Advanced Programming in the UNIX® Environment

ptg10805159

866 Function Prototypes Appendix A

int openat(intfd,const char *path,intoflag,...

/* mode_tmode*/ );

<fcntl.h> p. 62

oflag:O_RDONLY, O_WRONLY, O_RDWR, O_EXEC,

O_SEARCH;

O_APPEND, O_CLOEXEC, O_CREAT,

O_DIRECTORY, O_DSYNC, O_EXCL,

O_NOCTTY, O_NOFOLLOW, O_NONBLOCK,

O_RSYNC, O_SYNC, O_TRUNC, O_TTY_INIT

mode:S_IS[UG]ID, S_ISVTX,

S_I[RWX](USR|GRP|OTH)

Returns: file descriptor if OK,−1 on error

Platforms:O_FSYNCflag on FreeBSD 8.0 and Mac OS X 10.6.8

DIR *opendir(const char *path);

<dirent.h> p. 130

Returns: pointer if OK,NULLon error

void openlog(const char *ident,intoption,intfacility);

<syslog.h> p. 470

option:LOG_CONS, LOG_NDELAY, LOG_NOWAIT,

LOG_ODELAY, LOG_PERROR, LOG_PID

facility:LOG_AUTH, LOG_AUTHPRIV, LOG_CRON,

LOG_DAEMON, LOG_FTP, LOG_KERN,

LOG_LOCAL[0-7], LOG_LPR, LOG_MAIL,

LOG_NEWS, LOG_SYSLOG, LOG_USER, LOG_UUCP

FILE *open_memstream(char **bufp,size_t *sizep);

<stdio.h> p. 173

Returns: stream pointer if OK,NULLon error

FILE *open_wmemstream(wchar_t **bufp,size_t *sizep);

<wchar.h> p. 173

Returns: stream pointer if OK,NULLon error

long pathconf(const char *path,intname);

<unistd.h> p. 42

name:_PC_ASYNC_IO, _PC_CHOWN_RESTRICTED,

_PC_FILESIZEBITS, _PC_LINK_MAX,

_PC_MAX_CANON, _PC_MAX_INPUT,

_PC_NAME_MAX, _PC_NO_TRUNC, _PC_PATH_MAX,

_PC_PIPE_BUF, _PC_PRIO_IO, _PC_SYMLINK_MAX,

_PC_SYNC_IO, _PC_TIMESTAMP_RESOLUTION,

_PC_2_SYMLINKS, _PC_VDISABLE

Returns: corresponding value if OK,−1 on error

int pause(void);

<unistd.h> p. 338

Returns:−1witherrnoset toEINTR