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The device
special file is created with the major and minor device numbers extracted
from The access permissions of are descendant from the of the parent
process. If indicates a block or character special file, is a configuration
dependent specification of a character or block I/O device and the superblock
of the device. If does not indicate a block special or character special
device, is ignored. requires super-user privileges.
Upon successful
completion a value of 0 is returned. Otherwise, a value of -1 is returned
and is set to indicate the error.
will fail and the file will be
not created if: A component of the path prefix is not a directory. A
component of a pathname exceeded characters, or an entire path name exceeded
characters. A component of the path prefix does not exist. Search permission
is denied for a component of the path prefix. Too many symbolic links were
encountered in translating the pathname. The process’s effective user ID
is not super-user. An I/O error occurred while making the directory entry
or allocating the inode. The directory in which the entry for the new node
is being placed cannot be extended because there is no space left on the
file system containing the directory. There are no free inodes on the file
system on which the node is being created. The directory in which the entry
for the new node is being placed cannot be extended because the user’s quota
of disk blocks on the file system containing the directory has been exhausted.
The user’s quota of inodes on the file system on which the node is being
created has been exhausted. The named file resides on a read-only file system.
The named file exists. points outside the process’s allocated address
space.
A function call appeared in
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