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 JA |
50 | */ |
51 | static int str_to_decimal(char *p, unsigned long long *val, int kilo) | |
52 | { | |
e1f36503 | 53 | char *str = p; |
cb2c86fd JA |
54 | int len; |
55 | ||
cb2c86fd JA |
56 | len = strlen(str); |
57 | ||
58 | *val = strtoul(str, NULL, 10); | |
59 | if (*val == ULONG_MAX && errno == ERANGE) | |
60 | return 1; | |
61 | ||
62 | if (kilo) | |
63 | *val *= get_mult_bytes(str[len - 1]); | |
64 | else | |
65 | *val *= get_mult_time(str[len - 1]); | |
66 | return 0; | |
67 | } | |
68 | ||
e1f36503 | 69 | static int check_str_bytes(char *p, unsigned long long *val) |
cb2c86fd | 70 | { |
cb2c86fd JA |
71 | return str_to_decimal(p, val, 1); |
72 | } | |
73 | ||
e1f36503 | 74 | static int check_str_time(char *p, unsigned long long *val) |
cb2c86fd | 75 | { |
cb2c86fd JA |
76 | return str_to_decimal(p, val, 0); |
77 | } | |
78 | ||
79 | void strip_blank_front(char **p) | |
80 | { | |
81 | char *s = *p; | |
82 | ||
83 | while (isspace(*s)) | |
84 | s++; | |
85 | } | |
86 | ||
87 | void strip_blank_end(char *p) | |
88 | { | |
89 | char *s = p + strlen(p) - 1; | |
90 | ||
91 | while (isspace(*s) || iscntrl(*s)) | |
92 | s--; | |
93 | ||
94 | *(s + 1) = '\0'; | |
95 | } | |
96 | ||
e1f36503 | 97 | static int check_range_bytes(char *str, unsigned long *val) |
cb2c86fd JA |
98 | { |
99 | char suffix; | |
100 | ||
101 | if (sscanf(str, "%lu%c", val, &suffix) == 2) { | |
102 | *val *= get_mult_bytes(suffix); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | if (sscanf(str, "%lu", val) == 1) | |
107 | return 0; | |
108 | ||
109 | return 1; | |
110 | } | |
111 | ||
33963c6c | 112 | static int check_int(char *p, unsigned int *val) |
cb2c86fd | 113 | { |
e1f36503 JA |
114 | if (sscanf(p, "%u", val) == 1) |
115 | return 0; | |
cb2c86fd | 116 | |
e1f36503 JA |
117 | return 1; |
118 | } | |
cb2c86fd | 119 | |
e1f36503 JA |
120 | static struct fio_option *find_option(struct fio_option *options, |
121 | const char *opt) | |
122 | { | |
33963c6c | 123 | struct fio_option *o = &options[0]; |
cb2c86fd | 124 | |
33963c6c | 125 | while (o->name) { |
e1f36503 JA |
126 | if (!strcmp(o->name, opt)) |
127 | return o; | |
cb2c86fd | 128 | |
33963c6c JA |
129 | o++; |
130 | } | |
cb2c86fd | 131 | |
e1f36503 | 132 | return NULL; |
cb2c86fd JA |
133 | } |
134 | ||
e1f36503 | 135 | static int handle_option(struct fio_option *o, char *ptr, void *data) |
cb2c86fd | 136 | { |
e1f36503 JA |
137 | unsigned int il, *ilp; |
138 | unsigned long long ull, *ullp; | |
139 | unsigned long ul1, ul2, *ulp1, *ulp2; | |
140 | char *tmpbuf, **cp; | |
141 | int ret = 0, is_time = 0; | |
cb2c86fd | 142 | |
e1f36503 | 143 | tmpbuf = malloc(4096); |
cb2c86fd | 144 | |
e1f36503 JA |
145 | switch (o->type) { |
146 | case FIO_OPT_STR: { | |
147 | fio_opt_str_fn *fn = o->cb; | |
cb2c86fd | 148 | |
e1f36503 JA |
149 | ret = fn(data, ptr); |
150 | break; | |
151 | } | |
152 | case FIO_OPT_STR_VAL_TIME: | |
153 | is_time = 1; | |
154 | case FIO_OPT_STR_VAL: { | |
155 | fio_opt_str_val_fn *fn = o->cb; | |
156 | ||
157 | if (is_time) | |
158 | ret = check_str_time(ptr, &ull); | |
159 | else | |
160 | ret = check_str_bytes(ptr, &ull); | |
161 | ||
162 | if (ret) | |
163 | break; | |
164 | ||
165 | if (o->max_val && ull > o->max_val) | |
166 | ull = o->max_val; | |
167 | ||
168 | if (fn) | |
169 | ret = fn(data, &ull); | |
170 | else { | |
171 | ullp = td_var(data, o->off1); | |
172 | *ullp = ull; | |
173 | } | |
174 | break; | |
175 | } | |
176 | case FIO_OPT_STR_STORE: | |
177 | cp = td_var(data, o->off1); | |
178 | *cp = strdup(ptr); | |
179 | break; | |
180 | case FIO_OPT_RANGE: { | |
181 | char *p1, *p2; | |
182 | ||
183 | p1 = strchr(ptr, '-'); | |
184 | if (!p1) { | |
185 | ret = 1; | |
186 | break; | |
187 | } | |
188 | ||
189 | p2 = p1 + 1; | |
190 | *p1 = '\0'; | |
191 | ||
192 | ret = 1; | |
193 | if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) { | |
194 | ret = 0; | |
195 | ulp1 = td_var(data, o->off1); | |
196 | ulp2 = td_var(data, o->off2); | |
197 | if (ul1 > ul2) { | |
198 | *ulp1 = ul2; | |
199 | *ulp2 = ul1; | |
200 | } else { | |
201 | *ulp2 = ul2; | |
202 | *ulp1 = ul1; | |
203 | } | |
204 | } | |
205 | ||
206 | break; | |
207 | } | |
208 | case FIO_OPT_INT: { | |
209 | fio_opt_int_fn *fn = o->cb; | |
210 | ||
211 | ret = check_int(ptr, &il); | |
212 | if (ret) | |
213 | break; | |
214 | ||
215 | if (o->max_val && il > o->max_val) | |
216 | il = o->max_val; | |
217 | ||
218 | if (fn) | |
219 | ret = fn(data, &il); | |
220 | else { | |
221 | ilp = td_var(data, o->off1); | |
222 | *ilp = il; | |
223 | } | |
224 | break; | |
225 | } | |
226 | case FIO_OPT_STR_SET: { | |
227 | fio_opt_str_set_fn *fn = o->cb; | |
228 | ||
229 | if (fn) | |
230 | ret = fn(data); | |
231 | else { | |
232 | ilp = td_var(data, o->off1); | |
233 | *ilp = 1; | |
234 | } | |
235 | break; | |
236 | } | |
237 | default: | |
238 | fprintf(stderr, "Bad option type %d\n", o->type); | |
239 | ret = 1; | |
240 | } | |
cb2c86fd | 241 | |
e1f36503 JA |
242 | free(tmpbuf); |
243 | return ret; | |
cb2c86fd JA |
244 | } |
245 | ||
e1f36503 | 246 | int parse_option(const char *opt, struct fio_option *options, void *data) |
cb2c86fd | 247 | { |
e1f36503 JA |
248 | struct fio_option *o = find_option(options, opt); |
249 | char *pre, *post; | |
250 | char tmp[64]; | |
251 | ||
252 | strcpy(tmp, opt); | |
253 | ||
254 | pre = strchr(tmp, '='); | |
255 | if (pre) { | |
256 | post = pre; | |
257 | *pre = '\0'; | |
258 | pre = tmp; | |
259 | post++; | |
260 | o = find_option(options, pre); | |
261 | } else { | |
262 | o = find_option(options, tmp); | |
263 | post = NULL; | |
264 | } | |
cb2c86fd | 265 | |
e1f36503 JA |
266 | if (!o) { |
267 | fprintf(stderr, "Bad option %s\n", tmp); | |
268 | return 1; | |
269 | } | |
270 | ||
271 | return handle_option(o, post, data); | |
272 | } |