MKFIFO(2) OpenBSD Programmer's Manual MKFIFO(2)NAMEmkfifo - make a FIFO file
SYNOPSIS
#include <sys/types.h>
#include <sys/stat.h>
int
mkfifo(const char *path, mode_t mode);
DESCRIPTIONmkfifo() creates a new FIFO file with name path. The access 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
A 0 return value indicates success. A -1 return value indicates an
error, and an error code is stored in errno.
ERRORSmkfifo() will fail and no FIFO will be created if:
[EOPNOTSUPP] The kernel has not been configured to support FIFOs.
[ENOTDIR] A component of the path prefix is not a directory.
[ENAMETOOLONG]
A component of a pathname exceeded {NAME_MAX} characters,
or an entire path name exceeded {PATH_MAX} characters.
[ENOENT] A component of the path prefix does not exist.
[EACCES] Search permission is denied for a component of the path
prefix.
[ELOOP] Too many symbolic links were encountered in translating the
pathname.
[EROFS] The named file resides on a read-only file system.
[EEXIST] The named file exists.
[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.
[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] path points outside the process's allocated address space.
SEE ALSOchmod(2), stat(2), umask(2)STANDARDS
The mkfifo function call conforms to IEEE Std 1003.1-1988 (``POSIX'').
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
