ref: e5c7fe6305977d4135d56d2fa6b5b37c8f275679
parent: ecd0d966e31167839f7c7754fb9191da6f31fedc
author: qwx <qwx@sciops.net>
date: Wed Aug 9 19:01:21 EDT 2023
games/doom: use wadfs to expose genmidi lump instead of extracting to /tmp to allow using games/dmid + games/opl3 for music playback, the genmidi lump must be exposed; previous attempt was insufficient since patch wads can overwrite iwad contents, which a single wadfs cannot take into account (commit e7b1c1aad896c131fb30b6b0836ff65a63a6eae3). subsequent fix was to use the normal mechanisms to extract the lump to /tmp and later the music lumps for playback, but the temp file may not always be properly cleaned up, preventing any music playback due to conflicts. so, spawn one wadfs for the iwad and one for each subsequently added pwad, just making sure that they have sufficient delay to properly initialize and bind in the right order
--- a/rc/bin/dmus
+++ b/rc/bin/dmus
@@ -1,6 +1,6 @@
#!/bin/rc
-if(test -f /tmp/genmidi.*)
- c=(games/dmid -i /tmp/genmidi.* '|' games/opl3)
+if(test -f /mnt/wad/genmidi)
+ c=(games/dmid '|' games/opl3)
if not
c=(games/midi -c)
if(~ `{file -m $1} audio/mus)
--- a/sys/src/games/doom/d_main.c
+++ b/sys/src/games/doom/d_main.c
@@ -539,16 +539,34 @@
//
void D_AddFile (char *file)
{
+ int n, ext;
int numwadfiles;
- char *newfile;
+ char *newfile, mnt[16];
- for (numwadfiles = 0 ; wadfiles[numwadfiles] ; numwadfiles++)
- ;
+ for(numwadfiles=0; wadfiles[numwadfiles]; numwadfiles++)
+ ;
- newfile = malloc (strlen(file)+1);
- strcpy (newfile, file);
-
+ ext = cistrstr(file, ".wad") != nil || cistrstr(file, ".lmp") != nil;
+ n = strlen(file) + 1;
+ if(!ext)
+ n += 4;
+ if((newfile = malloc(n)) == NULL)
+ sysfatal("malloc: %r");
+ snprintf(newfile, n, "%s%s", file, ext ? "" : ".wad");
wadfiles[numwadfiles] = newfile;
+
+ /* all wads are piled on top of each other at /mnt/wad, iwad first;
+ * binds are deferred to later to leave enough time for each wadfs
+ * to properly initialize */
+ snprintf(mnt, sizeof mnt, "/mnt/wad%d", numwadfiles);
+ switch(rfork(RFPROC|RFFDG)){
+ case -1:
+ sysfatal("rfork: %r");
+ case 0:
+ close(2);
+ execl("/bin/games/wadfs", "wadfs", "-m", mnt, newfile, nil);
+ sysfatal("execl: %r");
+ }
}
@@ -722,9 +740,11 @@
//
void D_DoomMain (void)
{
- int p;
- char file[256];
+ int i, p;
+ char file[256], mnt[16];
+ rfork(RFNAMEG);
+
FindResponseFile ();
IdentifyVersion ();
@@ -1054,6 +1074,12 @@
autostart = true;
}
+ for(i=0; wadfiles[i]; i++){
+ snprintf(mnt, sizeof mnt, "/mnt/wad%d", i);
+ if(bind(mnt, "/mnt/wad", MBEFORE) < 0)
+ sysfatal("bind: %r");
+ }
+
p = M_CheckParm ("-playdemo");
if (p && p < myargc-1)
{
--- a/sys/src/games/doom/i_sound.c
+++ b/sys/src/games/doom/i_sound.c
@@ -463,14 +463,7 @@
dup(mpfd[1], 1);
for(n=3; n<20; n++) close(n);
close(0);
- snprint(name, sizeof(name), "/tmp/doom.%d", getpid());
- if(create(name, ORDWR|ORCLOSE, 0666) != 0)
- sysfatal("create: %r");
- n = W_LumpLength(m->lumpnum);
- if(write(0, m->data, n) != n)
- sysfatal("write: %r");
- if(seek(0, 0, 0) != 0)
- sysfatal("seek: %r");
+ snprint(name, sizeof(name), "/mnt/wad/d_%s", m->name);
if(bind("/fd/1", "/dev/audio", MREPL) == -1)
sysfatal("bind: %r");
while(loop && fork() > 0){
--- a/sys/src/games/doom/i_system.c
+++ b/sys/src/games/doom/i_system.c
@@ -7,6 +7,7 @@
#include "i_sound.h"
#include "i_video.h"
+#include "d_main.h"
#include "d_net.h"
#include "g_game.h"
#include "m_misc.h"