drivers/misc/mediatek/trustzone/tz_fileio.h

   1 #ifndef DRIVER_FILE_PR_IO_H
   2 #define DRIVER_FILE_PR_IO_H
   3 #include <linux/fs.h>
   4 #include <asm/segment.h>
   5 #include <asm/uaccess.h>
   6 #include <linux/buffer_head.h>
   7 #define UINT64 unsigned long long
   8 #define INT64 long long
   9 /** FILE_Open
  10  *  Open a file for read or write
  11  *
  12  *  @param  path         File path to open
  13  *  @param  flags        Access flag see open(2)
  14  *  @param  mode         The mode/permission for created file, see open(2)
  15  *  @retval              File handle
  16  */
  17 struct file *FILE_Open(const char *path, int flags, int mode);
  18
  19 /** FILE_Read
  20  *  Read data from a file.
  21  *
  22  *  @param  file         Opened file handle
  23  *  @param  offset       Pointer to begin offset to read.
  24  *  @param  data         user's buffer address.
  25  *  @param  size         readdata length in bytes.
  26  *  @retval   >0         SUCCESS, return actual bytes read.
  27  *  @retval   <0         Fail, errno
  28  */
  29 int FILE_Read(struct file *file, unsigned char *data, unsigned int size, unsigned long long *offset);
  30
  31 /** FILE_Write
  32  *  Write data from a file.
  33  *
  34  *  @param  file         Opened file handle
  35  *  @param  offset       Pointer to begin offset to Write.
  36  *  @param  data         user's buffer address.
  37  *  @param  size         Writedata length in bytes.
  38  *  @retval   >0         SUCCESS, return actual bytes Write.
  39  *  @retval   <0         Fail, errno
  40  */
  41 int FILE_Write(struct file *file, unsigned char *data, unsigned int size, unsigned long long *offset);
  42
  43 /** FILE_ReadData
  44  *  Read data from a file.
  45  *
  46  *  @param  path         File path name to read.
  47  *  @param  u4Offset     begin offset to read.
  48  *  @param  pData        user's buffer address.
  49  *  @param  i4Length     readdata length in bytes.
  50  *  @retval   >0         SUCCESS, return actual bytes read.
  51  *  @retval   <0         Fail, errno
  52  */
  53 int FILE_ReadData(const char *path, unsigned int u4Offset, char *pData, int i4Length);
  54
  55
  56 /** FILE_WriteData
  57  *  Write data to a file.
  58  *
  59  *  @param  path         File path name to write.
  60  *  @param  u4Offset     begin offset to write.
  61  *  @param  pData        user's buffer address.
  62  *  @param  i4Length     writedata length in bytes.
  63  *  @retval   >0         SUCCESS, return actual bytes writen.
  64  *  @retval   <0         Fail, errno
  65  */
  66 int FILE_WriteData(const char *path, unsigned int u4Offset, char *pData, int i4Length);
  67 #endif