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POSIX - Perl interface to IEEE Std 1003.1SYNOPSIS
use POSIX; use POSIX qw(setsid); use POSIX qw(:errno_h :fcntl_h); printf "EINTR is %d\n", EINTR; $sess_id = POSIX::setsid(); $fd = POSIX::open($path, O_CREAT|O_EXCL|O_WRONLY, 0644); # note: that's a filedescriptor, *NOT* a filehandleDESCRIPTION
The POSIX module permits you to access all (or nearly all) the standard POSIX 1003.1 identifiers. Many of these identifiers have been given Perl-ish interfaces. Things which are `#defines' in C, like EINTR or O_NDELAY, are automatically exported into your namespace. All functions are only exported if you ask for them explicitly. Most likely people will prefer to use the fully-qualified function names. This document gives a condensed list of the features available in the POSIX module. Consult your operating system's manpages for general information on most features. Consult the perlfunc manpage for functions which are noted as being identical to Perl's builtin functions. The first section describes POSIX functions from the 1003.1 specification. The second section describes some classes for signal objects, TTY objects, and other miscellaneous objects. The remaining sections list various constants and macros in an organization which roughly follows IEEE Std 1003.1b-1993.NOTE
The POSIX module is probably the most complex Perl module supplied with the standard distribution. It incorporates autoloading, namespace games, and dynamic loading of code that's in Perl, C, or both. It's a great source of wisdom.CAVEATS
A few functions are not implemented because they are C specific. If you attempt to call these, they will print a message telling you that they aren't implemented, and suggest using the Perl equivalent should one exist. For example, trying to access the setjmp() call will elicit the message "setjmp() is C-specific: use eval {} instead". Furthermore, some evil vendors will claim 1003.1 compliance, but in fact are not so: they will not pass the PCTS (POSIX Compliance Test Suites). For example, one vendor may not define EDEADLK, or the semantics of the errno values set by open(2) might not be quite right. Perl does not attempt to verify POSIX compliance. That means you can currently successfully say "use POSIX", and then later in your program you find that your vendor has been lax and there's no usable ICANON macro after all. This could be construed to be a bug.FUNCTIONS
_exit This is identical to the C function `_exit()'. abort This is identical to the C function `abort()'. abs This is identical to Perl's builtin `abs()' function. access Determines the accessibility of a file. if( POSIX::access( "/", &POSIX::R_OK ) ){ print "have read permission\n"; } Returns `undef' on failure. acos This is identical to the C function `acos()'. alarm This is identical to Perl's builtin `alarm()' function. asctime This is identical to the C function `asctime()'. asin This is identical to the C function `asin()'. assert Unimplemented. atan This is identical to the C function `atan()'. atan2 This is identical to Perl's builtin `atan2()' function. atexit atexit() is C-specific: use END {} instead. atof atof() is C-specific. atoi atoi() is C-specific. atol atol() is C-specific. bsearch bsearch() not supplied. calloc calloc() is C-specific. ceil This is identical to the C function `ceil()'. chdir This is identical to Perl's builtin `chdir()' function. chmod This is identical to Perl's builtin `chmod()' function. chown This is identical to Perl's builtin `chown()' function. clearerr Use method `IO::Handle::clearerr()' instead. clock This is identical to the C function `clock()'. close Close the file. This uses file descriptors such as those obtained by calling `POSIX::open'. $fd = POSIX::open( "foo", &POSIX::O_RDONLY ); POSIX::close( $fd ); Returns `undef' on failure. closedir This is identical to Perl's builtin `closedir()' function. cos This is identical to Perl's builtin `cos()' function. cosh This is identical to the C function `cosh()'. creat Create a new file. This returns a file descriptor like the ones returned by `POSIX::open'. Use `POSIX::close' to close the file. $fd = POSIX::creat( "foo", 0611 ); POSIX::close( $fd ); ctermid Generates the path name for the controlling terminal. $path = POSIX::ctermid(); ctime This is identical to the C function `ctime()'. cuserid Get the character login name of the user. $name = POSIX::cuserid(); difftime This is identical to the C function `difftime()'. div div() is C-specific. dup This is similar to the C function `dup()'. This uses file descriptors such as those obtained by calling `POSIX::open'. Returns `undef' on failure. dup2 This is similar to the C function `dup2()'. This uses file descriptors such as those obtained by calling `POSIX::open'. Returns `undef' on failure. errno Returns the value of errno. $errno = POSIX::errno(); execl execl() is C-specific. execle execle() is C-specific. execlp execlp() is C-specific. execv execv() is C-specific. execve execve() is C-specific. execvp execvp() is C-specific. exit This is identical to Perl's builtin `exit()' function. exp This is identical to Perl's builtin `exp()' function. fabs This is identical to Perl's builtin `abs()' function. fclose Use method `IO::Handle::close()' instead. fcntl This is identical to Perl's builtin `fcntl()' function. fdopen Use method `IO::Handle::new_from_fd()' instead. feof Use method `IO::Handle::eof()' instead. ferror Use method `IO::Handle::error()' instead. fflush Use method `IO::Handle::flush()' instead. fgetc Use method `IO::Handle::getc()' instead. fgetpos Use method `IO::Seekable::getpos()' instead. fgets Use method `IO::Handle::gets()' instead. fileno Use method `IO::Handle::fileno()' instead. floor This is identical to the C function `floor()'. fmod This is identical to the C function `fmod()'. fopen Use method `IO::File::open()' instead. fork This is identical to Perl's builtin `fork()' function. fpathconf Retrieves the value of a configurable limit on a file or directory. This uses file descriptors such as those obtained by calling `POSIX::open'. The following will determine the maximum length of the longest allowable pathname on the filesystem which holds `/tmp/foo'. $fd = POSIX::open( "/tmp/foo", &POSIX::O_RDONLY ); $path_max = POSIX::fpathconf( $fd, &POSIX::_PC_PATH_MAX ); Returns `undef' on failure. fprintf fprintf() is C-specific--use printf instead. fputc fputc() is C-specific--use print instead. fputs fputs() is C-specific--use print instead. fread fread() is C-specific--use read instead. free free() is C-specific. freopen freopen() is C-specific--use open instead. frexp Return the mantissa and exponent of a floating-point number. ($mantissa, $exponent) = POSIX::frexp( 3.14 ); fscanf fscanf() is C-specific--use <> and regular expressions instead. fseek Use method `IO::Seekable::seek()' instead. fsetpos Use method `IO::Seekable::setpos()' instead. fstat Get file status. This uses file descriptors such as those obtained by calling `POSIX::open'. The data returned is identical to the data from Perl's builtin `stat' function. $fd = POSIX::open( "foo", &POSIX::O_RDONLY ); @stats = POSIX::fstat( $fd ); ftell Use method `IO::Seekable::tell()' instead. fwrite fwrite() is C-specific--use print instead. getc This is identical to Perl's builtin `getc()' function. getchar Returns one character from STDIN. getcwd Returns the name of the current working directory. getegid Returns the effective group id. getenv Returns the value of the specified enironment variable. geteuid Returns the effective user id. getgid Returns the user's real group id. getgrgid This is identical to Perl's builtin `getgrgid()' function. getgrnam This is identical to Perl's builtin `getgrnam()' function. getgroups Returns the ids of the user's supplementary groups. getlogin This is identical to Perl's builtin `getlogin()' function. getpgrp This is identical to Perl's builtin `getpgrp()' function. getpid Returns the process's id. getppid This is identical to Perl's builtin `getppid()' function. getpwnam This is identical to Perl's builtin `getpwnam()' function. getpwuid This is identical to Perl's builtin `getpwuid()' function. gets Returns one line from STDIN. getuid Returns the user's id. gmtime This is identical to Perl's builtin `gmtime()' function. isalnum This is identical to the C function, except that it can apply to a single character or to a whole string. isalpha This is identical to the C function, except that it can apply to a single character or to a whole string. isatty Returns a boolean indicating whether the specified filehandle is connected to a tty. iscntrl This is identical to the C function, except that it can apply to a single character or to a whole string. isdigit This is identical to the C function, except that it can apply to a single character or to a whole string. isgraph This is identical to the C function, except that it can apply to a single character or to a whole string. islower This is identical to the C function, except that it can apply to a single character or to a whole string. isprint This is identical to the C function, except that it can apply to a single character or to a whole string. ispunct This is identical to the C function, except that it can apply to a single character or to a whole string. isspace This is identical to the C function, except that it can apply to a single character or to a whole string. isupper This is identical to the C function, except that it can apply to a single character or to a whole string. isxdigit This is identical to the C function, except that it can apply to a single character or to a whole string. kill This is identical to Perl's builtin `kill()' function. labs labs() is C-specific, use abs instead. ldexp This is identical to the C function `ldexp()'. ldiv ldiv() is C-specific, use / and int instead. link This is identical to Perl's builtin `link()' function. localeconv Get numeric formatting information. Returns a reference to a hash containing the current locale formatting values. The database for the de (Deutsch or German) locale. $loc = POSIX::setlocale( &POSIX::LC_ALL, "de" ); print "Locale = $loc\n"; $lconv = POSIX::localeconv(); print "decimal_point = ", $lconv->{decimal_point}, "\n"; print "thousands_sep = ", $lconv->{thousands_sep}, "\n"; print "grouping = ", $lconv->{grouping}, "\n"; print "int_curr_symbol = ", $lconv->{int_curr_symbol}, "\n"; print "currency_symbol = ", $lconv->{currency_symbol}, "\n"; print "mon_decimal_point = ", $lconv->{mon_decimal_point}, "\n"; print "mon_thousands_sep = ", $lconv->{mon_thousands_sep}, "\n"; print "mon_grouping = ", $lconv->{mon_grouping}, "\n"; print "positive_sign = ", $lconv->{positive_sign}, "\n"; print "negative_sign = ", $lconv->{negative_sign}, "\n"; print "int_frac_digits = ", $lconv->{int_frac_digits}, "\n"; print "frac_digits = ", $lconv->{frac_digits}, "\n"; print "p_cs_precedes = ", $lconv->{p_cs_precedes}, "\n"; print "p_sep_by_space = ", $lconv->{p_sep_by_space}, "\n"; print "n_cs_precedes = ", $lconv->{n_cs_precedes}, "\n"; print "n_sep_by_space = ", $lconv->{n_sep_by_space}, "\n"; print "p_sign_posn = ", $lconv->{p_sign_posn}, "\n"; print "n_sign_posn = ", $lconv->{n_sign_posn}, "\n"; localtime This is identical to Perl's builtin `localtime()' function. log This is identical to Perl's builtin `log()' function. log10 This is identical to the C function `log10()'. longjmp longjmp() is C-specific: use die instead. lseek Move the file's read/write position. This uses file descriptors such as those obtained by calling `POSIX::open'. $fd = POSIX::open( "foo", &POSIX::O_RDONLY ); $off_t = POSIX::lseek( $fd, 0, &POSIX::SEEK_SET ); Returns `undef' on failure. malloc malloc() is C-specific. mblen This is identical to the C function `mblen()'. mbstowcs This is identical to the C function `mbstowcs()'. mbtowc This is identical to the C function `mbtowc()'. memchr memchr() is C-specific, use index() instead. memcmp memcmp() is C-specific, use eq instead. memcpy memcpy() is C-specific, use = instead. memmove memmove() is C-specific, use = instead. memset memset() is C-specific, use x instead. mkdir This is identical to Perl's builtin `mkdir()' function. mkfifo This is similar to the C function `mkfifo()'. Returns `undef' on failure. mktime Convert date/time info to a calendar time. Synopsis: mktime(sec, min, hour, mday, mon, year, wday = 0, yday = 0, isdst = 0) The month (`mon'), weekday (`wday'), and yearday (`yday') begin at zero. I.e. January is 0, not 1; Sunday is 0, not 1; January 1st is 0, not 1. The year (`year') is given in years since 1900. I.e. The year 1995 is 95; the year 2001 is 101. Consult your system's `mktime()' manpage for details about these and the other arguments. Calendar time for December 12, 1995, at 10:30 am. $time_t = POSIX::mktime( 0, 30, 10, 12, 11, 95 ); print "Date = ", POSIX::ctime($time_t); Returns `undef' on failure. modf Return the integral and fractional parts of a floating-point number. ($fractional, $integral) = POSIX::modf( 3.14 ); nice This is similar to the C function `nice()'. Returns `undef' on failure. offsetof offsetof() is C-specific. open Open a file for reading for writing. This returns file descriptors, not Perl filehandles. Use `POSIX::close' to close the file. Open a file read-only with mode 0666. $fd = POSIX::open( "foo" ); Open a file for read and write. $fd = POSIX::open( "foo", &POSIX::O_RDWR ); Open a file for write, with truncation. $fd = POSIX::open( "foo", &POSIX::O_WRONLY | &POSIX::O_TRUNC ); Create a new file with mode 0640. Set up the file for writing. $fd = POSIX::open( "foo", &POSIX::O_CREAT | &POSIX::O_WRONLY, 0640 ); Returns `undef' on failure. opendir Open a directory for reading. $dir = POSIX::opendir( "/tmp" ); @files = POSIX::readdir( $dir ); POSIX::closedir( $dir ); Returns `undef' on failure. pathconf Retrieves the value of a configurable limit on a file or directory. The following will determine the maximum length of the longest allowable pathname on the filesystem which holds `/tmp'. $path_max = POSIX::pathconf( "/tmp", &POSIX::_PC_PATH_MAX ); Returns `undef' on failure. pause This is similar to the C function `pause()'. Returns `undef' on failure. perror This is identical to the C function `perror()'. pipe Create an interprocess channel. This returns file descriptors like those returned by `POSIX::open'. ($fd0, $fd1) = POSIX::pipe(); POSIX::write( $fd0, "hello", 5 ); POSIX::read( $fd1, $buf, 5 ); pow Computes $x raised to the power $exponent. $ret = POSIX::pow( $x, $exponent ); printf Prints the specified arguments to STDOUT. putc putc() is C-specific--use print instead. putchar putchar() is C-specific--use print instead. puts puts() is C-specific--use print instead. qsort qsort() is C-specific, use sort instead. raise Sends the specified signal to the current process. rand rand() is non-portable, use Perl's rand instead. read Read from a file. This uses file descriptors such as those obtained by calling `POSIX::open'. If the buffer `$buf' is not large enough for the read then Perl will extend it to make room for the request. $fd = POSIX::open( "foo", &POSIX::O_RDONLY ); $bytes = POSIX::read( $fd, $buf, 3 ); Returns `undef' on failure. readdir This is identical to Perl's builtin `readdir()' function. realloc realloc() is C-specific. remove This is identical to Perl's builtin `unlink()' function. rename This is identical to Perl's builtin `rename()' function. rewind Seeks to the beginning of the file. rewinddir This is identical to Perl's builtin `rewinddir()' function. rmdir This is identical to Perl's builtin `rmdir()' function. scanf scanf() is C-specific--use <> and regular expressions instead. setgid Sets the real group id for this process. setjmp setjmp() is C-specific: use eval {} instead. setlocale Modifies and queries program's locale. The following examples assume use POSIX qw(setlocale LC_ALL LC_CTYPE); has been issued. The following will set the traditional UNIX system locale behavior (the second argument `"C"'). $loc = setlocale( LC_ALL, "C" ); The following will query the current LC_CTYPE category. (No second argument means 'query'.) $loc = setlocale( LC_CTYPE ); The following will set the LC_CTYPE behaviour according to the locale environment variables (the second argument `""'). Please see your systems setlocale(3) documentation for the locale environment variables' meaning or consult the perllocale manpage. $loc = setlocale( LC_CTYPE, "" ); The following will set the LC_COLLATE behaviour to Argentinian Spanish. NOTE: The naming and availability of locales depends on your operating system. Please consult the perllocale manpage for how to find out which locales are available in your system. $loc = setlocale( LC_ALL, "es_AR.ISO8859-1" ); setpgid This is similar to the C function `setpgid()'. Returns `undef' on failure. setsid This is identical to the C function `setsid()'. setuid Sets the real user id for this process. sigaction Detailed signal management. This uses `POSIX::SigAction' objects for the `action' and `oldaction' arguments. Consult your system's `sigaction' manpage for details. Synopsis: sigaction(sig, action, oldaction = 0) Returns `undef' on failure. siglongjmp siglongjmp() is C-specific: use die instead. sigpending Examine signals that are blocked and pending. This uses `POSIX::SigSet' objects for the `sigset' argument. Consult your system's `sigpending' manpage for details. Synopsis: sigpending(sigset) Returns `undef' on failure. sigprocmask Change and/or examine calling process's signal mask. This uses `POSIX::SigSet' objects for the `sigset' and `oldsigset' arguments. Consult your system's `sigprocmask' manpage for details. Synopsis: sigprocmask(how, sigset, oldsigset = 0) Returns `undef' on failure. sigsetjmp sigsetjmp() is C-specific: use eval {} instead. sigsuspend Install a signal mask and suspend process until signal arrives. This uses `POSIX::SigSet' objects for the `signal_mask' argument. Consult your system's `sigsuspend' manpage for details. Synopsis: sigsuspend(signal_mask) Returns `undef' on failure. sin This is identical to Perl's builtin `sin()' function. sinh This is identical to the C function `sinh()'. sleep This is identical to Perl's builtin `sleep()' function. sprintf This is identical to Perl's builtin `sprintf()' function. sqrt This is identical to Perl's builtin `sqrt()' function. srand srand(). sscanf sscanf() is C-specific--use regular expressions instead. stat This is identical to Perl's builtin `stat()' function. strcat strcat() is C-specific, use .= instead. strchr strchr() is C-specific, use index() instead. strcmp strcmp() is C-specific, use eq instead. strcoll This is identical to the C function `strcoll()'. strcpy strcpy() is C-specific, use = instead. strcspn strcspn() is C-specific, use regular expressions instead. strerror Returns the error string for the specified errno. strftime Convert date and time information to string. Returns the string. Synopsis: strftime(fmt, sec, min, hour, mday, mon, year, wday = -1, yday = -1, isdst = -1) The month (`mon'), weekday (`wday'), and yearday (`yday') begin at zero. I.e. January is 0, not 1; Sunday is 0, not 1; January 1st is 0, not 1. The year (`year') is given in years since 1900. I.e., the year 1995 is 95; the year 2001 is 101. Consult your system's `strftime()' manpage for details about these and the other arguments. If you want your code to be portable, your format (`fmt') argument should use only the conversion specifiers defined by the ANSI C standard. These are `aAbBcdHIjmMpSUwWxXyYZ%'. The given arguments are made consistent as though by calling `mktime()' before calling your system's `strftime()' function, except that the `isdst' value is not affected. The string for Tuesday, December 12, 1995. $str = POSIX::strftime( "%A, %B %d, %Y", 0, 0, 0, 12, 11, 95, 2 ); print "$str\n"; strlen strlen() is C-specific, use length instead. strncat strncat() is C-specific, use .= instead. strncmp strncmp() is C-specific, use eq instead. strncpy strncpy() is C-specific, use = instead. stroul stroul() is C-specific. strpbrk strpbrk() is C-specific. strrchr strrchr() is C-specific, use rindex() instead. strspn strspn() is C-specific. strstr This is identical to Perl's builtin `index()' function. strtod String to double translation. Returns the parsed number and the number of characters in the unparsed portion of the string. Truly POSIX-compliant systems set $! ($ERRNO) to indicate a translation error, so clear $! before calling strtod. However, non-POSIX systems may not check for overflow, and therefore will never set $!. strtod should respect any POSIX setlocale() settings. To parse a string $str as a floating point number use $! = 0; ($num, $n_unparsed) = POSIX::strtod($str); The second returned item and $! can be used to check for valid input: if (($str eq '') || ($n_unparsed != 0) || !$!) { die "Non-numeric input $str" . $! ? ": $!\n" : "\n"; } When called in a scalar context strtod returns the parsed number. strtok strtok() is C-specific. strtol String to (long) integer translation. Returns the parsed number and the number of characters in the unparsed portion of the string. Truly POSIX- compliant systems set $! ($ERRNO) to indicate a translation error, so clear $! before calling strtol. However, non-POSIX systems may not check for overflow, and therefore will never set $!. strtol should respect any POSIX setlocale() settings. To parse a string $str as a number in some base $base use $! = 0; ($num, $n_unparsed) = POSIX::strtol($str, $base); The base should be zero or between 2 and 36, inclusive. When the base is zero or omitted strtol will use the string itself to determine the base: a leading "0x" or "0X" means hexadecimal; a leading "0" means octal; any other leading characters mean decimal. Thus, "1234" is parsed as a decimal number, "01234" as an octal number, and "0x1234" as a hexadecimal number. The second returned item and $! can be used to check for valid input: if (($str eq '') || ($n_unparsed != 0) || !$!) { die "Non-numeric input $str" . $! ? ": $!\n" : "\n"; } When called in a scalar context strtol returns the parsed number. strtoul String to unsigned (long) integer translation. strtoul is identical to strtol except that strtoul only parses unsigned integers. See strtol for details. Note: Some vendors supply strtod and strtol but not strtoul. Other vendors that do suply strtoul parse "-1" as a valid value. strxfrm String transformation. Returns the transformed string. $dst = POSIX::strxfrm( $src ); sysconf Retrieves values of system configurable variables. The following will get the machine's clock speed. $clock_ticks = POSIX::sysconf( &POSIX::_SC_CLK_TCK ); Returns `undef' on failure. system This is identical to Perl's builtin `system()' function. tan This is identical to the C function `tan()'. tanh This is identical to the C function `tanh()'. tcdrain This is similar to the C function `tcdrain()'. Returns `undef' on failure. tcflow This is similar to the C function `tcflow()'. Returns `undef' on failure. tcflush This is similar to the C function `tcflush()'. Returns `undef' on failure. tcgetpgrp This is identical to the C function `tcgetpgrp()'. tcsendbreak This is similar to the C function `tcsendbreak()'. Returns `undef' on failure. tcsetpgrp This is similar to the C function `tcsetpgrp()'. Returns `undef' on failure. time This is identical to Perl's builtin `time()' function. times The times() function returns elapsed realtime since some point in the past (such as system startup), user and system times for this process, and user and system times used by child processes. All times are returned in clock ticks. ($realtime, $user, $system, $cuser, $csystem) = POSIX::times(); Note: Perl's builtin `times()' function returns four values, measured in seconds. tmpfile Use method `IO::File::new_tmpfile()' instead. tmpnam Returns a name for a temporary file. $tmpfile = POSIX::tmpnam(); tolower This is identical to Perl's builtin `lc()' function. toupper This is identical to Perl's builtin `uc()' function. ttyname This is identical to the C function `ttyname()'. tzname Retrieves the time conversion information from the `tzname' variable. POSIX::tzset(); ($std, $dst) = POSIX::tzname(); tzset This is identical to the C function `tzset()'. umask This is identical to Perl's builtin `umask()' function. uname Get name of current operating system. ($sysname, $nodename, $release, $version, $machine ) = POSIX::uname(); ungetc Use method `IO::Handle::ungetc()' instead. unlink This is identical to Perl's builtin `unlink()' function. utime This is identical to Perl's builtin `utime()' function. vfprintf vfprintf() is C-specific. vprintf vprintf() is C-specific. vsprintf vsprintf() is C-specific. wait This is identical to Perl's builtin `wait()' function. waitpid Wait for a child process to change state. This is identical to Perl's builtin `waitpid()' function. $pid = POSIX::waitpid( -1, &POSIX::WNOHANG ); print "status = ", ($? / 256), "\n"; wcstombs This is identical to the C function `wcstombs()'. wctomb This is identical to the C function `wctomb()'. write Write to a file. This uses file descriptors such as those obtained by calling `POSIX::open'. $fd = POSIX::open( "foo", &POSIX::O_WRONLY ); $buf = "hello"; $bytes = POSIX::write( $b, $buf, 5 ); Returns `undef' on failure.CLASSES
POSIX::SigAction new Creates a new `POSIX::SigAction' object which corresponds to the C `struct sigaction'. This object will be destroyed automatically when it is no longer needed. The first parameter is the fully- qualified name of a sub which is a signal-handler. The second parameter is a `POSIX::SigSet' object, it defaults to the empty set. The third parameter contains the `sa_flags', it defaults to 0. $sigset = POSIX::SigSet->new(SIGINT, SIGQUIT); $sigaction = POSIX::SigAction->new( 'main::handler', $sigset, &POSIX::SA_NOCLDSTOP ); This `POSIX::SigAction' object should be used with the `POSIX::sigaction()' function. POSIX::SigSet new Create a new SigSet object. This object will be destroyed automatically when it is no longer needed. Arguments may be supplied to initialize the set. Create an empty set. $sigset = POSIX::SigSet->new; Create a set with SIGUSR1. $sigset = POSIX::SigSet->new( &POSIX::SIGUSR1 ); addset Add a signal to a SigSet object. $sigset->addset( &POSIX::SIGUSR2 ); Returns `undef' on failure. delset Remove a signal from the SigSet object. $sigset->delset( &POSIX::SIGUSR2 ); Returns `undef' on failure. emptyset Initialize the SigSet object to be empty. $sigset->emptyset(); Returns `undef' on failure. fillset Initialize the SigSet object to include all signals. $sigset->fillset(); Returns `undef' on failure. ismember Tests the SigSet object to see if it contains a specific signal. if( $sigset->ismember( &POSIX::SIGUSR1 ) ){ print "contains SIGUSR1\n"; } POSIX::Termios new Create a new Termios object. This object will be destroyed automatically when it is no longer needed. A Termios object corresponds to the termios C struct. new() mallocs a new one, getattr() fills it from a file descriptor, and setattr() sets a file descriptor's parameters to match Termios' contents. $termios = POSIX::Termios->new; getattr Get terminal control attributes. Obtain the attributes for stdin. $termios->getattr() Obtain the attributes for stdout. $termios->getattr( 1 ) Returns `undef' on failure. getcc Retrieve a value from the c_cc field of a termios object. The c_cc field is an array so an index must be specified. $c_cc[1] = $termios->getcc(1); getcflag Retrieve the c_cflag field of a termios object. $c_cflag = $termios->getcflag; getiflag Retrieve the c_iflag field of a termios object. $c_iflag = $termios->getiflag; getispeed Retrieve the input baud rate. $ispeed = $termios->getispeed; getlflag Retrieve the c_lflag field of a termios object. $c_lflag = $termios->getlflag; getoflag Retrieve the c_oflag field of a termios object. $c_oflag = $termios->getoflag; getospeed Retrieve the output baud rate. $ospeed = $termios->getospeed; setattr Set terminal control attributes. Set attributes immediately for stdout. $termios->setattr( 1, &POSIX::TCSANOW ); Returns `undef' on failure. setcc Set a value in the c_cc field of a termios object. The c_cc field is an array so an index must be specified. $termios->setcc( &POSIX::VEOF, 1 ); setcflag Set the c_cflag field of a termios object. $termios->setcflag( $c_cflag | &POSIX::CLOCAL ); setiflag Set the c_iflag field of a termios object. $termios->setiflag( $c_iflag | &POSIX::BRKINT ); setispeed Set the input baud rate. $termios->setispeed( &POSIX::B9600 ); Returns `undef' on failure. setlflag Set the c_lflag field of a termios object. $termios->setlflag( $c_lflag | &POSIX::ECHO ); setoflag Set the c_oflag field of a termios object. $termios->setoflag( $c_oflag | &POSIX::OPOST ); setospeed Set the output baud rate. $termios->setospeed( &POSIX::B9600 ); Returns `undef' on failure. Baud rate values B38400 B75 B200 B134 B300 B1800 B150 B0 B19200 B1200 B9600 B600 B4800 B50 B2400 B110 Terminal interface values TCSADRAIN TCSANOW TCOON TCIOFLUSH TCOFLUSH TCION TCIFLUSH TCSAFLUSH TCIOFF TCOOFF c_cc field values VEOF VEOL VERASE VINTR VKILL VQUIT VSUSP VSTART VSTOP VMIN VTIME NCCS c_cflag field values CLOCAL CREAD CSIZE CS5 CS6 CS7 CS8 CSTOPB HUPCL PARENB PARODD c_iflag field values BRKINT ICRNL IGNBRK IGNCR IGNPAR INLCR INPCK ISTRIP IXOFF IXON PARMRK c_lflag field values ECHO ECHOE ECHOK ECHONL ICANON IEXTEN ISIG NOFLSH TOSTOP c_oflag field values OPOSTPATHNAME CONSTANTS
Constants _PC_CHOWN_RESTRICTED _PC_LINK_MAX _PC_MAX_CANON _PC_MAX_INPUT _PC_NAME_MAX _PC_NO_TRUNC _PC_PATH_MAX _PC_PIPE_BUF _PC_VDISABLEPOSIX CONSTANTS
Constants _POSIX_ARG_MAX _POSIX_CHILD_MAX _POSIX_CHOWN_RESTRICTED _POSIX_JOB_CONTROL _POSIX_LINK_MAX _POSIX_MAX_CANON _POSIX_MAX_INPUT _POSIX_NAME_MAX _POSIX_NGROUPS_MAX _POSIX_NO_TRUNC _POSIX_OPEN_MAX _POSIX_PATH_MAX _POSIX_PIPE_BUF _POSIX_SAVED_IDS _POSIX_SSIZE_MAX _POSIX_STREAM_MAX _POSIX_TZNAME_MAX _POSIX_VDISABLE _POSIX_VERSIONSYSTEM CONFIGURATION
Constants _SC_ARG_MAX _SC_CHILD_MAX _SC_CLK_TCK _SC_JOB_CONTROL _SC_NGROUPS_MAX _SC_OPEN_MAX _SC_SAVED_IDS _SC_STREAM_MAX _SC_TZNAME_MAX _SC_VERSIONERRNO
Constants E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EAFNOSUPPORT EAGAIN EALREADY EBADF EBUSY ECHILD ECONNABORTED ECONNREFUSED ECONNRESET EDEADLK EDESTADDRREQ EDOM EDQUOT EEXIST EFAULT EFBIG EHOSTDOWN EHOSTUNREACH EINPROGRESS EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK EMSGSIZE ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH ENFILE ENOBUFS ENODEV ENOENT ENOEXEC ENOLCK ENOMEM ENOPROTOOPT ENOSPC ENOSYS ENOTBLK ENOTCONN ENOTDIR ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM EPFNOSUPPORT EPIPE EPROCLIM EPROTONOSUPPORT EPROTOTYPE ERANGE EREMOTE ERESTART EROFS ESHUTDOWN ESOCKTNOSUPPORT ESPIPE ESRCH ESTALE ETIMEDOUT ETOOMANYREFS ETXTBSY EUSERS EWOULDBLOCK EXDEVFCNTL
Constants FD_CLOEXEC F_DUPFD F_GETFD F_GETFL F_GETLK F_OK F_RDLCK F_SETFD F_SETFL F_SETLK F_SETLKW F_UNLCK F_WRLCK O_ACCMODE O_APPEND O_CREAT O_EXCL O_NOCTTY O_NONBLOCK O_RDONLY O_RDWR O_TRUNC O_WRONLYFLOAT
Constants DBL_DIG DBL_EPSILON DBL_MANT_DIG DBL_MAX DBL_MAX_10_EXP DBL_MAX_EXP DBL_MIN DBL_MIN_10_EXP DBL_MIN_EXP FLT_DIG FLT_EPSILON FLT_MANT_DIG FLT_MAX FLT_MAX_10_EXP FLT_MAX_EXP FLT_MIN FLT_MIN_10_EXP FLT_MIN_EXP FLT_RADIX FLT_ROUNDS LDBL_DIG LDBL_EPSILON LDBL_MANT_DIG LDBL_MAX LDBL_MAX_10_EXP LDBL_MAX_EXP LDBL_MIN LDBL_MIN_10_EXP LDBL_MIN_EXPLIMITS
Constants ARG_MAX CHAR_BIT CHAR_MAX CHAR_MIN CHILD_MAX INT_MAX INT_MIN LINK_MAX LONG_MAX LONG_MIN MAX_CANON MAX_INPUT MB_LEN_MAX NAME_MAX NGROUPS_MAX OPEN_MAX PATH_MAX PIPE_BUF SCHAR_MAX SCHAR_MIN SHRT_MAX SHRT_MIN SSIZE_MAX STREAM_MAX TZNAME_MAX UCHAR_MAX UINT_MAX ULONG_MAX USHRT_MAXLOCALE
Constants LC_ALL LC_COLLATE LC_CTYPE LC_MONETARY LC_NUMERIC LC_TIMEMATH
Constants HUGE_VALSIGNAL
Constants SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK SA_RESETHAND SA_RESTART SA_SIGINFO SIGABRT SIGALRM SIGCHLD SIGCONT SIGFPE SIGHUP SIGILL SIGINT SIGKILL SIGPIPE SIGQUIT SIGSEGV SIGSTOP SIGTERM SIGTSTP SIGTTIN SIGTTOU SIGUSR1 SIGUSR2 SIG_BLOCK SIG_DFL SIG_ERR SIG_IGN SIG_SETMASK SIG_UNBLOCKSTAT
Constants S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU S_ISGID S_ISUID S_IWGRP S_IWOTH S_IWUSR S_IXGRP S_IXOTH S_IXUSR Macros S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISREGSTDLIB
Constants EXIT_FAILURE EXIT_SUCCESS MB_CUR_MAX RAND_MAXSTDIO
Constants BUFSIZ EOF FILENAME_MAX L_ctermid L_cuserid L_tmpname TMP_MAXTIME
Constants CLK_TCK CLOCKS_PER_SECUNISTD
Constants R_OK SEEK_CUR SEEK_END SEEK_SET STDIN_FILENO STDOUT_FILENO STRERR_FILENO W_OK X_OKWAIT
Constants WNOHANG WUNTRACED Macros WIFEXITED WEXITSTATUS WIFSIGNALED WTERMSIG WIFSTOPPED WSTOPSIGCREATION
This document generated by ./mkposixman.PL version 19960129.
