148 lines
4.2 KiB
C
148 lines
4.2 KiB
C
/* This file contains the main directory for the server. It waits for a
|
|
* request and then send a response. */
|
|
|
|
#include "inc.h"
|
|
#include <minix/vfsif.h>
|
|
#include <assert.h>
|
|
#include "const.h"
|
|
#include "glo.h"
|
|
|
|
/* Declare some local functions. */
|
|
static void get_work(message *m_in);
|
|
|
|
/* SEF functions and variables. */
|
|
static void sef_local_startup(void);
|
|
static int sef_cb_init_fresh(int type, sef_init_info_t *info);
|
|
static void sef_cb_signal_handler(int signo);
|
|
|
|
/*===========================================================================*
|
|
* main *
|
|
*===========================================================================*/
|
|
int main(void) {
|
|
endpoint_t who_e;
|
|
int ind, error, transid;
|
|
|
|
/* SEF local startup. */
|
|
sef_local_startup();
|
|
|
|
for (;;) {
|
|
|
|
/* Wait for request message. */
|
|
get_work(&fs_m_in);
|
|
|
|
transid = TRNS_GET_ID(fs_m_in.m_type);
|
|
fs_m_in.m_type = TRNS_DEL_ID(fs_m_in.m_type);
|
|
if (fs_m_in.m_type == 0) {
|
|
assert(!IS_VFS_FS_TRANSID(transid));
|
|
fs_m_in.m_type = transid; /* Backwards compat. */
|
|
transid = 0;
|
|
} else
|
|
assert(IS_VFS_FS_TRANSID(transid));
|
|
|
|
error = OK;
|
|
|
|
caller_uid = -1; /* To trap errors */
|
|
caller_gid = -1;
|
|
|
|
who_e = fs_m_in.m_source; /* source of the request */
|
|
|
|
if (who_e != VFS_PROC_NR) { /* If the message is not for us just
|
|
* continue */
|
|
continue;
|
|
}
|
|
|
|
req_nr = fs_m_in.m_type;
|
|
|
|
if (req_nr < FS_BASE) {
|
|
fs_m_in.m_type += FS_BASE;
|
|
req_nr = fs_m_in.m_type;
|
|
}
|
|
|
|
ind = req_nr-FS_BASE;
|
|
|
|
if (ind < 0 || ind >= NREQS) {
|
|
error = EINVAL;
|
|
} else
|
|
error = (*fs_call_vec[ind])(); /* Process the request calling
|
|
* the appropriate function. */
|
|
|
|
fs_m_out.m_type = error;
|
|
if (IS_VFS_FS_TRANSID(transid)) {
|
|
/* If a transaction ID was set, reset it */
|
|
fs_m_out.m_type = TRNS_ADD_ID(fs_m_out.m_type, transid);
|
|
}
|
|
reply(who_e, &fs_m_out); /* returns the response to VFS */
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* sef_local_startup *
|
|
*===========================================================================*/
|
|
static void sef_local_startup()
|
|
{
|
|
/* Register init callbacks. */
|
|
sef_setcb_init_fresh(sef_cb_init_fresh);
|
|
sef_setcb_init_restart(sef_cb_init_fail);
|
|
|
|
/* No live update support for now. */
|
|
|
|
/* Register signal callbacks. */
|
|
sef_setcb_signal_handler(sef_cb_signal_handler);
|
|
|
|
/* Let SEF perform startup. */
|
|
sef_startup();
|
|
|
|
lmfs_buf_pool(10);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* sef_cb_init_fresh *
|
|
*===========================================================================*/
|
|
static int sef_cb_init_fresh(int type, sef_init_info_t *info)
|
|
{
|
|
/* Initialize the iso9660fs server. */
|
|
|
|
/* hash_init(); */ /* Init the table with the ids */
|
|
setenv("TZ","",1); /* Used to calculate the time */
|
|
|
|
return(OK);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* sef_cb_signal_handler *
|
|
*===========================================================================*/
|
|
static void sef_cb_signal_handler(int signo)
|
|
{
|
|
/* Only check for termination signal, ignore anything else. */
|
|
if (signo != SIGTERM) return;
|
|
|
|
/* No need to do a sync, as this is a read-only file system. */
|
|
|
|
/* If the file system has already been unmounted, exit immediately.
|
|
* We might not get another message.
|
|
*/
|
|
if (unmountdone) exit(0);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* get_work *
|
|
*===========================================================================*/
|
|
static void get_work(m_in)
|
|
message *m_in; /* pointer to message */
|
|
{
|
|
int s; /* receive status */
|
|
if (OK != (s = sef_receive(ANY, m_in))) /* wait for message */
|
|
panic("sef_receive failed: %d", s);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* reply *
|
|
*===========================================================================*/
|
|
void reply(who, m_out)
|
|
int who;
|
|
message *m_out; /* report result */
|
|
{
|
|
if (OK != ipc_send(who, m_out)) /* send the message */
|
|
printf("ISOFS(%d) was unable to send reply\n", sef_self());
|
|
}
|