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: / proc / self / root / opt / cpanel / ea-ruby24 / root / usr / share / ri / system / Fcntl /
Filename : cdesc-Fcntl.ri
back
U:RDoc::NormalModule[iI"
Fcntl:ET@0o:RDoc::Markup::Document:@parts[o;;[o:RDoc::Markup::Paragraph;[I"JFcntl loads the constants defined in the system's <fcntl.h> C header ;TI"Jfile, and used with both the fcntl(2) and open(2) POSIX system calls.;To:RDoc::Markup::BlankLine�o;	;[I"4To perform a fcntl(2) operation, use IO::fcntl.;T@o;	;[I"6To perform an open(2) operation, use IO::sysopen.;T@o;	;[I"IThe set of operations and constants available depends upon specific ;TI"Noperating system.  Some values listed below may not be supported on your ;TI"system.;T@o;	;[I"5See your fcntl(2) man page for complete details.;T@o;	;[I"KOpen /tmp/tempfile as a write-only file that is created if it doesn't ;TI"exist:;T@o:RDoc::Markup::Verbatim;[I"require 'fcntl'
;TI"
;TI"&fd = IO.sysopen('/tmp/tempfile',
;TI"G                Fcntl::O_WRONLY | Fcntl::O_EXCL | Fcntl::O_CREAT)
;TI"f = IO.open(fd)
;TI"f.syswrite("TEMP DATA")
;TI"
f.close
;T:@format0o;	;[I"Get the flags on file +s+:;T@o;;[I"$m = s.fcntl(Fcntl::F_GETFL, 0)
;T;0o;	;[I"OSet the non-blocking flag on +f+ in addition to the existing flags in +m+.;T@o;;[I"1f.fcntl(Fcntl::F_SETFL, Fcntl::O_NONBLOCK|m);T;0:
@fileI"ext/fcntl/fcntl.c;T:0@omit_headings_from_table_of_contents_below0;
0;0[�[U:RDoc::Constant[i�I"F_DUPFD;TI"Fcntl::F_DUPFD;T00o;;[
o;	;[I"F_DUPFD;T@o;	;[I"GDuplicate a file descriptor to the mimimum unused file descriptor ;TI"+greater than or equal to the argument.;T@o;	;[I"FThe close-on-exec flag of the duplicated file descriptor is set. ;TI"F(Ruby uses F_DUPFD_CLOEXEC internally if available to avoid race ;TI"Fcondition.  F_SETFD is used if F_DUPFD_CLOEXEC is not available.);T;
@8;0@8@cRDoc::NormalModule0U;[i�I"F_GETFD;TI"Fcntl::F_GETFD;T00o;;[o;	;[I"F_GETFD;T@o;	;[I"6Read the close-on-exec flag of a file descriptor.;T;
@8;0@8@@M0U;[i�I"F_GETLK;TI"Fcntl::F_GETLK;T00o;;[o;	;[I"F_GETLK;T@o;	;[I"MDetermine whether a given region of a file is locked.  This uses one of ;TI"the F_*LK flags.;T;
@8;0@8@@M0U;[i�I"F_SETFD;TI"Fcntl::F_SETFD;T00o;;[o;	;[I"F_SETFD;T@o;	;[I"5Set the close-on-exec flag of a file descriptor.;T;
@8;0@8@@M0U;[i�I"F_GETFL;TI"Fcntl::F_GETFL;T00o;;[o;	;[I"F_GETFL;T@o;	;[I"IGet the file descriptor flags.  This will be one or more of the O_* ;TI"flags.;T;
@8;0@8@@M0U;[i�I"F_SETFL;TI"Fcntl::F_SETFL;T00o;;[o;	;[I"F_SETFL;T@o;	;[I"ISet the file descriptor flags.  This will be one or more of the O_* ;TI"flags.;T;
@8;0@8@@M0U;[i�I"F_SETLK;TI"Fcntl::F_SETLK;T00o;;[o;	;[I"F_SETLK;T@o;	;[I"HAcquire a lock on a region of a file.  This uses one of the F_*LCK ;TI"flags.;T;
@8;0@8@@M0U;[i�I"
F_SETLKW;TI"Fcntl::F_SETLKW;T00o;;[o;	;[I"
F_SETLKW;T@o;	;[I"LAcquire a lock on a region of a file, waiting if necessary.  This uses ;TI"one of the F_*LCK flags;T;
@8;0@8@@M0U;[i�I"FD_CLOEXEC;TI"Fcntl::FD_CLOEXEC;T00o;;[o;	;[I"FD_CLOEXEC;T@o;	;[I")the value of the close-on-exec flag.;T;
@8;0@8@@M0U;[i�I"F_RDLCK;TI"Fcntl::F_RDLCK;T00o;;[o;	;[I"F_RDLCK;T@o;	;[I"%Read lock for a region of a file;T;
@8;0@8@@M0U;[i�I"F_UNLCK;TI"Fcntl::F_UNLCK;T00o;;[o;	;[I"F_UNLCK;T@o;	;[I"'Remove lock for a region of a file;T;
@8;0@8@@M0U;[i�I"F_WRLCK;TI"Fcntl::F_WRLCK;T00o;;[o;	;[I"F_WRLCK;T@o;	;[I"&Write lock for a region of a file;T;
@8;0@8@@M0U;[i�I"O_CREAT;TI"Fcntl::O_CREAT;T00o;;[o;	;[I"O_CREAT;T@o;	;[I"(Create the file if it doesn't exist;T;
@8;0@8@@M0U;[i�I"O_EXCL;TI"Fcntl::O_EXCL;T00o;;[o;	;[I"O_EXCL;T@o;	;[I"/Used with O_CREAT, fail if the file exists;T;
@8;0@8@@M0U;[i�I"
O_NOCTTY;TI"Fcntl::O_NOCTTY;T00o;;[o;	;[I"
O_NOCTTY;T@o;	;[I"5Open TTY without it becoming the controlling TTY;T;
@8;0@8@@M0U;[i�I"O_TRUNC;TI"Fcntl::O_TRUNC;T00o;;[o;	;[I"O_TRUNC;T@o;	;[I"Truncate the file on open;T;
@8;0@8@@M0U;[i�I"
O_APPEND;TI"Fcntl::O_APPEND;T00o;;[o;	;[I"
O_APPEND;T@o;	;[I"!Open the file in append mode;T;
@8;0@8@@M0U;[i�I"O_NONBLOCK;TI"Fcntl::O_NONBLOCK;T00o;;[o;	;[I"O_NONBLOCK;T@o;	;[I"'Open the file in non-blocking mode;T;
@8;0@8@@M0U;[i�I"
O_NDELAY;TI"Fcntl::O_NDELAY;T00o;;[o;	;[I"
O_NDELAY;T@o;	;[I"'Open the file in non-blocking mode;T;
@8;0@8@@M0U;[i�I"
O_RDONLY;TI"Fcntl::O_RDONLY;T00o;;[o;	;[I"
O_RDONLY;T@o;	;[I"$Open the file in read-only mode;T;
@8;0@8@@M0U;[i�I"O_RDWR;TI"Fcntl::O_RDWR;T00o;;[o;	;[I"O_RDWR;T@o;	;[I"%Open the file in read-write mode;T;
@8;0@8@@M0U;[i�I"
O_WRONLY;TI"Fcntl::O_WRONLY;T00o;;[o;	;[I"
O_WRONLY;T@o;	;[I"&Open the file in write-only mode.;T;
@8;0@8@@M0U;[i�I"O_ACCMODE;TI"Fcntl::O_ACCMODE;T00o;;[o;	;[I"O_ACCMODE;T@o;	;[I")Mask to extract the read/write flags;T;
@8;0@8@@M0[�[[I"
class;T[[:public[�[:protected[�[:private[�[I"
instance;T[[;[�[;[�[;[�[�[U:RDoc::Context::Section[i�0o;;[�;
0;0[@8@8cRDoc::TopLevel