eggdrop1.9/src/misc_file.c

/* 
 * misc.c -- handles:
 *   copyfile() movefile()
 * 
 * $Id: misc_file.c,v 1.2 2000/05/13 20:20:29 fabian Exp $
 */
/* 
 * Copyright (C) 1997  Robey Pointer
 * Copyright (C) 1999, 2000  Eggheads
 * 
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include "main.h"
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include "stat.h"


/* Copy a file from one place to another (possibly erasing old copy).
 *
 * returns:  0 if OK
 *       1 if can't open original file
 *       2 if can't open new file
 *       3 if original file isn't normal
 *       4 if ran out of disk space
 */
int copyfile(char *oldpath, char *newpath)
{
  int fi, fo, x;
  char buf[512];
  struct stat st;

#ifndef CYGWIN_HACKS
  fi = open(oldpath, O_RDONLY, 0);
#else
  fi = open(oldpath, O_RDONLY | O_BINARY, 0);
#endif
  if (fi < 0)
    return 1;
  fstat(fi, &st);
  if (!(st.st_mode & S_IFREG))
    return 3;
  fo = creat(newpath, (int) (st.st_mode & 0777));
  if (fo < 0) {
    close(fi);
    return 2;
  }
  for (x = 1; x > 0;) {
    x = read(fi, buf, 512);
    if (x > 0) {
      if (write(fo, buf, x) < x) {  /* Couldn't write */
    close(fo);
    close(fi);
    unlink(newpath);
    return 4;
      }
    }
  }
  close(fo);
  close(fi);
  return 0;
}

int movefile(char *oldpath, char *newpath)
{
  int ret;
  
#ifdef HAVE_RENAME
  /* Try to use rename first */
  if (!rename(oldpath, newpath))
    return 0;
#endif /* HAVE_RENAME */

  /* If that fails, fall back to just copying and then
   * deleting the file.
   */
  ret = copyfile(oldpath, newpath);
  if (!ret)
    unlink(oldpath);
  return ret;
}
1	/*
2	* misc.c -- handles:
3	* copyfile() movefile()
4	*
5	* $Id: misc_file.c,v 1.2 2000/05/13 20:20:29 fabian Exp $
6	*/
7	/*
8	* Copyright (C) 1997 Robey Pointer
9	* Copyright (C) 1999, 2000 Eggheads
10	*
11	* This program is free software; you can redistribute it and/or
12	* modify it under the terms of the GNU General Public License
13	* as published by the Free Software Foundation; either version 2
14	* of the License, or (at your option) any later version.
15	*
16	* This program is distributed in the hope that it will be useful,
17	* but WITHOUT ANY WARRANTY; without even the implied warranty of
18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19	* GNU General Public License for more details.
20	*
21	* You should have received a copy of the GNU General Public License
22	* along with this program; if not, write to the Free Software
23	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24	*/
25
26	#include "main.h"
27	#include <sys/stat.h>
28	#include <unistd.h>
29	#include <fcntl.h>
30	#include "stat.h"
31
32
33	/* Copy a file from one place to another (possibly erasing old copy).
34	*
35	* returns: 0 if OK
36	* 1 if can't open original file
37	* 2 if can't open new file
38	* 3 if original file isn't normal
39	* 4 if ran out of disk space
40	*/
41	int copyfile(char oldpath, char newpath)
42	{
43	int fi, fo, x;
44	char buf[512];
45	struct stat st;
46
47	#ifndef CYGWIN_HACKS
48	fi = open(oldpath, O_RDONLY, 0);
49	#else
50	fi = open(oldpath, O_RDONLY \| O_BINARY, 0);
51	#endif
52	if (fi < 0)
53	return 1;
54	fstat(fi, &st);
55	if (!(st.st_mode & S_IFREG))
56	return 3;
57	fo = creat(newpath, (int) (st.st_mode & 0777));
58	if (fo < 0) {
59	close(fi);
60	return 2;
61	}
62	for (x = 1; x > 0;) {
63	x = read(fi, buf, 512);
64	if (x > 0) {
65	if (write(fo, buf, x) < x) { /* Couldn't write */
66	close(fo);
67	close(fi);
68	unlink(newpath);
69	return 4;
70	}
71	}
72	}
73	close(fo);
74	close(fi);
75	return 0;
76	}
77
78	int movefile(char oldpath, char newpath)
79	{
80	int ret;
81
82	#ifdef HAVE_RENAME
83	/* Try to use rename first */
84	if (!rename(oldpath, newpath))
85	return 0;
86	#endif /* HAVE_RENAME */
87
88	/* If that fails, fall back to just copying and then
89	* deleting the file.
90	*/
91	ret = copyfile(oldpath, newpath);
92	if (!ret)
93	unlink(oldpath);
94	return ret;
95	}
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