-/*
- Copyright (C) Andrew Tridgell 1996
+/* -*- c-file-style: "linux" -*-
+
+ Copyright (C) 1996-2001 by Andrew Tridgell <tridge@samba.org>
Copyright (C) Paul Mackerras 1996
This program is free software; you can redistribute it and/or modify
extern int verbose;
+
+/****************************************************************************
+wait for a process to exit, calling io_flush while waiting
+****************************************************************************/
+void wait_process(pid_t pid, int *status)
+{
+ while (waitpid(pid, status, WNOHANG) == 0) {
+ msleep(20);
+ io_flush();
+ }
+
+ /* TODO: If the child exited on a signal, then log an
+ * appropriate error message. Perhaps we should also accept a
+ * message describing the purpose of the child. Also indicate
+ * this to the caller so that thhey know something went
+ * wrong. */
+ *status = WEXITSTATUS(*status);
+}
+
static void report(int f)
{
time_t t = time(NULL);
}
-static int do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
+/* Start the remote shell. cmd may be NULL to use the default. */
+static pid_t do_cmd(char *cmd,char *machine,char *user,char *path,int *f_in,int *f_out)
{
char *args[100];
- int i,argc=0, ret;
+ int i,argc=0;
+ pid_t ret;
char *tok,*dir=NULL;
extern int local_server;
extern char *rsync_path;
+ extern int blocking_io;
if (!local_server) {
if (!cmd)
args[argc++] = rsync_path;
server_options(args,&argc);
+
+
+ if (strcmp(cmd, RSYNC_RSH) == 0) blocking_io = 1;
}
args[argc++] = ".";
char *dir = argv[0];
extern int relative_paths;
extern int recurse;
+ extern int remote_version;
if (verbose > 2)
rprintf(FINFO,"server_sender starting pid=%d\n",(int)getpid());
}
send_files(flist,f_out,f_in);
+ io_flush();
report(f_out);
+ if (remote_version >= 24) {
+ /* final goodbye message */
+ read_int(f_in);
+ }
io_flush();
exit_cleanup(0);
}
int pid;
int status=0;
int recv_pipe[2];
+ int error_pipe[2];
extern int preserve_hard_links;
+ extern int delete_after;
+ extern int recurse;
+ extern int delete_mode;
+ extern int remote_version;
if (preserve_hard_links)
init_hard_links(flist);
- if (pipe(recv_pipe) < 0) {
+ if (!delete_after) {
+ /* I moved this here from recv_files() to prevent a race condition */
+ if (recurse && delete_mode && !local_name && flist->count>0) {
+ delete_files(flist);
+ }
+ }
+
+ if (fd_pair(recv_pipe) < 0) {
rprintf(FERROR,"pipe failed in do_recv\n");
exit_cleanup(RERR_SOCKETIO);
}
+
+ if (fd_pair(error_pipe) < 0) {
+ rprintf(FERROR,"error pipe failed in do_recv\n");
+ exit_cleanup(RERR_SOCKETIO);
+ }
io_flush();
if ((pid=do_fork()) == 0) {
close(recv_pipe[0]);
+ close(error_pipe[0]);
if (f_in != f_out) close(f_out);
+ /* we can't let two processes write to the socket at one time */
+ io_multiplexing_close();
+
+ /* set place to send errors */
+ set_error_fd(error_pipe[1]);
+
recv_files(f_in,flist,local_name,recv_pipe[1]);
+ io_flush();
report(f_in);
+ write_int(recv_pipe[1],1);
+ close(recv_pipe[1]);
io_flush();
- _exit(0);
+ /* finally we go to sleep until our parent kills us
+ with a USR2 signal. We sleep for a short time as on
+ some OSes a signal won't interrupt a sleep! */
+ while (1) msleep(20);
}
close(recv_pipe[1]);
- io_close_input(f_in);
+ close(error_pipe[1]);
if (f_in != f_out) close(f_in);
io_start_buffering(f_out);
+ io_set_error_fd(error_pipe[0]);
+
generate_files(f_out,flist,local_name,recv_pipe[0]);
+ read_int(recv_pipe[0]);
+ close(recv_pipe[0]);
+ if (remote_version >= 24) {
+ /* send a final goodbye message */
+ write_int(f_out, -1);
+ }
io_flush();
+
+ kill(pid, SIGUSR2);
wait_process(pid, &status);
return status;
}
extern int delete_mode;
extern int delete_excluded;
extern int am_daemon;
+ extern int module_id;
+ extern int am_sender;
if (verbose > 2)
rprintf(FINFO,"server_recv(%d) starting pid=%d\n",argc,(int)getpid());
+
+ if (am_daemon && lp_read_only(module_id) && !am_sender) {
+ rprintf(FERROR,"ERROR: module is read only\n");
+ exit_cleanup(RERR_SYNTAX);
+ return;
+ }
+
if (argc > 0) {
dir = argv[0];
{
extern int cvs_exclude;
extern int am_sender;
+ extern int remote_version;
setup_protocol(f_out, f_in);
+ set_nonblocking(f_in);
+ set_nonblocking(f_out);
+
+ if (remote_version >= 23)
+ io_start_multiplex_out(f_out);
+
if (am_sender) {
recv_exclude_list(f_in);
if (cvs_exclude)
exit_cleanup(0);
}
-int client_run(int f_in, int f_out, int pid, int argc, char *argv[])
+
+/*
+ * This is called once the connection has been negotiated. It is used
+ * for rsyncd, remote-shell, and local connections.
+ */
+int client_run(int f_in, int f_out, pid_t pid, int argc, char *argv[])
{
struct file_list *flist;
int status = 0, status2 = 0;
char *local_name = NULL;
extern int am_sender;
- extern int list_only;
+ extern int remote_version;
+ extern pid_t cleanup_child_pid;
+
+ cleanup_child_pid = pid;
+
+ set_nonblocking(f_in);
+ set_nonblocking(f_out);
setup_protocol(f_out,f_in);
+
+ if (remote_version >= 23)
+ io_start_multiplex_in(f_in);
if (am_sender) {
extern int cvs_exclude;
io_flush();
wait_process(pid, &status);
}
+ if (remote_version >= 24) {
+ /* final goodbye message */
+ read_int(f_in);
+ }
report(-1);
exit_cleanup(status);
}
- if (argc == 0) list_only = 1;
+ if (argc == 0) {
+ extern int list_only;
+ list_only = 1;
+ }
send_exclude_list(f_out);
flist = recv_file_list(f_in);
if (!flist || flist->count == 0) {
- rprintf(FINFO,"client: nothing to do\n");
+ rprintf(FINFO, "client: nothing to do: "
+ "perhaps you need to specify some filenames or "
+ "the --recursive option?\n");
exit_cleanup(0);
}
wait_process(pid, &status);
}
- return status | status2;
+ return MAX(status, status2);
}
static char *find_colon(char *s)
return p;
}
+
+/*
+ * Start a client for either type of remote connection. Work out
+ * whether the arguments request a remote shell or rsyncd connection,
+ * and call the appropriate connection function, then run_client.
+ */
static int start_client(int argc, char *argv[])
{
char *p;
char *shell_machine = NULL;
char *shell_path = NULL;
char *shell_user = NULL;
- int pid, ret;
+ int ret;
+ pid_t pid;
int f_in,f_out;
extern int local_server;
extern int am_sender;
extern char *shell_cmd;
extern int rsync_port;
+ char *argv0 = strdup(argv[0]);
- if (strncasecmp(URL_PREFIX, argv[0], strlen(URL_PREFIX)) == 0) {
+ if (strncasecmp(URL_PREFIX, argv0, strlen(URL_PREFIX)) == 0) {
char *host, *path;
- host = argv[0] + strlen(URL_PREFIX);
+ host = argv0 + strlen(URL_PREFIX);
p = strchr(host,'/');
if (p) {
*p = 0;
return start_socket_client(host, path, argc-1, argv+1);
}
- p = find_colon(argv[0]);
+ p = find_colon(argv0);
if (p) {
if (p[1] == ':') {
*p = 0;
- return start_socket_client(argv[0], p+2, argc-1, argv+1);
+ return start_socket_client(argv0, p+2, argc-1, argv+1);
}
if (argc < 1) {
am_sender = 0;
*p = 0;
- shell_machine = argv[0];
+ shell_machine = argv0;
shell_path = p+1;
argc--;
argv++;
usage(FERROR);
exit_cleanup(RERR_SYNTAX);
}
+
+ if (argc == 0 && !am_sender) {
+ extern int list_only;
+ list_only = 1;
+ }
pid = do_cmd(shell_cmd,shell_machine,shell_user,shell_path,&f_in,&f_out);
exit_cleanup(RERR_SIGNAL);
}
+static RETSIGTYPE sigusr2_handler(int val) {
+ extern int log_got_error;
+ if (log_got_error) _exit(RERR_PARTIAL);
+ _exit(0);
+}
+
+static RETSIGTYPE sigchld_handler(int val) {
+}
+
int main(int argc,char *argv[])
{
extern int am_root;
extern int dry_run;
extern int am_daemon;
extern int am_server;
+ int ret;
signal(SIGUSR1, sigusr1_handler);
+ signal(SIGUSR2, sigusr2_handler);
+ signal(SIGCHLD, sigchld_handler);
starttime = time(NULL);
am_root = (getuid() == 0);
carried across */
orig_umask = (int)umask(0);
- if (!parse_arguments(argc, argv, 1)) {
+ if (!parse_arguments(&argc, (const char ***) &argv, 1)) {
+ /* FIXME: We ought to call the same error-handling
+ * code here, rather than relying on getopt. */
+ option_error();
exit_cleanup(RERR_SYNTAX);
}
- argc -= optind;
- argv += optind;
- optind = 0;
-
- signal(SIGCHLD,SIG_IGN);
signal(SIGINT,SIGNAL_CAST sig_int);
signal(SIGPIPE,SIGNAL_CAST sig_int);
signal(SIGHUP,SIGNAL_CAST sig_int);
#endif
if (am_server) {
+ set_nonblocking(STDIN_FILENO);
+ set_nonblocking(STDOUT_FILENO);
start_server(STDIN_FILENO, STDOUT_FILENO, argc, argv);
}
- return start_client(argc, argv);
+ ret = start_client(argc, argv);
+ exit_cleanup(ret);
+ return ret;
}
Matt McCutchen's Web Site / rsync / rsync.git / blobdiff