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

Comparing projects/libstatgrab/src/libstatgrab/tools.c (file contents):
Revision 1.15 by tdb, Wed Nov 19 21:56:21 2003 UTC vs.
Revision 1.37 by ats, Sun Apr 4 23:55:48 2004 UTC

#	Line 1 | Line 1
1	<	/*
1	>	/*
2		* i-scream central monitoring system
3		* http://www.i-scream.org
4	<	* Copyright (C) 2000-2003 i-scream
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>
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	<	#ifdef NETBSD
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>
#	Line 50 | Line 61
61		#include <dirent.h>
62		#endif
63
64	<	#ifdef SOLARIS
64	>	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
65		struct map{
66		char *bsd;
67		char *svr;
#	Line 60 | Line 71 | struct map{
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	<
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;
#	Line 77 | Line 93 | void add_mapping(char *bsd, char *svr){
93		svr = strdup(svr);
94
95		if (mapping == NULL){
80	–	printf("New malloc\n");
96		mapping = malloc(sizeof(mapping_t));
97		if (mapping == NULL) return;
98		map_ptr = mapping;
#	Line 85 | Line 100 | void add_mapping(char *bsd, char *svr){
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)) ){
88	–	printf("%s matches %s\n", map_ptr->bsd, bsd);
103		return;
104		}
105		map_end_ptr = map_ptr;
#	Line 95 | Line 109 | void add_mapping(char *bsd, char *svr){
109		* new mapping_t
110		*/
111		map_end_ptr->next = malloc(sizeof(mapping_t));
98	–	printf("Second malloc\n");
112		if (map_end_ptr->next == NULL) return;
113		map_ptr = map_end_ptr->next;
114		}
115
103	–	printf("Adding %s\n", bsd);
116		map_ptr->next = NULL;
117		map_ptr->bsd = bsd;
118		map_ptr->svr = svr;
#	Line 144 | Line 156 | char *read_dir(char *disk_path){
156		return svr_name;
157		}
158		}
147	–	closedir(dirp);
159		}
160	+	closedir(dirp);
161		return NULL;
162		}
163
#	Line 162 | Line 174 | int get_alias(char *alias){
174		char *value;
175		int instance;
176		if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
177	<	fprintf(stderr, "di_init() failed\n");
166	<	exit(1);
177	>	return 1;
178		}
179		node = di_drv_first_node(alias, root_node);
180		while (node != DI_NODE_NIL) {
#	Line 173 | Line 184 | int get_alias(char *alias){
184		minor_name = di_minor_name(minor);
185		strcpy(tmpnode, alias);
186		sprintf(tmpnode, "%s%d", tmpnode, instance);
187	<	strcpy(file, "/devices");
188	<	strcat(file, phys_path);
189	<	strcat(file, ":");
190	<	strcat(file, minor_name);
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);
#	Line 188 | Line 199 | int get_alias(char *alias){
199		}
200		}
201		di_fini(root_node);
202	<	return (-1);
202	>	return 0;
203		}
204
205	<	void build_mapping(){
206	<	char device_name[512];
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 NULL;
219	>	return;
220		}
221
222		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
#	Line 214 | Line 231 | void build_mapping(){
231		}
232		if(x == sizeof device_name) x--;
233		device_name[x] = '\0';
234	<	get_alias(device_name);
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;
259	>	return 0;
260		}
261
262		#endif
#	Line 270 | Line 308 | static long long atoll(const char *s) {
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	+	char *update_string(char **dest, const char *src) {
415	+	char *new;
416	+
417	+	new = realloc(*dest, strlen(src) + 1);
418	+	if (new == NULL) {
419	+	return NULL;
420	+	}
421	+
422	+	strcpy(new, src);
423	+	*dest = new;
424	+	return new;
425	+	}
426	+
427		long long get_ll_match(char *line, regmatch_t *match){
428		char *ptr;
429		long long num;
#	Line 280 | Line 434 | long long get_ll_match(char *line, regmatch_t *match){
434		return num;
435		}
436
437	<	#ifdef ALLBSD
437	>	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
438		kvm_t *get_kvm() {
439		static kvm_t *kvmd = NULL;
440
#	Line 291 | Line 445 | kvm_t *get_kvm() {
445		kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
446		return kvmd;
447		}
448	+
449	+	/* Can't think of a better name for this function */
450	+	kvm_t *get_kvm2() {
451	+	static kvm_t *kvmd2 = NULL;
452	+
453	+	if (kvmd2 != NULL) {
454	+	return kvmd2;
455	+	}
456	+
457	+	kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
458	+	return kvmd2;
459	+	}
460		#endif
461
462	<	#ifdef NETBSD
462	>	#if defined(NETBSD) || defined(OPENBSD)
463		struct uvmexp *get_uvmexp() {
464	<	static u_long addr = 0;
465	<	static struct uvmexp uvm;
466	<	kvm_t *kvmd = get_kvm();
464	>	int mib[2];
465	>	size_t size;
466	>	static struct uvmexp *uvm = NULL;
467	>	struct uvmexp *new;
468
469	<	if (kvmd == NULL) {
469	>	mib[0] = CTL_VM;
470	>	mib[1] = VM_UVMEXP;
471	>
472	>	if (sysctl(mib, 2, NULL, &size, NULL, 0) < 0) {
473		return NULL;
474		}
475
476	<	if (addr == 0) {
477	<	struct nlist symbols[] = {
478	<	{ "_uvmexp" },
309	<	{ NULL }
310	<	};
311	<
312	<	if (kvm_nlist(kvmd, symbols) != 0) {
313	<	return NULL;
314	<	}
315	<	addr = symbols[0].n_value;
476	>	new = realloc(uvm, size);
477	>	if (new == NULL) {
478	>	return NULL;
479		}
480	+	uvm = new;
481
482	<	if (kvm_read(kvmd, addr, &uvm, sizeof uvm) != sizeof uvm) {
482	>	if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
483		return NULL;
484		}
485	<	return &uvm;
485	>
486	>	return uvm;
487		}
488		#endif
489
490		int statgrab_init(){
491	<	#ifdef ALLBSD
491	>	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
492		{
493		kvm_t *kvmd = get_kvm();
494		if (kvmd == NULL) return 1;
495		}
496	+	{
497	+	kvm_t *kvmd2 = get_kvm2();
498	+	if (kvmd2 == NULL) return 1;
499	+	}
500		#endif
501	<	#ifdef NETBSD
501	>	#if defined(NETBSD) || defined(OPENBSD)
502		{
503	+	/* This should always succeed, but it seems that on some
504	+	* versions of NetBSD the first call to get_uvmexp will return
505	+	* a non-filled-in structure; this is a workaround for that.
506	+	*/
507		struct uvmexp *uvm = get_uvmexp();
508		if (uvm == NULL) return 1;
509		}
510		#endif
511		#ifdef SOLARIS
512	+	/* On solaris 7, this will fail if you are not root. But, everything
513	+	* will still work, just no disk mappings. So we will ignore the exit
514	+	* status of this, and carry on merrily.
515	+	*/
516	+	#ifdef HAVE_LIBDEVINFO_H
517		build_mapping();
518		#endif
519	+	#endif
520		return 0;
521		}
522	+
523	+	int statgrab_drop_privileges() {
524	+	if (setegid(getgid()) != 0) return -1;
525	+	if (seteuid(getuid()) != 0) return -1;
526	+	return 0;
527	+	}
528	+

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