nfs.c File Reference

NFS Client Implementation for RTEMS. More...

#include <rtems.h>
#include <rtems/libio.h>
#include <rtems/libio_.h>
#include <rtems/seterr.h>
#include <rtems/thread.h>
#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <sys/stat.h>
#include <dirent.h>
#include <netdb.h>
#include <ctype.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "../proto/nfs_prot.h"
#include "../proto/mount_prot.h"
#include "rpcio.h"
#include "librtemsNfs.h"

Data Structures
struct	strbuf
struct	readlinkres_strbuf
struct	DirInfoRec_
struct	serporidok
struct	serporid
struct	NfsRec_
struct	NfsNodeRec_
struct	nfsstats
struct	ResolvePathArgRec_

Macros
#define	CONFIG_AVG_NAMLEN   10
#define	CONFIG_NFS_SMALL_XACT_SIZE   800 /* size of RPC arguments for non-write ops */
#define	CONFIG_ATTR_LIFETIME   10/*secs*/
#define	DEFAULT_NFS_ST_BLKSIZE   NFS_MAXDATA
#define	CONFIG_NFS_BIG_XACT_SIZE   UDPMSGSIZE /* dont change this */
#define	NFSCALL_TIMEOUT   (&_nfscalltimeout)
#define	MNTCALL_TIMEOUT   (&_nfscalltimeout)
#define	DELIM   '/'
#define	HOSTDELIM   ':'
#define	UPDIR   ".."
#define	UIDSEP   '@'
#define	NFS_VERSION_2   NFS_VERSION
#define	NFS_MAJOR   (nfsGlob.nfs_major)
#define	NFS_MAKE_DEV_T_INO_HACK(node)
#define	NFS_MAKE_DEV_T(node)
#define	DIRENT_HEADER_SIZE
#define	DEBUG_COUNT_NODES   (1<<0)
#define	DEBUG_TRACK_NODES   (1<<1)
#define	DEBUG_EVALPATH   (1<<2)
#define	DEBUG_READDIR   (1<<3)
#define	DEBUG_SYSCALLS   (1<<4)
#define	STATIC   static
#define	LOCK(s)   rtems_recursive_mutex_lock(&(s))
#define	UNLOCK(s)   rtems_recursive_mutex_unlock(&(s))
#define	NFS_GLOBAL_ACQUIRE(lock_context)   rtems_interrupt_lock_acquire(&nfs_global_lock, lock_context)
#define	NFS_GLOBAL_RELEASE(lock_context)   rtems_interrupt_lock_release(&nfs_global_lock, lock_context)
#define	SERP_ARGS(node)   ((node)->serporid.serporid_u.serporid.arg_u)
#define	SERP_ATTR(node)   ((node)->serporid.serporid_u.serporid.attributes)
#define	SERP_FILE(node)   ((node)->serporid.serporid_u.serporid.file)
#define	READ_LONG_IS_ATOMIC
#define	SATTR_MODE   (1<<0)
#define	SATTR_UID   (1<<1)
#define	SATTR_GID   (1<<2)
#define	SATTR_SIZE   (1<<3)
#define	SATTR_ATIME   (1<<4)
#define	SATTR_TOUCHA   (1<<5)
#define	SATTR_MTIME   (1<<6)
#define	SATTR_TOUCHM   (1<<7)
#define	SATTR_TOUCH   (SATTR_TOUCHM | SATTR_TOUCHA)

Typedefs
typedef struct strbuf	strbuf
typedef struct readlinkres_strbuf	readlinkres_strbuf
typedef struct DirInfoRec_	DirInfoRec
typedef struct DirInfoRec_ *	DirInfo
typedef struct serporidok	serporidok
typedef struct serporid	serporid
typedef uint32_t	TimeStamp
typedef struct NfsRec_	NfsRec
typedef struct NfsRec_ *	Nfs
typedef struct NfsNodeRec_	NfsNodeRec
typedef struct NfsNodeRec_ *	NfsNode
typedef struct ResolvePathArgRec_	ResolvePathArgRec
typedef struct ResolvePathArgRec_ *	ResolvePathArg

Functions
int	nfsMountsShow (FILE *)
rtems_status_code	rtems_filesystem_resolve_location (char *buf, int len, rtems_filesystem_location_info_t *loc)
int	nfsInit (int smallPoolDepth, int bigPoolDepth)
int	nfsCleanup (void)
STATIC int	nfscall (RpcUdpServer srvr, int proc, xdrproc_t xargs, void *pargs, xdrproc_t xres, void *pres)
int	rtems_nfs_initialize (rtems_filesystem_mount_table_entry_t *mt_entry, const void *data)
STATIC void	nfs_fsunmount_me (rtems_filesystem_mount_table_entry_t *mt_entry)
int	nfsSetTimeout (uint32_t timeout_ms)
uint32_t	nfsGetTimeout (void)

Variables
const struct _rtems_filesystem_operations_table	nfs_fs_ops
int	nfsStBlksize = DEFAULT_NFS_ST_BLKSIZE

Detailed Description

NFS Client Implementation for RTEMS.

Hooks Into the RTEMS NFS Filesystem

Macro Definition Documentation

DIRENT_HEADER_SIZE

#define DIRENT_HEADER_SIZE

Value:

( sizeof(struct dirent) - \
            sizeof( ((struct dirent *)0)->d_name ) )

NFS_MAKE_DEV_T

#define NFS_MAKE_DEV_T

(

node

)

Value:

rtems_filesystem_make_dev_t( NFS_MAJOR, \
            (((rtems_device_minor_number)((node)->nfs->id))<<16) | (SERP_ATTR((node)).fsid & (((rtems_device_minor_number)1<<16)-1)) )

NFS_MAKE_DEV_T_INO_HACK

#define NFS_MAKE_DEV_T_INO_HACK

(

node

)

Value:

rtems_filesystem_make_dev_t( NFS_MAJOR, \
            (((rtems_device_minor_number)((node)->nfs->id))<<16) | (((rtems_device_minor_number)SERP_ATTR((node)).fileid) >> 16) )

Variable Documentation

nfs_fs_ops

const struct _rtems_filesystem_operations_table nfs_fs_ops

Initial value:

= {
    .lock_h         = nfs_lock,
    .unlock_h       = nfs_unlock,
    .eval_path_h    = nfs_eval_path,
    .link_h         = nfs_link,
    .are_nodes_equal_h = nfs_are_nodes_equal,
    .mknod_h        = nfs_mknod,
    .rmnod_h        = nfs_rmnod,
    .fchmod_h       = nfs_fchmod,
    .chown_h        = nfs_chown,
    .clonenod_h     = nfs_clonenode,
    .freenod_h      = nfs_freenode,
    .mount_h        = rtems_filesystem_default_mount,
    .unmount_h      = rtems_filesystem_default_unmount,
    .fsunmount_me_h = nfs_fsunmount_me,
    .utime_h        = nfs_utime,
    .symlink_h      = nfs_symlink,
    .readlink_h     = nfs_readlink,
    .rename_h       = nfs_rename,
    .statvfs_h      = rtems_filesystem_default_statvfs
}