From a353e6aa8ec8f0aa101cc7e9543fe7843ddc6d98 Mon Sep 17 00:00:00 2001 From: Miquel Raynal Date: Thu, 6 Sep 2018 09:08:43 +0200 Subject: [PATCH] lib: strto: parse all lowercase metric prefixes in ustrtoul[l] Both ustrtoul and ustrtoull interpret 1k but not 1m or 1g. Even if the SI symbols for Mega and Giga are 'M' and 'G', certain entries of eg. mtdparts also use (wrongly) the metric prefix 'm' and 'g'. I do not see how parsing lowercase prefixes could break anything, so parse them like their uppercase counterpart. Also, even though kiB is not equal to kB in general, lets not change U-Boot behavior and always use kiB and kB (same applies for MiB vs. MB and GiB vs. GB) as a representation for 1024 instead of 1000. Signed-off-by: Miquel Raynal Reviewed-by: Stefan Roese --- lib/strto.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/lib/strto.c b/lib/strto.c index 7f6076909a..b7fc31d6e5 100644 --- a/lib/strto.c +++ b/lib/strto.c @@ -85,14 +85,13 @@ long simple_strtol(const char *cp, char **endp, unsigned int base) unsigned long ustrtoul(const char *cp, char **endp, unsigned int base) { unsigned long result = simple_strtoul(cp, endp, base); - switch (**endp) { - case 'G': + switch (tolower(**endp)) { + case 'g': result *= 1024; /* fall through */ - case 'M': + case 'm': result *= 1024; /* fall through */ - case 'K': case 'k': result *= 1024; if ((*endp)[1] == 'i') { @@ -108,14 +107,13 @@ unsigned long ustrtoul(const char *cp, char **endp, unsigned int base) unsigned long long ustrtoull(const char *cp, char **endp, unsigned int base) { unsigned long long result = simple_strtoull(cp, endp, base); - switch (**endp) { - case 'G': + switch (tolower(**endp)) { + case 'g': result *= 1024; /* fall through */ - case 'M': + case 'm': result *= 1024; /* fall through */ - case 'K': case 'k': result *= 1024; if ((*endp)[1] == 'i') { -- 2.39.5