[PATCH 15/17] Add strstr to compressed string.c for ARM.
From: Roy Franz <hidden>
Date: 2013-08-07 03:46:06
Also in:
linux-efi, lkml
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
The shared efi-stub-helper.c functions require a strstr implementation. Implementation copied from arch/x86/boot/string.c Signed-off-by: Roy Franz <redacted> --- arch/arm/boot/compressed/string.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/arch/arm/boot/compressed/string.c b/arch/arm/boot/compressed/string.c
index 36e53ef..5397792 100644
--- a/arch/arm/boot/compressed/string.c
+++ b/arch/arm/boot/compressed/string.c@@ -111,6 +111,27 @@ char *strchr(const char *s, int c) return (char *)s; } +/** + * strstr - Find the first substring in a %NUL terminated string + * @s1: The string to be searched + * @s2: The string to search for + */ +char *strstr(const char *s1, const char *s2) +{ + size_t l1, l2; + + l2 = strlen(s2); + if (!l2) + return (char *)s1; + l1 = strlen(s1); + while (l1 >= l2) { + l1--; + if (!memcmp(s1, s2, l2)) + return (char *)s1; + s1++; + } + return NULL; +} #undef memset void *memset(void *s, int c, size_t count)
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1.7.10.4