14bff34e3Sthurlow /*
24bff34e3Sthurlow * CDDL HEADER START
34bff34e3Sthurlow *
44bff34e3Sthurlow * The contents of this file are subject to the terms of the
54bff34e3Sthurlow * Common Development and Distribution License (the "License").
64bff34e3Sthurlow * You may not use this file except in compliance with the License.
74bff34e3Sthurlow *
84bff34e3Sthurlow * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
94bff34e3Sthurlow * or http://www.opensolaris.org/os/licensing.
104bff34e3Sthurlow * See the License for the specific language governing permissions
114bff34e3Sthurlow * and limitations under the License.
124bff34e3Sthurlow *
134bff34e3Sthurlow * When distributing Covered Code, include this CDDL HEADER in each
144bff34e3Sthurlow * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
154bff34e3Sthurlow * If applicable, add the following below this CDDL HEADER, with the
164bff34e3Sthurlow * fields enclosed by brackets "[]" replaced with your own identifying
174bff34e3Sthurlow * information: Portions Copyright [yyyy] [name of copyright owner]
184bff34e3Sthurlow *
194bff34e3Sthurlow * CDDL HEADER END
204bff34e3Sthurlow */
214bff34e3Sthurlow
224bff34e3Sthurlow /*
23*430b4c46SGordon Ross * Copyright 2011 Nexenta Systems, Inc. All rights reserved.
2402d09e03SGordon Ross * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
254bff34e3Sthurlow * Use is subject to license terms.
264bff34e3Sthurlow */
274bff34e3Sthurlow
284bff34e3Sthurlow #include <sys/mdb_modapi.h>
294bff34e3Sthurlow #include <sys/types.h>
304bff34e3Sthurlow #include <sys/refstr_impl.h>
314bff34e3Sthurlow #include <sys/vnode.h>
324bff34e3Sthurlow #include <sys/vfs.h>
334bff34e3Sthurlow
34*430b4c46SGordon Ross #include <smbfs/smbfs.h>
35*430b4c46SGordon Ross #include <smbfs/smbfs_node.h>
364bff34e3Sthurlow
374bff34e3Sthurlow #define OPT_VERBOSE 0x0001 /* Be [-v]erbose in dcmd's */
384bff34e3Sthurlow
394bff34e3Sthurlow /*
404bff34e3Sthurlow * This macro lets us easily use both sizeof (typename)
414bff34e3Sthurlow * and the string-ified typename for the error message.
424bff34e3Sthurlow */
434bff34e3Sthurlow #define SMBFS_OBJ_FETCH(obj_addr, obj_type, dest, err) \
444bff34e3Sthurlow if (mdb_vread(dest, sizeof (obj_type), ((uintptr_t)obj_addr)) \
454bff34e3Sthurlow != sizeof (obj_type)) { \
464bff34e3Sthurlow mdb_warn("error reading "#obj_type" at %p", obj_addr); \
474bff34e3Sthurlow return (err); \
484bff34e3Sthurlow }
494bff34e3Sthurlow
504bff34e3Sthurlow /*
514bff34e3Sthurlow * We need to read in a private copy
524bff34e3Sthurlow * of every string we want to print out.
534bff34e3Sthurlow */
544bff34e3Sthurlow void
print_str(uintptr_t addr)554bff34e3Sthurlow print_str(uintptr_t addr)
564bff34e3Sthurlow {
574bff34e3Sthurlow char buf[64];
584bff34e3Sthurlow int len, mx = sizeof (buf) - 4;
594bff34e3Sthurlow
604bff34e3Sthurlow if ((len = mdb_readstr(buf, sizeof (buf), addr)) <= 0) {
614bff34e3Sthurlow mdb_printf(" (%p)", addr);
624bff34e3Sthurlow } else {
634bff34e3Sthurlow if (len > mx)
644bff34e3Sthurlow strcpy(&buf[mx], "...");
654bff34e3Sthurlow mdb_printf(" %s", buf);
664bff34e3Sthurlow }
674bff34e3Sthurlow }
684bff34e3Sthurlow
694bff34e3Sthurlow /*
704bff34e3Sthurlow * Dcmd (and callback function) to print a summary of
714bff34e3Sthurlow * all "smbfs" entries in the VFS list.
724bff34e3Sthurlow */
734bff34e3Sthurlow
744bff34e3Sthurlow typedef struct smbfs_vfs_cbdata {
754bff34e3Sthurlow int flags;
764bff34e3Sthurlow int printed_header;
774bff34e3Sthurlow uintptr_t vfsops; /* filter by vfs ops pointer */
784bff34e3Sthurlow smbmntinfo_t smi; /* scratch space for smbfs_vfs_cb */
794bff34e3Sthurlow } smbfs_vfs_cbdata_t;
804bff34e3Sthurlow
814bff34e3Sthurlow int
smbfs_vfs_cb(uintptr_t addr,const void * data,void * arg)824bff34e3Sthurlow smbfs_vfs_cb(uintptr_t addr, const void *data, void *arg)
834bff34e3Sthurlow {
844bff34e3Sthurlow const vfs_t *vfs = data;
854bff34e3Sthurlow smbfs_vfs_cbdata_t *cbd = arg;
864bff34e3Sthurlow uintptr_t ta;
874bff34e3Sthurlow
884bff34e3Sthurlow /* Filter by matching smbfs ops vector. */
894bff34e3Sthurlow if (cbd->vfsops && cbd->vfsops != (uintptr_t)vfs->vfs_op) {
904bff34e3Sthurlow return (WALK_NEXT);
914bff34e3Sthurlow }
924bff34e3Sthurlow
934bff34e3Sthurlow if (cbd->printed_header == 0) {
944bff34e3Sthurlow cbd->printed_header = 1;
954bff34e3Sthurlow mdb_printf("// vfs_t smbmntinfo_t mnt_path\n");
964bff34e3Sthurlow }
974bff34e3Sthurlow
984bff34e3Sthurlow mdb_printf(" %-p", addr); /* vfs_t */
994bff34e3Sthurlow mdb_printf(" %-p", (uintptr_t)vfs->vfs_data);
1004bff34e3Sthurlow /*
1014bff34e3Sthurlow * Note: vfs_mntpt is a refstr_t.
1024bff34e3Sthurlow * Advance to string member.
1034bff34e3Sthurlow */
1044bff34e3Sthurlow ta = (uintptr_t)vfs->vfs_mntpt;
1054bff34e3Sthurlow ta += OFFSETOF(struct refstr, rs_string);
1064bff34e3Sthurlow print_str(ta);
1074bff34e3Sthurlow mdb_printf("\n");
1084bff34e3Sthurlow
1094bff34e3Sthurlow if (cbd->flags & OPT_VERBOSE) {
1104bff34e3Sthurlow mdb_inc_indent(2);
1114bff34e3Sthurlow /* Don't fail the walk if this fails. */
1124bff34e3Sthurlow if (mdb_vread(&cbd->smi, sizeof (cbd->smi),
1134bff34e3Sthurlow (uintptr_t)vfs->vfs_data) == -1) {
1144bff34e3Sthurlow mdb_warn("error reading smbmntinfo_t at %p",
1154bff34e3Sthurlow (uintptr_t)vfs->vfs_data);
1164bff34e3Sthurlow } else {
1174bff34e3Sthurlow /* Interesting parts of smbmntinfo_t */
1184bff34e3Sthurlow mdb_printf("smi_share: %p, smi_root: %p\n",
1194bff34e3Sthurlow cbd->smi.smi_share, cbd->smi.smi_root);
1204bff34e3Sthurlow }
1214bff34e3Sthurlow mdb_dec_indent(2);
1224bff34e3Sthurlow }
1234bff34e3Sthurlow
1244bff34e3Sthurlow return (WALK_NEXT);
1254bff34e3Sthurlow }
1264bff34e3Sthurlow
1274bff34e3Sthurlow int
smbfs_vfs_dcmd(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)1284bff34e3Sthurlow smbfs_vfs_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
1294bff34e3Sthurlow {
1304bff34e3Sthurlow smbfs_vfs_cbdata_t *cbd;
1314bff34e3Sthurlow vfs_t *vfs;
1324bff34e3Sthurlow
1334bff34e3Sthurlow cbd = mdb_zalloc(sizeof (*cbd), UM_SLEEP | UM_GC);
1344bff34e3Sthurlow
1354bff34e3Sthurlow /*
1364bff34e3Sthurlow * Get the ops address here, so things work
1374bff34e3Sthurlow * even if the smbfs module is loaded later
1384bff34e3Sthurlow * than this mdb module.
1394bff34e3Sthurlow */
1404bff34e3Sthurlow if (mdb_readvar(&cbd->vfsops, "smbfs_vfsops") == -1) {
1414bff34e3Sthurlow mdb_warn("failed to find 'smbfs_vfsops'\n");
1424bff34e3Sthurlow return (DCMD_ERR);
1434bff34e3Sthurlow }
1444bff34e3Sthurlow
1454bff34e3Sthurlow if (mdb_getopts(argc, argv,
1464bff34e3Sthurlow 'v', MDB_OPT_SETBITS, OPT_VERBOSE, &cbd->flags,
1474bff34e3Sthurlow NULL) != argc) {
1484bff34e3Sthurlow return (DCMD_USAGE);
1494bff34e3Sthurlow }
1504bff34e3Sthurlow
1514bff34e3Sthurlow if (!(flags & DCMD_ADDRSPEC)) {
1524bff34e3Sthurlow if (mdb_walk("genunix`vfs", smbfs_vfs_cb, cbd)
1534bff34e3Sthurlow == -1) {
1544bff34e3Sthurlow mdb_warn("can't walk smbfs vfs");
1554bff34e3Sthurlow return (DCMD_ERR);
1564bff34e3Sthurlow }
1574bff34e3Sthurlow return (DCMD_OK);
1584bff34e3Sthurlow }
1594bff34e3Sthurlow
1604bff34e3Sthurlow vfs = mdb_alloc(sizeof (*vfs), UM_SLEEP | UM_GC);
1614bff34e3Sthurlow SMBFS_OBJ_FETCH(addr, vfs_t, vfs, DCMD_ERR);
1624bff34e3Sthurlow smbfs_vfs_cb(addr, vfs, cbd);
1634bff34e3Sthurlow return (DCMD_OK);
1644bff34e3Sthurlow }
1654bff34e3Sthurlow
1664bff34e3Sthurlow void
smbfs_vfs_help(void)1674bff34e3Sthurlow smbfs_vfs_help(void)
1684bff34e3Sthurlow {
1694bff34e3Sthurlow mdb_printf(
1704bff34e3Sthurlow "Display addresses of the mounted smbfs structures\n"
1714bff34e3Sthurlow "and the pathname of the mountpoint\n"
1724bff34e3Sthurlow "\nOptions:\n"
1734bff34e3Sthurlow " -v display details of the smbmntinfo\n");
1744bff34e3Sthurlow }
1754bff34e3Sthurlow
1764bff34e3Sthurlow /*
1774bff34e3Sthurlow * Dcmd (and callback function) to print a summary of
17802d09e03SGordon Ross * all smbnodes in the node "hash" (cache) AVL tree.
1794bff34e3Sthurlow */
1804bff34e3Sthurlow
18102d09e03SGordon Ross typedef struct smbfs_node_cbdata {
1824bff34e3Sthurlow int flags;
1834bff34e3Sthurlow int printed_header;
18402d09e03SGordon Ross vnode_t vn;
18502d09e03SGordon Ross } smbfs_node_cbdata_t;
1864bff34e3Sthurlow
1874bff34e3Sthurlow int
smbfs_node_cb(uintptr_t addr,const void * data,void * arg)18802d09e03SGordon Ross smbfs_node_cb(uintptr_t addr, const void *data, void *arg)
1894bff34e3Sthurlow {
1904bff34e3Sthurlow const smbnode_t *np = data;
19102d09e03SGordon Ross smbfs_node_cbdata_t *cbd = arg;
1924bff34e3Sthurlow
1934bff34e3Sthurlow if (cbd->printed_header == 0) {
1944bff34e3Sthurlow cbd->printed_header = 1;
19502d09e03SGordon Ross mdb_printf("// vnode smbnode rpath\n");
1964bff34e3Sthurlow }
1974bff34e3Sthurlow
1984bff34e3Sthurlow mdb_printf(" %-p", (uintptr_t)np->r_vnode);
19902d09e03SGordon Ross mdb_printf(" %-p", addr); /* smbnode */
2004bff34e3Sthurlow print_str((uintptr_t)np->n_rpath);
2014bff34e3Sthurlow mdb_printf("\n");
2024bff34e3Sthurlow
2034bff34e3Sthurlow if (cbd->flags & OPT_VERBOSE) {
2044bff34e3Sthurlow mdb_inc_indent(2);
2054bff34e3Sthurlow /* Don't fail the walk if this fails. */
2064bff34e3Sthurlow if (mdb_vread(&cbd->vn, sizeof (cbd->vn),
2074bff34e3Sthurlow (uintptr_t)np->r_vnode) == -1) {
2084bff34e3Sthurlow mdb_warn("error reading vnode_t at %p",
2094bff34e3Sthurlow (uintptr_t)np->r_vnode);
2104bff34e3Sthurlow } else {
2114bff34e3Sthurlow /* Interesting parts of vnode_t */
21202d09e03SGordon Ross mdb_printf("v_type=%d v_count=%d",
21302d09e03SGordon Ross cbd->vn.v_type, cbd->vn.v_count);
2144bff34e3Sthurlow mdb_printf("\n");
2154bff34e3Sthurlow }
2164bff34e3Sthurlow mdb_dec_indent(2);
2174bff34e3Sthurlow }
2184bff34e3Sthurlow
2194bff34e3Sthurlow return (WALK_NEXT);
2204bff34e3Sthurlow }
2214bff34e3Sthurlow
2224bff34e3Sthurlow int
smbfs_node_dcmd(uintptr_t addr,uint_t flags,int argc,const mdb_arg_t * argv)22302d09e03SGordon Ross smbfs_node_dcmd(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv)
2244bff34e3Sthurlow {
22502d09e03SGordon Ross smbfs_node_cbdata_t *cbd;
2264bff34e3Sthurlow
2274bff34e3Sthurlow cbd = mdb_zalloc(sizeof (*cbd), UM_SLEEP | UM_GC);
2284bff34e3Sthurlow
2294bff34e3Sthurlow if (mdb_getopts(argc, argv,
2304bff34e3Sthurlow 'v', MDB_OPT_SETBITS, OPT_VERBOSE, &cbd->flags,
23102d09e03SGordon Ross NULL) != argc) {
2324bff34e3Sthurlow return (DCMD_USAGE);
2334bff34e3Sthurlow }
2344bff34e3Sthurlow
2354bff34e3Sthurlow if (!(flags & DCMD_ADDRSPEC)) {
23602d09e03SGordon Ross mdb_warn("expect an smbmntinfo_t addr");
23702d09e03SGordon Ross return (DCMD_USAGE);
23802d09e03SGordon Ross }
23902d09e03SGordon Ross addr += OFFSETOF(smbmntinfo_t, smi_hash_avl);
24002d09e03SGordon Ross
24102d09e03SGordon Ross if (mdb_pwalk("genunix`avl", smbfs_node_cb, cbd, addr) == -1) {
24202d09e03SGordon Ross mdb_warn("cannot walk smbfs nodes");
2434bff34e3Sthurlow return (DCMD_ERR);
2444bff34e3Sthurlow }
2454bff34e3Sthurlow
2464bff34e3Sthurlow return (DCMD_OK);
2474bff34e3Sthurlow }
2484bff34e3Sthurlow
2494bff34e3Sthurlow void
smbfs_node_help(void)25002d09e03SGordon Ross smbfs_node_help(void)
2514bff34e3Sthurlow {
2524bff34e3Sthurlow mdb_printf("Options:\n"
2534bff34e3Sthurlow " -v be verbose when displaying smbnodes\n");
2544bff34e3Sthurlow }
2554bff34e3Sthurlow
2564bff34e3Sthurlow static const mdb_dcmd_t dcmds[] = {
25702d09e03SGordon Ross {
25802d09e03SGordon Ross "smbfs_vfs", "?[-v]",
2594bff34e3Sthurlow "show smbfs-mounted vfs structs",
26002d09e03SGordon Ross smbfs_vfs_dcmd, smbfs_vfs_help
26102d09e03SGordon Ross },
26202d09e03SGordon Ross {
26302d09e03SGordon Ross "smbfs_node", "?[-v]",
26402d09e03SGordon Ross "given an smbmntinfo_t, list smbnodes",
26502d09e03SGordon Ross smbfs_node_dcmd, smbfs_node_help
26602d09e03SGordon Ross },
2674bff34e3Sthurlow {NULL}
2684bff34e3Sthurlow };
2694bff34e3Sthurlow
2704bff34e3Sthurlow static const mdb_walker_t walkers[] = {
2714bff34e3Sthurlow {NULL}
2724bff34e3Sthurlow };
2734bff34e3Sthurlow
2744bff34e3Sthurlow static const mdb_modinfo_t modinfo = {
2754bff34e3Sthurlow MDB_API_VERSION,
2764bff34e3Sthurlow dcmds,
2774bff34e3Sthurlow walkers
2784bff34e3Sthurlow };
2794bff34e3Sthurlow
2804bff34e3Sthurlow const mdb_modinfo_t *
_mdb_init(void)2814bff34e3Sthurlow _mdb_init(void)
2824bff34e3Sthurlow {
2834bff34e3Sthurlow return (&modinfo);
2844bff34e3Sthurlow }
285