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
#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;
static int cleanup_pid = 0;
extern int io_error;
+pid_t cleanup_child_pid = -1;
-/*
- * Code is one of the RERR_* codes from errcode.h.
- */
+/**
+ * Eventually calls exit(), passing @p code, 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;
+ static int inside_cleanup = 0;
- if (code == 0 && io_error) code = RERR_FILEIO;
+ if (inside_cleanup != 0) {
+ /* prevent the occasional infinite recursion */
+ return;
+ }
+ inside_cleanup = 1;
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;
cleanup_fname = NULL;
}
}
+ 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);
}