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-rw-r--r--tools/testing/selftests/bpf/test_current_pid_tgid_new_ns.c160
1 files changed, 0 insertions, 160 deletions
diff --git a/tools/testing/selftests/bpf/test_current_pid_tgid_new_ns.c b/tools/testing/selftests/bpf/test_current_pid_tgid_new_ns.c
deleted file mode 100644
index ec53b1ef90d2..000000000000
--- a/tools/testing/selftests/bpf/test_current_pid_tgid_new_ns.c
+++ /dev/null
@@ -1,160 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* Copyright (c) 2020 Carlos Neira cneirabustos@gmail.com */
-#define _GNU_SOURCE
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <sys/syscall.h>
-#include <sched.h>
-#include <sys/wait.h>
-#include <sys/mount.h>
-#include "test_progs.h"
-
-#define CHECK_NEWNS(condition, tag, format...) ({ \
- int __ret = !!(condition); \
- if (__ret) { \
- printf("%s:FAIL:%s ", __func__, tag); \
- printf(format); \
- } else { \
- printf("%s:PASS:%s\n", __func__, tag); \
- } \
- __ret; \
-})
-
-struct bss {
- __u64 dev;
- __u64 ino;
- __u64 pid_tgid;
- __u64 user_pid_tgid;
-};
-
-int main(int argc, char **argv)
-{
- pid_t pid;
- int exit_code = 1;
- struct stat st;
-
- printf("Testing bpf_get_ns_current_pid_tgid helper in new ns\n");
-
- if (stat("/proc/self/ns/pid", &st)) {
- perror("stat failed on /proc/self/ns/pid ns\n");
- printf("%s:FAILED\n", argv[0]);
- return exit_code;
- }
-
- if (CHECK_NEWNS(unshare(CLONE_NEWPID | CLONE_NEWNS),
- "unshare CLONE_NEWPID | CLONE_NEWNS", "error errno=%d\n", errno))
- return exit_code;
-
- pid = fork();
- if (pid == -1) {
- perror("Fork() failed\n");
- printf("%s:FAILED\n", argv[0]);
- return exit_code;
- }
-
- if (pid > 0) {
- int status;
-
- usleep(5);
- waitpid(pid, &status, 0);
- return 0;
- } else {
-
- pid = fork();
- if (pid == -1) {
- perror("Fork() failed\n");
- printf("%s:FAILED\n", argv[0]);
- return exit_code;
- }
-
- if (pid > 0) {
- int status;
- waitpid(pid, &status, 0);
- return 0;
- } else {
- if (CHECK_NEWNS(mount("none", "/proc", NULL, MS_PRIVATE|MS_REC, NULL),
- "Unmounting proc", "Cannot umount proc! errno=%d\n", errno))
- return exit_code;
-
- if (CHECK_NEWNS(mount("proc", "/proc", "proc", MS_NOSUID|MS_NOEXEC|MS_NODEV, NULL),
- "Mounting proc", "Cannot mount proc! errno=%d\n", errno))
- return exit_code;
-
- const char *probe_name = "raw_tracepoint/sys_enter";
- const char *file = "test_ns_current_pid_tgid.o";
- struct bpf_link *link = NULL;
- struct bpf_program *prog;
- struct bpf_map *bss_map;
- struct bpf_object *obj;
- int exit_code = 1;
- int err, key = 0;
- struct bss bss;
- struct stat st;
- __u64 id;
-
- obj = bpf_object__open_file(file, NULL);
- if (CHECK_NEWNS(IS_ERR(obj), "obj_open", "err %ld\n", PTR_ERR(obj)))
- return exit_code;
-
- err = bpf_object__load(obj);
- if (CHECK_NEWNS(err, "obj_load", "err %d errno %d\n", err, errno))
- goto cleanup;
-
- bss_map = bpf_object__find_map_by_name(obj, "test_ns_.bss");
- if (CHECK_NEWNS(!bss_map, "find_bss_map", "failed\n"))
- goto cleanup;
-
- prog = bpf_object__find_program_by_title(obj, probe_name);
- if (CHECK_NEWNS(!prog, "find_prog", "prog '%s' not found\n",
- probe_name))
- goto cleanup;
-
- memset(&bss, 0, sizeof(bss));
- pid_t tid = syscall(SYS_gettid);
- pid_t pid = getpid();
-
- id = (__u64) tid << 32 | pid;
- bss.user_pid_tgid = id;
-
- if (CHECK_NEWNS(stat("/proc/self/ns/pid", &st),
- "stat new ns", "Failed to stat /proc/self/ns/pid errno=%d\n", errno))
- goto cleanup;
-
- bss.dev = st.st_dev;
- bss.ino = st.st_ino;
-
- err = bpf_map_update_elem(bpf_map__fd(bss_map), &key, &bss, 0);
- if (CHECK_NEWNS(err, "setting_bss", "failed to set bss : %d\n", err))
- goto cleanup;
-
- link = bpf_program__attach_raw_tracepoint(prog, "sys_enter");
- if (CHECK_NEWNS(IS_ERR(link), "attach_raw_tp", "err %ld\n",
- PTR_ERR(link))) {
- link = NULL;
- goto cleanup;
- }
-
- /* trigger some syscalls */
- usleep(1);
-
- err = bpf_map_lookup_elem(bpf_map__fd(bss_map), &key, &bss);
- if (CHECK_NEWNS(err, "set_bss", "failed to get bss : %d\n", err))
- goto cleanup;
-
- if (CHECK_NEWNS(id != bss.pid_tgid, "Compare user pid/tgid vs. bpf pid/tgid",
- "User pid/tgid %llu BPF pid/tgid %llu\n", id, bss.pid_tgid))
- goto cleanup;
-
- exit_code = 0;
- printf("%s:PASS\n", argv[0]);
-cleanup:
- if (!link) {
- bpf_link__destroy(link);
- link = NULL;
- }
- bpf_object__close(obj);
- }
- }
- return 0;
-}