123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192 |
- #include <linux/export.h>
- #include <linux/kernel.h>
- #include <linux/string.h>
- static int get_range(char **str, int *pint, int n)
- {
- int x, inc_counter, upper_range;
- (*str)++;
- upper_range = simple_strtol((*str), NULL, 0);
- inc_counter = upper_range - *pint;
- for (x = *pint; n && x < upper_range; x++, n--)
- *pint++ = x;
- return inc_counter;
- }
- int get_option(char **str, int *pint)
- {
- char *cur = *str;
- if (!cur || !(*cur))
- return 0;
- *pint = simple_strtol(cur, str, 0);
- if (cur == *str)
- return 0;
- if (**str == ',') {
- (*str)++;
- return 2;
- }
- if (**str == '-')
- return 3;
- return 1;
- }
- EXPORT_SYMBOL(get_option);
- char *get_options(const char *str, int nints, int *ints)
- {
- int res, i = 1;
- while (i < nints) {
- res = get_option((char **)&str, ints + i);
- if (res == 0)
- break;
- if (res == 3) {
- int range_nums;
- range_nums = get_range((char **)&str, ints + i, nints - i);
- if (range_nums < 0)
- break;
-
- i += (range_nums - 1);
- }
- i++;
- if (res == 1)
- break;
- }
- ints[0] = i - 1;
- return (char *)str;
- }
- EXPORT_SYMBOL(get_options);
- unsigned long long memparse(const char *ptr, char **retptr)
- {
- char *endptr;
- unsigned long long ret = simple_strtoull(ptr, &endptr, 0);
- switch (*endptr) {
- case 'E':
- case 'e':
- ret <<= 10;
- case 'P':
- case 'p':
- ret <<= 10;
- case 'T':
- case 't':
- ret <<= 10;
- case 'G':
- case 'g':
- ret <<= 10;
- case 'M':
- case 'm':
- ret <<= 10;
- case 'K':
- case 'k':
- ret <<= 10;
- endptr++;
- default:
- break;
- }
- if (retptr)
- *retptr = endptr;
- return ret;
- }
- EXPORT_SYMBOL(memparse);
- bool parse_option_str(const char *str, const char *option)
- {
- while (*str) {
- if (!strncmp(str, option, strlen(option))) {
- str += strlen(option);
- if (!*str || *str == ',')
- return true;
- }
- while (*str && *str != ',')
- str++;
- if (*str == ',')
- str++;
- }
- return false;
- }
|