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- /*
- * This file is part of ixemul.library for the Amiga.
- * Copyright (C) 1991, 1992 Markus M. Wild
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- #define KERNEL
- #include "ixemul.h"
-
- #include <ctype.h>
-
- #define NO_PROTOTYPES
- #include <libraries/arpbase.h> /* HAS! to be V39 or higher! */
- #undef NO_PROTOTYPES
-
- #define BASE_EXT_DECL
- #define BASE_PAR_DECL
- #define BASE_PAR_DECL0
- #define BASE_NAME ix.ix_arp_base
- #include <inline/arp.h>
-
- /* 2.0 support */
- #include "gcc:include20/utility/tagitem.h"
- #include "gcc:include20/dos/dostags.h"
- #define BASE_EXT_DECL
- #define BASE_PAR_DECL
- #define BASE_PAR_DECL0
- #define BASE_NAME ix.ix_dos_base
- __inline static LONG SystemTagList(BASE_PAR_DECL UBYTE* command, struct TagItem* tags)
- {
- BASE_EXT_DECL
- register LONG res __asm("d0");
- register void *a6 __asm ("a6");
- register UBYTE* d1 __asm("d1");
- register struct TagItem* d2 __asm("d2");
-
- a6 = BASE_NAME;
- d1 = command;
- d2 = tags;
- __asm volatile ("
- jsr a6@(-0x25e)"
- : "=r" (res)
- : "r" (a6), "r" (d1), "r" (d2)
- : "d0", "d1", "a0", "a1", "d2");
- return res;
- }
-
-
- extern int _dos20;
- #define alloca __builtin_alloca
-
- int
- system (const char *cmd)
- {
- int rc, err = 0;
- int stack_size;
- struct CommandLineInterface *CLI;
- struct Process *me;
- int omask;
-
- /* I retry with our new signal mechanism ;-) */
- omask = syscall (SYS_sigsetmask, ~0);
-
- me = (struct Process *)FindTask(0);
- CLI = BTOCPTR (me->pr_CLI);
- stack_size = CLI ? CLI->cli_DefaultStack * 4 : me->pr_StackSize;
- if (stack_size <= 4096) stack_size = 250000;
-
- /* limited support to allow starting of files in the current directory
- * with `./foo'. The better approach would use the __plock() trick to
- * parse the command, LoadSeg it. But then this approach would have to
- * do the whole redirection stuff on its own.. */
- while (isspace (*cmd)) cmd++;
- while (cmd[0] == '.' && cmd[1] == '/') cmd += 2;
-
- /* before OS2.0, use ARP functions */
- if (! _dos20)
- {
- struct NewShell *nsh; /* only available starting with Arp1.3 !! */
-
- nsh = alloca (sizeof (*nsh));
- bzero (nsh, sizeof (*nsh));
-
- /* use same stacksize as parent process */
- nsh->nsh_StackSize = stack_size;
- nsh->nsh_Control = EXECUTE_ME; /* BACKGROUND | EXECUTE */
-
- /* rc should be 0 if the generated pid was >= 0 */
- rc = ASyncRun ((UBYTE *)cmd, 0L, nsh) < 0;
- err = __ioerr_to_errno (IoErr ());
- }
- else
- {
- struct TagItem tags [] = {
- /* a stack of 4K is generally ways too small.. */
- { NP_StackSize, stack_size, },
- { TAG_END, 0, }
- };
-
- rc = SystemTagList ((UBYTE *)cmd, tags);
- err = __ioerr_to_errno (IoErr ());
- }
-
- syscall (SYS_sigsetmask, omask);
-
- if (rc > 128)
- errno = EINTR;
- else
- errno = err;
-
- return rc;
- }
-