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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2022-11-01 07:43:10 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-11-02 09:03:54 +0100 |
| commit | 0673a1d5e43c1360149f11724f277c82adc06d3e (patch) | |
| tree | 254b1a9dda19356a676283200b2212039b2e95c5 | |
| parent | b6c480f2570f498fe1ccbe0e6017c8989771d3e0 (diff) | |
| download | barebox-0673a1d5e43c1360149f11724f277c82adc06d3e.tar.gz barebox-0673a1d5e43c1360149f11724f277c82adc06d3e.tar.xz | |
lib: string: implement mempcpy
mempcpy(3) is a GNU libc extension that like stpcpy returns not the
start of the destination buffer, but the first byte after its end.
Provide it as it is useful when concatenating buffers or known-size
strings.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20221101064310.3227410-1-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | include/string.h | 1 | ||||
| -rw-r--r-- | lib/string.c | 5 |
2 files changed, 6 insertions, 0 deletions
diff --git a/include/string.h b/include/string.h index d423bee6fb..499f2ec03c 100644 --- a/include/string.h +++ b/include/string.h @@ -4,6 +4,7 @@ #include <linux/string.h> +void *mempcpy(void *dest, const void *src, size_t count); int strtobool(const char *str, int *val); char *strsep_unescaped(char **, const char *); char *stpcpy(char *dest, const char *src); diff --git a/lib/string.c b/lib/string.c index 6389217d5b..005f4532bb 100644 --- a/lib/string.c +++ b/lib/string.c @@ -603,6 +603,11 @@ void *__memcpy(void * dest, const void *src, size_t count) __alias(__default_memcpy); #endif +void *mempcpy(void *dest, const void *src, size_t count) +{ + return memcpy(dest, src, count) + count; +} +EXPORT_SYMBOL(mempcpy); #ifndef __HAVE_ARCH_MEMMOVE /** |