static void execute(char *first, char *rest)
{
/*
* This command (in first) was not found in the command table
*
*
* first - first word on command line
* rest - rest of command line
*
*/
char *fullname;
assert(first);
assert(rest);
/* check for a drive change */
if ((strcmp(first + 1, ":") == 0) && isalpha(*first))
{
changeDrive(*first);
return;
}
if (strchr(first,'?') || strchr(first,'*'))
{
error_bad_command();
return;
}
/* search through %PATH% for the binary */
errno = 0;
fullname = find_which(first);
dprintf(("[find_which(%s) returned %s]\n", first, fullname));
if (!fullname)
{
error_bad_command();
return;
}
/* check if this is a .BAT file */
assert(strrchr(fullname, '.'));
if (stricmp(strrchr(fullname, '.'), ".bat") == 0)
{
dprintf(("[BATCH: %s %s]\n", fullname, rest));
batch(fullname, first, rest);
}
else
/* exec the program */
{
int result;
dprintf(("[EXEC: %s %s]\n", fullname, rest));
if (strlen(rest) > MAX_EXTERNAL_COMMAND_SIZE)
{
error_line_too_long();
return;
}
/* Prepare to call an external program */
/* Unload the message block if not loaded persistently */
if(!persistentMSGs)
unloadMsgs();
/* Execute the external program */
#ifdef FEATURE_KERNEL_SWAP_SHELL
if(swapOnExec == TRUE
&& kswapMkStruc(fullname, rest)) {
/* The Criter and ^Break handlers has been installed within
the PSP in kswapRegister() --> nothing to do here */
dprintf(("[EXEC: exiting to kernel swap support]\n"));
exit(123); /* Let the kernel swap support do the rest */
}
#ifdef DEBUG
if(swapOnExec == TRUE)
dprintf(("KSWAP: failed to save context, proceed without swapping\n"));
#endif
#endif
/* Install the dummy (always abort) handler */
setvect(0x23, (void interrupt(*)()) kswapContext->cbreak_hdlr);
result = exec(fullname, rest, 0);
setvect(0x23, cbreak_handler); /* Install local CBreak handler */
perform_exec_result(result);
}
}
int cd_dir(char *param, int cdd, const char * const fctname)
{ char **argv, *dir;
int argc, opts;
int rv, freeDir;
if((argv = scanCmdline(param, 0, 0, &argc, &opts)) == 0)
return 1;
freeDir = 0;
rv = 1;
/* if doing a CD and no parameters given, print out current directory */
if(argc == 0) {
if((dir = cwd(0)) != 0) {
puts(dir);
freeDir = 1;
goto okRet;
}
goto errRet;
} else if(argc != 1) {
error_syntax(0);
goto errRet;
}
else {
assert(argv[0]);
#ifdef FEATURE_CDD_FNAME
/* if path refers to an existing file and not directory, ignore filename portion */
if (cdd && (dfnstat(argv[0]) & DFN_FILE))
{
dir = strrchr(argv[0], '\\');
if (dir == NULL)
{
dir = argv[0];
if (dir[1] == ':') dir[2]='\0'; /* change drive only, no path */
else goto okRet; /* no drive, no path, so exit early */
}
else /* includes a path or refers to root dir */
{
*(dir+1) = '\0';
}
}
#endif
dir = strchr(argv[0], '\0');
/* take off trailing \ if any, but ONLY if dir is not the root dir */
while(dir > &argv[0][1] && *--dir == '\\' && dir[-1] != ':')
*dir = '\0';
dir = argv[0];
#ifdef FEATURE_LAST_DIR
if(strcmp(dir, "-") == 0) {
assert(!freeDir);
/* change to last directory */
lastDirGet(&dir);
freeDir = 1;
}
lastDirSet();
if(!dir) /* "CD -" without a CD before at all */
goto okRet;
#endif
if(*dir && dir[1] == ':') {
if(cdd) {
if(changeDrive(*dir) != 0)
goto errRet;
if(!dir[2]) /* only change drive */
goto okRet;
} else if(!dir[2]) { /* Real CHDIR displays CWD of
specified drive */
assert(freeDir == 0);
if((dir = cwd(*dir)) != 0) {
puts(dir);
freeDir = 1;
goto okRet;
}
goto errRet;
}
}
dprintf(("%s: '%s'\n", fctname, dir));
if(chdir(dir) != 0) {
error_dirfct_failed(fctname, dir);
goto errRet;
}
}
okRet:
rv = 0;
errRet:
freep(argv);
if(freeDir)
free(dir);
return rv;
}
static void execute(char *first, char *rest)
{
/*
* This command (in first) was not found in the command table
*
*
* first - first word on command line
* rest - rest of command line
*
*/
char *fullname;
char *extension;
assert(first);
assert(rest);
/* check for a drive change */
if ((strcmp(first + 1, ":") == 0) && isalpha(*first))
{
changeDrive(*first);
return;
}
if(strchr(first,'?') || strchr(first,'*')) {
error_bad_command(first);
return;
}
/* search through %PATH% for the binary */
errno = 0;
fullname = find_which(first);
dprintf(("[find_which(%s) returned %s]\n", first, fullname));
if(!fullname) {
error_bad_command(first);
return;
}
/* check if this is a .BAT file */
extension = strrchr(dfnfilename(fullname), '.');
assert(extension);
if(stricmp(extension, ".bat") == 0) {
dprintf(("[BATCH: %s %s]\n", fullname, rest));
batch(fullname, first, rest);
} else if(stricmp(extension, ".exe") == 0
|| stricmp(extension, ".com") == 0) {
/* exec the program */
int result;
dprintf(("[EXEC: %s %s]\n", fullname, rest));
if(strlen(rest) > MAX_EXTERNAL_COMMAND_SIZE) {
char *fullcommandline = malloc( strlen( first ) + strlen( rest ) + 2 );
error_line_too_long();
if( fullcommandline == NULL ) return;
sprintf( fullcommandline, "%s%s", first, rest );
if( chgEnv( "CMDLINE", fullcommandline ) != 0 ) {
free( fullcommandline );
return;
}
free( fullcommandline );
}
/* Prepare to call an external program */
/* Unload the message block if not loaded persistently */
if(!persistentMSGs)
unloadMsgs();
/* Execute the external program */
#ifdef FEATURE_KERNEL_SWAP_SHELL
if(swapOnExec == TRUE
&& kswapMkStruc(fullname, rest)) {
/* The Criter and ^Break handlers has been installed within
the PSP in kswapRegister() --> nothing to do here */
dprintf(("[EXEC: exiting to kernel swap support]\n"));
exit(123); /* Let the kernel swap support do the rest */
}
#ifdef DEBUG
if(swapOnExec == TRUE)
dprintf(("KSWAP: failed to save context, proceed without swapping\n"));
#endif
#endif
/* Install the dummy (always abort) handler */
#ifdef FEATURE_XMS_SWAP
set_isr(0x23, (void interrupt(*)())
MK_FP(FP_SEG(lowlevel_cbreak_handler)-0x10,
FP_OFF(lowlevel_cbreak_handler)+0x100));
/*
* some tools expect this interrupt to have the same segment as the
* command.com PSP, but FreeCOM is an exe...
*/
#else
set_isr(0x23, (void interrupt(*)()) kswapContext->cbreak_hdlr);
#endif
#ifdef FEATURE_XMS_SWAP
{
isr v;
get_isr(0x2e, v);
if( *(unsigned char far *)v == 0xCF && !canexit) /* IRET? */
set_isr( 0x2E, ( void interrupt(*)() )
MK_FP(FP_SEG(lowlevel_int_2e_handler)-0x10,
FP_OFF(lowlevel_int_2e_handler)+0x100));
}
#endif
result = exec(fullname, rest, 0);
set_isrfct(0x23, cbreak_handler); /* Install local CBreak handler */
/* The external command might has killed the string area. */
env_nullStrings(0);
setErrorLevel(result);
} else
error_bad_command(first);
chgEnv( "CMDLINE", NULL );
}
/*
* dir_print_header
*
* print the header for the dir command
*/
int dir_print_header(int drive)
{
/* one byte alignment */
#pragma -a-
struct media_id
{
int info_level;
int serial1;
int serial2;
char vol_id[11];
char file_sys[8];
}
media;
/* standard alignment */
#pragma -a.
struct ffblk f;
struct SREGS s;
union REGS r;
int currDisk;
int rv;
if (cbreak)
return E_CBreak;
if (optB)
return 0;
currDisk = getdisk();
if(changeDrive(drive+1) != 0) {
setdisk(currDisk);
return 1;
}
/* get the media ID of the drive */
/*
Format of disk info:
Offset Size Description (Table 01766)
00h WORD 0000h (info level)
02h DWORD disk serial number (binary)
06h 11 BYTEs volume label or "NO NAME " if none present
11h 8 BYTEs (AL=00h only) filesystem type (see #01767)
*/
r.x.ax = 0x6900;
r.x.bx = drive + 1;
s.ds = FP_SEG(&media);
r.x.dx = FP_OFF(&media);
int86x(0x21, &r, &r, &s);
/* print drive info */
printf("\n Volume in drive %c", drive + 'A');
if (FINDFIRST("\\*.*", &f, FA_LABEL) == 0)
{
/* Added to remove "." from labels which are longer than
8 characters (as DOS does). */
char *dotptr = strchr(f.ff_name, '.');
if (dotptr != NULL)
if(strlen(dotptr + 1))
memmove(dotptr, dotptr + 1, strlen(dotptr));
else *dotptr = '\0'; /* dot at end of name */
printf(" is %s\n", f.ff_name);
}
else
{
printf(" has no label\n");
}
setdisk(currDisk);
if ((rv = incline()) == 0) {
/* print the volume serial number if the return was successful */
if (!r.x.cflag)
{
printf(" Volume Serial Number is %04X-%04X\n", media.serial2, media.serial1);
rv = incline();
}
}
/* Added to exactly match DOS's formatting. */
if ( (optS) && (rv == 0) ) {
printf("\n");
rv = incline();
}
return rv;
}
/*
* dir_print_header
*
* print the header for the dir command
*/
int dir_print_header(int drive)
{
#pragma -a-
struct media_id
{
int info_level;
int serial1;
int serial2;
char vol_id[11];
char file_sys[8];
}
media;
#pragma -a.
struct REGPACK r;
struct ffblk f;
int disk;
int rv;
if (cbreak)
return E_CBreak;
if (optB)
return 0;
disk = getdisk();
if(changeDrive(drive + 1) != 0)
return 1;
/* get the media ID of the drive */
/*
Format of disk info:
Offset Size Description (Table 01766)
00h WORD 0000h (info level)
02h DWORD disk serial number (binary)
06h 11 BYTEs volume label or "NO NAME " if none present
11h 8 BYTEs (AL=00h only) filesystem type (see #01767)
*/
r.r_ax = 0x6900;
r.r_bx = 0;
r.r_ds = FP_SEG(&media);
r.r_dx = FP_OFF(&media);
intr(0x21, &r);
/* print drive info */
printf("\n Volume in drive %c", drive + 'A');
if (FINDFIRST("\\*.*", &f, FA_LABEL) == 0)
{
printf(" is %s\n", f.ff_name);
}
else
{
printf(" has no label\n");
}
setdisk(disk);
if ((rv = incline()) == 0) {
/* print the volume serial number if the return was successful */
if (!r.r_flags & 1)
{
printf(" Volume Serial Number is %04X-%04X\n"
, media.serial2, media.serial1);
rv = incline();
}
}
return rv;
}
static void execute(char *first, char *rest)
{
/*
* This command (in first) was not found in the command table
*
*
* first - first word on command line
* rest - rest of command line
*
*/
char *fullname;
assert(first);
assert(rest);
if (strlen(first) + strlen(rest) + 1 > MAX_EXTERNAL_COMMAND_SIZE)
{
error_line_too_long();
return;
}
/* check for a drive change */
if ((strcmp(first + 1, ":") == 0) && isalpha(*first))
{
changeDrive(*first);
return;
}
if (strchr(first,'?') || strchr(first,'*'))
{
error_bad_command();
return;
}
/* search through %PATH% for the binary */
fullname = find_which(first);
dprintf(("[find_which(%s) returned %s]\n", first, fullname));
if (!fullname)
{
error_bad_command();
return;
}
/* check if this is a .BAT file */
assert(strrchr(fullname, '.'));
if (stricmp(strrchr(fullname, '.'), ".bat") == 0)
{
dprintf(("[BATCH: %s %s]\n", fullname, rest));
batch(fullname, first, rest);
}
else
/* exec the program */
{
int result;
dprintf(("[EXEC: %s %s]\n", fullname, rest));
if(!saveSession()) {
error_save_session();
exit_all_batch();
return; /* Don't invoke the program in this case */
}
#ifdef FEATURE_KERNEL_SWAP_SHELL
if(swapOnExec == TRUE
&& kswapMkStruc(fullname, rest)) {
dprintf(("[EXEC: exiting to kernel swap support]\n"));
exit(123); /* Let the kernel swap support do the rest */
}
#ifdef DEBUG
if(swapOnExec == TRUE)
dprintf(("KSWAP: failed to save context, proceed without swapping\n"));
#endif
#endif
result = exec(fullname, rest, 0);
perform_exec_result(result);
}
}