/*
- * $Id: afp_dsi.c,v 1.44 2009-10-22 07:40:50 didg Exp $
- *
* Copyright (c) 1999 Adrian Sun (asun@zoology.washington.edu)
* Copyright (c) 1990,1993 Regents of The University of Michigan.
* All Rights Reserved. See COPYRIGHT.
#include "switch.h"
#include "auth.h"
#include "fork.h"
+#include "dircache.h"
#ifdef FORCE_UIDGID
#warning UIDGID
#define CHILD_SLEEPING (1 << 2)
#define CHILD_DATA (1 << 3)
+/*
+ * We generally pass this from afp_over_dsi to all afp_* funcs, so it should already be
+ * available everywhere. Unfortunately some funcs (eg acltoownermode) need acces to it
+ * but are deeply nested in the function chain with the caller already without acces to it.
+ * Changing this would require adding a reference to the caller which itself might be
+ * called in many places (eg acltoownermode is called from accessmode).
+ * The only sane way out is providing a copy of it here:
+ */
+AFPObj *AFPobj = NULL;
+
static struct {
AFPObj *obj;
unsigned char flags;
{
DSI *dsi = obj->handle;
+ /* we may have been called from a signal handler caught when afpd was running
+ * as uid 0, that's the wrong user for volume's prexec_close scripts if any,
+ * restore our login user
+ */
+ if (geteuid() != obj->uid) {
+ if (seteuid( obj->uid ) < 0) {
+ LOG(log_error, logtype_afpd, "can't seteuid(%u) back %s: uid: %u, euid: %u",
+ obj->uid, strerror(errno), getuid(), geteuid());
+ exit(EXITERR_SYS);
+ }
+ }
+
close_all_vol();
if (obj->logout)
(*obj->logout)();
- LOG(log_info, logtype_afpd, "%.2fKB read, %.2fKB written",
+ LOG(log_info, logtype_afpd, "AFP statistics: %.2f KB read, %.2f KB written",
dsi->read_count/1024.0, dsi->write_count/1024.0);
+ log_dircache_stat();
dsi_close(dsi);
}
child.flags |= CHILD_DIE;
/* shutdown and don't reconnect. server going down in 5 minutes. */
setmessage("The server is going down for maintenance.");
- dsi_attention(child.obj->handle, AFPATTN_SHUTDOWN | AFPATTN_NORECONNECT |
- AFPATTN_MESG | AFPATTN_TIME(5));
+ if (dsi_attention(child.obj->handle, AFPATTN_SHUTDOWN | AFPATTN_NORECONNECT |
+ AFPATTN_MESG | AFPATTN_TIME(5)) < 0) {
+ DSI *dsi = (DSI *) child.obj->handle;
+ dsi->down_request = 1;
+ }
it.it_interval.tv_sec = 0;
it.it_interval.tv_usec = 0;
LOG(log_error, logtype_afpd, "afp_timedown: sigaction SIGHUP: %s", strerror(errno) );
afp_dsi_die(EXITERR_SYS);
}
-
}
/* ---------------------------------
* SIGHUP reload configuration file
- * FIXME here or we wait ?
-*/
+ */
volatile int reload_request = 0;
static void afp_dsi_reload(int sig _U_)
reload_request = 1;
}
+/* ---------------------------------
+ * SIGINT: enable max_debug LOGging
+ */
+static volatile sig_atomic_t debug_request = 0;
+
+static void afp_dsi_debug(int sig _U_)
+{
+ debug_request = 1;
+}
+
/* ---------------------- */
#ifdef SERVERTEXT
static void afp_dsi_getmesg (int sig _U_)
DSI *dsi = (DSI *) child.obj->handle;
dsi->msg_request = 1;
- dsi_attention(child.obj->handle, AFPATTN_MESG | AFPATTN_TIME(5));
+ if (dsi_attention(child.obj->handle, AFPATTN_MESG | AFPATTN_TIME(5)) < 0)
+ dsi->msg_request = 2;
}
#endif /* SERVERTEXT */
/* read msg if any, it could be done in afp_getsrvrmesg */
if (dsi->msg_request) {
+ if (dsi->msg_request == 2) {
+ /* didn't send it in signal handler */
+ dsi_attention(child.obj->handle, AFPATTN_MESG | AFPATTN_TIME(5));
+ }
dsi->msg_request = 0;
readmessage(child.obj);
}
+ if (dsi->down_request) {
+ dsi->down_request = 0;
+ dsi_attention(child.obj->handle, AFPATTN_SHUTDOWN | AFPATTN_NORECONNECT |
+ AFPATTN_MESG | AFPATTN_TIME(5));
+ }
}
/* -------------------------------------------
u_int32_t err, cmd;
u_int8_t function;
struct sigaction action;
- const char *afpcmpstr;
+ AFPobj = obj;
obj->exit = afp_dsi_die;
obj->reply = (int (*)()) dsi_cmdreply;
obj->attention = (int (*)(void *, AFPUserBytes)) dsi_attention;
sigaddset(&action.sa_mask, SIGALRM);
sigaddset(&action.sa_mask, SIGTERM);
sigaddset(&action.sa_mask, SIGUSR1);
+ sigaddset(&action.sa_mask, SIGINT);
#ifdef SERVERTEXT
sigaddset(&action.sa_mask, SIGUSR2);
#endif
sigaddset(&action.sa_mask, SIGALRM);
sigaddset(&action.sa_mask, SIGHUP);
sigaddset(&action.sa_mask, SIGUSR1);
+ sigaddset(&action.sa_mask, SIGINT);
#ifdef SERVERTEXT
sigaddset(&action.sa_mask, SIGUSR2);
#endif
sigaddset(&action.sa_mask, SIGTERM);
sigaddset(&action.sa_mask, SIGUSR1);
sigaddset(&action.sa_mask, SIGHUP);
+ sigaddset(&action.sa_mask, SIGINT);
action.sa_flags = SA_RESTART;
if ( sigaction( SIGUSR2, &action, NULL) < 0 ) {
LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) );
sigaddset(&action.sa_mask, SIGALRM);
sigaddset(&action.sa_mask, SIGHUP);
sigaddset(&action.sa_mask, SIGTERM);
+ sigaddset(&action.sa_mask, SIGINT);
#ifdef SERVERTEXT
sigaddset(&action.sa_mask, SIGUSR2);
#endif
afp_dsi_die(EXITERR_SYS);
}
+ /* SIGINT - enable max_debug LOGging to /tmp/afpd.PID.XXXXXX */
+ action.sa_handler = afp_dsi_debug;
+ sigfillset( &action.sa_mask );
+ action.sa_flags = SA_RESTART;
+ if ( sigaction( SIGINT, &action, NULL) < 0 ) {
+ LOG(log_error, logtype_afpd, "afp_over_dsi: sigaction: %s", strerror(errno) );
+ afp_dsi_die(EXITERR_SYS);
+ }
+
#ifndef DEBUGGING
/* tickle handler */
action.sa_handler = alarm_handler;
sigaddset(&action.sa_mask, SIGHUP);
sigaddset(&action.sa_mask, SIGTERM);
sigaddset(&action.sa_mask, SIGUSR1);
+ sigaddset(&action.sa_mask, SIGINT);
#ifdef SERVERTEXT
sigaddset(&action.sa_mask, SIGUSR2);
#endif
}
#endif /* DEBUGGING */
+ if (dircache_init(obj->options.dircachesize) != 0)
+ afp_dsi_die(EXITERR_SYS);
+
/* get stuck here until the end */
while ((cmd = dsi_receive(dsi))) {
child.tickle = 0;
child.flags &= ~CHILD_SLEEPING;
dsi_sleep(dsi, 0); /* wake up */
+
if (reload_request) {
reload_request = 0;
load_volumes(child.obj);
+ dircache_dump();
+ log_dircache_stat();
+ }
+
+ /* The first SIGINT enables debugging, the next restores the config */
+ if (debug_request) {
+ static int debugging = 0;
+ debug_request = 0;
+
+ if (debugging) {
+ if (obj->options.logconfig)
+ setuplog(obj->options.logconfig);
+ else
+ setuplog("default log_note");
+ debugging = 0;
+ } else {
+ char logstr[50];
+ debugging = 1;
+ sprintf(logstr, "default log_maxdebug /tmp/afpd.%u.XXXXXX", getpid());
+ setuplog(logstr);
+ }
}
if (cmd == DSIFUNC_TICKLE) {
dsi->datalen = DSI_DATASIZ;
child.flags |= CHILD_RUNNING;
- afpcmpstr = AfpNum2name(function);
- LOG(log_debug, logtype_afpd, "=> Start AFP command: %s", afpcmpstr);
+ LOG(log_debug, logtype_afpd, "<== Start AFP command: %s", AfpNum2name(function));
err = (*afp_switch[function])(obj,
- dsi->commands, dsi->cmdlen,
- dsi->data, &dsi->datalen);
+ (char *)&dsi->commands, dsi->cmdlen,
+ (char *)&dsi->data, &dsi->datalen);
+
+ LOG(log_debug, logtype_afpd, "==> Finished AFP command: %s -> %s",
+ AfpNum2name(function), AfpErr2name(err));
+
+ dir_free_invalid_q();
- LOG(log_debug, logtype_afpd, "=> Finished AFP command: %s", afpcmpstr);
#ifdef FORCE_UIDGID
/* bring everything back to old euid, egid */
if (obj->force_uid)
if ( afp_switch[ function ] != NULL ) {
dsi->datalen = DSI_DATASIZ;
child.flags |= CHILD_RUNNING;
- err = (*afp_switch[function])(obj, dsi->commands, dsi->cmdlen,
- dsi->data, &dsi->datalen);
+
+ LOG(log_debug, logtype_afpd, "<== Start AFP command: %s", AfpNum2name(function));
+
+ err = (*afp_switch[function])(obj,
+ (char *)&dsi->commands, dsi->cmdlen,
+ (char *)&dsi->data, &dsi->datalen);
+
+ LOG(log_debug, logtype_afpd, "==> Finished AFP command: %s -> %s",
+ AfpNum2name(function), AfpErr2name(err));
+
child.flags &= ~CHILD_RUNNING;
#ifdef FORCE_UIDGID
/* bring everything back to old euid, egid */
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