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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 1.21 by ats, Sat Jan 10 15:28:03 2004 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream central monitoring system
3	+	* http://www.i-scream.org
4	+	* Copyright (C) 2000-2003 i-scream
5	+	*
6	+	* This program is free software; you can redistribute it and/or
7	+	* modify it under the terms of the GNU General Public License
8	+	* as published by the Free Software Foundation; either version 2
9	+	* of the License, or (at your option) any later version.
10	+	*
11	+	* This program 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
14	+	* GNU General Public License for more details.
15	+	*
16	+	* You should have received a copy of the GNU General Public License
17	+	* along with this program; if not, write to the Free Software
18	+	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19	+	*/
20	+
21	+	#ifdef HAVE_CONFIG_H
22	+	#include "config.h"
23	+	#endif
24	+
25		#include <stdio.h>
26		#include <string.h>
27	+	#include <stdlib.h>
28	+	#include <unistd.h>
29	+	#include <sys/types.h>
30	+	#include <regex.h>
31	+	#ifdef ALLBSD
32	+	#include <fcntl.h>
33	+	#include <kvm.h>
34	+	#endif
35	+	#ifdef NETBSD
36	+	#include <uvm/uvm_extern.h>
37	+	#endif
38
39	+	#include "tools.h"
40	+
41	+	#ifdef SOLARIS
42	+	#include <libdevinfo.h>
43	+	#include <kstat.h>
44	+	#include <unistd.h>
45	+	#include <ctype.h>
46	+	#include <sys/types.h>
47	+	#include <sys/dkio.h>
48	+	#include <sys/stat.h>
49	+	#include <fcntl.h>
50	+	#include <sys/fcntl.h>
51	+	#include <dirent.h>
52	+	#endif
53	+
54	+	#ifdef SOLARIS
55	+	struct map{
56	+	char *bsd;
57	+	char *svr;
58	+
59	+	struct map *next;
60	+	};
61	+	typedef struct map mapping_t;
62	+
63	+	static mapping_t *mapping = NULL;
64	+
65	+	char *get_svr_from_bsd(char *bsd){
66	+	mapping_t *map_ptr;
67	+	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next)
68	+	if(!strcmp(map_ptr->bsd, bsd)) return map_ptr->svr;
69	+
70	+	return bsd;
71	+	}
72	+
73	+	void add_mapping(char *bsd, char *svr){
74	+	mapping_t *map_ptr;
75	+	mapping_t *map_end_ptr;
76	+
77	+	bsd = strdup(bsd);
78	+	svr = strdup(svr);
79	+
80	+	if (mapping == NULL){
81	+	mapping = malloc(sizeof(mapping_t));
82	+	if (mapping == NULL) return;
83	+	map_ptr = mapping;
84	+	}else{
85	+	/* See if its already been added */
86	+	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
87	+	if( (!strcmp(map_ptr->bsd, bsd)) || (!strcmp(map_ptr->svr, svr)) ){
88	+	return;
89	+	}
90	+	map_end_ptr = map_ptr;
91	+	}
92	+
93	+	/* We've reached end of list and not found the entry.. So we need to malloc
94	+	* new mapping_t
95	+	*/
96	+	map_end_ptr->next = malloc(sizeof(mapping_t));
97	+	if (map_end_ptr->next == NULL) return;
98	+	map_ptr = map_end_ptr->next;
99	+	}
100	+
101	+	map_ptr->next = NULL;
102	+	map_ptr->bsd = bsd;
103	+	map_ptr->svr = svr;
104	+
105	+	return;
106	+	}
107	+
108	+	char *read_dir(char *disk_path){
109	+	DIR *dirp;
110	+	struct dirent *dp;
111	+	struct stat stbuf;
112	+	char *svr_name;
113	+	char current_dir[MAXPATHLEN];
114	+	char file_name[MAXPATHLEN];
115	+	char temp_name[MAXPATHLEN];
116	+	char dir_dname[MAXPATHLEN];
117	+	char *dsk_dir;
118	+	int x;
119	+
120	+	dsk_dir = "/dev/osa/dev/dsk";
121	+	strncpy(current_dir, dsk_dir, sizeof current_dir);
122	+	if ((dirp = opendir(current_dir)) == NULL){
123	+	dsk_dir = "/dev/dsk";
124	+	snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
125	+	if ((dirp = opendir(current_dir)) == NULL){
126	+	return NULL;
127	+	}
128	+	}
129	+
130	+	while ((dp = readdir(dirp)) != NULL){
131	+	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
132	+	snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
133	+	stat(dir_dname,&stbuf);
134	+
135	+	if (S_ISBLK(stbuf.st_mode)){
136	+	x = readlink(dir_dname, file_name, sizeof(file_name));
137	+	file_name[x] = '\0';
138	+	if (strcmp(file_name, temp_name) == 0) {
139	+	svr_name = strdup(dp->d_name);
140	+	closedir(dirp);
141	+	return svr_name;
142	+	}
143	+	}
144	+	}
145	+	closedir(dirp);
146	+	return NULL;
147	+	}
148	+
149	+
150	+
151	+	int get_alias(char *alias){
152	+	char file[MAXPATHLEN];
153	+	di_node_t root_node;
154	+	di_node_t node;
155	+	di_minor_t minor = DI_MINOR_NIL;
156	+	char tmpnode[MAXPATHLEN];
157	+	char *phys_path;
158	+	char *minor_name;
159	+	char *value;
160	+	int instance;
161	+	if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
162	+	return 1;
163	+	}
164	+	node = di_drv_first_node(alias, root_node);
165	+	while (node != DI_NODE_NIL) {
166	+	if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
167	+	instance = di_instance(node);
168	+	phys_path = di_devfs_path(node);
169	+	minor_name = di_minor_name(minor);
170	+	strcpy(tmpnode, alias);
171	+	sprintf(tmpnode, "%s%d", tmpnode, instance);
172	+	strlcpy(file, "/devices", sizeof file);
173	+	strlcat(file, phys_path, sizeof file);
174	+	strlcat(file, ":", sizeof file);
175	+	strlcat(file, minor_name, sizeof file);
176	+	value = read_dir(file);
177	+	if (value != NULL){
178	+	add_mapping(tmpnode, value);
179	+	}
180	+	di_devfs_path_free(phys_path);
181	+	node = di_drv_next_node(node);
182	+	}else{
183	+	node = di_drv_next_node(node);
184	+	}
185	+	}
186	+	di_fini(root_node);
187	+	return 0;
188	+	}
189	+
190	+	int build_mapping(){
191	+	char device_name[512];
192	+	int x;
193	+	kstat_ctl_t *kc;
194	+	kstat_t *ksp;
195	+	kstat_io_t kios;
196	+
197	+	if ((kc = kstat_open()) == NULL) {
198	+	return;
199	+	}
200	+
201	+	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
202	+	if (!strcmp(ksp->ks_class, "disk")) {
203	+	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
204	+	/* We dont want metadevices appearing as num_diskio */
205	+	if(strcmp(ksp->ks_module, "md")==0) continue;
206	+	if((kstat_read(kc, ksp, &kios))==-1) continue;
207	+	strncpy(device_name, ksp->ks_name, sizeof device_name);
208	+	for(x=0;x<(sizeof device_name);x++){
209	+	if( isdigit((int)device_name[x]) ) break;
210	+	}
211	+	if(x == sizeof device_name) x--;
212	+	device_name[x] = '\0';
213	+	if((get_alias(device_name)) != 0){
214	+	return 1;
215	+	}
216	+	}
217	+	}
218	+
219	+	return 0;
220	+	}
221	+
222	+	#endif
223	+
224	+
225	+
226		char *f_read_line(FILE *f, const char *string){
227		/* Max line length. 8k should be more than enough */
228		static char line[8192];
#	Line 13 | Line 235 | char *f_read_line(FILE *f, const char *string){
235
236		return NULL;
237		}
238	+
239	+	char *get_string_match(char *line, regmatch_t *match){
240	+	int len=match->rm_eo - match->rm_so;
241	+	char *match_string=malloc(len+1);
242	+
243	+	match_string=strncpy(match_string, line+match->rm_so, len);
244	+	match_string[len]='\0';
245	+
246	+	return match_string;
247	+	}
248	+
249	+
250	+
251	+	#ifndef HAVE_ATOLL
252	+	static long long atoll(const char *s) {
253	+	long long value = 0;
254	+	int isneg = 0;
255	+
256	+	while (*s == ' ' || *s == '\t') {
257	+	s++;
258	+	}
259	+	if (*s == '-') {
260	+	isneg = 1;
261	+	s++;
262	+	}
263	+	while (*s >= '0' && *s <= '9') {
264	+	value = (10 * value) + (*s - '0');
265	+	s++;
266	+	}
267	+	return (isneg ? -value : value);
268	+	}
269	+	#endif
270	+
271	+	#ifndef HAVE_STRLCPY
272	+	/*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */
273	+
274	+	/*
275	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
276	+	*
277	+	* Permission to use, copy, modify, and distribute this software for any
278	+	* purpose with or without fee is hereby granted, provided that the above
279	+	* copyright notice and this permission notice appear in all copies.
280	+	*
281	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
282	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
283	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
284	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
285	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
286	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
287	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
288	+	*/
289	+
290	+	/*
291	+	* Copy src to string dst of size siz.  At most siz-1 characters
292	+	* will be copied.  Always NUL terminates (unless siz == 0).
293	+	* Returns strlen(src); if retval >= siz, truncation occurred.
294	+	*/
295	+	size_t strlcpy(char *dst, const char *src, size_t siz){
296	+	register char *d = dst;
297	+	register const char *s = src;
298	+	register size_t n = siz;
299	+
300	+	/* Copy as many bytes as will fit */
301	+	if (n != 0 && --n != 0) {
302	+	do {
303	+	if ((*d++ = *s++) == 0)
304	+	break;
305	+	} while (--n != 0);
306	+	}
307	+
308	+	/* Not enough room in dst, add NUL and traverse rest of src */
309	+	if (n == 0) {
310	+	if (siz != 0)
311	+	*d = '\0';              /* NUL-terminate dst */
312	+	while (*s++)
313	+	;
314	+	}
315	+
316	+	return(s - src - 1);    /* count does not include NUL */
317	+	}
318	+	#endif
319	+
320	+	#ifndef HAVE_STRLCAT
321	+	/*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */
322	+
323	+	/*
324	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
325	+	*
326	+	* Permission to use, copy, modify, and distribute this software for any
327	+	* purpose with or without fee is hereby granted, provided that the above
328	+	* copyright notice and this permission notice appear in all copies.
329	+	*
330	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
331	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
332	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
333	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
334	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
335	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
336	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
337	+	*/
338	+
339	+	/*
340	+	* Appends src to string dst of size siz (unlike strncat, siz is the
341	+	* full size of dst, not space left).  At most siz-1 characters
342	+	* will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
343	+	* Returns strlen(src) + MIN(siz, strlen(initial dst)).
344	+	* If retval >= siz, truncation occurred.
345	+	*/
346	+	size_t strlcat(char *dst, const char *src, size_t siz){
347	+	register char *d = dst;
348	+	register const char *s = src;
349	+	register size_t n = siz;
350	+	size_t dlen;
351	+
352	+	/* Find the end of dst and adjust bytes left but don't go past end */
353	+	while (n-- != 0 && *d != '\0')
354	+	d++;
355	+	dlen = d - dst;
356	+	n = siz - dlen;
357	+
358	+	if (n == 0)
359	+	return(dlen + strlen(s));
360	+	while (*s != '\0') {
361	+	if (n != 1) {
362	+	*d++ = *s;
363	+	n--;
364	+	}
365	+	s++;
366	+	}
367	+	*d = '\0';
368	+
369	+	return(dlen + (s - src));       /* count does not include NUL */
370	+	}
371	+
372	+	#endif
373	+
374	+	long long get_ll_match(char *line, regmatch_t *match){
375	+	char *ptr;
376	+	long long num;
377	+
378	+	ptr=line+match->rm_so;
379	+	num=atoll(ptr);
380	+
381	+	return num;
382	+	}
383	+
384	+	#ifdef ALLBSD
385	+	kvm_t *get_kvm() {
386	+	static kvm_t *kvmd = NULL;
387	+
388	+	if (kvmd != NULL) {
389	+	return kvmd;
390	+	}
391	+
392	+	kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
393	+	return kvmd;
394	+	}
395	+	#endif
396	+
397	+	#ifdef NETBSD
398	+	struct uvmexp *get_uvmexp() {
399	+	static u_long addr = 0;
400	+	static struct uvmexp uvm;
401	+	kvm_t *kvmd = get_kvm();
402	+
403	+	if (kvmd == NULL) {
404	+	return NULL;
405	+	}
406	+
407	+	if (addr == 0) {
408	+	struct nlist symbols[] = {
409	+	{ "_uvmexp" },
410	+	{ NULL }
411	+	};
412	+
413	+	if (kvm_nlist(kvmd, symbols) != 0) {
414	+	return NULL;
415	+	}
416	+	addr = symbols[0].n_value;
417	+	}
418	+
419	+	if (kvm_read(kvmd, addr, &uvm, sizeof uvm) != sizeof uvm) {
420	+	return NULL;
421	+	}
422	+	return &uvm;
423	+	}
424	+	#endif
425	+
426	+	int statgrab_init(){
427	+	#ifdef ALLBSD
428	+	{
429	+	kvm_t *kvmd = get_kvm();
430	+	if (kvmd == NULL) return 1;
431	+	}
432	+	#endif
433	+	#ifdef NETBSD
434	+	{
435	+	struct uvmexp *uvm = get_uvmexp();
436	+	if (uvm == NULL) return 1;
437	+	}
438	+	#endif
439	+	#ifdef SOLARIS
440	+	/* On solaris 7, this will fail if you are not root. But, everything
441	+	* will still work, just no disk mappings. So we will ignore the exit
442	+	* status of this, and carry on merrily.
443	+	*/
444	+	build_mapping();
445	+	#endif
446	+	return 0;
447	+	}
448	+
449	+	int statgrab_drop_privileges() {
450	+	if (setegid(getgid()) != 0) return -1;
451	+	if (seteuid(getuid()) != 0) return -1;
452	+	return 0;
453	+	}
454	+

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