Attachment 4887 Details for Bug 6819 – the source file of the vfs module

the source file of the vfs module

dnacopy.c (text/x-csrc), 8.77 KB, created by Daniel De Baerdemaeker on 2009-10-26 05:27:14 UTC

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Creator: Daniel De Baerdemaeker

Created: 2009-10-26 05:27:14 UTC

Size: 8.77 KB

patch

obsolete

>/*
> * Skeleton VFS module.  Implements passthrough operation of all VFS
> * calls to disk functions.
> *
> * Copyright (C) Tim Potter, 1999-2000
> * Copyright (C) Alexander Bokovoy, 2002
> * Copyright (C) Stefan (metze) Metzmacher, 2003
> *
> * 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 3 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, see <http://www.gnu.org/licenses/>.
> */
>
>
>#include "includes.h"
>#include <string.h>
>#undef DBGC_CLASS
>#define DBGC_CLASS DBGC_VFS
>
>/* PLEASE,PLEASE READ THE VFS MODULES CHAPTER OF THE 
>   SAMBA DEVELOPERS GUIDE!!!!!!
> */
>
>/* If you take this file as template for your module
> * please make sure that you remove all functions you didn't
> * want to implement!!
> *
> * This passthrough operations are useless in reall vfs modules!
> *
> * --metze
> */
>
>
>static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user);
>static void audit_disconnect(vfs_handle_struct *handle);
>struct file_mod_info
>{
>        bool write;	/*  open for write */
>        char* fn;	/* filename */
>};
>
>static size_t av_strlcpy(char *dst, const char *src, size_t size)
>{
>    size_t len = 0;
>	size++;
>    while (++len < size && *src)
>        *dst++ = *src++;
>    if (len <= size)
>        *dst = 0;
>    return len - 1;
>}
>
>void av_pathtofile(char *dst, const char *src)
>{
>    	
>    size_t len = strlen(src);
>    av_strlcpy(dst,src,len);
>
>	len--;
>    while (--len > 0 && *src) {
>    
>	if (dst[len] == '/') {
>        dst[len] = 0;
>	break;
>	}
>    }
>}
>
>static void free_privates(void **datap)
>{
>	struct file_mod_info *data = (struct file_mod_info *)*datap;
>	
>	SAFE_FREE(data->fn);
>	SAFE_FREE(data);
>	
>	*datap = NULL;
>	
>	return;
>}
>
>
>
>static int audit_syslog_facility(vfs_handle_struct *handle)
>{
>	static const struct enum_list enum_log_facilities[] = {
>		{ LOG_USER, "USER" },
>		{ LOG_LOCAL0, "LOCAL0" },
>		{ LOG_LOCAL1, "LOCAL1" },
>		{ LOG_LOCAL2, "LOCAL2" },
>		{ LOG_LOCAL3, "LOCAL3" },
>		{ LOG_LOCAL4, "LOCAL4" },
>		{ LOG_LOCAL5, "LOCAL5" },
>		{ LOG_LOCAL6, "LOCAL6" },
>		{ LOG_LOCAL7, "LOCAL7" }
>	};
>
>	int facility;
>
>	facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
>
>	return facility;
>}
>
>static int audit_syslog_priority(vfs_handle_struct *handle)
>{
>	static const struct enum_list enum_log_priorities[] = {
>		{ LOG_EMERG, "EMERG" },
>		{ LOG_ALERT, "ALERT" },
>		{ LOG_CRIT, "CRIT" },
>		{ LOG_ERR, "ERR" },
>		{ LOG_WARNING, "WARNING" },
>		{ LOG_NOTICE, "NOTICE" },
>		{ LOG_INFO, "INFO" },
>		{ LOG_DEBUG, "DEBUG" }
>	};
>
>	int priority;
>
>	priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
>				enum_log_priorities, LOG_NOTICE);
>	if (priority == -1) {
>		priority = LOG_WARNING;
>	}
>
>	return priority;
>}
>
>/* Implementation of vfs_oint ps.  Pass everything on to the default
>   operation but log event first. */
>
>static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
>{
>	int result;
>	
>	openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
>
>	syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n", 
>	       svc, user);
>
>	result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
>
>	return result;
>}
>
>static void audit_disconnect(vfs_handle_struct *handle)
>{
>	syslog(audit_syslog_priority(handle), "disconnected\n");
>	SMB_VFS_NEXT_DISCONNECT(handle);
>
>	return;
>}
>
>static int skel_mkdir(vfs_handle_struct *handle,  const char *path, mode_t mode)
>{
>	return SMB_VFS_NEXT_MKDIR(handle, path, mode);
>	pid_t pid;
>	switch(pid=fork()){
>		case -1: syslog(audit_syslog_priority(handle), "unablet to fork");
>		case 0 : execl(handle->param, handle->param,"mkdir", path,(char *) 0);
>		default: ;  
>     	}
>}
>
>static int skel_open(vfs_handle_struct *handle,  const char *fname, files_struct *fsp, int flags, mode_t mode)
>{
>	int rc;
>	bool schrijf;
>
>       if ((flags & O_WRONLY) || (flags & O_RDWR)) {  
>
>		char * fn = (char *)malloc(strlen(fname)+1);	      
>		av_strlcpy(fn , fname, strlen(fname));
>	        struct file_mod_info * c;		
>	  	syslog(audit_syslog_priority(handle), "before adding extra info to open %d  %s\n", 
>	       		true,fname);
>
>                c = VFS_ADD_FSP_EXTENSION(handle, fsp, struct file_mod_info,NULL);
>                if (c) {
>                        c->write = true;
>                        c->fn = fn;
>                } 
>	  	syslog(audit_syslog_priority(handle), "adding extra info to open %d  %s\n", 
>	       		c->write,c->fn);
>        
>
>	}  
>        rc = SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
>		
>  	syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n", 
>	       fname, rc,
>	       ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "", 
>	       (rc < 0) ? "failed: " : "",
>	       (rc < 0) ? strerror(errno) : "");
>
>	return rc;
>}
>
>
>static int skel_close(vfs_handle_struct *handle, files_struct *fsp)
>{
>	int result;
>	char pathtofile[200];
>        struct file_mod_info * c;	
> 
>
>	syslog(audit_syslog_priority(handle), "closing fd %d -- origpath : %s -- connectpath : %s -- dirpath : %s -- param : %s  -- : fsp->fsp_name : %s \n",
>	       fsp->fh->fd,fsp->conn->origpath,fsp->conn->connectpath,fsp->conn->dirpath,handle->param,fsp->fsp_name);
>
>	result = SMB_VFS_NEXT_CLOSE(handle, fsp);
>       if ((c = VFS_FETCH_FSP_EXTENSION(handle, fsp)) != NULL) {
>	  	syslog(audit_syslog_priority(handle), "getting extra after close %d  %s\n", 
>	       		c->write,c->fn);
>	av_pathtofile(pathtofile, c->fn);
>	pid_t pid;
>	switch(pid=fork()){
>		case -1: syslog(audit_syslog_priority(handle), "unablet to fork");
>		case 0 : execl(handle->param, handle->param,"save", fsp->conn->origpath, c->fn,pathtofile,(char *) 0);
>		default: ;  
>     	}
>
>	
>
>	SAFE_FREE(c->fn); 
>		
>	}
>	
>	syslog(audit_syslog_priority(handle), "closed fd %d  %s%s \n",
>	       fsp->fh->fd,
>	       (result < 0) ? "failed: " : "",
>	       (result < 0) ? strerror(errno) : "");
>
>	return result;
>}
>
>
>static ssize_t skel_read(vfs_handle_struct *handle, files_struct *fsp, void *data, size_t n)
>{
>	int rc;
>
>	rc = SMB_VFS_NEXT_READ(handle, fsp, data, n);
>  	syslog(audit_syslog_priority(handle), "read %d -- %s with modified : %d  %s%s\n", fsp->fh->fd, fsp->fsp_name, fsp->modified,
>            (rc != 0) ? "failed: " : "",
>            (rc != 0) ? strerror(errno) : "");
>
>	return rc;
>}
>
>
>static ssize_t skel_write(vfs_handle_struct *handle, files_struct *fsp, const void *data, size_t n)
>{
>	int rc;
>	rc = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
>  	syslog(audit_syslog_priority(handle), "write  %d -- %s with modified : %d  %s%s\n", fsp->fh->fd, fsp->fsp_name, fsp->modified,
>            (rc != 0) ? "failed: " : "",
>            (rc != 0) ? strerror(errno) : "");
>	return rc;
>}
>
>
>
>
>static int skel_rename(vfs_handle_struct *handle,  const char *oldname, const char *newname)
>{
>	int rc;
>	char pathtofile[200];
>	rc = SMB_VFS_NEXT_RENAME(handle, oldname, newname);
>  	syslog(audit_syslog_priority(handle), "rename %s -- to -- %s  %d %s %s\n", oldname, newname,rc,
>            (rc != 0) ? "failed: " : "",
>            (rc != 0) ? strerror(errno) : "");
>	pid_t pid;
>	av_pathtofile(pathtofile, newname);
>	switch(pid=fork()){
>	case -1: syslog(audit_syslog_priority(handle), "unablet to fork");break;
>	case 0 :
>		syslog(audit_syslog_priority(handle), "before execl rename"); 	
> 		execl(handle->param, handle->param,"rename", oldname, newname,handle->conn->origpath,pathtofile,(char *) 0); 
>		syslog(audit_syslog_priority(handle), "after execl rename") ;	
>		break;
>	default: ;  
>
>     }
>
>
>
>	return rc;
>}
>
>
>
>/* VFS operations structure */
>
>static vfs_op_tuple skel_op_tuples[] = {
>
>	{SMB_VFS_OP(skel_mkdir),			SMB_VFS_OP_MKDIR,		SMB_VFS_LAYER_TRANSPARENT},
>
>	/* File operations */
>
>	{SMB_VFS_OP(skel_open),				SMB_VFS_OP_OPEN,		SMB_VFS_LAYER_TRANSPARENT},
>	{SMB_VFS_OP(skel_close),			SMB_VFS_OP_CLOSE,		SMB_VFS_LAYER_TRANSPARENT}, 
>	{SMB_VFS_OP(skel_read),				SMB_VFS_OP_READ,		SMB_VFS_LAYER_TRANSPARENT},
>	{SMB_VFS_OP(skel_write),			SMB_VFS_OP_WRITE,		SMB_VFS_LAYER_TRANSPARENT},
>	{SMB_VFS_OP(skel_rename),			SMB_VFS_OP_RENAME,		SMB_VFS_LAYER_TRANSPARENT},
>
>	{NULL,						SMB_VFS_OP_NOOP,			SMB_VFS_LAYER_NOOP}
>};
>
>NTSTATUS init_samba_module(void)
>{
>	return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "dnacopy", skel_op_tuples);
>}

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Attachments on bug 6819: 4886 | 4887