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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>
#include <sys/types.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
#define PLY_UTF8_CHARACTER_SIZE_MAX 4
typedef intptr_t ply_module_handle_t;
typedef void (*ply_module_function_t) (void);
typedef intptr_t ply_daemon_handle_t;
typedef enum
{
PLY_UNIX_SOCKET_TYPE_CONCRETE = 0,
PLY_UNIX_SOCKET_TYPE_ABSTRACT,
PLY_UNIX_SOCKET_TYPE_TRIMMED_ABSTRACT
} ply_unix_socket_type_t;
#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
#define ply_round_to_multiple(n, m) (((n) + (((m) - 1))) & ~((m) - 1))
bool ply_open_unidirectional_pipe (int *sender_fd,
int *receiver_fd);
int ply_connect_to_unix_socket (const char *path,
ply_unix_socket_type_t type);
int ply_listen_to_unix_socket (const char *path,
ply_unix_socket_type_t type);
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_write_uint32 (int fd,
uint32_t value);
bool ply_read (int fd,
void *buffer,
size_t number_of_bytes);
bool ply_read_uint32 (int fd,
uint32_t *value);
bool ply_fd_has_data (int fd);
bool ply_set_fd_as_blocking (int fd);
char **ply_copy_string_array (const char *const *array);
void ply_free_string_array (char **array);
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);
bool ply_character_device_exists (const char *device);
ply_module_handle_t *ply_open_module (const char *module_path);
ply_module_handle_t *ply_open_built_in_module (void);
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);
bool ply_create_file_link (const char *source,
const char *destination);
void ply_show_new_kernel_messages (bool should_show);
ply_daemon_handle_t *ply_create_daemon (void);
bool ply_detach_daemon (ply_daemon_handle_t *handle,
int exit_code);
int ply_utf8_character_get_size (const char *string,
size_t n);
int ply_utf8_string_get_length (const char *string,
size_t n);
char *ply_get_process_command_line (pid_t pid);
pid_t ply_get_process_parent_pid (pid_t pid);
void ply_set_device_scale (int device_scale);
int ply_get_device_scale (uint32_t width,
uint32_t height,
uint32_t width_mm,
uint32_t height_mm);
const char *ply_kernel_command_line_get_string_after_prefix (const char *prefix);
bool ply_kernel_command_line_has_argument (const char *argument);
void ply_kernel_command_line_override (const char *command_line);
char *ply_kernel_command_line_get_key_value (const char *key);
double ply_strtod(const char *str);
#endif
#endif /* PLY_UTILS_H */
/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
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