Signed-off-by: Ralf Ramsauer <[email protected]>
---
inmates/lib/inmate_common.h | 1 +
inmates/lib/string.c | 10 ++++++++++
2 files changed, 11 insertions(+)
diff --git a/inmates/lib/inmate_common.h b/inmates/lib/inmate_common.h
index dfe33347..ba39550e 100644
--- a/inmates/lib/inmate_common.h
+++ b/inmates/lib/inmate_common.h
@@ -71,6 +71,7 @@ void printk(const char *fmt, ...);
void *memset(void *s, int c, unsigned long n);
void *memcpy(void *d, const void *s, unsigned long n);
+int memcmp(const void *s1, const void *s2, unsigned long n);
unsigned long strlen(const char *s);
int strncmp(const char *s1, const char *s2, unsigned long n);
int strcmp(const char *s1, const char *s2);
diff --git a/inmates/lib/string.c b/inmates/lib/string.c
index a7c46229..5e2f1445 100644
--- a/inmates/lib/string.c
+++ b/inmates/lib/string.c
@@ -57,6 +57,16 @@ void *memset(void *s, int c, unsigned long n)
return s;
}
+int memcmp(const void *s1, const void *s2, unsigned long n)
+{
+ const unsigned char *_s1 = s1, *_s2 = s2;
+
+ while (n-- > 0)
+ if (*_s1++ != *_s2++)
+ return _s1[-1] < _s2[-1] ? -1 : 1;
+ return 0;
+}
+
unsigned long strlen(const char *s1)
{
unsigned long len = 0;
--
2.17.0
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