From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 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! --- fs/ncpfs/getopt.c | 75 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 fs/ncpfs/getopt.c (limited to 'fs/ncpfs/getopt.c') diff --git a/fs/ncpfs/getopt.c b/fs/ncpfs/getopt.c new file mode 100644 index 00000000000..335b003dddf --- /dev/null +++ b/fs/ncpfs/getopt.c @@ -0,0 +1,75 @@ +/* + * getopt.c + */ + +#include +#include + +#include + +#include "getopt.h" + +/** + * ncp_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 ncp_getopt(const char *caller, char **options, const struct ncp_option *opts, + char **optopt, char **optarg, unsigned long *value) +{ + char *token; + char *val; + + do { + if ((token = strsep(options, ",")) == NULL) + return 0; + } while (*token == '\0'); + if (optopt) + *optopt = token; + + if ((val = strchr (token, '=')) != NULL) { + *val++ = 0; + } + *optarg = val; + for (; opts->name; opts++) { + if (!strcmp(opts->name, token)) { + if (!val) { + if (opts->has_arg & OPT_NOPARAM) { + return opts->val; + } + printk(KERN_INFO "%s: the %s option requires an argument\n", + caller, token); + return -EINVAL; + } + if (opts->has_arg & OPT_INT) { + char* v; + + *value = simple_strtoul(val, &v, 0); + if (!*v) { + return opts->val; + } + printk(KERN_INFO "%s: invalid numeric value in %s=%s\n", + caller, token, val); + return -EDOM; + } + if (opts->has_arg & OPT_STRING) { + return opts->val; + } + printk(KERN_INFO "%s: unexpected argument %s to the %s option\n", + caller, val, token); + return -EINVAL; + } + } + printk(KERN_INFO "%s: Unrecognized mount option %s\n", caller, token); + return -EOPNOTSUPP; +} -- cgit v1.2.3