Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

mknod(2) [netbsd man page]

MKNOD(2)						      BSD System Calls Manual							  MKNOD(2)

NAME
mknod -- make a special file node LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <sys/stat.h> int mknod(const char *path, mode_t mode, dev_t dev); DESCRIPTION
The device special file path is created with the major and minor device numbers specified by dev. The access permissions of path are extracted from mode, modified by the umask(2) of the parent process. mknod() requires super-user privileges. RETURN VALUES
Upon successful completion a value of 0 is returned. Otherwise, a value of -1 is returned and errno is set to indicate the error. ERRORS
mknod() will fail and the file will be not created if: [EACCES] Search permission is denied for a component of the path prefix. [EDQUOT] 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; or the user's quota of inodes on the file system on which the node is being created has been exhausted. [EEXIST] The named file exists. [EFAULT] path points outside the process's allocated address space. [EINVAL] The supplied mode or dev is invalid. [EIO] An I/O error occurred while making the directory entry or allocating the inode. [ELOOP] Too many symbolic links were encountered in translating the pathname. [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. [ENOSPC] 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; or there are no free inodes on the file system on which the node is being created. [ENOTDIR] A component of the path prefix is not a directory. [EPERM] The process's effective user ID is not super-user. [EROFS] The named file resides on a read-only file system. SEE ALSO
chmod(2), mkfifo(2), stat(2), umask(2) HISTORY
A mknod() function call appeared in Version 6 AT&T UNIX. BSD
July 3, 2011 BSD

Check Out this Related Man Page

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

NAME
mkfifo -- make a fifo file LIBRARY
Standard C Library (libc, -lc) SYNOPSIS
#include <sys/stat.h> int mkfifo(const char *path, mode_t mode); DESCRIPTION
mkfifo() 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. ERRORS
mkfifo() will fail and no fifo will be created if: [EOPNOTSUPP] 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 {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 ALSO
chmod(2), stat(2), umask(2) STANDARDS
The mkfifo function call conforms to ISO/IEC 9945-1:1990 (``POSIX.1''). BSD
June 4, 1993 BSD
Man Page

Featured Tech Videos