summaryrefslogtreecommitdiff
path: root/source3/smbd/close.c
blob: 50ad01f5755d56f33ce4c13d6d0d61429ad223b4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
/* 
   Unix SMB/Netbios implementation.
   Version 1.9.
   file closing
   Copyright (C) Andrew Tridgell 1992-1998
   
   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"

extern int DEBUGLEVEL;

extern int32 global_oplocks_open;


/****************************************************************************
run a file if it is a magic script
****************************************************************************/
static void check_magic(files_struct *fsp,connection_struct *conn)
{
  if (!*lp_magicscript(SNUM(conn)))
    return;

  DEBUG(5,("checking magic for %s\n",fsp->fsp_name));

  {
    char *p;
    if (!(p = strrchr(fsp->fsp_name,'/')))
      p = fsp->fsp_name;
    else
      p++;

    if (!strequal(lp_magicscript(SNUM(conn)),p))
      return;
  }

  {
    int ret;
    pstring magic_output;
    pstring fname;
    pstrcpy(fname,fsp->fsp_name);

    if (*lp_magicoutput(SNUM(conn)))
      pstrcpy(magic_output,lp_magicoutput(SNUM(conn)));
    else
      slprintf(magic_output,sizeof(fname)-1, "%s.out",fname);

    chmod(fname,0755);
    ret = smbrun(fname,magic_output,False);
    DEBUG(3,("Invoking magic command %s gave %d\n",fname,ret));
    unlink(fname);
  }
}

/****************************************************************************
  Common code to close a file or a directory.
****************************************************************************/
static void close_filestruct(files_struct *fsp)
{   
	connection_struct *conn = fsp->conn;
    
	fsp->open = False;
	fsp->is_directory = False; 
    
	conn->num_files_open--;
	if(fsp->wbmpx_ptr) {  
		free((char *)fsp->wbmpx_ptr);
		fsp->wbmpx_ptr = NULL; 
	}  
     
#if WITH_MMAP
	if(fsp->mmap_ptr) {
		munmap(fsp->mmap_ptr,fsp->mmap_size);
		fsp->mmap_ptr = NULL;
	}  
#endif 
}    

/****************************************************************************
 Close a file - possibly invalidating the read prediction.

 If normal_close is 1 then this came from a normal SMBclose (or equivalent)
 operation otherwise it came as the result of some other operation such as
 the closing of the connection. In the latter case printing and
 magic scripts are not run.
****************************************************************************/
void close_file(files_struct *fsp, BOOL normal_close)
{
	SMB_DEV_T dev = fsp->fd_ptr->dev;
	SMB_INO_T inode = fsp->fd_ptr->inode;
	int token;
    BOOL last_reference = False;
    BOOL delete_on_close = fsp->fd_ptr->delete_on_close;
	connection_struct *conn = fsp->conn;

	remove_pending_lock_requests_by_fid(fsp);

	close_filestruct(fsp);

#if USE_READ_PREDICTION
	invalidate_read_prediction(fsp->fd_ptr->fd);
#endif

	if (lp_share_modes(SNUM(conn))) {
		lock_share_entry(conn, dev, inode, &token);
		del_share_mode(token, fsp);
	}

	if(fd_attempt_close(fsp->fd_ptr) == 0)
		last_reference = True;

    fsp->fd_ptr = NULL;

	if (lp_share_modes(SNUM(conn)))
		unlock_share_entry(conn, dev, inode, token);

	/* NT uses smbclose to start a print - weird */
	if (normal_close && fsp->print_file)
		print_file(conn, fsp);

	/* check for magic scripts */
	if (normal_close) {
		check_magic(fsp,conn);
	}

	/*
	 * NT can set delete_on_close of the last open
	 * reference to a file.
	 */

    if (normal_close && last_reference && delete_on_close) {
        DEBUG(5,("close_file: file %s. Delete on close was set - deleting file.\n"));
		if(dos_unlink(fsp->fsp_name) != 0)
          DEBUG(0,("close_file: file %s. Delete on close was set and unlink failed \
with error %s\n", fsp->fsp_name, strerror(errno) ));
    }

	if(fsp->granted_oplock == True)
		global_oplocks_open--;

	fsp->sent_oplock_break = False;

	DEBUG(2,("%s closed file %s (numopen=%d)\n",
		 conn->user,fsp->fsp_name,
		 conn->num_files_open));

	if (fsp->fsp_name) {
		string_free(&fsp->fsp_name);
	}

	file_free(fsp);
}

/****************************************************************************
 Close a directory opened by an NT SMB call. 
****************************************************************************/
  
void close_directory(files_struct *fsp)
{
	remove_pending_change_notify_requests_by_fid(fsp);

	/*
	 * Do the code common to files and directories.
	 */
	close_filestruct(fsp);
	
	if (fsp->fsp_name)
		string_free(&fsp->fsp_name);
	
	file_free(fsp);
}