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1 | /* $Header: os2.c,v 3.0.1.1 90/10/15 17:49:55 lwall Locked $ |
2 | * |
3 | * (C) Copyright 1989, 1990 Diomidis Spinellis. |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
7 | * |
8 | * $Log: os2.c,v $ |
9 | * Revision 3.0.1.1 90/10/15 17:49:55 lwall |
10 | * patch29: Initial revision |
11 | * |
12 | * Revision 3.0.1.1 90/03/27 16:10:41 lwall |
13 | * patch16: MSDOS support |
14 | * |
15 | * Revision 1.1 90/03/18 20:32:01 dds |
16 | * Initial revision |
17 | * |
18 | */ |
19 | |
20 | #define INCL_DOS |
21 | #define INCL_NOPM |
22 | #include <os2.h> |
23 | |
24 | /* |
25 | * Various Unix compatibility functions for OS/2 |
26 | */ |
27 | |
28 | #include <stdio.h> |
29 | #include <errno.h> |
30 | #include <process.h> |
31 | |
32 | #include "EXTERN.h" |
33 | #include "perl.h" |
34 | |
35 | |
36 | /* dummies */ |
37 | |
38 | int ioctl(int handle, unsigned int function, char *data) |
39 | { return -1; } |
40 | |
41 | int userinit() |
42 | { return -1; } |
43 | |
44 | int syscall() |
45 | { return -1; } |
46 | |
47 | |
48 | /* extendd chdir() */ |
49 | |
50 | int chdir(char *path) |
51 | { |
52 | if ( path[0] != 0 && path[1] == ':' ) |
53 | DosSelectDisk(tolower(path[0]) - '@'); |
54 | |
55 | DosChDir(path, 0L); |
56 | } |
57 | |
58 | |
59 | /* priorities */ |
60 | |
61 | int setpriority(int class, int pid, int val) |
62 | { |
63 | int flag = 0; |
64 | |
65 | if ( pid < 0 ) |
66 | { |
67 | flag++; |
68 | pid = -pid; |
69 | } |
70 | |
71 | return DosSetPrty(flag ? PRTYS_PROCESSTREE : PRTYS_PROCESS, class, val, pid); |
72 | } |
73 | |
74 | int getpriority(int which /* ignored */, int pid) |
75 | { |
76 | USHORT val; |
77 | |
78 | if ( DosGetPrty(PRTYS_PROCESS, &val, pid) ) |
79 | return -1; |
80 | else |
81 | return val; |
82 | } |
83 | |
84 | |
85 | /* get parent process id */ |
86 | |
87 | int getppid(void) |
88 | { |
89 | PIDINFO pi; |
90 | |
91 | DosGetPID(&pi); |
92 | return pi.pidParent; |
93 | } |
94 | |
95 | |
96 | /* kill */ |
97 | |
98 | int kill(int pid, int sig) |
99 | { |
100 | int flag = 0; |
101 | |
102 | if ( pid < 0 ) |
103 | { |
104 | flag++; |
105 | pid = -pid; |
106 | } |
107 | |
108 | switch ( sig & 3 ) |
109 | { |
110 | |
111 | case 0: |
112 | DosKillProcess(flag ? DKP_PROCESSTREE : DKP_PROCESS, pid); |
113 | break; |
114 | |
115 | case 1: /* FLAG A */ |
116 | DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_A, 0); |
117 | break; |
118 | |
119 | case 2: /* FLAG B */ |
120 | DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_B, 0); |
121 | break; |
122 | |
123 | case 3: /* FLAG C */ |
124 | DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_C, 0); |
125 | break; |
126 | |
127 | } |
128 | } |
129 | |
130 | |
131 | /* Sleep function. */ |
132 | void |
133 | sleep(unsigned len) |
134 | { |
135 | DosSleep(len * 1000L); |
136 | } |
137 | |
138 | /* Just pretend that everyone is a superuser */ |
139 | |
140 | int setuid() |
141 | { return 0; } |
142 | |
143 | int setgid() |
144 | { return 0; } |
145 | |
146 | int getuid(void) |
147 | { return 0; } |
148 | |
149 | int geteuid(void) |
150 | { return 0; } |
151 | |
152 | int getgid(void) |
153 | { return 0; } |
154 | |
155 | int getegid(void) |
156 | { return 0; } |
157 | |
158 | /* |
159 | * The following code is based on the do_exec and do_aexec functions |
160 | * in file doio.c |
161 | */ |
162 | int |
163 | do_aspawn(really,arglast) |
164 | STR *really; |
165 | int *arglast; |
166 | { |
167 | register STR **st = stack->ary_array; |
168 | register int sp = arglast[1]; |
169 | register int items = arglast[2] - sp; |
170 | register char **a; |
171 | char **argv; |
172 | char *tmps; |
173 | int status; |
174 | |
175 | if (items) { |
176 | New(1101,argv, items+1, char*); |
177 | a = argv; |
178 | for (st += ++sp; items > 0; items--,st++) { |
179 | if (*st) |
180 | *a++ = str_get(*st); |
181 | else |
182 | *a++ = ""; |
183 | } |
184 | *a = Nullch; |
185 | if (really && *(tmps = str_get(really))) |
186 | status = spawnvp(P_WAIT,tmps,argv); |
187 | else |
188 | status = spawnvp(P_WAIT,argv[0],argv); |
189 | Safefree(argv); |
190 | } |
191 | return status; |
192 | } |
193 | |
194 | char *getenv(char *name); |
195 | |
196 | int |
197 | do_spawn(cmd) |
198 | char *cmd; |
199 | { |
200 | register char **a; |
201 | register char *s; |
202 | char **argv; |
203 | char flags[10]; |
204 | int status; |
205 | char *shell, *cmd2; |
206 | |
207 | /* save an extra exec if possible */ |
208 | if ((shell = getenv("COMSPEC")) == 0) |
209 | shell = "C:\\OS2\\CMD.EXE"; |
210 | |
211 | /* see if there are shell metacharacters in it */ |
212 | if (strchr(cmd, '>') || strchr(cmd, '<') || strchr(cmd, '|') |
213 | || strchr(cmd, '&') || strchr(cmd, '^')) |
214 | doshell: |
215 | return spawnl(P_WAIT,shell,shell,"/C",cmd,(char*)0); |
216 | |
217 | New(1102,argv, strlen(cmd) / 2 + 2, char*); |
218 | |
219 | New(1103,cmd2, strlen(cmd) + 1, char); |
220 | strcpy(cmd2, cmd); |
221 | a = argv; |
222 | for (s = cmd2; *s;) { |
223 | while (*s && isspace(*s)) s++; |
224 | if (*s) |
225 | *(a++) = s; |
226 | while (*s && !isspace(*s)) s++; |
227 | if (*s) |
228 | *s++ = '\0'; |
229 | } |
230 | *a = Nullch; |
231 | if (argv[0]) |
232 | if ((status = spawnvp(P_WAIT,argv[0],argv)) == -1) { |
233 | Safefree(argv); |
234 | Safefree(cmd2); |
235 | goto doshell; |
236 | } |
237 | Safefree(cmd2); |
238 | Safefree(argv); |
239 | return status; |
240 | } |
241 | |
242 | usage(char *myname) |
243 | { |
244 | #ifdef MSDOS |
245 | printf("\nUsage: %s [-acdnpsSvw] [-Dnumber] [-i[extension]] [-Idirectory]" |
246 | #else |
247 | printf("\nUsage: %s [-acdnpPsSuUvw] [-Dnumber] [-i[extension]] [-Idirectory]" |
248 | #endif |
249 | "\n [-e \"command\"] [-x[directory]] [filename] [arguments]\n", myname); |
250 | |
251 | printf("\n -a autosplit mode with -n or -p" |
252 | "\n -c syntaxcheck only" |
253 | "\n -d run scripts under debugger" |
254 | "\n -n assume 'while (<>) { ...script... }' loop arround your script" |
255 | "\n -p assume loop like -n but print line also like sed" |
256 | #ifndef MSDOS |
257 | "\n -P run script through C preprocessor befor compilation" |
258 | #endif |
259 | "\n -s enable some switch parsing for switches after script name" |
260 | "\n -S look for the script using PATH environment variable"); |
261 | #ifndef MSDOS |
262 | printf("\n -u dump core after compiling the script" |
263 | "\n -U allow unsafe operations"); |
264 | #endif |
265 | printf("\n -v print version number and patchlevel of perl" |
266 | "\n -w turn warnings on for compilation of your script\n" |
267 | "\n -Dnumber set debugging flags" |
268 | "\n -i[extension] edit <> files in place (make backup if extension supplied)" |
269 | "\n -Idirectory specify include directory in conjunction with -P" |
270 | "\n -e command one line of script, multiple -e options are allowed" |
271 | "\n [filename] can be ommitted, when -e is used" |
272 | "\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); |
273 | } |