| 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 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 2, or (at your option) any later version.
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| 9 |
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| 10 | GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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| 11 | WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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| 12 | A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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| 13 |
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| 14 | You should have received a copy of the GNU General Public License along with
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| 15 | GNU Make; see the file COPYING. If not, write to the Free Software
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| 16 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. */
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| 17 |
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| 18 | #include <stdlib.h>
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| 19 | #include <stdio.h>
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| 20 | #include <process.h> /* for msvc _beginthreadex, _endthreadex */
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| 21 | #include <signal.h>
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| 22 | #include <windows.h>
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| 23 |
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| 24 | #include "sub_proc.h"
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| 25 | #include "proc.h"
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| 26 | #include "w32err.h"
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| 27 | #include "config.h"
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| 28 | #include "debug.h"
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| 29 |
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| 30 | static char *make_command_line(char *shell_name, char *exec_path, char **argv);
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| 31 |
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| 32 | typedef struct sub_process_t {
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| 33 | int sv_stdin[2];
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| 34 | int sv_stdout[2];
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| 35 | int sv_stderr[2];
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| 36 | int using_pipes;
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| 37 | char *inp;
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| 38 | DWORD incnt;
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| 39 | char * volatile outp;
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| 40 | volatile DWORD outcnt;
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| 41 | char * volatile errp;
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| 42 | volatile DWORD errcnt;
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| 43 | int pid;
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| 44 | int exit_code;
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| 45 | int signal;
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| 46 | long last_err;
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| 47 | long lerrno;
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| 48 | } sub_process;
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| 49 |
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| 50 | /* keep track of children so we can implement a waitpid-like routine */
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| 51 | static sub_process *proc_array[MAXIMUM_WAIT_OBJECTS];
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| 52 | static int proc_index = 0;
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| 53 | static int fake_exits_pending = 0;
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| 54 |
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| 55 | /*
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| 56 | * When a process has been waited for, adjust the wait state
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| 57 | * array so that we don't wait for it again
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| 58 | */
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| 59 | static void
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| 60 | process_adjust_wait_state(sub_process* pproc)
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| 61 | {
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| 62 | int i;
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| 63 |
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| 64 | if (!proc_index)
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| 65 | return;
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| 66 |
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| 67 | for (i = 0; i < proc_index; i++)
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| 68 | if (proc_array[i]->pid == pproc->pid)
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| 69 | break;
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| 70 |
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| 71 | if (i < proc_index) {
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| 72 | proc_index--;
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| 73 | if (i != proc_index)
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| 74 | memmove(&proc_array[i], &proc_array[i+1],
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| 75 | (proc_index-i) * sizeof(sub_process*));
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| 76 | proc_array[proc_index] = NULL;
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| 77 | }
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| 78 | }
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| 79 |
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| 80 | /*
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| 81 | * Waits for any of the registered child processes to finish.
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| 82 | */
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| 83 | static sub_process *
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| 84 | process_wait_for_any_private(void)
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| 85 | {
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| 86 | HANDLE handles[MAXIMUM_WAIT_OBJECTS];
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| 87 | DWORD retval, which;
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| 88 | int i;
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| 89 |
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| 90 | if (!proc_index)
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| 91 | return NULL;
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| 92 |
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| 93 | /* build array of handles to wait for */
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| 94 | for (i = 0; i < proc_index; i++) {
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| 95 | handles[i] = (HANDLE) proc_array[i]->pid;
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| 96 |
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| 97 | if (fake_exits_pending && proc_array[i]->exit_code)
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| 98 | break;
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| 99 | }
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| 100 |
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| 101 | /* wait for someone to exit */
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| 102 | if (!fake_exits_pending) {
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| 103 | retval = WaitForMultipleObjects(proc_index, handles, FALSE, INFINITE);
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| 104 | which = retval - WAIT_OBJECT_0;
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| 105 | } else {
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| 106 | fake_exits_pending--;
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| 107 | retval = !WAIT_FAILED;
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| 108 | which = i;
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| 109 | }
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| 110 |
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| 111 | /* return pointer to process */
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| 112 | if (retval != WAIT_FAILED) {
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| 113 | sub_process* pproc = proc_array[which];
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| 114 | process_adjust_wait_state(pproc);
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| 115 | return pproc;
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| 116 | } else
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| 117 | return NULL;
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| 118 | }
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| 119 |
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| 120 | /*
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| 121 | * Terminate a process.
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| 122 | */
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| 123 | BOOL
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| 124 | process_kill(HANDLE proc, int signal)
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| 125 | {
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| 126 | sub_process* pproc = (sub_process*) proc;
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| 127 | pproc->signal = signal;
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| 128 | return (TerminateProcess((HANDLE) pproc->pid, signal));
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| 129 | }
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| 130 |
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| 131 | /*
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| 132 | * Use this function to register processes you wish to wait for by
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| 133 | * calling process_file_io(NULL) or process_wait_any(). This must be done
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| 134 | * because it is possible for callers of this library to reuse the same
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| 135 | * handle for multiple processes launches :-(
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| 136 | */
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| 137 | void
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| 138 | process_register(HANDLE proc)
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| 139 | {
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| 140 | if (proc_index < MAXIMUM_WAIT_OBJECTS)
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| 141 | proc_array[proc_index++] = (sub_process *) proc;
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| 142 | }
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| 143 |
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| 144 | /*
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| 145 | * Return the number of processes that we are still waiting for.
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| 146 | */
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| 147 | int
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| 148 | process_used_slots(void)
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| 149 | {
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| 150 | return proc_index;
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| 151 | }
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| 152 |
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| 153 | /*
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| 154 | * Public function which works kind of like waitpid(). Wait for any
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| 155 | * of the children to die and return results. To call this function,
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| 156 | * you must do 1 of things:
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| 157 | *
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| 158 | * x = process_easy(...);
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| 159 | *
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| 160 | * or
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| 161 | *
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| 162 | * x = process_init_fd();
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| 163 | * process_register(x);
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| 164 | *
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| 165 | * or
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| 166 | *
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| 167 | * x = process_init();
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| 168 | * process_register(x);
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| 169 | *
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| 170 | * You must NOT then call process_pipe_io() because this function is
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| 171 | * not capable of handling automatic notification of any child
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| 172 | * death.
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| 173 | */
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| 174 |
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| 175 | HANDLE
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| 176 | process_wait_for_any(void)
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| 177 | {
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| 178 | sub_process* pproc = process_wait_for_any_private();
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| 179 |
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| 180 | if (!pproc)
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| 181 | return NULL;
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| 182 | else {
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| 183 | /*
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| 184 | * Ouch! can't tell caller if this fails directly. Caller
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| 185 | * will have to use process_last_err()
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| 186 | */
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| 187 | (void) process_file_io(pproc);
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| 188 | return ((HANDLE) pproc);
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| 189 | }
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| 190 | }
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| 191 |
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| 192 | long
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| 193 | process_signal(HANDLE proc)
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| 194 | {
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| 195 | if (proc == INVALID_HANDLE_VALUE) return 0;
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| 196 | return (((sub_process *)proc)->signal);
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| 197 | }
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| 198 |
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| 199 | long
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| 200 | process_last_err(HANDLE proc)
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| 201 | {
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| 202 | if (proc == INVALID_HANDLE_VALUE) return ERROR_INVALID_HANDLE;
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| 203 | return (((sub_process *)proc)->last_err);
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| 204 | }
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| 205 |
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| 206 | long
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| 207 | process_exit_code(HANDLE proc)
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| 208 | {
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| 209 | if (proc == INVALID_HANDLE_VALUE) return EXIT_FAILURE;
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| 210 | return (((sub_process *)proc)->exit_code);
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| 211 | }
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| 212 |
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| 213 | /*
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| 214 | 2006-02:
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| 215 | All the following functions are currently unused.
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| 216 | All of them would crash gmake if called with argument INVALID_HANDLE_VALUE.
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| 217 | Hence whoever wants to use one of this functions must invent and implement
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| 218 | a reasonable error handling for this function.
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| 219 |
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| 220 | char *
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| 221 | process_outbuf(HANDLE proc)
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| 222 | {
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| 223 | return (((sub_process *)proc)->outp);
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| 224 | }
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| 225 |
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| 226 | char *
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| 227 | process_errbuf(HANDLE proc)
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| 228 | {
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| 229 | return (((sub_process *)proc)->errp);
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| 230 | }
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| 231 |
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| 232 | int
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| 233 | process_outcnt(HANDLE proc)
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| 234 | {
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| 235 | return (((sub_process *)proc)->outcnt);
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| 236 | }
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| 237 |
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| 238 | int
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| 239 | process_errcnt(HANDLE proc)
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| 240 | {
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| 241 | return (((sub_process *)proc)->errcnt);
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| 242 | }
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| 243 |
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| 244 | void
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| 245 | process_pipes(HANDLE proc, int pipes[3])
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| 246 | {
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| 247 | pipes[0] = ((sub_process *)proc)->sv_stdin[0];
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| 248 | pipes[1] = ((sub_process *)proc)->sv_stdout[0];
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| 249 | pipes[2] = ((sub_process *)proc)->sv_stderr[0];
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| 250 | return;
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| 251 | }
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| 252 | */
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| 253 |
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| 254 | HANDLE
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| 255 | process_init()
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| 256 | {
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| 257 | sub_process *pproc;
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| 258 | /*
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| 259 | * open file descriptors for attaching stdin/stdout/sterr
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| 260 | */
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| 261 | HANDLE stdin_pipes[2];
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| 262 | HANDLE stdout_pipes[2];
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| 263 | HANDLE stderr_pipes[2];
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| 264 | SECURITY_ATTRIBUTES inherit;
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| 265 | BYTE sd[SECURITY_DESCRIPTOR_MIN_LENGTH];
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| 266 |
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| 267 | pproc = malloc(sizeof(*pproc));
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| 268 | memset(pproc, 0, sizeof(*pproc));
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| 269 |
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| 270 | /* We can't use NULL for lpSecurityDescriptor because that
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| 271 | uses the default security descriptor of the calling process.
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| 272 | Instead we use a security descriptor with no DACL. This
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| 273 | allows nonrestricted access to the associated objects. */
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| 274 |
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| 275 | if (!InitializeSecurityDescriptor((PSECURITY_DESCRIPTOR)(&sd),
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| 276 | SECURITY_DESCRIPTOR_REVISION)) {
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| 277 | pproc->last_err = GetLastError();
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| 278 | pproc->lerrno = E_SCALL;
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| 279 | return((HANDLE)pproc);
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| 280 | }
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| 281 |
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| 282 | inherit.nLength = sizeof(inherit);
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| 283 | inherit.lpSecurityDescriptor = (PSECURITY_DESCRIPTOR)(&sd);
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| 284 | inherit.bInheritHandle = TRUE;
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| 285 |
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| 286 | // By convention, parent gets pipe[0], and child gets pipe[1]
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| 287 | // This means the READ side of stdin pipe goes into pipe[1]
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| 288 | // and the WRITE side of the stdout and stderr pipes go into pipe[1]
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| 289 | if (CreatePipe( &stdin_pipes[1], &stdin_pipes[0], &inherit, 0) == FALSE ||
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| 290 | CreatePipe( &stdout_pipes[0], &stdout_pipes[1], &inherit, 0) == FALSE ||
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| 291 | CreatePipe( &stderr_pipes[0], &stderr_pipes[1], &inherit, 0) == FALSE) {
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| 292 |
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| 293 | pproc->last_err = GetLastError();
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| 294 | pproc->lerrno = E_SCALL;
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| 295 | return((HANDLE)pproc);
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| 296 | }
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| 297 |
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| 298 | //
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| 299 | // Mark the parent sides of the pipes as non-inheritable
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| 300 | //
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| 301 | if (SetHandleInformation(stdin_pipes[0],
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| 302 | HANDLE_FLAG_INHERIT, 0) == FALSE ||
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| 303 | SetHandleInformation(stdout_pipes[0],
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| 304 | HANDLE_FLAG_INHERIT, 0) == FALSE ||
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| 305 | SetHandleInformation(stderr_pipes[0],
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| 306 | HANDLE_FLAG_INHERIT, 0) == FALSE) {
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| 307 |
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| 308 | pproc->last_err = GetLastError();
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| 309 | pproc->lerrno = E_SCALL;
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| 310 | return((HANDLE)pproc);
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| 311 | }
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| 312 | pproc->sv_stdin[0] = (int) stdin_pipes[0];
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| 313 | pproc->sv_stdin[1] = (int) stdin_pipes[1];
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| 314 | pproc->sv_stdout[0] = (int) stdout_pipes[0];
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| 315 | pproc->sv_stdout[1] = (int) stdout_pipes[1];
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| 316 | pproc->sv_stderr[0] = (int) stderr_pipes[0];
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| 317 | pproc->sv_stderr[1] = (int) stderr_pipes[1];
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| 318 |
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| 319 | pproc->using_pipes = 1;
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| 320 |
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| 321 | pproc->lerrno = 0;
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| 322 |
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| 323 | return((HANDLE)pproc);
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| 324 | }
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| 325 |
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| 326 |
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| 327 | HANDLE
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| 328 | process_init_fd(HANDLE stdinh, HANDLE stdouth, HANDLE stderrh)
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| 329 | {
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| 330 | sub_process *pproc;
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| 331 |
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| 332 | pproc = malloc(sizeof(*pproc));
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| 333 | memset(pproc, 0, sizeof(*pproc));
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| 334 |
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| 335 | /*
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| 336 | * Just pass the provided file handles to the 'child side' of the
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| 337 | * pipe, bypassing pipes altogether.
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| 338 | */
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| 339 | pproc->sv_stdin[1] = (int) stdinh;
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| 340 | pproc->sv_stdout[1] = (int) stdouth;
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| 341 | pproc->sv_stderr[1] = (int) stderrh;
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| 342 |
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| 343 | pproc->last_err = pproc->lerrno = 0;
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| 344 |
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| 345 | return((HANDLE)pproc);
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| 346 | }
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| 347 |
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| 348 |
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| 349 | static HANDLE
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| 350 | find_file(char *exec_path, LPOFSTRUCT file_info)
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| 351 | {
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| 352 | HANDLE exec_handle;
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| 353 | char *fname;
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| 354 | char *ext;
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| 355 |
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| 356 | fname = malloc(strlen(exec_path) + 5);
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| 357 | strcpy(fname, exec_path);
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| 358 | ext = fname + strlen(fname);
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| 359 |
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| 360 | strcpy(ext, ".exe");
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| 361 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
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| 362 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
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| 363 | free(fname);
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| 364 | return(exec_handle);
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| 365 | }
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| 366 |
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| 367 | strcpy(ext, ".cmd");
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| 368 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
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| 369 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
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| 370 | free(fname);
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| 371 | return(exec_handle);
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| 372 | }
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| 373 |
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| 374 | strcpy(ext, ".bat");
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| 375 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
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| 376 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
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| 377 | free(fname);
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| 378 | return(exec_handle);
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| 379 | }
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| 380 |
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| 381 | /* should .com come before this case? */
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| 382 | if ((exec_handle = (HANDLE)OpenFile(exec_path, file_info,
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| 383 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
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| 384 | free(fname);
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| 385 | return(exec_handle);
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| 386 | }
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| 387 |
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| 388 | strcpy(ext, ".com");
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| 389 | if ((exec_handle = (HANDLE)OpenFile(fname, file_info,
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| 390 | OF_READ | OF_SHARE_COMPAT)) != (HANDLE)HFILE_ERROR) {
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| 391 | free(fname);
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| 392 | return(exec_handle);
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| 393 | }
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| 394 |
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| 395 | free(fname);
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| 396 | return(exec_handle);
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| 397 | }
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| 398 |
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| 399 |
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| 400 | /*
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| 401 | * Description: Create the child process to be helped
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| 402 | *
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| 403 | * Returns: success <=> 0
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| 404 | *
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| 405 | * Notes/Dependencies:
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| 406 | */
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| 407 | long
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| 408 | process_begin(
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| 409 | HANDLE proc,
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| 410 | char **argv,
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| 411 | char **envp,
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| 412 | char *exec_path,
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| 413 | char *as_user)
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| 414 | {
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| 415 | sub_process *pproc = (sub_process *)proc;
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| 416 | char *shell_name = 0;
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| 417 | int file_not_found=0;
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| 418 | HANDLE exec_handle;
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| 419 | char buf[256];
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| 420 | DWORD bytes_returned;
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| 421 | DWORD flags;
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| 422 | char *command_line;
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| 423 | STARTUPINFO startInfo;
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| 424 | PROCESS_INFORMATION procInfo;
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| 425 | char *envblk=NULL;
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| 426 | OFSTRUCT file_info;
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| 427 |
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| 428 |
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| 429 | /*
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| 430 | * Shell script detection... if the exec_path starts with #! then
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| 431 | * we want to exec shell-script-name exec-path, not just exec-path
|
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| 432 | * NT doesn't recognize #!/bin/sh or #!/etc/Tivoli/bin/perl. We do not
|
|---|
| 433 | * hard-code the path to the shell or perl or whatever: Instead, we
|
|---|
| 434 | * assume it's in the path somewhere (generally, the NT tools
|
|---|
| 435 | * bin directory)
|
|---|
| 436 | * We use OpenFile here because it is capable of searching the Path.
|
|---|
| 437 | */
|
|---|
| 438 |
|
|---|
| 439 | exec_handle = find_file(exec_path, &file_info);
|
|---|
| 440 |
|
|---|
| 441 | /*
|
|---|
| 442 | * If we couldn't open the file, just assume that Windows32 will be able
|
|---|
| 443 | * to find and execute it.
|
|---|
| 444 | */
|
|---|
| 445 | if (exec_handle == (HANDLE)HFILE_ERROR) {
|
|---|
| 446 | file_not_found++;
|
|---|
| 447 | }
|
|---|
| 448 | else {
|
|---|
| 449 | /* Attempt to read the first line of the file */
|
|---|
| 450 | if (ReadFile( exec_handle,
|
|---|
| 451 | buf, sizeof(buf) - 1, /* leave room for trailing NULL */
|
|---|
| 452 | &bytes_returned, 0) == FALSE || bytes_returned < 2) {
|
|---|
| 453 |
|
|---|
| 454 | pproc->last_err = GetLastError();
|
|---|
| 455 | pproc->lerrno = E_IO;
|
|---|
| 456 | CloseHandle(exec_handle);
|
|---|
| 457 | return(-1);
|
|---|
| 458 | }
|
|---|
| 459 | if (buf[0] == '#' && buf[1] == '!') {
|
|---|
| 460 | /*
|
|---|
| 461 | * This is a shell script... Change the command line from
|
|---|
| 462 | * exec_path args to shell_name exec_path args
|
|---|
| 463 | */
|
|---|
| 464 | char *p;
|
|---|
| 465 |
|
|---|
| 466 | /* Make sure buf is NULL terminated */
|
|---|
| 467 | buf[bytes_returned] = 0;
|
|---|
| 468 | /*
|
|---|
| 469 | * Depending on the file system type, etc. the first line
|
|---|
| 470 | * of the shell script may end with newline or newline-carriage-return
|
|---|
| 471 | * Whatever it ends with, cut it off.
|
|---|
| 472 | */
|
|---|
| 473 | p= strchr(buf, '\n');
|
|---|
| 474 | if (p)
|
|---|
| 475 | *p = 0;
|
|---|
| 476 | p = strchr(buf, '\r');
|
|---|
| 477 | if (p)
|
|---|
| 478 | *p = 0;
|
|---|
| 479 |
|
|---|
| 480 | /*
|
|---|
| 481 | * Find base name of shell
|
|---|
| 482 | */
|
|---|
| 483 | shell_name = strrchr( buf, '/');
|
|---|
| 484 | if (shell_name) {
|
|---|
| 485 | shell_name++;
|
|---|
| 486 | } else {
|
|---|
| 487 | shell_name = &buf[2];/* skipping "#!" */
|
|---|
| 488 | }
|
|---|
| 489 |
|
|---|
| 490 | }
|
|---|
| 491 | CloseHandle(exec_handle);
|
|---|
| 492 | }
|
|---|
| 493 |
|
|---|
| 494 | flags = 0;
|
|---|
| 495 |
|
|---|
| 496 | if (file_not_found)
|
|---|
| 497 | command_line = make_command_line( shell_name, exec_path, argv);
|
|---|
| 498 | else
|
|---|
| 499 | command_line = make_command_line( shell_name, file_info.szPathName,
|
|---|
| 500 | argv);
|
|---|
| 501 |
|
|---|
| 502 | if ( command_line == NULL ) {
|
|---|
| 503 | pproc->last_err = 0;
|
|---|
| 504 | pproc->lerrno = E_NO_MEM;
|
|---|
| 505 | return(-1);
|
|---|
| 506 | }
|
|---|
| 507 |
|
|---|
| 508 | if (envp) {
|
|---|
| 509 | if (arr2envblk(envp, &envblk) ==FALSE) {
|
|---|
| 510 | pproc->last_err = 0;
|
|---|
| 511 | pproc->lerrno = E_NO_MEM;
|
|---|
| 512 | free( command_line );
|
|---|
| 513 | return(-1);
|
|---|
| 514 | }
|
|---|
| 515 | }
|
|---|
| 516 |
|
|---|
| 517 | if ((shell_name) || (file_not_found)) {
|
|---|
| 518 | exec_path = 0; /* Search for the program in %Path% */
|
|---|
| 519 | } else {
|
|---|
| 520 | exec_path = file_info.szPathName;
|
|---|
| 521 | }
|
|---|
| 522 |
|
|---|
| 523 | /*
|
|---|
| 524 | * Set up inherited stdin, stdout, stderr for child
|
|---|
| 525 | */
|
|---|
| 526 | GetStartupInfo(&startInfo);
|
|---|
| 527 | startInfo.dwFlags = STARTF_USESTDHANDLES;
|
|---|
| 528 | startInfo.lpReserved = 0;
|
|---|
| 529 | startInfo.cbReserved2 = 0;
|
|---|
| 530 | startInfo.lpReserved2 = 0;
|
|---|
| 531 | startInfo.lpTitle = shell_name ? shell_name : exec_path;
|
|---|
| 532 | startInfo.hStdInput = (HANDLE)pproc->sv_stdin[1];
|
|---|
| 533 | startInfo.hStdOutput = (HANDLE)pproc->sv_stdout[1];
|
|---|
| 534 | startInfo.hStdError = (HANDLE)pproc->sv_stderr[1];
|
|---|
| 535 |
|
|---|
| 536 | if (as_user) {
|
|---|
| 537 | if (envblk) free(envblk);
|
|---|
| 538 | return -1;
|
|---|
| 539 | } else {
|
|---|
| 540 | DB (DB_JOBS, ("CreateProcess(%s,%s,...)\n",
|
|---|
| 541 | exec_path ? exec_path : "NULL",
|
|---|
| 542 | command_line ? command_line : "NULL"));
|
|---|
| 543 | if (CreateProcess(
|
|---|
| 544 | exec_path,
|
|---|
| 545 | command_line,
|
|---|
| 546 | NULL,
|
|---|
| 547 | 0, /* default security attributes for thread */
|
|---|
| 548 | TRUE, /* inherit handles (e.g. helper pipes, oserv socket) */
|
|---|
| 549 | flags,
|
|---|
| 550 | envblk,
|
|---|
| 551 | 0, /* default starting directory */
|
|---|
| 552 | &startInfo,
|
|---|
| 553 | &procInfo) == FALSE) {
|
|---|
| 554 |
|
|---|
| 555 | pproc->last_err = GetLastError();
|
|---|
| 556 | pproc->lerrno = E_FORK;
|
|---|
| 557 | fprintf(stderr, "process_begin: CreateProcess(%s, %s, ...) failed.\n",
|
|---|
| 558 | exec_path ? exec_path : "NULL", command_line);
|
|---|
| 559 | if (envblk) free(envblk);
|
|---|
| 560 | free( command_line );
|
|---|
| 561 | return(-1);
|
|---|
| 562 | }
|
|---|
| 563 | }
|
|---|
| 564 |
|
|---|
| 565 | pproc->pid = (int)procInfo.hProcess;
|
|---|
| 566 | /* Close the thread handle -- we'll just watch the process */
|
|---|
| 567 | CloseHandle(procInfo.hThread);
|
|---|
| 568 |
|
|---|
| 569 | /* Close the halves of the pipes we don't need */
|
|---|
| 570 | CloseHandle((HANDLE)pproc->sv_stdin[1]);
|
|---|
| 571 | CloseHandle((HANDLE)pproc->sv_stdout[1]);
|
|---|
| 572 | CloseHandle((HANDLE)pproc->sv_stderr[1]);
|
|---|
| 573 | pproc->sv_stdin[1] = 0;
|
|---|
| 574 | pproc->sv_stdout[1] = 0;
|
|---|
| 575 | pproc->sv_stderr[1] = 0;
|
|---|
| 576 |
|
|---|
| 577 | free( command_line );
|
|---|
| 578 | if (envblk) free(envblk);
|
|---|
| 579 | pproc->lerrno=0;
|
|---|
| 580 | return 0;
|
|---|
| 581 | }
|
|---|
| 582 |
|
|---|
| 583 |
|
|---|
| 584 |
|
|---|
| 585 | static DWORD
|
|---|
| 586 | proc_stdin_thread(sub_process *pproc)
|
|---|
| 587 | {
|
|---|
| 588 | DWORD in_done;
|
|---|
| 589 | for (;;) {
|
|---|
| 590 | if (WriteFile( (HANDLE) pproc->sv_stdin[0], pproc->inp, pproc->incnt,
|
|---|
| 591 | &in_done, NULL) == FALSE)
|
|---|
| 592 | _endthreadex(0);
|
|---|
| 593 | // This if should never be true for anonymous pipes, but gives
|
|---|
| 594 | // us a chance to change I/O mechanisms later
|
|---|
| 595 | if (in_done < pproc->incnt) {
|
|---|
| 596 | pproc->incnt -= in_done;
|
|---|
| 597 | pproc->inp += in_done;
|
|---|
| 598 | } else {
|
|---|
| 599 | _endthreadex(0);
|
|---|
| 600 | }
|
|---|
| 601 | }
|
|---|
| 602 | return 0; // for compiler warnings only.. not reached
|
|---|
| 603 | }
|
|---|
| 604 |
|
|---|
| 605 | static DWORD
|
|---|
| 606 | proc_stdout_thread(sub_process *pproc)
|
|---|
| 607 | {
|
|---|
| 608 | DWORD bufsize = 1024;
|
|---|
| 609 | char c;
|
|---|
| 610 | DWORD nread;
|
|---|
| 611 | pproc->outp = malloc(bufsize);
|
|---|
| 612 | if (pproc->outp == NULL)
|
|---|
| 613 | _endthreadex(0);
|
|---|
| 614 | pproc->outcnt = 0;
|
|---|
| 615 |
|
|---|
| 616 | for (;;) {
|
|---|
| 617 | if (ReadFile( (HANDLE)pproc->sv_stdout[0], &c, 1, &nread, NULL)
|
|---|
| 618 | == FALSE) {
|
|---|
| 619 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 620 | _endthreadex(0);
|
|---|
| 621 | }
|
|---|
| 622 | if (nread == 0)
|
|---|
| 623 | _endthreadex(0);
|
|---|
| 624 | if (pproc->outcnt + nread > bufsize) {
|
|---|
| 625 | bufsize += nread + 512;
|
|---|
| 626 | pproc->outp = realloc(pproc->outp, bufsize);
|
|---|
| 627 | if (pproc->outp == NULL) {
|
|---|
| 628 | pproc->outcnt = 0;
|
|---|
| 629 | _endthreadex(0);
|
|---|
| 630 | }
|
|---|
| 631 | }
|
|---|
| 632 | pproc->outp[pproc->outcnt++] = c;
|
|---|
| 633 | }
|
|---|
| 634 | return 0;
|
|---|
| 635 | }
|
|---|
| 636 |
|
|---|
| 637 | static DWORD
|
|---|
| 638 | proc_stderr_thread(sub_process *pproc)
|
|---|
| 639 | {
|
|---|
| 640 | DWORD bufsize = 1024;
|
|---|
| 641 | char c;
|
|---|
| 642 | DWORD nread;
|
|---|
| 643 | pproc->errp = malloc(bufsize);
|
|---|
| 644 | if (pproc->errp == NULL)
|
|---|
| 645 | _endthreadex(0);
|
|---|
| 646 | pproc->errcnt = 0;
|
|---|
| 647 |
|
|---|
| 648 | for (;;) {
|
|---|
| 649 | if (ReadFile( (HANDLE)pproc->sv_stderr[0], &c, 1, &nread, NULL) == FALSE) {
|
|---|
| 650 | map_windows32_error_to_string(GetLastError());
|
|---|
| 651 | _endthreadex(0);
|
|---|
| 652 | }
|
|---|
| 653 | if (nread == 0)
|
|---|
| 654 | _endthreadex(0);
|
|---|
| 655 | if (pproc->errcnt + nread > bufsize) {
|
|---|
| 656 | bufsize += nread + 512;
|
|---|
| 657 | pproc->errp = realloc(pproc->errp, bufsize);
|
|---|
| 658 | if (pproc->errp == NULL) {
|
|---|
| 659 | pproc->errcnt = 0;
|
|---|
| 660 | _endthreadex(0);
|
|---|
| 661 | }
|
|---|
| 662 | }
|
|---|
| 663 | pproc->errp[pproc->errcnt++] = c;
|
|---|
| 664 | }
|
|---|
| 665 | return 0;
|
|---|
| 666 | }
|
|---|
| 667 |
|
|---|
| 668 |
|
|---|
| 669 | /*
|
|---|
| 670 | * Purpose: collects output from child process and returns results
|
|---|
| 671 | *
|
|---|
| 672 | * Description:
|
|---|
| 673 | *
|
|---|
| 674 | * Returns:
|
|---|
| 675 | *
|
|---|
| 676 | * Notes/Dependencies:
|
|---|
| 677 | */
|
|---|
| 678 | long
|
|---|
| 679 | process_pipe_io(
|
|---|
| 680 | HANDLE proc,
|
|---|
| 681 | char *stdin_data,
|
|---|
| 682 | int stdin_data_len)
|
|---|
| 683 | {
|
|---|
| 684 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 685 | bool_t stdin_eof = FALSE, stdout_eof = FALSE, stderr_eof = FALSE;
|
|---|
| 686 | HANDLE childhand = (HANDLE) pproc->pid;
|
|---|
| 687 | HANDLE tStdin = NULL, tStdout = NULL, tStderr = NULL;
|
|---|
| 688 | unsigned int dwStdin, dwStdout, dwStderr;
|
|---|
| 689 | HANDLE wait_list[4];
|
|---|
| 690 | DWORD wait_count;
|
|---|
| 691 | DWORD wait_return;
|
|---|
| 692 | HANDLE ready_hand;
|
|---|
| 693 | bool_t child_dead = FALSE;
|
|---|
| 694 | BOOL GetExitCodeResult;
|
|---|
| 695 |
|
|---|
| 696 | /*
|
|---|
| 697 | * Create stdin thread, if needed
|
|---|
| 698 | */
|
|---|
| 699 | pproc->inp = stdin_data;
|
|---|
| 700 | pproc->incnt = stdin_data_len;
|
|---|
| 701 | if (!pproc->inp) {
|
|---|
| 702 | stdin_eof = TRUE;
|
|---|
| 703 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 704 | pproc->sv_stdin[0] = 0;
|
|---|
| 705 | } else {
|
|---|
| 706 | tStdin = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 707 | (unsigned (__stdcall *) (void *))proc_stdin_thread,
|
|---|
| 708 | pproc, 0, &dwStdin);
|
|---|
| 709 | if (tStdin == 0) {
|
|---|
| 710 | pproc->last_err = GetLastError();
|
|---|
| 711 | pproc->lerrno = E_SCALL;
|
|---|
| 712 | goto done;
|
|---|
| 713 | }
|
|---|
| 714 | }
|
|---|
| 715 |
|
|---|
| 716 | /*
|
|---|
| 717 | * Assume child will produce stdout and stderr
|
|---|
| 718 | */
|
|---|
| 719 | tStdout = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 720 | (unsigned (__stdcall *) (void *))proc_stdout_thread, pproc, 0,
|
|---|
| 721 | &dwStdout);
|
|---|
| 722 | tStderr = (HANDLE) _beginthreadex( 0, 1024,
|
|---|
| 723 | (unsigned (__stdcall *) (void *))proc_stderr_thread, pproc, 0,
|
|---|
| 724 | &dwStderr);
|
|---|
| 725 |
|
|---|
| 726 | if (tStdout == 0 || tStderr == 0) {
|
|---|
| 727 |
|
|---|
| 728 | pproc->last_err = GetLastError();
|
|---|
| 729 | pproc->lerrno = E_SCALL;
|
|---|
| 730 | goto done;
|
|---|
| 731 | }
|
|---|
| 732 |
|
|---|
| 733 |
|
|---|
| 734 | /*
|
|---|
| 735 | * Wait for all I/O to finish and for the child process to exit
|
|---|
| 736 | */
|
|---|
| 737 |
|
|---|
| 738 | while (!stdin_eof || !stdout_eof || !stderr_eof || !child_dead) {
|
|---|
| 739 | wait_count = 0;
|
|---|
| 740 | if (!stdin_eof) {
|
|---|
| 741 | wait_list[wait_count++] = tStdin;
|
|---|
| 742 | }
|
|---|
| 743 | if (!stdout_eof) {
|
|---|
| 744 | wait_list[wait_count++] = tStdout;
|
|---|
| 745 | }
|
|---|
| 746 | if (!stderr_eof) {
|
|---|
| 747 | wait_list[wait_count++] = tStderr;
|
|---|
| 748 | }
|
|---|
| 749 | if (!child_dead) {
|
|---|
| 750 | wait_list[wait_count++] = childhand;
|
|---|
| 751 | }
|
|---|
| 752 |
|
|---|
| 753 | wait_return = WaitForMultipleObjects(wait_count, wait_list,
|
|---|
| 754 | FALSE, /* don't wait for all: one ready will do */
|
|---|
| 755 | child_dead? 1000 :INFINITE); /* after the child dies, subthreads have
|
|---|
| 756 | one second to collect all remaining output */
|
|---|
| 757 |
|
|---|
| 758 | if (wait_return == WAIT_FAILED) {
|
|---|
| 759 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 760 | pproc->last_err = GetLastError();
|
|---|
| 761 | pproc->lerrno = E_SCALL;
|
|---|
| 762 | goto done;
|
|---|
| 763 | }
|
|---|
| 764 |
|
|---|
| 765 | ready_hand = wait_list[wait_return - WAIT_OBJECT_0];
|
|---|
| 766 |
|
|---|
| 767 | if (ready_hand == tStdin) {
|
|---|
| 768 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 769 | pproc->sv_stdin[0] = 0;
|
|---|
| 770 | CloseHandle(tStdin);
|
|---|
| 771 | tStdin = 0;
|
|---|
| 772 | stdin_eof = TRUE;
|
|---|
| 773 |
|
|---|
| 774 | } else if (ready_hand == tStdout) {
|
|---|
| 775 |
|
|---|
| 776 | CloseHandle((HANDLE)pproc->sv_stdout[0]);
|
|---|
| 777 | pproc->sv_stdout[0] = 0;
|
|---|
| 778 | CloseHandle(tStdout);
|
|---|
| 779 | tStdout = 0;
|
|---|
| 780 | stdout_eof = TRUE;
|
|---|
| 781 |
|
|---|
| 782 | } else if (ready_hand == tStderr) {
|
|---|
| 783 |
|
|---|
| 784 | CloseHandle((HANDLE)pproc->sv_stderr[0]);
|
|---|
| 785 | pproc->sv_stderr[0] = 0;
|
|---|
| 786 | CloseHandle(tStderr);
|
|---|
| 787 | tStderr = 0;
|
|---|
| 788 | stderr_eof = TRUE;
|
|---|
| 789 |
|
|---|
| 790 | } else if (ready_hand == childhand) {
|
|---|
| 791 |
|
|---|
| 792 | DWORD ierr;
|
|---|
| 793 | GetExitCodeResult = GetExitCodeProcess(childhand, &ierr);
|
|---|
| 794 | if (ierr == CONTROL_C_EXIT) {
|
|---|
| 795 | pproc->signal = SIGINT;
|
|---|
| 796 | } else {
|
|---|
| 797 | pproc->exit_code = ierr;
|
|---|
| 798 | }
|
|---|
| 799 | if (GetExitCodeResult == FALSE) {
|
|---|
| 800 | pproc->last_err = GetLastError();
|
|---|
| 801 | pproc->lerrno = E_SCALL;
|
|---|
| 802 | goto done;
|
|---|
| 803 | }
|
|---|
| 804 | child_dead = TRUE;
|
|---|
| 805 |
|
|---|
| 806 | } else {
|
|---|
| 807 |
|
|---|
| 808 | /* ?? Got back a handle we didn't query ?? */
|
|---|
| 809 | pproc->last_err = 0;
|
|---|
| 810 | pproc->lerrno = E_FAIL;
|
|---|
| 811 | goto done;
|
|---|
| 812 | }
|
|---|
| 813 | }
|
|---|
| 814 |
|
|---|
| 815 | done:
|
|---|
| 816 | if (tStdin != 0)
|
|---|
| 817 | CloseHandle(tStdin);
|
|---|
| 818 | if (tStdout != 0)
|
|---|
| 819 | CloseHandle(tStdout);
|
|---|
| 820 | if (tStderr != 0)
|
|---|
| 821 | CloseHandle(tStderr);
|
|---|
| 822 |
|
|---|
| 823 | if (pproc->lerrno)
|
|---|
| 824 | return(-1);
|
|---|
| 825 | else
|
|---|
| 826 | return(0);
|
|---|
| 827 |
|
|---|
| 828 | }
|
|---|
| 829 |
|
|---|
| 830 | /*
|
|---|
| 831 | * Purpose: collects output from child process and returns results
|
|---|
| 832 | *
|
|---|
| 833 | * Description:
|
|---|
| 834 | *
|
|---|
| 835 | * Returns:
|
|---|
| 836 | *
|
|---|
| 837 | * Notes/Dependencies:
|
|---|
| 838 | */
|
|---|
| 839 | long
|
|---|
| 840 | process_file_io(
|
|---|
| 841 | HANDLE proc)
|
|---|
| 842 | {
|
|---|
| 843 | sub_process *pproc;
|
|---|
| 844 | HANDLE childhand;
|
|---|
| 845 | DWORD wait_return;
|
|---|
| 846 | BOOL GetExitCodeResult;
|
|---|
| 847 | DWORD ierr;
|
|---|
| 848 |
|
|---|
| 849 | if (proc == NULL)
|
|---|
| 850 | pproc = process_wait_for_any_private();
|
|---|
| 851 | else
|
|---|
| 852 | pproc = (sub_process *)proc;
|
|---|
| 853 |
|
|---|
| 854 | /* some sort of internal error */
|
|---|
| 855 | if (!pproc)
|
|---|
| 856 | return -1;
|
|---|
| 857 |
|
|---|
| 858 | childhand = (HANDLE) pproc->pid;
|
|---|
| 859 |
|
|---|
| 860 | /*
|
|---|
| 861 | * This function is poorly named, and could also be used just to wait
|
|---|
| 862 | * for child death if you're doing your own pipe I/O. If that is
|
|---|
| 863 | * the case, close the pipe handles here.
|
|---|
| 864 | */
|
|---|
| 865 | if (pproc->sv_stdin[0]) {
|
|---|
| 866 | CloseHandle((HANDLE)pproc->sv_stdin[0]);
|
|---|
| 867 | pproc->sv_stdin[0] = 0;
|
|---|
| 868 | }
|
|---|
| 869 | if (pproc->sv_stdout[0]) {
|
|---|
| 870 | CloseHandle((HANDLE)pproc->sv_stdout[0]);
|
|---|
| 871 | pproc->sv_stdout[0] = 0;
|
|---|
| 872 | }
|
|---|
| 873 | if (pproc->sv_stderr[0]) {
|
|---|
| 874 | CloseHandle((HANDLE)pproc->sv_stderr[0]);
|
|---|
| 875 | pproc->sv_stderr[0] = 0;
|
|---|
| 876 | }
|
|---|
| 877 |
|
|---|
| 878 | /*
|
|---|
| 879 | * Wait for the child process to exit
|
|---|
| 880 | */
|
|---|
| 881 |
|
|---|
| 882 | wait_return = WaitForSingleObject(childhand, INFINITE);
|
|---|
| 883 |
|
|---|
| 884 | if (wait_return != WAIT_OBJECT_0) {
|
|---|
| 885 | /* map_windows32_error_to_string(GetLastError());*/
|
|---|
| 886 | pproc->last_err = GetLastError();
|
|---|
| 887 | pproc->lerrno = E_SCALL;
|
|---|
| 888 | goto done2;
|
|---|
| 889 | }
|
|---|
| 890 |
|
|---|
| 891 | GetExitCodeResult = GetExitCodeProcess(childhand, &ierr);
|
|---|
| 892 | if (ierr == CONTROL_C_EXIT) {
|
|---|
| 893 | pproc->signal = SIGINT;
|
|---|
| 894 | } else {
|
|---|
| 895 | pproc->exit_code = ierr;
|
|---|
| 896 | }
|
|---|
| 897 | if (GetExitCodeResult == FALSE) {
|
|---|
| 898 | pproc->last_err = GetLastError();
|
|---|
| 899 | pproc->lerrno = E_SCALL;
|
|---|
| 900 | }
|
|---|
| 901 |
|
|---|
| 902 | done2:
|
|---|
| 903 | if (pproc->lerrno)
|
|---|
| 904 | return(-1);
|
|---|
| 905 | else
|
|---|
| 906 | return(0);
|
|---|
| 907 |
|
|---|
| 908 | }
|
|---|
| 909 |
|
|---|
| 910 | /*
|
|---|
| 911 | * Description: Clean up any leftover handles, etc. It is up to the
|
|---|
| 912 | * caller to manage and free the input, ouput, and stderr buffers.
|
|---|
| 913 | */
|
|---|
| 914 | void
|
|---|
| 915 | process_cleanup(
|
|---|
| 916 | HANDLE proc)
|
|---|
| 917 | {
|
|---|
| 918 | sub_process *pproc = (sub_process *)proc;
|
|---|
| 919 | int i;
|
|---|
| 920 |
|
|---|
| 921 | if (pproc->using_pipes) {
|
|---|
| 922 | for (i= 0; i <= 1; i++) {
|
|---|
| 923 | if ((HANDLE)pproc->sv_stdin[i])
|
|---|
| 924 | CloseHandle((HANDLE)pproc->sv_stdin[i]);
|
|---|
| 925 | if ((HANDLE)pproc->sv_stdout[i])
|
|---|
| 926 | CloseHandle((HANDLE)pproc->sv_stdout[i]);
|
|---|
| 927 | if ((HANDLE)pproc->sv_stderr[i])
|
|---|
| 928 | CloseHandle((HANDLE)pproc->sv_stderr[i]);
|
|---|
| 929 | }
|
|---|
| 930 | }
|
|---|
| 931 | if ((HANDLE)pproc->pid)
|
|---|
| 932 | CloseHandle((HANDLE)pproc->pid);
|
|---|
| 933 |
|
|---|
| 934 | free(pproc);
|
|---|
| 935 | }
|
|---|
| 936 |
|
|---|
| 937 |
|
|---|
| 938 | /*
|
|---|
| 939 | * Description:
|
|---|
| 940 | * Create a command line buffer to pass to CreateProcess
|
|---|
| 941 | *
|
|---|
| 942 | * Returns: the buffer or NULL for failure
|
|---|
| 943 | * Shell case: sh_name a:/full/path/to/script argv[1] argv[2] ...
|
|---|
| 944 | * Otherwise: argv[0] argv[1] argv[2] ...
|
|---|
| 945 | *
|
|---|
| 946 | * Notes/Dependencies:
|
|---|
| 947 | * CreateProcess does not take an argv, so this command creates a
|
|---|
| 948 | * command line for the executable.
|
|---|
| 949 | */
|
|---|
| 950 |
|
|---|
| 951 | static char *
|
|---|
| 952 | make_command_line( char *shell_name, char *full_exec_path, char **argv)
|
|---|
| 953 | {
|
|---|
| 954 | int argc = 0;
|
|---|
| 955 | char** argvi;
|
|---|
| 956 | int* enclose_in_quotes = NULL;
|
|---|
| 957 | int* enclose_in_quotes_i;
|
|---|
| 958 | unsigned int bytes_required = 0;
|
|---|
| 959 | char* command_line;
|
|---|
| 960 | char* command_line_i;
|
|---|
| 961 | int cygwin_mode = 0; /* HAVE_CYGWIN_SHELL */
|
|---|
| 962 | int have_sh = 0; /* HAVE_CYGWIN_SHELL */
|
|---|
| 963 |
|
|---|
| 964 | #ifdef HAVE_CYGWIN_SHELL
|
|---|
| 965 | have_sh = (shell_name != NULL || strstr(full_exec_path, "sh.exe"));
|
|---|
| 966 | cygwin_mode = 1;
|
|---|
| 967 | #endif
|
|---|
| 968 |
|
|---|
| 969 | if (shell_name && full_exec_path) {
|
|---|
| 970 | bytes_required
|
|---|
| 971 | = strlen(shell_name) + 1 + strlen(full_exec_path);
|
|---|
| 972 | /*
|
|---|
| 973 | * Skip argv[0] if any, when shell_name is given.
|
|---|
| 974 | */
|
|---|
| 975 | if (*argv) argv++;
|
|---|
| 976 | /*
|
|---|
| 977 | * Add one for the intervening space.
|
|---|
| 978 | */
|
|---|
| 979 | if (*argv) bytes_required++;
|
|---|
| 980 | }
|
|---|
| 981 |
|
|---|
| 982 | argvi = argv;
|
|---|
| 983 | while (*(argvi++)) argc++;
|
|---|
| 984 |
|
|---|
| 985 | if (argc) {
|
|---|
| 986 | enclose_in_quotes = (int*) calloc(1, argc * sizeof(int));
|
|---|
| 987 |
|
|---|
| 988 | if (!enclose_in_quotes) {
|
|---|
| 989 | return NULL;
|
|---|
| 990 | }
|
|---|
| 991 | }
|
|---|
| 992 |
|
|---|
| 993 | /* We have to make one pass through each argv[i] to see if we need
|
|---|
| 994 | * to enclose it in ", so we might as well figure out how much
|
|---|
| 995 | * memory we'll need on the same pass.
|
|---|
| 996 | */
|
|---|
| 997 |
|
|---|
| 998 | argvi = argv;
|
|---|
| 999 | enclose_in_quotes_i = enclose_in_quotes;
|
|---|
| 1000 | while(*argvi) {
|
|---|
| 1001 | char* p = *argvi;
|
|---|
| 1002 | unsigned int backslash_count = 0;
|
|---|
| 1003 |
|
|---|
| 1004 | /*
|
|---|
| 1005 | * We have to enclose empty arguments in ".
|
|---|
| 1006 | */
|
|---|
| 1007 | if (!(*p)) *enclose_in_quotes_i = 1;
|
|---|
| 1008 |
|
|---|
| 1009 | while(*p) {
|
|---|
| 1010 | switch (*p) {
|
|---|
| 1011 | case '\"':
|
|---|
| 1012 | /*
|
|---|
| 1013 | * We have to insert a backslash for each "
|
|---|
| 1014 | * and each \ that precedes the ".
|
|---|
| 1015 | */
|
|---|
| 1016 | bytes_required += (backslash_count + 1);
|
|---|
| 1017 | backslash_count = 0;
|
|---|
| 1018 | break;
|
|---|
| 1019 |
|
|---|
| 1020 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1021 | case '\\':
|
|---|
| 1022 | backslash_count++;
|
|---|
| 1023 | break;
|
|---|
| 1024 | #endif
|
|---|
| 1025 | /*
|
|---|
| 1026 | * At one time we set *enclose_in_quotes_i for '*' or '?' to suppress
|
|---|
| 1027 | * wildcard expansion in programs linked with MSVC's SETARGV.OBJ so
|
|---|
| 1028 | * that argv in always equals argv out. This was removed. Say you have
|
|---|
| 1029 | * such a program named glob.exe. You enter
|
|---|
| 1030 | * glob '*'
|
|---|
| 1031 | * at the sh command prompt. Obviously the intent is to make glob do the
|
|---|
| 1032 | * wildcarding instead of sh. If we set *enclose_in_quotes_i for '*' or '?',
|
|---|
| 1033 | * then the command line that glob would see would be
|
|---|
| 1034 | * glob "*"
|
|---|
| 1035 | * and the _setargv in SETARGV.OBJ would _not_ expand the *.
|
|---|
| 1036 | */
|
|---|
| 1037 | case ' ':
|
|---|
| 1038 | case '\t':
|
|---|
| 1039 | *enclose_in_quotes_i = 1;
|
|---|
| 1040 | /* fall through */
|
|---|
| 1041 |
|
|---|
| 1042 | default:
|
|---|
| 1043 | backslash_count = 0;
|
|---|
| 1044 | break;
|
|---|
| 1045 | }
|
|---|
| 1046 |
|
|---|
| 1047 | /*
|
|---|
| 1048 | * Add one for each character in argv[i].
|
|---|
| 1049 | */
|
|---|
| 1050 | bytes_required++;
|
|---|
| 1051 |
|
|---|
| 1052 | p++;
|
|---|
| 1053 | }
|
|---|
| 1054 |
|
|---|
| 1055 | if (*enclose_in_quotes_i) {
|
|---|
| 1056 | /*
|
|---|
| 1057 | * Add one for each enclosing ",
|
|---|
| 1058 | * and one for each \ that precedes the
|
|---|
| 1059 | * closing ".
|
|---|
| 1060 | */
|
|---|
| 1061 | bytes_required += (backslash_count + 2);
|
|---|
| 1062 | }
|
|---|
| 1063 |
|
|---|
| 1064 | /*
|
|---|
| 1065 | * Add one for the intervening space.
|
|---|
| 1066 | */
|
|---|
| 1067 | if (*(++argvi)) bytes_required++;
|
|---|
| 1068 | enclose_in_quotes_i++;
|
|---|
| 1069 | }
|
|---|
| 1070 |
|
|---|
| 1071 | /*
|
|---|
| 1072 | * Add one for the terminating NULL.
|
|---|
| 1073 | */
|
|---|
| 1074 | bytes_required++;
|
|---|
| 1075 |
|
|---|
| 1076 | command_line = (char*) malloc(bytes_required);
|
|---|
| 1077 |
|
|---|
| 1078 | if (!command_line) {
|
|---|
| 1079 | if (enclose_in_quotes) free(enclose_in_quotes);
|
|---|
| 1080 | return NULL;
|
|---|
| 1081 | }
|
|---|
| 1082 |
|
|---|
| 1083 | command_line_i = command_line;
|
|---|
| 1084 |
|
|---|
| 1085 | if (shell_name && full_exec_path) {
|
|---|
| 1086 | while(*shell_name) {
|
|---|
| 1087 | *(command_line_i++) = *(shell_name++);
|
|---|
| 1088 | }
|
|---|
| 1089 |
|
|---|
| 1090 | *(command_line_i++) = ' ';
|
|---|
| 1091 |
|
|---|
| 1092 | while(*full_exec_path) {
|
|---|
| 1093 | *(command_line_i++) = *(full_exec_path++);
|
|---|
| 1094 | }
|
|---|
| 1095 |
|
|---|
| 1096 | if (*argv) {
|
|---|
| 1097 | *(command_line_i++) = ' ';
|
|---|
| 1098 | }
|
|---|
| 1099 | }
|
|---|
| 1100 |
|
|---|
| 1101 | argvi = argv;
|
|---|
| 1102 | enclose_in_quotes_i = enclose_in_quotes;
|
|---|
| 1103 |
|
|---|
| 1104 | while(*argvi) {
|
|---|
| 1105 | char* p = *argvi;
|
|---|
| 1106 | unsigned int backslash_count = 0;
|
|---|
| 1107 |
|
|---|
| 1108 | if (*enclose_in_quotes_i) {
|
|---|
| 1109 | *(command_line_i++) = '\"';
|
|---|
| 1110 | }
|
|---|
| 1111 |
|
|---|
| 1112 | while(*p) {
|
|---|
| 1113 | if (*p == '\"') {
|
|---|
| 1114 | if (cygwin_mode && have_sh) { /* HAVE_CYGWIN_SHELL */
|
|---|
| 1115 | /* instead of a \", cygwin likes "" */
|
|---|
| 1116 | *(command_line_i++) = '\"';
|
|---|
| 1117 | } else {
|
|---|
| 1118 |
|
|---|
| 1119 | /*
|
|---|
| 1120 | * We have to insert a backslash for the "
|
|---|
| 1121 | * and each \ that precedes the ".
|
|---|
| 1122 | */
|
|---|
| 1123 | backslash_count++;
|
|---|
| 1124 |
|
|---|
| 1125 | while(backslash_count) {
|
|---|
| 1126 | *(command_line_i++) = '\\';
|
|---|
| 1127 | backslash_count--;
|
|---|
| 1128 | };
|
|---|
| 1129 | }
|
|---|
| 1130 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1131 | } else if (*p == '\\') {
|
|---|
| 1132 | backslash_count++;
|
|---|
| 1133 | } else {
|
|---|
| 1134 | backslash_count = 0;
|
|---|
| 1135 | #endif
|
|---|
| 1136 | }
|
|---|
| 1137 |
|
|---|
| 1138 | /*
|
|---|
| 1139 | * Copy the character.
|
|---|
| 1140 | */
|
|---|
| 1141 | *(command_line_i++) = *(p++);
|
|---|
| 1142 | }
|
|---|
| 1143 |
|
|---|
| 1144 | if (*enclose_in_quotes_i) {
|
|---|
| 1145 | #if !defined(HAVE_MKS_SHELL) && !defined(HAVE_CYGWIN_SHELL)
|
|---|
| 1146 | /*
|
|---|
| 1147 | * Add one \ for each \ that precedes the
|
|---|
| 1148 | * closing ".
|
|---|
| 1149 | */
|
|---|
| 1150 | while(backslash_count--) {
|
|---|
| 1151 | *(command_line_i++) = '\\';
|
|---|
| 1152 | };
|
|---|
| 1153 | #endif
|
|---|
| 1154 | *(command_line_i++) = '\"';
|
|---|
| 1155 | }
|
|---|
| 1156 |
|
|---|
| 1157 | /*
|
|---|
| 1158 | * Append an intervening space.
|
|---|
| 1159 | */
|
|---|
| 1160 | if (*(++argvi)) {
|
|---|
| 1161 | *(command_line_i++) = ' ';
|
|---|
| 1162 | }
|
|---|
| 1163 |
|
|---|
| 1164 | enclose_in_quotes_i++;
|
|---|
| 1165 | }
|
|---|
| 1166 |
|
|---|
| 1167 | /*
|
|---|
| 1168 | * Append the terminating NULL.
|
|---|
| 1169 | */
|
|---|
| 1170 | *command_line_i = '\0';
|
|---|
| 1171 |
|
|---|
| 1172 | if (enclose_in_quotes) free(enclose_in_quotes);
|
|---|
| 1173 | return command_line;
|
|---|
| 1174 | }
|
|---|
| 1175 |
|
|---|
| 1176 | /*
|
|---|
| 1177 | * Description: Given an argv and optional envp, launch the process
|
|---|
| 1178 | * using the default stdin, stdout, and stderr handles.
|
|---|
| 1179 | * Also, register process so that process_wait_for_any_private()
|
|---|
| 1180 | * can be used via process_file_io(NULL) or
|
|---|
| 1181 | * process_wait_for_any().
|
|---|
| 1182 | *
|
|---|
| 1183 | * Returns:
|
|---|
| 1184 | *
|
|---|
| 1185 | * Notes/Dependencies:
|
|---|
| 1186 | */
|
|---|
| 1187 | HANDLE
|
|---|
| 1188 | process_easy(
|
|---|
| 1189 | char **argv,
|
|---|
| 1190 | char **envp)
|
|---|
| 1191 | {
|
|---|
| 1192 | HANDLE hIn;
|
|---|
| 1193 | HANDLE hOut;
|
|---|
| 1194 | HANDLE hErr;
|
|---|
| 1195 | HANDLE hProcess;
|
|---|
| 1196 |
|
|---|
| 1197 | if (proc_index >= MAXIMUM_WAIT_OBJECTS) {
|
|---|
| 1198 | DB (DB_JOBS, ("process_easy: All process slots used up\n"));
|
|---|
| 1199 | return INVALID_HANDLE_VALUE;
|
|---|
| 1200 | }
|
|---|
| 1201 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1202 | GetStdHandle(STD_INPUT_HANDLE),
|
|---|
| 1203 | GetCurrentProcess(),
|
|---|
| 1204 | &hIn,
|
|---|
| 1205 | 0,
|
|---|
| 1206 | TRUE,
|
|---|
| 1207 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1208 | fprintf(stderr,
|
|---|
| 1209 | "process_easy: DuplicateHandle(In) failed (e=%ld)\n",
|
|---|
| 1210 | GetLastError());
|
|---|
| 1211 | return INVALID_HANDLE_VALUE;
|
|---|
| 1212 | }
|
|---|
| 1213 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1214 | GetStdHandle(STD_OUTPUT_HANDLE),
|
|---|
| 1215 | GetCurrentProcess(),
|
|---|
| 1216 | &hOut,
|
|---|
| 1217 | 0,
|
|---|
| 1218 | TRUE,
|
|---|
| 1219 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1220 | fprintf(stderr,
|
|---|
| 1221 | "process_easy: DuplicateHandle(Out) failed (e=%ld)\n",
|
|---|
| 1222 | GetLastError());
|
|---|
| 1223 | return INVALID_HANDLE_VALUE;
|
|---|
| 1224 | }
|
|---|
| 1225 | if (DuplicateHandle(GetCurrentProcess(),
|
|---|
| 1226 | GetStdHandle(STD_ERROR_HANDLE),
|
|---|
| 1227 | GetCurrentProcess(),
|
|---|
| 1228 | &hErr,
|
|---|
| 1229 | 0,
|
|---|
| 1230 | TRUE,
|
|---|
| 1231 | DUPLICATE_SAME_ACCESS) == FALSE) {
|
|---|
| 1232 | fprintf(stderr,
|
|---|
| 1233 | "process_easy: DuplicateHandle(Err) failed (e=%ld)\n",
|
|---|
| 1234 | GetLastError());
|
|---|
| 1235 | return INVALID_HANDLE_VALUE;
|
|---|
| 1236 | }
|
|---|
| 1237 |
|
|---|
| 1238 | hProcess = process_init_fd(hIn, hOut, hErr);
|
|---|
| 1239 |
|
|---|
| 1240 | if (process_begin(hProcess, argv, envp, argv[0], NULL)) {
|
|---|
| 1241 | fake_exits_pending++;
|
|---|
| 1242 | /* process_begin() failed: make a note of that. */
|
|---|
| 1243 | if (!((sub_process*) hProcess)->last_err)
|
|---|
| 1244 | ((sub_process*) hProcess)->last_err = -1;
|
|---|
| 1245 | ((sub_process*) hProcess)->exit_code = process_last_err(hProcess);
|
|---|
| 1246 |
|
|---|
| 1247 | /* close up unused handles */
|
|---|
| 1248 | CloseHandle(hIn);
|
|---|
| 1249 | CloseHandle(hOut);
|
|---|
| 1250 | CloseHandle(hErr);
|
|---|
| 1251 | }
|
|---|
| 1252 |
|
|---|
| 1253 | process_register(hProcess);
|
|---|
| 1254 |
|
|---|
| 1255 | return hProcess;
|
|---|
| 1256 | }
|
|---|