5 #include <linux/kernel.h>
6 #include <linux/string.h>
11 * smb_getopt - option parser
12 * @caller: name of the caller, for error messages
13 * @options: the options string
14 * @opts: an array of &struct option entries controlling parser operations
15 * @optopt: output; will contain the current option
16 * @optarg: output; will contain the value (if one exists)
17 * @flag: output; may be NULL; should point to a long for or'ing flags
18 * @value: output; may be NULL; will be overwritten with the integer value
19 * of the current argument.
21 * Helper to parse options on the format used by mount ("a=b,c=d,e,f").
22 * Returns opts->val if a matching entry in the 'opts' array is found,
23 * 0 when no more tokens are found, -1 if an error is encountered.
25 int smb_getopt(char *caller
, char **options
, struct option
*opts
,
26 char **optopt
, char **optarg
, unsigned long *flag
,
34 if ((token
= strsep(options
, ",")) == NULL
)
36 } while (*token
== '\0');
40 if ((val
= strchr (token
, '=')) != NULL
) {
43 *value
= simple_strtoul(val
, NULL
, 0);
47 for (i
= 0; opts
[i
].name
!= NULL
; i
++) {
48 if (!strcmp(opts
[i
].name
, token
)) {
49 if (!opts
[i
].flag
&& (!val
|| !*val
)) {
50 printk("%s: the %s option requires an argument\n",
55 if (flag
&& opts
[i
].flag
)
56 *flag
|= opts
[i
].flag
;
61 printk("%s: Unrecognized mount option %s\n", caller
, token
);