minix/servers/iso9660fs/main.c
Ben Gras 35a108b911 panic() cleanup.
this change
   - makes panic() variadic, doing full printf() formatting -
     no more NO_NUM, and no more separate printf() statements
     needed to print extra info (or something in hex) before panicing
   - unifies panic() - same panic() name and usage for everyone -
     vm, kernel and rest have different names/syntax currently
     in order to implement their own luxuries, but no longer
   - throws out the 1st argument, to make source less noisy.
     the panic() in syslib retrieves the server name from the kernel
     so it should be clear enough who is panicing; e.g.
         panic("sigaction failed: %d", errno);
     looks like:
         at_wini(73130): panic: sigaction failed: 0
         syslib:panic.c: stacktrace: 0x74dc 0x2025 0x100a
   - throws out report() - printf() is more convenient and powerful
   - harmonizes/fixes the use of panic() - there were a few places
     that used printf-style formatting (didn't work) and newlines
     (messes up the formatting) in panic()
   - throws out a few per-server panic() functions
   - cleans up a tie-in of tty with panic()

merging printf() and panic() statements to be done incrementally.
2010-03-05 15:05:11 +00:00

124 lines
3.5 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 get_work, (message *m_in) );
/* SEF functions and variables. */
FORWARD _PROTOTYPE( void sef_local_startup, (void) );
FORWARD _PROTOTYPE( int sef_cb_init_fresh, (int type, sef_init_info_t *info) );
/*===========================================================================*
* main *
*===========================================================================*/
PUBLIC int main(void) {
int who_e, ind, error;
message m;
/* SEF local startup. */
sef_local_startup();
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 */
}
}
/*===========================================================================*
* sef_local_startup *
*===========================================================================*/
PRIVATE void sef_local_startup()
{
/* Register init callbacks. */
sef_setcb_init_fresh(sef_cb_init_fresh);
sef_setcb_init_restart(sef_cb_init_restart_fail);
/* No live update support for now. */
/* Let SEF perform startup. */
sef_startup();
}
/*===========================================================================*
* sef_cb_init_fresh *
*===========================================================================*/
PRIVATE int sef_cb_init_fresh(int type, sef_init_info_t *info)
{
/* Initialize the iso9660fs server. */
int i, r;
/* 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 */
fs_m_in.m_type = FS_READY;
if ((r = send(FS_PROC_NR, &fs_m_in)) != OK) {
panic("Error sending login to VFS: %d", r);
}
return(OK);
}
/*===========================================================================*
* get_work *
*===========================================================================*/
PRIVATE 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 *
*===========================================================================*/
PUBLIC void reply(who, m_out)
int who;
message *m_out; /* report result */
{
if (OK != send(who, m_out)) /* send the message */
printf("ISOFS(%d) was unable to send reply\n", SELF_E);
}