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[/] [openrisc/] [trunk/] [gnu-old/] [binutils-2.18.50/] [libiberty/] [pex-djgpp.c] - Diff between revs 156 and 816

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/* Utilities to execute a program in a subprocess (possibly linked by pipes
/* Utilities to execute a program in a subprocess (possibly linked by pipes
   with other subprocesses), and wait for it.  DJGPP specialization.
   with other subprocesses), and wait for it.  DJGPP specialization.
   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005
   Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005
   Free Software Foundation, Inc.
   Free Software Foundation, Inc.
 
 
This file is part of the libiberty library.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
Libiberty is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
version 2 of the License, or (at your option) any later version.
 
 
Libiberty is distributed in the hope that it will be useful,
Libiberty is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.
Library General Public License for more details.
 
 
You should have received a copy of the GNU Library General Public
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB.  If not,
License along with libiberty; see the file COPYING.LIB.  If not,
write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA.  */
Boston, MA 02110-1301, USA.  */
 
 
#include "pex-common.h"
#include "pex-common.h"
 
 
#include <stdio.h>
#include <stdio.h>
#include <errno.h>
#include <errno.h>
#ifdef NEED_DECLARATION_ERRNO
#ifdef NEED_DECLARATION_ERRNO
extern int errno;
extern int errno;
#endif
#endif
#ifdef HAVE_STDLIB_H
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#include <stdlib.h>
#endif
#endif
#include <string.h>
#include <string.h>
#include <fcntl.h>
#include <fcntl.h>
#include <unistd.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/stat.h>
#include <process.h>
#include <process.h>
 
 
/* Use ECHILD if available, otherwise use EINVAL.  */
/* Use ECHILD if available, otherwise use EINVAL.  */
#ifdef ECHILD
#ifdef ECHILD
#define PWAIT_ERROR ECHILD
#define PWAIT_ERROR ECHILD
#else
#else
#define PWAIT_ERROR EINVAL
#define PWAIT_ERROR EINVAL
#endif
#endif
 
 
static int pex_djgpp_open_read (struct pex_obj *, const char *, int);
static int pex_djgpp_open_read (struct pex_obj *, const char *, int);
static int pex_djgpp_open_write (struct pex_obj *, const char *, int);
static int pex_djgpp_open_write (struct pex_obj *, const char *, int);
static pid_t pex_djgpp_exec_child (struct pex_obj *, int, const char *,
static pid_t pex_djgpp_exec_child (struct pex_obj *, int, const char *,
                                  char * const *, char * const *,
                                  char * const *, char * const *,
                                  int, int, int, int,
                                  int, int, int, int,
                                  const char **, int *);
                                  const char **, int *);
static int pex_djgpp_close (struct pex_obj *, int);
static int pex_djgpp_close (struct pex_obj *, int);
static int pex_djgpp_wait (struct pex_obj *, pid_t, int *, struct pex_time *,
static int pex_djgpp_wait (struct pex_obj *, pid_t, int *, struct pex_time *,
                           int, const char **, int *);
                           int, const char **, int *);
 
 
/* The list of functions we pass to the common routines.  */
/* The list of functions we pass to the common routines.  */
 
 
const struct pex_funcs funcs =
const struct pex_funcs funcs =
{
{
  pex_djgpp_open_read,
  pex_djgpp_open_read,
  pex_djgpp_open_write,
  pex_djgpp_open_write,
  pex_djgpp_exec_child,
  pex_djgpp_exec_child,
  pex_djgpp_close,
  pex_djgpp_close,
  pex_djgpp_wait,
  pex_djgpp_wait,
  NULL, /* pipe */
  NULL, /* pipe */
  NULL, /* fdopenr */
  NULL, /* fdopenr */
  NULL, /* fdopenw */
  NULL, /* fdopenw */
  NULL  /* cleanup */
  NULL  /* cleanup */
};
};
 
 
/* Return a newly initialized pex_obj structure.  */
/* Return a newly initialized pex_obj structure.  */
 
 
struct pex_obj *
struct pex_obj *
pex_init (int flags, const char *pname, const char *tempbase)
pex_init (int flags, const char *pname, const char *tempbase)
{
{
  /* DJGPP does not support pipes.  */
  /* DJGPP does not support pipes.  */
  flags &= ~ PEX_USE_PIPES;
  flags &= ~ PEX_USE_PIPES;
  return pex_init_common (flags, pname, tempbase, &funcs);
  return pex_init_common (flags, pname, tempbase, &funcs);
}
}
 
 
/* Open a file for reading.  */
/* Open a file for reading.  */
 
 
static int
static int
pex_djgpp_open_read (struct pex_obj *obj ATTRIBUTE_UNUSED,
pex_djgpp_open_read (struct pex_obj *obj ATTRIBUTE_UNUSED,
                     const char *name, int binary)
                     const char *name, int binary)
{
{
  return open (name, O_RDONLY | (binary ? O_BINARY : O_TEXT));
  return open (name, O_RDONLY | (binary ? O_BINARY : O_TEXT));
}
}
 
 
/* Open a file for writing.  */
/* Open a file for writing.  */
 
 
static int
static int
pex_djgpp_open_write (struct pex_obj *obj ATTRIBUTE_UNUSED,
pex_djgpp_open_write (struct pex_obj *obj ATTRIBUTE_UNUSED,
                      const char *name, int binary)
                      const char *name, int binary)
{
{
  /* Note that we can't use O_EXCL here because gcc may have already
  /* Note that we can't use O_EXCL here because gcc may have already
     created the temporary file via make_temp_file.  */
     created the temporary file via make_temp_file.  */
  return open (name,
  return open (name,
               (O_WRONLY | O_CREAT | O_TRUNC
               (O_WRONLY | O_CREAT | O_TRUNC
                | (binary ? O_BINARY : O_TEXT)),
                | (binary ? O_BINARY : O_TEXT)),
               S_IRUSR | S_IWUSR);
               S_IRUSR | S_IWUSR);
}
}
 
 
/* Close a file.  */
/* Close a file.  */
 
 
static int
static int
pex_djgpp_close (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd)
pex_djgpp_close (struct pex_obj *obj ATTRIBUTE_UNUSED, int fd)
{
{
  return close (fd);
  return close (fd);
}
}
 
 
/* Execute a child.  */
/* Execute a child.  */
 
 
static pid_t
static pid_t
pex_djgpp_exec_child (struct pex_obj *obj, int flags, const char *executable,
pex_djgpp_exec_child (struct pex_obj *obj, int flags, const char *executable,
                      char * const * argv, char * const * env,
                      char * const * argv, char * const * env,
                      int in, int out, int errdes,
                      int in, int out, int errdes,
                      int toclose ATTRIBUTE_UNUSED, const char **errmsg,
                      int toclose ATTRIBUTE_UNUSED, const char **errmsg,
                      int *err)
                      int *err)
{
{
  int org_in, org_out, org_errdes;
  int org_in, org_out, org_errdes;
  int status;
  int status;
  int *statuses;
  int *statuses;
 
 
  org_in = -1;
  org_in = -1;
  org_out = -1;
  org_out = -1;
  org_errdes = -1;
  org_errdes = -1;
 
 
  if (in != STDIN_FILE_NO)
  if (in != STDIN_FILE_NO)
    {
    {
      org_in = dup (STDIN_FILE_NO);
      org_in = dup (STDIN_FILE_NO);
      if (org_in < 0)
      if (org_in < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup";
          *errmsg = "dup";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (dup2 (in, STDIN_FILE_NO) < 0)
      if (dup2 (in, STDIN_FILE_NO) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup2";
          *errmsg = "dup2";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (close (in) < 0)
      if (close (in) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "close";
          *errmsg = "close";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
    }
    }
 
 
  if (out != STDOUT_FILE_NO)
  if (out != STDOUT_FILE_NO)
    {
    {
      org_out = dup (STDOUT_FILE_NO);
      org_out = dup (STDOUT_FILE_NO);
      if (org_out < 0)
      if (org_out < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup";
          *errmsg = "dup";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (dup2 (out, STDOUT_FILE_NO) < 0)
      if (dup2 (out, STDOUT_FILE_NO) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup2";
          *errmsg = "dup2";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (close (out) < 0)
      if (close (out) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "close";
          *errmsg = "close";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
    }
    }
 
 
  if (errdes != STDERR_FILE_NO
  if (errdes != STDERR_FILE_NO
      || (flags & PEX_STDERR_TO_STDOUT) != 0)
      || (flags & PEX_STDERR_TO_STDOUT) != 0)
    {
    {
      org_errdes = dup (STDERR_FILE_NO);
      org_errdes = dup (STDERR_FILE_NO);
      if (org_errdes < 0)
      if (org_errdes < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup";
          *errmsg = "dup";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (dup2 ((flags & PEX_STDERR_TO_STDOUT) != 0 ? STDOUT_FILE_NO : errdes,
      if (dup2 ((flags & PEX_STDERR_TO_STDOUT) != 0 ? STDOUT_FILE_NO : errdes,
                 STDERR_FILE_NO) < 0)
                 STDERR_FILE_NO) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup2";
          *errmsg = "dup2";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (errdes != STDERR_FILE_NO)
      if (errdes != STDERR_FILE_NO)
        {
        {
          if (close (errdes) < 0)
          if (close (errdes) < 0)
            {
            {
              *err = errno;
              *err = errno;
              *errmsg = "close";
              *errmsg = "close";
              return (pid_t) -1;
              return (pid_t) -1;
            }
            }
        }
        }
    }
    }
 
 
  if (env)
  if (env)
    status = (((flags & PEX_SEARCH) != 0 ? spawnvpe : spawnve)
    status = (((flags & PEX_SEARCH) != 0 ? spawnvpe : spawnve)
              (P_WAIT, executable, argv, env));
              (P_WAIT, executable, argv, env));
  else
  else
    status = (((flags & PEX_SEARCH) != 0 ? spawnvp : spawnv)
    status = (((flags & PEX_SEARCH) != 0 ? spawnvp : spawnv)
              (P_WAIT, executable, argv));
              (P_WAIT, executable, argv));
 
 
  if (status == -1)
  if (status == -1)
    {
    {
      *err = errno;
      *err = errno;
      *errmsg = ((flags & PEX_SEARCH) != 0) ? "spawnvp" : "spawnv";
      *errmsg = ((flags & PEX_SEARCH) != 0) ? "spawnvp" : "spawnv";
    }
    }
 
 
  if (in != STDIN_FILE_NO)
  if (in != STDIN_FILE_NO)
    {
    {
      if (dup2 (org_in, STDIN_FILE_NO) < 0)
      if (dup2 (org_in, STDIN_FILE_NO) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup2";
          *errmsg = "dup2";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (close (org_in) < 0)
      if (close (org_in) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "close";
          *errmsg = "close";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
    }
    }
 
 
  if (out != STDOUT_FILE_NO)
  if (out != STDOUT_FILE_NO)
    {
    {
      if (dup2 (org_out, STDOUT_FILE_NO) < 0)
      if (dup2 (org_out, STDOUT_FILE_NO) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup2";
          *errmsg = "dup2";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (close (org_out) < 0)
      if (close (org_out) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "close";
          *errmsg = "close";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
    }
    }
 
 
  if (errdes != STDERR_FILE_NO
  if (errdes != STDERR_FILE_NO
      || (flags & PEX_STDERR_TO_STDOUT) != 0)
      || (flags & PEX_STDERR_TO_STDOUT) != 0)
    {
    {
      if (dup2 (org_errdes, STDERR_FILE_NO) < 0)
      if (dup2 (org_errdes, STDERR_FILE_NO) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "dup2";
          *errmsg = "dup2";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
      if (close (org_errdes) < 0)
      if (close (org_errdes) < 0)
        {
        {
          *err = errno;
          *err = errno;
          *errmsg = "close";
          *errmsg = "close";
          return (pid_t) -1;
          return (pid_t) -1;
        }
        }
    }
    }
 
 
  /* Save the exit status for later.  When we are called, obj->count
  /* Save the exit status for later.  When we are called, obj->count
     is the number of children which have executed before this
     is the number of children which have executed before this
     one.  */
     one.  */
  statuses = (int *) obj->sysdep;
  statuses = (int *) obj->sysdep;
  statuses = XRESIZEVEC (int, statuses, obj->count + 1);
  statuses = XRESIZEVEC (int, statuses, obj->count + 1);
  statuses[obj->count] = status;
  statuses[obj->count] = status;
  obj->sysdep = (void *) statuses;
  obj->sysdep = (void *) statuses;
 
 
  return (pid_t) obj->count;
  return (pid_t) obj->count;
}
}
 
 
/* Wait for a child process to complete.  Actually the child process
/* Wait for a child process to complete.  Actually the child process
   has already completed, and we just need to return the exit
   has already completed, and we just need to return the exit
   status.  */
   status.  */
 
 
static int
static int
pex_djgpp_wait (struct pex_obj *obj, pid_t pid, int *status,
pex_djgpp_wait (struct pex_obj *obj, pid_t pid, int *status,
                struct pex_time *time, int done ATTRIBUTE_UNUSED,
                struct pex_time *time, int done ATTRIBUTE_UNUSED,
                const char **errmsg ATTRIBUTE_UNUSED,
                const char **errmsg ATTRIBUTE_UNUSED,
                int *err ATTRIBUTE_UNUSED)
                int *err ATTRIBUTE_UNUSED)
{
{
  int *statuses;
  int *statuses;
 
 
  if (time != NULL)
  if (time != NULL)
    memset (time, 0, sizeof *time);
    memset (time, 0, sizeof *time);
 
 
  statuses = (int *) obj->sysdep;
  statuses = (int *) obj->sysdep;
  *status = statuses[pid];
  *status = statuses[pid];
 
 
  return 0;
  return 0;
}
}
 
 

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