rtems-rfs-rtems.h

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/*
 *  COPYRIGHT (c) 2010 Chris Johns <chrisj@rtems.org>
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 */

#if !defined(RTEMS_RFS_RTEMS_DEFINED)
#define RTEMS_RFS_RTEMS_DEFINED

#include <stdbool.h>
#include <stdint.h>
#include <errno.h>

#define RTEMS_RFS_RTEMS_ERROR 0

#define RTEMS_RFS_RTEMS_TRACE 0

#if !RTEMS_RFS_RTEMS_ERROR
#define rtems_rfs_rtems_error(_m, _e) \
  (((errno = (_e)) == 0) ? 0 : -1)
#else

int rtems_rfs_rtems_error (const char* mesg, int error);
#endif

#define RTEMS_RFS_RTEMS_DEBUG_ALL           (0xffffffff)
#define RTEMS_RFS_RTEMS_DEBUG_ERROR_MSGS    (1 << 0)
#define RTEMS_RFS_RTEMS_DEBUG_EVAL_PATH     (1 << 1)
#define RTEMS_RFS_RTEMS_DEBUG_EVAL_FOR_MAKE (1 << 2)
#define RTEMS_RFS_RTEMS_DEBUG_EVAL_PERMS    (1 << 3)
#define RTEMS_RFS_RTEMS_DEBUG_MKNOD         (1 << 4)
#define RTEMS_RFS_RTEMS_DEBUG_RMNOD         (1 << 5)
#define RTEMS_RFS_RTEMS_DEBUG_LINK          (1 << 6)
#define RTEMS_RFS_RTEMS_DEBUG_UNLINK        (1 << 7)
#define RTEMS_RFS_RTEMS_DEBUG_CHOWN         (1 << 8)
#define RTEMS_RFS_RTEMS_DEBUG_READLINK      (1 << 9)
#define RTEMS_RFS_RTEMS_DEBUG_FCHMOD        (1 << 10)
#define RTEMS_RFS_RTEMS_DEBUG_STAT          (1 << 11)
#define RTEMS_RFS_RTEMS_DEBUG_RENAME        (1 << 12)
#define RTEMS_RFS_RTEMS_DEBUG_DIR_RMNOD     (1 << 13)
#define RTEMS_RFS_RTEMS_DEBUG_FILE_OPEN     (1 << 14)
#define RTEMS_RFS_RTEMS_DEBUG_FILE_CLOSE    (1 << 15)
#define RTEMS_RFS_RTEMS_DEBUG_FILE_READ     (1 << 16)
#define RTEMS_RFS_RTEMS_DEBUG_FILE_WRITE    (1 << 17)
#define RTEMS_RFS_RTEMS_DEBUG_FILE_LSEEK    (1 << 18)
#define RTEMS_RFS_RTEMS_DEBUG_FILE_FTRUNC   (1 << 19)

#if RTEMS_RFS_RTEMS_TRACE
bool rtems_rfs_rtems_trace (uint32_t mask);
#else
#define rtems_rfs_rtems_trace(_m) (0)
#endif

#if RTEMS_RFS_RTEMS_TRACE
void rtems_rfs_rtems_trace_set_mask (uint32_t mask);
#else
#define rtems_rfs_rtems_trace_set_mask(_m)
#endif

#if RTEMS_RFS_RTEMS_TRACE
void rtems_rfs_rtems_trace_clear_mask (uint32_t mask);
#else
#define rtems_rfs_rtems_trace_clear_mask(_m)
#endif

#if RTEMS_RFS_RTEMS_TRACE
int rtems_rfs_rtems_trace_shell_command (int argc, char *argv[]);
#endif

#include <rtems/rfs/rtems-rfs-file-system.h>
#include <rtems/rfs/rtems-rfs-inode.h>
#include <rtems/rfs/rtems-rfs-mutex.h>
#include <rtems/libio_.h>
#include <rtems/fs.h>

typedef struct rtems_rfs_rtems_private
{
  rtems_rfs_mutex access;
} rtems_rfs_rtems_private;
#define rtems_rfs_rtems_pathloc_dev(_loc) \
  ((rtems_rfs_file_system*)((_loc)->mt_entry->fs_info))

#define rtems_rfs_rtems_set_pathloc_ino(_loc, _ino) \
  (_loc)->node_access = (void*)((intptr_t)(_ino))

#define rtems_rfs_rtems_get_pathloc_ino(_loc) \
  ((rtems_rfs_ino) (intptr_t)((_loc)->node_access))

#define rtems_rfs_rtems_set_pathloc_doff(_loc, _doff) \
  (_loc)->node_access_2 = (void*)((intptr_t)(_doff))

#define rtems_rfs_rtems_get_pathloc_doff(_loc) \
  ((uint32_t) (intptr_t)((_loc)->node_access_2))

#define rtems_rfs_rtems_get_iop_ino(_iop) \
  ((intptr_t)(_iop)->pathinfo.node_access)

#define rtems_rfs_rtems_get_iop_file_handle(_iop) \
  ((rtems_rfs_file_handle*)(_iop)->pathinfo.node_access_2)

#define rtems_rfs_rtems_set_iop_file_handle(_iop, _fh) \
  (_iop)->pathinfo.node_access_2 = (_fh)

#define rtems_rfs_rtems_handlers(_h) \
  &rtems_rfs_rtems_ ## _h ## _handlers

bool rtems_rfs_rtems_set_handlers (rtems_filesystem_location_info_t* pathloc,
                                   rtems_rfs_inode_handle*           inode);

uint16_t rtems_rfs_rtems_imode (mode_t mode);

mode_t rtems_rfs_rtems_mode (int imode);

static inline void
 rtems_rfs_rtems_lock (rtems_rfs_file_system* fs)
{
  rtems_rfs_rtems_private* rtems = rtems_rfs_fs_user (fs);
  rtems_rfs_mutex_lock (&rtems->access);
}

static inline void
 rtems_rfs_rtems_unlock (rtems_rfs_file_system* fs)
{
  rtems_rfs_rtems_private* rtems = rtems_rfs_fs_user (fs);
  rtems_rfs_buffers_release (fs);
  rtems_rfs_mutex_unlock (&rtems->access);
}

extern const rtems_filesystem_file_handlers_r rtems_rfs_rtems_dir_handlers;
extern const rtems_filesystem_file_handlers_r rtems_rfs_rtems_device_handlers;
extern const rtems_filesystem_file_handlers_r rtems_rfs_rtems_link_handlers;
extern const rtems_filesystem_file_handlers_r rtems_rfs_rtems_file_handlers;

int rtems_rfs_rtems_fstat (const rtems_filesystem_location_info_t* pathloc,
                           struct stat*                            buf);

int rtems_rfs_rtems_rmnod (const rtems_filesystem_location_info_t* parent_pathloc,
                           const rtems_filesystem_location_info_t* pathloc);

int rtems_rfs_rtems_fdatasync (rtems_libio_t* iop);

#endif