diff options
Diffstat (limited to 'sys/kern/vfs_init.c')
| -rw-r--r-- | sys/kern/vfs_init.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sys/kern/vfs_init.c b/sys/kern/vfs_init.c index 76d1155..bbec365 100644 --- a/sys/kern/vfs_init.c +++ b/sys/kern/vfs_init.c @@ -56,6 +56,11 @@ MALLOC_DEFINE(M_VNODE, "vnodes", "Dynamically allocated vnodes"); * The highest defined VFS number. */ int maxvfsconf = VFS_GENERIC + 1; + +/* + * Single-linked list of configured VFSes. + * New entries are added/deleted by vfs_register()/vfs_unregister() + */ struct vfsconf *vfsconf; /* @@ -81,10 +86,19 @@ static int vnodeopv_num; /* Table of known descs (list of vnode op handlers "vop_access_desc") */ static struct vnodeop_desc **vfs_op_descs; -static int *vfs_op_desc_refs; /* reference counts */ +/* Reference counts for vfs_op_descs */ +static int *vfs_op_desc_refs; +/* Number of descriptions */ static int num_op_descs; +/* Number of entries in each description */ static int vfs_opv_numops; +/* + * Recalculate the operations vector/description (those parts of it that can + * be recalculated, that is.) + * XXX It may be preferable to replace this function with an invariant check + * and a set of functions that should keep the table invariant. + */ static void vfs_opv_recalc(void) { @@ -143,6 +157,7 @@ vfs_opv_recalc(void) } } +/* Add a set of vnode operations (a description) to the table above. */ void vfs_add_vnodeops(const void *data) { @@ -210,6 +225,7 @@ vfs_add_vnodeops(const void *data) vfs_opv_recalc(); } +/* Remove a vnode type from the vnode description table above. */ void vfs_rm_vnodeops(const void *data) { @@ -302,6 +318,7 @@ vfsinit(void *dummy) } SYSINIT(vfs, SI_SUB_VFS, SI_ORDER_FIRST, vfsinit, NULL) +/* Register a new file system type in the global table */ int vfs_register(struct vfsconf *vfc) { @@ -347,6 +364,7 @@ vfs_register(struct vfsconf *vfc) } +/* Remove registration of a file system type */ int vfs_unregister(struct vfsconf *vfc) { @@ -382,6 +400,10 @@ vfs_unregister(struct vfsconf *vfc) return 0; } +/* + * Standard kernel module handling code for file system modules. + * Referenced from VFS_SET(). + */ int vfs_modevent(module_t mod, int type, void *data) { |
