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

Comparing projects/libstatgrab/src/libstatgrab/tools.c (file contents):
Revision 1.5 by tdb, Wed Apr 9 21:01:53 2003 UTC vs.
Revision 1.56 by ats, Sun Jul 18 21:30:12 2004 UTC

#	Line 1 | Line 1
1	<	/*
2	<	* i-scream central monitoring system
3	<	* http://www.i-scream.org.uk
4	<	* Copyright (C) 2000-2002 i-scream
1	>	/*
2	>	* i-scream libstatgrab
3	>	* http://www.i-scream.org
4	>	* Copyright (C) 2000-2004 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.
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 program is distributed in the hope that it will be useful,
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
14	<	* GNU General Public License for more details.
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 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.
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
#	Line 25 | Line 28
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>
33	>	#ifdef ALLBSD
34	>	#include <fcntl.h>
35	>	#endif
36	>	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
37	>	#include <kvm.h>
38	>	#include <paths.h>
39	>	#endif
40	>	#if defined(NETBSD) || defined(OPENBSD)
41	>	#include <uvm/uvm_extern.h>
42	>	#include <sys/param.h>
43	>	#include <sys/sysctl.h>
44	>	#endif
45
46	<	char *f_read_line(FILE *f, const char *string){
46	>	#include "tools.h"
47	>	#include "statgrab.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	>	const char *sg_get_svr_from_bsd(const 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	>	static void add_mapping(char *bsd, char *svr){
89	>	mapping_t *map_ptr;
90	>	mapping_t *map_end_ptr;
91	>
92	>	if (mapping == NULL){
93	>	mapping = sg_malloc(sizeof(mapping_t));
94	>	if (mapping == NULL) return;
95	>	map_ptr = mapping;
96	>	}else{
97	>	/* See if its already been added */
98	>	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
99	>	if( (!strcmp(map_ptr->bsd, bsd)) || (!strcmp(map_ptr->svr, svr)) ){
100	>	return;
101	>	}
102	>	map_end_ptr = map_ptr;
103	>	}
104	>
105	>	/* We've reached end of list and not found the entry.. So we need to malloc
106	>	* new mapping_t
107	>	*/
108	>	map_end_ptr->next = sg_malloc(sizeof(mapping_t));
109	>	if (map_end_ptr->next == NULL) return;
110	>	map_ptr = map_end_ptr->next;
111	>	}
112	>
113	>	map_ptr->next = NULL;
114	>	map_ptr->bsd = NULL;
115	>	map_ptr->svr = NULL;
116	>	if (sg_update_string(&map_ptr->bsd, bsd) < 0
117	>	|| sg_update_string(&map_ptr->svr, svr) < 0) {
118	>	return;
119	>	}
120	>
121	>	return;
122	>	}
123	>
124	>
125	>	static char *read_dir(char *disk_path){
126	>	DIR *dirp;
127	>	struct dirent *dp;
128	>	struct stat stbuf;
129	>	char *svr_name = NULL;
130	>	char current_dir[MAXPATHLEN];
131	>	char file_name[MAXPATHLEN];
132	>	char temp_name[MAXPATHLEN];
133	>	char dir_dname[MAXPATHLEN];
134	>	char *dsk_dir;
135	>	int x;
136	>
137	>	dsk_dir = "/dev/osa/dev/dsk";
138	>	strncpy(current_dir, dsk_dir, sizeof current_dir);
139	>	if ((dirp = opendir(current_dir)) == NULL){
140	>	dsk_dir = "/dev/dsk";
141	>	snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
142	>	if ((dirp = opendir(current_dir)) == NULL){
143	>	return NULL;
144	>	}
145	>	}
146	>
147	>	while ((dp = readdir(dirp)) != NULL){
148	>	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
149	>	snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
150	>	stat(dir_dname,&stbuf);
151	>
152	>	if (S_ISBLK(stbuf.st_mode)){
153	>	x = readlink(dir_dname, file_name, sizeof(file_name));
154	>	file_name[x] = '\0';
155	>	if (strcmp(file_name, temp_name) == 0) {
156	>	if (sg_update_string(&svr_name,
157	>	dp->d_name) < 0) {
158	>	return NULL;
159	>	}
160	>	closedir(dirp);
161	>	return svr_name;
162	>	}
163	>	}
164	>	}
165	>	closedir(dirp);
166	>	return NULL;
167	>	}
168	>
169	>
170	>	static int get_alias(char *alias){
171	>	char file[MAXPATHLEN];
172	>	di_node_t root_node;
173	>	di_node_t node;
174	>	di_minor_t minor = DI_MINOR_NIL;
175	>	char tmpnode[MAXPATHLEN];
176	>	char *phys_path;
177	>	char *minor_name;
178	>	char *value;
179	>	int instance;
180	>	if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
181	>	return -1;
182	>	}
183	>	node = di_drv_first_node(alias, root_node);
184	>	while (node != DI_NODE_NIL) {
185	>	if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
186	>	instance = di_instance(node);
187	>	phys_path = di_devfs_path(node);
188	>	minor_name = di_minor_name(minor);
189	>	strcpy(tmpnode, alias);
190	>	sprintf(tmpnode, "%s%d", tmpnode, instance);
191	>	sg_strlcpy(file, "/devices", sizeof file);
192	>	sg_strlcat(file, phys_path, sizeof file);
193	>	sg_strlcat(file, ":", sizeof file);
194	>	sg_strlcat(file, minor_name, sizeof file);
195	>	value = read_dir(file);
196	>	if (value != NULL){
197	>	add_mapping(tmpnode, value);
198	>	}
199	>	di_devfs_path_free(phys_path);
200	>	node = di_drv_next_node(node);
201	>	}else{
202	>	node = di_drv_next_node(node);
203	>	}
204	>	}
205	>	di_fini(root_node);
206	>	return 0;
207	>	}
208	>
209	>
210	>	#define BIG_ENOUGH 512
211	>	static int build_mapping(){
212	>	char device_name[BIG_ENOUGH];
213	>	int x;
214	>	kstat_ctl_t *kc;
215	>	kstat_t *ksp;
216	>	kstat_io_t kios;
217	>
218	>	char driver_list[BIG_ENOUGH][BIG_ENOUGH];
219	>	int list_entries = 0;
220	>	int found;
221	>
222	>	if ((kc = kstat_open()) == NULL) {
223	>	return -1;
224	>	}
225	>
226	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
227	>	if (!strcmp(ksp->ks_class, "disk")) {
228	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
229	>	/* We dont want metadevices appearing as num_diskio */
230	>	if(strcmp(ksp->ks_module, "md")==0) continue;
231	>	if((kstat_read(kc, ksp, &kios))==-1) continue;
232	>	strncpy(device_name, ksp->ks_name, sizeof device_name);
233	>	for(x=0;x<(sizeof device_name);x++){
234	>	if( isdigit((int)device_name[x]) ) break;
235	>	}
236	>	if(x == sizeof device_name) x--;
237	>	device_name[x] = '\0';
238	>
239	>	/* Check if we've not already looked it up */
240	>	found = 0;
241	>	for(x=0;x<list_entries;x++){
242	>	if (x>=BIG_ENOUGH){
243	>	/* We've got bigger than we thought was massive */
244	>	/* If we hit this.. Make big enough bigger */
245	>	return -1;
246	>	}
247	>	if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
248	>	found = 1;
249	>	break;
250	>	}
251	>	}
252	>
253	>	if(!found){
254	>	if((get_alias(device_name)) != 0){
255	>	return -1;
256	>	}
257	>	strncpy(driver_list[x], device_name, BIG_ENOUGH);
258	>	list_entries++;
259	>	}
260	>	}
261	>	}
262	>
263	>	return 0;
264	>	}
265	>
266	>	#endif
267	>
268	>	#if defined(LINUX) || defined(CYGWIN)
269	>	char *sg_f_read_line(FILE *f, const char *string){
270		/* Max line length. 8k should be more than enough */
271		static char line[8192];
272
#	Line 38 | Line 276 | char *f_read_line(FILE *f, const char *string){
276		}
277		}
278
279	+	sg_set_error(SG_ERROR_PARSE, NULL);
280		return NULL;
281		}
282
283	<	char *get_string_match(char *line, regmatch_t *match){
283	>	char *sg_get_string_match(char *line, regmatch_t *match){
284		int len=match->rm_eo - match->rm_so;
285	<	char *match_string=malloc(len+1);
285	>	char *match_string=sg_malloc(len+1);
286
287		match_string=strncpy(match_string, line+match->rm_so, len);
288		match_string[len]='\0';
289
290		return match_string;
291		}
292	<	#ifdef HAVE_ATOLL
293	<	long long get_ll_match(char *line, regmatch_t *match){
292	>
293	>	long long sg_get_ll_match(char *line, regmatch_t *match){
294		char *ptr;
295		long long num;
296
#	Line 61 | Line 300 | long long get_ll_match(char *line, regmatch_t *match){
300		return num;
301		}
302		#endif
303	+
304	+	#ifndef HAVE_ATOLL
305	+	static long long atoll(const char *s) {
306	+	long long value = 0;
307	+	int isneg = 0;
308	+
309	+	while (*s == ' ' || *s == '\t') {
310	+	s++;
311	+	}
312	+	if (*s == '-') {
313	+	isneg = 1;
314	+	s++;
315	+	}
316	+	while (*s >= '0' && *s <= '9') {
317	+	value = (10 * value) + (*s - '0');
318	+	s++;
319	+	}
320	+	return (isneg ? -value : value);
321	+	}
322	+	#endif
323	+
324	+	/*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */
325	+
326	+	/*
327	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
328	+	*
329	+	* Permission to use, copy, modify, and distribute this software for any
330	+	* purpose with or without fee is hereby granted, provided that the above
331	+	* copyright notice and this permission notice appear in all copies.
332	+	*
333	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
334	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
335	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
336	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
337	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
338	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
339	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
340	+	*/
341	+
342	+	/*
343	+	* Copy src to string dst of size siz.  At most siz-1 characters
344	+	* will be copied.  Always NUL terminates (unless siz == 0).
345	+	* Returns strlen(src); if retval >= siz, truncation occurred.
346	+	*/
347	+	size_t sg_strlcpy(char *dst, const char *src, size_t siz){
348	+	register char *d = dst;
349	+	register const char *s = src;
350	+	register size_t n = siz;
351	+
352	+	/* Copy as many bytes as will fit */
353	+	if (n != 0 && --n != 0) {
354	+	do {
355	+	if ((*d++ = *s++) == 0)
356	+	break;
357	+	} while (--n != 0);
358	+	}
359	+
360	+	/* Not enough room in dst, add NUL and traverse rest of src */
361	+	if (n == 0) {
362	+	if (siz != 0)
363	+	*d = '\0';            /* NUL-terminate dst */
364	+	while (*s++)
365	+	;
366	+	}
367	+
368	+	return(s - src - 1);    /* count does not include NUL */
369	+	}
370	+
371	+	/*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */
372	+
373	+	/*
374	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
375	+	*
376	+	* Permission to use, copy, modify, and distribute this software for any
377	+	* purpose with or without fee is hereby granted, provided that the above
378	+	* copyright notice and this permission notice appear in all copies.
379	+	*
380	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
381	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
382	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
383	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
384	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
385	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
386	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
387	+	*/
388	+
389	+	/*
390	+	* Appends src to string dst of size siz (unlike strncat, siz is the
391	+	* full size of dst, not space left).  At most siz-1 characters
392	+	* will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
393	+	* Returns strlen(src) + MIN(siz, strlen(initial dst)).
394	+	* If retval >= siz, truncation occurred.
395	+	*/
396	+	size_t sg_strlcat(char *dst, const char *src, size_t siz){
397	+	register char *d = dst;
398	+	register const char *s = src;
399	+	register size_t n = siz;
400	+	size_t dlen;
401	+
402	+	/* Find the end of dst and adjust bytes left but don't go past end */
403	+	while (n-- != 0 && *d != '\0')
404	+	d++;
405	+	dlen = d - dst;
406	+	n = siz - dlen;
407	+
408	+	if (n == 0)
409	+	return(dlen + strlen(s));
410	+	while (*s != '\0') {
411	+	if (n != 1) {
412	+	*d++ = *s;
413	+	n--;
414	+	}
415	+	s++;
416	+	}
417	+	*d = '\0';
418	+
419	+	return(dlen + (s - src));       /* count does not include NUL */
420	+	}
421	+
422	+	int sg_update_string(char **dest, const char *src) {
423	+	char *new;
424	+
425	+	if (src == NULL) {
426	+	/* We're being told to set it to NULL. */
427	+	free(*dest);
428	+	*dest = NULL;
429	+	return 0;
430	+	}
431	+
432	+	new = sg_realloc(*dest, strlen(src) + 1);
433	+	if (new == NULL) {
434	+	return -1;
435	+	}
436	+
437	+	strcpy(new, src);
438	+	*dest = new;
439	+	return 0;
440	+	}
441	+
442	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
443	+	kvm_t *sg_get_kvm() {
444	+	static kvm_t *kvmd = NULL;
445	+
446	+	if (kvmd != NULL) {
447	+	return kvmd;
448	+	}
449	+
450	+	kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
451	+	if(kvmd == NULL) {
452	+	sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
453	+	}
454	+	return kvmd;
455	+	}
456	+
457	+	/* Can't think of a better name for this function */
458	+	kvm_t *sg_get_kvm2() {
459	+	static kvm_t *kvmd2 = NULL;
460	+
461	+	if (kvmd2 != NULL) {
462	+	return kvmd2;
463	+	}
464	+
465	+	kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
466	+	if(kvmd2 == NULL) {
467	+	sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
468	+	}
469	+	return kvmd2;
470	+	}
471	+	#endif
472	+
473	+	#if defined(NETBSD) || defined(OPENBSD)
474	+	struct uvmexp *sg_get_uvmexp() {
475	+	int mib[2];
476	+	size_t size = sizeof(struct uvmexp);
477	+	static struct uvmexp uvm;
478	+	struct uvmexp *new;
479	+
480	+	mib[0] = CTL_VM;
481	+	mib[1] = VM_UVMEXP;
482	+
483	+	if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) {
484	+	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP");
485	+	return NULL;
486	+	}
487	+
488	+	return &uvm;
489	+	}
490	+	#endif
491	+
492	+	int sg_init(){
493	+	sg_set_error(SG_ERROR_NONE, NULL);
494	+
495	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
496	+	if (sg_get_kvm() == NULL) {
497	+	return -1;
498	+	}
499	+	if (sg_get_kvm2() == NULL) {
500	+	return -1;
501	+	}
502	+	#endif
503	+	#ifdef SOLARIS
504	+	/* On solaris 7, this will fail if you are not root. But, everything
505	+	* will still work, just no disk mappings. So we will ignore the exit
506	+	* status of this, and carry on merrily.
507	+	*/
508	+	#ifdef HAVE_LIBDEVINFO_H
509	+	build_mapping();
510	+	#endif
511	+	#endif
512	+	return 0;
513	+	}
514	+
515	+	int sg_drop_privileges() {
516	+	if (setegid(getgid()) != 0) {
517	+	sg_set_error_with_errno(SG_ERROR_SETEGID, NULL);
518	+	return -1;
519	+	}
520	+	if (seteuid(getuid()) != 0) {
521	+	sg_set_error_with_errno(SG_ERROR_SETEUID, NULL);
522	+	return -1;
523	+	}
524	+	return 0;
525	+	}
526	+
527	+	void *sg_realloc(void *ptr, size_t size) {
528	+	void *tmp = NULL;
529	+	tmp = realloc(ptr, size);
530	+	if(tmp == NULL) {
531	+	sg_set_error_with_errno(SG_ERROR_MALLOC, NULL);
532	+	}
533	+	return tmp;
534	+	}
535	+

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