mc/vfs/local.c

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4.8 KiB
C
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1998-02-27 07:54:42 +03:00
#include <config.h>
#include <errno.h>
#include <sys/types.h>
#include <malloc.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include "../src/mad.h"
#include "../src/fs.h"
#include <fcntl.h>
#include "../src/util.h"
#include "vfs.h"
static void *local_open (char *file, int flags, int mode)
{
int *local_info;
int fd;
fd = open (file, flags, mode);
if (fd == -1)
return 0;
local_info = (int *) xmalloc (sizeof (int), "Local fs");
*local_info = fd;
return local_info;
}
static int local_read (void *data, char *buffer, int count)
{
int n;
if (!data)
return -1;
while ((n = read (*((int *) data), buffer, count)) == -1){
#ifdef EAGAIN
if (errno == EAGAIN) continue;
#endif
#ifdef EINTR
if (errno == EINTR) continue;
#endif
return -1;
}
return n;
}
static int local_close (void *data)
{
int fd;
if (!data)
return -1;
fd = *(int *) data;
free (data);
return close (fd);
}
static int local_errno (void)
{
return errno;
}
static void *local_opendir (char *dirname)
{
DIR **local_info;
DIR *dir;
dir = opendir (dirname);
if (!dir)
return 0;
local_info = (DIR **) xmalloc (sizeof (DIR *), "Local fs");
*local_info = dir;
return local_info;
}
static int local_telldir (void *data)
{
return telldir( *(DIR **) data );
}
static void local_seekdir (void *data, int offset)
{
seekdir( *(DIR **) data, offset );
}
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static void *local_readdir (void *data)
{
return readdir (*(DIR **) data);
}
static int local_closedir (void *data)
{
int i;
i = closedir (* (DIR **) data);
if (data)
free (data);
return i;
}
static int local_stat (char *path, struct stat *buf)
{
return stat (path, buf);
}
static int local_lstat (char *path, struct stat *buf)
{
#ifndef HAVE_STATLSTAT
return lstat (path,buf);
#else
return statlstat (path, buf);
#endif
}
static int local_fstat (void *data, struct stat *buf)
{
return fstat (*((int *) data), buf);
}
static int local_chmod (char *path, int mode)
{
return chmod (path, mode);
}
static int local_chown (char *path, int owner, int group)
{
return chown (path, owner, group);
}
static int local_utime (char *path, struct utimbuf *times)
{
return utime (path, times);
}
static int local_readlink (char *path, char *buf, int size)
{
return readlink (path, buf, size);
}
static int local_unlink (char *path)
{
return unlink (path);
}
static int local_symlink (char *n1, char *n2)
{
return symlink (n1, n2);
}
static int local_write (void *data, char *buf, int nbyte)
{
int fd;
int n;
if (!data)
return -1;
fd = * (int *) data;
while ((n = write (fd, buf, nbyte)) == -1){
#ifdef EAGAIN
if (errno == EAGAIN) continue;
#endif
#ifdef EINTR
if (errno == EINTR) continue;
#endif
break;
}
return n;
}
static int local_rename (char *a, char *b)
{
return rename (a, b);
}
static int local_chdir (char *path)
{
return chdir (path);
}
static int local_lseek (void *data, off_t offset, int whence)
{
int fd = * (int *) data;
return lseek (fd, offset, whence);
}
static int local_mknod (char *path, int mode, int dev)
{
return mknod (path, mode, dev);
}
static int local_link (char *p1, char *p2)
{
return link (p1, p2);
}
static int local_mkdir (char *path, mode_t mode)
{
return mkdir (path, mode);
}
static int local_rmdir (char *path)
{
return rmdir (path);
}
static vfsid local_getid (char *path, struct vfs_stamping **parent)
{
*parent = NULL;
return (vfsid) -1; /* We do not free local fs stuff at all */
}
static int local_nothingisopen (vfsid id)
{
return 0;
}
static void local_free (vfsid id)
{
}
static char *local_getlocalcopy (char *path)
{
return strdup (path);
}
static void local_ungetlocalcopy (char *path, char *local, int has_changed)
{
}
#ifdef HAVE_MMAP
static caddr_t local_mmap (caddr_t addr, size_t len, int prot, int flags, void *data, off_t offset)
{
int fd = * (int *)data;
return mmap (addr, len, prot, flags, fd, offset);
}
static int local_munmap (caddr_t addr, size_t len, void *data)
{
return munmap (addr, len);
}
#endif
vfs local_vfs_ops = {
local_open,
local_close,
local_read,
local_write,
local_opendir,
local_readdir,
local_closedir,
local_telldir,
local_seekdir,
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local_stat,
local_lstat,
local_fstat,
local_chmod,
local_chown,
local_utime,
local_readlink,
local_symlink,
local_link,
local_unlink,
local_rename,
local_chdir,
local_errno,
local_lseek,
local_mknod,
local_getid,
local_nothingisopen,
local_free,
local_getlocalcopy,
local_ungetlocalcopy,
local_mkdir,
local_rmdir,
NULL,
NULL,
NULL
#ifdef HAVE_MMAP
,local_mmap,
local_munmap
#endif
};