/*
- * $Id: main.c,v 1.15 2002-01-03 17:49:38 sibaz Exp $
- *
* Copyright (c) 1990,1993 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif /* HAVE_UNISTD_H */
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif /* HAVE_FCNTL_H */
#include <signal.h>
-#include <sys/types.h>
-#include <sys/stat.h>
#include <sys/param.h>
#include <sys/uio.h>
-#include <syslog.h>
+#include <atalk/logger.h>
#include <sys/time.h>
#include <sys/socket.h>
-
+#include <sys/poll.h>
#include <errno.h>
+#include <sys/wait.h>
+
+#include <atalk/adouble.h>
-#include <netatalk/endian.h>
#include <netatalk/at.h>
#include <atalk/compat.h>
#include <atalk/dsi.h>
#include <atalk/atp.h>
#include <atalk/asp.h>
#include <atalk/afp.h>
-#include <atalk/adouble.h>
#include <atalk/paths.h>
#include <atalk/util.h>
#include <atalk/server_child.h>
+#include <atalk/server_ipc.h>
#include "globals.h"
#include "afp_config.h"
#include "status.h"
#include "fork.h"
#include "uam_auth.h"
+#include "afp_zeroconf.h"
#ifdef TRU64
#include <sys/security.h>
static char **argv = NULL;
#endif /* TRU64 */
-#ifdef DID_MTAB
-#include "parse_mtab.h"
-#endif /* DID_MTAB */
-
unsigned char nologin = 0;
-#ifdef DID_MTAB
-/* global mount table; afpd_st_cnid uses this to lookup the right entry. */
-static struct afpd_mount_table *afpd_mount_table = NULL;
-#endif /* DID_MTAB */
-
struct afp_options default_options;
static AFPConfig *configs;
static server_child *server_children;
-static fd_set save_rfds;
+static sig_atomic_t reloadconfig = 0;
+
+/* Two pointers to dynamic allocated arrays which store pollfds and associated data */
+static struct pollfd *fdset;
+static struct polldata *polldata;
+static int fdset_size; /* current allocated size */
+static int fdset_used; /* number of used elements */
+
#ifdef TRU64
void afp_get_cmdline( int *ac, char ***av)
}
#endif /* TRU64 */
-static void afp_exit(const int i)
+/* This is registered with atexit() */
+static void afp_exit(void)
{
- server_unlock(default_options.pidfile);
- exit(i);
+ if (parent_or_child == 0)
+ /* Only do this in the parent */
+ server_unlock(default_options.pidfile);
}
+
+/* ------------------
+ initialize fd set we are waiting for.
+*/
+static void fd_set_listening_sockets(void)
+{
+ AFPConfig *config;
+
+ for (config = configs; config; config = config->next) {
+ if (config->fd < 0) /* for proxies */
+ continue;
+ fdset_add_fd(&fdset, &polldata, &fdset_used, &fdset_size, config->fd, LISTEN_FD, config);
+ }
+}
+
+static void fd_reset_listening_sockets(void)
+{
+ AFPConfig *config;
+
+ for (config = configs; config; config = config->next) {
+ if (config->fd < 0) /* for proxies */
+ continue;
+ fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, config->fd);
+ }
+}
+
+/* ------------------ */
static void afp_goaway(int sig)
{
+
#ifndef NO_DDP
asp_kill(sig);
#endif /* ! NO_DDP */
- dsi_kill(sig);
- switch( sig ) {
- case SIGTERM :
- syslog( LOG_INFO, "shutting down on signal %d", sig );
- break;
- case SIGHUP :
- /* w/ a configuration file, we can force a re-read if we want */
- nologin++;
- if ((nologin + 1) & 1) {
- AFPConfig *config;
- syslog(LOG_INFO, "re-reading configuration file");
- for (config = configs; config; config = config->next)
- if (config->server_cleanup)
- config->server_cleanup(config);
- configfree(configs, NULL);
- if (!(configs = configinit(&default_options))) {
- syslog(LOG_ERR, "config re-read: no servers configured");
- afp_exit(1);
- }
- FD_ZERO(&save_rfds);
- for (config = configs; config; config = config->next) {
- if (config->fd < 0)
- continue;
- FD_SET(config->fd, &save_rfds);
- }
- } else {
- syslog(LOG_INFO, "disallowing logins");
- auth_unload();
- }
- break;
- default :
- syslog( LOG_ERR, "afp_goaway: bad signal" );
- }
- if ( sig == SIGTERM ) {
+ switch( sig ) {
+
+ case SIGTERM :
+ LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGTERM");
AFPConfig *config;
+ if (server_children)
+ server_child_kill(server_children, CHILD_DSIFORK, sig);
+
for (config = configs; config; config = config->next)
if (config->server_cleanup)
config->server_cleanup(config);
+ server_unlock(default_options.pidfile);
+ exit(0);
+ break;
+
+ case SIGUSR1 :
+ nologin++;
+ auth_unload();
+ LOG(log_info, logtype_afpd, "disallowing logins");
+
+ if (server_children)
+ server_child_kill(server_children, CHILD_DSIFORK, sig);
+ break;
- afp_exit(0);
+ case SIGHUP :
+ /* w/ a configuration file, we can force a re-read if we want */
+ reloadconfig = 1;
+ break;
+
+ default :
+ LOG(log_error, logtype_afpd, "afp_goaway: bad signal" );
}
return;
}
-static void child_handler()
+static void child_handler(int sig _U_)
{
- server_child_handler(server_children);
+ int fd;
+ int status, i;
+ pid_t pid;
+
+#ifndef WAIT_ANY
+#define WAIT_ANY (-1)
+#endif /* ! WAIT_ANY */
+
+ while ((pid = waitpid(WAIT_ANY, &status, WNOHANG)) > 0) {
+ for (i = 0; i < server_children->nforks; i++) {
+ if ((fd = server_child_remove(server_children, i, pid)) != -1) {
+ fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, fd);
+ break;
+ }
+ }
+
+ if (WIFEXITED(status)) {
+ if (WEXITSTATUS(status))
+ LOG(log_info, logtype_afpd, "child[%d]: exited %d", pid, WEXITSTATUS(status));
+ else
+ LOG(log_info, logtype_afpd, "child[%d]: done", pid);
+ } else {
+ if (WIFSIGNALED(status))
+ LOG(log_info, logtype_afpd, "child[%d]: killed by signal %d", pid, WTERMSIG(status));
+ else
+ LOG(log_info, logtype_afpd, "child[%d]: died", pid);
+ }
+ }
}
-int main( ac, av )
-int ac;
-char **av;
+int main(int ac, char **av)
{
AFPConfig *config;
fd_set rfds;
+ void *ipc;
struct sigaction sv;
sigset_t sigs;
+ int ret;
#ifdef TRU64
argc = ac;
set_auth_parameters( ac, av );
#endif /* TRU64 */
- umask( 022 ); /* so inherited file permissions work right */
+ /* Log SIGBUS/SIGSEGV SBT */
+ fault_setup(NULL);
+
+ /* Default log setup: log to syslog */
+ setuplog("default log_note");
afp_options_init(&default_options);
if (!afp_options_parse(ac, av, &default_options))
- exit(1);
+ exit(EXITERR_CONF);
- umask( default_options.umask );
+ /* Save the user's current umask for use with CNID (and maybe some
+ * other things, too). */
+ default_options.save_mask = umask( default_options.umask );
switch(server_lock("afpd", default_options.pidfile,
default_options.flags & OPTION_DEBUG)) {
case -1: /* error */
- exit(1);
+ exit(EXITERR_SYS);
case 0: /* child */
break;
default: /* server */
exit(0);
}
-
-#ifdef DID_MTAB
- /* if we are going to use afpd.mtab, load the file */
- afpd_mount_table = afpd_mtab_parse ( AFPD_MTAB_FILE );
-#endif /* DID_MTAB */
+ atexit(afp_exit);
/* install child handler for asp and dsi. we do this before afp_goaway
* as afp_goaway references stuff from here.
* XXX: this should really be setup after the initial connections. */
if (!(server_children = server_child_alloc(default_options.connections,
CHILD_NFORKS))) {
- syslog( LOG_ERR, "main: server_child alloc: %s", strerror(errno) );
- afp_exit(1);
+ LOG(log_error, logtype_afpd, "main: server_child alloc: %s", strerror(errno) );
+ exit(EXITERR_SYS);
}
- memset(&sv, 0, sizeof(sv));
+ memset(&sv, 0, sizeof(sv));
+ /* linux at least up to 2.4.22 send a SIGXFZ for vfat fs,
+ even if the file is open with O_LARGEFILE ! */
+#ifdef SIGXFSZ
+ sv.sa_handler = SIG_IGN;
+ sigemptyset( &sv.sa_mask );
+ if (sigaction(SIGXFSZ, &sv, NULL ) < 0 ) {
+ LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) );
+ exit(EXITERR_SYS);
+ }
+#endif
+
sv.sa_handler = child_handler;
sigemptyset( &sv.sa_mask );
+ sigaddset(&sv.sa_mask, SIGALRM);
+ sigaddset(&sv.sa_mask, SIGHUP);
+ sigaddset(&sv.sa_mask, SIGTERM);
+ sigaddset(&sv.sa_mask, SIGUSR1);
+
sv.sa_flags = SA_RESTART;
- if ( sigaction( SIGCHLD, &sv, 0 ) < 0 ) {
- syslog( LOG_ERR, "main: sigaction: %s", strerror(errno) );
- afp_exit(1);
+ if ( sigaction( SIGCHLD, &sv, NULL ) < 0 ) {
+ LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) );
+ exit(EXITERR_SYS);
}
sv.sa_handler = afp_goaway;
sigemptyset( &sv.sa_mask );
+ sigaddset(&sv.sa_mask, SIGALRM);
+ sigaddset(&sv.sa_mask, SIGTERM);
sigaddset(&sv.sa_mask, SIGHUP);
+ sigaddset(&sv.sa_mask, SIGCHLD);
+ sv.sa_flags = SA_RESTART;
+ if ( sigaction( SIGUSR1, &sv, NULL ) < 0 ) {
+ LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) );
+ exit(EXITERR_SYS);
+ }
+
+ sigemptyset( &sv.sa_mask );
+ sigaddset(&sv.sa_mask, SIGALRM);
sigaddset(&sv.sa_mask, SIGTERM);
+ sigaddset(&sv.sa_mask, SIGUSR1);
+ sigaddset(&sv.sa_mask, SIGCHLD);
sv.sa_flags = SA_RESTART;
- if ( sigaction( SIGHUP, &sv, 0 ) < 0 ) {
- syslog( LOG_ERR, "main: sigaction: %s", strerror(errno) );
- afp_exit(1);
+ if ( sigaction( SIGHUP, &sv, NULL ) < 0 ) {
+ LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) );
+ exit(EXITERR_SYS);
}
- if ( sigaction( SIGTERM, &sv, 0 ) < 0 ) {
- syslog( LOG_ERR, "main: sigaction: %s", strerror(errno) );
- afp_exit(1);
+
+
+ sigemptyset( &sv.sa_mask );
+ sigaddset(&sv.sa_mask, SIGALRM);
+ sigaddset(&sv.sa_mask, SIGHUP);
+ sigaddset(&sv.sa_mask, SIGUSR1);
+ sigaddset(&sv.sa_mask, SIGCHLD);
+ sv.sa_flags = SA_RESTART;
+ if ( sigaction( SIGTERM, &sv, NULL ) < 0 ) {
+ LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) );
+ exit(EXITERR_SYS);
}
/* afpd.conf: not in config file: lockfile, connections, configfile
*/
sigemptyset(&sigs);
+ sigaddset(&sigs, SIGALRM);
sigaddset(&sigs, SIGHUP);
+ sigaddset(&sigs, SIGUSR1);
+#if 0
+ /* don't block SIGTERM */
sigaddset(&sigs, SIGTERM);
- sigprocmask(SIG_BLOCK, &sigs, NULL);
+#endif
+ sigaddset(&sigs, SIGCHLD);
+
+ pthread_sigmask(SIG_BLOCK, &sigs, NULL);
if (!(configs = configinit(&default_options))) {
- syslog(LOG_ERR, "main: no servers configured: %s\n", strerror(errno));
- afp_exit(1);
+ LOG(log_error, logtype_afpd, "main: no servers configured");
+ exit(EXITERR_CONF);
}
- sigprocmask(SIG_UNBLOCK, &sigs, NULL);
+ pthread_sigmask(SIG_UNBLOCK, &sigs, NULL);
- /* watch atp and dsi sockets. */
- FD_ZERO(&save_rfds);
- for (config = configs; config; config = config->next) {
- if (config->fd < 0) /* for proxies */
- continue;
- FD_SET(config->fd, &save_rfds);
- }
+ /* Register CNID */
+ cnid_init();
+
+ /* watch atp, dsi sockets and ipc parent/child file descriptor. */
+ fd_set_listening_sockets();
+
+ afp_child_t *child;
/* wait for an appleshare connection. parent remains in the loop
* while the children get handled by afp_over_{asp,dsi}. this is
* afterwards. establishing timeouts for logins is a possible
* solution. */
while (1) {
- rfds = save_rfds;
- if (select(FD_SETSIZE, &rfds, NULL, NULL, NULL) < 0) {
+ LOG(log_maxdebug, logtype_afpd, "main: polling %i fds", fdset_used);
+ pthread_sigmask(SIG_UNBLOCK, &sigs, NULL);
+ ret = poll(fdset, fdset_used, -1);
+ pthread_sigmask(SIG_BLOCK, &sigs, NULL);
+ int saveerrno = errno;
+
+ if (reloadconfig) {
+ nologin++;
+ auth_unload();
+ fd_reset_listening_sockets();
+
+ LOG(log_info, logtype_afpd, "re-reading configuration file");
+ for (config = configs; config; config = config->next)
+ if (config->server_cleanup)
+ config->server_cleanup(config);
+
+ /* configfree close atp socket used for DDP tickle, there's an issue
+ * with atp tid. */
+ configfree(configs, NULL);
+ if (!(configs = configinit(&default_options))) {
+ LOG(log_error, logtype_afpd, "config re-read: no servers configured");
+ exit(EXITERR_CONF);
+ }
+
+ fd_set_listening_sockets();
+
+ nologin = 0;
+ reloadconfig = 0;
+ errno = saveerrno;
+ continue;
+ }
+
+ if (ret == 0)
+ continue;
+
+ if (ret < 0) {
if (errno == EINTR)
continue;
- syslog(LOG_ERR, "main: can't wait for input: %s", strerror(errno));
+ LOG(log_error, logtype_afpd, "main: can't wait for input: %s", strerror(errno));
break;
}
- for (config = configs; config; config = config->next) {
- if (config->fd < 0)
- continue;
- if (FD_ISSET(config->fd, &rfds))
- config->server_start(config, configs, server_children);
- }
- }
+ for (int i = 0; i < fdset_used; i++) {
+ if (fdset[i].revents & POLLIN) {
+ switch (polldata[i].fdtype) {
+ case LISTEN_FD:
+ config = (AFPConfig *)polldata[i].data;
+ /* config->server_start is afp_config.c:dsi_start() for DSI */
+ if (child = config->server_start(config, configs, server_children)) {
+ /* Add IPC fd to select fd set */
+ fdset_add_fd(&fdset, &polldata, &fdset_used, &fdset_size, child->ipc_fds[0], IPC_FD, child);
+ }
+ break;
+ case IPC_FD:
+ child = (afp_child_t *)polldata[i].data;
+ LOG(log_debug, logtype_afpd, "main: IPC request from child[%u]", child->pid);
+ if ((ret = ipc_server_read(server_children, child->ipc_fds[0])) == 0) {
+ fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, child->ipc_fds[0]);
+ close(child->ipc_fds[0]);
+ child->ipc_fds[0] = -1;
+ }
+ break;
+ default:
+ LOG(log_debug, logtype_afpd, "main: IPC request for unknown type");
+ break;
+ } /* switch */
+ } /* if */
+ } /* for (i)*/
+ } /* while (1) */
return 0;
}
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