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- /* $RCSfile: os2.c,v $$Revision: 4.0.1.1 $$Date: 91/06/07 11:23:06 $
- *
- * (C) Copyright 1989, 1990 Diomidis Spinellis.
- *
- * You may distribute under the terms of either the GNU General Public
- * License or the Artistic License, as specified in the README file.
- *
- * $Log: os2.c,v $
- * Revision 4.0.1.1 91/06/07 11:23:06 lwall
- * patch4: new copyright notice
- *
- * Revision 4.0 91/03/20 01:36:21 lwall
- * 4.0 baseline.
- *
- * Revision 3.0.1.2 90/11/10 01:42:38 lwall
- * patch38: more msdos/os2 upgrades
- *
- * Revision 3.0.1.1 90/10/15 17:49:55 lwall
- * patch29: Initial revision
- *
- * Revision 3.0.1.1 90/03/27 16:10:41 lwall
- * patch16: MSDOS support
- *
- * Revision 1.1 90/03/18 20:32:01 dds
- * Initial revision
- *
- */
-
- #define INCL_DOS
- #define INCL_NOPM
- #include <os2.h>
-
- /*
- * Various Unix compatibility functions for OS/2
- */
-
- #include <stdio.h>
- #include <errno.h>
- #include <process.h>
-
- #include "EXTERN.h"
- #include "perl.h"
-
-
- /* dummies */
-
- int ioctl(int handle, unsigned int function, char *data)
- { return -1; }
-
- int userinit()
- { return -1; }
-
- int syscall()
- { return -1; }
-
-
- /* extended chdir() */
-
- int chdir(char *path)
- {
- if ( path[0] != 0 && path[1] == ':' )
- if ( DosSelectDisk(toupper(path[0]) - '@') )
- return -1;
-
- return DosChDir(path, 0L);
- }
-
-
- /* priorities */
-
- int setpriority(int class, int pid, int val)
- {
- int flag = 0;
-
- if ( pid < 0 )
- {
- flag++;
- pid = -pid;
- }
-
- return DosSetPrty(flag ? PRTYS_PROCESSTREE : PRTYS_PROCESS, class, val, pid);
- }
-
- int getpriority(int which /* ignored */, int pid)
- {
- USHORT val;
-
- if ( DosGetPrty(PRTYS_PROCESS, &val, pid) )
- return -1;
- else
- return val;
- }
-
-
- /* get parent process id */
-
- int getppid(void)
- {
- PIDINFO pi;
-
- DosGetPID(&pi);
- return pi.pidParent;
- }
-
-
- /* wait for specific pid */
-
- int wait4pid(int pid, int *status, int flags)
- {
- RESULTCODES res;
- int endpid, rc;
-
- if ( DosCwait(DCWA_PROCESS, flags ? DCWW_NOWAIT : DCWW_WAIT,
- &res, &endpid, pid) )
- return -1;
-
- *status = res.codeResult;
- return endpid;
- }
-
-
- /* kill */
-
- int kill(int pid, int sig)
- {
- int flag = 0;
-
- if ( pid < 0 )
- {
- flag++;
- pid = -pid;
- }
-
- switch ( sig & 3 )
- {
-
- case 0:
- DosKillProcess(flag ? DKP_PROCESSTREE : DKP_PROCESS, pid);
- break;
-
- case 1: /* FLAG A */
- DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_A, 0);
- break;
-
- case 2: /* FLAG B */
- DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_B, 0);
- break;
-
- case 3: /* FLAG C */
- DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_C, 0);
- break;
-
- }
- }
-
-
- /* Sleep function. */
- void
- sleep(unsigned len)
- {
- DosSleep(len * 1000L);
- }
-
- /* Just pretend that everyone is a superuser */
-
- int setuid()
- { return 0; }
-
- int setgid()
- { return 0; }
-
- int getuid(void)
- { return 0; }
-
- int geteuid(void)
- { return 0; }
-
- int getgid(void)
- { return 0; }
-
- int getegid(void)
- { return 0; }
-
- /*
- * The following code is based on the do_exec and do_aexec functions
- * in file doio.c
- */
- int
- do_aspawn(really,arglast)
- STR *really;
- int *arglast;
- {
- register STR **st = stack->ary_array;
- register int sp = arglast[1];
- register int items = arglast[2] - sp;
- register char **a;
- char **argv;
- char *tmps;
- int status;
-
- if (items) {
- New(1101,argv, items+1, char*);
- a = argv;
- for (st += ++sp; items > 0; items--,st++) {
- if (*st)
- *a++ = str_get(*st);
- else
- *a++ = "";
- }
- *a = Nullch;
- if (really && *(tmps = str_get(really)))
- status = spawnvp(P_WAIT,tmps,argv);
- else
- status = spawnvp(P_WAIT,argv[0],argv);
- Safefree(argv);
- }
- return status;
- }
-
- char *getenv(char *name);
-
- int
- do_spawn(cmd)
- char *cmd;
- {
- register char **a;
- register char *s;
- char **argv;
- char flags[10];
- int status;
- char *shell, *cmd2;
-
- /* save an extra exec if possible */
- if ((shell = getenv("COMSPEC")) == 0)
- shell = "C:\\OS2\\CMD.EXE";
-
- /* see if there are shell metacharacters in it */
- if (strchr(cmd, '>') || strchr(cmd, '<') || strchr(cmd, '|')
- || strchr(cmd, '&') || strchr(cmd, '^'))
- doshell:
- return spawnl(P_WAIT,shell,shell,"/C",cmd,(char*)0);
-
- New(1102,argv, strlen(cmd) / 2 + 2, char*);
-
- New(1103,cmd2, strlen(cmd) + 1, char);
- strcpy(cmd2, cmd);
- a = argv;
- for (s = cmd2; *s;) {
- while (*s && isspace(*s)) s++;
- if (*s)
- *(a++) = s;
- while (*s && !isspace(*s)) s++;
- if (*s)
- *s++ = '\0';
- }
- *a = Nullch;
- if (argv[0])
- if ((status = spawnvp(P_WAIT,argv[0],argv)) == -1) {
- Safefree(argv);
- Safefree(cmd2);
- goto doshell;
- }
- Safefree(cmd2);
- Safefree(argv);
- return status;
- }
-
- usage(char *myname)
- {
- #ifdef MSDOS
- printf("\nUsage: %s [-acdnpPsSvw] [-0[octal]] [-Dnumber] [-i[extension]] [-Idirectory]"
- #else
- printf("\nUsage: %s [-acdnpPsSuUvw] [-Dnumber] [-i[extension]] [-Idirectory]"
- #endif
- "\n [-e \"command\"] [-x[directory]] [filename] [arguments]\n", myname);
-
- printf("\n -a autosplit mode with -n or -p"
- "\n -c syntaxcheck only"
- "\n -d run scripts under debugger"
- "\n -n assume 'while (<>) { ...script... }' loop arround your script"
- "\n -p assume loop like -n but print line also like sed"
- "\n -P run script through C preprocessor befor compilation"
- "\n -s enable some switch parsing for switches after script name"
- "\n -S look for the script using PATH environment variable");
- #ifndef MSDOS
- printf("\n -u dump core after compiling the script"
- "\n -U allow unsafe operations");
- #endif
- printf("\n -v print version number and patchlevel of perl"
- "\n -w turn warnings on for compilation of your script\n"
- "\n -0[octal] specify record separator (0, if no argument)"
- "\n -Dnumber set debugging flags (argument is a bit mask)"
- "\n -i[extension] edit <> files in place (make backup if extension supplied)"
- "\n -Idirectory specify include directory in conjunction with -P"
- "\n -e command one line of script, multiple -e options are allowed"
- "\n [filename] can be ommitted, when -e is used"
- "\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n");
- }
-