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> |
ee8c7f54 | 11 | #include <process.h> |
5db16f6a | 12 | |
ee8c7f54 CB |
13 | /* |
14 | * pp_system() implemented via spawn() | |
15 | * - more efficient and useful when embedding Perl in non-Cygwin apps | |
16 | * - code mostly borrowed from djgpp.c | |
17 | */ | |
18 | static int | |
19 | do_spawnvp (const char *path, const char * const *argv) | |
20 | { | |
21 | dTHXo; | |
22 | Sigsave_t ihand,qhand; | |
23 | int childpid, result, status; | |
24 | ||
25 | rsignal_save(SIGINT, SIG_IGN, &ihand); | |
26 | rsignal_save(SIGQUIT, SIG_IGN, &qhand); | |
27 | childpid = spawnvp(_P_NOWAIT,path,argv); | |
28 | if (childpid < 0) { | |
29 | status = -1; | |
30 | if(ckWARN(WARN_EXEC)) { | |
31 | dTHR; | |
32 | Perl_warner(aTHX_ WARN_EXEC,"Can't spawn \"%s\": %s", | |
33 | path,Strerror (errno)); | |
34 | } | |
35 | } else { | |
36 | do { | |
37 | result = wait4pid(childpid, &status, 0); | |
38 | } while (result == -1 && errno == EINTR); | |
39 | if(result < 0) | |
40 | status = -1; | |
41 | } | |
42 | (void)rsignal_restore(SIGINT, &ihand); | |
43 | (void)rsignal_restore(SIGQUIT, &qhand); | |
44 | return status; | |
45 | } | |
46 | ||
47 | int | |
48 | do_aspawn (SV *really, void **mark, void **sp) | |
49 | { | |
50 | dTHXo; | |
51 | int rc; | |
52 | char **a,*tmps,**argv; | |
53 | STRLEN n_a; | |
54 | ||
55 | if (sp<=mark) | |
56 | return -1; | |
57 | a=argv=(char**) alloca ((sp-mark+3)*sizeof (char*)); | |
58 | ||
59 | while (++mark <= sp) | |
60 | if (*mark) | |
61 | *a++ = SvPVx(*mark, n_a); | |
62 | else | |
63 | *a++ = ""; | |
64 | *a = Nullch; | |
65 | ||
66 | if (argv[0][0] != '/' && argv[0][0] != '\\' | |
67 | && !(argv[0][0] && argv[0][1] == ':' | |
68 | && (argv[0][2] == '/' || argv[0][2] != '\\')) | |
69 | ) /* will swawnvp use PATH? */ | |
70 | TAINT_ENV(); /* testing IFS here is overkill, probably */ | |
71 | ||
72 | if (really && *(tmps = SvPV(really, n_a))) | |
73 | rc=do_spawnvp (tmps,(const char * const *)argv); | |
74 | else | |
75 | rc=do_spawnvp (argv[0],(const char *const *)argv); | |
76 | ||
77 | return rc; | |
78 | } | |
79 | ||
80 | int | |
81 | do_spawn (char *cmd) | |
82 | { | |
83 | dTHXo; | |
84 | char **a,*s,*metachars = "$&*(){}[]'\";\\?>|<~`\n"; | |
85 | const char *command[4]; | |
86 | ||
87 | while (*cmd && isSPACE(*cmd)) | |
88 | cmd++; | |
89 | ||
90 | if (strnEQ (cmd,"/bin/sh",7) && isSPACE (cmd[7])) | |
91 | cmd+=5; | |
92 | ||
93 | /* save an extra exec if possible */ | |
94 | /* see if there are shell metacharacters in it */ | |
95 | if (strstr (cmd,"...")) | |
96 | goto doshell; | |
97 | if (*cmd=='.' && isSPACE (cmd[1])) | |
98 | goto doshell; | |
99 | if (strnEQ (cmd,"exec",4) && isSPACE (cmd[4])) | |
100 | goto doshell; | |
101 | for (s=cmd; *s && isALPHA (*s); s++) ; /* catch VAR=val gizmo */ | |
102 | if (*s=='=') | |
103 | goto doshell; | |
104 | ||
105 | for (s=cmd; *s; s++) | |
106 | if (strchr (metachars,*s)) | |
107 | { | |
108 | if (*s=='\n' && s[1]=='\0') | |
109 | { | |
110 | *s='\0'; | |
111 | break; | |
112 | } | |
113 | doshell: | |
114 | command[0] = "sh"; | |
115 | command[1] = "-c"; | |
116 | command[2] = cmd; | |
117 | command[3] = NULL; | |
118 | ||
119 | return do_spawnvp("sh",command); | |
120 | } | |
121 | ||
122 | New (1303,PL_Argv,(s-cmd)/2+2,char*); | |
123 | PL_Cmd=savepvn (cmd,s-cmd); | |
124 | a=PL_Argv; | |
125 | for (s=PL_Cmd; *s;) { | |
126 | while (*s && isSPACE (*s)) s++; | |
127 | if (*s) | |
128 | *(a++)=s; | |
129 | while (*s && !isSPACE (*s)) s++; | |
130 | if (*s) | |
131 | *s++='\0'; | |
132 | } | |
133 | *a=Nullch; | |
134 | if (!PL_Argv[0]) | |
135 | return -1; | |
136 | ||
137 | return do_spawnvp(PL_Argv[0],(const char * const *)PL_Argv); | |
138 | } | |
5db16f6a EF |
139 | |
140 | /* see also Cwd.pm */ | |
141 | static | |
142 | XS(Cygwin_cwd) | |
143 | { | |
144 | dXSARGS; | |
145 | char *cwd; | |
146 | ||
147 | if(items != 0) | |
148 | Perl_croak(aTHX_ "Usage: Cwd::cwd()"); | |
ee8c7f54 | 149 | if((cwd = getcwd(NULL, 0))) { |
5db16f6a EF |
150 | ST(0) = sv_2mortal(newSVpv(cwd, 0)); |
151 | safesysfree(cwd); | |
152 | XSRETURN(1); | |
153 | } | |
154 | XSRETURN_UNDEF; | |
155 | } | |
156 | ||
157 | void | |
158 | init_os_extras(void) | |
159 | { | |
160 | char *file = __FILE__; | |
161 | dTHX; | |
162 | ||
163 | newXS("Cwd::cwd", Cygwin_cwd, file); | |
164 | } |