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