MKFIFO(3)                DOMAIN/IX SYS5                 MKFIFO(3)



NAME
     mkfifo - make a FIFO special file

USAGE
     mkfifo(path, mode)
     char *path;
     int mode;

     Mkfifo creates a FIFO special file whose name is pointed to
     by path. Mode sets the mode of the new file, including the
     special file bits.  (The protection part of the mode is
     modified by the process's mode mask; see umask(2)).  The
     owner ID of the file is set to the effective user ID of the
     process.  The group ID of the file is set to the effective
     group ID of the process.

NOTES
     The DOMAIN System's single level store architecture requires
     that all filesystem objects be readable in order to be writ-
     able or executable.  Since write-only or execute-only files
     would be unusable in DOMAIN/IX, modes that specify 02
     (write-only) or 01 (execute-only) are ORed with 0400 to
     force read permission.  This applies to the owner, group,
     and world portions of the mode word.  For example, if mode
     0631 were specified, the mode applied to the file would
     actually be 0675.

RETURN VALUE
     A successful call returns zero.  A failed call returns -1
     and sets errno as indicated below.

ERRORS
     Mknod will fail if:

     [EACCESS] A component of the path prefix denies search per-
               mission.

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

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

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

     [EROFS]   The named file resides on a read-only file system.

     [EEXIST]  The named file exists.

     [EFAULT]  Path points outside the process's allocated
               address space.



Printed 12/4/86                                          MKFIFO-1

MKFIFO(3)                DOMAIN/IX SYS5                 MKFIFO(3)



RELATED INFORMATION
     chmod(2), stat(2), umask(2)



















































MKFIFO-2                                          Printed 12/4/86