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author | Philipp Zabel <p.zabel@pengutronix.de> | 2018-02-01 11:37:15 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-02-05 08:26:22 +0100 |
commit | 9eb45f4f3c3f038abbd32890c9fa95a1ebb302cb (patch) | |
tree | f47f696108471dd0e79bfab3f7187450eba8f1c2 | |
parent | d0d548870179ec96d809bc7559531c35b7f77847 (diff) | |
download | barebox-9eb45f4f3c3f038abbd32890c9fa95a1ebb302cb.tar.gz barebox-9eb45f4f3c3f038abbd32890c9fa95a1ebb302cb.tar.xz |
fs/parseopt: Add parseopt_llu_suffix
Add an option parser using strtoull_suffix that can be used to
parse a loop mount offset option.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
-rw-r--r-- | include/parseopt.h | 2 | ||||
-rw-r--r-- | lib/parseopt.c | 30 |
2 files changed, 32 insertions, 0 deletions
diff --git a/include/parseopt.h b/include/parseopt.h index 1f9763f8c9..273a371ac3 100644 --- a/include/parseopt.h +++ b/include/parseopt.h @@ -1,5 +1,7 @@ #ifndef __PARSEOPT_H__ #define __PARSEOPT_H__ +void parseopt_llu_suffix(const char *options, const char *opt, + unsigned long long *val); void parseopt_b(const char *options, const char *opt, bool *val); void parseopt_hu(const char *options, const char *opt, unsigned short *val); diff --git a/lib/parseopt.c b/lib/parseopt.c index 8211733e3b..70983066d9 100644 --- a/lib/parseopt.c +++ b/lib/parseopt.c @@ -122,3 +122,33 @@ again: *val = xstrndup(parsed, endp - parsed); } + +void parseopt_llu_suffix(const char *options, const char *opt, + unsigned long long *val) +{ + const char *start; + size_t optlen = strlen(opt); + unsigned long long v; + char *endp; + +again: + start = strstr(options, opt); + + if (!start) + return; + + if (start > options && start[-1] != ',') { + options = start; + goto again; + } + + if (start[optlen] != '=') { + options = start; + goto again; + } + + v = strtoull_suffix(start + optlen + 1, &endp, 0); + + if (*endp == ',' || *endp == '\0') + *val = v; +} |