93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/* Copyright (C) 1991-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <unistd.h>
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#include <getcwd.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <stdio.h>
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/* Replace the current process, executing FILE_NAME with arguments ARGV and
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environment ENVP. ARGV and ENVP are terminated by NULL pointers. */
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int
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__execveat (int dirfd, const char *file_name, char *const argv[],
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char *const envp[], int flags)
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{
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error_t err;
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char *concat_name = NULL;
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const char *abs_path;
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file_t file = __file_name_lookup_at (dirfd, flags, file_name, O_EXEC, 0);
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if (file == MACH_PORT_NULL)
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return -1;
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if (file_name[0] == '/')
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{
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/* Already an absolute path */
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abs_path = file_name;
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}
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else
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{
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/* Relative path */
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char *cwd;
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if (dirfd == AT_FDCWD)
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{
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cwd = __getcwd (NULL, 0);
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if (cwd == NULL)
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{
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__mach_port_deallocate (__mach_task_self (), file);
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return -1;
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}
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}
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else
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{
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err = HURD_DPORT_USE (dirfd,
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(cwd = __hurd_canonicalize_directory_name_internal (port, NULL, 0),
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cwd == NULL ? errno : 0));
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if (err)
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{
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__mach_port_deallocate (__mach_task_self (), file);
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return __hurd_fail (err);
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}
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}
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int res = __asprintf (&concat_name, "%s/%s", cwd, file_name);
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free (cwd);
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if (res == -1)
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{
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__mach_port_deallocate (__mach_task_self (), file);
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return -1;
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}
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abs_path = concat_name;
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}
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/* Hopefully this will not return. */
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err = _hurd_exec_paths (__mach_task_self (), file,
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file_name, abs_path, argv, envp);
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/* Oh well. Might as well be tidy. */
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__mach_port_deallocate (__mach_task_self (), file);
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free (concat_name);
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return __hurd_fail (err);
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}
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weak_alias (__execveat, execveat)
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