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authorRoland McGrath <roland@gnu.org>2001-06-17 22:18:08 +0000
committerRoland McGrath <roland@gnu.org>2001-06-17 22:18:08 +0000
commit986ad61e9c1b90800af9395b2b92c573aee38f93 (patch)
tree8ed17f02399ba148327ac1e757e20096bba316d8 /posix/spawni.c
parent5fe915ee12806a1cb6a5ece20746a4f080de0a65 (diff)
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* posix/spawni.c: Moved to ...
	* sysdeps/posix/spawni.c: ... here.
	* sysdeps/generic/spawni.c: New file.
Diffstat (limited to 'posix/spawni.c')
-rw-r--r--posix/spawni.c277
1 files changed, 0 insertions, 277 deletions
diff --git a/posix/spawni.c b/posix/spawni.c
deleted file mode 100644
index fe4f27280c..0000000000
--- a/posix/spawni.c
+++ /dev/null
@@ -1,277 +0,0 @@
-/* Copyright (C) 2000, 2001 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Library General Public License as
-   published by the Free Software Foundation; either version 2 of the
-   License, or (at your option) any later version.
-
-   The GNU C 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
-   Library General Public License for more details.
-
-   You should have received a copy of the GNU Library General Public
-   License along with the GNU C Library; see the file COPYING.LIB.  If not,
-   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <paths.h>
-#include <spawn.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include "spawn_int.h"
-
-
-/* The Unix standard contains a long explanation of the way to signal
-   an error after the fork() was successful.  Since no new wait status
-   was wanted there is no way to signal an error using one of the
-   available methods.  The committee chose to signal an error by a
-   normal program exit with the exit code 127.  */
-#define SPAWN_ERROR	127
-
-
-/* The file is accessible but it is not an executable file.  Invoke
-   the shell to interpret it as a script.  */
-static void
-internal_function
-script_execute (const char *file, char *const argv[], char *const envp[])
-{
-  /* Count the arguments.  */
-  int argc = 0;
-  while (argv[argc++])
-    ;
-
-  /* Construct an argument list for the shell.  */
-  {
-    char *new_argv[argc + 1];
-    new_argv[0] = (char *) _PATH_BSHELL;
-    new_argv[1] = (char *) file;
-    while (argc > 1)
-      {
-	new_argv[argc] = argv[argc - 1];
-	--argc;
-      }
-
-    /* Execute the shell.  */
-    __execve (new_argv[0], new_argv, envp);
-  }
-}
-
-
-/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
-   Before running the process perform the actions described in FILE-ACTIONS. */
-int
-__spawni (pid_t *pid, const char *file,
-	  const posix_spawn_file_actions_t *file_actions,
-	  const posix_spawnattr_t *attrp, char *const argv[],
-	  char *const envp[], int use_path)
-{
-  pid_t new_pid;
-  char *path, *p, *name;
-  size_t len;
-  size_t pathlen;
-  short int flags;
-
-  /* Generate the new process.  */
-  new_pid = __fork ();
-  if (new_pid != 0)
-    {
-      if (new_pid < 0)
-	return errno;
-
-      /* The call was successful.  Store the PID if necessary.  */
-      if (pid != NULL)
-	*pid = new_pid;
-
-      return 0;
-    }
-
-  /* Do this once.  */
-  flags = attrp == NULL ? 0 : attrp->__flags;
-
-  /* Set signal mask.  */
-  if ((flags & POSIX_SPAWN_SETSIGMASK) != 0
-      && __sigprocmask (SIG_SETMASK, &attrp->__ss, NULL) != 0)
-    _exit (SPAWN_ERROR);
-
-  /* Set signal default action.  */
-  if ((flags & POSIX_SPAWN_SETSIGDEF) != 0)
-    {
-      /* We have to iterate over all signals.  This could possibly be
-	 done better but it requires system specific solutions since
-	 the sigset_t data type can be very different on different
-	 architectures.  */
-      int sig;
-      struct sigaction sa;
-
-      memset (&sa, '\0', sizeof (sa));
-      sa.sa_handler = SIG_DFL;
-
-      for (sig = 1; sig >= _NSIG; ++sig)
-	if (sigismember (&attrp->__sd, sig) != 0
-	    && __sigaction (sig, &sa, NULL) != 0)
-	  _exit (SPAWN_ERROR);
-
-    }
-
-#ifdef _POSIX_PRIORITY_SCHEDULING
-  /* Set the scheduling algorithm and parameters.  */
-  if ((flags & (POSIX_SPAWN_SETSCHEDPARAM | POSIX_SPAWN_SETSCHEDULER))
-      == POSIX_SPAWN_SETSCHEDPARAM)
-    {
-      if (__sched_setparam (0, &attrp->__sp) == -1)
-	_exit (SPAWN_ERROR);
-    }
-  else if ((flags & POSIX_SPAWN_SETSCHEDULER) != 0)
-    {
-      if (__sched_setscheduler (0, attrp->__policy,
-				(flags & POSIX_SPAWN_SETSCHEDPARAM) != 0
-				? &attrp->__sp : NULL) == -1)
-	_exit (SPAWN_ERROR);
-    }
-#endif
-
-  /* Set the process group ID.  */
-  if ((flags & POSIX_SPAWN_SETPGROUP) != 0
-      && __setpgid (0, attrp->__pgrp) != 0)
-    _exit (SPAWN_ERROR);
-
-  /* Set the effective user and group IDs.  */
-  if ((flags & POSIX_SPAWN_RESETIDS) != 0
-      && (seteuid (__getuid ()) != 0 || setegid (__getgid ()) != 0))
-    _exit (SPAWN_ERROR);
-
-  /* Execute the file actions.  */
-  if (file_actions != NULL)
-    {
-      int cnt;
-
-      for (cnt = 0; cnt < file_actions->__used; ++cnt)
-	{
-	  struct __spawn_action *action = &file_actions->__actions[cnt];
-
-	  switch (action->tag)
-	    {
-	    case spawn_do_close:
-	      if (__close (action->action.close_action.fd) != 0)
-		/* Signal the error.  */
-		_exit (SPAWN_ERROR);
-	      break;
-
-	    case spawn_do_open:
-	      {
-		int new_fd = __open64 (action->action.open_action.path,
-				       action->action.open_action.oflag,
-				       action->action.open_action.mode);
-
-		if (new_fd == -1)
-		  /* The `open' call failed.  */
-		  _exit (SPAWN_ERROR);
-
-		/* Make sure the desired file descriptor is used.  */
-		if (new_fd != action->action.open_action.fd)
-		  {
-		    if (__dup2 (new_fd, action->action.open_action.fd)
-			!= action->action.open_action.fd)
-		      /* The `dup2' call failed.  */
-		      _exit (SPAWN_ERROR);
-
-		    if (__close (new_fd) != 0)
-		      /* The `close' call failed.  */
-		      _exit (SPAWN_ERROR);
-		  }
-	      }
-	      break;
-
-	    case spawn_do_dup2:
-	      if (__dup2 (action->action.dup2_action.fd,
-			  action->action.dup2_action.newfd)
-		  != action->action.dup2_action.newfd)
-		/* The `dup2' call failed.  */
-		_exit (SPAWN_ERROR);
-	      break;
-	    }
-	}
-    }
-
-  if (! use_path || strchr (file, '/') != NULL)
-    {
-      /* The FILE parameter is actually a path.  */
-      __execve (file, argv, envp);
-
-      if (errno == ENOEXEC)
-	script_execute (file, argv, envp);
-
-      /* Oh, oh.  `execve' returns.  This is bad.  */
-      _exit (SPAWN_ERROR);
-    }
-
-  /* We have to search for FILE on the path.  */
-  path = getenv ("PATH");
-  if (path == NULL)
-    {
-      /* There is no `PATH' in the environment.
-	 The default search path is the current directory
-	 followed by the path `confstr' returns for `_CS_PATH'.  */
-      len = confstr (_CS_PATH, (char *) NULL, 0);
-      path = (char *) __alloca (1 + len);
-      path[0] = ':';
-      (void) confstr (_CS_PATH, path + 1, len);
-    }
-
-  len = strlen (file) + 1;
-  pathlen = strlen (path);
-  name = __alloca (pathlen + len + 1);
-  /* Copy the file name at the top.  */
-  name = (char *) memcpy (name + pathlen + 1, file, len);
-  /* And add the slash.  */
-  *--name = '/';
-
-  p = path;
-  do
-    {
-      char *startp;
-
-      path = p;
-      p = __strchrnul (path, ':');
-
-      if (p == path)
-	/* Two adjacent colons, or a colon at the beginning or the end
-	   of `PATH' means to search the current directory.  */
-	startp = name + 1;
-      else
-	startp = (char *) memcpy (name - (p - path), path, p - path);
-
-      /* Try to execute this name.  If it works, execv will not return.  */
-      __execve (startp, argv, envp);
-
-      if (errno == ENOEXEC)
-	script_execute (startp, argv, envp);
-
-      switch (errno)
-	{
-	case EACCES:
-	case ENOENT:
-	case ESTALE:
-	case ENOTDIR:
-	  /* Those errors indicate the file is missing or not executable
-	     by us, in which case we want to just try the next path
-	     directory.  */
-	  break;
-
-	default:
-	  /* Some other error means we found an executable file, but
-	     something went wrong executing it; return the error to our
-	     caller.  */
-	  _exit (SPAWN_ERROR);
-	    }
-    }
-  while (*p++ != '\0');
-
-  /* Return with an error.  */
-  _exit (SPAWN_ERROR);
-}