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| author | Daniel T. Lee <danieltimlee@gmail.com> | 2020-03-21 19:04:23 +0900 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-03-23 22:27:51 +0100 |
| commit | 24a6034acc922f1f6292636be4ec4dc3d9b4d2d7 (patch) | |
| tree | 727c570476d15c624e63c61ffac6deb56f71bf05 /samples/bpf | |
| parent | c9b24312040edaa89acb6fb91a9a53fb4775309e (diff) | |
| download | linux-24a6034acc922f1f6292636be4ec4dc3d9b4d2d7.tar.gz linux-24a6034acc922f1f6292636be4ec4dc3d9b4d2d7.tar.bz2 linux-24a6034acc922f1f6292636be4ec4dc3d9b4d2d7.zip | |
samples, bpf: Move read_trace_pipe to trace_helpers
To reduce the reliance of trace samples (trace*_user) on bpf_load,
move read_trace_pipe to trace_helpers. By moving this bpf_loader helper
elsewhere, trace functions can be easily migrated to libbbpf.
Signed-off-by: Daniel T. Lee <danieltimlee@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200321100424.1593964-2-danieltimlee@gmail.com
Diffstat (limited to 'samples/bpf')
| -rw-r--r-- | samples/bpf/Makefile | 4 | ||||
| -rw-r--r-- | samples/bpf/bpf_load.c | 20 | ||||
| -rw-r--r-- | samples/bpf/bpf_load.h | 1 | ||||
| -rw-r--r-- | samples/bpf/tracex1_user.c | 1 | ||||
| -rw-r--r-- | samples/bpf/tracex5_user.c | 1 |
5 files changed, 4 insertions, 23 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 79b0fee6943b..ff0061467dd3 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -64,11 +64,11 @@ fds_example-objs := fds_example.o sockex1-objs := sockex1_user.o sockex2-objs := sockex2_user.o sockex3-objs := bpf_load.o sockex3_user.o -tracex1-objs := bpf_load.o tracex1_user.o +tracex1-objs := bpf_load.o tracex1_user.o $(TRACE_HELPERS) tracex2-objs := bpf_load.o tracex2_user.o tracex3-objs := bpf_load.o tracex3_user.o tracex4-objs := bpf_load.o tracex4_user.o -tracex5-objs := bpf_load.o tracex5_user.o +tracex5-objs := bpf_load.o tracex5_user.o $(TRACE_HELPERS) tracex6-objs := bpf_load.o tracex6_user.o tracex7-objs := bpf_load.o tracex7_user.o test_probe_write_user-objs := bpf_load.o test_probe_write_user_user.o diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c index 4574b1939e49..c5ad528f046e 100644 --- a/samples/bpf/bpf_load.c +++ b/samples/bpf/bpf_load.c @@ -665,23 +665,3 @@ int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map) { return do_load_bpf_file(path, fixup_map); } - -void read_trace_pipe(void) -{ - int trace_fd; - - trace_fd = open(DEBUGFS "trace_pipe", O_RDONLY, 0); - if (trace_fd < 0) - return; - - while (1) { - static char buf[4096]; - ssize_t sz; - - sz = read(trace_fd, buf, sizeof(buf) - 1); - if (sz > 0) { - buf[sz] = 0; - puts(buf); - } - } -} diff --git a/samples/bpf/bpf_load.h b/samples/bpf/bpf_load.h index 814894a12974..4fcd258c616f 100644 --- a/samples/bpf/bpf_load.h +++ b/samples/bpf/bpf_load.h @@ -53,6 +53,5 @@ extern int map_data_count; int load_bpf_file(char *path); int load_bpf_file_fixup_map(const char *path, fixup_map_cb fixup_map); -void read_trace_pipe(void); int bpf_set_link_xdp_fd(int ifindex, int fd, __u32 flags); #endif diff --git a/samples/bpf/tracex1_user.c b/samples/bpf/tracex1_user.c index af8c20608ab5..55fddbd08702 100644 --- a/samples/bpf/tracex1_user.c +++ b/samples/bpf/tracex1_user.c @@ -4,6 +4,7 @@ #include <unistd.h> #include <bpf/bpf.h> #include "bpf_load.h" +#include "trace_helpers.h" int main(int ac, char **argv) { diff --git a/samples/bpf/tracex5_user.c b/samples/bpf/tracex5_user.c index c4ab91c89494..c2317b39e0d2 100644 --- a/samples/bpf/tracex5_user.c +++ b/samples/bpf/tracex5_user.c @@ -8,6 +8,7 @@ #include <bpf/bpf.h> #include "bpf_load.h" #include <sys/resource.h> +#include "trace_helpers.h" /* install fake seccomp program to enable seccomp code path inside the kernel, * so that our kprobe attached to seccomp_phase1() can be triggered |