/* sys.c virtual filesystem functions Copyright (C) 1996-1997 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: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA $Id$ */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_LIMITS_H # include #endif #ifdef HAVE_IO_H # include #endif #ifdef HAVE_WINDOWS_H # include #endif #ifdef HAVE_SYS_MMAN_H # include #endif #include #include #include #include #include #include #include "QF/cvar.h" #include "QF/sys.h" #include "compat.h" static void Sys_StdPrintf (const char *fmt, va_list args); cvar_t *sys_nostdout; cvar_t *sys_extrasleep; cvar_t *sys_dead_sleep; cvar_t *sys_sleep; static sys_printf_t sys_printf_function = Sys_StdPrintf; /* The translation table between the graphical font and plain ASCII --KB */ const char sys_char_map[256] = { '\0', '#', '#', '#', '#', '.', '#', '#', '#', 9, 10, '#', ' ', 13, '.', '.', '[', ']', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '<', '=', '>', ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '<', '<', '=', '>', '#', '#', '.', '#', '#', '#', '#', ' ', '#', ' ', '>', '.', '.', '[', ']', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', '<', '=', '>', ' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', '<' }; #define MAXPRINTMSG 4096 void Sys_mkdir (const char *path) { #ifdef HAVE_MKDIR # ifdef _WIN32 if (mkdir (path) == 0) return; # else if (mkdir (path, 0777) == 0) return; # endif #else # ifdef HAVE__MKDIR if (_mkdir (path) == 0) return; # else # error do not know how to make directories # endif #endif if (errno != EEXIST) Sys_Error ("mkdir %s: %s", path, strerror (errno)); } int Sys_FileTime (const char *path) { #ifdef HAVE_ACCESS if (access (path, R_OK) == 0) return 0; #else # ifdef HAVE__ACCESS if (_access (path, R_OK) == 0) return 0; # else # error do not know how to check access # endif #endif return -1; } /* Sys_SetPrintf for want of a better name, but it sets the function pointer for the actual implementation of Sys_Printf. */ void Sys_SetPrintf (sys_printf_t func) { sys_printf_function = func; } static void Sys_StdPrintf (const char *fmt, va_list args) { char msg[MAXPRINTMSG]; unsigned char *p; if (sys_nostdout && sys_nostdout->int_val) return; vsnprintf (msg, sizeof (msg), fmt, args); /* translate to ASCII instead of printing [xx] --KB */ for (p = (unsigned char *) msg; *p; p++) putc (sys_char_map[*p], stdout); fflush (stdout); } void Sys_Printf (const char *fmt, ...) { va_list args; va_start (args, fmt); sys_printf_function (fmt, args); va_end (args); } double Sys_DoubleTime (void) { static qboolean first = true; #ifdef _WIN32 static DWORD starttime; DWORD now; now = timeGetTime (); if (first) { first = false; starttime = now; return 0.0; } if (now < starttime) // wrapped? return (now / 1000.0) + (LONG_MAX - starttime / 1000.0); if (now - starttime == 0) return 0.0; return (now - starttime) / 1000.0; #else struct timeval tp; struct timezone tzp; double now; static double start_time; gettimeofday (&tp, &tzp); now = tp.tv_sec + tp.tv_usec / 1e6; if (first) { first = false; start_time = now; } return now - start_time; #endif } void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length) { #ifdef _WIN32 DWORD flOldProtect; if (!VirtualProtect ((LPVOID) startaddr, length, PAGE_READWRITE, &flOldProtect)) Sys_Error ("Protection change failed\n"); #else # ifdef HAVE_MPROTECT 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"); # endif #endif } void Sys_Init_Cvars (void) { sys_nostdout = Cvar_Get ("sys_nostdout", "0", CVAR_NONE, NULL, "Set to disable std out"); sys_extrasleep = Cvar_Get ("sys_extrasleep", "0", CVAR_NONE, NULL, "Set to cause whatever amount delay in " "microseconds you want. Mostly " "useful to generate simulated bad " "connections."); sys_dead_sleep = Cvar_Get ("sys_dead_sleep", "1", CVAR_NONE, NULL, "When set, the server gets NO cpu if no " "clients are connected and there's no other " "activity. *MIGHT* cause problems with some " "mods."); sys_sleep = Cvar_Get ("sys_sleep", "8", CVAR_NONE, NULL, "Sleep how long " "in seconds between checking for connections. " "Minimum is 0, maximum is 13"); }