mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 02:40:55 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/*
|
|
* getopt.c
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/string.h>
|
|
#include <linux/net.h>
|
|
|
|
#include "getopt.h"
|
|
|
|
/**
|
|
* smb_getopt - option parser
|
|
* @caller: name of the caller, for error messages
|
|
* @options: the options string
|
|
* @opts: an array of &struct option entries controlling parser operations
|
|
* @optopt: output; will contain the current option
|
|
* @optarg: output; will contain the value (if one exists)
|
|
* @flag: output; may be NULL; should point to a long for or'ing flags
|
|
* @value: output; may be NULL; will be overwritten with the integer value
|
|
* of the current argument.
|
|
*
|
|
* Helper to parse options on the format used by mount ("a=b,c=d,e,f").
|
|
* Returns opts->val if a matching entry in the 'opts' array is found,
|
|
* 0 when no more tokens are found, -1 if an error is encountered.
|
|
*/
|
|
int smb_getopt(char *caller, char **options, struct option *opts,
|
|
char **optopt, char **optarg, unsigned long *flag,
|
|
unsigned long *value)
|
|
{
|
|
char *token;
|
|
char *val;
|
|
int i;
|
|
|
|
do {
|
|
if ((token = strsep(options, ",")) == NULL)
|
|
return 0;
|
|
} while (*token == '\0');
|
|
*optopt = token;
|
|
|
|
*optarg = NULL;
|
|
if ((val = strchr (token, '=')) != NULL) {
|
|
*val++ = 0;
|
|
if (value)
|
|
*value = simple_strtoul(val, NULL, 0);
|
|
*optarg = val;
|
|
}
|
|
|
|
for (i = 0; opts[i].name != NULL; i++) {
|
|
if (!strcmp(opts[i].name, token)) {
|
|
if (!opts[i].flag && (!val || !*val)) {
|
|
printk("%s: the %s option requires an argument\n",
|
|
caller, token);
|
|
return -1;
|
|
}
|
|
|
|
if (flag && opts[i].flag)
|
|
*flag |= opts[i].flag;
|
|
|
|
return opts[i].val;
|
|
}
|
|
}
|
|
printk("%s: Unrecognized mount option %s\n", caller, token);
|
|
return -1;
|
|
}
|