sysutil.c

#include "sysutil.h"
#include "utility.h"
#include "tunables.h"
#include "port/porting_junk.h"
#include <signal.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <netinet/in.h>
#include <stdio.h>
#include <dirent.h>
#include <time.h>
#include <arpa/inet.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include <ctype.h>
#include <sys/wait.h>
#include <sys/time.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <limits.h>
#include <syslog.h>
#include <utime.h>
#include <netdb.h>

構成
struct	vsf_sysutil_sig_details
struct	vsf_sysutil_sockaddr
マクロ定義
#define	PRIVATE_HANDS_OFF_syscall_retval   syscall_retval
#define	PRIVATE_HANDS_OFF_exit_status   exit_status
#define	_FILE_OFFSET_BITS   64
#define	_LARGEFILE_SOURCE   1
#define	_LARGEFILE64_SOURCE   1
#define	_LARGE_FILES   1
#define	SHUT_RDWR   2
#define	SHUT_RD   0
関数
static void	vsf_sysutil_common_sighandler (int signum)
static int	vsf_sysutil_translate_sig (const enum EVSFSysUtilSignal sig)
static void	vsf_sysutil_set_sighandler (int sig, void(*p_handlefunc)(int))
static int	vsf_sysutil_translate_memprot (const enum EVSFSysUtilMapPermission perm)
static int	vsf_sysutil_translate_openmode (const enum EVSFSysUtilOpenMode mode)
static void	vsf_sysutil_alloc_statbuf (struct vsf_sysutil_statbuf **p_ptr)
void	vsf_sysutil_sockaddr_alloc (struct vsf_sysutil_sockaddr **p_sockptr)
static int	lock_internal (int fd, int lock_type)
void	vsf_sysutil_check_pending_actions (const enum EVSFSysUtilInterruptContext context, int retval, int fd)
void	vsf_sysutil_install_sighandler (const enum EVSFSysUtilSignal sig, vsf_sighandle_t handler, void *p_private)
void	vsf_sysutil_default_sig (const enum EVSFSysUtilSignal sig)
void	vsf_sysutil_install_null_sighandler (const enum EVSFSysUtilSignal sig)
void	vsf_sysutil_install_async_sighandler (const enum EVSFSysUtilSignal sig, vsf_async_sighandle_t handler)
void	vsf_sysutil_block_sig (const enum EVSFSysUtilSignal sig)
void	vsf_sysutil_unblock_sig (const enum EVSFSysUtilSignal sig)
void	vsf_sysutil_install_io_handler (vsf_context_io_t handler, void *p_private)
void	vsf_sysutil_uninstall_io_handler (void)
void	vsf_sysutil_set_alarm (const unsigned int trigger_seconds)
void	vsf_sysutil_clear_alarm (void)
int	vsf_sysutil_read (const int fd, void *p_buf, const unsigned int size)
int	vsf_sysutil_write (const int fd, const void *p_buf, const unsigned int size)
int	vsf_sysutil_read_loop (const int fd, void *p_buf, unsigned int size)
int	vsf_sysutil_write_loop (const int fd, const void *p_buf, unsigned int size)
filesize_t	vsf_sysutil_get_file_offset (const int file_fd)
void	vsf_sysutil_lseek_to (const int fd, filesize_t seek_pos)
void *	vsf_sysutil_malloc (unsigned int size)
void *	vsf_sysutil_realloc (void *p_ptr, unsigned int size)
void	vsf_sysutil_free (void *p_ptr)
unsigned int	vsf_sysutil_getpid (void)
int	vsf_sysutil_fork (void)
int	vsf_sysutil_fork_failok (void)
void	vsf_sysutil_set_exit_func (exitfunc_t exitfunc)
void	vsf_sysutil_exit (int exit_code)
vsf_sysutil_wait_retval	vsf_sysutil_wait (void)
int	vsf_sysutil_wait_reap_one (void)
int	vsf_sysutil_wait_get_retval (const struct vsf_sysutil_wait_retval *p_waitret)
int	vsf_sysutil_wait_exited_normally (const struct vsf_sysutil_wait_retval *p_waitret)
int	vsf_sysutil_wait_get_exitcode (const struct vsf_sysutil_wait_retval *p_waitret)
void	vsf_sysutil_activate_keepalive (int fd)
void	vsf_sysutil_activate_reuseaddr (int fd)
void	vsf_sysutil_set_nodelay (int fd)
void	vsf_sysutil_activate_sigurg (int fd)
void	vsf_sysutil_activate_oobinline (int fd)
void	vsf_sysutil_set_iptos_throughput (int fd)
void	vsf_sysutil_activate_linger (int fd)
void	vsf_sysutil_deactivate_linger_failok (int fd)
void	vsf_sysutil_activate_noblock (int fd)
void	vsf_sysutil_deactivate_noblock (int fd)
int	vsf_sysutil_recv_peek (const int fd, void *p_buf, unsigned int len)
int	vsf_sysutil_atoi (const char *p_str)
filesize_t	vsf_sysutil_a_to_filesize_t (const char *p_str)
const char *	vsf_sysutil_ulong_to_str (unsigned long the_ulong)
const char *	vsf_sysutil_filesize_t_to_str (filesize_t the_filesize)
const char *	vsf_sysutil_double_to_str (double the_double)
const char *	vsf_sysutil_uint_to_octal (unsigned int the_uint)
unsigned int	vsf_sysutil_octal_to_uint (const char *p_str)
int	vsf_sysutil_toupper (int the_char)
int	vsf_sysutil_isspace (int the_char)
int	vsf_sysutil_isprint (int the_char)
int	vsf_sysutil_isalnum (int the_char)
int	vsf_sysutil_isdigit (int the_char)
char *	vsf_sysutil_getcwd (char *p_dest, const unsigned int buf_size)
int	vsf_sysutil_mkdir (const char *p_dirname, const unsigned int mode)
int	vsf_sysutil_rmdir (const char *p_dirname)
int	vsf_sysutil_chdir (const char *p_dirname)
int	vsf_sysutil_rename (const char *p_from, const char *p_to)
vsf_sysutil_dir *	vsf_sysutil_opendir (const char *p_dirname)
void	vsf_sysutil_closedir (struct vsf_sysutil_dir *p_dir)
const char *	vsf_sysutil_next_dirent (struct vsf_sysutil_dir *p_dir)
unsigned int	vsf_sysutil_strlen (const char *p_text)
char *	vsf_sysutil_strdup (const char *p_str)
void	vsf_sysutil_memclr (void *p_dest, unsigned int size)
void	vsf_sysutil_memcpy (void *p_dest, const void *p_src, const unsigned int size)
void	vsf_sysutil_strcpy (char *p_dest, const char *p_src, unsigned int maxsize)
int	vsf_sysutil_memcmp (const void *p_src1, const void *p_src2, unsigned int size)
int	vsf_sysutil_strcmp (const char *p_src1, const char *p_src2)
unsigned int	vsf_sysutil_getpagesize (void)
void	vsf_sysutil_memprotect (void *p_addr, unsigned int len, const enum EVSFSysUtilMapPermission perm)
void	vsf_sysutil_memunmap (void *p_start, unsigned int length)
int	vsf_sysutil_open_file (const char *p_filename, const enum EVSFSysUtilOpenMode mode)
int	vsf_sysutil_create_file (const char *p_filename)
int	vsf_sysutil_create_overwrite_file (const char *p_filename)
int	vsf_sysutil_create_or_open_file (const char *p_filename, unsigned int mode)
void	vsf_sysutil_dupfd2 (int old_fd, int new_fd)
void	vsf_sysutil_close (int fd)
int	vsf_sysutil_close_failok (int fd)
int	vsf_sysutil_truncate (int fd, filesize_t length)
int	vsf_sysutil_unlink (const char *p_dead)
int	vsf_sysutil_write_access (const char *p_filename)
void	vsf_sysutil_fstat (int fd, struct vsf_sysutil_statbuf **p_ptr)
int	vsf_sysutil_stat (const char *p_name, struct vsf_sysutil_statbuf **p_ptr)
int	vsf_sysutil_lstat (const char *p_name, struct vsf_sysutil_statbuf **p_ptr)
void	vsf_sysutil_dir_stat (const struct vsf_sysutil_dir *p_dir, struct vsf_sysutil_statbuf **p_ptr)
int	vsf_sysutil_statbuf_is_regfile (const struct vsf_sysutil_statbuf *p_stat)
int	vsf_sysutil_statbuf_is_symlink (const struct vsf_sysutil_statbuf *p_stat)
int	vsf_sysutil_statbuf_is_socket (const struct vsf_sysutil_statbuf *p_stat)
int	vsf_sysutil_statbuf_is_dir (const struct vsf_sysutil_statbuf *p_stat)
const char *	vsf_sysutil_statbuf_get_perms (const struct vsf_sysutil_statbuf *p_statbuf)
const char *	vsf_sysutil_statbuf_get_date (const struct vsf_sysutil_statbuf *p_statbuf, int use_localtime)
const char *	vsf_sysutil_statbuf_get_numeric_date (const struct vsf_sysutil_statbuf *p_statbuf, int use_localtime)
filesize_t	vsf_sysutil_statbuf_get_size (const struct vsf_sysutil_statbuf *p_statbuf)
int	vsf_sysutil_statbuf_get_uid (const struct vsf_sysutil_statbuf *p_statbuf)
int	vsf_sysutil_statbuf_get_gid (const struct vsf_sysutil_statbuf *p_statbuf)
unsigned int	vsf_sysutil_statbuf_get_links (const struct vsf_sysutil_statbuf *p_statbuf)
int	vsf_sysutil_statbuf_is_readable_other (const struct vsf_sysutil_statbuf *p_statbuf)
const char *	vsf_sysutil_statbuf_get_sortkey_mtime (const struct vsf_sysutil_statbuf *p_statbuf)
void	vsf_sysutil_fchown (const int fd, const int uid, const int gid)
void	vsf_sysutil_fchmod (const int fd, unsigned int mode)
int	vsf_sysutil_chmod (const char *p_filename, unsigned int mode)
int	vsf_sysutil_lock_file_write (int fd)
int	vsf_sysutil_lock_file_read (int fd)
void	vsf_sysutil_unlock_file (int fd)
int	vsf_sysutil_readlink (const char *p_filename, char *p_dest, unsigned int bufsiz)
int	vsf_sysutil_retval_is_error (int retval)
enum EVSFSysUtilError	vsf_sysutil_get_error (void)
int	vsf_sysutil_get_ipv4_sock (void)
int	vsf_sysutil_get_ipv6_sock (void)
vsf_sysutil_socketpair_retval	vsf_sysutil_unix_stream_socketpair (void)
int	vsf_sysutil_bind (int fd, const struct vsf_sysutil_sockaddr *p_sockptr)
void	vsf_sysutil_listen (int fd, const unsigned int backlog)
int	vsf_sysutil_accept_timeout (int fd, struct vsf_sysutil_sockaddr *p_sockaddr, unsigned int wait_seconds)
int	vsf_sysutil_connect_timeout (int fd, const struct vsf_sysutil_sockaddr *p_addr, unsigned int wait_seconds)
void	vsf_sysutil_getsockname (int fd, struct vsf_sysutil_sockaddr **p_sockptr)
void	vsf_sysutil_getpeername (int fd, struct vsf_sysutil_sockaddr **p_sockptr)
void	vsf_sysutil_shutdown_failok (int fd)
void	vsf_sysutil_shutdown_read_failok (int fd)
void	vsf_sysutil_sockaddr_clear (struct vsf_sysutil_sockaddr **p_sockptr)
void	vsf_sysutil_sockaddr_alloc_ipv4 (struct vsf_sysutil_sockaddr **p_sockptr)
void	vsf_sysutil_sockaddr_alloc_ipv6 (struct vsf_sysutil_sockaddr **p_sockptr)
void	vsf_sysutil_sockaddr_clone (struct vsf_sysutil_sockaddr **p_sockptr, const struct vsf_sysutil_sockaddr *p_src)
int	vsf_sysutil_sockaddr_addr_equal (const struct vsf_sysutil_sockaddr *p1, const struct vsf_sysutil_sockaddr *p2)
int	vsf_sysutil_sockaddr_is_ipv6 (const struct vsf_sysutil_sockaddr *p_sockaddr)
void	vsf_sysutil_sockaddr_set_ipv4addr (struct vsf_sysutil_sockaddr *p_sockptr, const unsigned char *p_raw)
void	vsf_sysutil_sockaddr_set_ipv6addr (struct vsf_sysutil_sockaddr *p_sockptr, const unsigned char *p_raw)
const void *	vsf_sysutil_sockaddr_ipv6_v4 (const struct vsf_sysutil_sockaddr *p_addr)
const void *	vsf_sysutil_sockaddr_ipv4_v6 (const struct vsf_sysutil_sockaddr *p_addr)
void *	vsf_sysutil_sockaddr_get_raw_addr (struct vsf_sysutil_sockaddr *p_sockptr)
unsigned int	vsf_sysutil_get_ipaddr_size (void)
int	vsf_sysutil_get_ipsock (const struct vsf_sysutil_sockaddr *p_addr)
void	vsf_sysutil_sockaddr_set_any (struct vsf_sysutil_sockaddr *p_sockaddr)
void	vsf_sysutil_sockaddr_set_port (struct vsf_sysutil_sockaddr *p_sockptr, unsigned short the_port)
int	vsf_sysutil_is_port_reserved (unsigned short the_port)
const char *	vsf_sysutil_inet_ntop (const struct vsf_sysutil_sockaddr *p_sockptr)
const char *	vsf_sysutil_inet_ntoa (const void *p_raw_addr)
int	vsf_sysutil_inet_aton (const char *p_text, struct vsf_sysutil_sockaddr *p_addr)
void	vsf_sysutil_dns_resolve (struct vsf_sysutil_sockaddr **p_sockptr, const char *p_name)
vsf_sysutil_user *	vsf_sysutil_getpwuid (const int uid)
vsf_sysutil_user *	vsf_sysutil_getpwnam (const char *p_user)
const char *	vsf_sysutil_user_getname (const struct vsf_sysutil_user *p_user)
const char *	vsf_sysutil_user_get_homedir (const struct vsf_sysutil_user *p_user)
int	vsf_sysutil_user_getuid (const struct vsf_sysutil_user *p_user)
int	vsf_sysutil_user_getgid (const struct vsf_sysutil_user *p_user)
vsf_sysutil_group *	vsf_sysutil_getgrgid (const int gid)
const char *	vsf_sysutil_group_getname (const struct vsf_sysutil_group *p_group)
unsigned char	vsf_sysutil_get_random_byte (void)
int	vsf_sysutil_running_as_root (void)
void	vsf_sysutil_setuid (const struct vsf_sysutil_user *p_user)
void	vsf_sysutil_setuid_numeric (int uid)
void	vsf_sysutil_setgid (const struct vsf_sysutil_user *p_user)
void	vsf_sysutil_setgid_numeric (int gid)
int	vsf_sysutil_geteuid (void)
int	vsf_sysutil_getegid (void)
void	vsf_sysutil_seteuid (const struct vsf_sysutil_user *p_user)
void	vsf_sysutil_setegid (const struct vsf_sysutil_user *p_user)
void	vsf_sysutil_seteuid_numeric (int uid)
void	vsf_sysutil_setegid_numeric (int gid)
void	vsf_sysutil_clear_supp_groups (void)
void	vsf_sysutil_initgroups (const struct vsf_sysutil_user *p_user)
void	vsf_sysutil_chroot (const char *p_root_path)
unsigned int	vsf_sysutil_get_umask (void)
void	vsf_sysutil_set_umask (unsigned int new_umask)
void	vsf_sysutil_make_session_leader (void)
void	vsf_sysutil_reopen_standard_fds (void)
void	vsf_sysutil_tzset (void)
const char *	vsf_sysutil_get_current_date (int use_localtime)
void	vsf_sysutil_update_cached_time (void)
long	vsf_sysutil_get_cached_time_sec (void)
long	vsf_sysutil_get_cached_time_usec (void)
void	vsf_sysutil_qsort (void *p_base, unsigned int num_elem, unsigned int elem_size, int(*p_compar)(const void *, const void *))
void	vsf_sysutil_sleep (double seconds)
char *	vsf_sysutil_getenv (const char *p_var)
void	vsf_sysutil_openlog (void)
void	vsf_sysutil_syslog (const char *p_text, int severe)
long	vsf_sysutil_parse_time (const char *p_text)
int	vsf_sysutil_setmodtime (const char *p_file, long the_time, int is_localtime)
変数
static unsigned int	s_current_umask
static struct timeval	s_current_time
static int	s_current_pid = -1
static exitfunc_t	s_exit_func
static long	s_timezone
static struct vsf_sysutil_sig_details	s_sig_details [NSIG]
static vsf_context_io_t	s_io_handler
static void *	s_p_io_handler_private
static int	s_io_handler_running

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