X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=netatalk.git;a=blobdiff_plain;f=etc%2Fafpd%2Fmain.c;h=1c5c4c425e4359e96e3ceea8539d574cbb52ef2c;hp=63452d9e350fc8ceea033a82c889027c544c504e;hb=d2da4b77412a33dc2d62c7877e7b331285dadab6;hpb=e22bbf78a53bf739dd38383de42a23c95d43c15d diff --git a/etc/afpd/main.c b/etc/afpd/main.c index 63452d9e..1c5c4c42 100644 --- a/etc/afpd/main.c +++ b/etc/afpd/main.c @@ -11,10 +11,8 @@ #include #include #include - #include #include -#include #include #include #include @@ -22,19 +20,18 @@ #include #include +#include #include - -#include #include #include -#include -#include #include #include #include #include #include +#include #include +#include #include "afp_config.h" #include "status.h" @@ -42,21 +39,15 @@ #include "uam_auth.h" #include "afp_zeroconf.h" -#ifdef TRU64 -#include -#include -#include +#define AFP_LISTENERS 32 +#define FDSET_SAFETY 5 -static int argc = 0; -static char **argv = NULL; -#endif /* TRU64 */ +unsigned char nologin = 0; -unsigned char nologin = 0; - -struct afp_options default_options; -static AFPConfig *configs; +static AFPObj obj; static server_child *server_children; static sig_atomic_t reloadconfig = 0; +static sig_atomic_t gotsigchld = 0; /* Two pointers to dynamic allocated arrays which store pollfds and associated data */ static struct pollfd *fdset; @@ -65,59 +56,58 @@ static int fdset_size; /* current allocated size */ static int fdset_used; /* number of used elements */ static int disasociated_ipc_fd; /* disasociated sessions uses this fd for IPC */ -#ifdef TRU64 -void afp_get_cmdline( int *ac, char ***av) -{ - *ac = argc; - *av = argv; -} -#endif /* TRU64 */ +static afp_child_t *dsi_start(AFPObj *obj, DSI *dsi, server_child *server_children); -/* This is registered with atexit() */ -static void afp_exit(void) +static void afp_exit(int ret) { - if (parent_or_child == 0) - /* Only do this in the parent */ - server_unlock(default_options.pidfile); + exit(ret); } /* ------------------ initialize fd set we are waiting for. */ -static void fd_set_listening_sockets(void) +static void fd_set_listening_sockets(const AFPObj *config) { - 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); + DSI *dsi; + + for (dsi = config->dsi; dsi; dsi = dsi->next) { + fdset_add_fd(config->options.connections + AFP_LISTENERS + FDSET_SAFETY, + &fdset, + &polldata, + &fdset_used, + &fdset_size, + dsi->serversock, + LISTEN_FD, + dsi); } - fdset_add_fd(&fdset, &polldata, &fdset_used, &fdset_size, disasociated_ipc_fd, DISASOCIATED_IPC_FD, NULL); + + if (config->options.flags & OPTION_KEEPSESSIONS) + fdset_add_fd(config->options.connections + AFP_LISTENERS + FDSET_SAFETY, + &fdset, + &polldata, + &fdset_used, + &fdset_size, + disasociated_ipc_fd, + DISASOCIATED_IPC_FD, + NULL); } -static void fd_reset_listening_sockets(void) +static void fd_reset_listening_sockets(const AFPObj *config) { - AFPConfig *config; + const DSI *dsi; - 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); + for (dsi = config->dsi; dsi; dsi = dsi->next) { + fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, dsi->serversock); } - fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, disasociated_ipc_fd); + + if (config->options.flags & OPTION_KEEPSESSIONS) + fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, disasociated_ipc_fd); } /* ------------------ */ static void afp_goaway(int sig) { - AFPConfig *config; - -#ifndef NO_DDP - asp_kill(sig); -#endif /* ! NO_DDP */ - switch( sig ) { case SIGTERM: @@ -127,17 +117,18 @@ static void afp_goaway(int sig) LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGTERM"); break; case SIGQUIT: - LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGQUIT, NOT disconnecting clients"); + if (obj.options.flags & OPTION_KEEPSESSIONS) { + LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGQUIT, NOT disconnecting clients"); + } else { + LOG(log_note, logtype_afpd, "AFP Server shutting down on SIGQUIT"); + sig = SIGTERM; + } break; } 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); + _exit(0); break; case SIGUSR1 : @@ -154,13 +145,18 @@ static void afp_goaway(int sig) reloadconfig = 1; break; + case SIGCHLD: + /* w/ a configuration file, we can force a re-read if we want */ + gotsigchld = 1; + break; + default : LOG(log_error, logtype_afpd, "afp_goaway: bad signal" ); } return; } -static void child_handler(int sig _U_) +static void child_handler(void) { int fd; int status, i; @@ -197,16 +193,16 @@ static int setlimits(void) struct rlimit rlim; if (getrlimit(RLIMIT_NOFILE, &rlim) != 0) { - LOG(log_error, logtype_afpd, "setlimits: %s", strerror(errno)); - exit(1); + LOG(log_warning, logtype_afpd, "setlimits: reading current limits failed: %s", strerror(errno)); + return -1; } if (rlim.rlim_cur != RLIM_INFINITY && rlim.rlim_cur < 65535) { rlim.rlim_cur = 65535; if (rlim.rlim_max != RLIM_INFINITY && rlim.rlim_max < 65535) rlim.rlim_max = 65535; if (setrlimit(RLIMIT_NOFILE, &rlim) != 0) { - LOG(log_error, logtype_afpd, "setlimits: %s", strerror(errno)); - exit(1); + LOG(log_warning, logtype_afpd, "setlimits: increasing limits failed: %s", strerror(errno)); + return -1; } } return 0; @@ -214,52 +210,37 @@ static int setlimits(void) 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; - argv = av; - set_auth_parameters( ac, av ); -#endif /* TRU64 */ + /* Parse argv args and initialize default options */ + afp_options_parse_cmdline(&obj, ac, av); + + if (!(obj.cmdlineflags & OPTION_DEBUG) && (daemonize(0, 0) != 0)) + exit(EXITERR_SYS); /* 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(EXITERR_CONF); + if (afp_config_parse(&obj, "afpd") != 0) + afp_exit(EXITERR_CONF); - /* 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(EXITERR_SYS); - case 0: /* child */ - break; - default: /* server */ - exit(0); - } - atexit(afp_exit); + /* Save the user's current umask */ + obj.options.save_mask = umask(obj.options.umask); /* 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))) { + if (!(server_children = server_child_alloc(obj.options.connections, CHILD_NFORKS))) { LOG(log_error, logtype_afpd, "main: server_child alloc: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } + + sigemptyset(&sigs); + pthread_sigmask(SIG_SETMASK, &sigs, NULL); memset(&sv, 0, sizeof(sv)); /* linux at least up to 2.4.22 send a SIGXFZ for vfat fs, @@ -269,11 +250,12 @@ int main(int ac, char **av) sigemptyset( &sv.sa_mask ); if (sigaction(SIGXFSZ, &sv, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } #endif - sv.sa_handler = child_handler; + sv.sa_handler = afp_goaway; /* handler for all sigs */ + sigemptyset( &sv.sa_mask ); sigaddset(&sv.sa_mask, SIGALRM); sigaddset(&sv.sa_mask, SIGHUP); @@ -283,10 +265,9 @@ int main(int ac, char **av) sv.sa_flags = SA_RESTART; if ( sigaction( SIGCHLD, &sv, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } - sv.sa_handler = afp_goaway; sigemptyset( &sv.sa_mask ); sigaddset(&sv.sa_mask, SIGALRM); sigaddset(&sv.sa_mask, SIGTERM); @@ -296,7 +277,7 @@ int main(int ac, char **av) sv.sa_flags = SA_RESTART; if ( sigaction( SIGUSR1, &sv, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } sigemptyset( &sv.sa_mask ); @@ -308,10 +289,9 @@ int main(int ac, char **av) sv.sa_flags = SA_RESTART; if ( sigaction( SIGHUP, &sv, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } - sigemptyset( &sv.sa_mask ); sigaddset(&sv.sa_mask, SIGALRM); sigaddset(&sv.sa_mask, SIGHUP); @@ -321,7 +301,7 @@ int main(int ac, char **av) sv.sa_flags = SA_RESTART; if ( sigaction( SIGTERM, &sv, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } sigemptyset( &sv.sa_mask ); @@ -333,10 +313,10 @@ int main(int ac, char **av) sv.sa_flags = SA_RESTART; if (sigaction(SIGQUIT, &sv, NULL ) < 0 ) { LOG(log_error, logtype_afpd, "main: sigaction: %s", strerror(errno) ); - exit(EXITERR_SYS); + afp_exit(EXITERR_SYS); } - /* afpd.conf: not in config file: lockfile, connections, configfile + /* afp.conf: not in config file: lockfile, configfile * preference: command-line provides defaults. * config file over-writes defaults. * @@ -355,25 +335,31 @@ int main(int ac, char **av) sigaddset(&sigs, SIGCHLD); pthread_sigmask(SIG_BLOCK, &sigs, NULL); - if (!(configs = configinit(&default_options))) { + if (configinit(&obj) != 0) { LOG(log_error, logtype_afpd, "main: no servers configured"); - exit(EXITERR_CONF); + afp_exit(EXITERR_CONF); } pthread_sigmask(SIG_UNBLOCK, &sigs, NULL); - /* Register CNID */ + /* Initialize */ cnid_init(); - + /* watch atp, dsi sockets and ipc parent/child file descriptor. */ - disasociated_ipc_fd = ipc_server_uds(_PATH_AFP_IPC); - fd_set_listening_sockets(); + + if (obj.options.flags & OPTION_KEEPSESSIONS) { + LOG(log_note, logtype_afpd, "Activating continuous service"); + disasociated_ipc_fd = ipc_server_uds(_PATH_AFP_IPC); + } + + fd_set_listening_sockets(&obj); /* set limits */ (void)setlimits(); afp_child_t *child; - int fd[2]; /* we only use one, but server_child_add expects [2] */ + int recon_ipc_fd; pid_t pid; + int saveerrno; /* wait for an appleshare connection. parent remains in the loop * while the children get handled by afp_over_{asp,dsi}. this is @@ -386,27 +372,28 @@ int main(int ac, char **av) pthread_sigmask(SIG_UNBLOCK, &sigs, NULL); ret = poll(fdset, fdset_used, -1); pthread_sigmask(SIG_BLOCK, &sigs, NULL); - int saveerrno = errno; + saveerrno = errno; + + if (gotsigchld) { + gotsigchld = 0; + child_handler(); + continue; + } if (reloadconfig) { nologin++; auth_unload(); - fd_reset_listening_sockets(); + fd_reset_listening_sockets(&obj); 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))) { + + configfree(&obj, NULL); + if (configinit(&obj) != 0) { LOG(log_error, logtype_afpd, "config re-read: no servers configured"); - exit(EXITERR_CONF); + afp_exit(EXITERR_CONF); } - fd_set_listening_sockets(); + fd_set_listening_sockets(&obj); nologin = 0; reloadconfig = 0; @@ -425,15 +412,20 @@ int main(int ac, char **av) } for (int i = 0; i < fdset_used; i++) { - if (fdset[i].revents & (POLLIN | POLLERR | POLLHUP)) { + if (fdset[i].revents & (POLLIN | POLLERR | POLLHUP | POLLNVAL)) { 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)) { + if (child = dsi_start(&obj, (DSI *)polldata[i].data, 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); + fdset_add_fd(obj.options.connections + AFP_LISTENERS + FDSET_SAFETY, + &fdset, + &polldata, + &fdset_used, + &fdset_size, + child->ipc_fd, + IPC_FD, + child); } break; @@ -441,11 +433,11 @@ int main(int ac, char **av) 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; - if (child->disasociated) { + if (ipc_server_read(server_children, child->ipc_fd) != 0) { + fdset_del_fd(&fdset, &polldata, &fdset_used, &fdset_size, child->ipc_fd); + close(child->ipc_fd); + child->ipc_fd = -1; + if ((obj.options.flags & OPTION_KEEPSESSIONS) && child->disasociated) { LOG(log_note, logtype_afpd, "main: removing reattached child[%u]", child->pid); server_child_remove(server_children, CHILD_DSIFORK, child->pid); } @@ -454,22 +446,31 @@ int main(int ac, char **av) case DISASOCIATED_IPC_FD: LOG(log_debug, logtype_afpd, "main: IPC reconnect request"); - if ((fd[0] = accept(disasociated_ipc_fd, NULL, NULL)) == -1) { + if ((recon_ipc_fd = accept(disasociated_ipc_fd, NULL, NULL)) == -1) { LOG(log_error, logtype_afpd, "main: accept: %s", strerror(errno)); break; } - if (readt(fd[0], &pid, sizeof(pid_t), 0, 1) != sizeof(pid_t)) { + if (readt(recon_ipc_fd, &pid, sizeof(pid_t), 0, 1) != sizeof(pid_t)) { LOG(log_error, logtype_afpd, "main: readt: %s", strerror(errno)); - close(fd[0]); + close(recon_ipc_fd); + break; } - LOG(log_note, logtype_afpd, "main: IPC reconnect from [%u]", pid); - if ((child = server_child_add(server_children, CHILD_DSIFORK, pid, fd)) == NULL) { + LOG(log_note, logtype_afpd, "main: IPC reconnect from pid [%u]", pid); + + if ((child = server_child_add(server_children, CHILD_DSIFORK, pid, recon_ipc_fd)) == NULL) { LOG(log_error, logtype_afpd, "main: server_child_add"); - close(fd[0]); + close(recon_ipc_fd); break; } child->disasociated = 1; - fdset_add_fd(&fdset, &polldata, &fdset_used, &fdset_size, fd[0], IPC_FD, child); + fdset_add_fd(obj.options.connections + AFP_LISTENERS + FDSET_SAFETY, + &fdset, + &polldata, + &fdset_used, + &fdset_size, + recon_ipc_fd, + IPC_FD, + child); break; default: @@ -482,3 +483,22 @@ int main(int ac, char **av) return 0; } + +static afp_child_t *dsi_start(AFPObj *obj, DSI *dsi, server_child *server_children) +{ + afp_child_t *child = NULL; + + if (dsi_getsession(dsi, server_children, obj->options.tickleval, &child) != 0) { + LOG(log_error, logtype_afpd, "dsi_start: session error: %s", strerror(errno)); + return NULL; + } + + /* we've forked. */ + if (child == NULL) { + configfree(obj, dsi); + afp_over_dsi(obj); /* start a session */ + exit (0); + } + + return child; +}