-/* Copyright (C) 1995,1996,1997,1998,2000,2001, 2003, 2004, 2009 Free Software
- * Foundation, Inc.
- *
+/* Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2003, 2004, 2009,
+ * 2010, 2012, 2013, 2014 Free Software Foundation, Inc.
+ *
* This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
*/
#include <errno.h>
#include <signal.h> /* for SIG constants */
#include <stdlib.h> /* for getenv */
+#include <stdio.h>
#include "libguile/_scm.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
-#ifdef HAVE_UNISTD_H
#include <unistd.h>
-#endif
#if HAVE_SYS_WAIT_H
# include <sys/wait.h>
#endif
+#ifdef __MINGW32__
+# include <process.h> /* for spawnvp and friends */
+#endif
+
#include "posix.h"
\f
#ifdef HAVE_SYSTEM
-#ifdef HAVE_WAITPID
-
SCM_DEFINE (scm_system_star, "system*", 0, 0, 1,
(SCM args),
if (scm_is_pair (args))
{
SCM oldint;
- SCM oldquit;
SCM sig_ign;
SCM sigint;
+ /* SIGQUIT is undefined on MS-Windows. */
+#ifdef SIGQUIT
+ SCM oldquit;
SCM sigquit;
+#endif
+#ifdef HAVE_FORK
int pid;
+#else
+ int status;
+#endif
char **execargv;
/* allocate before fork */
execargv = scm_i_allocate_string_pointers (args);
/* make sure the child can't kill us (as per normal system call) */
- sig_ign = scm_from_long ((unsigned long) SIG_IGN);
+ sig_ign = scm_from_ulong ((unsigned long) SIG_IGN);
sigint = scm_from_int (SIGINT);
- sigquit = scm_from_int (SIGQUIT);
oldint = scm_sigaction (sigint, sig_ign, SCM_UNDEFINED);
+#ifdef SIGQUIT
+ sigquit = scm_from_int (SIGQUIT);
oldquit = scm_sigaction (sigquit, sig_ign, SCM_UNDEFINED);
-
+#endif
+
+#ifdef HAVE_FORK
pid = fork ();
if (pid == 0)
{
/* child */
- execvp (execargv[0], execargv);
- SCM_SYSERROR;
- /* not reached. */
- return SCM_BOOL_F;
+ execvp (execargv[0], execargv);
+
+ /* Something went wrong. */
+ fprintf (stderr, "In execvp of %s: %s\n",
+ execargv[0], strerror (errno));
+
+ /* Exit directly instead of throwing, because otherwise this
+ process may keep on running. Use exit status 127, like
+ shells in this case, as per POSIX
+ <http://pubs.opengroup.org/onlinepubs/007904875/utilities/xcu_chap02.html#tag_02_09_01_01>. */
+ _exit (127);
}
else
{
return scm_from_int (status);
}
+#else /* !HAVE_FORK */
+ status = spawnvp (P_WAIT, execargv[0], (const char * const *)execargv);
+ scm_sigaction (sigint, SCM_CAR (oldint), SCM_CDR (oldint));
+#ifdef SIGQUIT
+ scm_sigaction (sigquit, SCM_CAR (oldquit), SCM_CDR (oldquit));
+#endif
+
+ return scm_from_int (status);
+#endif /* !HAVE_FORK */
}
else
SCM_WRONG_TYPE_ARG (1, args);
}
#undef FUNC_NAME
-#endif /* HAVE_WAITPID */
#endif /* HAVE_SYSTEM */
SCM_DEFINE (scm_getenv, "getenv", 1, 0, 0,
(SCM nam),
- "Looks up the string @var{name} in the current environment. The return\n"
+ "Looks up the string @var{nam} in the current environment. The return\n"
"value is @code{#f} unless a string of the form @code{NAME=VALUE} is\n"
"found, in which case the string @code{VALUE} is returned.")
#define FUNC_NAME s_scm_getenv
}
#undef FUNC_NAME
+/* Get an integer from an environment variable. */
+int
+scm_getenv_int (const char *var, int def)
+{
+ char *end = 0;
+ char *val = getenv (var);
+ long res = def;
+ if (!val)
+ return def;
+ res = strtol (val, &end, 10);
+ if (end == val)
+ return def;
+ return res;
+}
+
/* simple exit, without unwinding the scheme stack or flushing ports. */
SCM_DEFINE (scm_primitive_exit, "primitive-exit", 0, 1, 0,
(SCM status),