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

Comparing projects/libstatgrab/src/libstatgrab/tools.c (file contents):
Revision 1.41 by ats, Mon Apr 5 15:40:15 2004 UTC vs.
Revision 1.51 by tdb, Wed Apr 7 21:08:40 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 45 | Line 45
45		#endif
46
47		#include "tools.h"
48	+	#include "statgrab.h"
49
50		#ifdef SOLARIS
51		#ifdef HAVE_LIBDEVINFO_H
#	Line 90 | Line 91 | static void add_mapping(char *bsd, char *svr){
91		mapping_t *map_end_ptr;
92
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 105 | Line 106 | static 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 = strdup(bsd);
116	<	map_ptr->svr = strdup(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		}
#	Line 122 | Line 127 | 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 149 | Line 154 | static 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 171 | Line 179 | static 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 213 | Line 221 | static int build_mapping(){
221		int found;
222
223		if ((kc = kstat_open()) == NULL) {
224	<	return 1;
224	>	return -1;
225		}
226
227		for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
#	Line 235 | Line 243 | static 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 245 | Line 253 | static 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 259 | Line 267 | static int build_mapping(){
267		#endif
268
269
262	–
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];
#	Line 270 | Line 277 | char *sg_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=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 284 | Line 292 | char *sg_get_string_match(char *line, regmatch_t *matc
292		}
293
294
287	–
295		#ifndef HAVE_ATOLL
296		static long long atoll(const char *s) {
297		long long value = 0;
#	Line 329 | Line 336 | static long long atoll(const char *s) {
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;
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	<	}
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	<	}
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 */
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 $    */
#	Line 378 | Line 385 | size_t sg_strlcpy(char *dst, const char *src, size_t s
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;
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;
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';
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 */
410	>	return(dlen + (s - src));       /* count does not include NUL */
411		}
412
413	<	char *sg_update_string(char **dest, const char *src) {
413	>	int sg_update_string(char **dest, const char *src) {
414		char *new;
415
416	<	new = realloc(*dest, strlen(src) + 1);
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 NULL;
425	>	return -1;
426		}
427
428		strcpy(new, src);
429		*dest = new;
430	<	return new;
430	>	return 0;
431		}
432
433		long long sg_get_ll_match(char *line, regmatch_t *match){
#	Line 435 | Line 449 | kvm_t *sg_get_kvm() {
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
#	Line 447 | Line 464 | kvm_t *sg_get_kvm2() {
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
#	Line 454 | Line 474 | kvm_t *sg_get_kvm2() {
474		#if defined(NETBSD) || defined(OPENBSD)
475		struct uvmexp *sg_get_uvmexp() {
476		int mib[2];
477	<	size_t size;
478	<	static struct uvmexp *uvm = NULL;
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, NULL, &size, NULL, 0) < 0) {
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	<	new = realloc(uvm, size);
469	<	if (new == NULL) {
470	<	return NULL;
471	<	}
472	<	uvm = new;
473	<
474	<	if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
475	<	return NULL;
476	<	}
477	<
478	<	return uvm;
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;
496	>	return -1;
497		}
498		if (sg_get_kvm2() == NULL) {
499	<	return 1;
499	>	return -1;
500		}
501		#endif
491	–	#if defined(NETBSD) || defined(OPENBSD)
492	–	/* This should always succeed, but it seems that on some
493	–	* versions of NetBSD the first call to get_uvmexp will return
494	–	* a non-filled-in structure; this is a workaround for that.
495	–	*/
496	–	if (sg_get_uvmexp() == NULL) return 1;
497	–	#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
#	Line 508 | Line 512 | int sg_init(){
512		}
513
514		int sg_drop_privileges() {
515	<	if (setegid(getgid()) != 0) return -1;
516	<	if (seteuid(getuid()) != 0) return -1;
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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