0c322a33bc
On older kernel, kworker missing keyring from init process , and this keyring is related to FBE , which causes filp_open return ENOKEY or other errors.To fix this,just install init's keyring to per kworkers.This works on Kernel 4.4 and 4.9.
34 lines
962 B
C
34 lines
962 B
C
#include "linux/version.h"
|
|
#include "linux/fs.h"
|
|
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 10, 0)
|
|
#include "linux/key.h"
|
|
#include "linux/errno.h"
|
|
struct key *init_session_keyring = NULL;
|
|
#endif
|
|
ssize_t kernel_read_compat(struct file *p, void *buf, size_t count, loff_t *pos){
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
|
|
return kernel_read(p, buf, count, pos);
|
|
#else
|
|
loff_t offset = pos ? *pos : 0;
|
|
ssize_t result = kernel_read(p, offset, (char *)buf, count);
|
|
if (pos && result > 0)
|
|
{
|
|
*pos = offset + result;
|
|
}
|
|
return result;
|
|
#endif
|
|
}
|
|
|
|
ssize_t kernel_write_compat(struct file *p, const void *buf, size_t count, loff_t *pos){
|
|
#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
|
|
return kernel_write(p, buf, count, pos);
|
|
#else
|
|
loff_t offset = pos ? *pos : 0;
|
|
ssize_t result = kernel_write(p, buf, count, offset);
|
|
if (pos && result > 0)
|
|
{
|
|
*pos = offset + result;
|
|
}
|
|
return result;
|
|
#endif
|
|
} |