Files

81 lines
1.8 KiB
C

/*
* Copyright (c) XMEDIA. All rights reserved.
*/
#include "osal.h"
#include <linux/version.h>
#include <linux/fs.h>
#include <asm/uaccess.h>
struct file *klib_fopen(const char *filename, int flags, int mode)
{
struct file *filp = filp_open(filename, flags, mode);
return (IS_ERR(filp)) ? NULL : filp;
}
void klib_fclose(struct file *filp)
{
if (filp != NULL) {
filp_close(filp, NULL);
}
return;
}
int klib_fwrite(const char *buf, int len, struct file *filp)
{
int writelen;
if (filp == NULL) {
return -ENOENT;
}
writelen = __kernel_write(filp, buf, len, &filp->f_pos);
return writelen;
}
int klib_fread(char *buf, unsigned int len, struct file *filp)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 0)
mm_segment_t old_fs;
int readlen;
#endif
if (filp == NULL) {
return -ENOENT;
}
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 0)
old_fs = get_fs();
set_fs(get_ds());
/* The cast to a user pointer is valid due to the set_fs() */
readlen = vfs_read(filp, (void __user *)buf, len, &filp->f_pos);
set_fs(old_fs);
return readlen;
#else
return kernel_read(filp, (void __user*)buf, len, &filp->f_pos);
#endif
}
void *osal_klib_fopen(const char *filename, int flags, int mode)
{
return (void *)klib_fopen(filename, flags, mode);
}
EXPORT_SYMBOL(osal_klib_fopen);
void osal_klib_fclose(void *filp)
{
klib_fclose((struct file *)filp);
}
EXPORT_SYMBOL(osal_klib_fclose);
int osal_klib_fwrite(const char *buf, int len, void *filp)
{
return klib_fwrite(buf, len, (struct file *)filp);
}
EXPORT_SYMBOL(osal_klib_fwrite);
int osal_klib_fread(char *buf, unsigned int len, void *filp)
{
return klib_fread(buf, len, (struct file *)filp);
}
EXPORT_SYMBOL(osal_klib_fread);