COUNT_DEV(9FREEBSD) - man page online | system kernel interfaces
Get total number of references to a device.
January 19, 2012
VCOUNT(9) BSD Kernel Developer's Manual VCOUNT(9)
NAME vcount, count_dev — get total number of references to a device SYNOPSIS #include <sys/param.h> #include <sys/time.h> #include <sys/conf.h> #include <sys/vnode.h> int vcount(struct vnode *vp); int count_dev(struct cdev *dev); DESCRIPTION vcount() is used to get the number of references to a particular device. It allows for the fact that multiple vnodes may reference the same device. count_dev() does the same thing as vcount(), but takes a struct cdev rather than a struct vnode pointer as an argument. RETURN VALUES vcount() and count_dev() both return the number of references to the device. SEE ALSO VFS(9), vnode(9)BSD January 19, 2012 BSD
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