9  *  Usage: valid-adjtimex
12  *	$ gcc valid-adjtimex.c -o valid-adjtimex -lrt
40 int clock_adjtime(clockid_t id, struct timex *tx)  in clock_adjtime()  argument
42 	return syscall(__NR_clock_adjtime, id, tx);  in clock_adjtime()
49 	struct timex tx;  in clear_time_state()  local
52 	tx.modes = ADJ_STATUS;  in clear_time_state()
53 	tx.status = 0;  in clear_time_state()
54 	ret = adjtimex(&tx);  in clear_time_state()
65 	 -499 * SHIFTED_PPM,
66 	 -450 * SHIFTED_PPM,
67 	 -400 * SHIFTED_PPM,
68 	 -350 * SHIFTED_PPM,
69 	 -300 * SHIFTED_PPM,
70 	 -250 * SHIFTED_PPM,
71 	 -200 * SHIFTED_PPM,
72 	 -150 * SHIFTED_PPM,
73 	 -100 * SHIFTED_PPM,
74 	  -75 * SHIFTED_PPM,
75 	  -50 * SHIFTED_PPM,
76 	  -25 * SHIFTED_PPM,
77 	  -10 * SHIFTED_PPM,
78 	   -5 * SHIFTED_PPM,
79 	   -1 * SHIFTED_PPM,
80 	-1000,
99 	-1000 * SHIFTED_PPM,
100 	 -550 * SHIFTED_PPM,
106 #define LONG_MIN (-LONG_MAX - 1)
115 	struct timex tx;  in validate_freq()  local
121 	memset(&tx, 0, sizeof(struct timex));  in validate_freq()
127 		tx.modes = ADJ_FREQUENCY;  in validate_freq()
128 		tx.freq = valid_freq[i];  in validate_freq()
130 		ret = adjtimex(&tx);  in validate_freq()
133 			printf("Error: adjtimex(ADJ_FREQ, %ld - %ld ppm\n",  in validate_freq()
135 			pass = -1;  in validate_freq()
138 		tx.modes = 0;  in validate_freq()
139 		ret = adjtimex(&tx);  in validate_freq()
140 		if (tx.freq != valid_freq[i]) {  in validate_freq()
142 					tx.freq, valid_freq[i]);  in validate_freq()
146 		tx.modes = ADJ_FREQUENCY;  in validate_freq()
147 		tx.freq = outofrange_freq[i];  in validate_freq()
149 		ret = adjtimex(&tx);  in validate_freq()
152 			printf("Error: adjtimex(ADJ_FREQ, %ld - %ld ppm\n",  in validate_freq()
154 			pass = -1;  in validate_freq()
157 		tx.modes = 0;  in validate_freq()
158 		ret = adjtimex(&tx);  in validate_freq()
159 		if (tx.freq == outofrange_freq[i]) {  in validate_freq()
162 					tx.freq);  in validate_freq()
163 			pass = -1;  in validate_freq()
171 			tx.modes = ADJ_FREQUENCY;  in validate_freq()
172 			tx.freq = invalid_freq[i];  in validate_freq()
173 			ret = adjtimex(&tx);  in validate_freq()
178 				pass = -1;  in validate_freq()
187 	tx.modes = ADJ_FREQUENCY;  in validate_freq()
188 	tx.freq = 0;  in validate_freq()
189 	ret = adjtimex(&tx);  in validate_freq()
208 			tmx.time.tv_sec -= 1;  in set_offset()
216 			tmx.time.tv_sec -= 1;  in set_offset()
223 		printf("(sec: %ld  usec: %ld) ", tmx.time.tv_sec, tmx.time.tv_usec);  in set_offset()
225 		return -1;  in set_offset()
230 int set_bad_offset(long sec, long usec, int use_nano)  in set_bad_offset()  argument
239 	tmx.time.tv_sec = sec;  in set_bad_offset()
243 		printf("Invalid (sec: %ld  usec: %ld) did not fail! ", tmx.time.tv_sec, tmx.time.tv_usec);  in set_bad_offset()
245 		return -1;  in set_bad_offset()
256 	if (set_offset(NSEC_PER_SEC - 1, 1))  in validate_set_offset()
257 		return -1;  in validate_set_offset()
259 	if (set_offset(-NSEC_PER_SEC + 1, 1))  in validate_set_offset()
260 		return -1;  in validate_set_offset()
262 	if (set_offset(-NSEC_PER_SEC - 1, 1))  in validate_set_offset()
263 		return -1;  in validate_set_offset()
266 		return -1;  in validate_set_offset()
268 	if (set_offset(-5 * NSEC_PER_SEC, 1))  in validate_set_offset()
269 		return -1;  in validate_set_offset()
272 		return -1;  in validate_set_offset()
274 	if (set_offset(-5 * NSEC_PER_SEC - NSEC_PER_SEC / 2, 1))  in validate_set_offset()
275 		return -1;  in validate_set_offset()
277 	if (set_offset(USEC_PER_SEC - 1, 0))  in validate_set_offset()
278 		return -1;  in validate_set_offset()
280 	if (set_offset(-USEC_PER_SEC + 1, 0))  in validate_set_offset()
281 		return -1;  in validate_set_offset()
283 	if (set_offset(-USEC_PER_SEC - 1, 0))  in validate_set_offset()
284 		return -1;  in validate_set_offset()
287 		return -1;  in validate_set_offset()
289 	if (set_offset(-5 * USEC_PER_SEC, 0))  in validate_set_offset()
290 		return -1;  in validate_set_offset()
293 		return -1;  in validate_set_offset()
295 	if (set_offset(-5 * USEC_PER_SEC - USEC_PER_SEC / 2, 0))  in validate_set_offset()
296 		return -1;  in validate_set_offset()
299 	if (set_bad_offset(0, -1, 1))  in validate_set_offset()
300 		return -1;  in validate_set_offset()
301 	if (set_bad_offset(0, -1, 0))  in validate_set_offset()
302 		return -1;  in validate_set_offset()
304 		return -1;  in validate_set_offset()
306 		return -1;  in validate_set_offset()
308 		return -1;  in validate_set_offset()
310 		return -1;  in validate_set_offset()
311 	if (set_bad_offset(0, -NSEC_PER_SEC, 1))  in validate_set_offset()
312 		return -1;  in validate_set_offset()
313 	if (set_bad_offset(0, -USEC_PER_SEC, 0))  in validate_set_offset()
314 		return -1;  in validate_set_offset()