y += tracex5
hostprogs-y += tracex6
hostprogs-y += tracex7
hostprogs-y += test_probe_write_user
hostprogs-y += trace_output
hostprogs-y += lathist
@ -62,7 +61,6 @@ tracex3-objs := bpf_load.o $(LIBBPF) tracex3_user.o
tracex4-objs := bpf_load.o $(LIBBPF) tracex4_user.o
tracex5-objs := bpf_load.o $(LIBBPF) tracex5_user.o
tracex6-objs := bpf_load.o $(LIBBPF) tracex6_user.o
tracex7-objs := bpf_load.o $(LIBBPF) tracex7_user.o
load_sock_ops-objs := bpf_load.o $(LIBBPF) load_sock_ops.o
test_probe_write_user-objs := bpf_load.o $(LIBBPF) test_probe_write_user_user.o
trace_output-objs := bpf_load.o $(LIBBPF) trace_output_user.o
@ -106,7 +104,6 @@ always += tracex3_kern.o
always += tracex4_kern.o
always += tracex5_kern.o
always += tracex6_kern.o
always += tracex7_kern.o
always += sock_flags_kern.o
always += test_probe_write_user_kern.o
always += trace_output_kern.o
@ -161,7 +158,6 @@ HOSTLOADLIBES_tracex3 += -lelf
HOSTLOADLIBES_tracex4 += -lelf -lrt
HOSTLOADLIBES_tracex5 += -lelf
HOSTLOADLIBES_tracex6 += -lelf
HOSTLOADLIBES_tracex7 += -lelf
HOSTLOADLIBES_test_cgrp2_sock2 += -lelf
HOSTLOADLIBES_load_sock_ops += -lelf
HOSTLOADLIBES_test_probe_write_user += -lelf

15
samples/bpf/test_override_return.sh
View file

@ -1,15 +0,0 @@
#!/bin/bash
rm -f testfile.img
dd if=/dev/zero of=testfile.img bs=1M seek=1000 count=1
DEVICE=$(losetup --show -f testfile.img)
mkfs.btrfs -f $DEVICE
mkdir tmpmnt
./tracex7 $DEVICE
if [ $? -eq 0 ]
then
echo "SUCCESS!"
else
echo "FAILED!"
fi
losetup -d $DEVICE

16
samples/bpf/tracex7_kern.c
View file

@ -1,16 +0,0 @@
#include <uapi/linux/ptrace.h>
#include <uapi/linux/bpf.h>
#include <linux/version.h>
#include "bpf_helpers.h"
SEC("kprobe/open_ctree")
int bpf_prog1(struct pt_regs *ctx)
{
unsigned long rc = -12;
bpf_override_return(ctx, rc);
return 0;
}
char _license[] SEC("license") = "GPL";
u32 _version SEC("version") = LINUX_VERSION_CODE;

28
samples/bpf/tracex7_user.c
View file

@ -1,28 +0,0 @@
#define _GNU_SOURCE
#include <stdio.h>
#include <linux/bpf.h>
#include <unistd.h>
#include "libbpf.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;
}