sysdeps/mach/hurd/fexecve.c

   1 /* Copyright (C) 1993-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <https://www.gnu.org/licenses/>.  */
  17
  18 #include <unistd.h>
  19 #include <hurd.h>
  20 #include <hurd/fd.h>
  21 #include <errno.h>
  22
  23 /* Execute the file FD refers to, overlaying the running program image.  */
  24
  25 int
  26 fexecve (int fd, char *const argv[], char *const envp[])
  27 {
  28   file_t file;
  29   error_t err;
  30   enum retry_type doretry;
  31   char retryname[1024];
  32
  33   err = HURD_DPORT_USE (fd,
  34       __dir_lookup (port, "", O_EXEC, 0, &doretry, retryname, &file));
  35
  36   if (! err && (doretry != FS_RETRY_NORMAL || retryname[0] != '\0'))
  37     err = EGRATUITOUS;
  38   if (err)
  39     return __hurd_fail(err);
  40
  41   err = _hurd_exec_paths (__mach_task_self (), file, NULL, NULL, argv, envp);
  42   if (! err)
  43     err = EGRATUITOUS;
  44
  45   __mach_port_deallocate (__mach_task_self (), file);
  46   return __hurd_fail (err);
  47 }