93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
|
/* Copyright (C) 1991-2022 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 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.
|
||
|
|
|
||
|
|
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
|
||
|
|
Lesser General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public
|
||
|
|
License along with the GNU C Library; if not, see
|
||
|
|
<https://www.gnu.org/licenses/>. */
|
||
|
|
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <getcwd.h>
|
||
|
|
#include <hurd.h>
|
||
|
|
#include <hurd/fd.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
/* Replace the current process, executing FILE_NAME with arguments ARGV and
|
||
|
|
environment ENVP. ARGV and ENVP are terminated by NULL pointers. */
|
||
|
|
int
|
||
|
|
__execveat (int dirfd, const char *file_name, char *const argv[],
|
||
|
|
char *const envp[], int flags)
|
||
|
|
{
|
||
|
|
error_t err;
|
||
|
|
char *concat_name = NULL;
|
||
|
|
const char *abs_path;
|
||
|
|
|
||
|
|
file_t file = __file_name_lookup_at (dirfd, flags, file_name, O_EXEC, 0);
|
||
|
|
if (file == MACH_PORT_NULL)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
if (file_name[0] == '/')
|
||
|
|
{
|
||
|
|
/* Already an absolute path */
|
||
|
|
abs_path = file_name;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
/* Relative path */
|
||
|
|
char *cwd;
|
||
|
|
if (dirfd == AT_FDCWD)
|
||
|
|
{
|
||
|
|
cwd = __getcwd (NULL, 0);
|
||
|
|
if (cwd == NULL)
|
||
|
|
{
|
||
|
|
__mach_port_deallocate (__mach_task_self (), file);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
err = HURD_DPORT_USE (dirfd,
|
||
|
|
(cwd = __hurd_canonicalize_directory_name_internal (port, NULL, 0),
|
||
|
|
cwd == NULL ? errno : 0));
|
||
|
|
if (err)
|
||
|
|
{
|
||
|
|
__mach_port_deallocate (__mach_task_self (), file);
|
||
|
|
return __hurd_fail (err);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int res = __asprintf (&concat_name, "%s/%s", cwd, file_name);
|
||
|
|
free (cwd);
|
||
|
|
if (res == -1)
|
||
|
|
{
|
||
|
|
__mach_port_deallocate (__mach_task_self (), file);
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
abs_path = concat_name;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Hopefully this will not return. */
|
||
|
|
err = _hurd_exec_paths (__mach_task_self (), file,
|
||
|
|
file_name, abs_path, argv, envp);
|
||
|
|
|
||
|
|
/* Oh well. Might as well be tidy. */
|
||
|
|
__mach_port_deallocate (__mach_task_self (), file);
|
||
|
|
free (concat_name);
|
||
|
|
|
||
|
|
return __hurd_fail (err);
|
||
|
|
}
|
||
|
|
|
||
|
|
weak_alias (__execveat, execveat)
|