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code |
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#define PERL_NO_GET_CONTEXT |
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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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#include "ppport.h" |
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/* From handy.h since 5.027006 */ |
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#ifndef strBEGINs |
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#define strBEGINs(s1,s2) (strncmp(s1,"" s2 "", sizeof(s2)-1) == 0) |
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#endif |
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/* From embed.h, but only defined #ifdef PERL_CORE */ |
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#ifndef rsignal_save |
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#define rsignal_save(a,b,c) Perl_rsignal_save(aTHX_ a,b,c) |
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#define rsignal_restore(a,b) Perl_rsignal_restore(aTHX_ a,b) |
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#endif |
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18
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#include |
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extern char **environ; |
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22
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Pid_t |
24
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4
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do_posix_spawn (const char *cmd, char **argv) { |
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Pid_t pid; |
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posix_spawnattr_t attr; |
27
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4
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short flags = 0; |
28
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29
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4
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posix_spawnattr_init(&attr); |
30
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4
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posix_spawnattr_setflags(&attr, flags); |
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4
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errno = posix_spawnp(&pid, cmd, NULL, &attr, argv, environ); |
32
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4
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posix_spawnattr_destroy(&attr); |
33
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34
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4
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50
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return errno ? 0 : pid; |
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} |
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38
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/* borrowed from Perl's doio.c: S_exec_failed */ |
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static void |
40
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0
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S_posix_spawn_failed (pTHX_ const char *cmd) |
41
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{ |
42
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0
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const int e = errno; |
43
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/* PERL_ARGS_ASSERT_EXEC_FAILED */ |
44
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assert(cmd); |
45
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46
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0
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0
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if (ckWARN(WARN_EXEC)) |
47
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0
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Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't spawn \"%s\": %s", |
48
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cmd, Strerror(e)); |
49
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0
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} |
50
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51
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52
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/* borrowed from Perl's doio.c: Perl_do_aexec5 */ |
53
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Pid_t |
54
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1
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do_posix_spawn3 (pTHX_ SV *really, SV **mark, SV **sp) |
55
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{ |
56
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/* PERL_ARGS_ASSERT_DO_AEXEC5; */ |
57
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assert(mark); assert(sp); |
58
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assert(sp >= mark); |
59
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1
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ENTER; |
60
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{ |
61
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1
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Pid_t pid = 0; |
62
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const char **argv, **a; |
63
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1
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const char *tmps = NULL; |
64
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1
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50
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Newx(argv, sp - mark + 1, const char*); |
65
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1
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SAVEFREEPV(argv); |
66
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1
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a = argv; |
67
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68
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5
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100
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while (++mark <= sp) { |
69
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4
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50
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if (*mark) { |
70
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4
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100
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char *arg = savepv(SvPV_nolen_const(*mark)); |
71
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4
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SAVEFREEPV(arg); |
72
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4
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*a++ = arg; |
73
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} else |
74
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0
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*a++ = ""; |
75
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} |
76
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1
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*a = NULL; |
77
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1
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50
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if (really) { |
78
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0
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0
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tmps = savepv(SvPV_nolen_const(really)); |
79
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0
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SAVEFREEPV(tmps); |
80
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} |
81
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1
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50
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if ((!really && argv[0] && *argv[0] != '/') || |
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50
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50
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50
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82
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0
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0
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(really && *tmps != '/')) /* will posix_spawn use PATH? */ |
83
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0
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0
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TAINT_ENV(); /* testing IFS here is overkill, probably */ |
84
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1
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PERL_FPU_PRE_EXEC |
85
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1
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50
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if (really && *tmps) { |
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0
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86
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0
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pid = do_posix_spawn(tmps,EXEC_ARGV_CAST(argv)); |
87
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1
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return pid; |
88
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1
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50
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} else if (argv[0]) { |
89
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1
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pid = do_posix_spawn(argv[0],EXEC_ARGV_CAST(argv)); |
90
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1
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return pid; |
91
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} else { |
92
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0
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SETERRNO(ENOENT,RMS_FNF); |
93
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} |
94
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0
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PERL_FPU_POST_EXEC |
95
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0
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0
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S_posix_spawn_failed(aTHX_ (really ? tmps : argv[0] ? argv[0] : "")); |
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0
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96
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} |
97
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0
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LEAVE; |
98
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0
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return FALSE; |
99
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} |
100
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101
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102
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Pid_t |
103
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2
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do_posix_spawn_shell (const char *path, char *name, char *flags, char *cmd) |
104
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{ |
105
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Pid_t pid; |
106
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2
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const char *argv[] = { name, flags, cmd, NULL }; |
107
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2
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pid = do_posix_spawn(path, (char **)argv); |
108
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2
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return pid; |
109
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} |
110
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111
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112
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/* borrowed from Perl's doio.c: Perl_do_exec3 */ |
113
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Pid_t |
114
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3
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do_posix_spawn1 (pTHX_ const char *incmd) |
115
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{ |
116
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3
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|
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Pid_t pid = 0; |
117
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const char **argv, **a; |
118
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|
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char *s; |
119
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char *buf; |
120
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|
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char *cmd; |
121
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|
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/* Make a copy so we can change it */ |
122
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3
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|
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const Size_t cmdlen = strlen(incmd) + 1; |
123
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|
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124
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|
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/* PERL_ARGS_ASSERT_DO_EXEC3; */ |
125
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assert(incmd); |
126
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|
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127
|
3
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ENTER; |
128
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3
|
|
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Newx(buf, cmdlen, char); |
129
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3
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SAVEFREEPV(buf); |
130
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3
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cmd = buf; |
131
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3
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memcpy(cmd, incmd, cmdlen); |
132
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133
|
3
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50
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while (*cmd && isSPACE(*cmd)) |
|
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50
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134
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0
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cmd++; |
135
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136
|
|
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/* save an extra exec if possible */ |
137
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138
|
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#ifdef CSH |
139
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{ |
140
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|
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#define PERL_FLAGS_MAX 10 |
141
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char flags[PERL_FLAGS_MAX]; |
142
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|
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if (strnEQ(cmd,PL_cshname,PL_cshlen) && |
143
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strBEGINs(cmd+PL_cshlen," -c")) { |
144
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my_strlcpy(flags, "-c", PERL_FLAGS_MAX); |
145
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s = cmd+PL_cshlen+3; |
146
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if (*s == 'f') { |
147
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s++; |
148
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my_strlcat(flags, "f", PERL_FLAGS_MAX - 2); |
149
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|
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} |
150
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if (*s == ' ') |
151
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s++; |
152
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if (*s++ == '\'') { |
153
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char * const ncmd = s; |
154
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155
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while (*s) |
156
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s++; |
157
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if (s[-1] == '\n') |
158
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|
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*--s = '\0'; |
159
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if (s[-1] == '\'') { |
160
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*--s = '\0'; |
161
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PERL_FPU_PRE_EXEC |
162
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pid = do_posix_spawn_shell(PL_cshname, "csh", flags, ncmd); |
163
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PERL_FPU_POST_EXEC |
164
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if (pid) return pid; |
165
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*s = '\''; |
166
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S_posix_spawn_failed(aTHX_ PL_cshname); |
167
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goto leave; |
168
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|
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} |
169
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} |
170
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} |
171
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} |
172
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#endif /* CSH */ |
173
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174
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/* see if there are shell metacharacters in it */ |
175
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176
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3
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50
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if (*cmd == '.' && isSPACE(cmd[1])) |
|
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0
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177
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0
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goto doshell; |
178
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179
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3
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50
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if (strBEGINs(cmd,"exec") && isSPACE(cmd[4])) |
|
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0
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180
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0
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goto doshell; |
181
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182
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3
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s = cmd; |
183
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26
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100
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while (isWORDCHAR(*s)) |
184
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23
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s++; /* catch VAR=val gizmo */ |
185
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3
|
50
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|
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|
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if (*s == '=') |
186
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0
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|
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goto doshell; |
187
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|
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|
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188
|
50
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100
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|
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|
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for (s = cmd; *s; s++) { |
189
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49
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100
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|
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if (*s != ' ' && !isALPHA(*s) && |
|
|
100
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|
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100
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|
|
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190
|
7
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memCHRs("$&*(){}[]'\";\\|?<>~`\n",*s)) { |
191
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2
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50
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|
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|
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if (*s == '\n' && !s[1]) { |
|
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0
|
|
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|
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192
|
0
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|
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|
*s = '\0'; |
193
|
0
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|
|
|
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|
break; |
194
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|
|
|
|
|
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} |
195
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|
|
|
|
|
|
/* handle the 2>&1 construct at the end */ |
196
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2
|
50
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|
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|
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if (*s == '>' && s[1] == '&' && s[2] == '1' |
|
|
0
|
|
|
|
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|
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0
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|
|
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197
|
0
|
0
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|
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&& s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2]) |
|
|
0
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0
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|
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|
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198
|
0
|
0
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|
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&& (!s[3] || isSPACE(s[3]))) |
|
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0
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|
|
|
|
|
199
|
|
|
|
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|
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{ |
200
|
0
|
|
|
|
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|
const char *t = s + 3; |
201
|
|
|
|
|
|
|
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202
|
0
|
0
|
|
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|
|
while (*t && isSPACE(*t)) |
|
|
0
|
|
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|
|
|
203
|
0
|
|
|
|
|
|
++t; |
204
|
0
|
0
|
|
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|
|
if (!*t && (PerlLIO_dup2(1,2) != -1)) { |
|
|
0
|
|
|
|
|
|
205
|
0
|
|
|
|
|
|
s[-2] = '\0'; |
206
|
0
|
|
|
|
|
|
break; |
207
|
|
|
|
|
|
|
} |
208
|
|
|
|
|
|
|
} |
209
|
|
|
|
|
|
|
doshell: |
210
|
2
|
|
|
|
|
|
PERL_FPU_PRE_EXEC |
211
|
2
|
|
|
|
|
|
pid = do_posix_spawn_shell(PL_sh_path, "sh", "-c", cmd); |
212
|
2
|
|
|
|
|
|
PERL_FPU_POST_EXEC |
213
|
2
|
50
|
|
|
|
|
if (pid) return pid; |
214
|
0
|
|
|
|
|
|
S_posix_spawn_failed(aTHX_ PL_sh_path); |
215
|
0
|
|
|
|
|
|
goto leave; |
216
|
|
|
|
|
|
|
} |
217
|
|
|
|
|
|
|
} |
218
|
|
|
|
|
|
|
|
219
|
1
|
50
|
|
|
|
|
Newx(argv, (s - cmd) / 2 + 2, const char*); |
220
|
1
|
|
|
|
|
|
SAVEFREEPV(argv); |
221
|
1
|
|
|
|
|
|
cmd = savepvn(cmd, s-cmd); |
222
|
1
|
|
|
|
|
|
SAVEFREEPV(cmd); |
223
|
1
|
|
|
|
|
|
a = argv; |
224
|
2
|
100
|
|
|
|
|
for (s = cmd; *s;) { |
225
|
1
|
50
|
|
|
|
|
while (isSPACE(*s)) |
226
|
0
|
|
|
|
|
|
s++; |
227
|
1
|
50
|
|
|
|
|
if (*s) |
228
|
1
|
|
|
|
|
|
*(a++) = s; |
229
|
20
|
100
|
|
|
|
|
while (*s && !isSPACE(*s)) |
|
|
50
|
|
|
|
|
|
230
|
19
|
|
|
|
|
|
s++; |
231
|
1
|
50
|
|
|
|
|
if (*s) |
232
|
0
|
|
|
|
|
|
*s++ = '\0'; |
233
|
|
|
|
|
|
|
} |
234
|
1
|
|
|
|
|
|
*a = NULL; |
235
|
1
|
50
|
|
|
|
|
if (argv[0]) { |
236
|
1
|
|
|
|
|
|
PERL_FPU_PRE_EXEC |
237
|
1
|
|
|
|
|
|
pid = do_posix_spawn(argv[0],EXEC_ARGV_CAST(argv)); |
238
|
1
|
|
|
|
|
|
PERL_FPU_POST_EXEC |
239
|
1
|
50
|
|
|
|
|
if (pid) return pid; |
240
|
0
|
0
|
|
|
|
|
if (errno == ENOEXEC) /* for system V NIH syndrome */ |
241
|
0
|
|
|
|
|
|
goto doshell; |
242
|
0
|
|
|
|
|
|
S_posix_spawn_failed(aTHX_ argv[0]); |
243
|
|
|
|
|
|
|
} |
244
|
|
|
|
|
|
|
leave: |
245
|
0
|
|
|
|
|
|
LEAVE; |
246
|
0
|
|
|
|
|
|
return FALSE; |
247
|
|
|
|
|
|
|
} |
248
|
|
|
|
|
|
|
|
249
|
|
|
|
|
|
|
|
250
|
|
|
|
|
|
|
|
251
|
|
|
|
|
|
|
/* borrowed from Perl's pp_sys.c: pp_exec */ |
252
|
|
|
|
|
|
|
XS(XS_POSIX__RT__Spawn_spawn); /* prototype to pass -Wmissing-prototypes */ |
253
|
4
|
|
|
|
|
|
XS(XS_POSIX__RT__Spawn_spawn) { |
254
|
4
|
|
|
|
|
|
dVAR; dSP; dMARK; dORIGMARK; dTARGET; |
255
|
|
|
|
|
|
|
Pid_t pid; |
256
|
|
|
|
|
|
|
|
257
|
4
|
50
|
|
|
|
|
if (PL_tainting) { |
258
|
0
|
0
|
|
|
|
|
TAINT_ENV(); |
259
|
0
|
0
|
|
|
|
|
while (++MARK <= SP) { |
260
|
|
|
|
|
|
|
/* stringify for taint check */ |
261
|
0
|
0
|
|
|
|
|
(void)SvPV_nolen_const(*MARK); |
262
|
0
|
0
|
|
|
|
|
if (PL_tainted) |
263
|
0
|
|
|
|
|
|
break; |
264
|
|
|
|
|
|
|
} |
265
|
0
|
|
|
|
|
|
MARK = ORIGMARK; |
266
|
0
|
0
|
|
|
|
|
TAINT_PROPER("spawn"); |
267
|
|
|
|
|
|
|
} |
268
|
|
|
|
|
|
|
|
269
|
4
|
|
|
|
|
|
PERL_FLUSHALL_FOR_CHILD; |
270
|
|
|
|
|
|
|
|
271
|
|
|
|
|
|
|
/* indirect object syntax */ |
272
|
|
|
|
|
|
|
if (0 && PL_op->op_flags & OPf_STACKED) { |
273
|
|
|
|
|
|
|
SV * const really = *++MARK; |
274
|
|
|
|
|
|
|
pid = do_posix_spawn3(aTHX_ really, MARK, SP); |
275
|
|
|
|
|
|
|
} |
276
|
4
|
100
|
|
|
|
|
else if (SP - MARK != 1) |
277
|
1
|
|
|
|
|
|
pid = do_posix_spawn3(aTHX_ NULL, MARK, SP); |
278
|
|
|
|
|
|
|
else { |
279
|
3
|
50
|
|
|
|
|
pid = do_posix_spawn1(aTHX_ SvPV_nolen(sv_mortalcopy(*SP))); |
280
|
|
|
|
|
|
|
} |
281
|
|
|
|
|
|
|
|
282
|
4
|
|
|
|
|
|
SP = ORIGMARK; |
283
|
4
|
100
|
|
|
|
|
XPUSHi(pid); |
|
|
50
|
|
|
|
|
|
284
|
4
|
|
|
|
|
|
PUTBACK; |
285
|
4
|
|
|
|
|
|
return; |
286
|
|
|
|
|
|
|
} |
287
|
|
|
|
|
|
|
|
288
|
|
|
|
|
|
|
MODULE = POSIX::RT::Spawn PACKAGE = POSIX::RT::Spawn |
289
|
|
|
|
|
|
|
|
290
|
|
|
|
|
|
|
PROTOTYPES: DISABLE |
291
|
|
|
|
|
|
|
|
292
|
|
|
|
|
|
|
BOOT: |
293
|
2
|
|
|
|
|
|
newXS("POSIX::RT::Spawn::spawn", XS_POSIX__RT__Spawn_spawn, __FILE__); |