1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright (c) 1994, by Sun Microsytems, Inc.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28/*
29 * Interfaces that deal with loadobjects (shared objects) in target
30 */
31
32#include <stdlib.h>
33#include <stdio.h>
34#include <errno.h>
35#include <string.h>
36#include <link.h>
37#include <unistd.h>
38#include <sys/procfs.h>
39
40#include "tnfctl.h"
41#include "prb_proc_int.h"
42#include "dbg.h"
43
44/*
45 * iterate over all loadobjects calling the callback function "obj_func"
46 * for every loadobject with information about the loadobject.
47 */
48prb_status_t
49prb_loadobj_iter(prb_proc_ctl_t *proc_p, prb_loadobj_f *obj_func, void *cd)
50{
51	prb_status_t	prbstat;
52	Elf3264_Dyn	dentry;
53	struct r_debug	r_dbg;
54	uintptr_t	lmapaddr;
55	struct link_map lmap;
56	prb_loadobj_t	loadobj;
57	int		retval = 0;
58
59	DBG_TNF_PROBE_0(prb_loadobj_iter_start, "libtnfctl",
60			"start prb_loadobj_iter; sunw%verbosity 1");
61
62	if (proc_p->dbgaddr == 0) {
63		DBG((void) fprintf(stderr,
64			"prb_loadobj_iter: dbgaddr not set\n"));
65		return (PRB_STATUS_BADARG);
66	}
67
68	prbstat = prb_proc_read(proc_p, proc_p->dbgaddr, &dentry,
69				sizeof (dentry));
70	if (prbstat || !dentry.d_un.d_ptr) {
71		DBG((void) fprintf(stderr,
72			"prb_lmap_update: error in d_un.d_ptr\n"));
73		return (prbstat);
74	}
75	/* read in the debug struct that it points to */
76	prbstat = prb_proc_read(proc_p, dentry.d_un.d_ptr,
77		&r_dbg, sizeof (r_dbg));
78	if (prbstat)
79		return (prbstat);
80
81	DBG_TNF_PROBE_1(prb_loadobj_iter_1, "libtnfctl", "sunw%verbosity 1",
82		tnf_string, link_map_state,
83		(r_dbg.r_state == RT_CONSISTENT) ? "RT_CONSISTENT" :
84			(r_dbg.r_state == RT_ADD) ? "RT_ADD" : "RT_DELETE");
85
86	/* if the link map is not consistent, bail now */
87	if (r_dbg.r_state != RT_CONSISTENT)
88		return (PRB_STATUS_BADLMAPSTATE);
89
90	lmap.l_next = NULL;			/* makes lint happy */
91
92	for (lmapaddr = (uintptr_t) r_dbg.r_map; lmapaddr;
93		lmapaddr = (uintptr_t) lmap.l_next) {
94
95		prbstat = prb_proc_read(proc_p, lmapaddr, &lmap, sizeof (lmap));
96		if (prbstat)
97			return (prbstat);
98
99		loadobj.text_base = lmap.l_addr;
100		loadobj.data_base = lmap.l_addr;
101		loadobj.objname = NULL;
102		/*
103		 * client of this interface should deal with -1 for objfd,
104		 * so no error checking is needed on this ioctl
105		 */
106		loadobj.objfd = ioctl(proc_p->procfd, PIOCOPENM, &lmap.l_addr);
107
108		(void) prb_proc_readstr(proc_p, (uintptr_t) lmap.l_name,
109						&loadobj.objname);
110		retval = obj_func(proc_p, &loadobj, cd);
111		if (loadobj.objname)
112			free((char *)loadobj.objname);
113		if (loadobj.objfd != -1)
114			close(loadobj.objfd);
115		/* check for error */
116		if (retval == 1)
117			return (PRB_STATUS_BADARG);
118	}
119
120	DBG_TNF_PROBE_0(prb_loadobj_iter_end, "libtnfctl",
121			"end prb_loadobj_iter; sunw%verbosity 1");
122	return (PRB_STATUS_OK);
123}
124
125/*
126 * Return a fd for the main executable and also the address of where
127 * it was mapped.
128 */
129prb_status_t
130prb_mainobj_get(prb_proc_ctl_t *proc_p, int *objfd, uintptr_t *baseaddr)
131{
132	int		procfd;
133	int		retfd;
134
135
136	procfd = proc_p->procfd;
137again:
138	retfd = ioctl(procfd, PIOCOPENM, 0);
139	if (retfd < 0) {
140		if (errno == EINTR)
141			goto again;
142		DBG((void) fprintf(stderr,
143			"prb_mainobj_get: PIOCOPENM failed: %s\n",
144			strerror(errno)));
145		return (prb_status_map(errno));
146	}
147	*objfd = retfd;
148	*baseaddr = 0;
149
150	return (PRB_STATUS_OK);
151}
152