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

Comparing projects/libstatgrab/src/libstatgrab/tools.c (file contents):
Revision 1.24 by tdb, Mon Jan 19 16:49:21 2004 UTC vs.
Revision 1.49 by tdb, Wed Apr 7 14:53:40 2004 UTC

#	Line 1 | Line 1
1		/*
2	<	* i-scream central monitoring system
2	>	* i-scream libstatgrab
3		* http://www.i-scream.org
4		* Copyright (C) 2000-2004 i-scream
5		*
#	Line 33 | Line 33
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	+	#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>
#	Line 54 | Line 62
62		#include <dirent.h>
63		#endif
64
65	<	#ifdef SOLARIS
65	>	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
66		struct map{
67		char *bsd;
68		char *svr;
#	Line 64 | Line 72 | struct map{
72		typedef struct map mapping_t;
73
74		static mapping_t *mapping = NULL;
75	+	#endif
76
77	<	char *get_svr_from_bsd(char *bsd){
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	<
83	>	#endif
84		return bsd;
85		}
86	+	#endif
87
88	<	void add_mapping(char *bsd, char *svr){
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
80	–	bsd = strdup(bsd);
81	–	svr = strdup(svr);
82	–
93		if (mapping == NULL){
94	<	mapping = malloc(sizeof(mapping_t));
94	>	mapping = sg_malloc(sizeof(mapping_t));
95		if (mapping == NULL) return;
96		map_ptr = mapping;
97		}else{
#	Line 96 | Line 106 | void add_mapping(char *bsd, char *svr){
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 = malloc(sizeof(mapping_t));
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 = bsd;
116	<	map_ptr->svr = svr;
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	<	char *read_dir(char *disk_path){
125	>
126	>	static char *read_dir(char *disk_path){
127		DIR *dirp;
128		struct dirent *dp;
129		struct stat stbuf;
130	<	char *svr_name;
130	>	char *svr_name = NULL;
131		char current_dir[MAXPATHLEN];
132		char file_name[MAXPATHLEN];
133		char temp_name[MAXPATHLEN];
#	Line 139 | Line 154 | char *read_dir(char *disk_path){
154		x = readlink(dir_dname, file_name, sizeof(file_name));
155		file_name[x] = '\0';
156		if (strcmp(file_name, temp_name) == 0) {
157	<	svr_name = strdup(dp->d_name);
157	>	if (sg_update_string(&svr_name,
158	>	dp->d_name) < 0) {
159	>	return NULL;
160	>	}
161		closedir(dirp);
162		return svr_name;
163		}
#	Line 150 | Line 168 | char *read_dir(char *disk_path){
168		}
169
170
171	<
154	<	int get_alias(char *alias){
171	>	static int get_alias(char *alias){
172		char file[MAXPATHLEN];
173		di_node_t root_node;
174		di_node_t node;
#	Line 162 | Line 179 | int get_alias(char *alias){
179		char *value;
180		int instance;
181		if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
182	<	return 1;
182	>	return -1;
183		}
184		node = di_drv_first_node(alias, root_node);
185		while (node != DI_NODE_NIL) {
#	Line 172 | Line 189 | int get_alias(char *alias){
189		minor_name = di_minor_name(minor);
190		strcpy(tmpnode, alias);
191		sprintf(tmpnode, "%s%d", tmpnode, instance);
192	<	strlcpy(file, "/devices", sizeof file);
193	<	strlcat(file, phys_path, sizeof file);
194	<	strlcat(file, ":", sizeof file);
195	<	strlcat(file, minor_name, sizeof file);
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);
#	Line 192 | Line 209 | int get_alias(char *alias){
209
210
211		#define BIG_ENOUGH 512
212	<	int build_mapping(){
212	>	static int build_mapping(){
213		char device_name[BIG_ENOUGH];
214		int x;
215		kstat_ctl_t *kc;
#	Line 204 | Line 221 | int build_mapping(){
221		int found;
222
223		if ((kc = kstat_open()) == NULL) {
224	<	return;
224	>	return -1;
225		}
226
227		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
#	Line 226 | Line 243 | int build_mapping(){
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;
246	>	return -1;
247		}
248		if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
249		found = 1;
#	Line 236 | Line 253 | int build_mapping(){
253
254		if(!found){
255		if((get_alias(device_name)) != 0){
256	<	return 1;
256	>	return -1;
257		}
258		strncpy(driver_list[x], device_name, BIG_ENOUGH);
259		list_entries++;
#	Line 251 | Line 268 | int build_mapping(){
268
269
270
271	<	char *f_read_line(FILE *f, const char *string){
271	>	char *sg_f_read_line(FILE *f, const char *string){
272		/* Max line length. 8k should be more than enough */
273		static char line[8192];
274
#	Line 264 | Line 281 | char *f_read_line(FILE *f, const char *string){
281		return NULL;
282		}
283
284	<	char *get_string_match(char *line, regmatch_t *match){
284	>	char *sg_get_string_match(char *line, regmatch_t *match){
285		int len=match->rm_eo - match->rm_so;
286	<	char *match_string=malloc(len+1);
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';
#	Line 296 | Line 313 | static long long atoll(const char *s) {
313		}
314		#endif
315
299	–	#ifndef HAVE_STRLCPY
316		/*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */
317
318		/*
#	Line 320 | Line 336 | static long long atoll(const char *s) {
336		* will be copied.  Always NUL terminates (unless siz == 0).
337		* Returns strlen(src); if retval >= siz, truncation occurred.
338		*/
339	<	size_t strlcpy(char *dst, const char *src, size_t siz){
340	<	register char *d = dst;
341	<	register const char *s = src;
342	<	register size_t n = siz;
339	>	size_t sg_strlcpy(char *dst, const char *src, size_t siz){
340	>	register char *d = dst;
341	>	register const char *s = src;
342	>	register size_t n = siz;
343
344	<	/* Copy as many bytes as will fit */
345	<	if (n != 0 && --n != 0) {
346	<	do {
347	<	if ((*d++ = *s++) == 0)
348	<	break;
349	<	} while (--n != 0);
350	<	}
344	>	/* Copy as many bytes as will fit */
345	>	if (n != 0 && --n != 0) {
346	>	do {
347	>	if ((*d++ = *s++) == 0)
348	>	break;
349	>	} while (--n != 0);
350	>	}
351
352	<	/* Not enough room in dst, add NUL and traverse rest of src */
353	<	if (n == 0) {
354	<	if (siz != 0)
355	<	*d = '\0';              /* NUL-terminate dst */
356	<	while (*s++)
357	<	;
358	<	}
352	>	/* Not enough room in dst, add NUL and traverse rest of src */
353	>	if (n == 0) {
354	>	if (siz != 0)
355	>	*d = '\0';            /* NUL-terminate dst */
356	>	while (*s++)
357	>	;
358	>	}
359
360	<	return(s - src - 1);    /* count does not include NUL */
360	>	return(s - src - 1);    /* count does not include NUL */
361		}
346	–	#endif
362
348	–	#ifndef HAVE_STRLCAT
363		/*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */
364
365		/*
#	Line 371 | Line 385 | size_t strlcpy(char *dst, const char *src, size_t siz)
385		* Returns strlen(src) + MIN(siz, strlen(initial dst)).
386		* If retval >= siz, truncation occurred.
387		*/
388	<	size_t strlcat(char *dst, const char *src, size_t siz){
389	<	register char *d = dst;
390	<	register const char *s = src;
391	<	register size_t n = siz;
392	<	size_t dlen;
388	>	size_t sg_strlcat(char *dst, const char *src, size_t siz){
389	>	register char *d = dst;
390	>	register const char *s = src;
391	>	register size_t n = siz;
392	>	size_t dlen;
393
394	<	/* Find the end of dst and adjust bytes left but don't go past end */
395	<	while (n-- != 0 && *d != '\0')
396	<	d++;
397	<	dlen = d - dst;
398	<	n = siz - dlen;
394	>	/* Find the end of dst and adjust bytes left but don't go past end */
395	>	while (n-- != 0 && *d != '\0')
396	>	d++;
397	>	dlen = d - dst;
398	>	n = siz - dlen;
399
400	<	if (n == 0)
401	<	return(dlen + strlen(s));
402	<	while (*s != '\0') {
403	<	if (n != 1) {
404	<	*d++ = *s;
405	<	n--;
406	<	}
407	<	s++;
408	<	}
409	<	*d = '\0';
400	>	if (n == 0)
401	>	return(dlen + strlen(s));
402	>	while (*s != '\0') {
403	>	if (n != 1) {
404	>	*d++ = *s;
405	>	n--;
406	>	}
407	>	s++;
408	>	}
409	>	*d = '\0';
410
411	<	return(dlen + (s - src));       /* count does not include NUL */
411	>	return(dlen + (s - src));       /* count does not include NUL */
412		}
413
414	<	#endif
414	>	int sg_update_string(char **dest, const char *src) {
415	>	char *new;
416
417	<	long long get_ll_match(char *line, regmatch_t *match){
417	>	if (src == NULL) {
418	>	/* We're being told to set it to NULL. */
419	>	free(*dest);
420	>	*dest = NULL;
421	>	return 0;
422	>	}
423	>
424	>	new = sg_realloc(*dest, strlen(src) + 1);
425	>	if (new == NULL) {
426	>	return -1;
427	>	}
428	>
429	>	strcpy(new, src);
430	>	*dest = new;
431	>	return 0;
432	>	}
433	>
434	>	long long sg_get_ll_match(char *line, regmatch_t *match){
435		char *ptr;
436		long long num;
437
#	Line 409 | Line 441 | long long get_ll_match(char *line, regmatch_t *match){
441		return num;
442		}
443
444	<	#ifdef ALLBSD
445	<	kvm_t *get_kvm() {
444	>	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
445	>	kvm_t *sg_get_kvm() {
446		static kvm_t *kvmd = NULL;
447
448		if (kvmd != NULL) {
#	Line 420 | Line 452 | kvm_t *get_kvm() {
452		kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
453		return kvmd;
454		}
423	–	#endif
455
456	<	#ifdef NETBSD
457	<	struct uvmexp *get_uvmexp() {
458	<	static u_long addr = 0;
428	<	static struct uvmexp uvm;
429	<	kvm_t *kvmd = get_kvm();
456	>	/* Can't think of a better name for this function */
457	>	kvm_t *sg_get_kvm2() {
458	>	static kvm_t *kvmd2 = NULL;
459
460	<	if (kvmd == NULL) {
461	<	return NULL;
460	>	if (kvmd2 != NULL) {
461	>	return kvmd2;
462		}
463
464	<	if (addr == 0) {
465	<	struct nlist symbols[] = {
466	<	{ "_uvmexp" },
467	<	{ NULL }
439	<	};
464	>	kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
465	>	return kvmd2;
466	>	}
467	>	#endif
468
469	<	if (kvm_nlist(kvmd, symbols) != 0) {
470	<	return NULL;
471	<	}
472	<	addr = symbols[0].n_value;
473	<	}
469	>	#if defined(NETBSD) || defined(OPENBSD)
470	>	struct uvmexp *sg_get_uvmexp() {
471	>	int mib[2];
472	>	size_t size = sizeof(struct uvmexp);
473	>	static struct uvmexp uvm;
474	>	struct uvmexp *new;
475
476	<	if (kvm_read(kvmd, addr, &uvm, sizeof uvm) != sizeof uvm) {
476	>	mib[0] = CTL_VM;
477	>	mib[1] = VM_UVMEXP;
478	>
479	>	if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) {
480		return NULL;
481		}
482	+
483		return &uvm;
484		}
485		#endif
486
487	<	int statgrab_init(){
488	<	#ifdef ALLBSD
489	<	{
490	<	kvm_t *kvmd = get_kvm();
458	<	if (kvmd == NULL) return 1;
487	>	int sg_init(){
488	>	#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
489	>	if (sg_get_kvm() == NULL) {
490	>	return -1;
491		}
492	<	#endif
493	<	#ifdef NETBSD
462	<	{
463	<	struct uvmexp *uvm = get_uvmexp();
464	<	if (uvm == NULL) return 1;
492	>	if (sg_get_kvm2() == NULL) {
493	>	return -1;
494		}
495		#endif
496		#ifdef SOLARIS
#	Line 469 | Line 498 | int statgrab_init(){
498		* will still work, just no disk mappings. So we will ignore the exit
499		* status of this, and carry on merrily.
500		*/
501	+	#ifdef HAVE_LIBDEVINFO_H
502		build_mapping();
503		#endif
504	+	#endif
505		return 0;
506		}
507
508	<	int statgrab_drop_privileges() {
508	>	int sg_drop_privileges() {
509		if (setegid(getgid()) != 0) return -1;
510		if (seteuid(getuid()) != 0) return -1;
511		return 0;
512	+	}
513	+
514	+	void *sg_realloc(void *ptr, size_t size) {
515	+	void *tmp = NULL;
516	+	tmp = realloc(ptr, size);
517	+	if(tmp == NULL) {
518	+	sg_set_error(SG_ERROR_MALLOC_FAILED, NULL);
519	+	}
520	+	return tmp;
521		}
522

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