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SUS_Summary File Reference

Detailed Description

Summary of Standard UNIX Functions, Structures, and Unions.

This page summarizes the 307 functions, 38 structures, and 2 unions included in Advanced UNIX Programming, 2nd Edition.

Note that signal and sigset are listed as variables due to a parsing problem with Doxygen, which was used to generate this page.

Definition in file SUS_Summary.

Go to the source code of this file.

Compounds

struct addrinfo

struct aiocb

struct dirent

struct flock

struct group

struct hostent

struct if_nameindex

struct iovec

struct ipc_perm

struct itimerspec

struct itimerval

struct mq_attr

struct msg

struct msghdr

struct msqid_ds

struct netent

struct passwd

struct pollfd

struct protoent

struct rlimit

struct rusage

struct sembuf

struct semid_ds

union semun

struct servent

struct sigaction

struct sigevent

struct siginfo_t

union sigval

struct SimpleSem

struct sockaddr_in

struct sockaddr_in6

struct sockaddr_un

struct stat

struct statvfs

struct termios

struct timespec

struct timeval

struct tm

struct tms

struct utimbuf

Functions

void FD_CLR (int fd, fd_set *fdset)

int FD_ISSET (int fd, fd_set *fdset)

void FD_SET (int fd, fd_set *fdset)

void FD_ZERO (fd_set *fdset)

void _Exit (int status)

void _exit (int status)

void _longjmp (jmp_buf loc_info, int val)

int _setjmp (jmp_buf loc_info)

void abort (void)

int accept (int socket_fd, struct sockaddr *sa, socklen_t *sa_len)

int access (const char *path, int what)

int aio_cancel (int fd, struct aiocb *aiocbp)

int aio_error (const struct aiocb *aiocbp)

int aio_fsync (int op, struct aiocb *aiocbp)

int aio_read (struct aiocb *aiocbp)

ssize_t aio_return (struct aiocb *aiocbp)

int aio_suspend (const struct aiocb *const list[], int cbcnt, const struct timespec *timeout)

int aio_write (struct aiocb *aiocbp)

unsigned alarm (unsigned secs)

char * asctime (const struct tm *tmbuf)

int atexit (void(*fcn)(void))

int bind (int socket_fd, const struct sockaddr *sa, socklen_t sa_len)

speed_t cfgetispeed (const struct termios *tp)

speed_t cfgetospeed (const struct termios *tp)

int cfsetispeed (struct termios *tp, speed_t speed)

int cfsetospeed (struct termios *tp, speed_t speed)

int chdir (const char *path)

int chmod (const char *path, mode_t mode)

int chown (const char *path, uid_t uid, gid_t gid)

int chroot (const char *path)

clock_t clock (void)

int clock_getcpuclockid (pid_t pid, clockid_t *clock_id)

int clock_getres (clockid_t clock_id, struct timespec *res)

int clock_gettime (clockid_t clock_id, struct timespec *tp)

int clock_nanosleep (clockid_t clock_id, int flags, const struct timespec *nsecs, struct timespec *remain)

int clock_settime (clockid_t clock_id, const struct timespec *tp)

int close (int fd)

int closedir (DIR *dirp)

size_t confstr (int name, char *buf, size_t len)

int connect (int socket_fd, const struct sockaddr *sa, socklen_t sa_len)

int creat (const char *path, mode_t perms)

char * ctermid (char *buf)

char * ctime (const time_t *t)

double difftime (time_t time1, time_t time0)

int dup (int fd)

int dup2 (int fd, int fd2)

void endhostent (void)

void endnetent (void)

void endprotoent (void)

void endservent (void)

int execl (const char *path, const char *arg0, const char *arg1,..., (char *)NULL)

int execle (const char *path, const char *arg0, const char *arg1,..., (char *)NULL, char *const envv[])

int execlp (const char *file, const char *arg0, const char *arg1,..., (char *)NULL)

int execv (const char *path, char *const argv[])

int execve (const char *path, char *const argv[], char *const envv[])

int execvp (const char *file, char *const argv[])

void exit (int status)

int fchdir (int fd)

int fchmod (int fd, mode_t mode)

int fchown (int fd, uid_t uid, gid_t gid)

int fcntl (int fd, int op,...)

int fdatasync (int fd)

pid_t fork (void)

long fpathconf (int fd, int name)

void freeaddrinfo (struct addrinfo *infop)

int fstat (int fd, struct stat *buf)

int fstatvfs (int fd, struct statvfs *buf)

int fsync (int fd)

key_t ftok (const char *path, int id)

int ftruncate (int fd, off_t length)

const char * gai_strerror (int code)

int getaddrinfo (const char *nodename, const char *servname, const struct addrinfo *hint, struct addrinfo **infop)

char * getcwd (char *buf, size_t bufsize)

tm * getdate (const char *s)

gid_t getegid (void)

char * getenv (const char *var)

uid_t geteuid (void)

gid_t getgid (void)

group * getgrgid (gid_t gid)

hostent * gethostbyaddr (const void *addr, socklen_t len, int family)

hostent * gethostbyname (const char *nodename,)

hostent * gethostent (void)

long gethostid (void)

int gethostname (char *name, size_t namelen)

int getitimer (int which, struct itimerval *val)

char * getlogin (void)

int getnameinfo (const struct sockaddr *sa, socklen_t sa_len, char *nodename, socklen_t nodelen, char *servname, socklen_t servlen, unsigned flags)

netent * getnetbyaddr (uint32_t net, int type)

netent * getnetbyname (const char *name)

netent * getnetent (void)

int getpeername (int socket_fd, struct sockaddr *sa, socklen_t *sa_len)

pid_t getpgid (pid_t pid)

pid_t getpid (void)

pid_t getppid (void)

protoent * getprotobyname (const char *name)

protoent * getprotobynumber (int proto)

protoent * getprotoent (void)

passwd * getpwuid (uid_t uid)

int getrlimit (int resource, struct rlimit *rlp)

int getrusage (int who, struct rusage *r_usage)

servent * getservbyname (const char *name, const char *proto)

servent * getservbyport (int port, const char *proto)

servent * getservent (void)

pid_t getsid (pid_t pid)

int getsockname (int socket_fd, struct sockaddr *sa, socklen_t *sa_len)

int getsockopt (int socket, int level, int option, const void *value, socklen_t *value_len)

int gettimeofday (struct timeval *tvalbuf, void *dummy)

uid_t getuid (void)

tm * gmtime (const time_t *t)

int grantpt (int fd)

uint32_t htonl (uint32_t hostnum)

uint16_t htons (uint16_t hostnum)

void if_freenameindex (struct if_nameindex *ptr)

char * if_indextoname (unsigned ifindex, char *ifname)

if_nameindex * if_nameindex (void)

unsigned if_nametoindex (const char *ifname)

in_addr_t inet_addr (const char *cp)

char * inet_ntoa (struct in_addr in)

const char * inet_ntop (int domain, const void *src, char *dst, socklen_t dst_len)

int inet_pton (int domain, const char *src, void *dst)

int ioctl (int fd, int req,...)

int isatty (int fd)

int kill (pid_t pid, int signum)

int killpg (pid_t pgrp, int signum)

int lchown (const char *path, uid_t uid, gid_t gid)

int link (const char *oldpath, const char *newpath)

int lio_listio (int mode, struct aiocb *const list[], int cbcnt, struct sigevent *sig)

int listen (int socket_fd, int backlog)

tm * localtime (const time_t *t)

int lockf (int fd, int op, off_t len)

void longjmp (jmp_buf loc_info, int val)

off_t lseek (int fd, off_t pos, int whence)

int lstat (const char *path, struct stat *buf)

int mkdir (const char *path, mode_t perms)

int mkfifo (const char *path, mode_t perms)

int mknod (const char *path, mode_t perms, dev_t dev)

int mkstemp (char *template)

time_t mktime (struct tm *tmbuf)

void * mmap (void *addr, size_t len, int prot, int flags, int fd, off_t off)

int mount (const char *source, const char *target, const char *type, unsigned long flags, const void *data)

int mq_close (mqd_t mqd)

int mq_getattr (mqd_t mqd, struct mq_attr *attr)

int mq_notify (mqd_t mqd, const struct sigevent *ep)

mqd_t mq_open (const char *name, int flags)

ssize_t mq_receive (mqd_t mqd, char *msg, size_t msgsize, unsigned *priorityp)

int mq_send (mqd_t mqd, const char *msg, size_t msgsize, unsigned priority)

int mq_setattr (mqd_t mqd, const struct mq_attr *attr, struct mq_attr *oldattr)

ssize_t mq_timedreceive (mqd_t mqd, char *msg, size_t msgsize, unsigned *priorityp const struct timespec *tmout)

int mq_timedsend (mqd_t mqd, const char *msg, size_t msgsize, unsigned priority const struct timespec *tmout)

int mq_unlink (const char *name)

int msgctl (int msqid, int cmd, struct msqid_ds *data)

int msgget (key_t key, int flags)

ssize_t msgrcv (int msqid, const void *msgp, size_t mtextsize, long msgtype, int flags)

int msgsnd (int msqid, const void *msgp, size_t msgsize, int flags)

int munmap (void *addr, size_t len)

int nanosleep (const struct timespec *nsecs, struct timespec *remain)

int nice (int incr)

uint32_t ntohl (uint32_t netnum)

uint16_t ntohs (uint16_t netnum)

int open (const char *path, int flags, mode_t perms)

DIR * opendir (const char *path)

long pathconf (const char *path, int name)

int pause (void)

int pipe (int pfd[2])

int poll (struct pollfd fdinfo[], nfds_t nfds, int timeout)

int posix_openpt (int oflag)

ssize_t pread (int fd, void *buf, size_t nbytes off_t offset)

int pselect (int nfds, fd_set *readset, fd_set *writeset, fd_set *errorset, const struct timespec *timeout, const sigset_t *sigmask)

int pthread_cancel (pthread_t thread_id)

void pthread_cleanup_pop (int execute)

void pthread_cleanup_push (void(*handler)(void *), void *arg)

int pthread_cond_signal (pthread_cond_t *cond)

int pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)

int pthread_create (pthread_t *thread_id, const pthread_attr_t *attr, void *(*start_fcn)(void *), void *arg)

int pthread_join (pthread_t thread_id, void **status_ptr)

int pthread_kill (pthread_t thread_id, int signum)

int pthread_mutex_lock (pthread_mutex_t *mutex)

int pthread_mutex_unlock (pthread_mutex_t *mutex)

int pthread_sigmask (int how, const sigset_t *set, sigset_t *oset)

void pthread_testcancel (void)

char * ptsname (int fd)

int putenv (char *string)

ssize_t pwrite (int fd, const void *buf, size_t nbytes off_t offset)

int raise (int signum)

ssize_t read (int fd, void *buf, size_t nbytes)

dirent * readdir (DIR *dirp)

int readdir_r (DIR *restrict dirp, struct dirent *entry, struct dirent **result)

ssize_t readlink (const char *path, char *buf, size_t bufsize)

ssize_t readv (int fd, const struct iovec *iov, int iovcnt)

ssize_t recv (int socket_fd, void *buffer, size_t length, int flags)

ssize_t recvfrom (int socket_fd, void *buffer, size_t length, int flags, struct sockaddr *sa, socklen_t *sa_len)

ssize_t recvmsg (int socket_fd, struct msghdr *message, int flags)

int rename (const char *oldpath, const char *newpath)

void rewinddir (DIR *dirp)

int rmdir (const char *path)

void seekdir (DIR *dirp, long loc)

int select (int nfds, fd_set *readset, fd_set *writeset, fd_set *errorset, struct timeval *timeout)

int sem_close (sem_t *sem)

int sem_destroy (sem_t *sem)

int sem_getvalue (sem_t *restrict sem, int *valuep)

int sem_init (sem_t *sem, int pshared, unsigned value)

sem_t * sem_open (const char *name, int flags)

int sem_post (sem_t *sem)

int sem_timedwait (sem_t *restrict sem, const struct timespec *time)

int sem_trywait (sem_t *sem)

int sem_unlink (const char *name)

int sem_wait (sem_t *sem)

int semctl (int semid, int semnum, int cmd, union semun arg)

int semget (key_t key, int nsems, int flags)

int semop (int semid, struct sembuf *sops, size_t nsops)

ssize_t send (int socket_fd, const void *data, size_t length, int flags)

ssize_t sendmsg (int socket_fd, const struct msghdr *message, int flags)

ssize_t sendto (int socket_fd, const void *message, size_t length, int flags, const struct sockaddr *sa, socklen_t sa_len)

int setegid (gid_t gid)

int setenv (const char *var, const char *val, int overwrite)

int seteuid (uid_t uid)

int setgid (gid_t gid)

void sethostent (int stayopen)

int setitimer (int which, const struct itimerval *val, struct itimerval *oval)

int setjmp (jmp_buf loc_info)

void setnetent (int stayopen)

int setpgid (pid_t pid, pid_t pgid)

void setprotoent (int stayopen)

int setrlimit (int resource, const struct rlimit *rlp)

void setservent (int stayopen)

pid_t setsid (void)

int setsockopt (int socket_fd, int level, int option, const void *value, socklen_t value_len)

int setuid (uid_t uid)

int shm_open (const char *name, int flags, mode_t perms)

int shm_unlink (const char *name)

void * shmat (int shmid, const void *shmaddr, int flags)

int shmctl (int shmid, int cmd, struct shmid_ds *data)

int shmdt (const void *shmaddr)

int shmget (key_t key, size_t size, int flags)

int shutdown (int socket_fd, int how)

int sigaction (int signum, const struct sigaction *act, struct sigaction *oact)

int sigaddset (sigset_t *set, int signum)

int sigaltstack (const stack_t *stack, stack_t *ostack)

int sigdelset (sigset_t *set, int signum)

int sigemptyset (sigset_t *set)

int sigfillset (sigset_t *set)

int sighold (int signum,)

int sigignore (int signum,)

int siginterrupt (int signum, int flag)

int sigismember (const sigset_t *set, int signum)

void siglongjmp (sigjmp_buf loc_info, int val)

int sigpause (int signum,)

int sigpending (sigset_t *set)

int sigprocmask (int how, const sigset_t *set, sigset_t *oset)

int sigqueue (pid_t pid, int signum, const union sigval value)

int sigrelse (int signum,)

int sigsetjmp (sigjmp_buf loc_info, int savemask)

int sigsuspend (const sigset_t *sigmask)

int sigtimedwait (const sigset_t *set, siginfo_t *info, const struct timespec *ts)

int sigwait (const sigset_t *set, int *signum)

int sigwaitinfo (const sigset_t *set, siginfo_t *info)

unsigned sleep (unsigned secs)

int sockatmark (int socket_fd,)

int socket (int domain, int type, int protocol)

int socketpair (int domain, int type, int protocol int socket_vector[2])

int stat (const char *path, struct stat *buf)

int statvfs (const char *path struct statvfs *buf)

size_t strftime (char *buf, size_t bufsize, const char *format, const struct tm *tmbuf)

char * strptime (const char *s, const char *format, struct tm *tmbuf)

int symlink (const char *oldpath, const char *newpath)

void sync (void)

long sysconf (int name)

int system (const char *command)

int tcdrain (int fd)

int tcflow (int fd, int action)

int tcflush (int fd, int queue)

int tcgetattr (int fd, struct termios *tp)

pid_t tcgetpgrp (int fd)

pid_t tcgetsid (int fd)

int tcsendbreak (int fd, int duration)

int tcsetattr (int fd, int actions, const struct termios *tp)

int tcsetpgrp (int fd, pid_t pgid)

long telldir (DIR *dirp)

time_t time (time_t *t)

int timer_create (clockid_t clockid, struct sigevent *sig, timer_t *timer_id)

int timer_delete (timer_t timer_id)

int timer_getoverrun (timer_t timer_id)

int timer_gettime (timer_t timer_id, struct itimerspec *val)

int timer_settime (timer_t timer_id, int flags, const struct itimerspec *val, struct itimerspec *oval)

clock_t times (struct tms *buffer)

int truncate (const char *path, off_t length)

char * ttyname (int fd)

int ttyname_r (int fd, char *buf, size_t bufsize)

void tzset (void)

long ulimit (int cmd,...)

mode_t umask (mode_t cmask)

int umount (const char *target)

int uname (struct utsname *name)

int unlink (const char *path)

int unlockpt (int fd)

int unsetenv (const char *var)

int usleep (useconds_t usecs)

int utime (const char *path, const struct utimbuf *timbuf)

pid_t vfork (void)

pid_t wait (int *statusp,)

int waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options)

pid_t waitpid (pid_t pid, int *statusp, int options)

size_t wcsftime (wchar_t *buf, size_t bufsize, const wchar_t *format, const struct tm *tmbuf)

ssize_t write (int fd, const void *buf, size_t nbytes)

ssize_t writev (int fd, const struct iovec *iov, int iovcnt)

Variables

void(*)(int) signal (int signum, void(*act)(int))

void(*)(int) sigset (int signum, void(*act)(int))

int daylight

long timezone

char * tzname [2]

Function Documentation

void _exit ( int status )

Description:
Terminate process without clean-up (Std. UNIX; see AUP2 Sec. 5.7)

Headers:
unistd.h

Returns:
Does not return

Parameters:

status exit status

Referenced by edinvoke(), execute3(), fcn(), fd_check(), handler(), invoke(), main(), redirect(), and sig_thread().

void _Exit ( int status )

Description:
Terminate process without clean-up (Std. UNIX; see AUP2 Sec. 5.7)

Headers:
stdlib.h

Returns:
Does not return

Parameters:

status exit status

void _longjmp ( jmp_buf loc_info,

int val

)

Description:
Jump to jump point without restoring signal mask (Std. UNIX; see AUP2 Sec. 9.6)

Headers:
setjmp.h

Parameters:

loc_info saved location information

val value for setjmp to return

int _setjmp ( jmp_buf loc_info )

Description:
Set jump point (Std. UNIX; see AUP2 Sec. 9.6)

Headers:
setjmp.h

Returns:
0 if called directly, non-zero if from longjmp (no error return)

Parameters:

loc_info saved location information

void abort ( void )

Description:
Generate SIGABRT (Std. UNIX; see AUP2 Sec. 9.1.9)

Headers:
stdlib.h

Returns:
Does not return

int accept ( int socket_fd,

struct sockaddr * sa,

socklen_t * sa_len

)

Description:
Accept new connection on socket and create new socket (Std. UNIX; see AUP2 Sec. 8.1.2)

Headers:
sys/socket.h

Returns:
file descriptor or -1 on error (sets errno)

Parameters:

socket_fd socket file descriptor

sa socket address or NULL

sa_len address length

Referenced by main(), run_server(), and ssi_wait_server().

int access ( const char * path,

int what

)

Description:
Determine accessibility of file (Std. UNIX; see AUP2 Sec. 3.8.1)
R_OK read permission
W_OK write permission
X_OK execute (search) permission
F_OK test for existence
Headers:
unistd.h

Returns:
0 if allowed or -1 if not or on error (sets errno)

Parameters:

path pathname

what permission to be tested

Referenced by access_test(), find_and_open_master(), and main().

int aio_cancel ( int fd,

struct aiocb * aiocbp

)

Description:
Cancel asynchronous I/O request (Std. UNIX; see AUP2 Sec. 3.9.5)

Headers:
aio.h

Returns:
result code or -1 on error (sets errno)

Parameters:

fd file descriptor

aiocbp control block

int aio_error ( const struct aiocb * aiocbp )

Description:
Retrieve error status for asynchronous I/O operation (Std. UNIX; see AUP2 Sec. 3.9.4)

Headers:
aio.h

Returns:
0, errno value, or EINPROGRESS (does not set errno)

Parameters:

aiocbp control block

Referenced by asynchronous(), and Ux::Aio::error().

int aio_fsync ( int op,

struct aiocb * aiocbp

)

Description:
Initiate buffer-cache flushing for one file (Std. UNIX; see AUP2 Sec. 3.9.6)

Headers:
aio.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

op O_SYNC or O_DSYNC

aiocbp control block

int aio_read ( struct aiocb * aiocbp )

Description:
Asynchronous read from file (Std. UNIX; see AUP2 Sec. 3.9.3)

Headers:
aio.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

aiocbp control block

Referenced by asynchronous().

ssize_t aio_return ( struct aiocb * aiocbp )

Description:
Retrieve return status of asynchronous I/O operation (Std. UNIX; see AUP2 Sec. 3.9.4)

Headers:
aio.h

Returns:
operation return value or -1 on error (sets errno)

Parameters:

aiocbp control block

int aio_suspend ( const struct aiocb *const list[],

int cbcnt,

const struct timespec * timeout

)

Description:
Wait for asynchronous I/O request (Std. UNIX; see AUP2 Sec. 3.9.7)

Headers:
aio.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

list array of control blocks

cbcnt number of elements in array

timeout max time to wait

Referenced by asynchronous().

int aio_write ( struct aiocb * aiocbp )

Description:
Asynchronous write to file (Std. UNIX; see AUP2 Sec. 3.9.3)

Headers:
aio.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

aiocbp control block

unsigned alarm ( unsigned secs )

Description:
Schedule an alarm signal (Std. UNIX; see AUP2 Sec. 9.7.1)

Headers:
unistd.h

Returns:
seconds left on previous alarm or zero if none (no error return)

Parameters:

secs seconds until signal

Referenced by Ux::Timer::alarm(), aup_sleep(), main(), posixsem_test(), and sysvsem_test().

char* asctime ( const struct tm * tmbuf )

Description:
Convert broken-down time to local-time string (Std. UNIX; see AUP2 Sec. 1.7.1)

Headers:
time.h

Returns:
string or NULL on error (errno not set)

Parameters:

tmbuf broken-down time

int atexit ( void(* fcn)(void) )

Description:
Register function to be called when process exits (Std. UNIX; see AUP2 Sec. 1.3.4)

Headers:
stdlib.h

Returns:
0 on success, non-zero on error (errno not set)

Parameters:

fcn function to be called

Referenced by ec_push(), and process_test().

int bind ( int socket_fd,

const struct sockaddr * sa,

socklen_t sa_len

)

Description:
Bind name to socket (Std. UNIX; see AUP2 Sec. 8.1.2)

Headers:
sys/socket.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

socket_fd socket file descriptor

sa socket address

sa_len address length

Referenced by main(), run_client(), run_server(), and ssi_open().

speed_t cfgetispeed ( const struct termios * tp )

Description:
Get input speed from termios structure (Std. UNIX; see AUP2 Sec. 4.5.3)

Headers:
termios.h

Returns:
speed (no error return)

Parameters:

tp attributes

Referenced by Ux::Termios::cfgetispeed().

speed_t cfgetospeed ( const struct termios * tp )

Description:
Get output speed from termios structure (Std. UNIX; see AUP2 Sec. 4.5.3)

Headers:
termios.h

Returns:
speed (no error return)

Parameters:

tp attributes

Referenced by Ux::Termios::cfgetospeed().

int cfsetispeed ( struct termios * tp,

speed_t speed

)

Description:
Set input speed in termios structure (Std. UNIX; see AUP2 Sec. 4.5.3)

Headers:
termios.h

Returns:
0 on success or -1 on error (may set errno)

Parameters:

tp attributes

speed speed

int cfsetospeed ( struct termios * tp,

speed_t speed

)

Description:
Set output speed in termios structure (Std. UNIX; see AUP2 Sec. 4.5.3)

Headers:
termios.h

Returns:
0 on success or -1 on error (may set errno)

Parameters:

tp attributes

speed speed

int chdir ( const char * path )

Description:
Change current directory by path (Std. UNIX; see AUP2 Sec. 3.6.2)

Headers:
unistd.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

path pathname

Referenced by builtin(), do_dir(), getcwdx(), main(), and process_test().

int chmod ( const char * path,

mode_t mode

)

Description:
Change mode of file by path (Std. UNIX; see AUP2 Sec. 3.7.1)

Headers:
sys/stat.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

path pathname

mode new mode

int chown ( const char * path,

uid_t uid,

gid_t gid

)

Description:
Change owner and group of file by path (Std. UNIX; see AUP2 Sec. 3.7.2)

Headers:
unistd.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

path pathname

uid new user ID

gid new group ID

int chroot ( const char * path )

Description:
Change root directory (Std. UNIX; see AUP2 Sec. 5.14)

Headers:
unistd.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

path path name

Referenced by process_test().

clock_t clock ( void )

Description:
Get execution time (Std. UNIX; see AUP2 Sec. 1.7.2)

Headers:
time.h

Returns:
time in CLOCKS_PER_SEC or -1 on error (errno not set)

Referenced by Ux::RealtimeTimer::create(), getaddr(), Ux::Clock::getcpuclockid(), and main().

int clock_getcpuclockid ( pid_t pid,

clockid_t * clock_id

)

Description:
Get process CPU-time clock (Std. UNIX; see AUP2 Sec. 9.7.5)

Headers:
time.h

Returns:
0 on success or error number on error

Parameters:

pid process ID

clock_id returned clock ID

int clock_getres ( clockid_t clock_id,

struct timespec * res

)

Description:
Get clock resolution (Std. UNIX; see AUP2 Sec. 9.7.5)

Headers:
time.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

clock_id clock ID

res resolution

int clock_gettime ( clockid_t clock_id,

struct timespec * tp

)

Description:
Get time from clock (Std. UNIX; see AUP2 Sec. 9.7.5)

Headers:
time.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

clock_id clock ID (CLOCK_REALTIME, etc.)

tp time

int clock_nanosleep ( clockid_t clock_id,

int flags,

const struct timespec * nsecs,

struct timespec * remain

)

Description:
Suspend execution for nanoseconds or until signal (Std. UNIX; see AUP2 Sec. 9.7.5)

Headers:
time.h

Returns:
0 on success or error number on error

Parameters:

clock_id clock ID

flags TIMER_ABSTIME or zero

nsecs nanoseconds to sleep

remain remaining time

int clock_settime ( clockid_t clock_id,

const struct timespec * tp

)

Description:
Set clock (Std. UNIX; see AUP2 Sec. 9.7.5)

Headers:
time.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

clock_id clock ID

tp time

int close ( int fd )

Description:
Close file descriptor (Std. UNIX; see AUP2 Sec. 2.11)

Headers:
unistd.h

Returns:
0 on success or -1 on error (sets errno)

Parameters:

fd file descriptor

Referenced by backward(), backward0(), backward2(), Bclose(), clients_close_all(), copy(), copy2(), copy2a(), do_dir(), edinvoke(), ev_close(), exec_redirected(), fcn(), fcntl_example(), file_ctime_test(), find_and_open_master(), fsort(), fsort0(), ftruncate_test(), getaddr(), getcwdx(), invoke(), junk(), lock(), main(), main1(), pcsync_end(), pipewrite(), pipewrite2(), pipewrite2bug(), process1(), process2(), pt_close_master(), pt_close_slave(), pt_open_master(), pt_open_slave(), pwrite_test(), readany_test(), readany_test2(), readany_test3(), redirect(), rmdir_test(), run_client(),


Compounds
struct	addrinfo
struct	aiocb
struct	dirent
struct	flock
struct	group
struct	hostent
struct	if_nameindex
struct	iovec
struct	ipc_perm
struct	itimerspec
struct	itimerval
struct	mq_attr
struct	msg
struct	msghdr
struct	msqid_ds
struct	netent
struct	passwd
struct	pollfd
struct	protoent
struct	rlimit
struct	rusage
struct	sembuf
struct	semid_ds
union	semun
struct	servent
struct	sigaction
struct	sigevent
struct	siginfo_t
union	sigval
struct	SimpleSem
struct	sockaddr_in
struct	sockaddr_in6
struct	sockaddr_un
struct	stat
struct	statvfs
struct	termios
struct	timespec
struct	timeval
struct	tm
struct	tms
struct	utimbuf
Functions
void	FD_CLR (int fd, fd_set *fdset)
int	FD_ISSET (int fd, fd_set *fdset)
void	FD_SET (int fd, fd_set *fdset)
void	FD_ZERO (fd_set *fdset)
void	_Exit (int status)
void	_exit (int status)
void	_longjmp (jmp_buf loc_info, int val)
int	_setjmp (jmp_buf loc_info)
void	abort (void)
int	accept (int socket_fd, struct sockaddr sa, socklen_t sa_len)
int	access (const char *path, int what)
int	aio_cancel (int fd, struct aiocb *aiocbp)
int	aio_error (const struct aiocb *aiocbp)
int	aio_fsync (int op, struct aiocb *aiocbp)
int	aio_read (struct aiocb *aiocbp)
ssize_t	aio_return (struct aiocb *aiocbp)
int	aio_suspend (const struct aiocb const list[], int cbcnt, const struct timespec timeout)
int	aio_write (struct aiocb *aiocbp)
unsigned	alarm (unsigned secs)
char *	asctime (const struct tm *tmbuf)
int	atexit (void(*fcn)(void))
int	bind (int socket_fd, const struct sockaddr *sa, socklen_t sa_len)
speed_t	cfgetispeed (const struct termios *tp)
speed_t	cfgetospeed (const struct termios *tp)
int	cfsetispeed (struct termios *tp, speed_t speed)
int	cfsetospeed (struct termios *tp, speed_t speed)
int	chdir (const char *path)
int	chmod (const char *path, mode_t mode)
int	chown (const char *path, uid_t uid, gid_t gid)
int	chroot (const char *path)
clock_t	clock (void)
int	clock_getcpuclockid (pid_t pid, clockid_t *clock_id)
int	clock_getres (clockid_t clock_id, struct timespec *res)
int	clock_gettime (clockid_t clock_id, struct timespec *tp)
int	clock_nanosleep (clockid_t clock_id, int flags, const struct timespec nsecs, struct timespec remain)
int	clock_settime (clockid_t clock_id, const struct timespec *tp)
int	close (int fd)
int	closedir (DIR *dirp)
size_t	confstr (int name, char *buf, size_t len)
int	connect (int socket_fd, const struct sockaddr *sa, socklen_t sa_len)
int	creat (const char *path, mode_t perms)
char *	ctermid (char *buf)
char *	ctime (const time_t *t)
double	difftime (time_t time1, time_t time0)
int	dup (int fd)
int	dup2 (int fd, int fd2)
void	endhostent (void)
void	endnetent (void)
void	endprotoent (void)
void	endservent (void)
int	execl (const char path, const char arg0, const char arg1,..., (char )NULL)
int	execle (const char path, const char arg0, const char arg1,..., (char )NULL, char *const envv[])
int	execlp (const char file, const char arg0, const char arg1,..., (char )NULL)
int	execv (const char path, char const argv[])
int	execve (const char path, char const argv[], char *const envv[])
int	execvp (const char file, char const argv[])
void	exit (int status)
int	fchdir (int fd)
int	fchmod (int fd, mode_t mode)
int	fchown (int fd, uid_t uid, gid_t gid)
int	fcntl (int fd, int op,...)
int	fdatasync (int fd)
pid_t	fork (void)
long	fpathconf (int fd, int name)
void	freeaddrinfo (struct addrinfo *infop)
int	fstat (int fd, struct stat *buf)
int	fstatvfs (int fd, struct statvfs *buf)
int	fsync (int fd)
key_t	ftok (const char *path, int id)
int	ftruncate (int fd, off_t length)
const char *	gai_strerror (int code)
int	getaddrinfo (const char nodename, const char servname, const struct addrinfo hint, struct addrinfo *infop)
char *	getcwd (char *buf, size_t bufsize)
tm *	getdate (const char *s)
gid_t	getegid (void)
char *	getenv (const char *var)
uid_t	geteuid (void)
gid_t	getgid (void)
group *	getgrgid (gid_t gid)
hostent *	gethostbyaddr (const void *addr, socklen_t len, int family)
hostent *	gethostbyname (const char *nodename,)
hostent *	gethostent (void)
long	gethostid (void)
int	gethostname (char *name, size_t namelen)
int	getitimer (int which, struct itimerval *val)
char *	getlogin (void)
int	getnameinfo (const struct sockaddr sa, socklen_t sa_len, char nodename, socklen_t nodelen, char *servname, socklen_t servlen, unsigned flags)
netent *	getnetbyaddr (uint32_t net, int type)
netent *	getnetbyname (const char *name)
netent *	getnetent (void)
int	getpeername (int socket_fd, struct sockaddr sa, socklen_t sa_len)
pid_t	getpgid (pid_t pid)
pid_t	getpid (void)
pid_t	getppid (void)
protoent *	getprotobyname (const char *name)
protoent *	getprotobynumber (int proto)
protoent *	getprotoent (void)
passwd *	getpwuid (uid_t uid)
int	getrlimit (int resource, struct rlimit *rlp)
int	getrusage (int who, struct rusage *r_usage)
servent *	getservbyname (const char name, const char proto)
servent *	getservbyport (int port, const char *proto)
servent *	getservent (void)
pid_t	getsid (pid_t pid)
int	getsockname (int socket_fd, struct sockaddr sa, socklen_t sa_len)
int	getsockopt (int socket, int level, int option, const void value, socklen_t value_len)
int	gettimeofday (struct timeval tvalbuf, void dummy)
uid_t	getuid (void)
tm *	gmtime (const time_t *t)
int	grantpt (int fd)
uint32_t	htonl (uint32_t hostnum)
uint16_t	htons (uint16_t hostnum)
void	if_freenameindex (struct if_nameindex *ptr)
char *	if_indextoname (unsigned ifindex, char *ifname)
if_nameindex *	if_nameindex (void)
unsigned	if_nametoindex (const char *ifname)
in_addr_t	inet_addr (const char *cp)
char *	inet_ntoa (struct in_addr in)
const char *	inet_ntop (int domain, const void src, char dst, socklen_t dst_len)
int	inet_pton (int domain, const char src, void dst)
int	ioctl (int fd, int req,...)
int	isatty (int fd)
int	kill (pid_t pid, int signum)
int	killpg (pid_t pgrp, int signum)
int	lchown (const char *path, uid_t uid, gid_t gid)
int	link (const char oldpath, const char newpath)
int	lio_listio (int mode, struct aiocb const list[], int cbcnt, struct sigevent sig)
int	listen (int socket_fd, int backlog)
tm *	localtime (const time_t *t)
int	lockf (int fd, int op, off_t len)
void	longjmp (jmp_buf loc_info, int val)
off_t	lseek (int fd, off_t pos, int whence)
int	lstat (const char path, struct stat buf)
int	mkdir (const char *path, mode_t perms)
int	mkfifo (const char *path, mode_t perms)
int	mknod (const char *path, mode_t perms, dev_t dev)
int	mkstemp (char *template)
time_t	mktime (struct tm *tmbuf)
void *	mmap (void *addr, size_t len, int prot, int flags, int fd, off_t off)
int	mount (const char source, const char target, const char type, unsigned long flags, const void data)
int	mq_close (mqd_t mqd)
int	mq_getattr (mqd_t mqd, struct mq_attr *attr)
int	mq_notify (mqd_t mqd, const struct sigevent *ep)
mqd_t	mq_open (const char *name, int flags)
ssize_t	mq_receive (mqd_t mqd, char msg, size_t msgsize, unsigned priorityp)
int	mq_send (mqd_t mqd, const char *msg, size_t msgsize, unsigned priority)
int	mq_setattr (mqd_t mqd, const struct mq_attr attr, struct mq_attr oldattr)
ssize_t	mq_timedreceive (mqd_t mqd, char msg, size_t msgsize, unsigned priorityp const struct timespec *tmout)
int	mq_timedsend (mqd_t mqd, const char msg, size_t msgsize, unsigned priority const struct timespec tmout)
int	mq_unlink (const char *name)
int	msgctl (int msqid, int cmd, struct msqid_ds *data)
int	msgget (key_t key, int flags)
ssize_t	msgrcv (int msqid, const void *msgp, size_t mtextsize, long msgtype, int flags)
int	msgsnd (int msqid, const void *msgp, size_t msgsize, int flags)
int	munmap (void *addr, size_t len)
int	nanosleep (const struct timespec nsecs, struct timespec remain)
int	nice (int incr)
uint32_t	ntohl (uint32_t netnum)
uint16_t	ntohs (uint16_t netnum)
int	open (const char *path, int flags, mode_t perms)
DIR *	opendir (const char *path)
long	pathconf (const char *path, int name)
int	pause (void)
int	pipe (int pfd[2])
int	poll (struct pollfd fdinfo[], nfds_t nfds, int timeout)
int	posix_openpt (int oflag)
ssize_t	pread (int fd, void *buf, size_t nbytes off_t offset)
int	pselect (int nfds, fd_set readset, fd_set writeset, fd_set errorset, const struct timespec timeout, const sigset_t *sigmask)
int	pthread_cancel (pthread_t thread_id)
void	pthread_cleanup_pop (int execute)
void	pthread_cleanup_push (void(handler)(void ), void *arg)
int	pthread_cond_signal (pthread_cond_t *cond)
int	pthread_cond_wait (pthread_cond_t cond, pthread_mutex_t mutex)
int	pthread_create (pthread_t thread_id, const pthread_attr_t attr, void (start_fcn)(void ), void arg)
int	pthread_join (pthread_t thread_id, void **status_ptr)
int	pthread_kill (pthread_t thread_id, int signum)
int	pthread_mutex_lock (pthread_mutex_t *mutex)
int	pthread_mutex_unlock (pthread_mutex_t *mutex)
int	pthread_sigmask (int how, const sigset_t set, sigset_t oset)
void	pthread_testcancel (void)
char *	ptsname (int fd)
int	putenv (char *string)
ssize_t	pwrite (int fd, const void *buf, size_t nbytes off_t offset)
int	raise (int signum)
ssize_t	read (int fd, void *buf, size_t nbytes)
dirent *	readdir (DIR *dirp)
int	readdir_r (DIR restrict dirp, struct dirent entry, struct dirent **result)
ssize_t	readlink (const char path, char buf, size_t bufsize)
ssize_t	readv (int fd, const struct iovec *iov, int iovcnt)
ssize_t	recv (int socket_fd, void *buffer, size_t length, int flags)
ssize_t	recvfrom (int socket_fd, void buffer, size_t length, int flags, struct sockaddr sa, socklen_t *sa_len)
ssize_t	recvmsg (int socket_fd, struct msghdr *message, int flags)
int	rename (const char oldpath, const char newpath)
void	rewinddir (DIR *dirp)
int	rmdir (const char *path)
void	seekdir (DIR *dirp, long loc)
int	select (int nfds, fd_set readset, fd_set writeset, fd_set errorset, struct timeval timeout)
int	sem_close (sem_t *sem)
int	sem_destroy (sem_t *sem)
int	sem_getvalue (sem_t restrict sem, int valuep)
int	sem_init (sem_t *sem, int pshared, unsigned value)
sem_t *	sem_open (const char *name, int flags)
int	sem_post (sem_t *sem)
int	sem_timedwait (sem_t restrict sem, const struct timespec time)
int	sem_trywait (sem_t *sem)
int	sem_unlink (const char *name)
int	sem_wait (sem_t *sem)
int	semctl (int semid, int semnum, int cmd, union semun arg)
int	semget (key_t key, int nsems, int flags)
int	semop (int semid, struct sembuf *sops, size_t nsops)
ssize_t	send (int socket_fd, const void *data, size_t length, int flags)
ssize_t	sendmsg (int socket_fd, const struct msghdr *message, int flags)
ssize_t	sendto (int socket_fd, const void message, size_t length, int flags, const struct sockaddr sa, socklen_t sa_len)
int	setegid (gid_t gid)
int	setenv (const char var, const char val, int overwrite)
int	seteuid (uid_t uid)
int	setgid (gid_t gid)
void	sethostent (int stayopen)
int	setitimer (int which, const struct itimerval val, struct itimerval oval)
int	setjmp (jmp_buf loc_info)
void	setnetent (int stayopen)
int	setpgid (pid_t pid, pid_t pgid)
void	setprotoent (int stayopen)
int	setrlimit (int resource, const struct rlimit *rlp)
void	setservent (int stayopen)
pid_t	setsid (void)
int	setsockopt (int socket_fd, int level, int option, const void *value, socklen_t value_len)
int	setuid (uid_t uid)
int	shm_open (const char *name, int flags, mode_t perms)
int	shm_unlink (const char *name)
void *	shmat (int shmid, const void *shmaddr, int flags)
int	shmctl (int shmid, int cmd, struct shmid_ds *data)
int	shmdt (const void *shmaddr)
int	shmget (key_t key, size_t size, int flags)
int	shutdown (int socket_fd, int how)
int	sigaction (int signum, const struct sigaction act, struct sigaction oact)
int	sigaddset (sigset_t *set, int signum)
int	sigaltstack (const stack_t stack, stack_t ostack)
int	sigdelset (sigset_t *set, int signum)
int	sigemptyset (sigset_t *set)
int	sigfillset (sigset_t *set)
int	sighold (int signum,)
int	sigignore (int signum,)
int	siginterrupt (int signum, int flag)
int	sigismember (const sigset_t *set, int signum)
void	siglongjmp (sigjmp_buf loc_info, int val)
int	sigpause (int signum,)
int	sigpending (sigset_t *set)
int	sigprocmask (int how, const sigset_t set, sigset_t oset)
int	sigqueue (pid_t pid, int signum, const union sigval value)
int	sigrelse (int signum,)
int	sigsetjmp (sigjmp_buf loc_info, int savemask)
int	sigsuspend (const sigset_t *sigmask)
int	sigtimedwait (const sigset_t set, siginfo_t info, const struct timespec *ts)
int	sigwait (const sigset_t set, int signum)
int	sigwaitinfo (const sigset_t set, siginfo_t info)
unsigned	sleep (unsigned secs)
int	sockatmark (int socket_fd,)
int	socket (int domain, int type, int protocol)
int	socketpair (int domain, int type, int protocol int socket_vector[2])
int	stat (const char path, struct stat buf)
int	statvfs (const char path struct statvfs buf)
size_t	strftime (char buf, size_t bufsize, const char format, const struct tm *tmbuf)
char *	strptime (const char s, const char format, struct tm *tmbuf)
int	symlink (const char oldpath, const char newpath)
void	sync (void)
long	sysconf (int name)
int	system (const char *command)
int	tcdrain (int fd)
int	tcflow (int fd, int action)
int	tcflush (int fd, int queue)
int	tcgetattr (int fd, struct termios *tp)
pid_t	tcgetpgrp (int fd)
pid_t	tcgetsid (int fd)
int	tcsendbreak (int fd, int duration)
int	tcsetattr (int fd, int actions, const struct termios *tp)
int	tcsetpgrp (int fd, pid_t pgid)
long	telldir (DIR *dirp)
time_t	time (time_t *t)
int	timer_create (clockid_t clockid, struct sigevent sig, timer_t timer_id)
int	timer_delete (timer_t timer_id)
int	timer_getoverrun (timer_t timer_id)
int	timer_gettime (timer_t timer_id, struct itimerspec *val)
int	timer_settime (timer_t timer_id, int flags, const struct itimerspec val, struct itimerspec oval)
clock_t	times (struct tms *buffer)
int	truncate (const char *path, off_t length)
char *	ttyname (int fd)
int	ttyname_r (int fd, char *buf, size_t bufsize)
void	tzset (void)
long	ulimit (int cmd,...)
mode_t	umask (mode_t cmask)
int	umount (const char *target)
int	uname (struct utsname *name)
int	unlink (const char *path)
int	unlockpt (int fd)
int	unsetenv (const char *var)
int	usleep (useconds_t usecs)
int	utime (const char path, const struct utimbuf timbuf)
pid_t	vfork (void)
pid_t	wait (int *statusp,)
int	waitid (idtype_t idtype, id_t id, siginfo_t *infop, int options)
pid_t	waitpid (pid_t pid, int *statusp, int options)
size_t	wcsftime (wchar_t buf, size_t bufsize, const wchar_t format, const struct tm *tmbuf)
ssize_t	write (int fd, const void *buf, size_t nbytes)
ssize_t	writev (int fd, const struct iovec *iov, int iovcnt)
Variables
void(*)(int)	signal (int signum, void(*act)(int))
void(*)(int)	sigset (int signum, void(*act)(int))
int	daylight
long	timezone
char *	tzname [2]