src/libstatgrab/tools.c

/*
 * i-scream central monitoring system
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: tools.c,v 1.37 2004/04/04 23:55:48 ats Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <regex.h>
#ifdef ALLBSD
#include <fcntl.h>
#endif
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
#include <kvm.h>
#include <paths.h>
#endif
#if defined(NETBSD) || defined(OPENBSD)
#include <uvm/uvm_extern.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#endif

#include "tools.h"

#ifdef SOLARIS
#ifdef HAVE_LIBDEVINFO_H
#include <libdevinfo.h>
#endif
#include <kstat.h>
#include <unistd.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/dkio.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/fcntl.h>
#include <dirent.h>
#endif

#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
struct map{
        char *bsd;
        char *svr;

        struct map *next;
};
typedef struct map mapping_t;

static mapping_t *mapping = NULL; 
#endif

#ifdef SOLARIS
const char *get_svr_from_bsd(const char *bsd){
#ifdef HAVE_LIBDEVINFO_H
        mapping_t *map_ptr;
        for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next)
                if(!strcmp(map_ptr->bsd, bsd)) return map_ptr->svr;
#endif
        return bsd;
}
#endif

#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
void add_mapping(char *bsd, char *svr){
        mapping_t *map_ptr;
        mapping_t *map_end_ptr;

        bsd = strdup(bsd);
        svr = strdup(svr);

        if (mapping == NULL){
                mapping = malloc(sizeof(mapping_t));
                if (mapping == NULL) return;
                map_ptr = mapping;
        }else{
                /* See if its already been added */
                for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
                        if( (!strcmp(map_ptr->bsd, bsd)) || (!strcmp(map_ptr->svr, svr)) ){
                                return;
                        }
                        map_end_ptr = map_ptr;
                }

                /* We've reached end of list and not found the entry.. So we need to malloc
                 * new mapping_t
                 */
                map_end_ptr->next = malloc(sizeof(mapping_t));
                if (map_end_ptr->next == NULL) return;
                map_ptr = map_end_ptr->next;
        }

        map_ptr->next = NULL;
        map_ptr->bsd = bsd;
        map_ptr->svr = svr;

        return;
}

char *read_dir(char *disk_path){
        DIR *dirp;
        struct dirent *dp;
        struct stat stbuf;
        char *svr_name;
        char current_dir[MAXPATHLEN];
        char file_name[MAXPATHLEN];
        char temp_name[MAXPATHLEN];
        char dir_dname[MAXPATHLEN];
        char *dsk_dir;
        int x;

        dsk_dir = "/dev/osa/dev/dsk";
        strncpy(current_dir, dsk_dir, sizeof current_dir);
        if ((dirp = opendir(current_dir)) == NULL){
                dsk_dir = "/dev/dsk";
                snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
                if ((dirp = opendir(current_dir)) == NULL){
                        return NULL;
                }
        }

        while ((dp = readdir(dirp)) != NULL){
                snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
                snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
                stat(dir_dname,&stbuf);

                if (S_ISBLK(stbuf.st_mode)){
                        x = readlink(dir_dname, file_name, sizeof(file_name));
                        file_name[x] = '\0';
                        if (strcmp(file_name, temp_name) == 0) {
                                svr_name = strdup(dp->d_name);
                                closedir(dirp);
                                return svr_name;
                        }
                }
        }
        closedir(dirp);
        return NULL;
}


int get_alias(char *alias){
        char file[MAXPATHLEN];
        di_node_t root_node;
        di_node_t node;
        di_minor_t minor = DI_MINOR_NIL;
        char tmpnode[MAXPATHLEN];
        char *phys_path;
        char *minor_name;
        char *value;
        int instance;
        if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
                return 1;
        }
        node = di_drv_first_node(alias, root_node);
        while (node != DI_NODE_NIL) {
                if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
                        instance = di_instance(node);
                        phys_path = di_devfs_path(node);
                        minor_name = di_minor_name(minor);
                        strcpy(tmpnode, alias);
                        sprintf(tmpnode, "%s%d", tmpnode, instance);
                        strlcpy(file, "/devices", sizeof file);
                        strlcat(file, phys_path, sizeof file);
                        strlcat(file, ":", sizeof file);
                        strlcat(file, minor_name, sizeof file);
                        value = read_dir(file);
                        if (value != NULL){
                                add_mapping(tmpnode, value);
                        }
                        di_devfs_path_free(phys_path);
                        node = di_drv_next_node(node);
                }else{
                        node = di_drv_next_node(node);
                }
        }
        di_fini(root_node);
        return 0;
}


#define BIG_ENOUGH 512
int build_mapping(){
        char device_name[BIG_ENOUGH];
        int x;
        kstat_ctl_t *kc;
        kstat_t *ksp;
        kstat_io_t kios;

        char driver_list[BIG_ENOUGH][BIG_ENOUGH];
        int list_entries = 0;
        int found;

        if ((kc = kstat_open()) == NULL) {
                return;
        }

        for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
                if (!strcmp(ksp->ks_class, "disk")) {
                        if(ksp->ks_type != KSTAT_TYPE_IO) continue;
                        /* We dont want metadevices appearing as num_diskio */
                        if(strcmp(ksp->ks_module, "md")==0) continue;
                        if((kstat_read(kc, ksp, &kios))==-1) continue;
                        strncpy(device_name, ksp->ks_name, sizeof device_name);
                        for(x=0;x<(sizeof device_name);x++){
                                if( isdigit((int)device_name[x]) ) break;
                        }
                        if(x == sizeof device_name) x--;
                        device_name[x] = '\0';

                        /* Check if we've not already looked it up */
                        found = 0;
                        for(x=0;x<list_entries;x++){
                                if (x>=BIG_ENOUGH){
                                        /* We've got bigger than we thought was massive */
                                        /* If we hit this.. Make big enough bigger */
                                        return 1;
                                }
                                if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
                                        found = 1;
                                        break;
                                }
                        }

                        if(!found){
                                if((get_alias(device_name)) != 0){
                                        return 1;
                                }
                                strncpy(driver_list[x], device_name, BIG_ENOUGH);
                                list_entries++;
                        }
                }
        }

        return 0;
}

#endif


char *f_read_line(FILE *f, const char *string){
        /* Max line length. 8k should be more than enough */
        static char line[8192];

        while((fgets(line, sizeof(line), f))!=NULL){
                if(strncmp(string, line, strlen(string))==0){
                        return line;
                }
        }

        return NULL;
}

char *get_string_match(char *line, regmatch_t *match){
        int len=match->rm_eo - match->rm_so;
        char *match_string=malloc(len+1);

        match_string=strncpy(match_string, line+match->rm_so, len);
        match_string[len]='\0';

        return match_string;
}


#ifndef HAVE_ATOLL
static long long atoll(const char *s) {
        long long value = 0;
        int isneg = 0;

        while (*s == ' ' || *s == '\t') {
                s++;
        }
        if (*s == '-') {
                isneg = 1;
                s++;
        }
        while (*s >= '0' && *s <= '9') {
                value = (10 * value) + (*s - '0');
                s++;
        }
        return (isneg ? -value : value);
}
#endif

#ifndef HAVE_STRLCPY
/*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */

/*
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Copy src to string dst of size siz.  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz == 0).
 * Returns strlen(src); if retval >= siz, truncation occurred.
 */
size_t strlcpy(char *dst, const char *src, size_t siz){
        register char *d = dst;
        register const char *s = src;
        register size_t n = siz;

        /* Copy as many bytes as will fit */
        if (n != 0 && --n != 0) {
                do {
                        if ((*d++ = *s++) == 0)
                                break;
                } while (--n != 0);
        }

        /* Not enough room in dst, add NUL and traverse rest of src */
        if (n == 0) {
                if (siz != 0)
                        *d = '\0';              /* NUL-terminate dst */
                while (*s++)
                        ;
        }

        return(s - src - 1);    /* count does not include NUL */
}
#endif

#ifndef HAVE_STRLCAT
/*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */

/*
 * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * Appends src to string dst of size siz (unlike strncat, siz is the
 * full size of dst, not space left).  At most siz-1 characters
 * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
 * Returns strlen(src) + MIN(siz, strlen(initial dst)).
 * If retval >= siz, truncation occurred.
 */
size_t strlcat(char *dst, const char *src, size_t siz){
        register char *d = dst;
        register const char *s = src;
        register size_t n = siz;
        size_t dlen;

        /* Find the end of dst and adjust bytes left but don't go past end */
        while (n-- != 0 && *d != '\0')
                d++;
        dlen = d - dst;
        n = siz - dlen;

        if (n == 0)
                return(dlen + strlen(s));
        while (*s != '\0') {
                if (n != 1) {
                        *d++ = *s;
                        n--;
                }
                s++;
        }
        *d = '\0';

        return(dlen + (s - src));       /* count does not include NUL */
}

#endif

char *update_string(char **dest, const char *src) {
        char *new;

        new = realloc(*dest, strlen(src) + 1);
        if (new == NULL) {
                return NULL;
        }

        strcpy(new, src);
        *dest = new;
        return new;
}

long long get_ll_match(char *line, regmatch_t *match){
        char *ptr;
        long long num;

        ptr=line+match->rm_so;
        num=atoll(ptr);

        return num;
}

#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
kvm_t *get_kvm() {
        static kvm_t *kvmd = NULL;

        if (kvmd != NULL) {
                return kvmd;
        }

        kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
        return kvmd;
}

/* Can't think of a better name for this function */
kvm_t *get_kvm2() {
        static kvm_t *kvmd2 = NULL;

        if (kvmd2 != NULL) {
                return kvmd2;
        }

        kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
        return kvmd2;
}
#endif

#if defined(NETBSD) || defined(OPENBSD)
struct uvmexp *get_uvmexp() {
        int mib[2];
        size_t size;
        static struct uvmexp *uvm = NULL;
        struct uvmexp *new;

        mib[0] = CTL_VM;
        mib[1] = VM_UVMEXP;

        if (sysctl(mib, 2, NULL, &size, NULL, 0) < 0) {
                return NULL;
        }

        new = realloc(uvm, size);
        if (new == NULL) {
                return NULL;
        }
        uvm = new;

        if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
                return NULL;
        }

        return uvm;
}
#endif

int statgrab_init(){
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
        { 
                kvm_t *kvmd = get_kvm(); 
                if (kvmd == NULL) return 1;
        }
        { 
                kvm_t *kvmd2 = get_kvm2();
                if (kvmd2 == NULL) return 1;
        }
#endif
#if defined(NETBSD) || defined(OPENBSD)
        {
                /* This should always succeed, but it seems that on some
                 * versions of NetBSD the first call to get_uvmexp will return
                 * a non-filled-in structure; this is a workaround for that.
                 */
                struct uvmexp *uvm = get_uvmexp();
                if (uvm == NULL) return 1;
        }
#endif
#ifdef SOLARIS
        /* On solaris 7, this will fail if you are not root. But, everything
         * will still work, just no disk mappings. So we will ignore the exit
         * status of this, and carry on merrily.
         */
#ifdef HAVE_LIBDEVINFO_H
        build_mapping();
#endif
#endif
        return 0;
}

int statgrab_drop_privileges() {
        if (setegid(getgid()) != 0) return -1;
        if (seteuid(getuid()) != 0) return -1;
        return 0;
}

Revision:	1.38
Committed:	Mon Apr 5 00:01:48 2004 UTC (20 years, 1 month ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.37:	+2 -2 lines
Log Message:	Add prototype for get_svr_from_bsd, and make it take and return const char *.
#	Content
1	/*
2	* i-scream central monitoring system
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: tools.c,v 1.37 2004/04/04 23:55:48 ats Exp $
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	#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>
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 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	void add_mapping(char bsd, char svr){
89	mapping_t *map_ptr;
90	mapping_t *map_end_ptr;
91
92	bsd = strdup(bsd);
93	svr = strdup(svr);
94
95	if (mapping == NULL){
96	mapping = malloc(sizeof(mapping_t));
97	if (mapping == NULL) return;
98	map_ptr = mapping;
99	}else{
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)) ){
103	return;
104	}
105	map_end_ptr = map_ptr;
106	}
107
108	/* We've reached end of list and not found the entry.. So we need to malloc
109	* new mapping_t
110	*/
111	map_end_ptr->next = malloc(sizeof(mapping_t));
112	if (map_end_ptr->next == NULL) return;
113	map_ptr = map_end_ptr->next;
114	}
115
116	map_ptr->next = NULL;
117	map_ptr->bsd = bsd;
118	map_ptr->svr = svr;
119
120	return;
121	}
122
123	char read_dir(char disk_path){
124	DIR *dirp;
125	struct dirent *dp;
126	struct stat stbuf;
127	char *svr_name;
128	char current_dir[MAXPATHLEN];
129	char file_name[MAXPATHLEN];
130	char temp_name[MAXPATHLEN];
131	char dir_dname[MAXPATHLEN];
132	char *dsk_dir;
133	int x;
134
135	dsk_dir = "/dev/osa/dev/dsk";
136	strncpy(current_dir, dsk_dir, sizeof current_dir);
137	if ((dirp = opendir(current_dir)) == NULL){
138	dsk_dir = "/dev/dsk";
139	snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
140	if ((dirp = opendir(current_dir)) == NULL){
141	return NULL;
142	}
143	}
144
145	while ((dp = readdir(dirp)) != NULL){
146	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
147	snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
148	stat(dir_dname,&stbuf);
149
150	if (S_ISBLK(stbuf.st_mode)){
151	x = readlink(dir_dname, file_name, sizeof(file_name));
152	file_name[x] = '\0';
153	if (strcmp(file_name, temp_name) == 0) {
154	svr_name = strdup(dp->d_name);
155	closedir(dirp);
156	return svr_name;
157	}
158	}
159	}
160	closedir(dirp);
161	return NULL;
162	}
163
164
165
166	int get_alias(char *alias){
167	char file[MAXPATHLEN];
168	di_node_t root_node;
169	di_node_t node;
170	di_minor_t minor = DI_MINOR_NIL;
171	char tmpnode[MAXPATHLEN];
172	char *phys_path;
173	char *minor_name;
174	char *value;
175	int instance;
176	if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
177	return 1;
178	}
179	node = di_drv_first_node(alias, root_node);
180	while (node != DI_NODE_NIL) {
181	if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
182	instance = di_instance(node);
183	phys_path = di_devfs_path(node);
184	minor_name = di_minor_name(minor);
185	strcpy(tmpnode, alias);
186	sprintf(tmpnode, "%s%d", tmpnode, instance);
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);
194	}
195	di_devfs_path_free(phys_path);
196	node = di_drv_next_node(node);
197	}else{
198	node = di_drv_next_node(node);
199	}
200	}
201	di_fini(root_node);
202	return 0;
203	}
204
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;
220	}
221
222	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
223	if (!strcmp(ksp->ks_class, "disk")) {
224	if(ksp->ks_type != KSTAT_TYPE_IO) continue;
225	/* We dont want metadevices appearing as num_diskio */
226	if(strcmp(ksp->ks_module, "md")==0) continue;
227	if((kstat_read(kc, ksp, &kios))==-1) continue;
228	strncpy(device_name, ksp->ks_name, sizeof device_name);
229	for(x=0;x<(sizeof device_name);x++){
230	if( isdigit((int)device_name[x]) ) break;
231	}
232	if(x == sizeof device_name) x--;
233	device_name[x] = '\0';
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 0;
260	}
261
262	#endif
263
264
265
266	char f_read_line(FILE f, const char *string){
267	/* Max line length. 8k should be more than enough */
268	static char line[8192];
269
270	while((fgets(line, sizeof(line), f))!=NULL){
271	if(strncmp(string, line, strlen(string))==0){
272	return line;
273	}
274	}
275
276	return NULL;
277	}
278
279	char get_string_match(char line, regmatch_t *match){
280	int len=match->rm_eo - match->rm_so;
281	char *match_string=malloc(len+1);
282
283	match_string=strncpy(match_string, line+match->rm_so, len);
284	match_string[len]='\0';
285
286	return match_string;
287	}
288
289
290
291	#ifndef HAVE_ATOLL
292	static long long atoll(const char *s) {
293	long long value = 0;
294	int isneg = 0;
295
296	while (s == ' ' \|\| s == '\t') {
297	s++;
298	}
299	if (*s == '-') {
300	isneg = 1;
301	s++;
302	}
303	while (s >= '0' && s <= '9') {
304	value = (10 * value) + (*s - '0');
305	s++;
306	}
307	return (isneg ? -value : value);
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;
430
431	ptr=line+match->rm_so;
432	num=atoll(ptr);
433
434	return num;
435	}
436
437	#if (defined(FREEBSD) && !defined(FREEBSD5)) \|\| defined(DFBSD)
438	kvm_t *get_kvm() {
439	static kvm_t *kvmd = NULL;
440
441	if (kvmd != NULL) {
442	return kvmd;
443	}
444
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	#if defined(NETBSD) \|\| defined(OPENBSD)
463	struct uvmexp *get_uvmexp() {
464	int mib[2];
465	size_t size;
466	static struct uvmexp *uvm = NULL;
467	struct uvmexp *new;
468
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	new = realloc(uvm, size);
477	if (new == NULL) {
478	return NULL;
479	}
480	uvm = new;
481
482	if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
483	return NULL;
484	}
485
486	return uvm;
487	}
488	#endif
489
490	int statgrab_init(){
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	#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