cleanup.c

   1 /*
   2    Copyright (C) Andrew Tridgell 1996
   3    Copyright (C) Paul Mackerras 1996
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 #include "rsync.h"
  21
  22 /* handling the cleanup when a transfer is interrupted is tricky when
  23    --partial is selected. We need to ensure that the partial file is
  24    kept if any real data has been transferred */
  25 int cleanup_got_literal=0;
  26
  27 static char *cleanup_fname;
  28 static char *cleanup_new_fname;
  29 static struct file_struct *cleanup_file;
  30 static int cleanup_fd1, cleanup_fd2;
  31 static struct map_struct *cleanup_buf;
  32 static int cleanup_pid = 0;
  33 extern int io_error;
  34
  35 void _exit_cleanup(int code, const char *file, int line)
  36 {
  37         extern int keep_partial;
  38
  39         if (code == 0 && io_error) code = RERR_FILEIO;
  40
  41         signal(SIGUSR1, SIG_IGN);
  42
  43         if (cleanup_got_literal && cleanup_fname && keep_partial) {
  44                 char *fname = cleanup_fname;
  45                 cleanup_fname = NULL;
  46                 if (cleanup_buf) unmap_file(cleanup_buf);
  47                 if (cleanup_fd1 != -1) close(cleanup_fd1);
  48                 if (cleanup_fd2 != -1) close(cleanup_fd2);
  49                 finish_transfer(cleanup_new_fname, fname, cleanup_file);
  50         }
  51         io_flush();
  52         if (cleanup_fname)
  53                 do_unlink(cleanup_fname);
  54         if (code) {
  55                 kill_all(SIGUSR1);
  56         }
  57         if ((cleanup_pid != 0) && (cleanup_pid == (int) getpid())) {
  58                 char *pidf = lp_pid_file();
  59                 if (pidf && *pidf) {
  60                         unlink(lp_pid_file());
  61                 }
  62         }
  63
  64         if (code) log_exit(code, file, line);
  65
  66         exit(code);
  67 }
  68
  69 void cleanup_disable(void)
  70 {
  71         cleanup_fname = NULL;
  72         cleanup_got_literal = 0;
  73 }
  74
  75
  76 void cleanup_set(char *fnametmp, char *fname, struct file_struct *file,
  77                  struct map_struct *buf, int fd1, int fd2)
  78 {
  79         cleanup_fname = fnametmp;
  80         cleanup_new_fname = fname;
  81         cleanup_file = file;
  82         cleanup_buf = buf;
  83         cleanup_fd1 = fd1;
  84         cleanup_fd2 = fd2;
  85 }
  86
  87 void cleanup_set_pid(int pid)
  88 {
  89         cleanup_pid = pid;
  90 }