Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 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 | /* |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 49 | * convert string into decimal value, noting any size suffix |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 50 | */ |
| 51 | static int str_to_decimal(char *p, unsigned long long *val, int kilo) |
| 52 | { |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 53 | char *str = p; |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 54 | int len; |
| 55 | |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 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 | |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 69 | static int check_str_bytes(char *p, unsigned long long *val) |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 70 | { |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 71 | return str_to_decimal(p, val, 1); |
| 72 | } |
| 73 | |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 74 | static int check_str_time(char *p, unsigned long long *val) |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 75 | { |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 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 | |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 97 | static int check_range_bytes(char *str, unsigned long *val) |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 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 | |
Jens Axboe | 33963c6 | 2006-10-27 11:33:01 +0200 | [diff] [blame^] | 112 | static int check_int(char *p, unsigned int *val) |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 113 | { |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 114 | if (sscanf(p, "%u", val) == 1) |
Jens Axboe | cb2c86f | 2006-10-26 13:48:34 +0200 | [diff] [blame] | 115 | return 0; |
| 116 | |
| 117 | return 1; |
| 118 | } |
| 119 | |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 120 | static struct fio_option *find_option(struct fio_option *options, |
| 121 | const char *opt) |
| 122 | { |
Jens Axboe | 33963c6 | 2006-10-27 11:33:01 +0200 | [diff] [blame^] | 123 | struct fio_option *o = &options[0]; |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 124 | |
Jens Axboe | 33963c6 | 2006-10-27 11:33:01 +0200 | [diff] [blame^] | 125 | while (o->name) { |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 126 | if (!strcmp(o->name, opt)) |
| 127 | return o; |
| 128 | |
Jens Axboe | 33963c6 | 2006-10-27 11:33:01 +0200 | [diff] [blame^] | 129 | o++; |
| 130 | } |
Jens Axboe | e1f3650 | 2006-10-27 10:54:08 +0200 | [diff] [blame] | 131 | |
| 132 | return NULL; |
| 133 | } |
| 134 | |
| 135 | static int handle_option(struct fio_option *o, char *ptr, void *data) |
| 136 | { |
| 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; |
| 142 | |
| 143 | tmpbuf = malloc(4096); |
| 144 | |
| 145 | switch (o->type) { |
| 146 | case FIO_OPT_STR: { |
| 147 | fio_opt_str_fn *fn = o->cb; |
| 148 | |
| 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 | } |
| 241 | |
| 242 | free(tmpbuf); |
| 243 | return ret; |
| 244 | } |
| 245 | |
| 246 | int parse_option(const char *opt, struct fio_option *options, void *data) |
| 247 | { |
| 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 | } |
| 265 | |
| 266 | if (!o) { |
| 267 | fprintf(stderr, "Bad option %s\n", tmp); |
| 268 | return 1; |
| 269 | } |
| 270 | |
| 271 | return handle_option(o, post, data); |
| 272 | } |