close.c

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

int vfs_close(struct vnode *vnode)
{
    vfs_log(LOG_DEBUG, "vfs_close(vnode=%p)\n", vnode);
 
    /* invalid request */
    if (!vnode || !vnode->fs)
        return -EINVAL;
 
    if (!vnode->ref)
        panic("closing an already closed vnode");
 
    vnode->ref--;
 
    /* filesystems without a close operation keep their vnodes around */
    if (!vnode->ref && vnode->fs->vops.close)
        return vnode->fs->vops.close(vnode);
 
    return 0;
}