There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
121 lines
4 KiB
Groff
121 lines
4 KiB
Groff
.\" $NetBSD: mkfifo.2,v 1.20 2010/05/31 12:16:20 njoly Exp $
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.\"
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.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)mkfifo.2 8.1 (Berkeley) 6/4/93
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.\"
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.Dd June 4, 1993
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.Dt MKFIFO 2
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.Os
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.Sh NAME
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.Nm mkfifo
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.Nd make a fifo file
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In sys/stat.h
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.Ft int
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.Fn mkfifo "const char *path" "mode_t mode"
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.Sh DESCRIPTION
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.Fn mkfifo
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creates a new fifo file with name
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.Fa path .
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The access permissions are
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specified by
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.Fa mode
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and restricted by the
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.Xr umask 2
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of the calling process.
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.Pp
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The fifo's owner ID is set to the process's effective user ID.
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The fifo's group ID is set to that of the parent directory in
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which it is created.
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.Sh RETURN VALUES
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A 0 return value indicates success.
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A \-1 return value indicates an error, and an error code is stored in
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.Va errno .
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.Sh ERRORS
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.Fn mkfifo
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will fail and no fifo will be created if:
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.Bl -tag -width Er
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.It Bq Er EOPNOTSUPP
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The kernel has not been configured to support fifo's.
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.It Bq Er ENOTDIR
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A component of the path prefix is not a directory.
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.It Bq Er ENAMETOOLONG
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A component of a pathname exceeded
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.Brq Dv NAME_MAX
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characters, or an entire path name exceeded
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.Brq Dv PATH_MAX
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characters.
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.It Bq Er ENOENT
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A component of the path prefix does not exist.
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.It Bq Er EACCES
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Search permission is denied for a component of the path prefix.
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.It Bq Er ELOOP
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Too many symbolic links were encountered in translating the pathname.
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.It Bq Er EROFS
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The named file resides on a read-only file system.
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.It Bq Er EEXIST
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The named file exists.
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.It Bq Er ENOSPC
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The directory in which the entry for the new fifo is being placed
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cannot be extended because there is no space left on the file
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system containing the directory.
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.It Bq Er ENOSPC
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There are no free inodes on the file system on which the
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fifo is being created.
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.It Bq Er EDQUOT
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The directory in which the entry for the new fifo
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is being placed cannot be extended because the
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user's quota of disk blocks on the file system
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containing the directory has been exhausted.
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.It Bq Er EDQUOT
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The user's quota of inodes on the file system on
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which the fifo is being created has been exhausted.
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.It Bq Er EIO
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An
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.Tn I/O
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error occurred while making the directory entry or allocating the inode.
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.It Bq Er EIO
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An
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.Tn I/O
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error occurred while reading from or writing to the file system.
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.It Bq Er EFAULT
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.Fa path
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points outside the process's allocated address space.
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.El
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.Sh SEE ALSO
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.Xr chmod 2 ,
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.Xr stat 2 ,
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.Xr umask 2
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.Sh STANDARDS
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The
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.Nm mkfifo
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function call conforms to
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.St -p1003.1-90 .
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