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1 | /* $RCSfile: os2.c,v $$Revision: 4.0.1.1 $$Date: 91/06/07 11:23:06 $ |
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2 | * |
3 | * (C) Copyright 1989, 1990 Diomidis Spinellis. |
4 | * |
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5 | * You may distribute under the terms of either the GNU General Public |
6 | * License or the Artistic License, as specified in the README file. |
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7 | * |
8 | * $Log: os2.c,v $ |
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9 | * Revision 4.0.1.1 91/06/07 11:23:06 lwall |
10 | * patch4: new copyright notice |
11 | * |
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12 | * Revision 4.0 91/03/20 01:36:21 lwall |
13 | * 4.0 baseline. |
14 | * |
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15 | * Revision 3.0.1.2 90/11/10 01:42:38 lwall |
16 | * patch38: more msdos/os2 upgrades |
17 | * |
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18 | * Revision 3.0.1.1 90/10/15 17:49:55 lwall |
19 | * patch29: Initial revision |
20 | * |
21 | * Revision 3.0.1.1 90/03/27 16:10:41 lwall |
22 | * patch16: MSDOS support |
23 | * |
24 | * Revision 1.1 90/03/18 20:32:01 dds |
25 | * Initial revision |
26 | * |
27 | */ |
28 | |
29 | #define INCL_DOS |
30 | #define INCL_NOPM |
31 | #include <os2.h> |
32 | |
33 | /* |
34 | * Various Unix compatibility functions for OS/2 |
35 | */ |
36 | |
37 | #include <stdio.h> |
38 | #include <errno.h> |
39 | #include <process.h> |
40 | |
41 | #include "EXTERN.h" |
42 | #include "perl.h" |
43 | |
44 | |
45 | /* dummies */ |
46 | |
47 | int ioctl(int handle, unsigned int function, char *data) |
48 | { return -1; } |
49 | |
50 | int userinit() |
51 | { return -1; } |
52 | |
53 | int syscall() |
54 | { return -1; } |
55 | |
56 | |
57 | /* extendd chdir() */ |
58 | |
59 | int chdir(char *path) |
60 | { |
61 | if ( path[0] != 0 && path[1] == ':' ) |
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62 | DosSelectDisk(toupper(path[0]) - '@'); |
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63 | |
64 | DosChDir(path, 0L); |
65 | } |
66 | |
67 | |
68 | /* priorities */ |
69 | |
70 | int setpriority(int class, int pid, int val) |
71 | { |
72 | int flag = 0; |
73 | |
74 | if ( pid < 0 ) |
75 | { |
76 | flag++; |
77 | pid = -pid; |
78 | } |
79 | |
80 | return DosSetPrty(flag ? PRTYS_PROCESSTREE : PRTYS_PROCESS, class, val, pid); |
81 | } |
82 | |
83 | int getpriority(int which /* ignored */, int pid) |
84 | { |
85 | USHORT val; |
86 | |
87 | if ( DosGetPrty(PRTYS_PROCESS, &val, pid) ) |
88 | return -1; |
89 | else |
90 | return val; |
91 | } |
92 | |
93 | |
94 | /* get parent process id */ |
95 | |
96 | int getppid(void) |
97 | { |
98 | PIDINFO pi; |
99 | |
100 | DosGetPID(&pi); |
101 | return pi.pidParent; |
102 | } |
103 | |
104 | |
105 | /* kill */ |
106 | |
107 | int kill(int pid, int sig) |
108 | { |
109 | int flag = 0; |
110 | |
111 | if ( pid < 0 ) |
112 | { |
113 | flag++; |
114 | pid = -pid; |
115 | } |
116 | |
117 | switch ( sig & 3 ) |
118 | { |
119 | |
120 | case 0: |
121 | DosKillProcess(flag ? DKP_PROCESSTREE : DKP_PROCESS, pid); |
122 | break; |
123 | |
124 | case 1: /* FLAG A */ |
125 | DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_A, 0); |
126 | break; |
127 | |
128 | case 2: /* FLAG B */ |
129 | DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_B, 0); |
130 | break; |
131 | |
132 | case 3: /* FLAG C */ |
133 | DosFlagProcess(pid, flag ? FLGP_SUBTREE : FLGP_PID, PFLG_C, 0); |
134 | break; |
135 | |
136 | } |
137 | } |
138 | |
139 | |
140 | /* Sleep function. */ |
141 | void |
142 | sleep(unsigned len) |
143 | { |
144 | DosSleep(len * 1000L); |
145 | } |
146 | |
147 | /* Just pretend that everyone is a superuser */ |
148 | |
149 | int setuid() |
150 | { return 0; } |
151 | |
152 | int setgid() |
153 | { return 0; } |
154 | |
155 | int getuid(void) |
156 | { return 0; } |
157 | |
158 | int geteuid(void) |
159 | { return 0; } |
160 | |
161 | int getgid(void) |
162 | { return 0; } |
163 | |
164 | int getegid(void) |
165 | { return 0; } |
166 | |
167 | /* |
168 | * The following code is based on the do_exec and do_aexec functions |
169 | * in file doio.c |
170 | */ |
171 | int |
172 | do_aspawn(really,arglast) |
173 | STR *really; |
174 | int *arglast; |
175 | { |
176 | register STR **st = stack->ary_array; |
177 | register int sp = arglast[1]; |
178 | register int items = arglast[2] - sp; |
179 | register char **a; |
180 | char **argv; |
181 | char *tmps; |
182 | int status; |
183 | |
184 | if (items) { |
185 | New(1101,argv, items+1, char*); |
186 | a = argv; |
187 | for (st += ++sp; items > 0; items--,st++) { |
188 | if (*st) |
189 | *a++ = str_get(*st); |
190 | else |
191 | *a++ = ""; |
192 | } |
193 | *a = Nullch; |
194 | if (really && *(tmps = str_get(really))) |
195 | status = spawnvp(P_WAIT,tmps,argv); |
196 | else |
197 | status = spawnvp(P_WAIT,argv[0],argv); |
198 | Safefree(argv); |
199 | } |
200 | return status; |
201 | } |
202 | |
203 | char *getenv(char *name); |
204 | |
205 | int |
206 | do_spawn(cmd) |
207 | char *cmd; |
208 | { |
209 | register char **a; |
210 | register char *s; |
211 | char **argv; |
212 | char flags[10]; |
213 | int status; |
214 | char *shell, *cmd2; |
215 | |
216 | /* save an extra exec if possible */ |
217 | if ((shell = getenv("COMSPEC")) == 0) |
218 | shell = "C:\\OS2\\CMD.EXE"; |
219 | |
220 | /* see if there are shell metacharacters in it */ |
221 | if (strchr(cmd, '>') || strchr(cmd, '<') || strchr(cmd, '|') |
222 | || strchr(cmd, '&') || strchr(cmd, '^')) |
223 | doshell: |
224 | return spawnl(P_WAIT,shell,shell,"/C",cmd,(char*)0); |
225 | |
226 | New(1102,argv, strlen(cmd) / 2 + 2, char*); |
227 | |
228 | New(1103,cmd2, strlen(cmd) + 1, char); |
229 | strcpy(cmd2, cmd); |
230 | a = argv; |
231 | for (s = cmd2; *s;) { |
232 | while (*s && isspace(*s)) s++; |
233 | if (*s) |
234 | *(a++) = s; |
235 | while (*s && !isspace(*s)) s++; |
236 | if (*s) |
237 | *s++ = '\0'; |
238 | } |
239 | *a = Nullch; |
240 | if (argv[0]) |
241 | if ((status = spawnvp(P_WAIT,argv[0],argv)) == -1) { |
242 | Safefree(argv); |
243 | Safefree(cmd2); |
244 | goto doshell; |
245 | } |
246 | Safefree(cmd2); |
247 | Safefree(argv); |
248 | return status; |
249 | } |
250 | |
251 | usage(char *myname) |
252 | { |
253 | #ifdef MSDOS |
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254 | printf("\nUsage: %s [-acdnpsSvw] [-0[octal]] [-Dnumber] [-i[extension]] [-Idirectory]" |
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255 | #else |
256 | printf("\nUsage: %s [-acdnpPsSuUvw] [-Dnumber] [-i[extension]] [-Idirectory]" |
257 | #endif |
258 | "\n [-e \"command\"] [-x[directory]] [filename] [arguments]\n", myname); |
259 | |
260 | printf("\n -a autosplit mode with -n or -p" |
261 | "\n -c syntaxcheck only" |
262 | "\n -d run scripts under debugger" |
263 | "\n -n assume 'while (<>) { ...script... }' loop arround your script" |
264 | "\n -p assume loop like -n but print line also like sed" |
265 | #ifndef MSDOS |
266 | "\n -P run script through C preprocessor befor compilation" |
267 | #endif |
268 | "\n -s enable some switch parsing for switches after script name" |
269 | "\n -S look for the script using PATH environment variable"); |
270 | #ifndef MSDOS |
271 | printf("\n -u dump core after compiling the script" |
272 | "\n -U allow unsafe operations"); |
273 | #endif |
274 | printf("\n -v print version number and patchlevel of perl" |
275 | "\n -w turn warnings on for compilation of your script\n" |
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276 | "\n -0[octal] specify record separator (0, if no argument)" |
277 | "\n -Dnumber set debugging flags (argument is a bit mask)" |
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278 | "\n -i[extension] edit <> files in place (make backup if extension supplied)" |
279 | "\n -Idirectory specify include directory in conjunction with -P" |
280 | "\n -e command one line of script, multiple -e options are allowed" |
281 | "\n [filename] can be ommitted, when -e is used" |
282 | "\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n"); |
283 | } |