summaryrefslogtreecommitdiff
path: root/source3/smbd/vfs.c
diff options
context:
space:
mode:
Diffstat (limited to 'source3/smbd/vfs.c')
-rw-r--r--source3/smbd/vfs.c379
1 files changed, 0 insertions, 379 deletions
diff --git a/source3/smbd/vfs.c b/source3/smbd/vfs.c
deleted file mode 100644
index 95bb4c9414..0000000000
--- a/source3/smbd/vfs.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
- Unix SMB/Netbios implementation.
- Version 1.9.
- VFS initialisation and support functions
- Copyright (C) Tim Potter 1999
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include "includes.h"
-#ifdef HAVE_LIBDL
-#include <dlfcn.h>
-#endif
-
-extern int DEBUGLEVEL;
-
-/* Some structures to help us initialise the vfs operations table */
-
-struct vfs_syminfo {
- char *name;
- void *fptr;
-};
-
-/* Default vfs hooks. WARNING: The order of these initialisers is
- very important. They must be in the same order as defined in
- vfs.h. Change at your own peril. */
-
-struct vfs_ops default_vfs_ops = {
-
- /* Disk operations */
-
- vfswrap_dummy_connect,
- vfswrap_dummy_disconnect,
- vfswrap_disk_free,
-
- /* Directory operations */
-
- vfswrap_opendir,
- vfswrap_readdir,
- vfswrap_mkdir,
- vfswrap_rmdir,
- vfswrap_closedir,
-
- /* File operations */
-
- vfswrap_open,
- vfswrap_close,
- vfswrap_read,
- vfswrap_write,
- vfswrap_lseek,
- vfswrap_rename,
- vfswrap_sync_file,
- vfswrap_stat,
- vfswrap_fstat,
- vfswrap_lstat,
- vfswrap_fcntl_lock,
- vfswrap_unlink,
- vfswrap_chmod,
- vfswrap_utime
-};
-
-/****************************************************************************
- initialise default vfs hooks
-****************************************************************************/
-int vfs_init_default(connection_struct *conn)
-{
- DEBUG(3, ("Initialising default vfs hooks\n"));
-
- memcpy(&conn->vfs_ops, &default_vfs_ops, sizeof(conn->vfs_ops));
- return True;
-}
-
-/****************************************************************************
- initialise custom vfs hooks
-****************************************************************************/
-#ifdef HAVE_LIBDL
-BOOL vfs_init_custom(connection_struct *conn)
-{
- void *handle;
- struct vfs_ops *ops, *(*fptr)(struct vfs_options *options);
-
- DEBUG(3, ("Initialising custom vfs hooks from %s\n",
- lp_vfsobj(SNUM(conn))));
-
- /* Open object file */
-
- handle = dlopen(lp_vfsobj(SNUM(conn)), RTLD_NOW);
- if (!handle) {
- DEBUG(0, ("Error opening %s: %s\n", lp_vfsobj(SNUM(conn)),
- dlerror()));
- return False;
- }
-
- /* Get handle on vfs_init() symbol */
-
- fptr = dlsym(handle, "vfs_init");
- if (fptr == NULL) {
- DEBUG(0, ("No vfs_init() symbol found in %s\n",
- lp_vfsobj(SNUM(conn))));
- return False;
- }
-
- dlclose(handle);
-
- /* Initialise vfs_ops structure */
-
- if ((ops = fptr(lp_vfsoptions(SNUM(conn)))) == NULL) {
- return False;
- }
-
- /* Fill in unused operations with default (disk based) ones.
- There's probably a neater way to do this then a whole bunch of
- if statements. */
-
- memcpy(&conn->vfs_ops, ops, sizeof(conn->vfs_ops));
-
- if (conn->vfs_ops.connect == NULL) {
- conn->vfs_ops.connect = default_vfs_ops.connect;
- }
-
- if (conn->vfs_ops.disconnect == NULL) {
- conn->vfs_ops.disconnect = default_vfs_ops.disconnect;
- }
-
- if (conn->vfs_ops.disk_free == NULL) {
- conn->vfs_ops.disk_free = default_vfs_ops.disk_free;
- }
-
- if (conn->vfs_ops.opendir == NULL) {
- conn->vfs_ops.opendir = default_vfs_ops.opendir;
- }
-
- if (conn->vfs_ops.readdir == NULL) {
- conn->vfs_ops.readdir = default_vfs_ops.readdir;
- }
-
- if (conn->vfs_ops.mkdir == NULL) {
- conn->vfs_ops.mkdir = default_vfs_ops.mkdir;
- }
-
- if (conn->vfs_ops.rmdir == NULL) {
- conn->vfs_ops.rmdir = default_vfs_ops.rmdir;
- }
-
- if (conn->vfs_ops.closedir == NULL) {
- conn->vfs_ops.closedir = default_vfs_ops.closedir;
- }
-
- if (conn->vfs_ops.open == NULL) {
- conn->vfs_ops.open = default_vfs_ops.open;
- }
-
- if (conn->vfs_ops.close == NULL) {
- conn->vfs_ops.close = default_vfs_ops.close;
- }
-
- if (conn->vfs_ops.read == NULL) {
- conn->vfs_ops.read = default_vfs_ops.read;
- }
-
- if (conn->vfs_ops.write == NULL) {
- conn->vfs_ops.write = default_vfs_ops.write;
- }
-
- if (conn->vfs_ops.lseek == NULL) {
- conn->vfs_ops.lseek = default_vfs_ops.lseek;
- }
-
- if (conn->vfs_ops.rename == NULL) {
- conn->vfs_ops.rename = default_vfs_ops.rename;
- }
-
- if (conn->vfs_ops.sync == NULL) {
- conn->vfs_ops.sync = default_vfs_ops.sync;
- }
-
- if (conn->vfs_ops.stat == NULL) {
- conn->vfs_ops.stat = default_vfs_ops.stat;
- }
-
- if (conn->vfs_ops.fstat == NULL) {
- conn->vfs_ops.fstat = default_vfs_ops.fstat;
- }
-
- if (conn->vfs_ops.lstat == NULL) {
- conn->vfs_ops.lstat = default_vfs_ops.lstat;
- }
-
- if (conn->vfs_ops.lock == NULL) {
- conn->vfs_ops.lock = default_vfs_ops.lock;
- }
-
- if (conn->vfs_ops.unlink == NULL) {
- conn->vfs_ops.unlink = default_vfs_ops.unlink;
- }
-
- if (conn->vfs_ops.chmod == NULL) {
- conn->vfs_ops.chmod = default_vfs_ops.chmod;
- }
-
- if (conn->vfs_ops.utime == NULL) {
- conn->vfs_ops.utime = default_vfs_ops.utime;
- }
-
- return True;
-}
-#endif
-
-/*******************************************************************
- check if a vfs file exists
-********************************************************************/
-BOOL vfs_file_exist(connection_struct *conn,char *fname,SMB_STRUCT_STAT *sbuf)
-{
- SMB_STRUCT_STAT st;
- if (!sbuf) sbuf = &st;
-
- if (conn->vfs_ops.stat(fname,sbuf) != 0)
- return(False);
-
- return(S_ISREG(sbuf->st_mode));
-}
-
-/****************************************************************************
- write data to a fd on the vfs
-****************************************************************************/
-ssize_t vfs_write_data(files_struct *fsp,char *buffer,size_t N)
-{
- size_t total=0;
- ssize_t ret;
- int fd = fsp->fd_ptr->fd;
-
- while (total < N)
- {
- ret = fsp->conn->vfs_ops.write(fd,buffer + total,N - total);
-
- if (ret == -1) return -1;
- if (ret == 0) return total;
-
- total += ret;
- }
- return (ssize_t)total;
-}
-
-/****************************************************************************
-transfer some data between two file_struct's
-****************************************************************************/
-SMB_OFF_T vfs_transfer_file(int in_fd, files_struct *in_fsp,
- int out_fd, files_struct *out_fsp,
- SMB_OFF_T n, char *header, int headlen, int align)
-{
- static char *buf=NULL;
- static int size=0;
- char *buf1,*abuf;
- SMB_OFF_T total = 0;
-
- DEBUG(4,("vfs_transfer_file n=%.0f (head=%d) called\n",(double)n,headlen));
-
- /* Check we have at least somewhere to read from */
-
- SMB_ASSERT((in_fd != -1) || (in_fsp != NULL));
-
- if (size == 0) {
- size = lp_readsize();
- size = MAX(size,1024);
- }
-
- while (!buf && size>0) {
- buf = (char *)Realloc(buf,size+8);
- if (!buf) size /= 2;
- }
-
- if (!buf) {
- DEBUG(0,("Can't allocate transfer buffer!\n"));
- exit(1);
- }
-
- abuf = buf + (align%8);
-
- if (header)
- n += headlen;
-
- while (n > 0)
- {
- int s = (int)MIN(n,(SMB_OFF_T)size);
- int ret,ret2=0;
-
- ret = 0;
-
- if (header && (headlen >= MIN(s,1024))) {
- buf1 = header;
- s = headlen;
- ret = headlen;
- headlen = 0;
- header = NULL;
- } else {
- buf1 = abuf;
- }
-
- if (header && headlen > 0)
- {
- ret = MIN(headlen,size);
- memcpy(buf1,header,ret);
- headlen -= ret;
- header += ret;
- if (headlen <= 0) header = NULL;
- }
-
- if (s > ret) {
- ret += in_fsp ?
- in_fsp->conn->vfs_ops.read(in_fsp->fd_ptr->fd,buf1+ret,s-ret) : read(in_fd,buf1+ret,s-ret);
- }
-
- if (ret > 0)
- {
- if (out_fsp) {
- ret2 = out_fsp->conn->vfs_ops.write(out_fsp->fd_ptr->fd,buf1,ret);
- } else {
- ret2= (out_fd != -1) ? write_data(out_fd,buf1,ret) : ret;
- }
- }
-
- if (ret2 > 0) total += ret2;
- /* if we can't write then dump excess data */
- if (ret2 != ret)
- vfs_transfer_file(in_fd, in_fsp, -1,NULL,n-(ret+headlen),NULL,0,0);
-
- if (ret <= 0 || ret2 != ret)
- return(total);
- n -= ret;
- }
- return(total);
-}
-
-/*******************************************************************
-a vfs_readdir wrapper which just returns the file name
-********************************************************************/
-char *vfs_readdirname(connection_struct *conn, void *p)
-{
- struct dirent *ptr;
- char *dname;
-
- if (!p) return(NULL);
-
- ptr = (struct dirent *)conn->vfs_ops.readdir(p);
- if (!ptr) return(NULL);
-
- dname = ptr->d_name;
-
-#ifdef NEXT2
- if (telldir(p) < 0) return(NULL);
-#endif
-
-#ifdef HAVE_BROKEN_READDIR
- /* using /usr/ucb/cc is BAD */
- dname = dname - 2;
-#endif
-
- {
- static pstring buf;
- memcpy(buf, dname, NAMLEN(ptr)+1);
- unix_to_dos(buf, True);
- dname = buf;
- }
-
- unix_to_dos(dname, True);
- return(dname);
-}
generated by cgit (git 2.34.1) at 2024-07-03 02:16:12 +0000