cdevvp man page on MirBSD

cdevvp man page on MirBSD

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GETDEVVP(9)		      BSD Kernel Manual			   GETDEVVP(9)

NAME
     getdevvp, bdevvp, cdevvp, - create a vnode for a device

SYNOPSIS
     #include <sys/param.h>
     #include <sys/vnode.h>

     int
     getdevvp(dev_t dev, struct vnode **vpp, enum vtype type);

     int
     bdevvp(dev_t dev, struct vnode **vpp);

     int
     cdevvp(dev_t dev, struct vnode **vpp);

DESCRIPTION
     The getdevvp() function creates a vnode for a device of type type with a
     device number of dev, and returns a pointer to it in vpp.

     Its arguments are:

     dev	   The device number of the desired device.

     vpp	   Where the vnode will be returned on success.

     type	   The type of device, either:

		   VBLK	     For a block device, or

		   VCHR	     for a character device.

     bdevvp() and cdevvp() use getdevvp internally, specifying the third argu-
     ment. bdevvp() will create a vnode for a block device, and is used for
     the root file system and swap areas, among other things. cdevvp() will
     create a vnode for a character device and is used in kernfs and in some
     console handling.

RETURN VALUES
     All functions return 0 on success. If an error occurs, vpp will point to
     a NULLVP. See getnewvnode(9) for further return values.

SEE ALSO
     getnewvnode(9), vnode(9)

MirOS BSD #10-current	      February 18, 2002				     1

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