diff options
Diffstat (limited to 'usr/src/cmd/mdb/common/modules/genunix/group.c')
| -rw-r--r-- | usr/src/cmd/mdb/common/modules/genunix/group.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/usr/src/cmd/mdb/common/modules/genunix/group.c b/usr/src/cmd/mdb/common/modules/genunix/group.c new file mode 100644 index 0000000000..6040ba4939 --- /dev/null +++ b/usr/src/cmd/mdb/common/modules/genunix/group.c @@ -0,0 +1,179 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ + +/* + * Copyright 2007 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +/* + * Display group information and walk all elements of a group + */ + +#include "group.h" + +#include <mdb/mdb_modapi.h> +#include <sys/group.h> + +/* + * Display group information + */ + +/* ARGSUSED */ +int +group(uintptr_t addr, uint_t flags, int argc, const mdb_arg_t *argv) +{ + group_t group; + int opt_q = 0; /* display only address. */ + + /* Should provide an address */ + if (!(flags & DCMD_ADDRSPEC)) + return (DCMD_USAGE); + + if (mdb_getopts(argc, argv, + 'q', MDB_OPT_SETBITS, TRUE, &opt_q, + NULL) != argc) + return (DCMD_USAGE); + + if (flags & DCMD_PIPE_OUT) + opt_q = B_TRUE; + + if (DCMD_HDRSPEC(flags) && !opt_q) { + mdb_printf("%?s %6s %9s %?s\n", + "ADDR", + "SIZE", + "CAPACITY", + "SET"); + } + + if (mdb_vread(&group, sizeof (struct group), addr) == -1) { + mdb_warn("unable to read 'group' at %p", addr); + return (DCMD_ERR); + } + + if (opt_q) { + mdb_printf("%0?p\n", addr); + return (DCMD_OK); + } + + mdb_printf("%?p %6d %9d %?p\n", + addr, group.grp_size, group.grp_capacity, group.grp_set); + + return (DCMD_OK); +} + +/* + * Walk all elements in the group set. + */ + +typedef struct group_walk { + uintptr_t *gw_set; + int gw_size; + int gw_pos; + int gw_initialized; +} group_walk_t; + + +/* + * Initialize the walk structure with the copy of a group set, its size and the + * initial pointer position. + */ +int +group_walk_init(mdb_walk_state_t *wsp) +{ + group_walk_t *gw; + group_t group; + + gw = mdb_alloc(sizeof (group_walk_t), UM_SLEEP | UM_GC); + + if (mdb_vread(&group, sizeof (struct group), wsp->walk_addr) == -1) { + mdb_warn("couldn't read 'group' at %p", wsp->walk_addr); + return (WALK_ERR); + } + + gw->gw_size = group.grp_size; + gw->gw_initialized = 0; + gw->gw_pos = 0; + + if (gw->gw_size < 0) { + mdb_warn("invalid group at %p", wsp->walk_addr); + return (WALK_ERR); + } + + if (gw->gw_size == 0) + return (WALK_DONE); + + /* + * Allocate space for the set and copy all set entries. + */ + gw->gw_set = mdb_alloc(group.grp_size * sizeof (uintptr_t), + UM_SLEEP | UM_GC); + + if (mdb_vread(gw->gw_set, group.grp_size * sizeof (uintptr_t), + (uintptr_t)group.grp_set) == -1) { + mdb_warn("couldn't read 'group set' at %p", group.grp_set); + return (WALK_ERR); + } + + wsp->walk_data = gw; + wsp->walk_addr = gw->gw_set[0]; + gw->gw_pos = 0; + + return (WALK_NEXT); +} + +/* + * Print element of the set and advance the pointer. + */ +int +group_walk_step(mdb_walk_state_t *wsp) +{ + group_walk_t *gw = (group_walk_t *)wsp->walk_data; + int status; + + /* + * Already visited all valid elements, nothing else to do. + */ + if (gw->gw_size < 0) + return (WALK_DONE); + + /* + * Print non-NULL elements + */ + status = wsp->walk_addr == NULL ? + WALK_NEXT : + wsp->walk_callback(wsp->walk_addr, wsp->walk_data, + wsp->walk_cbdata); + + /* + * Adjust walk_addr to point to the next element + */ + gw->gw_size--; + + if (gw->gw_size > 0) + wsp->walk_addr = gw->gw_set[++gw->gw_pos]; + else + status = WALK_DONE; + + return (status); +} |