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* manual/filesys.texi: Document S_TYPEISMQ, S_TYPEISSEM, and
	S_TYPEISSHM.
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Ulrich Drepper 2000-06-22 19:17:44 +00:00
parent 33256e8a8c
commit d0db5a4454
2 changed files with 35 additions and 1 deletions
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@ -21,6 +21,8 @@
* sysdeps/unix/sysv/sysv4/i386/bits/stat.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/bits/stat.h: Likewise.
* sysdeps/unix/sysv/aix/bits/stat.h: Likewise.
* manual/filesys.texi: Document S_TYPEISMQ, S_TYPEISSEM, and
S_TYPEISSHM.
2000-06-22 Andreas Jaeger <aj@suse.de>

32
manual/filesys.texi
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@ -1811,6 +1811,38 @@ This is the file type constant of a socket.
This is the file type constant of a FIFO or pipe.
@end table
The POSIX.1b standard introduced a few more objects which possibly can
be implemented as object in the filesystem. These are message queues,
semaphores, and shared memory objects. To allow differentiating these
objects from other files the POSIX standard introduces three new test
macros. But unlike the other macros it does not take the value of the
@code{st_mode} field as the parameter. Instead they expect a pointer to
the whole @code{struct stat} structure.
@comment sys/stat.h
@comment POSIX
@deftypefn Macro int S_TYPEISMQ (struct stat @var{s})
If the system implement POSIX message queues as distinct objects and the
file is a message queue object, this macro returns a non-zero value.
In all other cases the result is zero.
@end deftypefn
@comment sys/stat.h
@comment POSIX
@deftypefn Macro int S_TYPEISSEM (struct stat @var{s})
If the system implement POSIX semaphores as distinct objects and the
file is a semaphore object, this macro returns a non-zero value.
In all other cases the result is zero.
@end deftypefn
@comment sys/stat.h
@comment POSIX
@deftypefn Macro int S_TYPEISSHM (struct stat @var{s})
If the system implement POSIX shared memory objects as distinct objects
and the file is an shared memory object, this macro returns a non-zero
value. In all other cases the result is zero.
@end deftypefn
@node File Owner
@subsection File Owner
@cindex file owner