| 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 | /* |
| 49 | * convert string into decimal value, noting any size suffix |
| 50 | */ |
| 51 | static int str_to_decimal(const char *str, unsigned long long *val, int kilo) |
| 52 | { |
| 53 | int len; |
| 54 | |
| 55 | len = strlen(str); |
| 56 | |
| 57 | *val = strtoul(str, NULL, 10); |
| 58 | if (*val == ULONG_MAX && errno == ERANGE) |
| 59 | return 1; |
| 60 | |
| 61 | if (kilo) |
| 62 | *val *= get_mult_bytes(str[len - 1]); |
| 63 | else |
| 64 | *val *= get_mult_time(str[len - 1]); |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | static int check_str_bytes(const char *p, unsigned long long *val) |
| 69 | { |
| 70 | return str_to_decimal(p, val, 1); |
| 71 | } |
| 72 | |
| 73 | static int check_str_time(const char *p, unsigned long long *val) |
| 74 | { |
| 75 | return str_to_decimal(p, val, 0); |
| 76 | } |
| 77 | |
| 78 | void strip_blank_front(char **p) |
| 79 | { |
| 80 | char *s = *p; |
| 81 | |
| 82 | while (isspace(*s)) |
| 83 | s++; |
| 84 | } |
| 85 | |
| 86 | void strip_blank_end(char *p) |
| 87 | { |
| 88 | char *s = p + strlen(p) - 1; |
| 89 | |
| 90 | while (isspace(*s) || iscntrl(*s)) |
| 91 | s--; |
| 92 | |
| 93 | *(s + 1) = '\0'; |
| 94 | } |
| 95 | |
| 96 | static int check_range_bytes(const char *str, unsigned long *val) |
| 97 | { |
| 98 | char suffix; |
| 99 | |
| 100 | if (sscanf(str, "%lu%c", val, &suffix) == 2) { |
| 101 | *val *= get_mult_bytes(suffix); |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | if (sscanf(str, "%lu", val) == 1) |
| 106 | return 0; |
| 107 | |
| 108 | return 1; |
| 109 | } |
| 110 | |
| 111 | static int check_int(const char *p, unsigned int *val) |
| 112 | { |
| 113 | if (sscanf(p, "%u", val) == 1) |
| 114 | return 0; |
| 115 | |
| 116 | return 1; |
| 117 | } |
| 118 | |
| 119 | static struct fio_option *find_option(struct fio_option *options, |
| 120 | const char *opt) |
| 121 | { |
| 122 | struct fio_option *o = &options[0]; |
| 123 | |
| 124 | while (o->name) { |
| 125 | if (!strcmp(o->name, opt)) |
| 126 | return o; |
| 127 | |
| 128 | o++; |
| 129 | } |
| 130 | |
| 131 | return NULL; |
| 132 | } |
| 133 | |
| 134 | static int handle_option(struct fio_option *o, const char *ptr, void *data) |
| 135 | { |
| 136 | unsigned int il, *ilp1, *ilp2; |
| 137 | unsigned long long ull, *ullp; |
| 138 | unsigned long ul1, ul2; |
| 139 | char **cp; |
| 140 | int ret = 0, is_time = 0; |
| 141 | |
| 142 | switch (o->type) { |
| 143 | case FIO_OPT_STR: { |
| 144 | fio_opt_str_fn *fn = o->cb; |
| 145 | |
| 146 | ret = fn(data, ptr); |
| 147 | break; |
| 148 | } |
| 149 | case FIO_OPT_STR_VAL_TIME: |
| 150 | is_time = 1; |
| 151 | case FIO_OPT_STR_VAL: |
| 152 | case FIO_OPT_STR_VAL_INT: { |
| 153 | fio_opt_str_val_fn *fn = o->cb; |
| 154 | |
| 155 | if (is_time) |
| 156 | ret = check_str_time(ptr, &ull); |
| 157 | else |
| 158 | ret = check_str_bytes(ptr, &ull); |
| 159 | |
| 160 | if (ret) |
| 161 | break; |
| 162 | |
| 163 | if (o->max_val && ull > o->max_val) |
| 164 | ull = o->max_val; |
| 165 | |
| 166 | if (fn) |
| 167 | ret = fn(data, &ull); |
| 168 | else { |
| 169 | if (o->type == FIO_OPT_STR_VAL_INT) { |
| 170 | ilp1 = td_var(data, o->off1); |
| 171 | *ilp1 = ull; |
| 172 | } else { |
| 173 | ullp = td_var(data, o->off1); |
| 174 | *ullp = ull; |
| 175 | } |
| 176 | } |
| 177 | break; |
| 178 | } |
| 179 | case FIO_OPT_STR_STORE: |
| 180 | cp = td_var(data, o->off1); |
| 181 | *cp = strdup(ptr); |
| 182 | break; |
| 183 | case FIO_OPT_RANGE: { |
| 184 | char tmp[128]; |
| 185 | char *p1, *p2; |
| 186 | |
| 187 | strncpy(tmp, ptr, sizeof(tmp) - 1); |
| 188 | |
| 189 | p1 = strchr(tmp, '-'); |
| 190 | if (!p1) { |
| 191 | ret = 1; |
| 192 | break; |
| 193 | } |
| 194 | |
| 195 | p2 = p1 + 1; |
| 196 | *p1 = '\0'; |
| 197 | p1 = tmp; |
| 198 | |
| 199 | ret = 1; |
| 200 | if (!check_range_bytes(p1, &ul1) && !check_range_bytes(p2, &ul2)) { |
| 201 | ret = 0; |
| 202 | ilp1 = td_var(data, o->off1); |
| 203 | ilp2 = td_var(data, o->off2); |
| 204 | if (ul1 > ul2) { |
| 205 | *ilp1 = ul2; |
| 206 | *ilp2 = ul1; |
| 207 | } else { |
| 208 | *ilp2 = ul2; |
| 209 | *ilp1 = ul1; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | break; |
| 214 | } |
| 215 | case FIO_OPT_INT: { |
| 216 | fio_opt_int_fn *fn = o->cb; |
| 217 | |
| 218 | ret = check_int(ptr, &il); |
| 219 | if (ret) |
| 220 | break; |
| 221 | |
| 222 | if (o->max_val && il > o->max_val) |
| 223 | il = o->max_val; |
| 224 | |
| 225 | if (fn) |
| 226 | ret = fn(data, &il); |
| 227 | else { |
| 228 | ilp1 = td_var(data, o->off1); |
| 229 | *ilp1 = il; |
| 230 | } |
| 231 | break; |
| 232 | } |
| 233 | case FIO_OPT_STR_SET: { |
| 234 | fio_opt_str_set_fn *fn = o->cb; |
| 235 | |
| 236 | if (fn) |
| 237 | ret = fn(data); |
| 238 | else { |
| 239 | ilp1 = td_var(data, o->off1); |
| 240 | *ilp1 = 1; |
| 241 | } |
| 242 | break; |
| 243 | } |
| 244 | default: |
| 245 | fprintf(stderr, "Bad option type %d\n", o->type); |
| 246 | ret = 1; |
| 247 | } |
| 248 | |
| 249 | return ret; |
| 250 | } |
| 251 | |
| 252 | int parse_cmd_option(const char *opt, const char *val, |
| 253 | struct fio_option *options, void *data) |
| 254 | { |
| 255 | struct fio_option *o; |
| 256 | |
| 257 | o = find_option(options, opt); |
| 258 | if (!o) { |
| 259 | fprintf(stderr, "Bad option %s\n", opt); |
| 260 | return 1; |
| 261 | } |
| 262 | |
| 263 | if (!handle_option(o, val, data)) |
| 264 | return 0; |
| 265 | |
| 266 | fprintf(stderr, "fio: failed parsing %s=%s\n", opt, val); |
| 267 | return 1; |
| 268 | } |
| 269 | |
| 270 | int parse_option(const char *opt, struct fio_option *options, void *data) |
| 271 | { |
| 272 | struct fio_option *o; |
| 273 | char *pre, *post; |
| 274 | char tmp[64]; |
| 275 | |
| 276 | strncpy(tmp, opt, sizeof(tmp) - 1); |
| 277 | |
| 278 | pre = strchr(tmp, '='); |
| 279 | if (pre) { |
| 280 | post = pre; |
| 281 | *pre = '\0'; |
| 282 | pre = tmp; |
| 283 | post++; |
| 284 | o = find_option(options, pre); |
| 285 | } else { |
| 286 | o = find_option(options, tmp); |
| 287 | post = NULL; |
| 288 | } |
| 289 | |
| 290 | if (!o) { |
| 291 | fprintf(stderr, "Bad option %s\n", tmp); |
| 292 | return 1; |
| 293 | } |
| 294 | |
| 295 | if (!handle_option(o, post, data)) |
| 296 | return 0; |
| 297 | |
| 298 | fprintf(stderr, "fio: failed parsing %s\n", opt); |
| 299 | return 1; |
| 300 | } |