diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/examples/bpf/5sec.c | 6 | ||||
| -rw-r--r-- | tools/testing/selftests/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/.gitignore | 8 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/Makefile | 7 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/clock_nanosleep.c | 149 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/config | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/exec.c | 94 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/gettime_perf.c | 95 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/log.h | 26 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/procfs.c | 144 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/timens.c | 190 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/timens.h | 100 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/timer.c | 122 | ||||
| -rw-r--r-- | tools/testing/selftests/timens/timerfd.c | 128 |
14 files changed, 1069 insertions, 2 deletions
diff --git a/tools/perf/examples/bpf/5sec.c b/tools/perf/examples/bpf/5sec.c index b9c203219691..e6b6181c6dc6 100644 --- a/tools/perf/examples/bpf/5sec.c +++ b/tools/perf/examples/bpf/5sec.c @@ -41,9 +41,11 @@ #include <bpf.h> -int probe(hrtimer_nanosleep, rqtp->tv_sec)(void *ctx, int err, long sec) +#define NSEC_PER_SEC 1000000000L + +int probe(hrtimer_nanosleep, rqtp)(void *ctx, int err, long long sec) { - return sec == 5; + return sec / NSEC_PER_SEC == 5ULL; } license(GPL); diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile index b001c602414b..c4939a2a5f5d 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -50,6 +50,7 @@ TARGETS += splice TARGETS += static_keys TARGETS += sync TARGETS += sysctl +TARGETS += timens ifneq (1, $(quicktest)) TARGETS += timers endif diff --git a/tools/testing/selftests/timens/.gitignore b/tools/testing/selftests/timens/.gitignore new file mode 100644 index 000000000000..789f21e81028 --- /dev/null +++ b/tools/testing/selftests/timens/.gitignore @@ -0,0 +1,8 @@ +clock_nanosleep +exec +gettime_perf +gettime_perf_cold +procfs +timens +timer +timerfd diff --git a/tools/testing/selftests/timens/Makefile b/tools/testing/selftests/timens/Makefile new file mode 100644 index 000000000000..e9fb30bd8aeb --- /dev/null +++ b/tools/testing/selftests/timens/Makefile @@ -0,0 +1,7 @@ +TEST_GEN_PROGS := timens timerfd timer clock_nanosleep procfs exec +TEST_GEN_PROGS_EXTENDED := gettime_perf + +CFLAGS := -Wall -Werror -pthread +LDFLAGS := -lrt -ldl + +include ../lib.mk diff --git a/tools/testing/selftests/timens/clock_nanosleep.c b/tools/testing/selftests/timens/clock_nanosleep.c new file mode 100644 index 000000000000..8e7b7c72ef65 --- /dev/null +++ b/tools/testing/selftests/timens/clock_nanosleep.c @@ -0,0 +1,149 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <sched.h> + +#include <sys/timerfd.h> +#include <sys/syscall.h> +#include <time.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> +#include <pthread.h> +#include <signal.h> +#include <string.h> + +#include "log.h" +#include "timens.h" + +void test_sig(int sig) +{ + if (sig == SIGUSR2) + pthread_exit(NULL); +} + +struct thread_args { + struct timespec *now, *rem; + pthread_mutex_t *lock; + int clockid; + int abs; +}; + +void *call_nanosleep(void *_args) +{ + struct thread_args *args = _args; + + clock_nanosleep(args->clockid, args->abs ? TIMER_ABSTIME : 0, args->now, args->rem); + pthread_mutex_unlock(args->lock); + return NULL; +} + +int run_test(int clockid, int abs) +{ + struct timespec now = {}, rem; + struct thread_args args = { .now = &now, .rem = &rem, .clockid = clockid}; + struct timespec start; + pthread_mutex_t lock; + pthread_t thread; + int j, ok, ret; + + signal(SIGUSR1, test_sig); + signal(SIGUSR2, test_sig); + + pthread_mutex_init(&lock, NULL); + pthread_mutex_lock(&lock); + + if (clock_gettime(clockid, &start) == -1) { + if (errno == EINVAL && check_skip(clockid)) + return 0; + return pr_perror("clock_gettime"); + } + + + if (abs) { + now.tv_sec = start.tv_sec; + now.tv_nsec = start.tv_nsec; + } + + now.tv_sec += 3600; + args.abs = abs; + args.lock = &lock; + ret = pthread_create(&thread, NULL, call_nanosleep, &args); + if (ret != 0) { + pr_err("Unable to create a thread: %s", strerror(ret)); + return 1; + } + + /* Wait when the thread will call clock_nanosleep(). */ + ok = 0; + for (j = 0; j < 8; j++) { + /* The maximum timeout is about 5 seconds. */ + usleep(10000 << j); + + /* Try to interrupt clock_nanosleep(). */ + pthread_kill(thread, SIGUSR1); + + usleep(10000 << j); + /* Check whether clock_nanosleep() has been interrupted or not. */ + if (pthread_mutex_trylock(&lock) == 0) { + /**/ + ok = 1; + break; + } + } + if (!ok) + pthread_kill(thread, SIGUSR2); + pthread_join(thread, NULL); + pthread_mutex_destroy(&lock); + + if (!ok) { + ksft_test_result_pass("clockid: %d abs:%d timeout\n", clockid, abs); + return 1; + } + + if (rem.tv_sec < 3300 || rem.tv_sec > 3900) { + pr_fail("clockid: %d abs: %d remain: %ld\n", + clockid, abs, rem.tv_sec); + return 1; + } + ksft_test_result_pass("clockid: %d abs:%d\n", clockid, abs); + + return 0; +} + +int main(int argc, char *argv[]) +{ + int ret, nsfd; + + nscheck(); + + ksft_set_plan(4); + + check_config_posix_timers(); + + if (unshare_timens()) + return 1; + + if (_settime(CLOCK_MONOTONIC, 7 * 24 * 3600)) + return 1; + if (_settime(CLOCK_BOOTTIME, 9 * 24 * 3600)) + return 1; + + nsfd = open("/proc/self/ns/time_for_children", O_RDONLY); + if (nsfd < 0) + return pr_perror("Unable to open timens_for_children"); + + if (setns(nsfd, CLONE_NEWTIME)) + return pr_perror("Unable to set timens"); + + ret = 0; + ret |= run_test(CLOCK_MONOTONIC, 0); + ret |= run_test(CLOCK_MONOTONIC, 1); + ret |= run_test(CLOCK_BOOTTIME_ALARM, 0); + ret |= run_test(CLOCK_BOOTTIME_ALARM, 1); + + if (ret) + ksft_exit_fail(); + ksft_exit_pass(); + return ret; +} diff --git a/tools/testing/selftests/timens/config b/tools/testing/selftests/timens/config new file mode 100644 index 000000000000..4480620f6f49 --- /dev/null +++ b/tools/testing/selftests/timens/config @@ -0,0 +1 @@ +CONFIG_TIME_NS=y diff --git a/tools/testing/selftests/timens/exec.c b/tools/testing/selftests/timens/exec.c new file mode 100644 index 000000000000..87b47b557a7a --- /dev/null +++ b/tools/testing/selftests/timens/exec.c @@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <errno.h> +#include <fcntl.h> +#include <sched.h> +#include <stdio.h> +#include <stdbool.h> +#include <sys/stat.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <time.h> +#include <unistd.h> +#include <time.h> +#include <string.h> + +#include "log.h" +#include "timens.h" + +#define OFFSET (36000) + +int main(int argc, char *argv[]) +{ + struct timespec now, tst; + int status, i; + pid_t pid; + + if (argc > 1) { + if (sscanf(argv[1], "%ld", &now.tv_sec) != 1) + return pr_perror("sscanf"); + + for (i = 0; i < 2; i++) { + _gettime(CLOCK_MONOTONIC, &tst, i); + if (abs(tst.tv_sec - now.tv_sec) > 5) + return pr_fail("%ld %ld\n", now.tv_sec, tst.tv_sec); + } + return 0; + } + + nscheck(); + + ksft_set_plan(1); + + clock_gettime(CLOCK_MONOTONIC, &now); + + if (unshare_timens()) + return 1; + + if (_settime(CLOCK_MONOTONIC, OFFSET)) + return 1; + + for (i = 0; i < 2; i++) { + _gettime(CLOCK_MONOTONIC, &tst, i); + if (abs(tst.tv_sec - now.tv_sec) > 5) + return pr_fail("%ld %ld\n", + now.tv_sec, tst.tv_sec); + } + + if (argc > 1) + return 0; + + pid = fork(); + if (pid < 0) + return pr_perror("fork"); + + if (pid == 0) { + char now_str[64]; + char *cargv[] = {"exec", now_str, NULL}; + char *cenv[] = {NULL}; + + /* Check that a child process is in the new timens. */ + for (i = 0; i < 2; i++) { + _gettime(CLOCK_MONOTONIC, &tst, i); + if (abs(tst.tv_sec - now.tv_sec - OFFSET) > 5) + return pr_fail("%ld %ld\n", + now.tv_sec + OFFSET, tst.tv_sec); + } + + /* Check for proper vvar offsets after execve. */ + snprintf(now_str, sizeof(now_str), "%ld", now.tv_sec + OFFSET); + execve("/proc/self/exe", cargv, cenv); + return pr_perror("execve"); + } + + if (waitpid(pid, &status, 0) != pid) + return pr_perror("waitpid"); + + if (status) + ksft_exit_fail(); + + ksft_test_result_pass("exec\n"); + ksft_exit_pass(); + return 0; +} diff --git a/tools/testing/selftests/timens/gettime_perf.c b/tools/testing/selftests/timens/gettime_perf.c new file mode 100644 index 000000000000..7bf841a3967b --- /dev/null +++ b/tools/testing/selftests/timens/gettime_perf.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <sys/types.h> +#include <sys/stat.h> +#include <errno.h> +#include <fcntl.h> +#include <sched.h> +#include <time.h> +#include <stdio.h> +#include <unistd.h> +#include <sys/syscall.h> +#include <dlfcn.h> + +#include "log.h" +#include "timens.h" + +typedef int (*vgettime_t)(clockid_t, struct timespec *); + +vgettime_t vdso_clock_gettime; + +static void fill_function_pointers(void) +{ + void *vdso = dlopen("linux-vdso.so.1", + RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD); + if (!vdso) + vdso = dlopen("linux-gate.so.1", + RTLD_LAZY | RTLD_LOCAL | RTLD_NOLOAD); + if (!vdso) { + pr_err("[WARN]\tfailed to find vDSO\n"); + return; + } + + vdso_clock_gettime = (vgettime_t)dlsym(vdso, "__vdso_clock_gettime"); + if (!vdso_clock_gettime) + pr_err("Warning: failed to find clock_gettime in vDSO\n"); + +} + +static void test(clock_t clockid, char *clockstr, bool in_ns) +{ + struct timespec tp, start; + long i = 0; + const int timeout = 3; + + vdso_clock_gettime(clockid, &start); + tp = start; + for (tp = start; start.tv_sec + timeout > tp.tv_sec || + (start.tv_sec + timeout == tp.tv_sec && + start.tv_nsec > tp.tv_nsec); i++) { + vdso_clock_gettime(clockid, &tp); + } + + ksft_test_result_pass("%s:\tclock: %10s\tcycles:\t%10ld\n", + in_ns ? "ns" : "host", clockstr, i); +} + +int main(int argc, char *argv[]) +{ + time_t offset = 10; + int nsfd; + + ksft_set_plan(8); + + fill_function_pointers(); + + test(CLOCK_MONOTONIC, "monotonic", false); + test(CLOCK_MONOTONIC_COARSE, "monotonic-coarse", false); + test(CLOCK_MONOTONIC_RAW, "monotonic-raw", false); + test(CLOCK_BOOTTIME, "boottime", false); + + nscheck(); + + if (unshare_timens()) + return 1; + + nsfd = open("/proc/self/ns/time_for_children", O_RDONLY); + if (nsfd < 0) + return pr_perror("Can't open a time namespace"); + + if (_settime(CLOCK_MONOTONIC, offset)) + return 1; + if (_settime(CLOCK_BOOTTIME, offset)) + return 1; + + if (setns(nsfd, CLONE_NEWTIME)) + return pr_perror("setns"); + + test(CLOCK_MONOTONIC, "monotonic", true); + test(CLOCK_MONOTONIC_COARSE, "monotonic-coarse", true); + test(CLOCK_MONOTONIC_RAW, "monotonic-raw", true); + test(CLOCK_BOOTTIME, "boottime", true); + + ksft_exit_pass(); + return 0; +} diff --git a/tools/testing/selftests/timens/log.h b/tools/testing/selftests/timens/log.h new file mode 100644 index 000000000000..db64df2a8483 --- /dev/null +++ b/tools/testing/selftests/timens/log.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __SELFTEST_TIMENS_LOG_H__ +#define __SELFTEST_TIMENS_LOG_H__ + +#define pr_msg(fmt, lvl, ...) \ + ksft_print_msg("[%s] (%s:%d)\t" fmt "\n", \ + lvl, __FILE__, __LINE__, ##__VA_ARGS__) + +#define pr_p(func, fmt, ...) func(fmt ": %m", ##__VA_ARGS__) + +#define pr_err(fmt, ...) \ + ({ \ + ksft_test_result_error(fmt "\n", ##__VA_ARGS__); \ + -1; \ + }) + +#define pr_fail(fmt, ...) \ + ({ \ + ksft_test_result_fail(fmt, ##__VA_ARGS__); \ + -1; \ + }) + +#define pr_perror(fmt, ...) pr_p(pr_err, fmt, ##__VA_ARGS__) + +#endif diff --git a/tools/testing/selftests/timens/procfs.c b/tools/testing/selftests/timens/procfs.c new file mode 100644 index 000000000000..43d93f4006b9 --- /dev/null +++ b/tools/testing/selftests/timens/procfs.c @@ -0,0 +1,144 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <errno.h> +#include <fcntl.h> +#include <math.h> +#include <sched.h> +#include <stdio.h> +#include <stdbool.h> +#include <stdlib.h> +#include <sys/stat.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <time.h> +#include <unistd.h> +#include <time.h> + +#include "log.h" +#include "timens.h" + +/* + * Test shouldn't be run for a day, so add 10 days to child + * time and check parent's time to be in the same day. + */ +#define MAX_TEST_TIME_SEC (60*5) +#define DAY_IN_SEC (60*60*24) +#define TEN_DAYS_IN_SEC (10*DAY_IN_SEC) + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +static int child_ns, parent_ns; + +static int switch_ns(int fd) +{ + if (setns(fd, CLONE_NEWTIME)) + return pr_perror("setns()"); + + return 0; +} + +static int init_namespaces(void) +{ + char path[] = "/proc/self/ns/time_for_children"; + struct stat st1, st2; + + parent_ns = open(path, O_RDONLY); + if (parent_ns <= 0) + return pr_perror("Unable to open %s", path); + + if (fstat(parent_ns, &st1)) + return pr_perror("Unable to stat the parent timens"); + + if (unshare_timens()) + return -1; + + child_ns = open(path, O_RDONLY); + if (child_ns <= 0) + return pr_perror("Unable to open %s", path); + + if (fstat(child_ns, &st2)) + return pr_perror("Unable to stat the timens"); + + if (st1.st_ino == st2.st_ino) + return pr_err("The same child_ns after CLONE_NEWTIME"); + + if (_settime(CLOCK_BOOTTIME, TEN_DAYS_IN_SEC)) + return -1; + + return 0; +} + +static int read_proc_uptime(struct timespec *uptime) +{ + unsigned long up_sec, up_nsec; + FILE *proc; + + proc = fopen("/proc/uptime", "r"); + if (proc == NULL) { + pr_perror("Unable to open /proc/uptime"); + return -1; + } + + if (fscanf(proc, "%lu.%02lu", &up_sec, &up_nsec) != 2) { + if (errno) { + pr_perror("fscanf"); + return -errno; + } + pr_err("failed to parse /proc/uptime"); + return -1; + } + fclose(proc); + + uptime->tv_sec = up_sec; + uptime->tv_nsec = up_nsec; + return 0; +} + +static int check_uptime(void) +{ + struct timespec uptime_new, uptime_old; + time_t uptime_expected; + double prec = MAX_TEST_TIME_SEC; + + if (switch_ns(parent_ns)) + return pr_err("switch_ns(%d)", parent_ns); + + if (read_proc_uptime(&uptime_old)) + return 1; + + if (switch_ns(child_ns)) + return pr_err("switch_ns(%d)", child_ns); + + if (read_proc_uptime(&uptime_new)) + return 1; + + uptime_expected = uptime_old.tv_sec + TEN_DAYS_IN_SEC; + if (fabs(difftime(uptime_new.tv_sec, uptime_expected)) > prec) { + pr_fail("uptime in /proc/uptime: old %ld, new %ld [%ld]", + uptime_old.tv_sec, uptime_new.tv_sec, + uptime_old.tv_sec + TEN_DAYS_IN_SEC); + return 1; + } + + ksft_test_result_pass("Passed for /proc/uptime\n"); + return 0; +} + +int main(int argc, char *argv[]) +{ + int ret = 0; + + nscheck(); + + ksft_set_plan(1); + + if (init_namespaces()) + return 1; + + ret |= check_uptime(); + + if (ret) + ksft_exit_fail(); + ksft_exit_pass(); + return ret; +} diff --git a/tools/testing/selftests/timens/timens.c b/tools/testing/selftests/timens/timens.c new file mode 100644 index 000000000000..559d26e21ba0 --- /dev/null +++ b/tools/testing/selftests/timens/timens.c @@ -0,0 +1,190 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <errno.h> +#include <fcntl.h> +#include <sched.h> +#include <stdio.h> +#include <stdbool.h> +#include <sys/stat.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <time.h> +#include <unistd.h> +#include <time.h> +#include <string.h> + +#include "log.h" +#include "timens.h" + +/* + * Test shouldn't be run for a day, so add 10 days to child + * time and check parent's time to be in the same day. + */ +#define DAY_IN_SEC (60*60*24) +#define TEN_DAYS_IN_SEC (10*DAY_IN_SEC) + +#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) + +struct test_clock { + clockid_t id; + char *name; + /* + * off_id is -1 if a clock has own offset, or it contains an index + * which contains a right offset of this clock. + */ + int off_id; + time_t offset; +}; + +#define ct(clock, off_id) { clock, #clock, off_id } +static struct test_clock clocks[] = { + ct(CLOCK_BOOTTIME, -1), + ct(CLOCK_BOOTTIME_ALARM, 1), + ct(CLOCK_MONOTONIC, -1), + ct(CLOCK_MONOTONIC_COARSE, 1), + ct(CLOCK_MONOTONIC_RAW, 1), +}; +#undef ct + +static int child_ns, parent_ns = -1; + +static int switch_ns(int fd) +{ + if (setns(fd, CLONE_NEWTIME)) { + pr_perror("setns()"); + return -1; + } + + return 0; +} + +static int init_namespaces(void) +{ + char path[] = "/proc/self/ns/time_for_children"; + struct stat st1, st2; + + if (parent_ns == -1) { + parent_ns = open(path, O_RDONLY); + if (parent_ns <= 0) + return pr_perror("Unable to open %s", path); + } + + if (fstat(parent_ns, &st1)) + return pr_perror("Unable to stat the parent timens"); + + if (unshare_timens()) + return -1; + + child_ns = open(path, O_RDONLY); + if (child_ns <= 0) + return pr_perror("Unable to open %s", path); + + if (fstat(child_ns, &st2)) + return pr_perror("Unable to stat the timens"); + + if (st1.st_ino == st2.st_ino) + return pr_perror("The same child_ns after CLONE_NEWTIME"); + + return 0; +} + +static int test_gettime(clockid_t clock_index, bool raw_syscall, time_t offset) +{ + struct timespec child_ts_new, parent_ts_old, cur_ts; + char *entry = raw_syscall ? "syscall" : "vdso"; + double precision = 0.0; + + if (check_skip(clocks[clock_index].id)) + return 0; + + switch (clocks[clock_index].id) { + case CLOCK_MONOTONIC_COARSE: + case CLOCK_MONOTONIC_RAW: + precision = -2.0; + break; + } + + if (switch_ns(parent_ns)) + return pr_err("switch_ns(%d)", child_ns); + + if (_gettime(clocks[clock_index].id, &parent_ts_old, raw_syscall)) + return -1; + + child_ts_new.tv_nsec = parent_ts_old.tv_nsec; + child_ts_new.tv_sec = parent_ts_old.tv_sec + offset; + + if (switch_ns(child_ns)) + return pr_err("switch_ns(%d)", child_ns); + + if (_gettime(clocks[clock_index].id, &cur_ts, raw_syscall)) + return -1; + + if (difftime(cur_ts.tv_sec, child_ts_new.tv_sec) < precision) { + ksft_test_result_fail( + "Child's %s (%s) time has not changed: %lu -> %lu [%lu]\n", + clocks[clock_index].name, entry, parent_ts_old.tv_sec, + child_ts_new.tv_sec, cur_ts.tv_sec); + return -1; + } + + if (switch_ns(parent_ns)) + return pr_err("switch_ns(%d)", parent_ns); + + if (_gettime(clocks[clock_index].id, &cur_ts, raw_syscall)) + return -1; + + if (difftime(cur_ts.tv_sec, parent_ts_old.tv_sec) > DAY_IN_SEC) { + ksft_test_result_fail( + "Parent's %s (%s) time has changed: %lu -> %lu [%lu]\n", + clocks[clock_index].name, entry, parent_ts_old.tv_sec, + child_ts_new.tv_sec, cur_ts.tv_sec); + /* Let's play nice and put it closer to original */ + clock_settime(clocks[clock_index].id, &cur_ts); + return -1; + } + + ksft_test_result_pass("Passed for %s (%s)\n", + clocks[clock_index].name, entry); + return 0; +} + +int main(int argc, char *argv[]) +{ + unsigned int i; + time_t offset; + int ret = 0; + + nscheck(); + + check_config_posix_timers(); + + ksft_set_plan(ARRAY_SIZE(clocks) * 2); + + if (init_namespaces()) + return 1; + + /* Offsets have to be set before tasks enter the namespace. */ + for (i = 0; i < ARRAY_SIZE(clocks); i++) { + if (clocks[i].off_id != -1) + continue; + offset = TEN_DAYS_IN_SEC + i * 1000; + clocks[i].offset = offset; + if (_settime(clocks[i].id, offset)) + return 1; + } + + for (i = 0; i < ARRAY_SIZE(clocks); i++) { + if (clocks[i].off_id != -1) + offset = clocks[clocks[i].off_id].offset; + else + offset = clocks[i].offset; + ret |= test_gettime(i, true, offset); + ret |= test_gettime(i, false, offset); + } + + if (ret) + ksft_exit_fail(); + + ksft_exit_pass(); + return !!ret; +} diff --git a/tools/testing/selftests/timens/timens.h b/tools/testing/selftests/timens/timens.h new file mode 100644 index 000000000000..e09e7e39bc52 --- /dev/null +++ b/tools/testing/selftests/timens/timens.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __TIMENS_H__ +#define __TIMENS_H__ + +#include <fcntl.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdbool.h> + +#include "../kselftest.h" + +#ifndef CLONE_NEWTIME +# define CLONE_NEWTIME 0x00000080 +#endif + +static int config_posix_timers = true; + +static inline void check_config_posix_timers(void) +{ + if (timer_create(-1, 0, 0) == -1 && errno == ENOSYS) + config_posix_timers = false; +} + +static inline bool check_skip(int clockid) +{ + if (config_posix_timers) + return false; + + switch (clockid) { + /* Only these clocks are supported without CONFIG_POSIX_TIMERS. */ + case CLOCK_BOOTTIME: + case CLOCK_MONOTONIC: + case CLOCK_REALTIME: + return false; + default: + ksft_test_result_skip("Posix Clocks & timers are not supported\n"); + return true; + } + + return false; +} + +static inline int unshare_timens(void) +{ + if (unshare(CLONE_NEWTIME)) { + if (errno == EPERM) + ksft_exit_skip("need to run as root\n"); + return pr_perror("Can't unshare() timens"); + } + return 0; +} + +static inline int _settime(clockid_t clk_id, time_t offset) +{ + int fd, len; + char buf[4096]; + + if (clk_id == CLOCK_MONOTONIC_COARSE || clk_id == CLOCK_MONOTONIC_RAW) + clk_id = CLOCK_MONOTONIC; + + len = snprintf(buf, sizeof(buf), "%d %ld 0", clk_id, offset); + + fd = open("/proc/self/timens_offsets", O_WRONLY); + if (fd < 0) + return pr_perror("/proc/self/timens_offsets"); + + if (write(fd, buf, len) != len) + return pr_perror("/proc/self/timens_offsets"); + + close(fd); + + return 0; +} + +static inline int _gettime(clockid_t clk_id, struct timespec *res, bool raw_syscall) +{ + int err; + + if (!raw_syscall) { + if (clock_gettime(clk_id, res)) { + pr_perror("clock_gettime(%d)", (int)clk_id); + return -1; + } + return 0; + } + + err = syscall(SYS_clock_gettime, clk_id, res); + if (err) + pr_perror("syscall(SYS_clock_gettime(%d))", (int)clk_id); + + return err; +} + +static inline void nscheck(void) +{ + if (access("/proc/self/ns/time", F_OK) < 0) + ksft_exit_skip("Time namespaces are not supported\n"); +} + +#endif diff --git a/tools/testing/selftests/timens/timer.c b/tools/testing/selftests/timens/timer.c new file mode 100644 index 000000000000..0cca7aafc4bd --- /dev/null +++ b/tools/testing/selftests/timens/timer.c @@ -0,0 +1,122 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <sched.h> + +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <time.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> +#include <signal.h> +#include <time.h> + +#include "log.h" +#include "timens.h" + +int run_test(int clockid, struct timespec now) +{ + struct itimerspec new_value; + long long elapsed; + timer_t fd; + int i; + + for (i = 0; i < 2; i++) { + struct sigevent sevp = {.sigev_notify = SIGEV_NONE}; + int flags = 0; + + new_value.it_value.tv_sec = 3600; + new_value.it_value.tv_nsec = 0; + new_value.it_interval.tv_sec = 1; + new_value.it_interval.tv_nsec = 0; + + if (i == 1) { + new_value.it_value.tv_sec += now.tv_sec; + new_value.it_value.tv_nsec += now.tv_nsec; + } + + if (timer_create(clockid, &sevp, &fd) == -1) { + if (errno == ENOSYS) { + ksft_test_result_skip("Posix Clocks & timers are supported\n"); + return 0; + } + return pr_perror("timerfd_create"); + } + + if (i == 1) + flags |= TIMER_ABSTIME; + if (timer_settime(fd, flags, &new_value, NULL) == -1) + return pr_perror("timerfd_settime"); + + if (timer_gettime(fd, &new_value) == -1) + return pr_perror("timerfd_gettime"); + + elapsed = new_value.it_value.tv_sec; + if (abs(elapsed - 3600) > 60) { + ksft_test_result_fail("clockid: %d elapsed: %lld\n", + clockid, elapsed); + return 1; + } + } + + ksft_test_result_pass("clockid=%d\n", clockid); + + return 0; +} + +int main(int argc, char *argv[]) +{ + int ret, status, len, fd; + char buf[4096]; + pid_t pid; + struct timespec btime_now, mtime_now; + + nscheck(); + + ksft_set_plan(3); + + clock_gettime(CLOCK_MONOTONIC, &mtime_now); + clock_gettime(CLOCK_BOOTTIME, &btime_now); + + if (unshare_timens()) + return 1; + + len = snprintf(buf, sizeof(buf), "%d %d 0\n%d %d 0", + CLOCK_MONOTONIC, 70 * 24 * 3600, + CLOCK_BOOTTIME, 9 * 24 * 3600); + fd = open("/proc/self/timens_offsets", O_WRONLY); + if (fd < 0) + return pr_perror("/proc/self/timens_offsets"); + + if (write(fd, buf, len) != len) + return pr_perror("/proc/self/timens_offsets"); + + close(fd); + mtime_now.tv_sec += 70 * 24 * 3600; + btime_now.tv_sec += 9 * 24 * 3600; + + pid = fork(); + if (pid < 0) + return pr_perror("Unable to fork"); + if (pid == 0) { + ret = 0; + ret |= run_test(CLOCK_BOOTTIME, btime_now); + ret |= run_test(CLOCK_MONOTONIC, mtime_now); + ret |= run_test(CLOCK_BOOTTIME_ALARM, btime_now); + + if (ret) + ksft_exit_fail(); + ksft_exit_pass(); + return ret; + } + + if (waitpid(pid, &status, 0) != pid) + return pr_perror("Unable to wait the child process"); + + if (WIFEXITED(status)) + return WEXITSTATUS(status); + + return 1; +} diff --git a/tools/testing/selftests/timens/timerfd.c b/tools/testing/selftests/timens/timerfd.c new file mode 100644 index 000000000000..eff1ec5ff215 --- /dev/null +++ b/tools/testing/selftests/timens/timerfd.c @@ -0,0 +1,128 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#include <sched.h> + +#include <sys/timerfd.h> +#include <sys/syscall.h> +#include <sys/types.h> +#include <sys/wait.h> +#include <time.h> +#include <unistd.h> +#include <stdlib.h> +#include <stdio.h> +#include <stdint.h> + +#include "log.h" +#include "timens.h" + +static int tclock_gettime(clock_t clockid, struct timespec *now) +{ + if (clockid == CLOCK_BOOTTIME_ALARM) + clockid = CLOCK_BOOTTIME; + return clock_gettime(clockid, now); +} + +int run_test(int clockid, struct timespec now) +{ + struct itimerspec new_value; + long long elapsed; + int fd, i; + + if (tclock_gettime(clockid, &now)) + return pr_perror("clock_gettime(%d)", clockid); + + for (i = 0; i < 2; i++) { + int flags = 0; + + new_value.it_value.tv_sec = 3600; + new_value.it_value.tv_nsec = 0; + new_value.it_interval.tv_sec = 1; + new_value.it_interval.tv_nsec = 0; + + if (i == 1) { + new_value.it_value.tv_sec += now.tv_sec; + new_value.it_value.tv_nsec += now.tv_nsec; + } + + fd = timerfd_create(clockid, 0); + if (fd == -1) + return pr_perror("timerfd_create(%d)", clockid); + + if (i == 1) + flags |= TFD_TIMER_ABSTIME; + + if (timerfd_settime(fd, flags, &new_value, NULL)) + return pr_perror("timerfd_settime(%d)", clockid); + + if (timerfd_gettime(fd, &new_value)) + return pr_perror("timerfd_gettime(%d)", clockid); + + elapsed = new_value.it_value.tv_sec; + if (abs(elapsed - 3600) > 60) { + ksft_test_result_fail("clockid: %d elapsed: %lld\n", + clockid, elapsed); + return 1; + } + + close(fd); + } + + ksft_test_result_pass("clockid=%d\n", clockid); + + return 0; +} + +int main(int argc, char *argv[]) +{ + int ret, status, len, fd; + char buf[4096]; + pid_t pid; + struct timespec btime_now, mtime_now; + + nscheck(); + + ksft_set_plan(3); + + clock_gettime(CLOCK_MONOTONIC, &mtime_now); + clock_gettime(CLOCK_BOOTTIME, &btime_now); + + if (unshare_timens()) + return 1; + + len = snprintf(buf, sizeof(buf), "%d %d 0\n%d %d 0", + CLOCK_MONOTONIC, 70 * 24 * 3600, + CLOCK_BOOTTIME, 9 * 24 * 3600); + fd = open("/proc/self/timens_offsets", O_WRONLY); + if (fd < 0) + return pr_perror("/proc/self/timens_offsets"); + + if (write(fd, buf, len) != len) + return pr_perror("/proc/self/timens_offsets"); + + close(fd); + mtime_now.tv_sec += 70 * 24 * 3600; + btime_now.tv_sec += 9 * 24 * 3600; + + pid = fork(); + if (pid < 0) + return pr_perror("Unable to fork"); + if (pid == 0) { + ret = 0; + ret |= run_test(CLOCK_BOOTTIME, btime_now); + ret |= run_test(CLOCK_MONOTONIC, mtime_now); + ret |= run_test(CLOCK_BOOTTIME_ALARM, btime_now); + + if (ret) + ksft_exit_fail(); + ksft_exit_pass(); + return ret; + } + + if (waitpid(pid, &status, 0) != pid) + return pr_perror("Unable to wait the child process"); + + if (WIFEXITED(status)) + return WEXITSTATUS(status); + + return 1; +} |