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MKFIFO(2)		    BSD	System Calls Manual		     MKFIFO(2)

NAME
     mkfifo -- make a fifo file

LIBRARY
     Standard C	Library	(libc, -lc)

SYNOPSIS
     #include <sys/types.h>
     #include <sys/stat.h>

     int
     mkfifo(const char *path, mode_t mode);

DESCRIPTION
     The mkfifo() system call creates a	new fifo file with name	path.  The ac-
     cess permissions are specified by 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
     The mkfifo() function returns the value 0 if successful; otherwise	the
     value -1 is returned and the global variable errno	is set to indicate the
     error.

ERRORS
     The mkfifo() system call will fail	and no fifo will be created if:

     [ENOTSUP]		The kernel has not been	configured to support fifo's.

     [ENOTDIR]		A component of the path	prefix is not a	directory.

     [ENAMETOOLONG]	A component of a pathname exceeded 255 characters, or
			an entire path name exceeded 1023 characters.

     [ENOENT]		A component of the path	prefix does not	exist.

     [EACCES]		A component of the path	prefix denies search permis-
			sion, or write permission is denied on the parent di-
			rectory	of the fifo to be created.

     [ELOOP]		Too many symbolic links	were encountered in translat-
			ing the	pathname.

     [EROFS]		The named file would reside on a read-only file	sys-
			tem.

     [EEXIST]		The named file exists.

     [EPERM]		The parent directory of	the named file has its im-
			mutable	flag set, see the chflags(2) manual page for
			more information.

     [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 direc-
			tory.

     [ENOSPC]		There are no free inodes on the	file system on which
			the fifo is being created.

     [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.

     [EDQUOT]		The user's quota of inodes on the file system on which
			the fifo is being created has been exhausted.

     [EIO]		An I/O error occurred while making the directory entry
			or allocating the inode.

     [EIO]		An I/O error occurred while reading from or writing to
			the file system.

     [EFAULT]		The path argument points outside the process's allo-
			cated address space.

SEE ALSO
     chflags(2), chmod(2), mknod(2), stat(2), umask(2)

STANDARDS
     The mkfifo() system call is expected to conform to	ISO/IEC	9945-1:1990
     ("POSIX.1").

BSD			       December	10, 2006			   BSD

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS

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