Source to 321/linux/q_shlinux.c
/*
Copyright (C) 1997-2001 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdio.h>
#include <dirent.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/time.h>
#include "../linux/glob.h"
#include "../qcommon/qcommon.h"
//===============================================================================
byte *membase;
int maxhunksize;
int curhunksize;
void *Hunk_Begin (int maxsize)
{
// reserve a huge chunk of memory, but don't commit any yet
maxhunksize = maxsize + sizeof(int);
curhunksize = 0;
membase = mmap(0, maxhunksize, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
if (membase == NULL || membase == (byte *)-1)
Sys_Error("unable to virtual allocate %d bytes", maxsize);
*((int *)membase) = curhunksize;
return membase + sizeof(int);
}
void *Hunk_Alloc (int size)
{
byte *buf;
// round to cacheline
size = (size+31)&~31;
if (curhunksize + size > maxhunksize)
Sys_Error("Hunk_Alloc overflow");
buf = membase + sizeof(int) + curhunksize;
curhunksize += size;
return buf;
}
int Hunk_End (void)
{
byte *n;
n = mremap(membase, maxhunksize, curhunksize + sizeof(int), 0);
if (n != membase)
Sys_Error("Hunk_End: Could not remap virtual block (%d)", errno);
*((int *)membase) = curhunksize + sizeof(int);
return curhunksize;
}
void Hunk_Free (void *base)
{
byte *m;
if (base) {
m = ((byte *)base) - sizeof(int);
if (munmap(m, *((int *)m)))
Sys_Error("Hunk_Free: munmap failed (%d)", errno);
}
}
//===============================================================================
/*
================
Sys_Milliseconds
================
*/
int curtime;
int Sys_Milliseconds (void)
{
struct timeval tp;
struct timezone tzp;
static int secbase;
gettimeofday(&tp, &tzp);
if (!secbase)
{
secbase = tp.tv_sec;
return tp.tv_usec/1000;
}
curtime = (tp.tv_sec - secbase)*1000 + tp.tv_usec/1000;
return curtime;
}
void Sys_Mkdir (char *path)
{
mkdir (path, 0777);
}
char *strlwr (char *s)
{
while (*s) {
*s = tolower(*s);
s++;
}
}
//============================================
static char findbase[MAX_OSPATH];
static char findpath[MAX_OSPATH];
static char findpattern[MAX_OSPATH];
static DIR *fdir;
static qboolean CompareAttributes(char *path, char *name,
unsigned musthave, unsigned canthave )
{
struct stat st;
char fn[MAX_OSPATH];
// . and .. never match
if (strcmp(name, ".") == 0 || strcmp(name, "..") == 0)
return false;
return true;
if (stat(fn, &st) == -1)
return false; // shouldn't happen
if ( ( st.st_mode & S_IFDIR ) && ( canthave & SFF_SUBDIR ) )
return false;
if ( ( musthave & SFF_SUBDIR ) && !( st.st_mode & S_IFDIR ) )
return false;
return true;
}
char *Sys_FindFirst (char *path, unsigned musthave, unsigned canhave)
{
struct dirent *d;
char *p;
if (fdir)
Sys_Error ("Sys_BeginFind without close");
// COM_FilePath (path, findbase);
strcpy(findbase, path);
if ((p = strrchr(findbase, '/')) != NULL) {
*p = 0;
strcpy(findpattern, p + 1);
} else
strcpy(findpattern, "*");
if (strcmp(findpattern, "*.*") == 0)
strcpy(findpattern, "*");
if ((fdir = opendir(findbase)) == NULL)
return NULL;
while ((d = readdir(fdir)) != NULL) {
if (!*findpattern || glob_match(findpattern, d->d_name)) {
// if (*findpattern)
// printf("%s matched %s\n", findpattern, d->d_name);
if (CompareAttributes(findbase, d->d_name, musthave, canhave)) {
sprintf (findpath, "%s/%s", findbase, d->d_name);
return findpath;
}
}
}
return NULL;
}
char *Sys_FindNext (unsigned musthave, unsigned canhave)
{
struct dirent *d;
if (fdir == NULL)
return NULL;
while ((d = readdir(fdir)) != NULL) {
if (!*findpattern || glob_match(findpattern, d->d_name)) {
// if (*findpattern)
// printf("%s matched %s\n", findpattern, d->d_name);
if (CompareAttributes(findbase, d->d_name, musthave, canhave)) {
sprintf (findpath, "%s/%s", findbase, d->d_name);
return findpath;
}
}
}
return NULL;
}
void Sys_FindClose (void)
{
if (fdir != NULL)
closedir(fdir);
fdir = NULL;
}
//============================================