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Diffstat (limited to 'jni/ruby/ext/fcntl/fcntl.c')
| -rw-r--r-- | jni/ruby/ext/fcntl/fcntl.c | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/jni/ruby/ext/fcntl/fcntl.c b/jni/ruby/ext/fcntl/fcntl.c new file mode 100644 index 0000000..6503c78 --- /dev/null +++ b/jni/ruby/ext/fcntl/fcntl.c @@ -0,0 +1,245 @@ +/************************************************ + + fcntl.c - + + $Author: nobu $ + created at: Mon Apr 7 18:53:05 JST 1997 + + Copyright (C) 1997-2001 Yukihiro Matsumoto + +************************************************/ + +/************************************************ += NAME + +fcntl - load the C fcntl.h defines + += DESCRIPTION + +This module is just a translation of the C <fcntl.h> file. + += NOTE + +Only #define symbols get translated; you must still correctly +pack up your own arguments to pass as args for locking functions, etc. + +************************************************/ + +#include "ruby.h" +#include <fcntl.h> + +/* Fcntl loads the constants defined in the system's <fcntl.h> C header + * file, and used with both the fcntl(2) and open(2) POSIX system calls. + * + * To perform a fcntl(2) operation, use IO::fcntl. + * + * To perform an open(2) operation, use IO::sysopen. + * + * The set of operations and constants available depends upon specific + * operating system. Some values listed below may not be supported on your + * system. + * + * See your fcntl(2) man page for complete details. + * + * Open /tmp/tempfile as a write-only file that is created if it doesn't + * exist: + * + * require 'fcntl' + * + * fd = IO.sysopen('/tmp/tempfile', + * Fcntl::O_WRONLY | Fcntl::O_EXCL | Fcntl::O_CREAT) + * f = IO.open(fd) + * f.syswrite("TEMP DATA") + * f.close + * + * Get the flags on file +s+: + * + * m = s.fcntl(Fcntl::F_GETFL, 0) + * + * Set the non-blocking flag on +f+ in addition to the existing flags in +m+. + * + * f.fcntl(Fcntl::F_SETFL, Fcntl::O_NONBLOCK|m) + * + */ +void +Init_fcntl(void) +{ + VALUE mFcntl = rb_define_module("Fcntl"); +#ifdef F_DUPFD + /* Document-const: F_DUPFD + * + * Duplicate a file descriptor to the mimimum unused file descriptor + * greater than or equal to the argument. + * + * The close-on-exec flag of the duplicated file descriptor is set. + * (Ruby uses F_DUPFD_CLOEXEC internally if available to avoid race + * condition. F_SETFD is used if F_DUPFD_CLOEXEC is not available.) + */ + rb_define_const(mFcntl, "F_DUPFD", INT2NUM(F_DUPFD)); +#endif +#ifdef F_GETFD + /* Document-const: F_GETFD + * + * Read the close-on-exec flag of a file descriptor. + */ + rb_define_const(mFcntl, "F_GETFD", INT2NUM(F_GETFD)); +#endif +#ifdef F_GETLK + /* Document-const: F_GETLK + * + * Determine whether a given region of a file is locked. This uses one of + * the F_*LK flags. + */ + rb_define_const(mFcntl, "F_GETLK", INT2NUM(F_GETLK)); +#endif +#ifdef F_SETFD + /* Document-const: F_SETFD + * + * Set the close-on-exec flag of a file descriptor. + */ + rb_define_const(mFcntl, "F_SETFD", INT2NUM(F_SETFD)); +#endif +#ifdef F_GETFL + /* Document-const: F_GETFL + * + * Get the file descriptor flags. This will be one or more of the O_* + * flags. + */ + rb_define_const(mFcntl, "F_GETFL", INT2NUM(F_GETFL)); +#endif +#ifdef F_SETFL + /* Document-const: F_SETFL + * + * Set the file descriptor flags. This will be one or more of the O_* + * flags. + */ + rb_define_const(mFcntl, "F_SETFL", INT2NUM(F_SETFL)); +#endif +#ifdef F_SETLK + /* Document-const: F_SETLK + * + * Acquire a lock on a region of a file. This uses one of the F_*LCK + * flags. + */ + rb_define_const(mFcntl, "F_SETLK", INT2NUM(F_SETLK)); +#endif +#ifdef F_SETLKW + /* Document-const: F_SETLKW + * + * Acquire a lock on a region of a file, waiting if necessary. This uses + * one of the F_*LCK flags + */ + rb_define_const(mFcntl, "F_SETLKW", INT2NUM(F_SETLKW)); +#endif +#ifdef FD_CLOEXEC + /* Document-const: FD_CLOEXEC + * + * the value of the close-on-exec flag. + */ + rb_define_const(mFcntl, "FD_CLOEXEC", INT2NUM(FD_CLOEXEC)); +#endif +#ifdef F_RDLCK + /* Document-const: F_RDLCK + * + * Read lock for a region of a file + */ + rb_define_const(mFcntl, "F_RDLCK", INT2NUM(F_RDLCK)); +#endif +#ifdef F_UNLCK + /* Document-const: F_UNLCK + * + * Remove lock for a region of a file + */ + rb_define_const(mFcntl, "F_UNLCK", INT2NUM(F_UNLCK)); +#endif +#ifdef F_WRLCK + /* Document-const: F_WRLCK + * + * Write lock for a region of a file + */ + rb_define_const(mFcntl, "F_WRLCK", INT2NUM(F_WRLCK)); +#endif +#ifdef O_CREAT + /* Document-const: O_CREAT + * + * Create the file if it doesn't exist + */ + rb_define_const(mFcntl, "O_CREAT", INT2NUM(O_CREAT)); +#endif +#ifdef O_EXCL + /* Document-const: O_EXCL + * + * Used with O_CREAT, fail if the file exists + */ + rb_define_const(mFcntl, "O_EXCL", INT2NUM(O_EXCL)); +#endif +#ifdef O_NOCTTY + /* Document-const: O_NOCTTY + * + * Open TTY without it becoming the controlling TTY + */ + rb_define_const(mFcntl, "O_NOCTTY", INT2NUM(O_NOCTTY)); +#endif +#ifdef O_TRUNC + /* Document-const: O_TRUNC + * + * Truncate the file on open + */ + rb_define_const(mFcntl, "O_TRUNC", INT2NUM(O_TRUNC)); +#endif +#ifdef O_APPEND + /* Document-const: O_APPEND + * + * Open the file in append mode + */ + rb_define_const(mFcntl, "O_APPEND", INT2NUM(O_APPEND)); +#endif +#ifdef O_NONBLOCK + /* Document-const: O_NONBLOCK + * + * Open the file in non-blocking mode + */ + rb_define_const(mFcntl, "O_NONBLOCK", INT2NUM(O_NONBLOCK)); +#endif +#ifdef O_NDELAY + /* Document-const: O_NDELAY + * + * Open the file in non-blocking mode + */ + rb_define_const(mFcntl, "O_NDELAY", INT2NUM(O_NDELAY)); +#endif +#ifdef O_RDONLY + /* Document-const: O_RDONLY + * + * Open the file in read-only mode + */ + rb_define_const(mFcntl, "O_RDONLY", INT2NUM(O_RDONLY)); +#endif +#ifdef O_RDWR + /* Document-const: O_RDWR + * + * Open the file in read-write mode + */ + rb_define_const(mFcntl, "O_RDWR", INT2NUM(O_RDWR)); +#endif +#ifdef O_WRONLY + /* Document-const: O_WRONLY + * + * Open the file in write-only mode. + */ + rb_define_const(mFcntl, "O_WRONLY", INT2NUM(O_WRONLY)); +#endif +#ifdef O_ACCMODE + /* Document-const: O_ACCMODE + * + * Mask to extract the read/write flags + */ + rb_define_const(mFcntl, "O_ACCMODE", INT2FIX(O_ACCMODE)); +#else + /* Document-const: O_ACCMODE + * + * Mask to extract the read/write flags + */ + rb_define_const(mFcntl, "O_ACCMODE", INT2FIX(O_RDONLY | O_WRONLY | O_RDWR)); +#endif +} |