mirror of https://gitee.com/openkylin/linux.git
340 lines
6.5 KiB
C
340 lines
6.5 KiB
C
/* valid adjtimex test
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* by: John Stultz <john.stultz@linaro.org>
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* (C) Copyright Linaro 2015
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* Licensed under the GPLv2
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*
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* This test validates adjtimex interface with valid
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* and invalid test data.
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*
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* Usage: valid-adjtimex
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*
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* To build:
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* $ gcc valid-adjtimex.c -o valid-adjtimex -lrt
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#include <sys/time.h>
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#include <sys/timex.h>
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#include <string.h>
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#include <signal.h>
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#include <unistd.h>
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#ifdef KTEST
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#include "../kselftest.h"
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#else
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static inline int ksft_exit_pass(void)
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{
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exit(0);
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}
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static inline int ksft_exit_fail(void)
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{
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exit(1);
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}
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#endif
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#define NSEC_PER_SEC 1000000000LL
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#define USEC_PER_SEC 1000000LL
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#define ADJ_SETOFFSET 0x0100
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#include <sys/syscall.h>
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static int clock_adjtime(clockid_t id, struct timex *tx)
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{
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return syscall(__NR_clock_adjtime, id, tx);
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}
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/* clear NTP time_status & time_state */
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int clear_time_state(void)
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{
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struct timex tx;
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int ret;
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tx.modes = ADJ_STATUS;
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tx.status = 0;
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ret = adjtimex(&tx);
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return ret;
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}
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#define NUM_FREQ_VALID 32
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#define NUM_FREQ_OUTOFRANGE 4
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#define NUM_FREQ_INVALID 2
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long valid_freq[NUM_FREQ_VALID] = {
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-499<<16,
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-450<<16,
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-400<<16,
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-350<<16,
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-300<<16,
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-250<<16,
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-200<<16,
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-150<<16,
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-100<<16,
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-75<<16,
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-50<<16,
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-25<<16,
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-10<<16,
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-5<<16,
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-1<<16,
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-1000,
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1<<16,
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5<<16,
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10<<16,
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25<<16,
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50<<16,
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75<<16,
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100<<16,
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150<<16,
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200<<16,
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250<<16,
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300<<16,
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350<<16,
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400<<16,
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450<<16,
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499<<16,
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};
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long outofrange_freq[NUM_FREQ_OUTOFRANGE] = {
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-1000<<16,
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-550<<16,
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550<<16,
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1000<<16,
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};
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#define LONG_MAX (~0UL>>1)
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#define LONG_MIN (-LONG_MAX - 1)
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long invalid_freq[NUM_FREQ_INVALID] = {
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LONG_MAX,
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LONG_MIN,
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};
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int validate_freq(void)
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{
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struct timex tx;
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int ret, pass = 0;
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int i;
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clear_time_state();
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memset(&tx, 0, sizeof(struct timex));
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/* Set the leap second insert flag */
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printf("Testing ADJ_FREQ... ");
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for (i = 0; i < NUM_FREQ_VALID; i++) {
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tx.modes = ADJ_FREQUENCY;
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tx.freq = valid_freq[i];
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ret = adjtimex(&tx);
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if (ret < 0) {
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printf("[FAIL]\n");
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printf("Error: adjtimex(ADJ_FREQ, %ld - %ld ppm\n",
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valid_freq[i], valid_freq[i]>>16);
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pass = -1;
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goto out;
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}
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tx.modes = 0;
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ret = adjtimex(&tx);
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if (tx.freq != valid_freq[i]) {
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printf("Warning: freq value %ld not what we set it (%ld)!\n",
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tx.freq, valid_freq[i]);
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}
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}
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for (i = 0; i < NUM_FREQ_OUTOFRANGE; i++) {
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tx.modes = ADJ_FREQUENCY;
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tx.freq = outofrange_freq[i];
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ret = adjtimex(&tx);
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if (ret < 0) {
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printf("[FAIL]\n");
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printf("Error: adjtimex(ADJ_FREQ, %ld - %ld ppm\n",
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outofrange_freq[i], outofrange_freq[i]>>16);
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pass = -1;
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goto out;
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}
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tx.modes = 0;
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ret = adjtimex(&tx);
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if (tx.freq == outofrange_freq[i]) {
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printf("[FAIL]\n");
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printf("ERROR: out of range value %ld actually set!\n",
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tx.freq);
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pass = -1;
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goto out;
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}
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}
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if (sizeof(long) == 8) { /* this case only applies to 64bit systems */
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for (i = 0; i < NUM_FREQ_INVALID; i++) {
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tx.modes = ADJ_FREQUENCY;
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tx.freq = invalid_freq[i];
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ret = adjtimex(&tx);
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if (ret >= 0) {
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printf("[FAIL]\n");
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printf("Error: No failure on invalid ADJ_FREQUENCY %ld\n",
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invalid_freq[i]);
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pass = -1;
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goto out;
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}
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}
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}
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printf("[OK]\n");
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out:
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/* reset freq to zero */
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tx.modes = ADJ_FREQUENCY;
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tx.freq = 0;
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ret = adjtimex(&tx);
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return pass;
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}
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int set_offset(long long offset, int use_nano)
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{
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struct timex tmx = {};
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int ret;
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tmx.modes = ADJ_SETOFFSET;
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if (use_nano) {
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tmx.modes |= ADJ_NANO;
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tmx.time.tv_sec = offset / NSEC_PER_SEC;
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tmx.time.tv_usec = offset % NSEC_PER_SEC;
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if (offset < 0 && tmx.time.tv_usec) {
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tmx.time.tv_sec -= 1;
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tmx.time.tv_usec += NSEC_PER_SEC;
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}
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} else {
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tmx.time.tv_sec = offset / USEC_PER_SEC;
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tmx.time.tv_usec = offset % USEC_PER_SEC;
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if (offset < 0 && tmx.time.tv_usec) {
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tmx.time.tv_sec -= 1;
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tmx.time.tv_usec += USEC_PER_SEC;
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}
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}
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ret = clock_adjtime(CLOCK_REALTIME, &tmx);
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if (ret < 0) {
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printf("(sec: %ld usec: %ld) ", tmx.time.tv_sec, tmx.time.tv_usec);
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printf("[FAIL]\n");
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return -1;
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}
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return 0;
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}
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int set_bad_offset(long sec, long usec, int use_nano)
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{
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struct timex tmx = {};
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int ret;
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tmx.modes = ADJ_SETOFFSET;
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if (use_nano)
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tmx.modes |= ADJ_NANO;
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tmx.time.tv_sec = sec;
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tmx.time.tv_usec = usec;
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ret = clock_adjtime(CLOCK_REALTIME, &tmx);
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if (ret >= 0) {
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printf("Invalid (sec: %ld usec: %ld) did not fail! ", tmx.time.tv_sec, tmx.time.tv_usec);
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printf("[FAIL]\n");
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return -1;
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}
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return 0;
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}
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int validate_set_offset(void)
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{
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printf("Testing ADJ_SETOFFSET... ");
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/* Test valid values */
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if (set_offset(NSEC_PER_SEC - 1, 1))
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return -1;
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if (set_offset(-NSEC_PER_SEC + 1, 1))
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return -1;
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if (set_offset(-NSEC_PER_SEC - 1, 1))
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return -1;
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if (set_offset(5 * NSEC_PER_SEC, 1))
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return -1;
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if (set_offset(-5 * NSEC_PER_SEC, 1))
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return -1;
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if (set_offset(5 * NSEC_PER_SEC + NSEC_PER_SEC / 2, 1))
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return -1;
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if (set_offset(-5 * NSEC_PER_SEC - NSEC_PER_SEC / 2, 1))
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return -1;
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if (set_offset(USEC_PER_SEC - 1, 0))
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return -1;
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if (set_offset(-USEC_PER_SEC + 1, 0))
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return -1;
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if (set_offset(-USEC_PER_SEC - 1, 0))
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return -1;
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if (set_offset(5 * USEC_PER_SEC, 0))
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return -1;
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if (set_offset(-5 * USEC_PER_SEC, 0))
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return -1;
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if (set_offset(5 * USEC_PER_SEC + USEC_PER_SEC / 2, 0))
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return -1;
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if (set_offset(-5 * USEC_PER_SEC - USEC_PER_SEC / 2, 0))
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return -1;
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/* Test invalid values */
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if (set_bad_offset(0, -1, 1))
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return -1;
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if (set_bad_offset(0, -1, 0))
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return -1;
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if (set_bad_offset(0, 2 * NSEC_PER_SEC, 1))
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return -1;
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if (set_bad_offset(0, 2 * USEC_PER_SEC, 0))
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return -1;
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if (set_bad_offset(0, NSEC_PER_SEC, 1))
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return -1;
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if (set_bad_offset(0, USEC_PER_SEC, 0))
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return -1;
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if (set_bad_offset(0, -NSEC_PER_SEC, 1))
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return -1;
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if (set_bad_offset(0, -USEC_PER_SEC, 0))
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return -1;
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printf("[OK]\n");
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return 0;
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}
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int main(int argc, char **argv)
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{
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if (validate_freq())
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return ksft_exit_fail();
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if (validate_set_offset())
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return ksft_exit_fail();
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return ksft_exit_pass();
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}
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