| 1 | /* Process handling for Windows.
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| 2 | Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
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| 3 | 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
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| 4 | This file is part of GNU Make.
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| 5 |
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| 6 | GNU Make is free software; you can redistribute it and/or modify it under the
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| 7 | terms of the GNU General Public License as published by the Free Software
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| 8 | Foundation; either version 3 of the License, or (at your option) any later
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| 9 | version.
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| 10 |
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| 11 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 13 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License along with
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| 16 | this program. If not, see <http://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #include <config.h>
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| 19 | #include <stdlib.h>
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| 20 | #include <stdio.h>
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| 21 | #ifdef _MSC_VER
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| 22 | # include <stddef.h> /* for intptr_t */
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| 23 | #else
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| 24 | # include <stdint.h>
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| 25 | #endif
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| 26 | #include <process.h> /* for msvc _beginthreadex, _endthreadex */
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| 27 | #include <signal.h>
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| 28 | #include <windows.h>
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| 29 | #ifdef KMK
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| 30 | # include <assert.h>
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| 31 | # include "make.h"
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| 32 | # include "kmkbuiltin.h"
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| 33 | #endif
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| 34 |
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| 35 |
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| 36 | #include "sub_proc.h"
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| 37 | #include "proc.h"
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| 38 | #include "w32err.h"
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| 39 | #include "debug.h"
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| 40 |
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| 41 | static char *make_command_line(char *shell_name, char *exec_path, char **argv);
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| 42 | #ifndef KMK
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| 43 | extern char *xmalloc (unsigned int);
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| 44 | #else
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| 45 | extern void kmk_cache_exec_image(const char *); /* imagecache.c */
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| 46 | #endif
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| 47 |
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| 48 | typedef struct sub_process_t {
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| 49 | #ifdef KMK
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| 50 | enum { kRegular = 0, kSubmit, kSubProcFreed } enmType;
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| 51 | intptr_t clue;
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| 52 | #endif
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| 53 | intptr_t sv_stdin[2];
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| 54 | intptr_t sv_stdout[2];
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| 55 | intptr_t sv_stderr[2];
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| 56 | int using_pipes;
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| 57 | char *inp;
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| 58 | DWORD incnt;
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| 59 | char * volatile outp;
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| 60 | volatile DWORD outcnt;
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| 61 | char * volatile errp;
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| 62 | volatile DWORD errcnt;
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| 63 | pid_t pid;
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| 64 | int exit_code;
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| 65 | int signal;
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| 66 | long last_err;
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| 67 | long lerrno;
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| 68 | } sub_process;
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| 69 |
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| 70 | static long process_file_io_private(sub_process *pproc, BOOL fNeedToWait); /* bird */
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| 71 |
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| 72 | /* keep track of children so we can implement a waitpid-like routine */
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| 73 | static sub_process *proc_array[MAXIMUM_WAIT_OBJECTS];
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| 74 | static int proc_index = 0;
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| 75 | static int fake_exits_pending = 0;
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| 76 |
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| 77 | #ifndef KMK /* Inefficient! */
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| 78 | /*
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| 79 | * When a process has been waited for, adjust the wait state
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| 80 | * array so that we don't wait for it again
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| 81 | */
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| 82 | static void
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| 83 | process_adjust_wait_state(sub_process* pproc)
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| 84 | {
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| 85 | int i;
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| 86 |
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| 87 | if (!proc_index)
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| 88 | return;
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| 89 |
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| 90 | for (i = 0; i < proc_index; i++)
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| 91 | if (proc_array[i]->pid == pproc->pid)
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| 92 | break;
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| 93 |
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| 94 | if (i < proc_index) {
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| 95 | proc_index--;
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| 96 | if (i != proc_index)
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| 97 | memmove(&proc_array[i], &proc_array[i+1],
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| 98 | (proc_index-i) * sizeof(sub_process*));
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| 99 | proc_array[proc_index] = NULL;
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| 100 | }
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| 101 | }
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| 102 | #endif /* !KMK */
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| 103 |
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| 104 | /*
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| 105 | * Waits for any of the registered child processes to finish.
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| 106 | */
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| 107 | static sub_process *
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| 108 | process_wait_for_any_private(void)
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| 109 | {
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| 110 | HANDLE handles[MAXIMUM_WAIT_OBJECTS];
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| 111 | DWORD retval, which;
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| 112 | int i;
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| 113 |
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| 114 | if (!proc_index)
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| 115 | return NULL;
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| 116 |
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| 117 | /* build array of handles to wait for */
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| 118 | for (i = 0; i < proc_index; i++) {
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| 119 | handles[i] = (HANDLE) proc_array[i]->pid;
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| 120 |
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| 121 | if (fake_exits_pending && proc_array[i]->exit_code)
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| 122 | break;
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| 123 | }
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| 124 |
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| 125 | /* wait for someone to exit */
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| 126 | if (!fake_exits_pending) {
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| 127 | #ifdef KMK
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| 128 | l_wait_again:
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| 129 | #endif
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| 130 | retval = WaitForMultipleObjects(proc_index, handles, FALSE, INFINITE);
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| 131 | which = retval - WAIT_OBJECT_0;
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| 132 | } else {
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| 133 | fake_exits_pending--;
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| 134 | retval = !WAIT_FAILED;
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| 135 | which = i;
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| 136 | }
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| 137 |
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| 138 | /* return pointer to process */
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| 139 | if (retval != WAIT_FAILED) {
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| 140 | sub_process* pproc = proc_array[which];
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| 141 | #ifdef KMK
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| 142 | if (pproc->enmType == kSubmit) {
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| 143 | /* Try get the result from kSubmit.c. This may not succeed if the whole
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| 144 | result hasn't arrived yet, in which we just restart the wait. */
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| 145 | if (kSubmitSubProcGetResult(pproc->clue, &pproc->exit_code, &pproc->signal) != 0) {
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| 146 | goto l_wait_again;
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| 147 | }
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| 148 | }
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| 149 | #endif
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| 150 | #ifndef KMK /* Inefficient! */
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| 151 | process_adjust_wait_state(pproc);
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| 152 | #else
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| 153 | proc_index--;
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| 154 | if ((int)which < proc_index)
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| 155 | proc_array[which] = proc_array[proc_index];
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| 156 | proc_array[proc_index] = NULL;
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| 157 | #endif
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| 158 | return pproc;
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| 159 | } else
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| 160 | return NULL;
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| 161 | }
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| 162 |
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| 163 | /*
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| 164 | * Terminate a process.
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| 165 | */
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| 166 | BOOL
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| 167 | process_kill(HANDLE proc, int signal)
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| 168 | {
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| 169 | sub_process* pproc = (sub_process*) proc;
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| 170 | pproc->signal = signal;
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| 171 | #ifdef KMK
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| 172 | if (pproc->enmType == kRegular) {
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| 173 | #endif
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| 174 | return (TerminateProcess((HANDLE) pproc->pid, signal));
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| 175 | #ifdef KMK
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| 176 | } else if (pproc->enmType == kSubmit) {
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| 177 | return kSubmitSubProcKill(pproc->clue, signal) == 0;
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| 178 | }
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| 179 | assert(0);
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| 180 | return FALSE;
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| 181 | #endif
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| 182 | }
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| 183 |
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| 184 | /*
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| 185 | * Use this function to register processes you wish to wait for by
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| 186 | * calling process_file_io(NULL) or process_wait_any(). This must be done
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| 187 | * because it is possible for callers of this library to reuse the same
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| 188 | * handle for multiple processes launches :-(
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| 189 | */
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| 190 | void
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| 191 | process_register(HANDLE proc)
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| 192 | {
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| 193 | #ifdef KMK
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| 194 | assert(((sub_process *)proc)->enmType == kRegular);
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| 195 | #endif
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| 196 | if (proc_index < MAXIMUM_WAIT_OBJECTS)
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| 197 | proc_array[proc_index++] = (sub_process *) proc;
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| 198 | }
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| 199 |
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| 200 | #ifdef KMK
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| 201 | /**
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| 202 | * Interface used by kmkbuiltin/kSubmit.c to register stuff going down in a
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| 203 | * worker process.
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| 204 | *
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| 205 | * @returns 0 on success, -1 if there are too many sub-processes already.
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| 206 | * @param hEvent The event semaphore to wait on.
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| 207 | * @param clue The clue to base.
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| 208 | */
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| 209 | int
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| 210 | process_kmk_register_submit(HANDLE hEvent, intptr_t clue)
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| 211 | {
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| 212 | if (proc_index < MAXIMUM_WAIT_OBJECTS) {
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| 213 | sub_process *pSubProc = (sub_process *)xcalloc(sizeof(*pSubProc));
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| 214 | pSubProc->enmType = kSubmit;
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| 215 | pSubProc->clue = clue;
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| 216 | pSubProc->pid = (intptr_t)hEvent;
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| 217 |
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| 218 | proc_array[proc_index++] = pSubProc;
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| 219 | return 0;
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| 220 | }
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| 221 | return -1;
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| 222 | }
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| 223 | #endif
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| 224 |
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| 225 | /*
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| 226 | * Return the number of processes that we are still waiting for.
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| 227 | */
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| 228 | int
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| 229 | process_used_slots(void)
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| 230 | {
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| 231 | return proc_index;
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| 232 | }
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| 233 |
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| 234 | /*
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| 235 | * Public function which works kind of like waitpid(). Wait for any
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| 236 | * of the children to die and return results. To call this function,
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| 237 | * you must do 1 of things:
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| 238 | *
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| 239 | * x = process_easy(...);
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| 240 | *
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| 241 | * or
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| 242 | *
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| 243 | * x = process_init_fd();
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| 244 | * process_register(x);
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| 245 | *
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| 246 | * or
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| 247 | *
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| 248 | * x = process_init();
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| 249 | * process_register(x);
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| 250 | *
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| 251 | * You must NOT then call process_pipe_io() because this function is
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| 252 | * not capable of handling automatic notification of any child
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| 253 | * death.
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| 254 | */
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| 255 |
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| 256 | HANDLE
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| 257 | process_wait_for_any(void)
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| 258 | {
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| 259 | sub_process* pproc = process_wait_for_any_private();
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| 260 |
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| 261 | if (!pproc)
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| 262 | return NULL;
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| 263 | else {
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| 264 | /*
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| 265 | * Ouch! can't tell caller if this fails directly. Caller
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| 266 | * will have to use process_last_err()
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| 267 | */
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| 268 | #ifdef KMK
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| 269 | if (pproc->enmType == kRegular) {
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| 270 | (void)process_file_io_private(pproc, FALSE);
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| 271 | }
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| 272 | #else
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| 273 | (void) process_file_io(pproc);
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| 274 | #endif
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| 275 | return ((HANDLE) pproc);
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| 276 | }
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| 277 | }
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| 278 |
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| 279 | long
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| 280 | process_signal(HANDLE proc)
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| 281 | {
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| 282 | if (proc == INVALID_HANDLE_VALUE) return 0;
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| 283 | return (((sub_process *)proc)->signal);
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| 284 | }
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| 285 |
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| 286 | long
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| 287 | process_last_err(HANDLE proc)
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| 288 | {
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| 289 | if (proc == INVALID_HANDLE_VALUE) return ERROR_INVALID_HANDLE;
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| 290 | return (((sub_process *)proc)->last_err);
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| 291 | }
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| 292 |
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| 293 | long
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| 294 | process_exit_code(HANDLE proc)
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| 295 | {
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| 296 | if (proc == INVALID_HANDLE_VALUE) return EXIT_FAILURE;
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| 297 | return (((sub_process *)proc)->exit_code);
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| 298 | }
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| 299 |
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| 300 | /*
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| 301 | 2006-02:
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| 302 | All the following functions are currently unused.
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| 303 | All of them would crash gmake if called with argument INVALID_HANDLE_VALUE.
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| 304 | Hence whoever wants to use one of this functions must invent and implement
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| 305 | a reasonable error handling for this function.
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| 306 |
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| 307 | char *
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| 308 | process_outbuf(HANDLE proc)
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| 309 | {
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| 310 | return (((sub_process *)proc)->outp);
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| 311 | }
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| 312 |
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| 313 | char *
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| 314 | process_errbuf(HANDLE proc)
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| 315 | {
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| 316 | return (((sub_process *)proc)->errp);
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| 317 | }
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| 318 |
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| 319 | int
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| 320 | process_outcnt(HANDLE proc)
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| 321 | {
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| 322 | return (((sub_process *)proc)->outcnt);
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| 323 | }
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| 324 |
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| 325 | int
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| 326 | process_errcnt(HANDLE proc)
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| 327 | {
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| 328 | return (((sub_process *)proc)->errcnt);
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| 329 | }
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| 330 |
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| 331 | void
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| 332 | process_pipes(HANDLE proc, int pipes[3])
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| 333 | {
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| 334 | pipes[0] = ((sub_process *)proc)->sv_stdin[0];
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| 335 | pipes[1] = ((sub_process *)proc)->sv_stdout[0];
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| 336 | pipes[2] = ((sub_process *)proc)->sv_stderr[0];
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| 337 | return;
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| 338 | }
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| 339 | */
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| 340 |
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| 341 | HANDLE
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| 342 | process_init()
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| 343 | {
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| 344 | sub_process *pproc;
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| 345 | /*
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| 346 | * open file descriptors for attaching stdin/stdout/sterr
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| 347 | */
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| 348 | HANDLE stdin_pipes[2];
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| 349 | HANDLE stdout_pipes[2];
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| 350 | HANDLE stderr_pipes[2];
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| 351 | SECURITY_ATTRIBUTES inherit;
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| 352 | BYTE sd[SECURITY_DESCRIPTOR_MIN_LENGTH];
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| 353 |
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| 354 | pproc = malloc(sizeof(*pproc));
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| 355 | memset(pproc, 0, sizeof(*pproc));
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| 356 |
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| 357 | /* We can't use NULL for lpSecurityDescriptor because that
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| 358 | uses the default security descriptor of the calling process.
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| 359 | Instead we use a security descriptor with no DACL. This
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| 360 | allows nonrestricted access to the associated objects. */
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| 361 |
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| 362 | if (!InitializeSecurityDescriptor((PSECURITY_DESCRIPTOR)(&sd),
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| 363 | SECURITY_DESCRIPTOR_REVISION)) {
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| 364 | pproc->last_err = GetLastError();
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| 365 | pproc->lerrno = E_SCALL;
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| 366 | return((HANDLE)pproc);
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| 367 | }
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| 368 |
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| 369 | inherit.nLength = sizeof(inherit);
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| 370 | inherit.lpSecurityDescriptor = (PSECURITY_DESCRIPTOR)(&sd);
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| 371 | inherit.bInheritHandle = TRUE;
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| 372 |
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| 373 | // By convention, parent gets pipe[0], and child gets pipe[1]
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| 374 | // This means the READ side of stdin pipe goes into pipe[1]
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| 375 | // and the WRITE side of the stdout and stderr pipes go into pipe[1]
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| 376 | if (CreatePipe( &stdin_pipes[1], &stdin_pipes[0], &inherit, 0) == FALSE ||
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| 377 | CreatePipe( &stdout_pipes[0], &stdout_pipes[1], &inherit, 0) == FALSE ||
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| 378 | CreatePipe( &stderr_pipes[0], &stderr_pipes[1], &inherit, 0) == FALSE) {
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| 379 |
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| 380 | pproc->last_err = GetLastError();
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| 381 | pproc->lerrno = E_SCALL;
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| 382 | return((HANDLE)pproc);
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| 383 | }
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| 384 |
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| 385 | //
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| 386 | // Mark the parent sides of the pipes as non-inheritable
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| 387 | //
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| 388 | if (SetHandleInformation(stdin_pipes[0],
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| 389 | HANDLE_FLAG_INHERIT, 0) == FALSE ||
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| 390 | SetHandleInformation(stdout_pipes[0],
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| 391 | HANDLE_FLAG_INHERIT, 0) == FALSE ||
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| 392 | SetHandleInformation(stderr_pipes[0],
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| 393 | HANDLE_FLAG_INHERIT, 0) == FALSE) {
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| 394 |
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| 395 | pproc->last_err = GetLastError();
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| 396 | pproc->lerrno = E_SCALL;
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| 397 | return((HANDLE)pproc);
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| 398 | }
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| 399 | pproc->sv_stdin[0] = (intptr_t) stdin_pipes[0];
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| 400 | pproc->sv_stdin[1] = (intptr_t) stdin_pipes[1];
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| 401 | pproc->sv_stdout[0] = (intptr_t) stdout_pipes[0];
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| 402 | pproc->sv_stdout[1] = (intptr_t) stdout_pipes[1];
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| 403 | pproc->sv_stderr[0] = (intptr_t) stderr_pipes[0];
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| 404 | pproc->sv_stderr[1] = (intptr_t) stderr_pipes[1];
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| 405 |
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| 406 | pproc->using_pipes = 1;
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| 407 |
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| 408 | pproc->lerrno = 0;
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| 409 |
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| 410 | return((HANDLE)pproc);
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| 411 | }
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| 412 |
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| 413 |
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| 414 | HANDLE
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| 415 | process_init_fd(HANDLE stdinh, HANDLE stdouth, HANDLE stderrh)
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| 416 | {
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| 417 | sub_process *pproc;
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| 418 |
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| 419 | pproc = malloc(sizeof(*pproc));
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| 420 | memset(pproc, 0, sizeof(*pproc));
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| 421 |
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| 422 | /*
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| 423 | * Just pass the provided file handles to the 'child side' of the
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| 424 | * pipe, bypassing pipes altogether.
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| 425 | */
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| 426 | pproc->sv_stdin[1] = (intptr_t) stdinh;
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|---|
| 427 | pproc->sv_stdout[1] = (intptr_t) stdouth;
|
|---|
| 428 | pproc->sv_stderr[1] = (intptr_t) stderrh;
|
|---|
| 429 |
|
|---|
| 430 | pproc->last_err = pproc->lerrno = 0;
|
|---|
| 431 |
|
|---|
| 432 | return((HANDLE)pproc);
|
|---|
| 433 | }
|
|---|
| 434 |
|
|---|
| 435 |
|
|---|
| 436 | static HANDLE
|
|---|
| 437 | find_file(const char *exec_path, const char *path_var,
|
|---|
| 438 | char *full_fname, DWORD full_len)
|
|---|
| 439 | {
|
|---|
| 440 | HANDLE exec_handle;
|
|---|
| 441 | char *fname;
|
|---|
| 442 | char *ext;
|
|---|
| 443 | DWORD req_len;
|
|---|
| 444 | int i;
|
|---|
| 445 | static const char *extensions[] =
|
|---|
| 446 | /* Should .com come before no-extension case? */
|
|---|
| 447 | { ".exe", ".cmd", ".bat", "", ".com", NULL };
|
|---|
| 448 |
|
|---|
| 449 | fname = xmalloc(strlen(exec_path) + 5);
|
|---|
| 450 | strcpy(fname, exec_path);
|
|---|
| 451 | ext = fname + strlen(fname);
|
|---|
| 452 |
|
|---|
| 453 | for (i = 0; extensions[i]; i++) {
|
|---|
| 454 | strcpy(ext, extensions[i]);
|
|---|
| 455 | if (((req_len = SearchPath (path_var, fname, NULL, full_len,
|
|---|
| 456 | full_fname, NULL)) > 0
|
|---|
| 457 | /* For compatibility with previous code, which
|
|---|
| 458 | used OpenFile, and with Windows operation in
|
|---|
| 459 | general, also look in various default
|
|---|
| 460 | locations, such as Windows directory and
|
|---|
| 461 | Windows System directory. Warning: this also
|
|---|
| 462 | searches PATH in the Make's environment, which
|
|---|
| 463 | might not be what the Makefile wants, but it
|
|---|
| 464 | seems to be OK as a fallback, after the
|
|---|
| 465 | previous SearchPath failed to find on child's
|
|---|
| 466 | PATH. */
|
|---|
| 467 | || (req_len = SearchPath (NULL, fname, NULL, full_len,
|
|---|
| 468 | full_fname, NULL)) > 0)
|
|---|
| 469 | && req_len <= full_len
|
|---|
| 470 | && (exec_handle =
|
|---|
| 471 | CreateFile(full_fname,
|
|---|
| 472 | GENERIC_READ,
|
|---|
| 473 | FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|---|
| 474 | NULL,
|
|---|
| 475 | OPEN_EXISTING,
|
|---|
| 476 | FILE_ATTRIBUTE_NORMAL,
|
|---|
| 477 | NULL)) != INVALID_HANDLE_VALUE) {
|
|---|
| 478 | free(fname);
|
|---|
| 479 | return(exec_handle);
|
|---|
| 480 | }
|
|---|
| 481 | }
|
|---|
| 482 |
|
|---|
| 483 | free(fname);
|
|---|
| 484 | return INVALID_HANDLE_VALUE;
|
|---|
| 485 | }
|
|---|
| 486 |
|
|---|
| 487 |
|
|---|
| 488 | /*
|
|---|
| 489 | * Description: Create the child process to be helped
|
|---|
| 490 | *
|
|---|
| 491 | * Returns: success <=> 0
|
|---|
| 492 | *
|
|---|
| 493 | * Notes/Dependencies:
|
|---|
| 494 | */
|
|---|
| 495 | long
|
|---|
| 496 | process_begin(
|
|---|
| 497 | HANDLE proc,
|
|---|
| 498 | char **argv,
|
|---|
| 499 | char **envp,
|
|---|
| 500 | char *exec_path,
|
|---|
| 501 | char *as_user)
|
|---|
| 502 | {
|
|---|
| 503 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 504 | char *shell_name = 0;
|
|---|
| 505 | int file_not_found=0;
|
|---|
| 506 | HANDLE exec_handle;
|
|---|
| 507 | char exec_fname[MAX_PATH];
|
|---|
| 508 | const char *path_var = NULL;
|
|---|
| 509 | char **ep;
|
|---|
| 510 | char buf[256];
|
|---|
| 511 | DWORD bytes_returned;
|
|---|
| 512 | DWORD flags;
|
|---|
| 513 | char *command_line;
|
|---|
| 514 | STARTUPINFO startInfo;
|
|---|
| 515 | PROCESS_INFORMATION procInfo;
|
|---|
| 516 | char *envblk=NULL;
|
|---|
| 517 | #ifdef KMK
|
|---|
| 518 | size_t exec_path_len;
|
|---|
| 519 |
|
|---|
| 520 | assert (pproc->enmType == kRegular);
|
|---|
| 521 | #endif
|
|---|
| 522 |
|
|---|
| 523 |
|
|---|
| 524 | /*
|
|---|
| 525 | * Shell script detection... if the exec_path starts with #! then
|
|---|
| 526 | * we want to exec shell-script-name exec-path, not just exec-path
|
|---|
| 527 | * NT doesn't recognize #!/bin/sh or #!/etc/Tivoli/bin/perl. We do not
|
|---|
| 528 | * hard-code the path to the shell or perl or whatever: Instead, we
|
|---|
| 529 | * assume it's in the path somewhere (generally, the NT tools
|
|---|
| 530 | * bin directory)
|
|---|
| 531 | */
|
|---|
| 532 |
|
|---|
| 533 | #ifdef KMK
|
|---|
| 534 | /* kmk performance: Don't bother looking for shell scripts in .exe files. */
|
|---|
| 535 | exec_path_len = strlen(exec_path);
|
|---|
| 536 | if (exec_path_len > 4
|
|---|
| 537 | && exec_path[exec_path_len - 4] == '.'
|
|---|
| 538 | && !stricmp(exec_path + exec_path_len - 3, "exe")) {
|
|---|
| 539 | exec_handle = INVALID_HANDLE_VALUE;
|
|---|
| 540 | exec_fname[0] = '\0';
|
|---|
| 541 | }
|
|---|
| 542 | else {
|
|---|
| 543 | #endif /* KMK */
|
|---|
| 544 | /* Use the Makefile's value of PATH to look for the program to
|
|---|
| 545 | execute, because it could be different from Make's PATH
|
|---|
| 546 | (e.g., if the target sets its own value. */
|
|---|
| 547 | if (envp)
|
|---|
| 548 | for (ep = envp; *ep; ep++) {
|
|---|
| 549 | if (strncmp (*ep, "PATH=", 5) == 0
|
|---|
| 550 | || strncmp (*ep, "Path=", 5) == 0) {
|
|---|
| 551 | path_var = *ep + 5;
|
|---|
| 552 | break;
|
|---|
| 553 | }
|
|---|
| 554 | }
|
|---|
| 555 | exec_handle = find_file(exec_path, path_var,
|
|---|
| 556 | exec_fname, sizeof(exec_fname));
|
|---|
| 557 | #ifdef KMK
|
|---|
| 558 | }
|
|---|
| 559 | #endif
|
|---|
| 560 |
|
|---|
| 561 | /*
|
|---|
| 562 | * If we couldn't open the file, just assume that Windows will be
|
|---|
| 563 | * somehow able to find and execute it.
|
|---|
| 564 | */
|
|---|
| 565 | if (exec_handle == INVALID_HANDLE_VALUE) {
|
|---|
| 566 | file_not_found++;
|
|---|
| 567 | }
|
|---|
| 568 | else {
|
|---|
| 569 | /* Attempt to read the first line of the file */
|
|---|
| 570 | if (ReadFile( exec_handle,
|
|---|
| 571 | buf, sizeof(buf) - 1, /* leave room for trailing NULL */
|
|---|
| 572 | &bytes_returned, 0) == FALSE || bytes_returned < 2) {
|
|---|
| 573 |
|
|---|
| 574 | pproc->last_err = GetLastError();
|
|---|
| 575 | pproc->lerrno = E_IO;
|
|---|
| 576 | CloseHandle(exec_handle);
|
|---|
| 577 | return(-1);
|
|---|
| 578 | }
|
|---|
| 579 | if (buf[0] == '#' && buf[1] == '!') {
|
|---|
| 580 | /*
|
|---|
| 581 | * This is a shell script... Change the command line from
|
|---|
| 582 | * exec_path args to shell_name exec_path args
|
|---|
| 583 | */
|
|---|
| 584 | char *p;
|
|---|
| 585 |
|
|---|
| 586 | /* Make sure buf is NULL terminated */
|
|---|
| 587 | buf[bytes_returned] = 0;
|
|---|
| 588 | /*
|
|---|
| 589 | * Depending on the file system type, etc. the first line
|
|---|
| 590 | * of the shell script may end with newline or newline-carriage-return
|
|---|
| 591 | * Whatever it ends with, cut it off.
|
|---|
| 592 | */
|
|---|
| 593 | p= strchr(buf, '\n');
|
|---|
| 594 | if (p)
|
|---|
| 595 | *p = 0;
|
|---|
| 596 | p = strchr(buf, '\r');
|
|---|
| 597 | if (p)
|
|---|
| 598 | *p = 0;
|
|---|
| 599 |
|
|---|
| 600 | /*
|
|---|
| 601 | * Find base name of shell
|
|---|
| 602 | */
|
|---|
| 603 | shell_name = strrchr( buf, '/');
|
|---|
| 604 | if (shell_name) {
|
|---|
| 605 | shell_name++;
|
|---|
| 606 | } else {
|
|---|
| 607 | shell_name = &buf[2];/* skipping "#!" */
|
|---|
| 608 | }
|
|---|
| 609 |
|
|---|
| 610 | }
|
|---|
| 611 | CloseHandle(exec_handle);
|
|---|
| 612 | }
|
|---|
| 613 |
|
|---|
| 614 | flags = 0;
|
|---|
| 615 |
|
|---|
| 616 | if (file_not_found)
|
|---|
| 617 | command_line = make_command_line( shell_name, exec_path, argv);
|
|---|
| 618 | else
|
|---|
| 619 | command_line = make_command_line( shell_name, exec_fname, argv);
|
|---|
| 620 |
|
|---|
| 621 | if ( command_line == NULL ) {
|
|---|
| 622 | pproc->last_err = 0;
|
|---|
| 623 | pproc->lerrno = E_NO_MEM;
|
|---|
| 624 | return(-1);
|
|---|
| 625 | }
|
|---|
| 626 |
|
|---|
| 627 | if (envp) {
|
|---|
| 628 | if (arr2envblk(envp, &envblk) ==FALSE) {
|
|---|
| 629 | pproc->last_err = 0;
|
|---|
| 630 | pproc->lerrno = E_NO_MEM;
|
|---|
| 631 | free( command_line );
|
|---|
| 632 | return(-1);
|
|---|
| 633 | }
|
|---|
| 634 | }
|
|---|
| 635 |
|
|---|
| 636 | if ((shell_name) || (file_not_found)) {
|
|---|
| 637 | exec_path = 0; /* Search for the program in %Path% */
|
|---|
| 638 | } else {
|
|---|
| 639 | exec_path = exec_fname;
|
|---|
| 640 | }
|
|---|
| 641 |
|
|---|
| 642 | /*
|
|---|
| 643 | * Set up inherited stdin, stdout, stderr for child
|
|---|
| 644 | */
|
|---|
| 645 | GetStartupInfo(&startInfo);
|
|---|
| 646 | #ifndef KMK
|
|---|
| 647 | startInfo.dwFlags = STARTF_USESTDHANDLES;
|
|---|
| 648 | #endif
|
|---|
| 649 | startInfo.lpReserved = 0;
|
|---|
| 650 | startInfo.cbReserved2 = 0;
|
|---|
| 651 | startInfo.lpReserved2 = 0;
|
|---|
| 652 | startInfo.lpTitle = shell_name ? shell_name : exec_path;
|
|---|
| 653 | #ifndef KMK
|
|---|
| 654 | startInfo.hStdInput = (HANDLE)pproc->sv_stdin[1];
|
|---|
| 655 | startInfo.hStdOutput = (HANDLE)pproc->sv_stdout[1];
|
|---|
| 656 | startInfo.hStdError = (HANDLE)pproc->sv_stderr[1];
|
|---|
| 657 | #else
|
|---|
| 658 | if ( pproc->sv_stdin[1]
|
|---|
| 659 | || pproc->sv_stdout[1]
|
|---|
| 660 | || pproc->sv_stderr[1]) {
|
|---|
| 661 | startInfo.dwFlags = STARTF_USESTDHANDLES;
|
|---|
| 662 | startInfo.hStdInput = (HANDLE)pproc->sv_stdin[1];
|
|---|
| 663 | startInfo.hStdOutput = (HANDLE)pproc->sv_stdout[1];
|
|---|
| 664 | startInfo.hStdError = (HANDLE)pproc->sv_stderr[1];
|
|---|
| 665 | } else {
|
|---|
| 666 | startInfo.dwFlags = 0;
|
|---|
| 667 | startInfo.hStdInput = 0;
|
|---|
| 668 | startInfo.hStdOutput = 0;
|
|---|
| 669 | startInfo.hStdError = 0;
|
|---|
| 670 | }
|
|---|
| 671 | #endif
|
|---|
| 672 |
|
|---|
| 673 | if (as_user) {
|
|---|
| 674 | if (envblk) free(envblk);
|
|---|
| 675 | return -1;
|
|---|
| 676 | } else {
|
|---|
| 677 | DB (DB_JOBS, ("CreateProcess(%s,%s,...)\n",
|
|---|
| 678 | exec_path ? exec_path : "NULL",
|
|---|
| 679 | command_line ? command_line : "NULL"));
|
|---|
| 680 | #ifdef KMK
|
|---|
| 681 | if (exec_fname[0])
|
|---|
| 682 | kmk_cache_exec_image(exec_fname);
|
|---|
| 683 | else if (exec_path)
|
|---|
| 684 | kmk_cache_exec_image(exec_path);
|
|---|
| 685 | else if (argv[0])
|
|---|
| 686 | kmk_cache_exec_image(argv[0]);
|
|---|
| 687 | #endif
|
|---|
| 688 | if (CreateProcess(
|
|---|
| 689 | exec_path,
|
|---|
| 690 | command_line,
|
|---|
| 691 | NULL,
|
|---|
| 692 | 0, /* default security attributes for thread */
|
|---|
| 693 | TRUE, /* inherit handles (e.g. helper pipes, oserv socket) */
|
|---|
| 694 | flags,
|
|---|
| 695 | envblk,
|
|---|
| 696 | 0, /* default starting directory */
|
|---|
| 697 | &startInfo,
|
|---|
| 698 | &procInfo) == FALSE) {
|
|---|
| 699 |
|
|---|
| 700 | pproc->last_err = GetLastError();
|
|---|
| 701 | pproc->lerrno = E_FORK;
|
|---|
| 702 | #ifdef KMK
|
|---|
| 703 | if (pproc->last_err == ERROR_FILE_NOT_FOUND)
|
|---|
| 704 | pproc->exit_code = 127; /* see execve failure in job.c. */
|
|---|
| 705 | #endif
|
|---|
| 706 | fprintf(stderr, "process_begin: CreateProcess(%s, %s, ...) failed.\n",
|
|---|
| 707 | exec_path ? exec_path : "NULL", command_line);
|
|---|
| 708 | if (envblk) free(envblk);
|
|---|
| 709 | free( command_line );
|
|---|
| 710 | return(-1);
|
|---|
| 711 | }
|
|---|
| 712 | }
|
|---|
| 713 |
|
|---|
| 714 | pproc->pid = (pid_t)procInfo.hProcess;
|
|---|
| 715 | /* Close the thread handle -- we'll just watch the process */
|
|---|
| 716 | CloseHandle(procInfo.hThread);
|
|---|
| 717 |
|
|---|
| 718 | /* Close the halves of the pipes we don't need */
|
|---|
| 719 | #ifndef KMK
|
|---|
| 720 | CloseHandle((HANDLE)pproc->sv_stdin[1]);
|
|---|
| 721 | CloseHandle((HANDLE)pproc->sv_stdout[1]);
|
|---|
| 722 | CloseHandle((HANDLE)pproc->sv_stderr[1]);
|
|---|
| 723 | pproc->sv_stdin[1] = 0;
|
|---|
| 724 | pproc->sv_stdout[1] = 0;
|
|---|
| 725 | pproc->sv_stderr[1] = 0;
|
|---|
| 726 | #else
|
|---|
| 727 | if ((HANDLE)pproc->sv_stdin[1]) {
|
|---|
| 728 | CloseHandle((HANDLE)pproc->sv_stdin[1]);
|
|---|
| 729 | pproc->sv_stdin[1] = 0;
|
|---|
| 730 | }
|
|---|
| 731 | if ((HANDLE)pproc->sv_stdout[1]) {
|
|---|
| 732 | CloseHandle((HANDLE)pproc->sv_stdout[1]);
|
|---|
| 733 | pproc->sv_stdout[1] = 0;
|
|---|
| 734 | }
|
|---|
| 735 | if ((HANDLE)pproc->sv_stderr[1]) {
|
|---|
| 736 | CloseHandle((HANDLE)pproc->sv_stderr[1]);
|
|---|
| 737 | pproc->sv_stderr[1] = 0;
|
|---|
| 738 | }
|
|---|
| 739 | #endif
|
|---|
| 740 |
|
|---|
| 741 | free( command_line );
|
|---|
| 742 | if (envblk) free(envblk);
|
|---|
| 743 | pproc->lerrno=0;
|
|---|
| 744 | return 0;
|
|---|
| 745 | }
|
|---|
| 746 |
|
|---|
| 747 |
|
|---|
| 748 |
|
|---|
| 749 | static DWORD
|
|---|
| 750 | proc_stdin_thread(sub_process *pproc)
|
|---|
| 751 | {
|
|---|
| 752 | DWORD in_done;
|
|---|
| 753 | for (;;) {
|
|---|
| 754 | if (WriteFile( (HANDLE) pproc->sv_stdin[0], pproc->inp, pproc->incnt,
|
|---|
| 755 | &in_done, NULL) == FALSE)
|
|---|
| 756 | _endthreadex(0);
|
|---|
| 757 | // This if should never be true for anonymous pipes, but gives
|
|---|
| 758 | // us a chance to change I/O mechanisms later
|
|---|
| 759 | if (in_done < pproc->incnt) {
|
|---|
| 760 | pproc->incnt -= in_done;
|
|---|
| 761 | pproc->inp += in_done;
|
|---|
| 762 | } else {
|
|---|
| 763 | _endthreadex(0);
|
|---|
| 764 | }
|
|---|
| 765 | }
|
|---|
| 766 | return 0; // for compiler warnings only.. not reached
|
|---|
| 767 | }
|
|---|
| 768 |
|
|---|
| 769 | static DWORD
|
|---|
| 770 | proc_stdout_thread(sub_process *pproc)
|
|---|
| 771 | {
|
|---|
| 772 | DWORD bufsize = 1024;
|
|---|
| 773 | char c;
|
|---|
| 774 | DWORD nread;
|
|---|
| 775 | pproc->outp = malloc(bufsize);
|
|---|
| 776 | if (pproc->outp == NULL)
|
|---|
| 777 | _endthreadex(0);
|
|---|
| 778 | pproc->outcnt = 0;
|
|---|
| 779 |
|
|---|
| 780 | for (;;) {
|
|---|
| 781 | if (ReadFile( (HANDLE)pproc->sv_stdout[0], &c, 1, &nread, NULL)
|
|---|
| 782 | == FALSE) {
|
|---|
| 783 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 784 | _endthreadex(0);
|
|---|
| 785 | }
|
|---|
| 786 | if (nread == 0)
|
|---|
| 787 | _endthreadex(0);
|
|---|
| 788 | if (pproc->outcnt + nread > bufsize) {
|
|---|
| 789 | bufsize += nread + 512;
|
|---|
| 790 | pproc->outp = realloc(pproc->outp, bufsize);
|
|---|
| 791 | if (pproc->outp == NULL) {
|
|---|
| 792 | pproc->outcnt = 0;
|
|---|
| 793 | _endthreadex(0);
|
|---|
| 794 | }
|
|---|
| 795 | }
|
|---|
| 796 | pproc->outp[pproc->outcnt++] = c;
|
|---|
| 797 | }
|
|---|
| 798 | return 0;
|
|---|
| 799 | }
|
|---|
| 800 |
|
|---|
| 801 | static DWORD
|
|---|
| 802 | proc_stderr_thread(sub_process *pproc)
|
|---|
| 803 | {
|
|---|
| 804 | DWORD bufsize = 1024;
|
|---|
| 805 | char c;
|
|---|
| 806 | DWORD nread;
|
|---|
| 807 | pproc->errp = malloc(bufsize);
|
|---|
| 808 | if (pproc->errp == NULL)
|
|---|
| 809 | _endthreadex(0);
|
|---|
| 810 | pproc->errcnt = 0;
|
|---|
| 811 |
|
|---|
| 812 | for (;;) {
|
|---|
| 813 | if (ReadFile( (HANDLE)pproc->sv_stderr[0], &c, 1, &nread, NULL) == FALSE) {
|
|---|
| 814 | map_windows32_error_to_string(GetLastError());
|
|---|
| 815 | _endthreadex(0);
|
|---|
| 816 | }
|
|---|
| 817 | if (nread == 0)
|
|---|
| 818 | _endthreadex(0);
|
|---|
| 819 | if (pproc->errcnt + nread > bufsize) {
|
|---|
| 820 | bufsize += nread + 512;
|
|---|
| 821 | pproc->errp = realloc(pproc->errp, bufsize);
|
|---|
| 822 | if (pproc->errp == NULL) {
|
|---|
| 823 | pproc->errcnt = 0;
|
|---|
| 824 | _endthreadex(0);
|
|---|
| 825 | }
|
|---|
| 826 | }
|
|---|
| 827 | pproc->errp[pproc->errcnt++] = c;
|
|---|
| 828 | }
|
|---|
| 829 | return 0;
|
|---|
| 830 | }
|
|---|
| 831 |
|
|---|
| 832 |
|
|---|
| 833 | /*
|
|---|
| 834 | * Purpose: collects output from child process and returns results
|
|---|
| 835 | *
|
|---|
| 836 | * Description:
|
|---|
| 837 | *
|
|---|
| 838 | * Returns:
|
|---|
| 839 | *
|
|---|
| 840 | * Notes/Dependencies:
|
|---|
| 841 | */
|
|---|
| 842 | long
|
|---|
| 843 | process_pipe_io(
|
|---|
| 844 | HANDLE proc,
|
|---|
| 845 | char *stdin_data,
|
|---|
| 846 | int stdin_data_len)
|
|---|
| 847 | {
|
|---|
| 848 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 849 | bool_t stdin_eof = FALSE, stdout_eof = FALSE, stderr_eof = FALSE;
|
|---|
| 850 | HANDLE childhand = (HANDLE) pproc->pid;
|
|---|
| 851 | HANDLE tStdin = NULL, tStdout = NULL, tStderr = NULL;
|
|---|
| 852 | unsigned int dwStdin, dwStdout, dwStderr;
|
|---|
| 853 | HANDLE wait_list[4];
|
|---|
| 854 | DWORD wait_count;
|
|---|
| 855 | DWORD wait_return;
|
|---|
| 856 | HANDLE ready_hand;
|
|---|
| 857 | bool_t child_dead = FALSE;
|
|---|
| 858 | BOOL GetExitCodeResult;
|
|---|
| 859 | #ifdef KMK
|
|---|
| 860 | assert (pproc->enmType == kRegular);
|
|---|
| 861 | #endif
|
|---|
| 862 |
|
|---|
| 863 | /*
|
|---|
| 864 | * Create stdin thread, if needed
|
|---|
| 865 | */
|
|---|
| 866 | pproc->inp = stdin_data;
|
|---|
| 867 | pproc->incnt = stdin_data_len;
|
|---|
| 868 | if (!pproc->inp) {
|
|---|
| 869 | stdin_eof = TRUE;
|
|---|
| 870 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 871 | pproc->sv_stdin[0] = 0;
|
|---|
| 872 | } else {
|
|---|
| 873 | tStdin = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 874 | (unsigned (__stdcall *) (void *))proc_stdin_thread,
|
|---|
| 875 | pproc, 0, &dwStdin);
|
|---|
| 876 | if (tStdin == 0) {
|
|---|
| 877 | pproc->last_err = GetLastError();
|
|---|
| 878 | pproc->lerrno = E_SCALL;
|
|---|
| 879 | goto done;
|
|---|
| 880 | }
|
|---|
| 881 | }
|
|---|
| 882 |
|
|---|
| 883 | /*
|
|---|
| 884 | * Assume child will produce stdout and stderr
|
|---|
| 885 | */
|
|---|
| 886 | tStdout = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 887 | (unsigned (__stdcall *) (void *))proc_stdout_thread, pproc, 0,
|
|---|
| 888 | &dwStdout);
|
|---|
| 889 | tStderr = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 890 | (unsigned (__stdcall *) (void *))proc_stderr_thread, pproc, 0,
|
|---|
| 891 | &dwStderr);
|
|---|
| 892 |
|
|---|
| 893 | if (tStdout == 0 || tStderr == 0) {
|
|---|
| 894 |
|
|---|
| 895 | pproc->last_err = GetLastError();
|
|---|
| 896 | pproc->lerrno = E_SCALL;
|
|---|
| 897 | goto done;
|
|---|
| 898 | }
|
|---|
| 899 |
|
|---|
| 900 |
|
|---|
| 901 | /*
|
|---|
| 902 | * Wait for all I/O to finish and for the child process to exit
|
|---|
| 903 | */
|
|---|
| 904 |
|
|---|
| 905 | while (!stdin_eof || !stdout_eof || !stderr_eof || !child_dead) {
|
|---|
| 906 | wait_count = 0;
|
|---|
| 907 | if (!stdin_eof) {
|
|---|
| 908 | wait_list[wait_count++] = tStdin;
|
|---|
| 909 | }
|
|---|
| 910 | if (!stdout_eof) {
|
|---|
| 911 | wait_list[wait_count++] = tStdout;
|
|---|
| 912 | }
|
|---|
| 913 | if (!stderr_eof) {
|
|---|
| 914 | wait_list[wait_count++] = tStderr;
|
|---|
| 915 | }
|
|---|
| 916 | if (!child_dead) {
|
|---|
| 917 | wait_list[wait_count++] = childhand;
|
|---|
| 918 | }
|
|---|
| 919 |
|
|---|
| 920 | wait_return = WaitForMultipleObjects(wait_count, wait_list,
|
|---|
| 921 | FALSE, /* don't wait for all: one ready will do */
|
|---|
| 922 | child_dead? 1000 :INFINITE); /* after the child dies, subthreads have
|
|---|
| 923 | one second to collect all remaining output */
|
|---|
| 924 |
|
|---|
| 925 | if (wait_return == WAIT_FAILED) {
|
|---|
| 926 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 927 | pproc->last_err = GetLastError();
|
|---|
| 928 | pproc->lerrno = E_SCALL;
|
|---|
| 929 | goto done;
|
|---|
| 930 | }
|
|---|
| 931 |
|
|---|
| 932 | ready_hand = wait_list[wait_return - WAIT_OBJECT_0];
|
|---|
| 933 |
|
|---|
| 934 | if (ready_hand == tStdin) {
|
|---|
| 935 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 936 | pproc->sv_stdin[0] = 0;
|
|---|
| 937 | CloseHandle(tStdin);
|
|---|
| 938 | tStdin = 0;
|
|---|
| 939 | stdin_eof = TRUE;
|
|---|
| 940 |
|
|---|
| 941 | } else if (ready_hand == tStdout) {
|
|---|
| 942 |
|
|---|
| 943 | CloseHandle((HANDLE)pproc->sv_stdout[0]);
|
|---|
| 944 | pproc->sv_stdout[0] = 0;
|
|---|
| 945 | CloseHandle(tStdout);
|
|---|
| 946 | tStdout = 0;
|
|---|
| 947 | stdout_eof = TRUE;
|
|---|
| 948 |
|
|---|
| 949 | } else if (ready_hand == tStderr) {
|
|---|
| 950 |
|
|---|
| 951 | CloseHandle((HANDLE)pproc->sv_stderr[0]);
|
|---|
| 952 | pproc->sv_stderr[0] = 0;
|
|---|
| 953 | CloseHandle(tStderr);
|
|---|
| 954 | tStderr = 0;
|
|---|
| 955 | stderr_eof = TRUE;
|
|---|
| 956 |
|
|---|
| 957 | } else if (ready_hand == childhand) {
|
|---|
| 958 |
|
|---|
| 959 | DWORD ierr;
|
|---|
| 960 | GetExitCodeResult = GetExitCodeProcess(childhand, &ierr);
|
|---|
| 961 | if (ierr == CONTROL_C_EXIT) {
|
|---|
| 962 | pproc->signal = SIGINT;
|
|---|
| 963 | } else {
|
|---|
| 964 | pproc->exit_code = ierr;
|
|---|
| 965 | }
|
|---|
| 966 | if (GetExitCodeResult == FALSE) {
|
|---|
| 967 | pproc->last_err = GetLastError();
|
|---|
| 968 | pproc->lerrno = E_SCALL;
|
|---|
| 969 | goto done;
|
|---|
| 970 | }
|
|---|
| 971 | child_dead = TRUE;
|
|---|
| 972 |
|
|---|
| 973 | } else {
|
|---|
| 974 |
|
|---|
| 975 | /* ?? Got back a handle we didn't query ?? */
|
|---|
| 976 | pproc->last_err = 0;
|
|---|
| 977 | pproc->lerrno = E_FAIL;
|
|---|
| 978 | goto done;
|
|---|
| 979 | }
|
|---|
| 980 | }
|
|---|
| 981 |
|
|---|
| 982 | done:
|
|---|
| 983 | if (tStdin != 0)
|
|---|
| 984 | CloseHandle(tStdin);
|
|---|
| 985 | if (tStdout != 0)
|
|---|
| 986 | CloseHandle(tStdout);
|
|---|
| 987 | if (tStderr != 0)
|
|---|
| 988 | CloseHandle(tStderr);
|
|---|
| 989 |
|
|---|
| 990 | if (pproc->lerrno)
|
|---|
| 991 | return(-1);
|
|---|
| 992 | else
|
|---|
| 993 | return(0);
|
|---|
| 994 |
|
|---|
| 995 | }
|
|---|
| 996 |
|
|---|
| 997 | #ifndef KMK /* unused */
|
|---|
| 998 | /*
|
|---|
| 999 | * Purpose: collects output from child process and returns results
|
|---|
| 1000 | *
|
|---|
| 1001 | * Description:
|
|---|
| 1002 | *
|
|---|
| 1003 | * Returns:
|
|---|
| 1004 | *
|
|---|
| 1005 | * Notes/Dependencies:
|
|---|
| 1006 | */
|
|---|
| 1007 | long
|
|---|
| 1008 | process_file_io(
|
|---|
| 1009 | HANDLE proc)
|
|---|
| 1010 | {
|
|---|
| 1011 | sub_process *pproc;
|
|---|
| 1012 | if (proc == NULL)
|
|---|
| 1013 | pproc = process_wait_for_any_private();
|
|---|
| 1014 | else
|
|---|
| 1015 | pproc = (sub_process *)proc;
|
|---|
| 1016 |
|
|---|
| 1017 | /* some sort of internal error */
|
|---|
| 1018 | if (!pproc)
|
|---|
| 1019 | return -1;
|
|---|
| 1020 |
|
|---|
| 1021 | return process_file_io_private(proc, TRUE);
|
|---|
| 1022 | }
|
|---|
| 1023 | #endif /* !KMK - unused */
|
|---|
| 1024 |
|
|---|
| 1025 | /* private function, avoid some kernel calls. (bird) */
|
|---|
| 1026 | static long
|
|---|
| 1027 | process_file_io_private(
|
|---|
| 1028 | sub_process *pproc,
|
|---|
| 1029 | BOOL fNeedToWait)
|
|---|
| 1030 | {
|
|---|
| 1031 | HANDLE childhand;
|
|---|
| 1032 | DWORD wait_return;
|
|---|
| 1033 | BOOL GetExitCodeResult;
|
|---|
| 1034 | DWORD ierr;
|
|---|
| 1035 |
|
|---|
| 1036 | childhand = (HANDLE) pproc->pid;
|
|---|
| 1037 |
|
|---|
| 1038 | /*
|
|---|
| 1039 | * This function is poorly named, and could also be used just to wait
|
|---|
| 1040 | * for child death if you're doing your own pipe I/O. If that is
|
|---|
| 1041 | * the case, close the pipe handles here.
|
|---|
| 1042 | */
|
|---|
| 1043 | if (pproc->sv_stdin[0]) {
|
|---|
| 1044 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 1045 | pproc->sv_stdin[0] = 0;
|
|---|
| 1046 | }
|
|---|
| 1047 | if (pproc->sv_stdout[0]) {
|
|---|
| 1048 | CloseHandle((HANDLE)pproc->sv_stdout[0]);
|
|---|
| 1049 | pproc->sv_stdout[0] = 0;
|
|---|
| 1050 | }
|
|---|
| 1051 | if (pproc->sv_stderr[0]) {
|
|---|
| 1052 | CloseHandle((HANDLE)pproc->sv_stderr[0]);
|
|---|
| 1053 | pproc->sv_stderr[0] = 0;
|
|---|
| 1054 | }
|
|---|
| 1055 |
|
|---|
| 1056 | #ifdef KMK
|
|---|
| 1057 | if (childhand == NULL || childhand == INVALID_HANDLE_VALUE) {
|
|---|
| 1058 | goto done2;
|
|---|
| 1059 | }
|
|---|
| 1060 | #endif
|
|---|
| 1061 |
|
|---|
| 1062 | /*
|
|---|
| 1063 | * Wait for the child process to exit it we didn't do that already.
|
|---|
| 1064 | */
|
|---|
| 1065 | if (fNeedToWait) {
|
|---|
| 1066 | wait_return = WaitForSingleObject(childhand, INFINITE);
|
|---|
| 1067 | if (wait_return != WAIT_OBJECT_0) {
|
|---|
| 1068 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 1069 | pproc->last_err = GetLastError();
|
|---|
| 1070 | pproc->lerrno = E_SCALL;
|
|---|
| 1071 | goto done2;
|
|---|
| 1072 | }
|
|---|
| 1073 | }
|
|---|
| 1074 |
|
|---|
| 1075 | GetExitCodeResult = GetExitCodeProcess(childhand, &ierr);
|
|---|
| 1076 | if (ierr == CONTROL_C_EXIT) {
|
|---|
| 1077 | pproc->signal = SIGINT;
|
|---|
| 1078 | } else {
|
|---|
| 1079 | pproc->exit_code = ierr;
|
|---|
| 1080 | }
|
|---|
| 1081 | if (GetExitCodeResult == FALSE) {
|
|---|
| 1082 | pproc->last_err = GetLastError();
|
|---|
| 1083 | pproc->lerrno = E_SCALL;
|
|---|
| 1084 | }
|
|---|
| 1085 |
|
|---|
| 1086 | done2:
|
|---|
| 1087 | if (pproc->lerrno)
|
|---|
| 1088 | return(-1);
|
|---|
| 1089 | else
|
|---|
| 1090 | return(0);
|
|---|
| 1091 |
|
|---|
| 1092 | }
|
|---|
| 1093 |
|
|---|
| 1094 | /*
|
|---|
| 1095 | * Description: Clean up any leftover handles, etc. It is up to the
|
|---|
| 1096 | * caller to manage and free the input, ouput, and stderr buffers.
|
|---|
| 1097 | */
|
|---|
| 1098 | void
|
|---|
| 1099 | process_cleanup(
|
|---|
| 1100 | HANDLE proc)
|
|---|
| 1101 | {
|
|---|
| 1102 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 1103 | int i;
|
|---|
| 1104 |
|
|---|
| 1105 | #ifdef KMK
|
|---|
| 1106 | if (pproc->enmType == kRegular) {
|
|---|
| 1107 | #endif
|
|---|
| 1108 |
|
|---|
| 1109 | if (pproc->using_pipes) {
|
|---|
| 1110 | for (i= 0; i <= 1; i++) {
|
|---|
| 1111 | if ((HANDLE)pproc->sv_stdin[i])
|
|---|
| 1112 | CloseHandle((HANDLE)pproc->sv_stdin[i]);
|
|---|
| 1113 | if ((HANDLE)pproc->sv_stdout[i])
|
|---|
| 1114 | CloseHandle((HANDLE)pproc->sv_stdout[i]);
|
|---|
| 1115 | if ((HANDLE)pproc->sv_stderr[i])
|
|---|
| 1116 | CloseHandle((HANDLE)pproc->sv_stderr[i]);
|
|---|
| 1117 | }
|
|---|
| 1118 | }
|
|---|
| 1119 | if ((HANDLE)pproc->pid)
|
|---|
| 1120 | CloseHandle((HANDLE)pproc->pid);
|
|---|
| 1121 | #ifdef KMK
|
|---|
| 1122 | } else if (pproc->enmType == kSubmit) {
|
|---|
| 1123 | /* nothing to do. */
|
|---|
| 1124 | } else {
|
|---|
| 1125 | assert(0);
|
|---|
| 1126 | return;
|
|---|
| 1127 | }
|
|---|
| 1128 | pproc->enmType = kSubProcFreed;
|
|---|
| 1129 | #endif
|
|---|
| 1130 |
|
|---|
| 1131 | free(pproc);
|
|---|
| 1132 | }
|
|---|
| 1133 |
|
|---|
| 1134 |
|
|---|
| 1135 | /*
|
|---|
| 1136 | * Description:
|
|---|
| 1137 | * Create a command line buffer to pass to CreateProcess
|
|---|
| 1138 | *
|
|---|
| 1139 | * Returns: the buffer or NULL for failure
|
|---|
| 1140 | * Shell case: sh_name a:/full/path/to/script argv[1] argv[2] ...
|
|---|
| 1141 | * Otherwise: argv[0] argv[1] argv[2] ...
|
|---|
| 1142 | *
|
|---|
| 1143 | * Notes/Dependencies:
|
|---|
| 1144 | * CreateProcess does not take an argv, so this command creates a
|
|---|
| 1145 | * command line for the executable.
|
|---|
| 1146 | */
|
|---|
| 1147 |
|
|---|
| 1148 | static char *
|
|---|
| 1149 | make_command_line( char *shell_name, char *full_exec_path, char **argv)
|
|---|
| 1150 | {
|
|---|
| 1151 | int argc = 0;
|
|---|
| 1152 | char** argvi;
|
|---|
| 1153 | int* enclose_in_quotes = NULL;
|
|---|
| 1154 | int* enclose_in_quotes_i;
|
|---|
| 1155 | unsigned int bytes_required = 0;
|
|---|
| 1156 | char* command_line;
|
|---|
| 1157 | char* command_line_i;
|
|---|
| 1158 | int cygwin_mode = 0; /* HAVE_CYGWIN_SHELL */
|
|---|
| 1159 | int have_sh = 0; /* HAVE_CYGWIN_SHELL */
|
|---|
| 1160 | #undef HAVE_CYGWIN_SHELL
|
|---|
| 1161 | #ifdef HAVE_CYGWIN_SHELL
|
|---|
| 1162 | have_sh = (shell_name != NULL || strstr(full_exec_path, "sh.exe"));
|
|---|
| 1163 | cygwin_mode = 1;
|
|---|
| 1164 | #endif
|
|---|
| 1165 |
|
|---|
| 1166 | if (shell_name && full_exec_path) {
|
|---|
| 1167 | bytes_required
|
|---|
| 1168 | = strlen(shell_name) + 1 + strlen(full_exec_path);
|
|---|
| 1169 | /*
|
|---|
| 1170 | * Skip argv[0] if any, when shell_name is given.
|
|---|
| 1171 | */
|
|---|
| 1172 | if (*argv) argv++;
|
|---|
| 1173 | /*
|
|---|
| 1174 | * Add one for the intervening space.
|
|---|
| 1175 | */
|
|---|
| 1176 | if (*argv) bytes_required++;
|
|---|
| 1177 | }
|
|---|
| 1178 |
|
|---|
| 1179 | argvi = argv;
|
|---|
| 1180 | while (*(argvi++)) argc++;
|
|---|
| 1181 |
|
|---|
| 1182 | if (argc) {
|
|---|
| 1183 | enclose_in_quotes = (int*) calloc(1, argc * sizeof(int));
|
|---|
| 1184 |
|
|---|
| 1185 | if (!enclose_in_quotes) {
|
|---|
| 1186 | return NULL;
|
|---|
| 1187 | }
|
|---|
| 1188 | }
|
|---|
| 1189 |
|
|---|
| 1190 | /* We have to make one pass through each argv[i] to see if we need
|
|---|
| 1191 | * to enclose it in ", so we might as well figure out how much
|
|---|
| 1192 | * memory we'll need on the same pass.
|
|---|
| 1193 | */
|
|---|
| 1194 |
|
|---|
| 1195 | argvi = argv;
|
|---|
| 1196 | enclose_in_quotes_i = enclose_in_quotes;
|
|---|
| 1197 | while(*argvi) {
|
|---|
| 1198 | char* p = *argvi;
|
|---|
| 1199 | unsigned int backslash_count = 0;
|
|---|
| 1200 |
|
|---|
| 1201 | /*
|
|---|
| 1202 | * We have to enclose empty arguments in ".
|
|---|
| 1203 | */
|
|---|
| 1204 | if (!(*p)) *enclose_in_quotes_i = 1;
|
|---|
| 1205 |
|
|---|
| 1206 | while(*p) {
|
|---|
| 1207 | switch (*p) {
|
|---|
| 1208 | case '\"':
|
|---|
| 1209 | /*
|
|---|
| 1210 | * We have to insert a backslash for each "
|
|---|
| 1211 | * and each \ that precedes the ".
|
|---|
| 1212 | */
|
|---|
| 1213 | bytes_required += (backslash_count + 1);
|
|---|
| 1214 | backslash_count = 0;
|
|---|
| 1215 | break;
|
|---|
| 1216 |
|
|---|
| 1217 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1218 | case '\\':
|
|---|
| 1219 | backslash_count++;
|
|---|
| 1220 | break;
|
|---|
| 1221 | #endif
|
|---|
| 1222 | /*
|
|---|
| 1223 | * At one time we set *enclose_in_quotes_i for '*' or '?' to suppress
|
|---|
| 1224 | * wildcard expansion in programs linked with MSVC's SETARGV.OBJ so
|
|---|
| 1225 | * that argv in always equals argv out. This was removed. Say you have
|
|---|
| 1226 | * such a program named glob.exe. You enter
|
|---|
| 1227 | * glob '*'
|
|---|
| 1228 | * at the sh command prompt. Obviously the intent is to make glob do the
|
|---|
| 1229 | * wildcarding instead of sh. If we set *enclose_in_quotes_i for '*' or '?',
|
|---|
| 1230 | * then the command line that glob would see would be
|
|---|
| 1231 | * glob "*"
|
|---|
| 1232 | * and the _setargv in SETARGV.OBJ would _not_ expand the *.
|
|---|
| 1233 | */
|
|---|
| 1234 | case ' ':
|
|---|
| 1235 | case '\t':
|
|---|
| 1236 | *enclose_in_quotes_i = 1;
|
|---|
| 1237 | /* fall through */
|
|---|
| 1238 |
|
|---|
| 1239 | default:
|
|---|
| 1240 | backslash_count = 0;
|
|---|
| 1241 | break;
|
|---|
| 1242 | }
|
|---|
| 1243 |
|
|---|
| 1244 | /*
|
|---|
| 1245 | * Add one for each character in argv[i].
|
|---|
| 1246 | */
|
|---|
| 1247 | bytes_required++;
|
|---|
| 1248 |
|
|---|
| 1249 | p++;
|
|---|
| 1250 | }
|
|---|
| 1251 |
|
|---|
| 1252 | if (*enclose_in_quotes_i) {
|
|---|
| 1253 | /*
|
|---|
| 1254 | * Add one for each enclosing ",
|
|---|
| 1255 | * and one for each \ that precedes the
|
|---|
| 1256 | * closing ".
|
|---|
| 1257 | */
|
|---|
| 1258 | bytes_required += (backslash_count + 2);
|
|---|
| 1259 | }
|
|---|
| 1260 |
|
|---|
| 1261 | /*
|
|---|
| 1262 | * Add one for the intervening space.
|
|---|
| 1263 | */
|
|---|
| 1264 | if (*(++argvi)) bytes_required++;
|
|---|
| 1265 | enclose_in_quotes_i++;
|
|---|
| 1266 | }
|
|---|
| 1267 |
|
|---|
| 1268 | /*
|
|---|
| 1269 | * Add one for the terminating NULL.
|
|---|
| 1270 | */
|
|---|
| 1271 | bytes_required++;
|
|---|
| 1272 | #ifdef KMK /* for the space before the final " in case we need it. */
|
|---|
| 1273 | bytes_required++;
|
|---|
| 1274 | #endif
|
|---|
| 1275 |
|
|---|
| 1276 | command_line = (char*) malloc(bytes_required);
|
|---|
| 1277 |
|
|---|
| 1278 | if (!command_line) {
|
|---|
| 1279 | if (enclose_in_quotes) free(enclose_in_quotes);
|
|---|
| 1280 | return NULL;
|
|---|
| 1281 | }
|
|---|
| 1282 |
|
|---|
| 1283 | command_line_i = command_line;
|
|---|
| 1284 |
|
|---|
| 1285 | if (shell_name && full_exec_path) {
|
|---|
| 1286 | while(*shell_name) {
|
|---|
| 1287 | *(command_line_i++) = *(shell_name++);
|
|---|
| 1288 | }
|
|---|
| 1289 |
|
|---|
| 1290 | *(command_line_i++) = ' ';
|
|---|
| 1291 |
|
|---|
| 1292 | while(*full_exec_path) {
|
|---|
| 1293 | *(command_line_i++) = *(full_exec_path++);
|
|---|
| 1294 | }
|
|---|
| 1295 |
|
|---|
| 1296 | if (*argv) {
|
|---|
| 1297 | *(command_line_i++) = ' ';
|
|---|
| 1298 | }
|
|---|
| 1299 | }
|
|---|
| 1300 |
|
|---|
| 1301 | argvi = argv;
|
|---|
| 1302 | enclose_in_quotes_i = enclose_in_quotes;
|
|---|
| 1303 |
|
|---|
| 1304 | while(*argvi) {
|
|---|
| 1305 | char* p = *argvi;
|
|---|
| 1306 | unsigned int backslash_count = 0;
|
|---|
| 1307 |
|
|---|
| 1308 | if (*enclose_in_quotes_i) {
|
|---|
| 1309 | *(command_line_i++) = '\"';
|
|---|
| 1310 | }
|
|---|
| 1311 |
|
|---|
| 1312 | while(*p) {
|
|---|
| 1313 | if (*p == '\"') {
|
|---|
| 1314 | if (cygwin_mode && have_sh) { /* HAVE_CYGWIN_SHELL */
|
|---|
| 1315 | /* instead of a \", cygwin likes "" */
|
|---|
| 1316 | *(command_line_i++) = '\"';
|
|---|
| 1317 | } else {
|
|---|
| 1318 |
|
|---|
| 1319 | /*
|
|---|
| 1320 | * We have to insert a backslash for the "
|
|---|
| 1321 | * and each \ that precedes the ".
|
|---|
| 1322 | */
|
|---|
| 1323 | backslash_count++;
|
|---|
| 1324 |
|
|---|
| 1325 | while(backslash_count) {
|
|---|
| 1326 | *(command_line_i++) = '\\';
|
|---|
| 1327 | backslash_count--;
|
|---|
| 1328 | };
|
|---|
| 1329 | }
|
|---|
| 1330 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1331 | } else if (*p == '\\') {
|
|---|
| 1332 | backslash_count++;
|
|---|
| 1333 | } else {
|
|---|
| 1334 | backslash_count = 0;
|
|---|
| 1335 | #endif
|
|---|
| 1336 | }
|
|---|
| 1337 |
|
|---|
| 1338 | /*
|
|---|
| 1339 | * Copy the character.
|
|---|
| 1340 | */
|
|---|
| 1341 | *(command_line_i++) = *(p++);
|
|---|
| 1342 | }
|
|---|
| 1343 |
|
|---|
| 1344 | if (*enclose_in_quotes_i) {
|
|---|
| 1345 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1346 | /*
|
|---|
| 1347 | * Add one \ for each \ that precedes the
|
|---|
| 1348 | * closing ".
|
|---|
| 1349 | */
|
|---|
| 1350 | while(backslash_count--) {
|
|---|
| 1351 | *(command_line_i++) = '\\';
|
|---|
| 1352 | };
|
|---|
| 1353 | #endif
|
|---|
| 1354 | #ifdef KMK
|
|---|
| 1355 | /*
|
|---|
| 1356 | * ash it put off by echo "hello world" ending up as:
|
|---|
| 1357 | * G:/.../kmk_ash.exe -c "echo ""hello world"""
|
|---|
| 1358 | * It wants a space before the last '"'.
|
|---|
| 1359 | * (The 'test_shell' goals in Makefile.kmk tests this problem.)
|
|---|
| 1360 | */
|
|---|
| 1361 | if (command_line_i[-1] == '\"' /* && cygwin_mode && have_sh*/ && !argvi[1]) {
|
|---|
| 1362 | *(command_line_i++) = ' ';
|
|---|
| 1363 | }
|
|---|
| 1364 | #endif
|
|---|
| 1365 | *(command_line_i++) = '\"';
|
|---|
| 1366 | }
|
|---|
| 1367 |
|
|---|
| 1368 | /*
|
|---|
| 1369 | * Append an intervening space.
|
|---|
| 1370 | */
|
|---|
| 1371 | if (*(++argvi)) {
|
|---|
| 1372 | *(command_line_i++) = ' ';
|
|---|
| 1373 | }
|
|---|
| 1374 |
|
|---|
| 1375 | enclose_in_quotes_i++;
|
|---|
| 1376 | }
|
|---|
| 1377 |
|
|---|
| 1378 | /*
|
|---|
| 1379 | * Append the terminating NULL.
|
|---|
| 1380 | */
|
|---|
| 1381 | *command_line_i = '\0';
|
|---|
| 1382 |
|
|---|
| 1383 | if (enclose_in_quotes) free(enclose_in_quotes);
|
|---|
| 1384 | return command_line;
|
|---|
| 1385 | }
|
|---|
| 1386 |
|
|---|
| 1387 | /*
|
|---|
| 1388 | * Description: Given an argv and optional envp, launch the process
|
|---|
| 1389 | * using the default stdin, stdout, and stderr handles.
|
|---|
| 1390 | * Also, register process so that process_wait_for_any_private()
|
|---|
| 1391 | * can be used via process_file_io(NULL) or
|
|---|
| 1392 | * process_wait_for_any().
|
|---|
| 1393 | *
|
|---|
| 1394 | * Returns:
|
|---|
| 1395 | *
|
|---|
| 1396 | * Notes/Dependencies:
|
|---|
| 1397 | */
|
|---|
| 1398 | HANDLE
|
|---|
| 1399 | process_easy(
|
|---|
| 1400 | char **argv,
|
|---|
| 1401 | char **envp)
|
|---|
| 1402 | {
|
|---|
| 1403 | #ifndef KMK
|
|---|
| 1404 | HANDLE hIn;
|
|---|
| 1405 | HANDLE hOut;
|
|---|
| 1406 | HANDLE hErr;
|
|---|
| 1407 | #endif
|
|---|
| 1408 | HANDLE hProcess;
|
|---|
| 1409 |
|
|---|
| 1410 | if (proc_index >= MAXIMUM_WAIT_OBJECTS) {
|
|---|
| 1411 | DB (DB_JOBS, ("process_easy: All process slots used up\n"));
|
|---|
| 1412 | return INVALID_HANDLE_VALUE;
|
|---|
| 1413 | }
|
|---|
| 1414 | #ifndef KMK
|
|---|
| 1415 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1416 | GetStdHandle(STD_INPUT_HANDLE),
|
|---|
| 1417 | GetCurrentProcess(),
|
|---|
| 1418 | &hIn,
|
|---|
| 1419 | 0,
|
|---|
| 1420 | TRUE,
|
|---|
| 1421 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1422 | fprintf(stderr,
|
|---|
| 1423 | "process_easy: DuplicateHandle(In) failed (e=%ld)\n",
|
|---|
| 1424 | GetLastError());
|
|---|
| 1425 | return INVALID_HANDLE_VALUE;
|
|---|
| 1426 | }
|
|---|
| 1427 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1428 | GetStdHandle(STD_OUTPUT_HANDLE),
|
|---|
| 1429 | GetCurrentProcess(),
|
|---|
| 1430 | &hOut,
|
|---|
| 1431 | 0,
|
|---|
| 1432 | TRUE,
|
|---|
| 1433 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1434 | fprintf(stderr,
|
|---|
| 1435 | "process_easy: DuplicateHandle(Out) failed (e=%ld)\n",
|
|---|
| 1436 | GetLastError());
|
|---|
| 1437 | return INVALID_HANDLE_VALUE;
|
|---|
| 1438 | }
|
|---|
| 1439 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1440 | GetStdHandle(STD_ERROR_HANDLE),
|
|---|
| 1441 | GetCurrentProcess(),
|
|---|
| 1442 | &hErr,
|
|---|
| 1443 | 0,
|
|---|
| 1444 | TRUE,
|
|---|
| 1445 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1446 | fprintf(stderr,
|
|---|
| 1447 | "process_easy: DuplicateHandle(Err) failed (e=%ld)\n",
|
|---|
| 1448 | GetLastError());
|
|---|
| 1449 | return INVALID_HANDLE_VALUE;
|
|---|
| 1450 | }
|
|---|
| 1451 |
|
|---|
| 1452 | hProcess = process_init_fd(hIn, hOut, hErr);
|
|---|
| 1453 | #else
|
|---|
| 1454 | hProcess = process_init_fd(0, 0, 0);
|
|---|
| 1455 | #endif /* !KMK */
|
|---|
| 1456 |
|
|---|
| 1457 | if (process_begin(hProcess, argv, envp, argv[0], NULL)) {
|
|---|
| 1458 | fake_exits_pending++;
|
|---|
| 1459 | /* process_begin() failed: make a note of that. */
|
|---|
| 1460 | if (!((sub_process*) hProcess)->last_err)
|
|---|
| 1461 | ((sub_process*) hProcess)->last_err = -1;
|
|---|
| 1462 | #ifdef KMK
|
|---|
| 1463 | if (!((sub_process*) hProcess)->exit_code)
|
|---|
| 1464 | #endif
|
|---|
| 1465 | ((sub_process*) hProcess)->exit_code = process_last_err(hProcess);
|
|---|
| 1466 |
|
|---|
| 1467 | #ifndef KMK
|
|---|
| 1468 | /* close up unused handles */
|
|---|
| 1469 | CloseHandle(hIn);
|
|---|
| 1470 | CloseHandle(hOut);
|
|---|
| 1471 | CloseHandle(hErr);
|
|---|
| 1472 | #endif
|
|---|
| 1473 | }
|
|---|
| 1474 |
|
|---|
| 1475 | process_register(hProcess);
|
|---|
| 1476 |
|
|---|
| 1477 | return hProcess;
|
|---|
| 1478 | }
|
|---|