minix/servers/iso9660fs/main.c
2009-10-01 14:34:17 +00:00

105 lines
3 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 "const.h"
#include "glo.h"
/* Declare some local functions. */
FORWARD _PROTOTYPE(void init_server, (void) );
FORWARD _PROTOTYPE(void get_work, (message *m_in) );
/*===========================================================================*
* main *
*===========================================================================*/
PUBLIC int main(void) {
int who_e, ind, error;
message m;
/* Initialize the server, then go to work. */
init_server();
fs_m_in.m_type = FS_READY;
if (send(FS_PROC_NR, &fs_m_in) != OK) {
printf("ISO9660FS(%d): Error sending login to VFS\n", SELF_E);
return -1;
}
for (;;) {
/* Wait for request message. */
get_work(&fs_m_in);
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 != FS_PROC_NR) { /* If the message is not for us just
* continue */
continue;
}
req_nr = fs_m_in.m_type;
if (req_nr < VFS_BASE) {
fs_m_in.m_type += VFS_BASE;
req_nr = fs_m_in.m_type;
}
ind= req_nr-VFS_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;
reply(who_e, &fs_m_out); /* returns the response to VFS */
}
}
/*===========================================================================*
* init_server *
*===========================================================================*/
PRIVATE void init_server(void)
{
int i;
/* Init driver mapping */
for (i = 0; i < NR_DEVICES; ++i)
driver_endpoints[i].driver_e = NONE;
/* SELF_E will contain the id of this process */
SELF_E = getprocnr();
/* hash_init(); */ /* Init the table with the ids */
setenv("TZ","",1); /* Used to calculate the time */
}
/*===========================================================================*
* get_work *
*===========================================================================*/
PRIVATE void get_work(m_in)
message *m_in; /* pointer to message */
{
int s; /* receive status */
if (OK != (s = receive(ANY, m_in))) /* wait for message */
panic("I9660FS","receive failed", s);
}
/*===========================================================================*
* reply *
*===========================================================================*/
PUBLIC void reply(who, m_out)
int who;
message *m_out; /* report result */
{
if (OK != send(who, m_out)) /* send the message */
printf("I9660FS(%d) was unable to send reply\n", SELF_E);
}