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root/i-scream/projects/libstatgrab/src/libstatgrab/tools.c

Comparing projects/libstatgrab/src/libstatgrab/tools.c (file contents):
Revision 1.2 by pajs, Wed Mar 5 12:41:19 2003 UTC vs.
Revision 1.36 by ats, Sun Apr 4 23:48:26 2004 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org
4	+	* Copyright (C) 2000-2004 i-scream
5	+	*
6	+	* This library is free software; you can redistribute it and/or
7	+	* modify it under the terms of the GNU Lesser General Public
8	+	* License as published by the Free Software Foundation; either
9	+	* version 2.1 of the License, or (at your option) any later version.
10	+	*
11	+	* This library is distributed in the hope that it will be useful,
12	+	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	+	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14	+	* Lesser General Public License for more details.
15	+	*
16	+	* You should have received a copy of the GNU Lesser General Public
17	+	* License along with this library; if not, write to the Free Software
18	+	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19	+	* 02111-1307 USA
20	+	*
21	+	* $Id$
22	+	*/
23	+
24	+	#ifdef HAVE_CONFIG_H
25	+	#include "config.h"
26	+	#endif
27	+
28		#include <stdio.h>
29		#include <string.h>
30	+	#include <stdlib.h>
31	+	#include <unistd.h>
32	+	#include <sys/types.h>
33	+	#include <regex.h>
34	+	#ifdef ALLBSD
35	+	#include <fcntl.h>
36	+	#endif
37	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
38	+	#include <kvm.h>
39	+	#include <paths.h>
40	+	#endif
41	+	#if defined(NETBSD) || defined(OPENBSD)
42	+	#include <uvm/uvm_extern.h>
43	+	#include <sys/param.h>
44	+	#include <sys/sysctl.h>
45	+	#endif
46
47	+	#include "tools.h"
48	+
49	+	#ifdef SOLARIS
50	+	#ifdef HAVE_LIBDEVINFO_H
51	+	#include <libdevinfo.h>
52	+	#endif
53	+	#include <kstat.h>
54	+	#include <unistd.h>
55	+	#include <ctype.h>
56	+	#include <sys/types.h>
57	+	#include <sys/dkio.h>
58	+	#include <sys/stat.h>
59	+	#include <fcntl.h>
60	+	#include <sys/fcntl.h>
61	+	#include <dirent.h>
62	+	#endif
63	+
64	+	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
65	+	struct map{
66	+	char *bsd;
67	+	char *svr;
68	+
69	+	struct map *next;
70	+	};
71	+	typedef struct map mapping_t;
72	+
73	+	static mapping_t *mapping = NULL;
74	+	#endif
75	+
76	+	#ifdef SOLARIS
77	+	char *get_svr_from_bsd(char *bsd){
78	+	#ifdef HAVE_LIBDEVINFO_H
79	+	mapping_t *map_ptr;
80	+	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next)
81	+	if(!strcmp(map_ptr->bsd, bsd)) return map_ptr->svr;
82	+	#endif
83	+	return bsd;
84	+	}
85	+	#endif
86	+
87	+	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
88	+	void add_mapping(char *bsd, char *svr){
89	+	mapping_t *map_ptr;
90	+	mapping_t *map_end_ptr;
91	+
92	+	bsd = strdup(bsd);
93	+	svr = strdup(svr);
94	+
95	+	if (mapping == NULL){
96	+	mapping = malloc(sizeof(mapping_t));
97	+	if (mapping == NULL) return;
98	+	map_ptr = mapping;
99	+	}else{
100	+	/* See if its already been added */
101	+	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
102	+	if( (!strcmp(map_ptr->bsd, bsd)) || (!strcmp(map_ptr->svr, svr)) ){
103	+	return;
104	+	}
105	+	map_end_ptr = map_ptr;
106	+	}
107	+
108	+	/* We've reached end of list and not found the entry.. So we need to malloc
109	+	* new mapping_t
110	+	*/
111	+	map_end_ptr->next = malloc(sizeof(mapping_t));
112	+	if (map_end_ptr->next == NULL) return;
113	+	map_ptr = map_end_ptr->next;
114	+	}
115	+
116	+	map_ptr->next = NULL;
117	+	map_ptr->bsd = bsd;
118	+	map_ptr->svr = svr;
119	+
120	+	return;
121	+	}
122	+
123	+	char *read_dir(char *disk_path){
124	+	DIR *dirp;
125	+	struct dirent *dp;
126	+	struct stat stbuf;
127	+	char *svr_name;
128	+	char current_dir[MAXPATHLEN];
129	+	char file_name[MAXPATHLEN];
130	+	char temp_name[MAXPATHLEN];
131	+	char dir_dname[MAXPATHLEN];
132	+	char *dsk_dir;
133	+	int x;
134	+
135	+	dsk_dir = "/dev/osa/dev/dsk";
136	+	strncpy(current_dir, dsk_dir, sizeof current_dir);
137	+	if ((dirp = opendir(current_dir)) == NULL){
138	+	dsk_dir = "/dev/dsk";
139	+	snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
140	+	if ((dirp = opendir(current_dir)) == NULL){
141	+	return NULL;
142	+	}
143	+	}
144	+
145	+	while ((dp = readdir(dirp)) != NULL){
146	+	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
147	+	snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
148	+	stat(dir_dname,&stbuf);
149	+
150	+	if (S_ISBLK(stbuf.st_mode)){
151	+	x = readlink(dir_dname, file_name, sizeof(file_name));
152	+	file_name[x] = '\0';
153	+	if (strcmp(file_name, temp_name) == 0) {
154	+	svr_name = strdup(dp->d_name);
155	+	closedir(dirp);
156	+	return svr_name;
157	+	}
158	+	}
159	+	}
160	+	closedir(dirp);
161	+	return NULL;
162	+	}
163	+
164	+
165	+
166	+	int get_alias(char *alias){
167	+	char file[MAXPATHLEN];
168	+	di_node_t root_node;
169	+	di_node_t node;
170	+	di_minor_t minor = DI_MINOR_NIL;
171	+	char tmpnode[MAXPATHLEN];
172	+	char *phys_path;
173	+	char *minor_name;
174	+	char *value;
175	+	int instance;
176	+	if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
177	+	return 1;
178	+	}
179	+	node = di_drv_first_node(alias, root_node);
180	+	while (node != DI_NODE_NIL) {
181	+	if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
182	+	instance = di_instance(node);
183	+	phys_path = di_devfs_path(node);
184	+	minor_name = di_minor_name(minor);
185	+	strcpy(tmpnode, alias);
186	+	sprintf(tmpnode, "%s%d", tmpnode, instance);
187	+	strlcpy(file, "/devices", sizeof file);
188	+	strlcat(file, phys_path, sizeof file);
189	+	strlcat(file, ":", sizeof file);
190	+	strlcat(file, minor_name, sizeof file);
191	+	value = read_dir(file);
192	+	if (value != NULL){
193	+	add_mapping(tmpnode, value);
194	+	}
195	+	di_devfs_path_free(phys_path);
196	+	node = di_drv_next_node(node);
197	+	}else{
198	+	node = di_drv_next_node(node);
199	+	}
200	+	}
201	+	di_fini(root_node);
202	+	return 0;
203	+	}
204	+
205	+
206	+	#define BIG_ENOUGH 512
207	+	int build_mapping(){
208	+	char device_name[BIG_ENOUGH];
209	+	int x;
210	+	kstat_ctl_t *kc;
211	+	kstat_t *ksp;
212	+	kstat_io_t kios;
213	+
214	+	char driver_list[BIG_ENOUGH][BIG_ENOUGH];
215	+	int list_entries = 0;
216	+	int found;
217	+
218	+	if ((kc = kstat_open()) == NULL) {
219	+	return;
220	+	}
221	+
222	+	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
223	+	if (!strcmp(ksp->ks_class, "disk")) {
224	+	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
225	+	/* We dont want metadevices appearing as num_diskio */
226	+	if(strcmp(ksp->ks_module, "md")==0) continue;
227	+	if((kstat_read(kc, ksp, &kios))==-1) continue;
228	+	strncpy(device_name, ksp->ks_name, sizeof device_name);
229	+	for(x=0;x<(sizeof device_name);x++){
230	+	if( isdigit((int)device_name[x]) ) break;
231	+	}
232	+	if(x == sizeof device_name) x--;
233	+	device_name[x] = '\0';
234	+
235	+	/* Check if we've not already looked it up */
236	+	found = 0;
237	+	for(x=0;x<list_entries;x++){
238	+	if (x>=BIG_ENOUGH){
239	+	/* We've got bigger than we thought was massive */
240	+	/* If we hit this.. Make big enough bigger */
241	+	return 1;
242	+	}
243	+	if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
244	+	found = 1;
245	+	break;
246	+	}
247	+	}
248	+
249	+	if(!found){
250	+	if((get_alias(device_name)) != 0){
251	+	return 1;
252	+	}
253	+	strncpy(driver_list[x], device_name, BIG_ENOUGH);
254	+	list_entries++;
255	+	}
256	+	}
257	+	}
258	+
259	+	return 0;
260	+	}
261	+
262	+	#endif
263	+
264	+
265	+
266		char *f_read_line(FILE *f, const char *string){
267		/* Max line length. 8k should be more than enough */
268		static char line[8192];
#	Line 13 | Line 275 | char *f_read_line(FILE *f, const char *string){
275
276		return NULL;
277		}
278	+
279	+	char *get_string_match(char *line, regmatch_t *match){
280	+	int len=match->rm_eo - match->rm_so;
281	+	char *match_string=malloc(len+1);
282	+
283	+	match_string=strncpy(match_string, line+match->rm_so, len);
284	+	match_string[len]='\0';
285	+
286	+	return match_string;
287	+	}
288	+
289	+
290	+
291	+	#ifndef HAVE_ATOLL
292	+	static long long atoll(const char *s) {
293	+	long long value = 0;
294	+	int isneg = 0;
295	+
296	+	while (*s == ' ' || *s == '\t') {
297	+	s++;
298	+	}
299	+	if (*s == '-') {
300	+	isneg = 1;
301	+	s++;
302	+	}
303	+	while (*s >= '0' && *s <= '9') {
304	+	value = (10 * value) + (*s - '0');
305	+	s++;
306	+	}
307	+	return (isneg ? -value : value);
308	+	}
309	+	#endif
310	+
311	+	#ifndef HAVE_STRLCPY
312	+	/*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */
313	+
314	+	/*
315	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
316	+	*
317	+	* Permission to use, copy, modify, and distribute this software for any
318	+	* purpose with or without fee is hereby granted, provided that the above
319	+	* copyright notice and this permission notice appear in all copies.
320	+	*
321	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
322	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
323	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
324	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
325	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
326	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
327	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
328	+	*/
329	+
330	+	/*
331	+	* Copy src to string dst of size siz.  At most siz-1 characters
332	+	* will be copied.  Always NUL terminates (unless siz == 0).
333	+	* Returns strlen(src); if retval >= siz, truncation occurred.
334	+	*/
335	+	size_t strlcpy(char *dst, const char *src, size_t siz){
336	+	register char *d = dst;
337	+	register const char *s = src;
338	+	register size_t n = siz;
339	+
340	+	/* Copy as many bytes as will fit */
341	+	if (n != 0 && --n != 0) {
342	+	do {
343	+	if ((*d++ = *s++) == 0)
344	+	break;
345	+	} while (--n != 0);
346	+	}
347	+
348	+	/* Not enough room in dst, add NUL and traverse rest of src */
349	+	if (n == 0) {
350	+	if (siz != 0)
351	+	*d = '\0';              /* NUL-terminate dst */
352	+	while (*s++)
353	+	;
354	+	}
355	+
356	+	return(s - src - 1);    /* count does not include NUL */
357	+	}
358	+	#endif
359	+
360	+	#ifndef HAVE_STRLCAT
361	+	/*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */
362	+
363	+	/*
364	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
365	+	*
366	+	* Permission to use, copy, modify, and distribute this software for any
367	+	* purpose with or without fee is hereby granted, provided that the above
368	+	* copyright notice and this permission notice appear in all copies.
369	+	*
370	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
371	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
372	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
373	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
374	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
375	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
376	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
377	+	*/
378	+
379	+	/*
380	+	* Appends src to string dst of size siz (unlike strncat, siz is the
381	+	* full size of dst, not space left).  At most siz-1 characters
382	+	* will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
383	+	* Returns strlen(src) + MIN(siz, strlen(initial dst)).
384	+	* If retval >= siz, truncation occurred.
385	+	*/
386	+	size_t strlcat(char *dst, const char *src, size_t siz){
387	+	register char *d = dst;
388	+	register const char *s = src;
389	+	register size_t n = siz;
390	+	size_t dlen;
391	+
392	+	/* Find the end of dst and adjust bytes left but don't go past end */
393	+	while (n-- != 0 && *d != '\0')
394	+	d++;
395	+	dlen = d - dst;
396	+	n = siz - dlen;
397	+
398	+	if (n == 0)
399	+	return(dlen + strlen(s));
400	+	while (*s != '\0') {
401	+	if (n != 1) {
402	+	*d++ = *s;
403	+	n--;
404	+	}
405	+	s++;
406	+	}
407	+	*d = '\0';
408	+
409	+	return(dlen + (s - src));       /* count does not include NUL */
410	+	}
411	+
412	+	#endif
413	+
414	+	long long get_ll_match(char *line, regmatch_t *match){
415	+	char *ptr;
416	+	long long num;
417	+
418	+	ptr=line+match->rm_so;
419	+	num=atoll(ptr);
420	+
421	+	return num;
422	+	}
423	+
424	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
425	+	kvm_t *get_kvm() {
426	+	static kvm_t *kvmd = NULL;
427	+
428	+	if (kvmd != NULL) {
429	+	return kvmd;
430	+	}
431	+
432	+	kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
433	+	return kvmd;
434	+	}
435	+
436	+	/* Can't think of a better name for this function */
437	+	kvm_t *get_kvm2() {
438	+	static kvm_t *kvmd2 = NULL;
439	+
440	+	if (kvmd2 != NULL) {
441	+	return kvmd2;
442	+	}
443	+
444	+	kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
445	+	return kvmd2;
446	+	}
447	+	#endif
448	+
449	+	#if defined(NETBSD) || defined(OPENBSD)
450	+	struct uvmexp *get_uvmexp() {
451	+	int mib[2];
452	+	size_t size;
453	+	static struct uvmexp *uvm = NULL;
454	+	struct uvmexp *new;
455	+
456	+	mib[0] = CTL_VM;
457	+	mib[1] = VM_UVMEXP;
458	+
459	+	if (sysctl(mib, 2, NULL, &size, NULL, 0) < 0) {
460	+	return NULL;
461	+	}
462	+
463	+	new = realloc(uvm, size);
464	+	if (new == NULL) {
465	+	return NULL;
466	+	}
467	+	uvm = new;
468	+
469	+	if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
470	+	return NULL;
471	+	}
472	+
473	+	return uvm;
474	+	}
475	+	#endif
476	+
477	+	int statgrab_init(){
478	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
479	+	{
480	+	kvm_t *kvmd = get_kvm();
481	+	if (kvmd == NULL) return 1;
482	+	}
483	+	{
484	+	kvm_t *kvmd2 = get_kvm2();
485	+	if (kvmd2 == NULL) return 1;
486	+	}
487	+	#endif
488	+	#if defined(NETBSD) || defined(OPENBSD)
489	+	{
490	+	/* This should always succeed, but it seems that on some
491	+	* versions of NetBSD the first call to get_uvmexp will return
492	+	* a non-filled-in structure; this is a workaround for that.
493	+	*/
494	+	struct uvmexp *uvm = get_uvmexp();
495	+	if (uvm == NULL) return 1;
496	+	}
497	+	#endif
498	+	#ifdef SOLARIS
499	+	/* On solaris 7, this will fail if you are not root. But, everything
500	+	* will still work, just no disk mappings. So we will ignore the exit
501	+	* status of this, and carry on merrily.
502	+	*/
503	+	#ifdef HAVE_LIBDEVINFO_H
504	+	build_mapping();
505	+	#endif
506	+	#endif
507	+	return 0;
508	+	}
509	+
510	+	int statgrab_drop_privileges() {
511	+	if (setegid(getgid()) != 0) return -1;
512	+	if (seteuid(getuid()) != 0) return -1;
513	+	return 0;
514	+	}
515	+

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