Differential D21525 Diff 61658 sys/fs/devfs/devfs_devs.c

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sys/fs/devfs/devfs_devs.c

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struct cdev_priv_list cdevp_list = TAILQ_HEAD_INITIALIZER(cdevp_list);		struct cdev_priv_list cdevp_list = TAILQ_HEAD_INITIALIZER(cdevp_list);

struct unrhdr *devfs_inos;		struct unrhdr *devfs_inos;


static MALLOC_DEFINE(M_DEVFS2, "DEVFS2", "DEVFS data 2");		static MALLOC_DEFINE(M_DEVFS2, "DEVFS2", "DEVFS data 2");
static MALLOC_DEFINE(M_DEVFS3, "DEVFS3", "DEVFS data 3");		static MALLOC_DEFINE(M_DEVFS3, "DEVFS3", "DEVFS data 3");
static MALLOC_DEFINE(M_CDEVP, "DEVFS1", "DEVFS cdev_priv storage");		static MALLOC_DEFINE(M_CDEVP, "DEVFS1", "DEVFS cdev_priv storage");
		MALLOC_DEFINE(M_CDEV_VP, "DEVFS4", "DEVFS vnode tables");

SYSCTL_NODE(_vfs, OID_AUTO, devfs, CTLFLAG_RW, 0, "DEVFS filesystem");		SYSCTL_NODE(_vfs, OID_AUTO, devfs, CTLFLAG_RW, 0, "DEVFS filesystem");

static unsigned devfs_generation;		static unsigned devfs_generation;
SYSCTL_UINT(_vfs_devfs, OID_AUTO, generation, CTLFLAG_RD,		SYSCTL_UINT(_vfs_devfs, OID_AUTO, generation, CTLFLAG_RD,
&devfs_generation, 0, "DEVFS generation number");		&devfs_generation, 0, "DEVFS generation number");

unsigned devfs_rule_depth = 1;		unsigned devfs_rule_depth = 1;
▲ Show 20 Lines • Show All 66 Lines • ▼ Show 20 Lines	if (cdp == NULL)
return (NULL);		return (NULL);

cdp->cdp_dirents = &cdp->cdp_dirent0;		cdp->cdp_dirents = &cdp->cdp_dirent0;

cdev = &cdp->cdp_c;		cdev = &cdp->cdp_c;
LIST_INIT(&cdev->si_children);		LIST_INIT(&cdev->si_children);
vfs_timestamp(&ts);		vfs_timestamp(&ts);
cdev->si_atime = cdev->si_mtime = cdev->si_ctime = ts;		cdev->si_atime = cdev->si_mtime = cdev->si_ctime = ts;
		cdev->si_vnodes = (void *)&cdev->si_vnodes_local;
		cdev->si_vnodes_size = nitems(cdev->si_vnodes_local);

return (cdev);		return (cdev);
}		}

int		int
devfs_dev_exists(const char *name)		devfs_dev_exists(const char *name)
{		{
struct cdev_priv *cdp;		struct cdev_priv *cdp;
Show All 13 Lines	devfs_dev_exists(const char *name)

return (0);		return (0);
}		}

void		void
devfs_free(struct cdev *cdev)		devfs_free(struct cdev *cdev)
{		{
struct cdev_priv *cdp;		struct cdev_priv *cdp;
		#ifdef INVARIANTS
		int i;
		#endif

cdp = cdev2priv(cdev);		cdp = cdev2priv(cdev);
if (cdev->si_cred != NULL)		if (cdev->si_cred != NULL)
crfree(cdev->si_cred);		crfree(cdev->si_cred);
devfs_free_cdp_inode(cdp->cdp_inode);		devfs_free_cdp_inode(cdp->cdp_inode);
if (cdp->cdp_maxdirent > 0)		if (cdp->cdp_maxdirent > 0)
free(cdp->cdp_dirents, M_DEVFS2);		free(cdp->cdp_dirents, M_DEVFS2);
		KASSERT(cdev->si_vnodes_assigned == 0, ("%s: cdev %p still has "
		"vnodes %d assigned", __func__, cdev, cdev->si_vnodes_assigned));
		#ifdef INVARIANTS
		for (i = 0; i < cdev->si_vnodes_size; i++) {
		if (cdev->si_vnodes[i] != NULL) {
		printf("%s: cdev %p non-NULL entry at %d\n", __func__,
		cdev, i);
		}
		}
		#endif
		if (cdev->si_vnodes != (void *)&cdev->si_vnodes_local)
		free(cdev->si_vnodes, M_CDEV_VP);
free(cdp, M_CDEVP);		free(cdp, M_CDEVP);
}		}

struct devfs_dirent *		struct devfs_dirent *
devfs_find(struct devfs_dirent dd, const char name, int namelen, int type)		devfs_find(struct devfs_dirent dd, const char name, int namelen, int type)
{		{
struct devfs_dirent *de;		struct devfs_dirent *de;

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