Author: hselasky
Date: Fri Feb 16 15:52:28 2018
New Revision: 329377
URL: https://svnweb.freebsd.org/changeset/base/329377
Log:
Implement memdup_user_nul() in the LinuxKPI.
MFC after: 1 week
Submitted by: Johannes Lundberg <johal...@gmail.com>
Sponsored by: Mellanox Technologies
Modified:
head/sys/compat/linuxkpi/common/include/linux/string.h
Modified: head/sys/compat/linuxkpi/common/include/linux/string.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/linux/string.h Fri Feb 16
15:41:16 2018 (r329376)
+++ head/sys/compat/linuxkpi/common/include/linux/string.h Fri Feb 16
15:52:28 2018 (r329377)
@@ -71,6 +71,22 @@ memdup_user(const void *ptr, size_t len)
}
static inline void *
+memdup_user_nul(const void *ptr, size_t len)
+{
+ char *retval;
+ int error;
+
+ retval = malloc(len + 1, M_KMALLOC, M_WAITOK);
+ error = linux_copyin(ptr, retval, len);
+ if (error != 0) {
+ free(retval, M_KMALLOC);
+ return (ERR_PTR(error));
+ }
+ retval[len] = '\0';
+ return (retval);
+}
+
+static inline void *
kmemdup(const void *src, size_t len, gfp_t gfp)
{
void *dst;
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