mknod.c File Reference

Making a filesystem node by its path: a file, a directory, a device node, a FIFO or a symbolic link. More...

#include <core/system.h>
#include <fs/vfs.h>

Go to the source code of this file.

Functions
int	vfs_mknod (const char *path, mode_t mode, dev_t dev, struct uio *uio, struct vnode **ref)
	Makes a node at a path.
int	vfs_mkdir (const char *path, mode_t mode, struct uio *uio, struct vnode **ref)
	Makes a directory at a path.
int	vfs_creat (const char *path, mode_t mode, struct uio *uio, struct vnode **ref)
	Makes a regular file at a path.

Detailed Description

Making a filesystem node by its path: a file, a directory, a device node, a FIFO or a symbolic link.

Definition in file mknod.c.

Function Documentation

vfs_creat()

int vfs_creat	(	const char *	path,
		mode_t	mode,
		struct uio *	uio,
		struct vnode **	ref )

Makes a regular file at a path.

Parameters

path	the new file's path
mode	its permissions
uio	who is asking
ref	if not NULL, set to the new vnode (the caller closes it)

Returns

0, or a negative errno

Definition at line 69 of file mknod.c.

References vnode::mode, vnode::ref, vfs_creat(), and vfs_mknod().

Referenced by do_openat(), and vfs_creat().

vfs_mkdir()

int vfs_mkdir	(	const char *	path,
		mode_t	mode,
		struct uio *	uio,
		struct vnode **	ref )

Makes a directory at a path.

Parameters

path	the new directory's path
mode	its permissions
uio	who is asking
ref	if not NULL, set to the new vnode (the caller closes it)

Returns

0, or a negative errno

Definition at line 55 of file mknod.c.

References vnode::mode, vnode::ref, vfs_mkdir(), and vfs_mknod().

Referenced by vfs_mkdir().

vfs_mknod()

int vfs_mknod	(	const char *	path,
		mode_t	mode,
		dev_t	dev,
		struct uio *	uio,
		struct vnode **	ref )

Makes a node at a path.

The caller's umask applies to the mode (but not for a symbolic link), and it needs write and search permission on the directory.

Parameters

path	the new node's path
mode	its type (S_IF*) and permissions
dev	its device number, for a device node
uio	who is asking (for permissions and the umask)
ref	if not NULL, set to the new vnode (the caller closes it)

Returns

0, -EEXIST if something is there already, or a negative errno

Definition at line 21 of file mknod.c.

References kfree(), uio::mask, vnode::mode, NULL, vnode::ref, vfs_access(), vfs_close(), vfs_lookup_parent(), vfs_mknod(), vfs_vmknod(), VFS_W, and VFS_X.

Referenced by do_mknodat(), kmain(), socket_unix_bind(), vfs_creat(), vfs_mkdir(), vfs_mknod(), and vfs_symlink().