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