Split code out into separate files and remove some global variables to

[rsync/rsync.git] / cleanup.c

diff --git a/cleanup.c b/cleanup.c
index ee2fa4d..904fbaa 100644 (file)
--- a/cleanup.c
+++ b/cleanup.c
@@ -1,6 +1,8 @@
-/* 
-   Copyright (C) Andrew Tridgell 1996
+/* -*- c-file-style: "linux" -*-
+   
+   Copyright (C) 1996-2000 by Andrew Tridgell
    Copyright (C) Paul Mackerras 1996
+   Copyright (C) 2002 by Martin Pool
    
    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
@@ -19,9 +21,24 @@
 
 #include "rsync.h"
 
-/* handling the cleanup when a transfer is interrupted is tricky when
-   --partial is selected. We need to ensure that the partial file is
-   kept if any real data has been transferred */
+/**
+ * @file cleanup.c
+ *
+ * Code for handling interrupted transfers.  Depending on the @c
+ * --partial option, we may either delete the temporary file, or go
+ * ahead and overwrite the destination.  This second behaviour only
+ * occurs if we've sent literal data and therefore hopefully made
+ * progress on the transfer.
+ **/
+
+/**
+ * Set to True once literal data has been sent across the link for the
+ * current file. (????)
+ *
+ * Handling the cleanup when a transfer is interrupted is tricky when
+ * --partial is selected.  We need to ensure that the partial file is
+ * kept if any real data has been transferred.
+ **/
 int cleanup_got_literal=0;
 
 static char *cleanup_fname;
@@ -30,12 +47,35 @@ static struct file_struct *cleanup_file;
 static int cleanup_fd1, cleanup_fd2;
 static struct map_struct *cleanup_buf;
 static int cleanup_pid = 0;
+extern int io_error;
+
+pid_t cleanup_child_pid = -1;
 
-void exit_cleanup(int code)
+/**
+ * Eventually calls exit(), therefore does not return.
+ *
+ * @param code one of the RERR_* codes from errcode.h.
+ **/
+void _exit_cleanup(int code, const char *file, int line)
 {
+       int ocode = code;
        extern int keep_partial;
+       extern int log_got_error;
 
        signal(SIGUSR1, SIG_IGN);
+       signal(SIGUSR2, SIG_IGN);
+
+       if (verbose > 3)
+               rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): entered\n", 
+                       code, file, line);
+
+       if (cleanup_child_pid != -1) {
+               int status;
+               if (waitpid(cleanup_child_pid, &status, WNOHANG) == cleanup_child_pid) {
+                       status = WEXITSTATUS(status);
+                       if (status > code) code = status;
+               }
+       }
 
        if (cleanup_got_literal && cleanup_fname && keep_partial) {
                char *fname = cleanup_fname;
@@ -58,7 +98,15 @@ void exit_cleanup(int code)
                }
        }
 
-       if (code) log_exit(code);
+       if (code == 0 && (io_error || log_got_error)) {
+               code = RERR_PARTIAL;
+       }
+
+       if (code) log_exit(code, file, line);
+
+       if (verbose > 2)
+               rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): about to call exit(%d)\n", 
+                       ocode, file, line, code);
 
        exit(code);
 }