-/* -*- c-file-style: "linux" -*-
-
- Copyright (C) 1996-2000 by Andrew Tridgell
- Copyright (C) Paul Mackerras 1996
-
- 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
+/*
+ * End-of-run cleanup routines.
+ *
+ * Copyright (C) 1996-2000 Andrew Tridgell
+ * Copyright (C) 1996 Paul Mackerras
+ * Copyright (C) 2002 Martin Pool
+ * Copyright (C) 2003-2007 Wayne Davison
+ *
+ * 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 3 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, visit the http://fsf.org website.
+ */
#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 */
-int cleanup_got_literal=0;
+extern int am_server;
+extern int am_daemon;
+extern int io_error;
+extern int keep_partial;
+extern int got_xfer_error;
+extern char *partial_dir;
+extern char *logfile_name;
+
+#ifdef HAVE_SIGACTION
+static struct sigaction sigact;
+#endif
+
+/**
+ * Close all open sockets and files, allowing a (somewhat) graceful
+ * shutdown() of socket connections. This eliminates the abortive
+ * TCP RST sent by a Winsock-based system when the close() occurs.
+ **/
+void close_all(void)
+{
+#ifdef SHUTDOWN_ALL_SOCKETS
+ int max_fd;
+ int fd;
+ int ret;
+ STRUCT_STAT st;
+
+ max_fd = sysconf(_SC_OPEN_MAX) - 1;
+ for (fd = max_fd; fd >= 0; fd--) {
+ if ((ret = do_fstat(fd, &st)) == 0) {
+ if (is_a_socket(fd))
+ ret = shutdown(fd, 2);
+ ret = close(fd);
+ }
+ }
+#endif
+}
+
+/**
+ * @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.
+ **/
-static char *cleanup_fname;
-static char *cleanup_new_fname;
+/**
+ * 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 const char *cleanup_fname;
+static const char *cleanup_new_fname;
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;
+static int cleanup_fd_r, cleanup_fd_w;
+static pid_t cleanup_pid = 0;
pid_t cleanup_child_pid = -1;
-/*
- * Code is one of the RERR_* codes from errcode.h.
- */
-void _exit_cleanup(int code, const char *file, int line)
+/**
+ * Eventually calls exit(), passing @p code, therefore does not return.
+ *
+ * @param code one of the RERR_* codes from errcode.h.
+ **/
+NORETURN void _exit_cleanup(int code, const char *file, int line)
{
- extern int keep_partial;
- extern int log_got_error;
+ static int cleanup_step = 0;
+ static int exit_code = 0;
+ static int unmodified_code = 0;
+
+ SIGACTION(SIGUSR1, SIG_IGN);
+ SIGACTION(SIGUSR2, SIG_IGN);
- signal(SIGUSR1, SIG_IGN);
- signal(SIGUSR2, SIG_IGN);
+ if (exit_code) /* Preserve first error code when recursing. */
+ code = exit_code;
- 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 this is the exit at the end of the run, the server side
+ * should not attempt to output a message (see log.c). */
+ if (am_server && code == 0)
+ am_server = 2;
+
+ /* Some of our actions might cause a recursive call back here, so we
+ * keep track of where we are in the cleanup and never repeat a step. */
+ switch (cleanup_step) {
+#include "case_N.h" /* case 0: cleanup_step++; */
+
+ exit_code = unmodified_code = code;
+
+ if (verbose > 3) {
+ rprintf(FINFO,
+ "_exit_cleanup(code=%d, file=%s, line=%d): entered\n",
+ code, file, line);
}
- }
- if (cleanup_got_literal && cleanup_fname && keep_partial) {
- char *fname = cleanup_fname;
- cleanup_fname = NULL;
- if (cleanup_buf) unmap_file(cleanup_buf);
- if (cleanup_fd1 != -1) close(cleanup_fd1);
- if (cleanup_fd2 != -1) close(cleanup_fd2);
- finish_transfer(cleanup_new_fname, fname, cleanup_file);
- }
- io_flush();
- if (cleanup_fname)
- do_unlink(cleanup_fname);
- if (code) {
- kill_all(SIGUSR1);
- }
- if ((cleanup_pid != 0) && (cleanup_pid == (int) getpid())) {
- char *pidf = lp_pid_file();
- if (pidf && *pidf) {
- unlink(lp_pid_file());
+ /* FALLTHROUGH */
+#include "case_N.h"
+
+ if (cleanup_child_pid != -1) {
+ int status;
+ int pid = wait_process(cleanup_child_pid, &status, WNOHANG);
+ if (pid == cleanup_child_pid) {
+ status = WEXITSTATUS(status);
+ if (status > code)
+ code = exit_code = status;
+ }
}
- }
- if (code == 0 && (io_error || log_got_error)) {
- code = RERR_PARTIAL;
- }
+ /* FALLTHROUGH */
+#include "case_N.h"
+
+ if (cleanup_got_literal && cleanup_fname && cleanup_new_fname
+ && keep_partial && handle_partial_dir(cleanup_new_fname, PDIR_CREATE)) {
+ const char *fname = cleanup_fname;
+ cleanup_fname = NULL;
+ if (cleanup_fd_r != -1)
+ close(cleanup_fd_r);
+ if (cleanup_fd_w != -1) {
+ flush_write_file(cleanup_fd_w);
+ close(cleanup_fd_w);
+ }
+ finish_transfer(cleanup_new_fname, fname, NULL, NULL,
+ cleanup_file, 0, !partial_dir);
+ }
+
+ /* FALLTHROUGH */
+#include "case_N.h"
+
+ io_flush(FULL_FLUSH);
+
+ /* FALLTHROUGH */
+#include "case_N.h"
+
+ if (cleanup_fname)
+ do_unlink(cleanup_fname);
+ if (code)
+ kill_all(SIGUSR1);
+ if (cleanup_pid && cleanup_pid == getpid()) {
+ char *pidf = lp_pid_file();
+ if (pidf && *pidf)
+ unlink(lp_pid_file());
+ }
+
+ if (code == 0) {
+ if (io_error & IOERR_DEL_LIMIT)
+ code = exit_code = RERR_DEL_LIMIT;
+ if (io_error & IOERR_VANISHED)
+ code = exit_code = RERR_VANISHED;
+ if (io_error & IOERR_GENERAL || got_xfer_error)
+ code = exit_code = RERR_PARTIAL;
+ }
+
+ if (code || am_daemon || (logfile_name && (am_server || !verbose)))
+ log_exit(code, file, line);
+
+ /* FALLTHROUGH */
+#include "case_N.h"
- 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",
+ unmodified_code, file, line, code);
+ }
+
+ /* FALLTHROUGH */
+#include "case_N.h"
+
+ if (am_server && code)
+ msleep(100);
+ close_all();
+
+ /* FALLTHROUGH */
+ default:
+ break;
+ }
exit(code);
}
void cleanup_disable(void)
{
- cleanup_fname = NULL;
+ cleanup_fname = cleanup_new_fname = NULL;
cleanup_got_literal = 0;
}
-void cleanup_set(char *fnametmp, char *fname, struct file_struct *file,
- struct map_struct *buf, int fd1, int fd2)
+void cleanup_set(const char *fnametmp, const char *fname, struct file_struct *file,
+ int fd_r, int fd_w)
{
cleanup_fname = fnametmp;
- cleanup_new_fname = fname;
+ cleanup_new_fname = fname; /* can be NULL on a partial-dir failure */
cleanup_file = file;
- cleanup_buf = buf;
- cleanup_fd1 = fd1;
- cleanup_fd2 = fd2;
+ cleanup_fd_r = fd_r;
+ cleanup_fd_w = fd_w;
}
-void cleanup_set_pid(int pid)
+void cleanup_set_pid(pid_t pid)
{
cleanup_pid = pid;
}
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff