mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
873 lines
18 KiB
C
873 lines
18 KiB
C
/*
|
|
* Copyright (c) 1992, 1993, 1996
|
|
* Berkeley Software Design, Inc. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Berkeley Software
|
|
* Design, Inc.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* BSDI doscmd.c,v 2.3 1996/04/08 19:32:30 bostic Exp
|
|
*
|
|
* $Id: doscmd.c,v 1.3 1997/09/30 22:03:40 jlemon Exp $
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <pwd.h>
|
|
#include <signal.h>
|
|
#include <unistd.h>
|
|
|
|
#include <machine/param.h>
|
|
#include <machine/vmparam.h>
|
|
|
|
#include <sys/proc.h>
|
|
#include <machine/sysarch.h>
|
|
#include <machine/vm86.h>
|
|
|
|
#include "doscmd.h"
|
|
|
|
/* exports */
|
|
int capture_fd = -1;
|
|
int dead = 0;
|
|
int xmode = 0;
|
|
int booting = 0;
|
|
int raw_kbd = 0;
|
|
int timer_disable = 0;
|
|
struct timeval boot_time;
|
|
unsigned long *ivec = (unsigned long *)0;
|
|
|
|
u_long pending[256]; /* pending interrupts */
|
|
int n_pending;
|
|
|
|
#ifndef USE_VM86
|
|
#define PRB_V86_FORMAT 0x4242
|
|
|
|
struct vconnect_area vconnect_area = {
|
|
0, /* Interrupt state */
|
|
PRB_V86_FORMAT, /* Magic number */
|
|
{ 0, }, /* Pass through ints */
|
|
{ 0x00000000, 0x00000000 } /* Magic iret location */
|
|
};
|
|
#endif
|
|
|
|
/* local prototypes */
|
|
static void setup_boot(regcontext_t *REGS);
|
|
static void setup_command(int argc, char *argv[], regcontext_t *REGS);
|
|
static FILE *find_doscmdrc(void);
|
|
static int do_args(int argc, char *argv[]);
|
|
static void usage(void);
|
|
static int open_name(char *name, char *ext);
|
|
static void init_iomap(void);
|
|
|
|
/* Local option flags &c. */
|
|
static int zflag = 0;
|
|
|
|
/* DOS environment emulation */
|
|
static int ecnt = 0;
|
|
static char *envs[256];
|
|
|
|
/* Search path and command name */
|
|
static char *dos_path = 0;
|
|
char cmdname[256]; /* referenced from dos.c */
|
|
|
|
static struct i386_vm86_args vm86;
|
|
static struct vm86_init_args kargs;
|
|
|
|
/* lobotomise */
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
#ifndef USE_VM86
|
|
struct sigcontext sc;
|
|
#else
|
|
struct vm86_struct vm86s;
|
|
#define sc vm86s.substr.regs.vmsc
|
|
#endif
|
|
regcontext_t *REGS = (regcontext_t *)≻
|
|
int fd;
|
|
int i;
|
|
char buffer[4096];
|
|
FILE *fp;
|
|
|
|
|
|
/* XXX should only be for tty mode */
|
|
fd = open ("/dev/null", O_RDWR);
|
|
if (fd != 3)
|
|
dup2 (fd, 3); /* stdaux */
|
|
if (fd != 4)
|
|
dup2 (fd, 4); /* stdprt */
|
|
if (fd != 3 && fd != 4)
|
|
close (fd);
|
|
fd = -1;
|
|
|
|
debug_set(0); /* debug any D_TRAPS without intnum */
|
|
|
|
/* perform option argument processing */
|
|
optind = do_args(argc, argv);
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (vflag && debugf == stderr) {
|
|
debugf = stdout;
|
|
setbuf (stdout, NULL);
|
|
}
|
|
|
|
initHMA();
|
|
|
|
/* This needs to happen before the executable is loaded */
|
|
mem_init();
|
|
|
|
#ifdef USE_VM86
|
|
memset(&vm86s, 0, sizeof(vm86s));
|
|
#endif
|
|
|
|
/*
|
|
* With no other arguments we will assume we must boot DOS
|
|
*/
|
|
if (argc <= 0)
|
|
booting = 1;
|
|
|
|
#if 1
|
|
/*
|
|
* Nominate interrupts to handle here when the kernel is
|
|
* performing interrupt handling.
|
|
*
|
|
* I would like to let INT 2F pass through as well, but I
|
|
* need to get my hands on INT 2F:11 to do file redirection.
|
|
*/
|
|
for (i = 0; i <= 0xff; ++i) {
|
|
switch (i) {
|
|
case 0x2f:
|
|
case 0xff:
|
|
#if 1
|
|
kargs.int_map[i >> 3] |= (1 << (i & 7));
|
|
#ifndef USE_VM86
|
|
vconnect_area.passthru[i >> 5] &= ~(1 << (i & 0x1f));
|
|
#else
|
|
vm86s.int_byuser[i >> 3] |= (1 << (i & 0x07));
|
|
#endif
|
|
#endif
|
|
break;
|
|
default:
|
|
#if 1
|
|
kargs.int_map[i >> 3] &= ~(1 << (i & 7));
|
|
#ifndef USE_VM86
|
|
vconnect_area.passthru[i >> 5] |= (1 << (i & 0x1f));
|
|
#else
|
|
vm86s.int_byuser[i >> 3] |= (1 << (i & 0x07));
|
|
#endif
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
for (i = 0; i < 256; i++)
|
|
pending[i] = 0;
|
|
n_pending = 0;
|
|
|
|
if (booting) { /* are we booting? */
|
|
setup_boot(REGS);
|
|
} else { /* no, load a command */
|
|
setup_command(argc, argv, REGS);
|
|
}
|
|
|
|
/* install signal handlers */
|
|
setsignal (SIGFPE, sigfpe); /* */
|
|
setsignal (SIGALRM, sigalrm); /* */
|
|
setsignal (SIGILL, sigill); /* */
|
|
setsignal (SIGTRAP, sigtrap); /* */
|
|
setsignal (SIGUSR2, sigtrace); /* */
|
|
setsignal (SIGINFO, sigtrace); /* */
|
|
#ifdef USE_VM86
|
|
setsignal (SIGURG, sigurg); /* entry from NetBSD vm86 */
|
|
#else
|
|
setsignal (SIGBUS, sigbus); /* entry from FreeBSD, BSD/OS vm86 */
|
|
#endif
|
|
|
|
/* Call init functions */
|
|
if (raw_kbd)
|
|
console_init();
|
|
init_io_port_handlers();
|
|
bios_init();
|
|
cpu_init();
|
|
video_init();
|
|
if (xmode)
|
|
mouse_init();
|
|
video_bios_init();
|
|
disk_bios_init();
|
|
cmos_init();
|
|
xms_init();
|
|
dos_init();
|
|
net_init();
|
|
speaker_init();
|
|
timer_init();
|
|
/* iomap_init(); */
|
|
|
|
gettimeofday(&boot_time, 0);
|
|
|
|
if (zflag) for (;;) pause(); /* spin if requested */
|
|
|
|
if (raw_kbd) {
|
|
/*
|
|
* If we have a raw keyboard, and hence, video,
|
|
* sneak in a call to the video BIOS to reinit the
|
|
* the video display.
|
|
*/
|
|
u_long video_vector;
|
|
static u_char video_trampoline[] = {
|
|
0x60, /* pusha */
|
|
0xB8, 0x03, 0x00, /* mov ax,00003h */
|
|
0xCD, 0x10, /* int 010h */
|
|
0x61, /* popa */
|
|
0xCF, /* iret */
|
|
};
|
|
|
|
video_vector = insert_generic_trampoline(
|
|
sizeof(video_trampoline), video_trampoline);
|
|
|
|
N_PUSH(R_FLAGS, REGS);
|
|
N_PUSH(R_CS, REGS);
|
|
N_PUSH(R_IP, REGS);
|
|
N_PUTVEC(R_CS, R_IP, video_vector);
|
|
}
|
|
|
|
sigemptyset(&sc.sc_mask);
|
|
sc.sc_onstack = 0;
|
|
|
|
if (tmode)
|
|
tracetrap(REGS);
|
|
|
|
#ifndef USE_VM86
|
|
R_EAX = (booting || raw_kbd) ? (int)&vconnect_area : -1;
|
|
R_EFLAGS |= PSL_VM | PSL_VIF; /* request VM86 mode */
|
|
|
|
vm86.sub_op = VM86_INIT;
|
|
vm86.sub_args = (char *)&kargs;
|
|
i = sysarch(I386_VM86, &vm86);
|
|
printf("Init: %d\n", i);
|
|
|
|
sigreturn(&sc);
|
|
debug(D_ALWAYS,"sigreturn failed : %s\n", strerror(errno));
|
|
#else
|
|
vm86s.cpu_type = VCPU_586;
|
|
i386_vm86(&vm86s);
|
|
#endif
|
|
|
|
/* shouldn't get here */
|
|
if (vflag) dump_regs((regcontext_t *)&sc);
|
|
fatal ("vm86 returned (no kernel support?)\n");
|
|
#undef sc
|
|
}
|
|
|
|
/*
|
|
** setup_boot
|
|
**
|
|
** Setup to boot DOS
|
|
*/
|
|
static void
|
|
setup_boot(regcontext_t *REGS)
|
|
{
|
|
FILE *fp; /* doscmdrc handle */
|
|
int fd; /* don't close this! */
|
|
|
|
fp = find_doscmdrc(); /* get doscmdrc */
|
|
if (!fp) {
|
|
fprintf(stderr, "You must have a doscmdrc to boot\n");
|
|
quit(1);
|
|
}
|
|
|
|
booting = read_config(fp); /* where to boot from? */
|
|
fclose(fp);
|
|
if (booting < 0) { /* not specified */
|
|
if ((fd = disk_fd(booting = 0)) < 0) /* try A: */
|
|
fd = disk_fd(booting = 2); /* try C: */
|
|
} else {
|
|
fd = disk_fd(booting); /* do like the man says */
|
|
}
|
|
|
|
if (fd < 0) { /* can we boot it? */
|
|
fprintf(stderr, "Cannot boot from %c: (can't open)\n",
|
|
booting + 'A');
|
|
quit(1);
|
|
}
|
|
|
|
/* read bootblock */
|
|
if (read(fd, (char *)0x7c00, 512) != 512) {
|
|
fprintf(stderr, "Short read on boot block from %c:\n",
|
|
booting + 'A');
|
|
quit(1);
|
|
}
|
|
|
|
/* initialise registers for entry to bootblock */
|
|
R_EFLAGS = 0x20202;
|
|
R_CS = 0x0000;
|
|
R_IP = 0x7c00;
|
|
R_SS = 0x9800;
|
|
R_SP = 0x8000 - 2;
|
|
R_DS = 0x0000;
|
|
R_ES = 0x0000;
|
|
|
|
R_AX = R_BX = R_CX = R_DX = R_SI = R_DI = R_BP = 0;
|
|
|
|
#if defined(__FreeBSD__) || defined(__NetBSD__)
|
|
/*
|
|
** init a few other context registers
|
|
*/
|
|
R_FS = 0x0000;
|
|
R_GS = 0x0000;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
** setup_command
|
|
**
|
|
** Setup to run a single command and emulate DOS
|
|
*/
|
|
static void
|
|
setup_command(int argc, char *argv[], regcontext_t *REGS)
|
|
{
|
|
FILE *fp;
|
|
u_short param[7] = {0, 0, 0, 0, 0, 0, 0};
|
|
char *p;
|
|
char prog[1024];
|
|
char buffer[PATH_MAX];
|
|
int i;
|
|
int fd;
|
|
|
|
fp = find_doscmdrc(); /* dig up a doscmdrc */
|
|
if (fp) {
|
|
read_config(fp); /* load config for non-boot mode */
|
|
fclose(fp);
|
|
}
|
|
|
|
if (argc <= 0) /* need some arguments */
|
|
usage();
|
|
|
|
/* look for a working directory XXX ??? */
|
|
if (dos_getcwd('C' - 'A') == NULL) {
|
|
|
|
/* try to get our current directory, use '/' if desperate */
|
|
p = getcwd(buffer, sizeof(buffer));
|
|
if (!p || !*p) p = getenv("PWD");
|
|
if (!p || !*p) p = "/";
|
|
init_path('C' - 'A', (u_char *)"/", (u_char *)p);
|
|
|
|
/* look for PATH= already set, learn from it if possible */
|
|
for (i = 0; i < ecnt; ++i) {
|
|
if (!strncmp(envs[i], "PATH=", 5)) {
|
|
dos_path = envs[i] + 5;
|
|
break;
|
|
}
|
|
}
|
|
/* no PATH in DOS environment? put current directory there*/
|
|
if (i >= ecnt) {
|
|
static char path[256];
|
|
sprintf(path, "PATH=C:%s",
|
|
dos_getcwd('C' - 'A'));
|
|
put_dosenv(path);
|
|
dos_path = envs[ecnt-1] + 5;
|
|
}
|
|
}
|
|
|
|
/* add a COMSPEC if required */
|
|
for (i = 0; i < ecnt; ++i) {
|
|
if (!strncmp(envs[i], "COMSPEC=", 8))
|
|
break;
|
|
}
|
|
if (i >= ecnt)
|
|
put_dosenv("COMSPEC=C:\\COMMAND.COM");
|
|
|
|
/* look for PATH already set, learn from it if possible */
|
|
for (i = 0; i < ecnt; ++i) {
|
|
if (!strncmp(envs[i], "PATH=", 5)) {
|
|
dos_path = envs[i] + 5;
|
|
break;
|
|
}
|
|
}
|
|
/* No PATH, default to c:\ */
|
|
if (i >= ecnt) {
|
|
dos_path = envs[ecnt-1] + 5;
|
|
put_dosenv("PATH=C:\\");
|
|
}
|
|
|
|
/* if no PROMPT, default to 'DOS>' */
|
|
for (i = 0; i < ecnt; ++i) {
|
|
if (!strncmp(envs[i], "PROMPT=", 7))
|
|
break;
|
|
}
|
|
if (i >= ecnt)
|
|
put_dosenv("PROMPT=DOS> ");
|
|
|
|
/* terminate environment */
|
|
envs[ecnt] = 0;
|
|
|
|
/* XXX ??? */
|
|
if (dos_getcwd('R' - 'A') == NULL)
|
|
init_path('R' - 'A', (u_char *)"/", 0);
|
|
|
|
/* get program name */
|
|
strncpy(prog, *argv++, sizeof(prog) -1);
|
|
prog[sizeof(prog) -1] = '\0';
|
|
|
|
/* try to open program */
|
|
if ((fd = open_prog(prog)) < 0) {
|
|
fprintf (stderr, "%s: command not found\n", prog);
|
|
quit(1);
|
|
}
|
|
|
|
/* load program */
|
|
load_command(REGS, 1, fd, cmdname, param, argv, envs);
|
|
close(fd);
|
|
}
|
|
|
|
/*
|
|
** find_doscmdrc
|
|
**
|
|
** Try to find a doscmdrc file
|
|
*/
|
|
static FILE *
|
|
find_doscmdrc(void)
|
|
{
|
|
FILE *fp;
|
|
char buffer[4096];
|
|
int fd;
|
|
|
|
if ((fp = fopen(".doscmdrc", "r")) == NULL) {
|
|
struct passwd *pwd = getpwuid(geteuid());
|
|
if (pwd) {
|
|
sprintf(buffer, "%s/.doscmdrc", pwd->pw_dir);
|
|
fp = fopen(buffer, "r");
|
|
}
|
|
if (!fp) {
|
|
char *home = getenv("HOME");
|
|
if (home) {
|
|
sprintf(buffer, "%s/.doscmdrc", home);
|
|
fp = fopen(buffer, "r");
|
|
}
|
|
}
|
|
if (!fp)
|
|
fp = fopen("/etc/doscmdrc", "r");
|
|
}
|
|
return(fp);
|
|
}
|
|
|
|
/*
|
|
** do_args
|
|
**
|
|
** commandline argument processing
|
|
*/
|
|
static int
|
|
do_args(int argc, char *argv[])
|
|
{
|
|
int i,c,p;
|
|
FILE *fp;
|
|
char *col;
|
|
|
|
while ((c = getopt (argc, argv, "234Oc:TkCIEMPRLAU:S:HDtzvVxXYfbri:o:d:")) != -1) {
|
|
switch (c) {
|
|
case 'd':
|
|
if (fp = fopen(optarg, "w")) {
|
|
debugf = fp;
|
|
setbuf (fp, NULL);
|
|
} else
|
|
perror(optarg);
|
|
break;
|
|
case '2':
|
|
debug_flags |= D_TRAPS2;
|
|
break;
|
|
case '3':
|
|
debug_flags |= D_TRAPS3;
|
|
break;
|
|
case '4':
|
|
debug_flags |= D_DEBUGIN;
|
|
break;
|
|
case 'O':
|
|
debugf = stdout;
|
|
setbuf (stdout, NULL);
|
|
break;
|
|
case 'c':
|
|
if ((capture_fd = creat(optarg, 0666)) < 0) {
|
|
perror(optarg);
|
|
quit(1);
|
|
}
|
|
break;
|
|
case 'i':
|
|
i = 1;
|
|
if (col = strchr(optarg, ':')) {
|
|
*col++ = 0;
|
|
i = strtol(col, 0, 0);
|
|
}
|
|
p = strtol(optarg, 0, 0);
|
|
|
|
while (i-- > 0)
|
|
define_input_port_handler(p++, inb_traceport);
|
|
break;
|
|
case 'o':
|
|
i = 1;
|
|
if (col = strchr(optarg, ':')) {
|
|
*col++ = 0;
|
|
i = strtol(col, 0, 0);
|
|
}
|
|
p = strtol(optarg, 0, 0);
|
|
|
|
while (i-- > 0)
|
|
define_output_port_handler(p++, outb_traceport);
|
|
break;
|
|
|
|
case 'r':
|
|
raw_kbd = 1;
|
|
break;
|
|
case 'I':
|
|
debug_flags |= D_ITRAPS;
|
|
for (c = 0; c < 256; ++c)
|
|
debug_set(c);
|
|
break;
|
|
case 'k':
|
|
kargs.debug = 1;
|
|
break;
|
|
case 'T':
|
|
timer_disable = 1;
|
|
break;
|
|
case 'E':
|
|
debug_flags |= D_EXEC;
|
|
break;
|
|
case 'C':
|
|
debug_flags |= D_DOSCALL;
|
|
break;
|
|
case 'M':
|
|
debug_flags |= D_MEMORY;
|
|
break;
|
|
case 'P':
|
|
debug_flags |= D_PORT;
|
|
break;
|
|
case 'R':
|
|
debug_flags |= D_REDIR;
|
|
break;
|
|
case 'X':
|
|
debug_flags |= D_XMS;
|
|
break;
|
|
case 'Y':
|
|
debug_flags |= D_EMS;
|
|
break;
|
|
case 'L':
|
|
debug_flags |= D_PRINTER;
|
|
break;
|
|
case 'A':
|
|
debug_flags |= D_TRAPS|D_ITRAPS;
|
|
for (c = 0; c < 256; ++c)
|
|
debug_set(c);
|
|
break;
|
|
case 'U':
|
|
debug_unset(strtol(optarg, 0, 0));
|
|
break;
|
|
case 'S':
|
|
debug_flags |= D_TRAPS|D_ITRAPS;
|
|
debug_set(strtol(optarg, 0, 0));
|
|
break;
|
|
case 'H':
|
|
debug_flags |= D_HALF;
|
|
break;
|
|
case 'x':
|
|
#ifdef NO_X
|
|
fatal("X11 support not compiled in.\n");
|
|
#endif
|
|
xmode = 1;
|
|
break;
|
|
case 't':
|
|
tmode = 1;
|
|
break;
|
|
case 'z':
|
|
zflag = 1;
|
|
break;
|
|
case 'D':
|
|
debug_flags |= D_DISK | D_FILE_OPS;
|
|
break;
|
|
case 'v':
|
|
debug_flags |= D_TRAPS | D_ITRAPS | D_HALF | 0xff;
|
|
break;
|
|
case 'V':
|
|
vflag = 1;
|
|
break;
|
|
case 'b':
|
|
booting = 1;
|
|
break;
|
|
default:
|
|
usage ();
|
|
}
|
|
}
|
|
return(optind);
|
|
}
|
|
|
|
/*
|
|
** Very helpful 8(
|
|
*/
|
|
void
|
|
usage (void)
|
|
{
|
|
fprintf (stderr, "usage: doscmd cmd args...\n");
|
|
quit (1);
|
|
}
|
|
|
|
/*
|
|
** look up a DOS command name
|
|
**
|
|
** XXX ordering is wrong!
|
|
*/
|
|
static int
|
|
open_name(char *name, char *ext)
|
|
{
|
|
int fd;
|
|
char *p = name + strlen(name);
|
|
char *q;
|
|
|
|
*ext = 0;
|
|
|
|
q = strrchr(name, '/');
|
|
if (q)
|
|
q++;
|
|
else
|
|
q = name;
|
|
|
|
if (!strchr(q, '.')) {
|
|
strcpy(ext, ".exe");
|
|
strcpy(p, ".exe");
|
|
|
|
if ((fd = open (name, O_RDONLY)) >= 0)
|
|
return (fd);
|
|
|
|
strcpy(ext, ".com");
|
|
strcpy(p, ".com");
|
|
|
|
if ((fd = open (name, O_RDONLY)) >= 0)
|
|
return (fd);
|
|
} else {
|
|
if ((fd = open (name, O_RDONLY)) >= 0)
|
|
return (fd);
|
|
}
|
|
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
** look up a DOS command, search the path as well.
|
|
*/
|
|
int
|
|
open_prog(char *name)
|
|
{
|
|
int fd;
|
|
char fullname[1024], tmppath[1024];
|
|
char *p;
|
|
char *e;
|
|
char ext[5];
|
|
int error;
|
|
int drive;
|
|
char *path;
|
|
|
|
if (strpbrk(name, ":/\\")) {
|
|
error = translate_filename(name, fullname, &drive);
|
|
if (error)
|
|
return (-1);
|
|
|
|
fd = open_name(fullname, ext);
|
|
|
|
strcpy(cmdname, name);
|
|
if (*ext)
|
|
strcat(cmdname, ext);
|
|
return (fd);
|
|
}
|
|
|
|
path = dos_path;
|
|
|
|
while (*path) {
|
|
p = path;
|
|
while (*p && *p != ';')
|
|
++p;
|
|
|
|
memcpy(tmppath, path, p - path);
|
|
e = tmppath + (p - path);
|
|
*e++ = '\\';
|
|
strcpy(e, name);
|
|
|
|
path = *p ? p + 1 : p;
|
|
|
|
error = translate_filename(tmppath, fullname, &drive);
|
|
if (error)
|
|
continue;
|
|
|
|
fd = open_name(fullname, ext);
|
|
|
|
if (fd >= 0) {
|
|
strcpy(cmdname, tmppath);
|
|
if (*ext)
|
|
strcat(cmdname, ext);
|
|
return (fd);
|
|
}
|
|
}
|
|
|
|
return (-1);
|
|
}
|
|
|
|
/*
|
|
** append a value to the DOS environment
|
|
*/
|
|
void
|
|
put_dosenv(char *value)
|
|
{
|
|
if (ecnt < sizeof(envs)/sizeof(envs[0])) {
|
|
if ((envs[ecnt++] = strdup(value)) == NULL) {
|
|
perror("put_dosenv");
|
|
quit(1);
|
|
}
|
|
} else {
|
|
fprintf(stderr, "Environment full, ignoring %s\n", value);
|
|
}
|
|
}
|
|
|
|
/*
|
|
** replicate a fd up at the top of the range
|
|
*/
|
|
int
|
|
squirrel_fd(int fd)
|
|
{
|
|
int sfd = sysconf(_SC_OPEN_MAX);
|
|
struct stat sb;
|
|
|
|
do {
|
|
errno = 0;
|
|
fstat(--sfd, &sb);
|
|
} while (sfd > 0 && errno != EBADF);
|
|
|
|
if (errno == EBADF && dup2(fd, sfd) >= 0) {
|
|
close(fd);
|
|
return(sfd);
|
|
}
|
|
return(fd);
|
|
}
|
|
|
|
/*
|
|
** Exit-time stuff
|
|
*/
|
|
|
|
/*
|
|
** Going away time
|
|
**
|
|
** XXX belongs somewhere else perhaps
|
|
*/
|
|
void
|
|
done (regcontext_t *REGS, int val)
|
|
{
|
|
if (curpsp < 2) {
|
|
if (xmode) {
|
|
char *m;
|
|
|
|
tty_move(24, 0);
|
|
for (m = "END OF PROGRAM"; *m; ++m)
|
|
tty_write(*m, 0x8400);
|
|
|
|
for (m = "(PRESS <CTRL-ALT> ANY MOUSE BUTTON TO exit)"; *m; ++m)
|
|
tty_write(*m, 0x0900);
|
|
tty_move(-1, -1);
|
|
for (;;)
|
|
tty_pause();
|
|
} else {
|
|
quit(val);
|
|
}
|
|
}
|
|
exec_return(REGS, val);
|
|
}
|
|
|
|
typedef struct COQ {
|
|
void (*func)();
|
|
void *arg;
|
|
struct COQ *next;
|
|
} COQ;
|
|
|
|
COQ *coq = 0;
|
|
|
|
void
|
|
quit(int status)
|
|
{
|
|
while (coq) {
|
|
COQ *c = coq;
|
|
coq = coq->next;
|
|
c->func(c->arg);
|
|
}
|
|
if (!xmode) /* XXX not for bootmode */
|
|
puts("\n");
|
|
exit(status);
|
|
}
|
|
|
|
void
|
|
call_on_quit(void (*func)(void *), void *arg)
|
|
{
|
|
COQ *c = (COQ *)malloc(sizeof(COQ));
|
|
if (!c) {
|
|
perror("call_on_quit");
|
|
quit(1);
|
|
}
|
|
c->func = func;
|
|
c->arg = arg;
|
|
c->next = coq;
|
|
coq = c;
|
|
}
|
|
|
|
struct i386_ioperm_args {
|
|
u_short start;
|
|
u_short length;
|
|
char disable;
|
|
};
|
|
|
|
struct sysarch_args {
|
|
int op;
|
|
char *parms;
|
|
};
|
|
|
|
static void
|
|
iomap_init(void)
|
|
{
|
|
int i;
|
|
struct i386_ioperm_args args[] = {
|
|
#if 0
|
|
{ 0x200, 0x200, 1 }, /* 0x200 - 0x400 */
|
|
{ 0x1c80, 2, 1 }, /* 0x1c80 - 0x1c81 */
|
|
{ 0x2c80, 2, 1 }, /* 0x2c80 - 0x2c81 */
|
|
{ 0x3c80, 2, 1 }, /* 0x3c80 - 0x3c81 */
|
|
{ 0x3c4, 2, 1 }, /* 0x3c4 - 0x3c5 */
|
|
{ 0x3c5, 2, 1 }, /* 0x3ce - 0x3cf */
|
|
#else
|
|
{ 0x0, 0xffff, 1 }, /* entire i/o space */
|
|
#endif
|
|
{ 0, 0, 0 }
|
|
};
|
|
|
|
for (i = 0; args[i].length; i++)
|
|
if (sysarch(I386_SET_IOPERM, &(args[i])) < 0)
|
|
err(1, "sysarch");
|
|
}
|