[PATCH] Get rid of FIO_INST_PREFIX
[fio.git] / parse.c
CommitLineData
cb2c86fd
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1/*
2 * This file contains the ini and command liner parser main.
3 */
4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <ctype.h>
8#include <string.h>
9#include <errno.h>
10#include <limits.h>
11
12#include "parse.h"
13
14static unsigned long get_mult_time(char c)
15{
16 switch (c) {
17 case 'm':
18 case 'M':
19 return 60;
20 case 'h':
21 case 'H':
22 return 60 * 60;
23 case 'd':
24 case 'D':
25 return 24 * 60 * 60;
26 default:
27 return 1;
28 }
29}
30
31static unsigned long get_mult_bytes(char c)
32{
33 switch (c) {
34 case 'k':
35 case 'K':
36 return 1024;
37 case 'm':
38 case 'M':
39 return 1024 * 1024;
40 case 'g':
41 case 'G':
42 return 1024 * 1024 * 1024;
43 default:
44 return 1;
45 }
46}
47
48/*
e1f36503 49 * convert string into decimal value, noting any size suffix
cb2c86fd 50 */
b4692828 51static int str_to_decimal(const char *str, unsigned long long *val, int kilo)
cb2c86fd 52{
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53 int len;
54
cb2c86fd 55 len = strlen(str);
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56 if (!len)
57 return 1;
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58
59 *val = strtoul(str, NULL, 10);
60 if (*val == ULONG_MAX && errno == ERANGE)
61 return 1;
62
63 if (kilo)
64 *val *= get_mult_bytes(str[len - 1]);
65 else
66 *val *= get_mult_time(str[len - 1]);
787f7e95 67
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68 return 0;
69}
70
b4692828 71static int check_str_bytes(const char *p, unsigned long long *val)
cb2c86fd 72{
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73 return str_to_decimal(p, val, 1);
74}
75
b4692828 76static int check_str_time(const char *p, unsigned long long *val)
cb2c86fd 77{
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78 return str_to_decimal(p, val, 0);
79}
80
81void strip_blank_front(char **p)
82{
83 char *s = *p;
84
85 while (isspace(*s))
86 s++;
87}
88
89void strip_blank_end(char *p)
90{
91 char *s = p + strlen(p) - 1;
92
93 while (isspace(*s) || iscntrl(*s))
94 s--;
95
96 *(s + 1) = '\0';
97}
98
b765a372 99static int check_range_bytes(const char *str, unsigned long *val)
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100{
101 char suffix;
102
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103 if (!strlen(str))
104 return 1;
105
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106 if (sscanf(str, "%lu%c", val, &suffix) == 2) {
107 *val *= get_mult_bytes(suffix);
108 return 0;
109 }
110
111 if (sscanf(str, "%lu", val) == 1)
112 return 0;
113
114 return 1;
115}
116
b4692828 117static int check_int(const char *p, unsigned int *val)
cb2c86fd 118{
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119 if (!strlen(p))
120 return 1;
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121 if (sscanf(p, "%u", val) == 1)
122 return 0;
cb2c86fd 123
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124 return 1;
125}
cb2c86fd 126
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127static struct fio_option *find_option(struct fio_option *options,
128 const char *opt)
129{
33963c6c 130 struct fio_option *o = &options[0];
cb2c86fd 131
33963c6c 132 while (o->name) {
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133 if (!strcmp(o->name, opt))
134 return o;
cb2c86fd 135
33963c6c
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136 o++;
137 }
cb2c86fd 138
e1f36503 139 return NULL;
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140}
141
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142#define val_store(ptr, val, off, data) \
143 do { \
144 ptr = td_var((data), (off)); \
145 *ptr = (val); \
146 } while (0)
147
f90eff5a 148static int __handle_option(struct fio_option *o, const char *ptr, void *data,
787f7e95 149 int first, int more)
cb2c86fd 150{
17abbe89 151 unsigned int il, *ilp;
e1f36503 152 unsigned long long ull, *ullp;
75e6f36f 153 unsigned long ul1, ul2;
b4692828 154 char **cp;
e1f36503 155 int ret = 0, is_time = 0;
cb2c86fd 156
08e26e35
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157 if (!ptr && o->type != FIO_OPT_STR_SET) {
158 fprintf(stderr, "Option %s requires an argument\n", o->name);
159 return 1;
160 }
161
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162 switch (o->type) {
163 case FIO_OPT_STR: {
164 fio_opt_str_fn *fn = o->cb;
cb2c86fd 165
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166 ret = fn(data, ptr);
167 break;
168 }
169 case FIO_OPT_STR_VAL_TIME:
170 is_time = 1;
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171 case FIO_OPT_STR_VAL:
172 case FIO_OPT_STR_VAL_INT: {
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173 fio_opt_str_val_fn *fn = o->cb;
174
175 if (is_time)
176 ret = check_str_time(ptr, &ull);
177 else
178 ret = check_str_bytes(ptr, &ull);
179
180 if (ret)
181 break;
182
183 if (o->max_val && ull > o->max_val)
184 ull = o->max_val;
185
186 if (fn)
187 ret = fn(data, &ull);
188 else {
75e6f36f 189 if (o->type == FIO_OPT_STR_VAL_INT) {
17abbe89
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190 if (first)
191 val_store(ilp, ull, o->off1, data);
787f7e95 192 if (!more && o->off2)
17abbe89 193 val_store(ilp, ull, o->off2, data);
75e6f36f 194 } else {
17abbe89
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195 if (first)
196 val_store(ullp, ull, o->off1, data);
787f7e95 197 if (!more && o->off2)
17abbe89 198 val_store(ullp, ull, o->off2, data);
75e6f36f 199 }
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200 }
201 break;
202 }
203 case FIO_OPT_STR_STORE:
204 cp = td_var(data, o->off1);
205 *cp = strdup(ptr);
206 break;
207 case FIO_OPT_RANGE: {
b765a372 208 char tmp[128];
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209 char *p1, *p2;
210
0bbab0e7 211 strncpy(tmp, ptr, sizeof(tmp) - 1);
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212
213 p1 = strchr(tmp, '-');
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214 if (!p1) {
215 ret = 1;
216 break;
217 }
218
219 p2 = p1 + 1;
220 *p1 = '\0';
b765a372 221 p1 = tmp;
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222
223 ret = 1;
224 if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) {
225 ret = 0;
e1f36503 226 if (ul1 > ul2) {
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227 unsigned long foo = ul1;
228
229 ul1 = ul2;
230 ul2 = foo;
231 }
232
233 if (first) {
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234 val_store(ilp, ul1, o->off1, data);
235 val_store(ilp, ul2, o->off2, data);
236 }
787f7e95 237 if (!more && o->off3 && o->off4) {
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238 val_store(ilp, ul1, o->off3, data);
239 val_store(ilp, ul2, o->off4, data);
e1f36503 240 }
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241 }
242
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243 break;
244 }
245 case FIO_OPT_INT: {
246 fio_opt_int_fn *fn = o->cb;
247
248 ret = check_int(ptr, &il);
249 if (ret)
250 break;
251
252 if (o->max_val && il > o->max_val)
253 il = o->max_val;
254
255 if (fn)
256 ret = fn(data, &il);
257 else {
17abbe89
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258 if (first)
259 val_store(ilp, il, o->off1, data);
787f7e95 260 if (!more && o->off2)
17abbe89 261 val_store(ilp, il, o->off2, data);
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262 }
263 break;
264 }
265 case FIO_OPT_STR_SET: {
266 fio_opt_str_set_fn *fn = o->cb;
267
268 if (fn)
269 ret = fn(data);
270 else {
17abbe89
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271 if (first)
272 val_store(ilp, 1, o->off1, data);
787f7e95 273 if (!more && o->off2)
17abbe89 274 val_store(ilp, 1, o->off2, data);
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275 }
276 break;
277 }
278 default:
279 fprintf(stderr, "Bad option type %d\n", o->type);
280 ret = 1;
281 }
cb2c86fd 282
e1f36503 283 return ret;
cb2c86fd
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284}
285
f90eff5a
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286static int handle_option(struct fio_option *o, const char *ptr, void *data)
287{
92b586f8 288 const char *ptr2 = NULL;
787f7e95 289 int r1, r2;
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290
291 /*
787f7e95
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292 * See if we have a second set of parameters, hidden after a comma.
293 * Do this before parsing the first round, to check if we should
294 * copy set 1 options to set 2.
f90eff5a 295 */
92b586f8
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296 if (ptr)
297 ptr2 = strchr(ptr, ',');
787f7e95
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298
299 /*
300 * Don't return early if parsing the first option fails - if
301 * we are doing multiple arguments, we can allow the first one
302 * being empty.
303 */
304 r1 = __handle_option(o, ptr, data, 1, !!ptr2);
305
f90eff5a 306 if (!ptr2)
787f7e95 307 return r1;
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308
309 ptr2++;
787f7e95
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310 r2 = __handle_option(o, ptr2, data, 0, 0);
311
312 return r1 && r2;
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313}
314
b4692828
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315int parse_cmd_option(const char *opt, const char *val,
316 struct fio_option *options, void *data)
317{
318 struct fio_option *o;
319
320 o = find_option(options, opt);
321 if (!o) {
322 fprintf(stderr, "Bad option %s\n", opt);
323 return 1;
324 }
325
b1508cf9
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326 if (!handle_option(o, val, data))
327 return 0;
328
329 fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val);
330 return 1;
b4692828
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331}
332
e1f36503 333int parse_option(const char *opt, struct fio_option *options, void *data)
cb2c86fd 334{
b4692828 335 struct fio_option *o;
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336 char *pre, *post;
337 char tmp[64];
338
0bbab0e7 339 strncpy(tmp, opt, sizeof(tmp) - 1);
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340
341 pre = strchr(tmp, '=');
342 if (pre) {
343 post = pre;
344 *pre = '\0';
345 pre = tmp;
346 post++;
347 o = find_option(options, pre);
348 } else {
349 o = find_option(options, tmp);
350 post = NULL;
351 }
cb2c86fd 352
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353 if (!o) {
354 fprintf(stderr, "Bad option %s\n", tmp);
355 return 1;
356 }
357
b1508cf9
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358 if (!handle_option(o, post, data))
359 return 0;
360
361 fprintf(stderr, "fio: failed parsing %s\n", opt);
362 return 1;
e1f36503 363}