.\" Copyright (c) 1990, 1991 The Regents of the University of California.
.\" %sccs.include.redist.man%
.\" @(#)mkfifo.2 6.3 (Berkeley) %G%
.Fd #include <sys/stat.h>
.Fn mkfifo "const char *path" "mode_t mode"
creates a new fifo file with name
The access permissions are
The fifo's owner ID is set to the process's effective user ID.
The fifo's group ID is set to that of the parent directory in
A 0 return value indicates success. A -1 return value
indicates an error, and an error code is stored in
will fail and no fifo will be created if:
.Bl -tag -width ENAMETOOLO
The kernel has not been configured to support fifo's.
A component of the path prefix is not a directory.
The pathname contains a character with the high-order bit set.
A component of a pathname exceeded 255 characters,
or an entire path name exceeded 1023 characters.
A component of the path prefix does not exist.
Search permission is denied for a component of the path prefix.
Too many symbolic links were encountered in translating the pathname.
argument contains a byte with the high-order bit set.
The named file resides on a read-only file system.
The directory in which the entry for the new fifo is being placed
cannot be extended because there is no space left on the file
system containing the directory.
There are no free inodes on the file system on which the
The directory in which the entry for the new fifo
is being placed cannot be extended because the
user's quota of disk blocks on the file system
containing the directory has been exhausted.
The user's quota of inodes on the file system on
which the fifo is being created has been exhausted.
An I/O error occurred while making the directory entry or allocating the inode.
An I/O error occurred while reading from or writing to the file system.
points outside the process's allocated address space.
conforms to IEEE Std 1003.1-1988