diff options
Diffstat (limited to 'sys/kern/vfs_subr.c')
-rw-r--r-- | sys/kern/vfs_subr.c | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 4bb58fe..17d4089 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -50,38 +50,24 @@ #include <sys/bio.h> #include <sys/buf.h> #include <sys/conf.h> -#include <sys/dirent.h> -#include <sys/domain.h> #include <sys/eventhandler.h> -#include <sys/event.h> #include <sys/fcntl.h> #include <sys/kernel.h> #include <sys/kthread.h> -#include <sys/ktr.h> #include <sys/malloc.h> -#include <net/radix.h> -#include <sys/socket.h> #include <sys/mount.h> -#include <sys/mutex.h> #include <sys/namei.h> -#include <sys/proc.h> -#include <sys/reboot.h> -#include <sys/socket.h> #include <sys/stat.h> #include <sys/sysctl.h> #include <sys/vmmeter.h> #include <sys/vnode.h> -#include <machine/limits.h> -#include <net/radix.h> #include <vm/vm.h> #include <vm/vm_object.h> #include <vm/vm_extern.h> #include <vm/pmap.h> #include <vm/vm_map.h> #include <vm/vm_page.h> -#include <vm/vm_pager.h> -#include <vm/vnode_pager.h> #include <vm/vm_zone.h> static MALLOC_DEFINE(M_NETADDR, "Export Host", "Export host address structure"); @@ -253,28 +239,6 @@ int desiredvnodes; SYSCTL_INT(_kern, KERN_MAXVNODES, maxvnodes, CTLFLAG_RW, &desiredvnodes, 0, "Maximum number of vnodes"); -static void vfs_free_addrlist __P((struct netexport *nep)); -static int vfs_free_netcred __P((struct radix_node *rn, void *w)); -static int vfs_hang_addrlist __P((struct mount *mp, struct netexport *nep, - struct export_args *argp)); - -/* - * Network address lookup element - */ -struct netcred { - struct radix_node netc_rnodes[2]; - int netc_exflags; - struct ucred netc_anon; -}; - -/* - * Network export information - */ -struct netexport { - struct netcred ne_defexported; /* Default export */ - struct radix_node_head *ne_rtable[AF_MAX+1]; /* Individual exports */ -}; - /* * Initialize the vnode management data structures. */ @@ -2343,290 +2307,6 @@ vfs_unmountall() } /* - * Build hash lists of net addresses and hang them off the mount point. - * Called by ufs_mount() to set up the lists of export addresses. - */ -static int -vfs_hang_addrlist(mp, nep, argp) - struct mount *mp; - struct netexport *nep; - struct export_args *argp; -{ - register struct netcred *np; - register struct radix_node_head *rnh; - register int i; - struct radix_node *rn; - struct sockaddr *saddr, *smask = 0; - struct domain *dom; - int error; - - if (argp->ex_addrlen == 0) { - if (mp->mnt_flag & MNT_DEFEXPORTED) - return (EPERM); - np = &nep->ne_defexported; - np->netc_exflags = argp->ex_flags; - bzero(&np->netc_anon, sizeof(np->netc_anon)); - np->netc_anon.cr_uid = argp->ex_anon.cr_uid; - np->netc_anon.cr_ngroups = argp->ex_anon.cr_ngroups; - bcopy(argp->ex_anon.cr_groups, np->netc_anon.cr_groups, - sizeof(np->netc_anon.cr_groups)); - np->netc_anon.cr_ref = 1; - mp->mnt_flag |= MNT_DEFEXPORTED; - return (0); - } - i = sizeof(struct netcred) + argp->ex_addrlen + argp->ex_masklen; - np = (struct netcred *) malloc(i, M_NETADDR, M_WAITOK | M_ZERO); - saddr = (struct sockaddr *) (np + 1); - if ((error = copyin(argp->ex_addr, (caddr_t) saddr, argp->ex_addrlen))) - goto out; - if (saddr->sa_len > argp->ex_addrlen) - saddr->sa_len = argp->ex_addrlen; - if (argp->ex_masklen) { - smask = (struct sockaddr *) ((caddr_t) saddr + argp->ex_addrlen); - error = copyin(argp->ex_mask, (caddr_t) smask, argp->ex_masklen); - if (error) - goto out; - if (smask->sa_len > argp->ex_masklen) - smask->sa_len = argp->ex_masklen; - } - i = saddr->sa_family; - if ((rnh = nep->ne_rtable[i]) == 0) { - /* - * Seems silly to initialize every AF when most are not used, - * do so on demand here - */ - for (dom = domains; dom; dom = dom->dom_next) - if (dom->dom_family == i && dom->dom_rtattach) { - dom->dom_rtattach((void **) &nep->ne_rtable[i], - dom->dom_rtoffset); - break; - } - if ((rnh = nep->ne_rtable[i]) == 0) { - error = ENOBUFS; - goto out; - } - } - rn = (*rnh->rnh_addaddr) ((caddr_t) saddr, (caddr_t) smask, rnh, - np->netc_rnodes); - if (rn == 0 || np != (struct netcred *) rn) { /* already exists */ - error = EPERM; - goto out; - } - np->netc_exflags = argp->ex_flags; - bzero(&np->netc_anon, sizeof(np->netc_anon)); - np->netc_anon.cr_uid = argp->ex_anon.cr_uid; - np->netc_anon.cr_ngroups = argp->ex_anon.cr_ngroups; - bcopy(argp->ex_anon.cr_groups, np->netc_anon.cr_groups, - sizeof(np->netc_anon.cr_groups)); - np->netc_anon.cr_ref = 1; - return (0); -out: - free(np, M_NETADDR); - return (error); -} - -/* Helper for vfs_free_addrlist. */ -/* ARGSUSED */ -static int -vfs_free_netcred(rn, w) - struct radix_node *rn; - void *w; -{ - register struct radix_node_head *rnh = (struct radix_node_head *) w; - - (*rnh->rnh_deladdr) (rn->rn_key, rn->rn_mask, rnh); - free((caddr_t) rn, M_NETADDR); - return (0); -} - -/* - * Free the net address hash lists that are hanging off the mount points. - */ -static void -vfs_free_addrlist(nep) - struct netexport *nep; -{ - register int i; - register struct radix_node_head *rnh; - - for (i = 0; i <= AF_MAX; i++) - if ((rnh = nep->ne_rtable[i])) { - (*rnh->rnh_walktree) (rnh, vfs_free_netcred, - (caddr_t) rnh); - free((caddr_t) rnh, M_RTABLE); - nep->ne_rtable[i] = 0; - } -} - -/* - * High level function to manipulate export options on a mount point - * and the passed in netexport. - * Struct export_args *argp is the variable used to twiddle options, - * the structure is described in sys/mount.h - */ -int -vfs_export(mp, argp) - struct mount *mp; - struct export_args *argp; -{ - struct netexport *nep; - int error; - - nep = mp->mnt_export; - if (argp->ex_flags & MNT_DELEXPORT) { - if (nep == NULL) - return (EINVAL); - if (mp->mnt_flag & MNT_EXPUBLIC) { - vfs_setpublicfs(NULL, NULL, NULL); - mp->mnt_flag &= ~MNT_EXPUBLIC; - } - vfs_free_addrlist(nep); - mp->mnt_export = NULL; - free(nep, M_MOUNT); - mp->mnt_flag &= ~(MNT_EXPORTED | MNT_DEFEXPORTED); - } - if (argp->ex_flags & MNT_EXPORTED) { - if (nep == NULL) { - nep = malloc(sizeof(struct netexport), M_MOUNT, M_WAITOK | M_ZERO); - mp->mnt_export = nep; - } - if (argp->ex_flags & MNT_EXPUBLIC) { - if ((error = vfs_setpublicfs(mp, nep, argp)) != 0) - return (error); - mp->mnt_flag |= MNT_EXPUBLIC; - } - if ((error = vfs_hang_addrlist(mp, nep, argp))) - return (error); - mp->mnt_flag |= MNT_EXPORTED; - } - return (0); -} - -/* - * Set the publicly exported filesystem (WebNFS). Currently, only - * one public filesystem is possible in the spec (RFC 2054 and 2055) - */ -int -vfs_setpublicfs(mp, nep, argp) - struct mount *mp; - struct netexport *nep; - struct export_args *argp; -{ - int error; - struct vnode *rvp; - char *cp; - - /* - * mp == NULL -> invalidate the current info, the FS is - * no longer exported. May be called from either vfs_export - * or unmount, so check if it hasn't already been done. - */ - if (mp == NULL) { - if (nfs_pub.np_valid) { - nfs_pub.np_valid = 0; - if (nfs_pub.np_index != NULL) { - FREE(nfs_pub.np_index, M_TEMP); - nfs_pub.np_index = NULL; - } - } - return (0); - } - - /* - * Only one allowed at a time. - */ - if (nfs_pub.np_valid != 0 && mp != nfs_pub.np_mount) - return (EBUSY); - - /* - * Get real filehandle for root of exported FS. - */ - bzero((caddr_t)&nfs_pub.np_handle, sizeof(nfs_pub.np_handle)); - nfs_pub.np_handle.fh_fsid = mp->mnt_stat.f_fsid; - - if ((error = VFS_ROOT(mp, &rvp))) - return (error); - - if ((error = VFS_VPTOFH(rvp, &nfs_pub.np_handle.fh_fid))) - return (error); - - vput(rvp); - - /* - * If an indexfile was specified, pull it in. - */ - if (argp->ex_indexfile != NULL) { - MALLOC(nfs_pub.np_index, char *, MAXNAMLEN + 1, M_TEMP, - M_WAITOK); - error = copyinstr(argp->ex_indexfile, nfs_pub.np_index, - MAXNAMLEN, (size_t *)0); - if (!error) { - /* - * Check for illegal filenames. - */ - for (cp = nfs_pub.np_index; *cp; cp++) { - if (*cp == '/') { - error = EINVAL; - break; - } - } - } - if (error) { - FREE(nfs_pub.np_index, M_TEMP); - return (error); - } - } - - nfs_pub.np_mount = mp; - nfs_pub.np_valid = 1; - return (0); -} - -/* - * Used by the filesystems to determine if a given network address - * (passed in 'nam') is present in thier exports list, returns a pointer - * to struct netcred so that the filesystem can examine it for - * access rights (read/write/etc). - */ -struct netcred * -vfs_export_lookup(mp, nam) - register struct mount *mp; - struct sockaddr *nam; -{ - struct netexport *nep; - register struct netcred *np; - register struct radix_node_head *rnh; - struct sockaddr *saddr; - - nep = mp->mnt_export; - if (nep == NULL) - return (NULL); - np = NULL; - if (mp->mnt_flag & MNT_EXPORTED) { - /* - * Lookup in the export list first. - */ - if (nam != NULL) { - saddr = nam; - rnh = nep->ne_rtable[saddr->sa_family]; - if (rnh != NULL) { - np = (struct netcred *) - (*rnh->rnh_matchaddr)((caddr_t)saddr, - rnh); - if (np && np->netc_rnodes->rn_flags & RNF_ROOT) - np = NULL; - } - } - /* - * If no address match, use the default if it exists. - */ - if (np == NULL && mp->mnt_flag & MNT_DEFEXPORTED) - np = &nep->ne_defexported; - } - return (np); -} - -/* * perform msync on all vnodes under a mount point * the mount point must be locked. */ @@ -3206,29 +2886,3 @@ privcheck: return ((acc_mode & VADMIN) ? EPERM : EACCES); } -/* - * XXX: This comment comes from the deprecated ufs_check_export() - * XXX: and may not entirely apply, but lacking something better: - * This is the generic part of fhtovp called after the underlying - * filesystem has validated the file handle. - * - * Verify that a host should have access to a filesystem. - */ - -int -vfs_stdcheckexp(mp, nam, extflagsp, credanonp) - struct mount *mp; - struct sockaddr *nam; - int *extflagsp; - struct ucred **credanonp; -{ - struct netcred *np; - - np = vfs_export_lookup(mp, nam); - if (np == NULL) - return (EACCES); - *extflagsp = np->netc_exflags; - *credanonp = &np->netc_anon; - return (0); -} - |