Commit | Line | Data |
---|---|---|
5db16f6a EF |
1 | /* |
2 | * Cygwin extras | |
3 | */ | |
4 | ||
5 | #include "EXTERN.h" | |
6 | #include "perl.h" | |
7 | #undef USE_DYNAMIC_LOADING | |
8 | #include "XSUB.h" | |
9 | ||
6b49d266 | 10 | #include <unistd.h> |
b4bcd662 | 11 | #include <process.h> |
49fd6edc | 12 | #include <sys/cygwin.h> |
5db16f6a | 13 | |
b4bcd662 GS |
14 | /* |
15 | * pp_system() implemented via spawn() | |
16 | * - more efficient and useful when embedding Perl in non-Cygwin apps | |
17 | * - code mostly borrowed from djgpp.c | |
18 | */ | |
19 | static int | |
20 | do_spawnvp (const char *path, const char * const *argv) | |
21 | { | |
acfe0abc | 22 | dTHX; |
b4bcd662 GS |
23 | Sigsave_t ihand,qhand; |
24 | int childpid, result, status; | |
25 | ||
ec1aec95 YST |
26 | rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand); |
27 | rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand); | |
b4bcd662 GS |
28 | childpid = spawnvp(_P_NOWAIT,path,argv); |
29 | if (childpid < 0) { | |
30 | status = -1; | |
411caa50 | 31 | if(ckWARN(WARN_EXEC)) |
f98bc0c6 | 32 | Perl_warner(aTHX_ packWARN(WARN_EXEC),"Can't spawn \"%s\": %s", |
b4bcd662 | 33 | path,Strerror (errno)); |
b4bcd662 GS |
34 | } else { |
35 | do { | |
36 | result = wait4pid(childpid, &status, 0); | |
37 | } while (result == -1 && errno == EINTR); | |
38 | if(result < 0) | |
39 | status = -1; | |
40 | } | |
41 | (void)rsignal_restore(SIGINT, &ihand); | |
42 | (void)rsignal_restore(SIGQUIT, &qhand); | |
43 | return status; | |
44 | } | |
45 | ||
46 | int | |
47 | do_aspawn (SV *really, void **mark, void **sp) | |
48 | { | |
acfe0abc | 49 | dTHX; |
b4bcd662 GS |
50 | int rc; |
51 | char **a,*tmps,**argv; | |
52 | STRLEN n_a; | |
53 | ||
54 | if (sp<=mark) | |
55 | return -1; | |
56 | a=argv=(char**) alloca ((sp-mark+3)*sizeof (char*)); | |
57 | ||
58 | while (++mark <= sp) | |
59 | if (*mark) | |
60 | *a++ = SvPVx(*mark, n_a); | |
61 | else | |
62 | *a++ = ""; | |
63 | *a = Nullch; | |
64 | ||
65 | if (argv[0][0] != '/' && argv[0][0] != '\\' | |
66 | && !(argv[0][0] && argv[0][1] == ':' | |
67 | && (argv[0][2] == '/' || argv[0][2] != '\\')) | |
68 | ) /* will swawnvp use PATH? */ | |
69 | TAINT_ENV(); /* testing IFS here is overkill, probably */ | |
70 | ||
71 | if (really && *(tmps = SvPV(really, n_a))) | |
72 | rc=do_spawnvp (tmps,(const char * const *)argv); | |
73 | else | |
74 | rc=do_spawnvp (argv[0],(const char *const *)argv); | |
75 | ||
76 | return rc; | |
77 | } | |
78 | ||
79 | int | |
80 | do_spawn (char *cmd) | |
81 | { | |
acfe0abc | 82 | dTHX; |
b4bcd662 GS |
83 | char **a,*s,*metachars = "$&*(){}[]'\";\\?>|<~`\n"; |
84 | const char *command[4]; | |
85 | ||
86 | while (*cmd && isSPACE(*cmd)) | |
87 | cmd++; | |
88 | ||
89 | if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7])) | |
90 | cmd+=5; | |
91 | ||
92 | /* save an extra exec if possible */ | |
93 | /* see if there are shell metacharacters in it */ | |
94 | if (strstr (cmd,"...")) | |
95 | goto doshell; | |
96 | if (*cmd=='.' && isSPACE (cmd[1])) | |
97 | goto doshell; | |
98 | if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4])) | |
99 | goto doshell; | |
100 | for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */ | |
101 | if (*s=='=') | |
102 | goto doshell; | |
103 | ||
104 | for (s=cmd; *s; s++) | |
105 | if (strchr (metachars,*s)) | |
106 | { | |
107 | if (*s=='\n' && s[1]=='\0') | |
108 | { | |
109 | *s='\0'; | |
110 | break; | |
111 | } | |
112 | doshell: | |
113 | command[0] = "sh"; | |
114 | command[1] = "-c"; | |
115 | command[2] = cmd; | |
116 | command[3] = NULL; | |
117 | ||
118 | return do_spawnvp("sh",command); | |
119 | } | |
120 | ||
a02a5408 | 121 | Newx (PL_Argv,(s-cmd)/2+2,char*); |
b4bcd662 GS |
122 | PL_Cmd=savepvn (cmd,s-cmd); |
123 | a=PL_Argv; | |
124 | for (s=PL_Cmd; *s;) { | |
125 | while (*s && isSPACE (*s)) s++; | |
126 | if (*s) | |
127 | *(a++)=s; | |
128 | while (*s && !isSPACE (*s)) s++; | |
129 | if (*s) | |
130 | *s++='\0'; | |
131 | } | |
132 | *a=Nullch; | |
133 | if (!PL_Argv[0]) | |
134 | return -1; | |
135 | ||
136 | return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv); | |
137 | } | |
5db16f6a EF |
138 | |
139 | /* see also Cwd.pm */ | |
140 | static | |
141 | XS(Cygwin_cwd) | |
142 | { | |
143 | dXSARGS; | |
144 | char *cwd; | |
145 | ||
146 | if(items != 0) | |
147 | Perl_croak(aTHX_ "Usage: Cwd::cwd()"); | |
47dafe4d | 148 | if((cwd = getcwd(NULL, -1))) { |
5db16f6a EF |
149 | ST(0) = sv_2mortal(newSVpv(cwd, 0)); |
150 | safesysfree(cwd); | |
6be3b590 JH |
151 | #ifndef INCOMPLETE_TAINTS |
152 | SvTAINTED_on(ST(0)); | |
153 | #endif | |
5db16f6a EF |
154 | XSRETURN(1); |
155 | } | |
156 | XSRETURN_UNDEF; | |
157 | } | |
158 | ||
49fd6edc YST |
159 | static |
160 | XS(XS_Cygwin_pid_to_winpid) | |
161 | { | |
162 | dXSARGS; | |
d2dc0126 YST |
163 | dXSTARG; |
164 | pid_t pid, RETVAL; | |
165 | ||
49fd6edc YST |
166 | if (items != 1) |
167 | Perl_croak(aTHX_ "Usage: Cygwin::pid_to_winpid(pid)"); | |
d2dc0126 YST |
168 | |
169 | pid = (pid_t)SvIV(ST(0)); | |
170 | ||
49fd6edc YST |
171 | if ((RETVAL = cygwin_internal(CW_CYGWIN_PID_TO_WINPID, pid)) > 0) { |
172 | XSprePUSH; PUSHi((IV)RETVAL); | |
173 | XSRETURN(1); | |
174 | } | |
175 | XSRETURN_UNDEF; | |
176 | } | |
177 | ||
178 | static | |
179 | XS(XS_Cygwin_winpid_to_pid) | |
180 | { | |
181 | dXSARGS; | |
d2dc0126 YST |
182 | dXSTARG; |
183 | pid_t pid, RETVAL; | |
184 | ||
49fd6edc YST |
185 | if (items != 1) |
186 | Perl_croak(aTHX_ "Usage: Cygwin::winpid_to_pid(pid)"); | |
d2dc0126 YST |
187 | |
188 | pid = (pid_t)SvIV(ST(0)); | |
189 | ||
49fd6edc YST |
190 | if ((RETVAL = cygwin32_winpid_to_pid(pid)) > 0) { |
191 | XSprePUSH; PUSHi((IV)RETVAL); | |
192 | XSRETURN(1); | |
193 | } | |
194 | XSRETURN_UNDEF; | |
195 | } | |
196 | ||
197 | ||
5db16f6a EF |
198 | void |
199 | init_os_extras(void) | |
200 | { | |
201 | char *file = __FILE__; | |
202 | dTHX; | |
203 | ||
204 | newXS("Cwd::cwd", Cygwin_cwd, file); | |
49fd6edc YST |
205 | newXS("Cygwin::winpid_to_pid", XS_Cygwin_winpid_to_pid, file); |
206 | newXS("Cygwin::pid_to_winpid", XS_Cygwin_pid_to_winpid, file); | |
5db16f6a | 207 | } |