diff options
| -rw-r--r-- | utils/mount/parse_opt.c | 24 | ||||
| -rw-r--r-- | utils/mount/parse_opt.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/utils/mount/parse_opt.c b/utils/mount/parse_opt.c index 342e210..7ba61c4 100644 --- a/utils/mount/parse_opt.c +++ b/utils/mount/parse_opt.c @@ -410,6 +410,30 @@ po_found_t po_contains(struct mount_options *options, char *keyword) } /** + * po_contains_prefix - check for presence of an option matching a prefix + * @options: pointer to mount options + * @prefix: pointer to prefix to match against a keyword + * @keyword: pointer to a C string containing the option keyword if found + * + * On success, *keyword contains the pointer of the matching option's keyword. + */ +po_found_t po_contains_prefix(struct mount_options *options, + const char *prefix, char **keyword) +{ + struct mount_option *option; + + if (options && prefix) { + for (option = options->head; option; option = option->next) + if (strncmp(option->keyword, prefix, strlen(prefix)) == 0) { + *keyword = option->keyword; + return PO_FOUND; + } + } + + return PO_NOT_FOUND; +} + +/** * po_get - return the value of the rightmost instance of an option * @options: pointer to mount options * @keyword: pointer to a C string containing option keyword for which to search diff --git a/utils/mount/parse_opt.h b/utils/mount/parse_opt.h index 5037207..0745e0f 100644 --- a/utils/mount/parse_opt.h +++ b/utils/mount/parse_opt.h @@ -45,6 +45,8 @@ po_return_t po_join(struct mount_options *, char **); po_return_t po_append(struct mount_options *, char *); po_found_t po_contains(struct mount_options *, char *); +po_found_t po_contains_prefix(struct mount_options *options, + const char *prefix, char **keyword); char * po_get(struct mount_options *, char *); po_found_t po_get_numeric(struct mount_options *, char *, long *); |