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/* ply-utils.h - random useful functions and macros
*
* Copyright (C) 2007 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Written By: Ray Strode <rstrode@redhat.com>
*/
#ifndef PLY_UTILS_H
#define PLY_UTILS_H
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#ifndef MIN
#define MIN(a,b) ((a) <= (b)? (a) : (b))
#endif
#ifndef MAX
#define MAX(a,b) ((a) >= (b)? (a) : (b))
#endif
#ifndef CLAMP
#define CLAMP(a,b,c) (MIN (MAX ((a), (b)), (c)))
#endif
typedef intptr_t ply_module_handle_t;
typedef void (* ply_module_function_t) (void);
typedef intptr_t ply_daemon_handle_t;
#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
bool ply_open_unidirectional_pipe (int *sender_fd,
int *receiver_fd);
int ply_connect_to_unix_socket (const char *path,
bool is_abstract);
int ply_listen_to_unix_socket (const char *path,
bool is_abstract);
bool ply_get_credentials_from_fd (int fd,
pid_t *pid,
uid_t *uid,
gid_t *gid);
bool ply_write (int fd,
const void *buffer,
size_t number_of_bytes);
bool ply_read (int fd,
void *buffer,
size_t number_of_bytes);
bool ply_fd_has_data (int fd);
bool ply_fd_can_take_data (int fd);
bool ply_fd_may_block (int fd);
char **ply_copy_string_array (const char * const *array);
void ply_free_string_array (char **array);
void ply_close_all_fds (void);
double ply_get_timestamp (void);
void ply_save_errno (void);
void ply_restore_errno (void);
bool ply_directory_exists (const char *dir);
bool ply_file_exists (const char *file);
void ply_list_directory (const char *dir);
ply_module_handle_t *ply_open_module (const char *module_path);
ply_module_function_t ply_module_look_up_function (ply_module_handle_t *handle,
const char *function_name);
void ply_close_module (ply_module_handle_t *handle);
bool ply_create_directory (const char *directory);
ply_daemon_handle_t *ply_create_daemon (void);
bool ply_detach_daemon (ply_daemon_handle_t *handle,
int exit_code);
#endif
#endif /* PLY_UTILS_H */
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
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