Commit | Line | Data |
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cb2c86fd JA |
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 | ||
14 | static 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 | ||
31 | static 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 | 51 | static int str_to_decimal(const char *str, unsigned long long *val, int kilo) |
cb2c86fd | 52 | { |
cb2c86fd JA |
53 | int len; |
54 | ||
cb2c86fd | 55 | len = strlen(str); |
f90eff5a JA |
56 | if (!len) |
57 | return 1; | |
cb2c86fd JA |
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 | |
cb2c86fd JA |
68 | return 0; |
69 | } | |
70 | ||
b4692828 | 71 | static int check_str_bytes(const char *p, unsigned long long *val) |
cb2c86fd | 72 | { |
cb2c86fd JA |
73 | return str_to_decimal(p, val, 1); |
74 | } | |
75 | ||
b4692828 | 76 | static int check_str_time(const char *p, unsigned long long *val) |
cb2c86fd | 77 | { |
cb2c86fd JA |
78 | return str_to_decimal(p, val, 0); |
79 | } | |
80 | ||
81 | void strip_blank_front(char **p) | |
82 | { | |
83 | char *s = *p; | |
84 | ||
85 | while (isspace(*s)) | |
86 | s++; | |
87 | } | |
88 | ||
89 | void 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 | 99 | static int check_range_bytes(const char *str, unsigned long *val) |
cb2c86fd JA |
100 | { |
101 | char suffix; | |
102 | ||
787f7e95 JA |
103 | if (!strlen(str)) |
104 | return 1; | |
105 | ||
cb2c86fd JA |
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 | 117 | static int check_int(const char *p, unsigned int *val) |
cb2c86fd | 118 | { |
787f7e95 JA |
119 | if (!strlen(p)) |
120 | return 1; | |
e1f36503 JA |
121 | if (sscanf(p, "%u", val) == 1) |
122 | return 0; | |
cb2c86fd | 123 | |
e1f36503 JA |
124 | return 1; |
125 | } | |
cb2c86fd | 126 | |
e1f36503 JA |
127 | static 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) { |
e1f36503 JA |
133 | if (!strcmp(o->name, opt)) |
134 | return o; | |
cb2c86fd | 135 | |
33963c6c JA |
136 | o++; |
137 | } | |
cb2c86fd | 138 | |
e1f36503 | 139 | return NULL; |
cb2c86fd JA |
140 | } |
141 | ||
17abbe89 JA |
142 | #define val_store(ptr, val, off, data) \ |
143 | do { \ | |
144 | ptr = td_var((data), (off)); \ | |
145 | *ptr = (val); \ | |
146 | } while (0) | |
147 | ||
f90eff5a | 148 | static 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 JA |
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 | ||
e1f36503 JA |
162 | switch (o->type) { |
163 | case FIO_OPT_STR: { | |
164 | fio_opt_str_fn *fn = o->cb; | |
cb2c86fd | 165 | |
e1f36503 JA |
166 | ret = fn(data, ptr); |
167 | break; | |
168 | } | |
169 | case FIO_OPT_STR_VAL_TIME: | |
170 | is_time = 1; | |
75e6f36f JA |
171 | case FIO_OPT_STR_VAL: |
172 | case FIO_OPT_STR_VAL_INT: { | |
e1f36503 JA |
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 JA |
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 JA |
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 | } |
e1f36503 JA |
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]; |
e1f36503 JA |
209 | char *p1, *p2; |
210 | ||
0bbab0e7 | 211 | strncpy(tmp, ptr, sizeof(tmp) - 1); |
b765a372 JA |
212 | |
213 | p1 = strchr(tmp, '-'); | |
e1f36503 JA |
214 | if (!p1) { |
215 | ret = 1; | |
216 | break; | |
217 | } | |
218 | ||
219 | p2 = p1 + 1; | |
220 | *p1 = '\0'; | |
b765a372 | 221 | p1 = tmp; |
e1f36503 JA |
222 | |
223 | ret = 1; | |
224 | if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) { | |
225 | ret = 0; | |
e1f36503 | 226 | if (ul1 > ul2) { |
f90eff5a JA |
227 | unsigned long foo = ul1; |
228 | ||
229 | ul1 = ul2; | |
230 | ul2 = foo; | |
231 | } | |
232 | ||
233 | if (first) { | |
17abbe89 JA |
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) { |
17abbe89 JA |
238 | val_store(ilp, ul1, o->off3, data); |
239 | val_store(ilp, ul2, o->off4, data); | |
e1f36503 | 240 | } |
17abbe89 JA |
241 | } |
242 | ||
e1f36503 JA |
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 JA |
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); |
e1f36503 JA |
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 JA |
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); |
e1f36503 JA |
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 JA |
284 | } |
285 | ||
f90eff5a JA |
286 | static int handle_option(struct fio_option *o, const char *ptr, void *data) |
287 | { | |
92b586f8 | 288 | const char *ptr2 = NULL; |
787f7e95 | 289 | int r1, r2; |
f90eff5a JA |
290 | |
291 | /* | |
787f7e95 JA |
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 JA |
296 | if (ptr) |
297 | ptr2 = strchr(ptr, ','); | |
787f7e95 JA |
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; |
f90eff5a JA |
308 | |
309 | ptr2++; | |
787f7e95 JA |
310 | r2 = __handle_option(o, ptr2, data, 0, 0); |
311 | ||
312 | return r1 && r2; | |
f90eff5a JA |
313 | } |
314 | ||
b4692828 JA |
315 | int 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 JA |
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 JA |
331 | } |
332 | ||
e1f36503 | 333 | int parse_option(const char *opt, struct fio_option *options, void *data) |
cb2c86fd | 334 | { |
b4692828 | 335 | struct fio_option *o; |
e1f36503 JA |
336 | char *pre, *post; |
337 | char tmp[64]; | |
338 | ||
0bbab0e7 | 339 | strncpy(tmp, opt, sizeof(tmp) - 1); |
e1f36503 JA |
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 | |
e1f36503 JA |
353 | if (!o) { |
354 | fprintf(stderr, "Bad option %s\n", tmp); | |
355 | return 1; | |
356 | } | |
357 | ||
b1508cf9 JA |
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 | } |