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14 |
jlechner |
/* Utilities to execute a program in a subprocess (possibly linked by pipes
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with other subprocesses), and wait for it. Generic Win32 specialization.
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Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005
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Free Software Foundation, Inc.
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This file is part of the libiberty library.
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Libiberty is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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Libiberty is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with libiberty; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "pex-common.h"
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#include <windows.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_WAIT_H
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#include <sys/wait.h>
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#endif
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#include <process.h>
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#include <io.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/stat.h>
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/* mingw32 headers may not define the following. */
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#ifndef _P_WAIT
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# define _P_WAIT 0
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# define _P_NOWAIT 1
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# define _P_OVERLAY 2
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# define _P_NOWAITO 3
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# define _P_DETACH 4
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# define WAIT_CHILD 0
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# define WAIT_GRANDCHILD 1
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#endif
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#define MINGW_NAME "Minimalist GNU for Windows"
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#define MINGW_NAME_LEN (sizeof(MINGW_NAME) - 1)
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/* Ensure that the executable pathname uses Win32 backslashes. This
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is not necessary on NT, but on W9x, forward slashes causes
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failure of spawn* and exec* functions (and probably any function
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that calls CreateProcess) *iff* the executable pathname (argv[0])
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is a quoted string. And quoting is necessary in case a pathname
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contains embedded white space. You can't win. */
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static void
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backslashify (char *s)
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{
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while ((s = strchr (s, '/')) != NULL)
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*s = '\\';
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return;
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}
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/* This is a kludge to get around the Microsoft C spawn functions' propensity
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to remove the outermost set of double quotes from all arguments. */
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static const char * const *
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fix_argv (char * const *argvec)
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{
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char **argv;
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int i;
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char *command0;
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| 85 |
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/* See whether we need to change anything. */
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for (command0 = argvec[0]; *command0 != '\0'; command0++)
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if (*command0 == '/')
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break;
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if (*command0 == '\0')
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{
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for (i = 1; argvec[i] != NULL; i++)
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if (strpbrk (argvec[i], "\" \t") != NULL)
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break;
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| 95 |
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if (argvec[i] == NULL)
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| 96 |
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return (const char * const *) argvec;
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}
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for (i = 0; argvec[i] != NULL; i++)
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;
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argv = XNEWVEC (char *, i + 2);
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| 103 |
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argv++; /* Leave space at the beginning of argv
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for potential #! handling */
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for (i = 0; argvec[i] != NULL; i++)
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argv[i] = xstrdup (argvec[i]);
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argv[i] = NULL;
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backslashify (argv[0]);
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for (i = 1; argv[i] != 0; i++)
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{
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int len, j;
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char *temp, *newtemp;
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temp = argv[i];
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len = strlen (temp);
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for (j = 0; j < len; j++)
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{
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if (temp[j] == '"')
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{
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newtemp = XNEWVEC (char, len + 2);
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strncpy (newtemp, temp, j);
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newtemp [j] = '\\';
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strncpy (&newtemp [j+1], &temp [j], len-j);
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newtemp [len+1] = 0;
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temp = newtemp;
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len++;
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j++;
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}
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}
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| 134 |
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if (argv[i] != temp)
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{
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free (argv[i]);
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argv[i] = temp;
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}
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| 139 |
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}
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| 140 |
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| 141 |
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for (i = 0; argv[i] != 0; i++)
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{
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| 143 |
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if (strpbrk (argv[i], " \t"))
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| 144 |
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{
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| 145 |
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int len, trailing_backslash;
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| 146 |
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char *temp;
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| 147 |
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| 148 |
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len = strlen (argv[i]);
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| 149 |
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trailing_backslash = 0;
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| 150 |
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| 151 |
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/* There is an added complication when an arg with embedded white
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| 152 |
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space ends in a backslash (such as in the case of -iprefix arg
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passed to cpp). The resulting quoted strings gets misinterpreted
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by the command interpreter -- it thinks that the ending quote
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is escaped by the trailing backslash and things get confused.
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We handle this case by escaping the trailing backslash, provided
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| 157 |
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it was not escaped in the first place. */
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| 158 |
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if (len > 1
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&& argv[i][len-1] == '\\'
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&& argv[i][len-2] != '\\')
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{
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| 162 |
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trailing_backslash = 1;
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++len; /* to escape the final backslash. */
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}
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| 165 |
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len += 2; /* and for the enclosing quotes. */
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| 168 |
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temp = XNEWVEC (char, len + 1);
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temp[0] = '"';
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strcpy (temp + 1, argv[i]);
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if (trailing_backslash)
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temp[len - 2] = '\\';
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temp[len - 1] = '"';
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temp[len] = '\0';
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| 176 |
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free (argv[i]);
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argv[i] = temp;
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| 178 |
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}
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| 179 |
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}
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| 180 |
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| 181 |
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return (const char * const *) argv;
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| 182 |
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}
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| 183 |
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| 184 |
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static int pex_win32_open_read (struct pex_obj *, const char *, int);
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| 185 |
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static int pex_win32_open_write (struct pex_obj *, const char *, int);
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| 186 |
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static long pex_win32_exec_child (struct pex_obj *, int, const char *,
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char * const *, int, int, int,
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const char **, int *);
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| 189 |
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static int pex_win32_close (struct pex_obj *, int);
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| 190 |
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static int pex_win32_wait (struct pex_obj *, long, int *,
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| 191 |
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struct pex_time *, int, const char **, int *);
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| 192 |
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static int pex_win32_pipe (struct pex_obj *, int *, int);
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| 193 |
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static FILE *pex_win32_fdopenr (struct pex_obj *, int, int);
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| 194 |
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| 195 |
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/* The list of functions we pass to the common routines. */
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| 196 |
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| 197 |
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const struct pex_funcs funcs =
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| 198 |
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{
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| 199 |
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pex_win32_open_read,
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| 200 |
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pex_win32_open_write,
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| 201 |
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pex_win32_exec_child,
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| 202 |
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pex_win32_close,
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| 203 |
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pex_win32_wait,
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| 204 |
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pex_win32_pipe,
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| 205 |
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pex_win32_fdopenr,
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| 206 |
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NULL /* cleanup */
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| 207 |
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};
|
| 208 |
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|
|
| 209 |
|
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/* Return a newly initialized pex_obj structure. */
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| 210 |
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|
|
| 211 |
|
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struct pex_obj *
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| 212 |
|
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pex_init (int flags, const char *pname, const char *tempbase)
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| 213 |
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{
|
| 214 |
|
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return pex_init_common (flags, pname, tempbase, &funcs);
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| 215 |
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}
|
| 216 |
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| 217 |
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/* Open a file for reading. */
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| 218 |
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| 219 |
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static int
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| 220 |
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pex_win32_open_read (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name,
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| 221 |
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int binary)
|
| 222 |
|
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{
|
| 223 |
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return _open (name, _O_RDONLY | (binary ? _O_BINARY : _O_TEXT));
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| 224 |
|
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}
|
| 225 |
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| 226 |
|
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/* Open a file for writing. */
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| 227 |
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|
| 228 |
|
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static int
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| 229 |
|
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pex_win32_open_write (struct pex_obj *obj ATTRIBUTE_UNUSED, const char *name,
|
| 230 |
|
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int binary)
|
| 231 |
|
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{
|
| 232 |
|
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/* Note that we can't use O_EXCL here because gcc may have already
|
| 233 |
|
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created the temporary file via make_temp_file. */
|
| 234 |
|
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return _open (name,
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| 235 |
|
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(_O_WRONLY | _O_CREAT | _O_TRUNC
|
| 236 |
|
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| (binary ? _O_BINARY : _O_TEXT)),
|
| 237 |
|
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_S_IREAD | _S_IWRITE);
|
| 238 |
|
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}
|
| 239 |
|
|
|
| 240 |
|
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/* Close a file. */
|
| 241 |
|
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|
| 242 |
|
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static int
|
| 243 |
|
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pex_win32_close (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd)
|
| 244 |
|
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{
|
| 245 |
|
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return _close (fd);
|
| 246 |
|
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}
|
| 247 |
|
|
|
| 248 |
|
|
#ifdef USE_MINGW_MSYS
|
| 249 |
|
|
static const char *mingw_keys[] = {"SOFTWARE", "Microsoft", "Windows", "CurrentVersion", "Uninstall", NULL};
|
| 250 |
|
|
|
| 251 |
|
|
/* Tack the executable on the end of a (possibly slash terminated) buffer
|
| 252 |
|
|
and convert everything to \. */
|
| 253 |
|
|
static const char *
|
| 254 |
|
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tack_on_executable (char *buf, const char *executable)
|
| 255 |
|
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{
|
| 256 |
|
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char *p = strchr (buf, '\0');
|
| 257 |
|
|
if (p > buf && (p[-1] == '\\' || p[-1] == '/'))
|
| 258 |
|
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p[-1] = '\0';
|
| 259 |
|
|
backslashify (strcat (buf, executable));
|
| 260 |
|
|
return buf;
|
| 261 |
|
|
}
|
| 262 |
|
|
|
| 263 |
|
|
/* Walk down a registry hierarchy until the end. Return the key. */
|
| 264 |
|
|
static HKEY
|
| 265 |
|
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openkey (HKEY hStart, const char *keys[])
|
| 266 |
|
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{
|
| 267 |
|
|
HKEY hKey, hTmp;
|
| 268 |
|
|
for (hKey = hStart; *keys; keys++)
|
| 269 |
|
|
{
|
| 270 |
|
|
LONG res;
|
| 271 |
|
|
hTmp = hKey;
|
| 272 |
|
|
res = RegOpenKey (hTmp, *keys, &hKey);
|
| 273 |
|
|
|
| 274 |
|
|
if (hTmp != HKEY_LOCAL_MACHINE)
|
| 275 |
|
|
RegCloseKey (hTmp);
|
| 276 |
|
|
|
| 277 |
|
|
if (res != ERROR_SUCCESS)
|
| 278 |
|
|
return NULL;
|
| 279 |
|
|
}
|
| 280 |
|
|
return hKey;
|
| 281 |
|
|
}
|
| 282 |
|
|
|
| 283 |
|
|
/* Return the "mingw root" as derived from the mingw uninstall information. */
|
| 284 |
|
|
static const char *
|
| 285 |
|
|
mingw_rootify (const char *executable)
|
| 286 |
|
|
{
|
| 287 |
|
|
HKEY hKey, hTmp;
|
| 288 |
|
|
DWORD maxlen;
|
| 289 |
|
|
char *namebuf, *foundbuf;
|
| 290 |
|
|
DWORD i;
|
| 291 |
|
|
LONG res;
|
| 292 |
|
|
|
| 293 |
|
|
/* Open the uninstall "directory". */
|
| 294 |
|
|
hKey = openkey (HKEY_LOCAL_MACHINE, mingw_keys);
|
| 295 |
|
|
|
| 296 |
|
|
/* Not found. */
|
| 297 |
|
|
if (!hKey)
|
| 298 |
|
|
return executable;
|
| 299 |
|
|
|
| 300 |
|
|
/* Need to enumerate all of the keys here looking for one the most recent
|
| 301 |
|
|
one for MinGW. */
|
| 302 |
|
|
if (RegQueryInfoKey (hKey, NULL, NULL, NULL, NULL, &maxlen, NULL, NULL,
|
| 303 |
|
|
NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
|
| 304 |
|
|
{
|
| 305 |
|
|
RegCloseKey (hKey);
|
| 306 |
|
|
return executable;
|
| 307 |
|
|
}
|
| 308 |
|
|
namebuf = XNEWVEC (char, ++maxlen);
|
| 309 |
|
|
foundbuf = XNEWVEC (char, maxlen);
|
| 310 |
|
|
foundbuf[0] = '\0';
|
| 311 |
|
|
if (!namebuf || !foundbuf)
|
| 312 |
|
|
{
|
| 313 |
|
|
RegCloseKey (hKey);
|
| 314 |
|
|
if (namebuf)
|
| 315 |
|
|
free (namebuf);
|
| 316 |
|
|
if (foundbuf)
|
| 317 |
|
|
free (foundbuf);
|
| 318 |
|
|
return executable;
|
| 319 |
|
|
}
|
| 320 |
|
|
|
| 321 |
|
|
/* Look through all of the keys for one that begins with Minimal GNU...
|
| 322 |
|
|
Try to get the latest version by doing a string compare although that
|
| 323 |
|
|
string never really works with version number sorting. */
|
| 324 |
|
|
for (i = 0; RegEnumKey (hKey, i, namebuf, maxlen) == ERROR_SUCCESS; i++)
|
| 325 |
|
|
{
|
| 326 |
|
|
int match = strcasecmp (namebuf, MINGW_NAME);
|
| 327 |
|
|
if (match < 0)
|
| 328 |
|
|
continue;
|
| 329 |
|
|
if (match > 0 && strncasecmp (namebuf, MINGW_NAME, MINGW_NAME_LEN) > 0)
|
| 330 |
|
|
continue;
|
| 331 |
|
|
if (strcasecmp (namebuf, foundbuf) > 0)
|
| 332 |
|
|
strcpy (foundbuf, namebuf);
|
| 333 |
|
|
}
|
| 334 |
|
|
free (namebuf);
|
| 335 |
|
|
|
| 336 |
|
|
/* If foundbuf is empty, we didn't find anything. Punt. */
|
| 337 |
|
|
if (!foundbuf[0])
|
| 338 |
|
|
{
|
| 339 |
|
|
free (foundbuf);
|
| 340 |
|
|
RegCloseKey (hKey);
|
| 341 |
|
|
return executable;
|
| 342 |
|
|
}
|
| 343 |
|
|
|
| 344 |
|
|
/* Open the key that we wanted */
|
| 345 |
|
|
res = RegOpenKey (hKey, foundbuf, &hTmp);
|
| 346 |
|
|
RegCloseKey (hKey);
|
| 347 |
|
|
free (foundbuf);
|
| 348 |
|
|
|
| 349 |
|
|
/* Don't know why this would fail, but you gotta check */
|
| 350 |
|
|
if (res != ERROR_SUCCESS)
|
| 351 |
|
|
return executable;
|
| 352 |
|
|
|
| 353 |
|
|
maxlen = 0;
|
| 354 |
|
|
/* Get the length of the value pointed to by InstallLocation */
|
| 355 |
|
|
if (RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, NULL,
|
| 356 |
|
|
&maxlen) != ERROR_SUCCESS || maxlen == 0)
|
| 357 |
|
|
{
|
| 358 |
|
|
RegCloseKey (hTmp);
|
| 359 |
|
|
return executable;
|
| 360 |
|
|
}
|
| 361 |
|
|
|
| 362 |
|
|
/* Allocate space for the install location */
|
| 363 |
|
|
foundbuf = XNEWVEC (char, maxlen + strlen (executable));
|
| 364 |
|
|
if (!foundbuf)
|
| 365 |
|
|
{
|
| 366 |
|
|
free (foundbuf);
|
| 367 |
|
|
RegCloseKey (hTmp);
|
| 368 |
|
|
}
|
| 369 |
|
|
|
| 370 |
|
|
/* Read the install location into the buffer */
|
| 371 |
|
|
res = RegQueryValueEx (hTmp, "InstallLocation", 0, NULL, (LPBYTE) foundbuf,
|
| 372 |
|
|
&maxlen);
|
| 373 |
|
|
RegCloseKey (hTmp);
|
| 374 |
|
|
if (res != ERROR_SUCCESS)
|
| 375 |
|
|
{
|
| 376 |
|
|
free (foundbuf);
|
| 377 |
|
|
return executable;
|
| 378 |
|
|
}
|
| 379 |
|
|
|
| 380 |
|
|
/* Concatenate the install location and the executable, turn all slashes
|
| 381 |
|
|
to backslashes, and return that. */
|
| 382 |
|
|
return tack_on_executable (foundbuf, executable);
|
| 383 |
|
|
}
|
| 384 |
|
|
|
| 385 |
|
|
/* Read the install location of msys from it's installation file and
|
| 386 |
|
|
rootify the executable based on that. */
|
| 387 |
|
|
static const char *
|
| 388 |
|
|
msys_rootify (const char *executable)
|
| 389 |
|
|
{
|
| 390 |
|
|
size_t bufsize = 64;
|
| 391 |
|
|
size_t execlen = strlen (executable) + 1;
|
| 392 |
|
|
char *buf;
|
| 393 |
|
|
DWORD res = 0;
|
| 394 |
|
|
for (;;)
|
| 395 |
|
|
{
|
| 396 |
|
|
buf = XNEWVEC (char, bufsize + execlen);
|
| 397 |
|
|
if (!buf)
|
| 398 |
|
|
break;
|
| 399 |
|
|
res = GetPrivateProfileString ("InstallSettings", "InstallPath", NULL,
|
| 400 |
|
|
buf, bufsize, "msys.ini");
|
| 401 |
|
|
if (!res)
|
| 402 |
|
|
break;
|
| 403 |
|
|
if (strlen (buf) < bufsize)
|
| 404 |
|
|
break;
|
| 405 |
|
|
res = 0;
|
| 406 |
|
|
free (buf);
|
| 407 |
|
|
bufsize *= 2;
|
| 408 |
|
|
if (bufsize > 65536)
|
| 409 |
|
|
{
|
| 410 |
|
|
buf = NULL;
|
| 411 |
|
|
break;
|
| 412 |
|
|
}
|
| 413 |
|
|
}
|
| 414 |
|
|
|
| 415 |
|
|
if (res)
|
| 416 |
|
|
return tack_on_executable (buf, executable);
|
| 417 |
|
|
|
| 418 |
|
|
/* failed */
|
| 419 |
|
|
if (buf)
|
| 420 |
|
|
free (buf);
|
| 421 |
|
|
return executable;
|
| 422 |
|
|
}
|
| 423 |
|
|
#endif
|
| 424 |
|
|
|
| 425 |
|
|
static long
|
| 426 |
|
|
spawn_script (const char *executable, const char * const * argv)
|
| 427 |
|
|
{
|
| 428 |
|
|
int pid = -1;
|
| 429 |
|
|
int save_errno = errno;
|
| 430 |
|
|
int fd = _open (executable, _O_RDONLY);
|
| 431 |
|
|
|
| 432 |
|
|
if (fd >= 0)
|
| 433 |
|
|
{
|
| 434 |
|
|
char buf[MAX_PATH + 5];
|
| 435 |
|
|
int len = _read (fd, buf, sizeof (buf) - 1);
|
| 436 |
|
|
_close (fd);
|
| 437 |
|
|
if (len > 3)
|
| 438 |
|
|
{
|
| 439 |
|
|
char *eol;
|
| 440 |
|
|
buf[len] = '\0';
|
| 441 |
|
|
eol = strchr (buf, '\n');
|
| 442 |
|
|
if (eol && strncmp (buf, "#!", 2) == 0)
|
| 443 |
|
|
{
|
| 444 |
|
|
char *executable1;
|
| 445 |
|
|
const char ** avhere = (const char **) --argv;
|
| 446 |
|
|
do
|
| 447 |
|
|
*eol = '\0';
|
| 448 |
|
|
while (*--eol == '\r' || *eol == ' ' || *eol == '\t');
|
| 449 |
|
|
for (executable1 = buf + 2; *executable1 == ' ' || *executable1 == '\t'; executable1++)
|
| 450 |
|
|
continue;
|
| 451 |
|
|
|
| 452 |
|
|
backslashify (executable1);
|
| 453 |
|
|
*avhere = executable1;
|
| 454 |
|
|
#ifndef USE_MINGW_MSYS
|
| 455 |
|
|
executable = strrchr (executable1, '\\') + 1;
|
| 456 |
|
|
if (!executable)
|
| 457 |
|
|
executable = executable1;
|
| 458 |
|
|
pid = _spawnvp (_P_NOWAIT, executable, argv);
|
| 459 |
|
|
#else
|
| 460 |
|
|
if (strchr (executable1, '\\') == NULL)
|
| 461 |
|
|
pid = _spawnvp (_P_NOWAIT, executable1, argv);
|
| 462 |
|
|
else if (executable1[0] != '\\')
|
| 463 |
|
|
pid = _spawnv (_P_NOWAIT, executable1, argv);
|
| 464 |
|
|
else
|
| 465 |
|
|
{
|
| 466 |
|
|
const char *newex = mingw_rootify (executable1);
|
| 467 |
|
|
*avhere = newex;
|
| 468 |
|
|
pid = _spawnv (_P_NOWAIT, newex, argv);
|
| 469 |
|
|
if (executable1 != newex)
|
| 470 |
|
|
free ((char *) newex);
|
| 471 |
|
|
if (pid < 0)
|
| 472 |
|
|
{
|
| 473 |
|
|
newex = msys_rootify (executable1);
|
| 474 |
|
|
if (newex != executable1)
|
| 475 |
|
|
{
|
| 476 |
|
|
*avhere = newex;
|
| 477 |
|
|
pid = _spawnv (_P_NOWAIT, newex, argv);
|
| 478 |
|
|
free ((char *) newex);
|
| 479 |
|
|
}
|
| 480 |
|
|
}
|
| 481 |
|
|
}
|
| 482 |
|
|
#endif
|
| 483 |
|
|
}
|
| 484 |
|
|
}
|
| 485 |
|
|
}
|
| 486 |
|
|
if (pid < 0)
|
| 487 |
|
|
errno = save_errno;
|
| 488 |
|
|
return pid;
|
| 489 |
|
|
}
|
| 490 |
|
|
|
| 491 |
|
|
/* Execute a child. */
|
| 492 |
|
|
|
| 493 |
|
|
static long
|
| 494 |
|
|
pex_win32_exec_child (struct pex_obj *obj ATTRIBUTE_UNUSED, int flags,
|
| 495 |
|
|
const char *executable, char * const * argv,
|
| 496 |
|
|
int in, int out, int errdes, const char **errmsg,
|
| 497 |
|
|
int *err)
|
| 498 |
|
|
{
|
| 499 |
|
|
int org_in, org_out, org_errdes;
|
| 500 |
|
|
long pid;
|
| 501 |
|
|
const char * const * newargv;
|
| 502 |
|
|
|
| 503 |
|
|
org_in = -1;
|
| 504 |
|
|
org_out = -1;
|
| 505 |
|
|
org_errdes = -1;
|
| 506 |
|
|
|
| 507 |
|
|
if (in != STDIN_FILE_NO)
|
| 508 |
|
|
{
|
| 509 |
|
|
org_in = _dup (STDIN_FILE_NO);
|
| 510 |
|
|
if (org_in < 0)
|
| 511 |
|
|
{
|
| 512 |
|
|
*err = errno;
|
| 513 |
|
|
*errmsg = "_dup";
|
| 514 |
|
|
return -1;
|
| 515 |
|
|
}
|
| 516 |
|
|
if (_dup2 (in, STDIN_FILE_NO) < 0)
|
| 517 |
|
|
{
|
| 518 |
|
|
*err = errno;
|
| 519 |
|
|
*errmsg = "_dup2";
|
| 520 |
|
|
return -1;
|
| 521 |
|
|
}
|
| 522 |
|
|
if (_close (in) < 0)
|
| 523 |
|
|
{
|
| 524 |
|
|
*err = errno;
|
| 525 |
|
|
*errmsg = "_close";
|
| 526 |
|
|
return -1;
|
| 527 |
|
|
}
|
| 528 |
|
|
}
|
| 529 |
|
|
|
| 530 |
|
|
if (out != STDOUT_FILE_NO)
|
| 531 |
|
|
{
|
| 532 |
|
|
org_out = _dup (STDOUT_FILE_NO);
|
| 533 |
|
|
if (org_out < 0)
|
| 534 |
|
|
{
|
| 535 |
|
|
*err = errno;
|
| 536 |
|
|
*errmsg = "_dup";
|
| 537 |
|
|
return -1;
|
| 538 |
|
|
}
|
| 539 |
|
|
if (_dup2 (out, STDOUT_FILE_NO) < 0)
|
| 540 |
|
|
{
|
| 541 |
|
|
*err = errno;
|
| 542 |
|
|
*errmsg = "_dup2";
|
| 543 |
|
|
return -1;
|
| 544 |
|
|
}
|
| 545 |
|
|
if (_close (out) < 0)
|
| 546 |
|
|
{
|
| 547 |
|
|
*err = errno;
|
| 548 |
|
|
*errmsg = "_close";
|
| 549 |
|
|
return -1;
|
| 550 |
|
|
}
|
| 551 |
|
|
}
|
| 552 |
|
|
|
| 553 |
|
|
if (errdes != STDERR_FILE_NO
|
| 554 |
|
|
|| (flags & PEX_STDERR_TO_STDOUT) != 0)
|
| 555 |
|
|
{
|
| 556 |
|
|
org_errdes = _dup (STDERR_FILE_NO);
|
| 557 |
|
|
if (org_errdes < 0)
|
| 558 |
|
|
{
|
| 559 |
|
|
*err = errno;
|
| 560 |
|
|
*errmsg = "_dup";
|
| 561 |
|
|
return -1;
|
| 562 |
|
|
}
|
| 563 |
|
|
if (_dup2 ((flags & PEX_STDERR_TO_STDOUT) != 0 ? STDOUT_FILE_NO : errdes,
|
| 564 |
|
|
STDERR_FILE_NO) < 0)
|
| 565 |
|
|
{
|
| 566 |
|
|
*err = errno;
|
| 567 |
|
|
*errmsg = "_dup2";
|
| 568 |
|
|
return -1;
|
| 569 |
|
|
}
|
| 570 |
|
|
if (errdes != STDERR_FILE_NO)
|
| 571 |
|
|
{
|
| 572 |
|
|
if (_close (errdes) < 0)
|
| 573 |
|
|
{
|
| 574 |
|
|
*err = errno;
|
| 575 |
|
|
*errmsg = "_close";
|
| 576 |
|
|
return -1;
|
| 577 |
|
|
}
|
| 578 |
|
|
}
|
| 579 |
|
|
}
|
| 580 |
|
|
|
| 581 |
|
|
newargv = fix_argv (argv);
|
| 582 |
|
|
pid = (((flags & PEX_SEARCH) != 0 ? _spawnvp : _spawnv)
|
| 583 |
|
|
(_P_NOWAIT, executable, newargv));
|
| 584 |
|
|
|
| 585 |
|
|
if (pid == -1)
|
| 586 |
|
|
pid = spawn_script (executable, newargv);
|
| 587 |
|
|
|
| 588 |
|
|
if (pid == -1)
|
| 589 |
|
|
{
|
| 590 |
|
|
*err = errno;
|
| 591 |
|
|
*errmsg = ((flags & PEX_SEARCH) != 0) ? "_spawnvp" : "_spawnv";
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
if (in != STDIN_FILE_NO)
|
| 595 |
|
|
{
|
| 596 |
|
|
if (_dup2 (org_in, STDIN_FILE_NO) < 0)
|
| 597 |
|
|
{
|
| 598 |
|
|
*err = errno;
|
| 599 |
|
|
*errmsg = "_dup2";
|
| 600 |
|
|
return -1;
|
| 601 |
|
|
}
|
| 602 |
|
|
if (_close (org_in) < 0)
|
| 603 |
|
|
{
|
| 604 |
|
|
*err = errno;
|
| 605 |
|
|
*errmsg = "_close";
|
| 606 |
|
|
return -1;
|
| 607 |
|
|
}
|
| 608 |
|
|
}
|
| 609 |
|
|
|
| 610 |
|
|
if (out != STDOUT_FILE_NO)
|
| 611 |
|
|
{
|
| 612 |
|
|
if (_dup2 (org_out, STDOUT_FILE_NO) < 0)
|
| 613 |
|
|
{
|
| 614 |
|
|
*err = errno;
|
| 615 |
|
|
*errmsg = "_dup2";
|
| 616 |
|
|
return -1;
|
| 617 |
|
|
}
|
| 618 |
|
|
if (_close (org_out) < 0)
|
| 619 |
|
|
{
|
| 620 |
|
|
*err = errno;
|
| 621 |
|
|
*errmsg = "_close";
|
| 622 |
|
|
return -1;
|
| 623 |
|
|
}
|
| 624 |
|
|
}
|
| 625 |
|
|
|
| 626 |
|
|
if (errdes != STDERR_FILE_NO
|
| 627 |
|
|
|| (flags & PEX_STDERR_TO_STDOUT) != 0)
|
| 628 |
|
|
{
|
| 629 |
|
|
if (_dup2 (org_errdes, STDERR_FILE_NO) < 0)
|
| 630 |
|
|
{
|
| 631 |
|
|
*err = errno;
|
| 632 |
|
|
*errmsg = "_dup2";
|
| 633 |
|
|
return -1;
|
| 634 |
|
|
}
|
| 635 |
|
|
if (_close (org_errdes) < 0)
|
| 636 |
|
|
{
|
| 637 |
|
|
*err = errno;
|
| 638 |
|
|
*errmsg = "_close";
|
| 639 |
|
|
return -1;
|
| 640 |
|
|
}
|
| 641 |
|
|
}
|
| 642 |
|
|
|
| 643 |
|
|
return pid;
|
| 644 |
|
|
}
|
| 645 |
|
|
|
| 646 |
|
|
/* Wait for a child process to complete. MS CRTDLL doesn't return
|
| 647 |
|
|
enough information in status to decide if the child exited due to a
|
| 648 |
|
|
signal or not, rather it simply returns an integer with the exit
|
| 649 |
|
|
code of the child; eg., if the child exited with an abort() call
|
| 650 |
|
|
and didn't have a handler for SIGABRT, it simply returns with
|
| 651 |
|
|
status == 3. We fix the status code to conform to the usual WIF*
|
| 652 |
|
|
macros. Note that WIFSIGNALED will never be true under CRTDLL. */
|
| 653 |
|
|
|
| 654 |
|
|
static int
|
| 655 |
|
|
pex_win32_wait (struct pex_obj *obj ATTRIBUTE_UNUSED, long pid,
|
| 656 |
|
|
int *status, struct pex_time *time, int done ATTRIBUTE_UNUSED,
|
| 657 |
|
|
const char **errmsg, int *err)
|
| 658 |
|
|
{
|
| 659 |
|
|
int termstat;
|
| 660 |
|
|
|
| 661 |
|
|
if (time != NULL)
|
| 662 |
|
|
memset (time, 0, sizeof *time);
|
| 663 |
|
|
|
| 664 |
|
|
/* FIXME: If done is non-zero, we should probably try to kill the
|
| 665 |
|
|
process. */
|
| 666 |
|
|
|
| 667 |
|
|
if (_cwait (&termstat, pid, WAIT_CHILD) < 0)
|
| 668 |
|
|
{
|
| 669 |
|
|
*err = errno;
|
| 670 |
|
|
*errmsg = "_cwait";
|
| 671 |
|
|
return -1;
|
| 672 |
|
|
}
|
| 673 |
|
|
|
| 674 |
|
|
/* cwait returns the child process exit code in termstat. A value
|
| 675 |
|
|
of 3 indicates that the child caught a signal, but not which one.
|
| 676 |
|
|
Since only SIGABRT, SIGFPE and SIGINT do anything, we report
|
| 677 |
|
|
SIGABRT. */
|
| 678 |
|
|
|
| 679 |
|
|
if (termstat == 3)
|
| 680 |
|
|
*status = SIGABRT;
|
| 681 |
|
|
else
|
| 682 |
|
|
*status = ((termstat & 0xff) << 8);
|
| 683 |
|
|
|
| 684 |
|
|
return 0;
|
| 685 |
|
|
}
|
| 686 |
|
|
|
| 687 |
|
|
/* Create a pipe. */
|
| 688 |
|
|
|
| 689 |
|
|
static int
|
| 690 |
|
|
pex_win32_pipe (struct pex_obj *obj ATTRIBUTE_UNUSED, int *p,
|
| 691 |
|
|
int binary)
|
| 692 |
|
|
{
|
| 693 |
|
|
return _pipe (p, 256, binary ? _O_BINARY : _O_TEXT);
|
| 694 |
|
|
}
|
| 695 |
|
|
|
| 696 |
|
|
/* Get a FILE pointer to read from a file descriptor. */
|
| 697 |
|
|
|
| 698 |
|
|
static FILE *
|
| 699 |
|
|
pex_win32_fdopenr (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd,
|
| 700 |
|
|
int binary)
|
| 701 |
|
|
{
|
| 702 |
|
|
return fdopen (fd, binary ? "rb" : "r");
|
| 703 |
|
|
}
|
| 704 |
|
|
|
| 705 |
|
|
#ifdef MAIN
|
| 706 |
|
|
#include <stdio.h>
|
| 707 |
|
|
|
| 708 |
|
|
int
|
| 709 |
|
|
main (int argc ATTRIBUTE_UNUSED, char **argv)
|
| 710 |
|
|
{
|
| 711 |
|
|
char const *errmsg;
|
| 712 |
|
|
int err;
|
| 713 |
|
|
argv++;
|
| 714 |
|
|
printf ("%ld\n", pex_win32_exec_child (NULL, PEX_SEARCH, argv[0], argv, 0, 1, 2, &errmsg, &err));
|
| 715 |
|
|
exit (0);
|
| 716 |
|
|
}
|
| 717 |
|
|
#endif
|
