/* Utilities to execute a program in a subprocess (possibly linked by pipes
with other subprocesses), and wait for it. Generic Unix version
(also used for UWIN and VMS).
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005
+ Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2009
Free Software Foundation, Inc.
This file is part of the libiberty library.
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB. If not,
-write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA. */
#include "config.h"
#include "libiberty.h"
#ifdef HAVE_VFORK_H
#include <vfork.h>
#endif
-#ifdef VMS
-#define vfork() (decc$$alloc_vfork_blocks() >= 0 ? \
- lib$get_current_invo_context(decc$$get_vfork_jmpbuf()) : -1)
-#endif /* VMS */
+#if defined(VMS) && defined (__LONG_POINTERS)
+#ifndef __CHAR_PTR32
+typedef char * __char_ptr32
+__attribute__ ((mode (SI)));
+#endif
+
+typedef __char_ptr32 *__char_ptr_char_ptr32
+__attribute__ ((mode (SI)));
+
+/* Return a 32 bit pointer to an array of 32 bit pointers
+ given a 64 bit pointer to an array of 64 bit pointers. */
+
+static __char_ptr_char_ptr32
+to_ptr32 (char **ptr64)
+{
+ int argc;
+ __char_ptr_char_ptr32 short_argv;
+
+ for (argc=0; ptr64[argc]; argc++);
+
+ /* Reallocate argv with 32 bit pointers. */
+ short_argv = (__char_ptr_char_ptr32) decc$malloc
+ (sizeof (__char_ptr32) * (argc + 1));
+ for (argc=0; ptr64[argc]; argc++)
+ short_argv[argc] = (__char_ptr32) decc$strdup (ptr64[argc]);
+
+ short_argv[argc] = (__char_ptr32) 0;
+ return short_argv;
+
+}
+#else
+#define to_ptr32(argv) argv
+#endif
/* File mode to use for private and world-readable files. */
return cpid;
}
- psl = xmalloc (sizeof (struct status_list));
+ psl = XNEW (struct status_list);
psl->pid = cpid;
psl->status = *status;
if (time != NULL)
ATTRIBUTE_NORETURN;
static int pex_unix_open_read (struct pex_obj *, const char *, int);
static int pex_unix_open_write (struct pex_obj *, const char *, int);
-static long pex_unix_exec_child (struct pex_obj *, int, const char *,
- char * const *, int, int, int,
+static pid_t pex_unix_exec_child (struct pex_obj *, int, const char *,
+ char * const *, char * const *,
+ int, int, int, int,
const char **, int *);
static int pex_unix_close (struct pex_obj *, int);
-static int pex_unix_wait (struct pex_obj *, long, int *, struct pex_time *,
+static int pex_unix_wait (struct pex_obj *, pid_t, int *, struct pex_time *,
int, const char **, int *);
static int pex_unix_pipe (struct pex_obj *, int *, int);
static FILE *pex_unix_fdopenr (struct pex_obj *, int, int);
+static FILE *pex_unix_fdopenw (struct pex_obj *, int, int);
static void pex_unix_cleanup (struct pex_obj *);
/* The list of functions we pass to the common routines. */
pex_unix_wait,
pex_unix_pipe,
pex_unix_fdopenr,
+ pex_unix_fdopenw,
pex_unix_cleanup
};
pex_child_error (struct pex_obj *obj, const char *executable,
const char *errmsg, int err)
{
-#define writeerr(s) write (STDERR_FILE_NO, s, strlen (s))
+#define writeerr(s) (void) write (STDERR_FILE_NO, s, strlen (s))
writeerr (obj->pname);
writeerr (": error trying to exec '");
writeerr (executable);
/* Execute a child. */
-static long
+extern char **environ;
+
+static pid_t
pex_unix_exec_child (struct pex_obj *obj, int flags, const char *executable,
- char * const * argv, int in, int out, int errdes,
- const char **errmsg, int *err)
+ char * const * argv, char * const * env,
+ int in, int out, int errdes,
+ int toclose, const char **errmsg, int *err)
{
pid_t pid;
+
/* We declare these to be volatile to avoid warnings from gcc about
them being clobbered by vfork. */
volatile int sleep_interval;
case -1:
*err = errno;
*errmsg = VFORK_STRING;
- return -1;
+ return (pid_t) -1;
case 0:
/* Child process. */
if (close (errdes) < 0)
pex_child_error (obj, executable, "close", errno);
}
+ if (toclose >= 0)
+ {
+ if (close (toclose) < 0)
+ pex_child_error (obj, executable, "close", errno);
+ }
if ((flags & PEX_STDERR_TO_STDOUT) != 0)
{
if (dup2 (STDOUT_FILE_NO, STDERR_FILE_NO) < 0)
pex_child_error (obj, executable, "dup2", errno);
}
+
+ if (env)
+ environ = (char**) env;
+
if ((flags & PEX_SEARCH) != 0)
{
- execvp (executable, argv);
+ execvp (executable, to_ptr32 (argv));
pex_child_error (obj, executable, "execvp", errno);
}
else
{
- execv (executable, argv);
+ execv (executable, to_ptr32 (argv));
pex_child_error (obj, executable, "execv", errno);
}
/* NOTREACHED */
- return -1;
+ return (pid_t) -1;
default:
/* Parent process. */
{
*err = errno;
*errmsg = "close";
- return -1;
+ return (pid_t) -1;
}
}
if (out != STDOUT_FILE_NO)
{
*err = errno;
*errmsg = "close";
- return -1;
+ return (pid_t) -1;
}
}
if (errdes != STDERR_FILE_NO)
{
*err = errno;
*errmsg = "close";
- return -1;
+ return (pid_t) -1;
}
}
- return (long) pid;
+ return pid;
}
}
/* Wait for a child process to complete. */
static int
-pex_unix_wait (struct pex_obj *obj, long pid, int *status,
+pex_unix_wait (struct pex_obj *obj, pid_t pid, int *status,
struct pex_time *time, int done, const char **errmsg,
int *err)
{
return fdopen (fd, "r");
}
+static FILE *
+pex_unix_fdopenw (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd,
+ int binary ATTRIBUTE_UNUSED)
+{
+ if (fcntl (fd, F_SETFD, FD_CLOEXEC) < 0)
+ return NULL;
+ return fdopen (fd, "w");
+}
+
static void
pex_unix_cleanup (struct pex_obj *obj ATTRIBUTE_UNUSED)
{