D19259.diff
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	Index: head/sys/libkern/strdup.c
	===================================================================
	--- head/sys/libkern/strdup.c
	+++ head/sys/libkern/strdup.c
	@@ -40,13 +40,22 @@
	#include <sys/malloc.h>

	char *
	-strdup(const char string, struct malloc_type type)
	+strdup_flags(const char string, struct malloc_type type, int flags)
	{
	size_t len;
	char *copy;

	len = strlen(string) + 1;
	- copy = malloc(len, type, M_WAITOK);
	+ copy = malloc(len, type, flags);
	+ if (copy == NULL)
	+ return (NULL);
	bcopy(string, copy, len);
	return (copy);
	+}
	+
	+char *
	+strdup(const char string, struct malloc_type type)
	+{
	+
	+ return (strdup_flags(string, type, M_WAITOK));
	}
	Index: head/sys/sys/libkern.h
	===================================================================
	--- head/sys/sys/libkern.h
	+++ head/sys/sys/libkern.h
	@@ -173,6 +173,7 @@
	int strcmp(const char , const char );
	char strcpy(char __restrict, const char * __restrict);
	size_t strcspn(const char * __restrict, const char * __restrict) __pure;
	+char strdup_flags(const char __restrict, struct malloc_type *, int);
	char strdup(const char __restrict, struct malloc_type *);
	char strncat(char , const char *, size_t);
	char strndup(const char __restrict, size_t, struct malloc_type *);