eggdrop1.9/src/misc_file.c

/*
 * misc.c -- handles:
 *   copyfile() movefile()
 *
 * $Id: misc_file.c,v 1.5 2001/04/12 02:44:22 guppy Exp $
 */
/*
 * Copyright (C) 1999, 2000, 2001 Eggheads Development Team
 *
 * 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;
      }
    }
  }
#ifdef HAVE_FSYNC
  fsync(fo);
#endif /* HAVE_FSYNC */
  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	guppy	1.4	/*
2	fabian	1.1	* misc.c -- handles:
3			* copyfile() movefile()
4	guppy	1.4	*
5	ite	1.6	* $Id: misc_file.c,v 1.5 2001/04/12 02:44:22 guppy Exp $
6	fabian	1.1	*/
7	guppy	1.4	/*
8			* Copyright (C) 1999, 2000, 2001 Eggheads Development Team
9			*
10	fabian	1.1	* This program is free software; you can redistribute it and/or
11			* modify it under the terms of the GNU General Public License
12			* as published by the Free Software Foundation; either version 2
13			* of the License, or (at your option) any later version.
14	guppy	1.4	*
15	fabian	1.1	* This program is distributed in the hope that it will be useful,
16			* but WITHOUT ANY WARRANTY; without even the implied warranty of
17			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18			* GNU General Public License for more details.
19	guppy	1.4	*
20	fabian	1.1	* You should have received a copy of the GNU General Public License
21			* along with this program; if not, write to the Free Software
22			* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23			*/
24
25			#include "main.h"
26			#include <sys/stat.h>
27			#include <unistd.h>
28			#include <fcntl.h>
29			#include "stat.h"
30
31
32			/* Copy a file from one place to another (possibly erasing old copy).
33			*
34			* returns: 0 if OK
35			* 1 if can't open original file
36			* 2 if can't open new file
37			* 3 if original file isn't normal
38			* 4 if ran out of disk space
39			*/
40			int copyfile(char oldpath, char newpath)
41			{
42			int fi, fo, x;
43			char buf[512];
44			struct stat st;
45
46	fabian	1.2	#ifndef CYGWIN_HACKS
47	fabian	1.1	fi = open(oldpath, O_RDONLY, 0);
48	fabian	1.2	#else
49			fi = open(oldpath, O_RDONLY \| O_BINARY, 0);
50			#endif
51	fabian	1.1	if (fi < 0)
52			return 1;
53			fstat(fi, &st);
54			if (!(st.st_mode & S_IFREG))
55			return 3;
56			fo = creat(newpath, (int) (st.st_mode & 0777));
57			if (fo < 0) {
58			close(fi);
59			return 2;
60			}
61			for (x = 1; x > 0;) {
62			x = read(fi, buf, 512);
63			if (x > 0) {
64			if (write(fo, buf, x) < x) { /* Couldn't write */
65			close(fo);
66			close(fi);
67			unlink(newpath);
68			return 4;
69			}
70			}
71			}
72	guppy	1.5	#ifdef HAVE_FSYNC
73			fsync(fo);
74			#endif /* HAVE_FSYNC */
75	fabian	1.1	close(fo);
76			close(fi);
77			return 0;
78			}
79
80			int movefile(char oldpath, char newpath)
81			{
82			int ret;
83	guppy	1.4
84	fabian	1.1	#ifdef HAVE_RENAME
85			/* Try to use rename first */
86	guppy	1.3	if (!rename(oldpath, newpath))
87	fabian	1.1	return 0;
88			#endif /* HAVE_RENAME */
89
90			/* If that fails, fall back to just copying and then
91			* deleting the file.
92			*/
93			ret = copyfile(oldpath, newpath);
94	guppy	1.3	if (!ret)
95	fabian	1.1	unlink(oldpath);
96			return ret;
97			}
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