From: Vincenzo Frascino Date: Mon, 26 Oct 2020 11:49:44 +0000 (+0000) Subject: kselftest: Move test_vdso to the vDSO test suite X-Git-Tag: v5.15.73~13012^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c7e5789b24d36dd5dddd36ea2b99280a606cac42;p=platform%2Fkernel%2Flinux-rpi.git kselftest: Move test_vdso to the vDSO test suite Move test_vdso from x86 to the vDSO test suite. Suggested-by: Andy Lutomirski Cc: Shuah Khan Signed-off-by: Vincenzo Frascino Acked-by: Thomas Gleixner Signed-off-by: Shuah Khan --- diff --git a/tools/testing/selftests/vDSO/Makefile b/tools/testing/selftests/vDSO/Makefile index 375d80c2bff5..d53a4d8008f9 100644 --- a/tools/testing/selftests/vDSO/Makefile +++ b/tools/testing/selftests/vDSO/Makefile @@ -7,12 +7,14 @@ ARCH ?= $(shell echo $(uname_M) | sed -e s/i.86/x86/ -e s/x86_64/x86/) TEST_GEN_PROGS := $(OUTPUT)/vdso_test_gettimeofday $(OUTPUT)/vdso_test_getcpu TEST_GEN_PROGS += $(OUTPUT)/vdso_test_abi TEST_GEN_PROGS += $(OUTPUT)/vdso_test_clock_getres -ifeq ($(ARCH),x86) +ifeq ($(ARCH),$(filter $(ARCH),x86 x86_64)) TEST_GEN_PROGS += $(OUTPUT)/vdso_standalone_test_x86 endif +TEST_GEN_PROGS += $(OUTPUT)/vdso_test_correctness CFLAGS := -std=gnu99 CFLAGS_vdso_standalone_test_x86 := -nostdlib -fno-asynchronous-unwind-tables -fno-stack-protector +LDFLAGS_vdso_test_correctness := -ldl ifeq ($(CONFIG_X86_32),y) LDLIBS += -lgcc_s endif @@ -26,4 +28,8 @@ $(OUTPUT)/vdso_standalone_test_x86: vdso_standalone_test_x86.c parse_vdso.c $(CC) $(CFLAGS) $(CFLAGS_vdso_standalone_test_x86) \ vdso_standalone_test_x86.c parse_vdso.c \ -o $@ - +$(OUTPUT)/vdso_test_correctness: vdso_test_correctness.c + $(CC) $(CFLAGS) \ + vdso_test_correctness.c \ + -o $@ \ + $(LDFLAGS_vdso_test_correctness) diff --git a/tools/testing/selftests/vDSO/vdso_test_correctness.c b/tools/testing/selftests/vDSO/vdso_test_correctness.c new file mode 100644 index 000000000000..42052db0f870 --- /dev/null +++ b/tools/testing/selftests/vDSO/vdso_test_correctness.c @@ -0,0 +1,342 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ldt_gdt.c - Test cases for LDT and GDT access + * Copyright (c) 2011-2015 Andrew Lutomirski + */ + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#ifndef SYS_getcpu +# ifdef __x86_64__ +# define SYS_getcpu 309 +# else +# define SYS_getcpu 318 +# endif +#endif + +/* max length of lines in /proc/self/maps - anything longer is skipped here */ +#define MAPS_LINE_LEN 128 + +int nerrs = 0; + +typedef int (*vgettime_t)(clockid_t, struct timespec *); + +vgettime_t vdso_clock_gettime; + +typedef long (*vgtod_t)(struct timeval *tv, struct timezone *tz); + +vgtod_t vdso_gettimeofday; + +typedef long (*getcpu_t)(unsigned *, unsigned *, void *); + +getcpu_t vgetcpu; +getcpu_t vdso_getcpu; + +static void *vsyscall_getcpu(void) +{ +#ifdef __x86_64__ + FILE *maps; + char line[MAPS_LINE_LEN]; + bool found = false; + + maps = fopen("/proc/self/maps", "r"); + if (!maps) /* might still be present, but ignore it here, as we test vDSO not vsyscall */ + return NULL; + + while (fgets(line, MAPS_LINE_LEN, maps)) { + char r, x; + void *start, *end; + char name[MAPS_LINE_LEN]; + + /* sscanf() is safe here as strlen(name) >= strlen(line) */ + if (sscanf(line, "%p-%p %c-%cp %*x %*x:%*x %*u %s", + &start, &end, &r, &x, name) != 5) + continue; + + if (strcmp(name, "[vsyscall]")) + continue; + + /* assume entries are OK, as we test vDSO here not vsyscall */ + found = true; + break; + } + + fclose(maps); + + if (!found) { + printf("Warning: failed to find vsyscall getcpu\n"); + return NULL; + } + return (void *) (0xffffffffff600800); +#else + return NULL; +#endif +} + + +static void fill_function_pointers() +{ + 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) { + printf("[WARN]\tfailed to find vDSO\n"); + return; + } + + vdso_getcpu = (getcpu_t)dlsym(vdso, "__vdso_getcpu"); + if (!vdso_getcpu) + printf("Warning: failed to find getcpu in vDSO\n"); + + vgetcpu = (getcpu_t) vsyscall_getcpu(); + + vdso_clock_gettime = (vgettime_t)dlsym(vdso, "__vdso_clock_gettime"); + if (!vdso_clock_gettime) + printf("Warning: failed to find clock_gettime in vDSO\n"); + + vdso_gettimeofday = (vgtod_t)dlsym(vdso, "__vdso_gettimeofday"); + if (!vdso_gettimeofday) + printf("Warning: failed to find gettimeofday in vDSO\n"); + +} + +static long sys_getcpu(unsigned * cpu, unsigned * node, + void* cache) +{ + return syscall(__NR_getcpu, cpu, node, cache); +} + +static inline int sys_clock_gettime(clockid_t id, struct timespec *ts) +{ + return syscall(__NR_clock_gettime, id, ts); +} + +static inline int sys_gettimeofday(struct timeval *tv, struct timezone *tz) +{ + return syscall(__NR_gettimeofday, tv, tz); +} + +static void test_getcpu(void) +{ + printf("[RUN]\tTesting getcpu...\n"); + + for (int cpu = 0; ; cpu++) { + cpu_set_t cpuset; + CPU_ZERO(&cpuset); + CPU_SET(cpu, &cpuset); + if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0) + return; + + unsigned cpu_sys, cpu_vdso, cpu_vsys, + node_sys, node_vdso, node_vsys; + long ret_sys, ret_vdso = 1, ret_vsys = 1; + unsigned node; + + ret_sys = sys_getcpu(&cpu_sys, &node_sys, 0); + if (vdso_getcpu) + ret_vdso = vdso_getcpu(&cpu_vdso, &node_vdso, 0); + if (vgetcpu) + ret_vsys = vgetcpu(&cpu_vsys, &node_vsys, 0); + + if (!ret_sys) + node = node_sys; + else if (!ret_vdso) + node = node_vdso; + else if (!ret_vsys) + node = node_vsys; + + bool ok = true; + if (!ret_sys && (cpu_sys != cpu || node_sys != node)) + ok = false; + if (!ret_vdso && (cpu_vdso != cpu || node_vdso != node)) + ok = false; + if (!ret_vsys && (cpu_vsys != cpu || node_vsys != node)) + ok = false; + + printf("[%s]\tCPU %u:", ok ? "OK" : "FAIL", cpu); + if (!ret_sys) + printf(" syscall: cpu %u, node %u", cpu_sys, node_sys); + if (!ret_vdso) + printf(" vdso: cpu %u, node %u", cpu_vdso, node_vdso); + if (!ret_vsys) + printf(" vsyscall: cpu %u, node %u", cpu_vsys, + node_vsys); + printf("\n"); + + if (!ok) + nerrs++; + } +} + +static bool ts_leq(const struct timespec *a, const struct timespec *b) +{ + if (a->tv_sec != b->tv_sec) + return a->tv_sec < b->tv_sec; + else + return a->tv_nsec <= b->tv_nsec; +} + +static bool tv_leq(const struct timeval *a, const struct timeval *b) +{ + if (a->tv_sec != b->tv_sec) + return a->tv_sec < b->tv_sec; + else + return a->tv_usec <= b->tv_usec; +} + +static char const * const clocknames[] = { + [0] = "CLOCK_REALTIME", + [1] = "CLOCK_MONOTONIC", + [2] = "CLOCK_PROCESS_CPUTIME_ID", + [3] = "CLOCK_THREAD_CPUTIME_ID", + [4] = "CLOCK_MONOTONIC_RAW", + [5] = "CLOCK_REALTIME_COARSE", + [6] = "CLOCK_MONOTONIC_COARSE", + [7] = "CLOCK_BOOTTIME", + [8] = "CLOCK_REALTIME_ALARM", + [9] = "CLOCK_BOOTTIME_ALARM", + [10] = "CLOCK_SGI_CYCLE", + [11] = "CLOCK_TAI", +}; + +static void test_one_clock_gettime(int clock, const char *name) +{ + struct timespec start, vdso, end; + int vdso_ret, end_ret; + + printf("[RUN]\tTesting clock_gettime for clock %s (%d)...\n", name, clock); + + if (sys_clock_gettime(clock, &start) < 0) { + if (errno == EINVAL) { + vdso_ret = vdso_clock_gettime(clock, &vdso); + if (vdso_ret == -EINVAL) { + printf("[OK]\tNo such clock.\n"); + } else { + printf("[FAIL]\tNo such clock, but __vdso_clock_gettime returned %d\n", vdso_ret); + nerrs++; + } + } else { + printf("[WARN]\t clock_gettime(%d) syscall returned error %d\n", clock, errno); + } + return; + } + + vdso_ret = vdso_clock_gettime(clock, &vdso); + end_ret = sys_clock_gettime(clock, &end); + + if (vdso_ret != 0 || end_ret != 0) { + printf("[FAIL]\tvDSO returned %d, syscall errno=%d\n", + vdso_ret, errno); + nerrs++; + return; + } + + printf("\t%llu.%09ld %llu.%09ld %llu.%09ld\n", + (unsigned long long)start.tv_sec, start.tv_nsec, + (unsigned long long)vdso.tv_sec, vdso.tv_nsec, + (unsigned long long)end.tv_sec, end.tv_nsec); + + if (!ts_leq(&start, &vdso) || !ts_leq(&vdso, &end)) { + printf("[FAIL]\tTimes are out of sequence\n"); + nerrs++; + } +} + +static void test_clock_gettime(void) +{ + if (!vdso_clock_gettime) { + printf("[SKIP]\tNo vDSO, so skipping clock_gettime() tests\n"); + return; + } + + for (int clock = 0; clock < sizeof(clocknames) / sizeof(clocknames[0]); + clock++) { + test_one_clock_gettime(clock, clocknames[clock]); + } + + /* Also test some invalid clock ids */ + test_one_clock_gettime(-1, "invalid"); + test_one_clock_gettime(INT_MIN, "invalid"); + test_one_clock_gettime(INT_MAX, "invalid"); +} + +static void test_gettimeofday(void) +{ + struct timeval start, vdso, end; + struct timezone sys_tz, vdso_tz; + int vdso_ret, end_ret; + + if (!vdso_gettimeofday) + return; + + printf("[RUN]\tTesting gettimeofday...\n"); + + if (sys_gettimeofday(&start, &sys_tz) < 0) { + printf("[FAIL]\tsys_gettimeofday failed (%d)\n", errno); + nerrs++; + return; + } + + vdso_ret = vdso_gettimeofday(&vdso, &vdso_tz); + end_ret = sys_gettimeofday(&end, NULL); + + if (vdso_ret != 0 || end_ret != 0) { + printf("[FAIL]\tvDSO returned %d, syscall errno=%d\n", + vdso_ret, errno); + nerrs++; + return; + } + + printf("\t%llu.%06ld %llu.%06ld %llu.%06ld\n", + (unsigned long long)start.tv_sec, start.tv_usec, + (unsigned long long)vdso.tv_sec, vdso.tv_usec, + (unsigned long long)end.tv_sec, end.tv_usec); + + if (!tv_leq(&start, &vdso) || !tv_leq(&vdso, &end)) { + printf("[FAIL]\tTimes are out of sequence\n"); + nerrs++; + } + + if (sys_tz.tz_minuteswest == vdso_tz.tz_minuteswest && + sys_tz.tz_dsttime == vdso_tz.tz_dsttime) { + printf("[OK]\ttimezones match: minuteswest=%d, dsttime=%d\n", + sys_tz.tz_minuteswest, sys_tz.tz_dsttime); + } else { + printf("[FAIL]\ttimezones do not match\n"); + nerrs++; + } + + /* And make sure that passing NULL for tz doesn't crash. */ + vdso_gettimeofday(&vdso, NULL); +} + +int main(int argc, char **argv) +{ + fill_function_pointers(); + + test_clock_gettime(); + test_gettimeofday(); + + /* + * Test getcpu() last so that, if something goes wrong setting affinity, + * we still run the other tests. + */ + test_getcpu(); + + return nerrs ? 1 : 0; +} diff --git a/tools/testing/selftests/x86/Makefile b/tools/testing/selftests/x86/Makefile index 6703c7906b71..333980375bc7 100644 --- a/tools/testing/selftests/x86/Makefile +++ b/tools/testing/selftests/x86/Makefile @@ -12,7 +12,7 @@ CAN_BUILD_WITH_NOPIE := $(shell ./check_cc.sh $(CC) trivial_program.c -no-pie) TARGETS_C_BOTHBITS := single_step_syscall sysret_ss_attrs syscall_nt test_mremap_vdso \ check_initial_reg_state sigreturn iopl ioperm \ - test_vdso test_vsyscall mov_ss_trap \ + test_vsyscall mov_ss_trap \ syscall_arg_fault fsgsbase_restore TARGETS_C_32BIT_ONLY := entry_from_vm86 test_syscall_vdso unwind_vdso \ test_FCMOV test_FCOMI test_FISTTP \ diff --git a/tools/testing/selftests/x86/test_vdso.c b/tools/testing/selftests/x86/test_vdso.c deleted file mode 100644 index 42052db0f870..000000000000 --- a/tools/testing/selftests/x86/test_vdso.c +++ /dev/null @@ -1,342 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * ldt_gdt.c - Test cases for LDT and GDT access - * Copyright (c) 2011-2015 Andrew Lutomirski - */ - -#define _GNU_SOURCE - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#ifndef SYS_getcpu -# ifdef __x86_64__ -# define SYS_getcpu 309 -# else -# define SYS_getcpu 318 -# endif -#endif - -/* max length of lines in /proc/self/maps - anything longer is skipped here */ -#define MAPS_LINE_LEN 128 - -int nerrs = 0; - -typedef int (*vgettime_t)(clockid_t, struct timespec *); - -vgettime_t vdso_clock_gettime; - -typedef long (*vgtod_t)(struct timeval *tv, struct timezone *tz); - -vgtod_t vdso_gettimeofday; - -typedef long (*getcpu_t)(unsigned *, unsigned *, void *); - -getcpu_t vgetcpu; -getcpu_t vdso_getcpu; - -static void *vsyscall_getcpu(void) -{ -#ifdef __x86_64__ - FILE *maps; - char line[MAPS_LINE_LEN]; - bool found = false; - - maps = fopen("/proc/self/maps", "r"); - if (!maps) /* might still be present, but ignore it here, as we test vDSO not vsyscall */ - return NULL; - - while (fgets(line, MAPS_LINE_LEN, maps)) { - char r, x; - void *start, *end; - char name[MAPS_LINE_LEN]; - - /* sscanf() is safe here as strlen(name) >= strlen(line) */ - if (sscanf(line, "%p-%p %c-%cp %*x %*x:%*x %*u %s", - &start, &end, &r, &x, name) != 5) - continue; - - if (strcmp(name, "[vsyscall]")) - continue; - - /* assume entries are OK, as we test vDSO here not vsyscall */ - found = true; - break; - } - - fclose(maps); - - if (!found) { - printf("Warning: failed to find vsyscall getcpu\n"); - return NULL; - } - return (void *) (0xffffffffff600800); -#else - return NULL; -#endif -} - - -static void fill_function_pointers() -{ - 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) { - printf("[WARN]\tfailed to find vDSO\n"); - return; - } - - vdso_getcpu = (getcpu_t)dlsym(vdso, "__vdso_getcpu"); - if (!vdso_getcpu) - printf("Warning: failed to find getcpu in vDSO\n"); - - vgetcpu = (getcpu_t) vsyscall_getcpu(); - - vdso_clock_gettime = (vgettime_t)dlsym(vdso, "__vdso_clock_gettime"); - if (!vdso_clock_gettime) - printf("Warning: failed to find clock_gettime in vDSO\n"); - - vdso_gettimeofday = (vgtod_t)dlsym(vdso, "__vdso_gettimeofday"); - if (!vdso_gettimeofday) - printf("Warning: failed to find gettimeofday in vDSO\n"); - -} - -static long sys_getcpu(unsigned * cpu, unsigned * node, - void* cache) -{ - return syscall(__NR_getcpu, cpu, node, cache); -} - -static inline int sys_clock_gettime(clockid_t id, struct timespec *ts) -{ - return syscall(__NR_clock_gettime, id, ts); -} - -static inline int sys_gettimeofday(struct timeval *tv, struct timezone *tz) -{ - return syscall(__NR_gettimeofday, tv, tz); -} - -static void test_getcpu(void) -{ - printf("[RUN]\tTesting getcpu...\n"); - - for (int cpu = 0; ; cpu++) { - cpu_set_t cpuset; - CPU_ZERO(&cpuset); - CPU_SET(cpu, &cpuset); - if (sched_setaffinity(0, sizeof(cpuset), &cpuset) != 0) - return; - - unsigned cpu_sys, cpu_vdso, cpu_vsys, - node_sys, node_vdso, node_vsys; - long ret_sys, ret_vdso = 1, ret_vsys = 1; - unsigned node; - - ret_sys = sys_getcpu(&cpu_sys, &node_sys, 0); - if (vdso_getcpu) - ret_vdso = vdso_getcpu(&cpu_vdso, &node_vdso, 0); - if (vgetcpu) - ret_vsys = vgetcpu(&cpu_vsys, &node_vsys, 0); - - if (!ret_sys) - node = node_sys; - else if (!ret_vdso) - node = node_vdso; - else if (!ret_vsys) - node = node_vsys; - - bool ok = true; - if (!ret_sys && (cpu_sys != cpu || node_sys != node)) - ok = false; - if (!ret_vdso && (cpu_vdso != cpu || node_vdso != node)) - ok = false; - if (!ret_vsys && (cpu_vsys != cpu || node_vsys != node)) - ok = false; - - printf("[%s]\tCPU %u:", ok ? "OK" : "FAIL", cpu); - if (!ret_sys) - printf(" syscall: cpu %u, node %u", cpu_sys, node_sys); - if (!ret_vdso) - printf(" vdso: cpu %u, node %u", cpu_vdso, node_vdso); - if (!ret_vsys) - printf(" vsyscall: cpu %u, node %u", cpu_vsys, - node_vsys); - printf("\n"); - - if (!ok) - nerrs++; - } -} - -static bool ts_leq(const struct timespec *a, const struct timespec *b) -{ - if (a->tv_sec != b->tv_sec) - return a->tv_sec < b->tv_sec; - else - return a->tv_nsec <= b->tv_nsec; -} - -static bool tv_leq(const struct timeval *a, const struct timeval *b) -{ - if (a->tv_sec != b->tv_sec) - return a->tv_sec < b->tv_sec; - else - return a->tv_usec <= b->tv_usec; -} - -static char const * const clocknames[] = { - [0] = "CLOCK_REALTIME", - [1] = "CLOCK_MONOTONIC", - [2] = "CLOCK_PROCESS_CPUTIME_ID", - [3] = "CLOCK_THREAD_CPUTIME_ID", - [4] = "CLOCK_MONOTONIC_RAW", - [5] = "CLOCK_REALTIME_COARSE", - [6] = "CLOCK_MONOTONIC_COARSE", - [7] = "CLOCK_BOOTTIME", - [8] = "CLOCK_REALTIME_ALARM", - [9] = "CLOCK_BOOTTIME_ALARM", - [10] = "CLOCK_SGI_CYCLE", - [11] = "CLOCK_TAI", -}; - -static void test_one_clock_gettime(int clock, const char *name) -{ - struct timespec start, vdso, end; - int vdso_ret, end_ret; - - printf("[RUN]\tTesting clock_gettime for clock %s (%d)...\n", name, clock); - - if (sys_clock_gettime(clock, &start) < 0) { - if (errno == EINVAL) { - vdso_ret = vdso_clock_gettime(clock, &vdso); - if (vdso_ret == -EINVAL) { - printf("[OK]\tNo such clock.\n"); - } else { - printf("[FAIL]\tNo such clock, but __vdso_clock_gettime returned %d\n", vdso_ret); - nerrs++; - } - } else { - printf("[WARN]\t clock_gettime(%d) syscall returned error %d\n", clock, errno); - } - return; - } - - vdso_ret = vdso_clock_gettime(clock, &vdso); - end_ret = sys_clock_gettime(clock, &end); - - if (vdso_ret != 0 || end_ret != 0) { - printf("[FAIL]\tvDSO returned %d, syscall errno=%d\n", - vdso_ret, errno); - nerrs++; - return; - } - - printf("\t%llu.%09ld %llu.%09ld %llu.%09ld\n", - (unsigned long long)start.tv_sec, start.tv_nsec, - (unsigned long long)vdso.tv_sec, vdso.tv_nsec, - (unsigned long long)end.tv_sec, end.tv_nsec); - - if (!ts_leq(&start, &vdso) || !ts_leq(&vdso, &end)) { - printf("[FAIL]\tTimes are out of sequence\n"); - nerrs++; - } -} - -static void test_clock_gettime(void) -{ - if (!vdso_clock_gettime) { - printf("[SKIP]\tNo vDSO, so skipping clock_gettime() tests\n"); - return; - } - - for (int clock = 0; clock < sizeof(clocknames) / sizeof(clocknames[0]); - clock++) { - test_one_clock_gettime(clock, clocknames[clock]); - } - - /* Also test some invalid clock ids */ - test_one_clock_gettime(-1, "invalid"); - test_one_clock_gettime(INT_MIN, "invalid"); - test_one_clock_gettime(INT_MAX, "invalid"); -} - -static void test_gettimeofday(void) -{ - struct timeval start, vdso, end; - struct timezone sys_tz, vdso_tz; - int vdso_ret, end_ret; - - if (!vdso_gettimeofday) - return; - - printf("[RUN]\tTesting gettimeofday...\n"); - - if (sys_gettimeofday(&start, &sys_tz) < 0) { - printf("[FAIL]\tsys_gettimeofday failed (%d)\n", errno); - nerrs++; - return; - } - - vdso_ret = vdso_gettimeofday(&vdso, &vdso_tz); - end_ret = sys_gettimeofday(&end, NULL); - - if (vdso_ret != 0 || end_ret != 0) { - printf("[FAIL]\tvDSO returned %d, syscall errno=%d\n", - vdso_ret, errno); - nerrs++; - return; - } - - printf("\t%llu.%06ld %llu.%06ld %llu.%06ld\n", - (unsigned long long)start.tv_sec, start.tv_usec, - (unsigned long long)vdso.tv_sec, vdso.tv_usec, - (unsigned long long)end.tv_sec, end.tv_usec); - - if (!tv_leq(&start, &vdso) || !tv_leq(&vdso, &end)) { - printf("[FAIL]\tTimes are out of sequence\n"); - nerrs++; - } - - if (sys_tz.tz_minuteswest == vdso_tz.tz_minuteswest && - sys_tz.tz_dsttime == vdso_tz.tz_dsttime) { - printf("[OK]\ttimezones match: minuteswest=%d, dsttime=%d\n", - sys_tz.tz_minuteswest, sys_tz.tz_dsttime); - } else { - printf("[FAIL]\ttimezones do not match\n"); - nerrs++; - } - - /* And make sure that passing NULL for tz doesn't crash. */ - vdso_gettimeofday(&vdso, NULL); -} - -int main(int argc, char **argv) -{ - fill_function_pointers(); - - test_clock_gettime(); - test_gettimeofday(); - - /* - * Test getcpu() last so that, if something goes wrong setting affinity, - * we still run the other tests. - */ - test_getcpu(); - - return nerrs ? 1 : 0; -}