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tenebrae2/sys_linux.c
cholleme a6b023edc3 no message
2003-01-17 21:18:53 +00:00

597 lines
15 KiB
C
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#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/stat.h>
#include <string.h>
#include <ctype.h>
#include <sys/wait.h>
#include <sys/mman.h>
#include <errno.h>
#include <time.h>
#include "quakedef.h"
qboolean isDedicated;
int nostdout = 0;
// user preference directory
#if defined (USERPREF_DIR)
char *prefdir= ".quake";
#endif
#if defined (BASEDIR)
/* - DC - won't work without this */
#define macro_string(x) _macro_string(x)
#define _macro_string(x) #x
char *basedir = macro_string(BASEDIR);
#undef macro_string
#undef _macro_string
#else
char *basedir = ".";
#endif
// caching is disabled
char *cachedir = "/tmp";
cvar_t sys_linerefresh = { "sys_linerefresh", "0" }; // set for entity display
// =======================================================================
// General routines
// =======================================================================
void Sys_DebugNumber (int y, int val)
{
}
/*
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
char text[1024];
va_start (argptr,fmt);
vsprintf (text,fmt,argptr);
va_end (argptr);
fprintf(stderr, "%s", text);
Con_Print (text);
}
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
char text[1024], *t_p;
int l, r;
if (nostdout)
return;
va_start (argptr,fmt);
vsprintf (text,fmt,argptr);
va_end (argptr);
l = strlen(text);
t_p = text;
// make sure everything goes through, even though we are non-blocking
while (l)
{
r = write (1, text, l);
if (r != l)
sleep (0);
if (r > 0)
{
t_p += r;
l -= r;
}
}
}
*/
void Sys_Printf (char *fmt, ...)
{
va_list argptr;
char text[4096];
unsigned char *p;
va_start (argptr, fmt);
vsprintf (text, fmt, argptr);
va_end (argptr);
if (strlen (text) > sizeof (text))
Sys_Error ("memory overwrite in Sys_Printf");
if (nostdout)
return;
for (p = (unsigned char *) text; *p; p++)
{
*p &= 0x7f;
if ((*p > 128 || *p < 32) && *p != 10 && *p != 13 && *p != 9)
printf ("[%02x]", *p);
else
putc (*p, stdout);
}
}
#if 0
static char end1[] =
"\x1b[?7h\x1b[40m\x1b[2J\x1b[0;1;41m\x1b[1;1H QUAKE: The Doomed Dimension \x1b[33mby \x1b[44mid\x1b[41m Software \x1b[2;1H ---------------------------------------------------------------------------- \x1b[3;1H CALL 1-800-IDGAMES TO ORDER OR FOR TECHNICAL SUPPORT \x1b[4;1H PRICE: $45.00 (PRICES MAY VARY OUTSIDE THE US.) \x1b[5;1H \x1b[6;1H \x1b[37mYes! You only have one fourth of this incredible epic. That is because most \x1b[7;1H of you have paid us nothing or at most, very little. You could steal the \x1b[8;1H game from a friend. But we both know you'll be punished by God if you do. \x1b[9;1H \x1b[33mWHY RISK ETERNAL DAMNATION? CALL 1-800-IDGAMES AND BUY NOW! \x1b[10;1H \x1b[37mRemember, we love you almost as much as He does. \x1b[11;1H \x1b[12;1H \x1b[33mProgramming: \x1b[37mJohn Carmack, Michael Abrash, John Cash \x1b[13;1H \x1b[33mDesign: \x1b[37mJohn Romero, Sandy Petersen, American McGee, Tim Willits \x1b[14;1H \x1b[33mArt: \x1b[37mAdrian Carmack, Kevin Cloud \x1b[15;1H \x1b[33mBiz: \x1b[37mJay Wilbur, Mike Wilson, Donna Jackson \x1b[16;1H \x1b[33mProjects: \x1b[37mShawn Green \x1b[33mSupport: \x1b[37mBarrett Alexander \x1b[17;1H \x1b[33mSound Effects: \x1b[37mTrent Reznor and Nine Inch Nails \x1b[18;1H For other information or details on ordering outside the US, check out the \x1b[19;1H files accompanying QUAKE or our website at http://www.idsoftware.com. \x1b[20;1H \x1b[0;41mQuake is a trademark of Id Software, inc., (c)1996 Id Software, inc. \x1b[21;1H All rights reserved. NIN logo is a registered trademark licensed to \x1b[22;1H Nothing Interactive, Inc. All rights reserved. \x1b[40m\x1b[23;1H\x1b[0m";
static char end2[] =
"\x1b[?7h\x1b[40m\x1b[2J\x1b[0;1;41m\x1b[1;1H QUAKE \x1b[33mby \x1b[44mid\x1b[41m Software \x1b[2;1H ----------------------------------------------------------------------------- \x1b[3;1H \x1b[37mWhy did you quit from the registered version of QUAKE? Did the \x1b[4;1H scary monsters frighten you? Or did Mr. Sandman tug at your \x1b[5;1H little lids? No matter! What is important is you love our \x1b[6;1H game, and gave us your money. Congratulations, you are probably \x1b[7;1H not a thief. \x1b[8;1H Thank You. \x1b[9;1H \x1b[33;44mid\x1b[41m Software is: \x1b[10;1H PROGRAMMING: \x1b[37mJohn Carmack, Michael Abrash, John Cash \x1b[11;1H \x1b[33mDESIGN: \x1b[37mJohn Romero, Sandy Petersen, American McGee, Tim Willits \x1b[12;1H \x1b[33mART: \x1b[37mAdrian Carmack, Kevin Cloud \x1b[13;1H \x1b[33mBIZ: \x1b[37mJay Wilbur, Mike Wilson \x1b[33mPROJECTS MAN: \x1b[37mShawn Green \x1b[14;1H \x1b[33mBIZ ASSIST: \x1b[37mDonna Jackson \x1b[33mSUPPORT: \x1b[37mBarrett Alexander \x1b[15;1H \x1b[33mSOUND EFFECTS AND MUSIC: \x1b[37mTrent Reznor and Nine Inch Nails \x1b[16;1H \x1b[17;1H If you need help running QUAKE refer to the text files in the \x1b[18;1H QUAKE directory, or our website at http://www.idsoftware.com. \x1b[19;1H If all else fails, call our technical support at 1-800-IDGAMES. \x1b[20;1H \x1b[0;41mQuake is a trademark of Id Software, inc., (c)1996 Id Software, inc. \x1b[21;1H All rights reserved. NIN logo is a registered trademark licensed \x1b[22;1H to Nothing Interactive, Inc. All rights reserved. \x1b[23;1H\x1b[40m\x1b[0m";
#endif
void Sys_Quit (void)
{
Host_Shutdown ();
fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
#if 0
if (registered.value)
printf ("%s", end2);
else
printf ("%s", end1);
#endif
fflush (stdout);
exit (0);
}
void Sys_Init (void)
{
#if id386
Sys_SetFPCW ();
#endif
}
void Sys_Error (char *error, ...)
{
va_list argptr;
char string[4096];
// change stdin to non blocking
fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) & ~FNDELAY);
va_start (argptr, error);
vsprintf (string, error, argptr);
va_end (argptr);
fprintf (stderr, "Error: %s\n", string);
Host_Shutdown ();
exit (1);
}
void Sys_Warn (char *warning, ...)
{
va_list argptr;
char string[4096];
va_start (argptr, warning);
vsprintf (string, warning, argptr);
va_end (argptr);
fprintf (stderr, "Warning: %s", string);
}
/*
============
Sys_FileTime
returns -1 if not present
============
*/
int Sys_FileTime (char *path)
{
struct stat buf;
if (stat (path, &buf) == -1)
return -1;
return buf.st_mtime;
}
void Sys_mkdir (char *path)
{
mkdir (path, 0777);
}
void Sys_Strtime(char *buf)
{
struct tm *tm_;
static time_t t_;
time(&t_);
tm_=gmtime(&t_);
sprintf(buf,"%02d:%02d:%02d",tm_->tm_hour,tm_->tm_min,tm_->tm_sec);
}
// directory entry list internal data
#include <glob.h>
typedef struct {
glob_t globbuf;
size_t count;
} uxdirdata_t;
dirdata_t *Sys_Findfirst (char *dir, char *filter, dirdata_t *dirdata)
{
uxdirdata_t *uxdata;
if (dirdata && filter){
char dirfilter[MAX_OSPATH];
uxdata=Z_Malloc (sizeof(uxdirdata_t));
sprintf (dirfilter,"%s/%s", dir, filter);
glob (dirfilter,0,NULL,&uxdata->globbuf);
if (uxdata->globbuf.gl_pathc){
dirdata->internal=uxdata;
strncpy (dirdata->entry,uxdata->globbuf.gl_pathv[0],sizeof(dirdata->entry));
uxdata->count=0;
return dirdata;
}
}
return NULL;
}
dirdata_t *Sys_Findnext (dirdata_t *dirdata)
{
uxdirdata_t *uxdata;
if (dirdata){
uxdata=dirdata->internal;
if (uxdata) {
uxdata->count++;
// next entry ?
if (uxdata->count<uxdata->globbuf.gl_pathc){
strncpy (dirdata->entry,uxdata->globbuf.gl_pathv[uxdata->count],sizeof(dirdata->entry));
return dirdata;
}
// no -> close
globfree (&uxdata->globbuf);
Z_Free (dirdata->internal);
dirdata->internal=NULL;
}
}
return NULL;
}
void Sys_Findclose (dirdata_t *dirdata)
{
uxdirdata_t *uxdata;
if (dirdata){
uxdata=dirdata->internal;
if (uxdata){
globfree (&uxdata->globbuf);
Z_Free (uxdata);
dirdata->internal=NULL;
}
}
}
int Sys_FileOpenRead (char *path, int *handle)
{
int h;
struct stat fileinfo;
h = open (path, O_RDONLY, 0666);
*handle = h;
if (h == -1)
return -1;
if (fstat (h, &fileinfo) == -1)
Sys_Error ("Error fstating %s", path);
return fileinfo.st_size;
}
int Sys_FileOpenWrite (char *path)
{
int handle;
umask (0);
handle = open (path, O_RDWR | O_CREAT | O_TRUNC, 0666);
if (handle == -1)
Sys_Error ("Error opening %s: %s", path, strerror (errno));
return handle;
}
int Sys_FileWrite (int handle, void *src, int count)
{
return write (handle, src, count);
}
void Sys_FileClose (int handle)
{
close (handle);
}
void Sys_FileSeek (int handle, int position)
{
lseek (handle, position, SEEK_SET);
}
int Sys_FileRead (int handle, void *dest, int count)
{
return read (handle, dest, count);
}
void Sys_DebugLog (char *file, char *fmt, ...)
{
va_list argptr;
static char data[4096];
int fd;
va_start (argptr, fmt);
vsprintf (data, fmt, argptr);
va_end (argptr);
// fd = open(file, O_WRONLY | O_BINARY | O_CREAT | O_APPEND, 0666);
fd = open (file, O_WRONLY | O_CREAT | O_APPEND, 0666);
write (fd, data, strlen (data));
close (fd);
}
void Sys_EditFile (char *filename)
{
char cmd[256];
char *term;
char *editor;
term = getenv ("TERM");
if (term && !strcmp (term, "xterm"))
{
editor = getenv ("VISUAL");
if (!editor)
editor = getenv ("EDITOR");
if (!editor)
editor = getenv ("EDIT");
if (!editor)
editor = "vi";
sprintf (cmd, "xterm -e %s %s", editor, filename);
system (cmd);
}
}
double Sys_FloatTime (void)
{
struct timeval tp;
struct timezone tzp;
static int secbase;
gettimeofday (&tp, &tzp);
if (!secbase)
{
secbase = tp.tv_sec;
return tp.tv_usec / 1000000.0;
}
return (tp.tv_sec - secbase) + tp.tv_usec / 1000000.0;
}
// =======================================================================
// Sleeps for microseconds
// =======================================================================
static volatile int oktogo;
void alarm_handler (int x)
{
oktogo = 1;
}
void Sys_LineRefresh (void)
{
}
void floating_point_exception_handler (int whatever)
{
// Sys_Warn("floating point exception\n");
signal (SIGFPE, floating_point_exception_handler);
}
char *Sys_ConsoleInput (void)
{
static char text[256];
int len;
fd_set fdset;
struct timeval timeout;
if (cls.state == ca_dedicated)
{
FD_ZERO (&fdset);
FD_SET (0, &fdset); // stdin
timeout.tv_sec = 0;
timeout.tv_usec = 0;
if (select (1, &fdset, NULL, NULL, &timeout) == -1
|| !FD_ISSET (0, &fdset))
return NULL;
len = read (0, text, sizeof (text));
if (len < 1)
return NULL;
text[len - 1] = 0; // rip off the /n and terminate
return text;
}
return NULL;
}
#if !id386
void Sys_HighFPPrecision (void)
{
}
void Sys_LowFPPrecision (void)
{
}
#endif
// - DC - create user pref directory
#if defined (USERPREF_DIR)
char *Sys_InitUserDir(void)
{
char *home;
char *userdir;
struct stat stat_buf;
home = getenv("HOME");
if (!home){
Sys_Error("Environment variable HOME not found.\n");
}
userdir = (char *)malloc(strlen(home)+strlen(prefdir)+1);
strcpy(userdir,home);
if (home[strlen(home)-1]!='/')
strcat(userdir,"/");
if (stat(userdir,&stat_buf)){
Sys_Error("could not stat %s\n",userdir);
}
strcat(userdir,prefdir);
if (stat(userdir,&stat_buf)){
if (errno == ENOENT)
Sys_mkdir(userdir);
else
Sys_Error("error while stating %s\n",userdir);
}
if (!S_ISDIR(stat_buf.st_mode))
Sys_Error("%s is not a directory\n",userdir);
return userdir;
}
#endif
int main (int c, char **v)
{
double time, oldtime, newtime;
quakeparms_t parms;
extern int vcrFile;
extern int recording;
int j;
int mb_mem_size=50;
static char *home;
struct stat stat_buf;
// signal(SIGFPE, floating_point_exception_handler);
signal (SIGFPE, SIG_IGN);
memset (&parms, 0, sizeof (parms));
COM_InitArgv (c, v);
parms.argc = com_argc;
parms.argv = com_argv;
j = COM_CheckParm ("-heapsize");
if (j)
mb_mem_size =
(int) (Q_atof (com_argv[j + 1]));
parms.memsize = mb_mem_size*1024*1024;
parms.membase = malloc (parms.memsize);
// not enough memory !!
if (!parms.membase){
Sys_Error("Not enough memory - asked for %d - change with -heapsize <value in Mb> \n",mb_mem_size);
}
#if defined (USERPREF_DIR)
parms.userdir = Sys_InitUserDir ();
#endif
parms.basedir = basedir;
// caching is disabled by default, use -cachedir to enable
//parms.cachedir = "";
fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
Sys_Init ();
Host_Init (&parms);
if (COM_CheckParm ("-nostdout"))
nostdout = 1;
else
{
fcntl (0, F_SETFL, fcntl (0, F_GETFL, 0) | FNDELAY);
printf ("Linux Quake -- Version %0.3f -- basedir = %s\n", LINUX_VERSION,basedir);
}
oldtime = Sys_FloatTime () - 0.1;
while (1)
{
// find time spent rendering last frame
newtime = Sys_FloatTime ();
time = newtime - oldtime;
if (cls.state == ca_dedicated)
{ // play vcrfiles at max speed
if (time < sys_ticrate.value
&& (vcrFile == -1 || recording))
{
usleep (1);
continue; // not time to run a server only tic yet
}
time = sys_ticrate.value;
}
if (time > sys_ticrate.value * 2)
oldtime = newtime;
else
oldtime += time;
Host_Frame (time);
// graphic debugging aids
if (sys_linerefresh.value)
Sys_LineRefresh ();
}
}
/*
================
Sys_MakeCodeWriteable
================
*/
void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
{
int r;
unsigned long addr;
int psize = getpagesize ();
addr = (startaddr & ~(psize - 1)) - psize;
// fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
// addr, startaddr+length, length);
r = mprotect ((char *) addr, length + startaddr - addr + psize, 7);
if (r < 0)
Sys_Error ("Protection change failed\n");
}
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