frodovdr/dddvb
1
0
Fork 0
mirror of https://github.com/DigitalDevices/dddvb.git synced 2025-12-26 23:26:46 +01:00
Code Issues Packages Projects Releases Wiki Activity

add memdup_array_user() for older kernels

Browse Source
This commit is contained in:
rjkm
2025-07-28 23:05:07 +02:00
parent 5e9ba032ac
commit a810b0c22d
1 changed files with 24 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
include/dd_compat.h
View File

@@ -29,3 +29,27 @@
#define APSK_256 22 #define APSK_256 22
#define APSK_256_L 23 #define APSK_256_L 23
#endif #endif
#if 0
#if (KERNEL_VERSION(6, 6, 3) >= LINUX_VERSION_CODE)
#include <linux/overflow.h>
/**
* memdup_array_user - duplicate array from user space
* @src: source address in user space
* @n: number of array members to copy
* @size: size of one array member
*
* Return: an ERR_PTR() on failure. Result is physically
* contiguous, to be freed by kfree().
*/
static inline void *memdup_array_user(const void __user *src, size_t n, size_t size)
{
size_t nbytes;
if (check_mul_overflow(n, size, &nbytes))
return ERR_PTR(-EOVERFLOW);
return memdup_user(src, nbytes);
}
#endif
#endif