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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 1.51 by tdb, Wed Apr 7 21:08:40 2004 UTC

#	Line 1 | Line 1
1	+	/*
2	+	* i-scream libstatgrab
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	<	char *f_read_line(FILE *f, const char *string){
47	>	#include "tools.h"
48	>	#include "statgrab.h"
49	>
50	>	#ifdef SOLARIS
51	>	#ifdef HAVE_LIBDEVINFO_H
52	>	#include <libdevinfo.h>
53	>	#endif
54	>	#include <kstat.h>
55	>	#include <unistd.h>
56	>	#include <ctype.h>
57	>	#include <sys/types.h>
58	>	#include <sys/dkio.h>
59	>	#include <sys/stat.h>
60	>	#include <fcntl.h>
61	>	#include <sys/fcntl.h>
62	>	#include <dirent.h>
63	>	#endif
64	>
65	>	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
66	>	struct map{
67	>	char *bsd;
68	>	char *svr;
69	>
70	>	struct map *next;
71	>	};
72	>	typedef struct map mapping_t;
73	>
74	>	static mapping_t *mapping = NULL;
75	>	#endif
76	>
77	>	#ifdef SOLARIS
78	>	const char *sg_get_svr_from_bsd(const char *bsd){
79	>	#ifdef HAVE_LIBDEVINFO_H
80	>	mapping_t *map_ptr;
81	>	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next)
82	>	if(!strcmp(map_ptr->bsd, bsd)) return map_ptr->svr;
83	>	#endif
84	>	return bsd;
85	>	}
86	>	#endif
87	>
88	>	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
89	>	static void add_mapping(char *bsd, char *svr){
90	>	mapping_t *map_ptr;
91	>	mapping_t *map_end_ptr;
92	>
93	>	if (mapping == NULL){
94	>	mapping = sg_malloc(sizeof(mapping_t));
95	>	if (mapping == NULL) return;
96	>	map_ptr = mapping;
97	>	}else{
98	>	/* See if its already been added */
99	>	for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
100	>	if( (!strcmp(map_ptr->bsd, bsd)) || (!strcmp(map_ptr->svr, svr)) ){
101	>	return;
102	>	}
103	>	map_end_ptr = map_ptr;
104	>	}
105	>
106	>	/* We've reached end of list and not found the entry.. So we need to malloc
107	>	* new mapping_t
108	>	*/
109	>	map_end_ptr->next = sg_malloc(sizeof(mapping_t));
110	>	if (map_end_ptr->next == NULL) return;
111	>	map_ptr = map_end_ptr->next;
112	>	}
113	>
114	>	map_ptr->next = NULL;
115	>	map_ptr->bsd = NULL;
116	>	map_ptr->svr = NULL;
117	>	if (sg_update_string(&map_ptr->bsd, bsd) < 0
118	>	|| sg_update_string(&map_ptr->svr, svr) < 0) {
119	>	return;
120	>	}
121	>
122	>	return;
123	>	}
124	>
125	>
126	>	static char *read_dir(char *disk_path){
127	>	DIR *dirp;
128	>	struct dirent *dp;
129	>	struct stat stbuf;
130	>	char *svr_name = NULL;
131	>	char current_dir[MAXPATHLEN];
132	>	char file_name[MAXPATHLEN];
133	>	char temp_name[MAXPATHLEN];
134	>	char dir_dname[MAXPATHLEN];
135	>	char *dsk_dir;
136	>	int x;
137	>
138	>	dsk_dir = "/dev/osa/dev/dsk";
139	>	strncpy(current_dir, dsk_dir, sizeof current_dir);
140	>	if ((dirp = opendir(current_dir)) == NULL){
141	>	dsk_dir = "/dev/dsk";
142	>	snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
143	>	if ((dirp = opendir(current_dir)) == NULL){
144	>	return NULL;
145	>	}
146	>	}
147	>
148	>	while ((dp = readdir(dirp)) != NULL){
149	>	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
150	>	snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
151	>	stat(dir_dname,&stbuf);
152	>
153	>	if (S_ISBLK(stbuf.st_mode)){
154	>	x = readlink(dir_dname, file_name, sizeof(file_name));
155	>	file_name[x] = '\0';
156	>	if (strcmp(file_name, temp_name) == 0) {
157	>	if (sg_update_string(&svr_name,
158	>	dp->d_name) < 0) {
159	>	return NULL;
160	>	}
161	>	closedir(dirp);
162	>	return svr_name;
163	>	}
164	>	}
165	>	}
166	>	closedir(dirp);
167	>	return NULL;
168	>	}
169	>
170	>
171	>	static int get_alias(char *alias){
172	>	char file[MAXPATHLEN];
173	>	di_node_t root_node;
174	>	di_node_t node;
175	>	di_minor_t minor = DI_MINOR_NIL;
176	>	char tmpnode[MAXPATHLEN];
177	>	char *phys_path;
178	>	char *minor_name;
179	>	char *value;
180	>	int instance;
181	>	if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
182	>	return -1;
183	>	}
184	>	node = di_drv_first_node(alias, root_node);
185	>	while (node != DI_NODE_NIL) {
186	>	if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
187	>	instance = di_instance(node);
188	>	phys_path = di_devfs_path(node);
189	>	minor_name = di_minor_name(minor);
190	>	strcpy(tmpnode, alias);
191	>	sprintf(tmpnode, "%s%d", tmpnode, instance);
192	>	sg_strlcpy(file, "/devices", sizeof file);
193	>	sg_strlcat(file, phys_path, sizeof file);
194	>	sg_strlcat(file, ":", sizeof file);
195	>	sg_strlcat(file, minor_name, sizeof file);
196	>	value = read_dir(file);
197	>	if (value != NULL){
198	>	add_mapping(tmpnode, value);
199	>	}
200	>	di_devfs_path_free(phys_path);
201	>	node = di_drv_next_node(node);
202	>	}else{
203	>	node = di_drv_next_node(node);
204	>	}
205	>	}
206	>	di_fini(root_node);
207	>	return 0;
208	>	}
209	>
210	>
211	>	#define BIG_ENOUGH 512
212	>	static int build_mapping(){
213	>	char device_name[BIG_ENOUGH];
214	>	int x;
215	>	kstat_ctl_t *kc;
216	>	kstat_t *ksp;
217	>	kstat_io_t kios;
218	>
219	>	char driver_list[BIG_ENOUGH][BIG_ENOUGH];
220	>	int list_entries = 0;
221	>	int found;
222	>
223	>	if ((kc = kstat_open()) == NULL) {
224	>	return -1;
225	>	}
226	>
227	>	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
228	>	if (!strcmp(ksp->ks_class, "disk")) {
229	>	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
230	>	/* We dont want metadevices appearing as num_diskio */
231	>	if(strcmp(ksp->ks_module, "md")==0) continue;
232	>	if((kstat_read(kc, ksp, &kios))==-1) continue;
233	>	strncpy(device_name, ksp->ks_name, sizeof device_name);
234	>	for(x=0;x<(sizeof device_name);x++){
235	>	if( isdigit((int)device_name[x]) ) break;
236	>	}
237	>	if(x == sizeof device_name) x--;
238	>	device_name[x] = '\0';
239	>
240	>	/* Check if we've not already looked it up */
241	>	found = 0;
242	>	for(x=0;x<list_entries;x++){
243	>	if (x>=BIG_ENOUGH){
244	>	/* We've got bigger than we thought was massive */
245	>	/* If we hit this.. Make big enough bigger */
246	>	return -1;
247	>	}
248	>	if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
249	>	found = 1;
250	>	break;
251	>	}
252	>	}
253	>
254	>	if(!found){
255	>	if((get_alias(device_name)) != 0){
256	>	return -1;
257	>	}
258	>	strncpy(driver_list[x], device_name, BIG_ENOUGH);
259	>	list_entries++;
260	>	}
261	>	}
262	>	}
263	>
264	>	return 0;
265	>	}
266	>
267	>	#endif
268	>
269	>
270	>	char *sg_f_read_line(FILE *f, const char *string){
271		/* Max line length. 8k should be more than enough */
272		static char line[8192];
273
#	Line 11 | Line 277 | char *f_read_line(FILE *f, const char *string){
277		}
278		}
279
280	+	sg_set_error(SG_ERROR_PARSE, NULL);
281		return NULL;
282		}
283	+
284	+	char *sg_get_string_match(char *line, regmatch_t *match){
285	+	int len=match->rm_eo - match->rm_so;
286	+	char *match_string=sg_malloc(len+1);
287	+
288	+	match_string=strncpy(match_string, line+match->rm_so, len);
289	+	match_string[len]='\0';
290	+
291	+	return match_string;
292	+	}
293	+
294	+
295	+	#ifndef HAVE_ATOLL
296	+	static long long atoll(const char *s) {
297	+	long long value = 0;
298	+	int isneg = 0;
299	+
300	+	while (*s == ' ' || *s == '\t') {
301	+	s++;
302	+	}
303	+	if (*s == '-') {
304	+	isneg = 1;
305	+	s++;
306	+	}
307	+	while (*s >= '0' && *s <= '9') {
308	+	value = (10 * value) + (*s - '0');
309	+	s++;
310	+	}
311	+	return (isneg ? -value : value);
312	+	}
313	+	#endif
314	+
315	+	/*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */
316	+
317	+	/*
318	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
319	+	*
320	+	* Permission to use, copy, modify, and distribute this software for any
321	+	* purpose with or without fee is hereby granted, provided that the above
322	+	* copyright notice and this permission notice appear in all copies.
323	+	*
324	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
325	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
326	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
327	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
328	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
329	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
330	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
331	+	*/
332	+
333	+	/*
334	+	* Copy src to string dst of size siz.  At most siz-1 characters
335	+	* will be copied.  Always NUL terminates (unless siz == 0).
336	+	* Returns strlen(src); if retval >= siz, truncation occurred.
337	+	*/
338	+	size_t sg_strlcpy(char *dst, const char *src, size_t siz){
339	+	register char *d = dst;
340	+	register const char *s = src;
341	+	register size_t n = siz;
342	+
343	+	/* Copy as many bytes as will fit */
344	+	if (n != 0 && --n != 0) {
345	+	do {
346	+	if ((*d++ = *s++) == 0)
347	+	break;
348	+	} while (--n != 0);
349	+	}
350	+
351	+	/* Not enough room in dst, add NUL and traverse rest of src */
352	+	if (n == 0) {
353	+	if (siz != 0)
354	+	*d = '\0';            /* NUL-terminate dst */
355	+	while (*s++)
356	+	;
357	+	}
358	+
359	+	return(s - src - 1);    /* count does not include NUL */
360	+	}
361	+
362	+	/*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */
363	+
364	+	/*
365	+	* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
366	+	*
367	+	* Permission to use, copy, modify, and distribute this software for any
368	+	* purpose with or without fee is hereby granted, provided that the above
369	+	* copyright notice and this permission notice appear in all copies.
370	+	*
371	+	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
372	+	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
373	+	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
374	+	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
375	+	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
376	+	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
377	+	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
378	+	*/
379	+
380	+	/*
381	+	* Appends src to string dst of size siz (unlike strncat, siz is the
382	+	* full size of dst, not space left).  At most siz-1 characters
383	+	* will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
384	+	* Returns strlen(src) + MIN(siz, strlen(initial dst)).
385	+	* If retval >= siz, truncation occurred.
386	+	*/
387	+	size_t sg_strlcat(char *dst, const char *src, size_t siz){
388	+	register char *d = dst;
389	+	register const char *s = src;
390	+	register size_t n = siz;
391	+	size_t dlen;
392	+
393	+	/* Find the end of dst and adjust bytes left but don't go past end */
394	+	while (n-- != 0 && *d != '\0')
395	+	d++;
396	+	dlen = d - dst;
397	+	n = siz - dlen;
398	+
399	+	if (n == 0)
400	+	return(dlen + strlen(s));
401	+	while (*s != '\0') {
402	+	if (n != 1) {
403	+	*d++ = *s;
404	+	n--;
405	+	}
406	+	s++;
407	+	}
408	+	*d = '\0';
409	+
410	+	return(dlen + (s - src));       /* count does not include NUL */
411	+	}
412	+
413	+	int sg_update_string(char **dest, const char *src) {
414	+	char *new;
415	+
416	+	if (src == NULL) {
417	+	/* We're being told to set it to NULL. */
418	+	free(*dest);
419	+	*dest = NULL;
420	+	return 0;
421	+	}
422	+
423	+	new = sg_realloc(*dest, strlen(src) + 1);
424	+	if (new == NULL) {
425	+	return -1;
426	+	}
427	+
428	+	strcpy(new, src);
429	+	*dest = new;
430	+	return 0;
431	+	}
432	+
433	+	long long sg_get_ll_match(char *line, regmatch_t *match){
434	+	char *ptr;
435	+	long long num;
436	+
437	+	ptr=line+match->rm_so;
438	+	num=atoll(ptr);
439	+
440	+	return num;
441	+	}
442	+
443	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
444	+	kvm_t *sg_get_kvm() {
445	+	static kvm_t *kvmd = NULL;
446	+
447	+	if (kvmd != NULL) {
448	+	return kvmd;
449	+	}
450	+
451	+	kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
452	+	if(kvmd == NULL) {
453	+	sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
454	+	}
455	+	return kvmd;
456	+	}
457	+
458	+	/* Can't think of a better name for this function */
459	+	kvm_t *sg_get_kvm2() {
460	+	static kvm_t *kvmd2 = NULL;
461	+
462	+	if (kvmd2 != NULL) {
463	+	return kvmd2;
464	+	}
465	+
466	+	kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
467	+	if(kvmd2 == NULL) {
468	+	sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
469	+	}
470	+	return kvmd2;
471	+	}
472	+	#endif
473	+
474	+	#if defined(NETBSD) || defined(OPENBSD)
475	+	struct uvmexp *sg_get_uvmexp() {
476	+	int mib[2];
477	+	size_t size = sizeof(struct uvmexp);
478	+	static struct uvmexp uvm;
479	+	struct uvmexp *new;
480	+
481	+	mib[0] = CTL_VM;
482	+	mib[1] = VM_UVMEXP;
483	+
484	+	if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) {
485	+	sg_set_error(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP");
486	+	return NULL;
487	+	}
488	+
489	+	return &uvm;
490	+	}
491	+	#endif
492	+
493	+	int sg_init(){
494	+	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
495	+	if (sg_get_kvm() == NULL) {
496	+	return -1;
497	+	}
498	+	if (sg_get_kvm2() == NULL) {
499	+	return -1;
500	+	}
501	+	#endif
502	+	#ifdef SOLARIS
503	+	/* On solaris 7, this will fail if you are not root. But, everything
504	+	* will still work, just no disk mappings. So we will ignore the exit
505	+	* status of this, and carry on merrily.
506	+	*/
507	+	#ifdef HAVE_LIBDEVINFO_H
508	+	build_mapping();
509	+	#endif
510	+	#endif
511	+	return 0;
512	+	}
513	+
514	+	int sg_drop_privileges() {
515	+	if (setegid(getgid()) != 0) {
516	+	sg_set_error(SG_ERROR_SETEGID, NULL);
517	+	return -1;
518	+	}
519	+	if (seteuid(getuid()) != 0) {
520	+	sg_set_error(SG_ERROR_SETEUID, NULL);
521	+	return -1;
522	+	}
523	+	return 0;
524	+	}
525	+
526	+	void *sg_realloc(void *ptr, size_t size) {
527	+	void *tmp = NULL;
528	+	tmp = realloc(ptr, size);
529	+	if(tmp == NULL) {
530	+	sg_set_error(SG_ERROR_MALLOC, NULL);
531	+	}
532	+	return tmp;
533	+	}
534	+

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