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mkfifo.2freebsd

BSD mandoc

NAME

mkfifo - make a fifo file

LIBRARY

Lb libc

SYNOPSIS

In sys/types.h In sys/stat.h Ft int Fn mkfifo const char *path mode_t mode

DESCRIPTION

The Fn 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 Fn 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.

SEE ALSO

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

STANDARDS

The Fn mkfifo system call is expected to conform to St -p1003.1-90 .