The
mkfifo ();
system call
creates a new fifo file with name
Fa path .
The access permissions are
specified by
Fa mode
and restricted by the
umask(2)
of the calling process.
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
which it is created.
RETURN VALUES
Rv -std mkfifo
ERRORS
The
mkfifo ();
system call
will fail and no fifo will be created if:
Bq Er ENOTSUP
The kernel has not been configured to support fifo's.
Bq Er ENOTDIR
A component of the path prefix is not a directory.
Bq Er ENAMETOOLONG
A component of a pathname exceeded 255 characters,
or an entire path name exceeded 1023 characters.
Bq Er ENOENT
A component of the path prefix does not exist.
Bq Er EACCES
A component of the path prefix denies search permission, or write permission
is denied on the parent directory of the fifo to be created.
Bq Er ELOOP
Too many symbolic links were encountered in translating the pathname.
Bq Er EROFS
The named file would reside on a read-only file system.
Bq Er EEXIST
The named file exists.
Bq Er EPERM
The parent directory of the named file has its immutable flag set, see the
chflags(2)
manual page for more information.
Bq Er ENOSPC
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.
Bq Er ENOSPC
There are no free inodes on the file system on which the
fifo is being created.
Bq Er EDQUOT
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.
Bq Er EDQUOT
The user's quota of inodes on the file system on
which the fifo is being created has been exhausted.
Bq Er EIO
An
I/O
error occurred while making the directory entry or allocating the inode.
Bq Er EIO
An
I/O
error occurred while reading from or writing to the file system.
Bq Er EFAULT
The
Fa path
argument
points outside the process's allocated address space.
