src/libstatgrab/tools.c

/*
 * i-scream libstatgrab
 * 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 1.53 2004/05/30 17:07:53 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>
#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"
#include "statgrab.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 *sg_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)
static void add_mapping(char *bsd, char *svr){
        mapping_t *map_ptr;
        mapping_t *map_end_ptr;

        if (mapping == NULL){
                mapping = sg_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 = sg_malloc(sizeof(mapping_t));
                if (map_end_ptr->next == NULL) return;
                map_ptr = map_end_ptr->next;
        }

        map_ptr->next = NULL;
        map_ptr->bsd = NULL;
        map_ptr->svr = NULL;
        if (sg_update_string(&map_ptr->bsd, bsd) < 0
            || sg_update_string(&map_ptr->svr, svr) < 0) {
                return;
        }

        return;
}


static char *read_dir(char *disk_path){
        DIR *dirp;
        struct dirent *dp;
        struct stat stbuf;
        char *svr_name = NULL;
        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) {
                                if (sg_update_string(&svr_name,
                                                     dp->d_name) < 0) {
                                        return NULL;
                                }
                                closedir(dirp);
                                return svr_name;
                        }
                }
        }
        closedir(dirp);
        return NULL;
}


static 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);
                        sg_strlcpy(file, "/devices", sizeof file);
                        sg_strlcat(file, phys_path, sizeof file);
                        sg_strlcat(file, ":", sizeof file);
                        sg_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
static 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 -1;
        }

        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

#if defined(LINUX) || defined(CYGWIN)
char *sg_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;
                }
        }

        sg_set_error(SG_ERROR_PARSE, NULL);
        return NULL;
}

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

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

        return match_string;
}

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

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

        return num;
}
#endif

#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

/*      $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 sg_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 */
}

/*      $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 sg_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 */
}

int sg_update_string(char **dest, const char *src) {
        char *new;

        if (src == NULL) {
                /* We're being told to set it to NULL. */
                free(*dest);
                *dest = NULL;
                return 0;
        }

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

        strcpy(new, src);
        *dest = new;
        return 0;
}

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

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

        kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
        if(kvmd == NULL) {
                sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
        }
        return kvmd;
}

/* Can't think of a better name for this function */
kvm_t *sg_get_kvm2() {
        static kvm_t *kvmd2 = NULL;

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

        kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
        if(kvmd2 == NULL) {
                sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
        }
        return kvmd2;
}
#endif

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

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

        if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) {
                sg_set_error(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP");
                return NULL;
        }

        return &uvm;
}
#endif

int sg_init(){
        sg_set_error_with_errno(SG_ERROR_NONE, NULL, 0);

#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
        if (sg_get_kvm() == NULL) {
                return -1;
        }
        if (sg_get_kvm2() == 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 sg_drop_privileges() {
        if (setegid(getgid()) != 0) {
                sg_set_error(SG_ERROR_SETEGID, NULL);
                return -1;
        }
        if (seteuid(getuid()) != 0) {
                sg_set_error(SG_ERROR_SETEUID, NULL);
                return -1;
        }
        return 0;
}

void *sg_realloc(void *ptr, size_t size) {
        void *tmp = NULL;
        tmp = realloc(ptr, size);
        if(tmp == NULL) {
                sg_set_error(SG_ERROR_MALLOC, NULL);
        }
        return tmp;
}

Revision:	1.54
Committed:	Fri Jul 16 15:07:14 2004 UTC (19 years, 10 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.53:	+2 -2 lines
Log Message:	Add function to allow grabbing of the current errno. Should we store errno too maybe?
#	User	Rev	Content
1	tdb	1.23	/*
2	tdb	1.43	* i-scream libstatgrab
3	tdb	1.6	* http://www.i-scream.org
4	tdb	1.23	* Copyright (C) 2000-2004 i-scream
5	tdb	1.5	*
6	tdb	1.23	* 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	tdb	1.5	*
11	tdb	1.23	* This library is distributed in the hope that it will be useful,
12	tdb	1.5	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	tdb	1.23	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15	tdb	1.5	*
16	tdb	1.23	* 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	tdb	1.24	*
21	tdb	1.54	* $Id: tools.c,v 1.53 2004/05/30 17:07:53 ats Exp $
22	tdb	1.5	*/
23
24			#ifdef HAVE_CONFIG_H
25			#include "config.h"
26			#endif
27
28	pajs	1.1	#include <stdio.h>
29			#include <string.h>
30	pajs	1.3	#include <stdlib.h>
31	ats	1.18	#include <unistd.h>
32	pajs	1.3	#include <sys/types.h>
33	ats	1.9	#ifdef ALLBSD
34	ats	1.8	#include <fcntl.h>
35	tdb	1.29	#endif
36	tdb	1.34	#if (defined(FREEBSD) && !defined(FREEBSD5)) \|\| defined(DFBSD)
37	ats	1.8	#include <kvm.h>
38	tdb	1.35	#include <paths.h>
39	ats	1.8	#endif
40	ats	1.28	#if defined(NETBSD) \|\| defined(OPENBSD)
41	ats	1.9	#include <uvm/uvm_extern.h>
42	ats	1.28	#include <sys/param.h>
43			#include <sys/sysctl.h>
44	ats	1.9	#endif
45	pajs	1.1
46	ats	1.7	#include "tools.h"
47	tdb	1.46	#include "statgrab.h"
48	ats	1.7
49	pajs	1.14	#ifdef SOLARIS
50	pajs	1.27	#ifdef HAVE_LIBDEVINFO_H
51	pajs	1.14	#include <libdevinfo.h>
52	pajs	1.27	#endif
53	pajs	1.14	#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	pajs	1.26	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
65	pajs	1.14	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	pajs	1.26	#endif
75	pajs	1.14
76	pajs	1.26	#ifdef SOLARIS
77	ats	1.41	const char sg_get_svr_from_bsd(const char bsd){
78	pajs	1.26	#ifdef HAVE_LIBDEVINFO_H
79	pajs	1.14	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	pajs	1.26	#endif
83	pajs	1.14	return bsd;
84			}
85	pajs	1.26	#endif
86	pajs	1.14
87	pajs	1.26	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
88	ats	1.41	static void add_mapping(char bsd, char svr){
89	pajs	1.14	mapping_t *map_ptr;
90			mapping_t *map_end_ptr;
91
92			if (mapping == NULL){
93	ats	1.48	mapping = sg_malloc(sizeof(mapping_t));
94	pajs	1.14	if (mapping == NULL) return;
95			map_ptr = mapping;
96			}else{
97			/* See if its already been added */
98			for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
99			if( (!strcmp(map_ptr->bsd, bsd)) \|\| (!strcmp(map_ptr->svr, svr)) ){
100			return;
101			}
102			map_end_ptr = map_ptr;
103			}
104
105			/* We've reached end of list and not found the entry.. So we need to malloc
106			* new mapping_t
107			*/
108	ats	1.48	map_end_ptr->next = sg_malloc(sizeof(mapping_t));
109	pajs	1.14	if (map_end_ptr->next == NULL) return;
110			map_ptr = map_end_ptr->next;
111			}
112
113			map_ptr->next = NULL;
114	ats	1.47	map_ptr->bsd = NULL;
115			map_ptr->svr = NULL;
116			if (sg_update_string(&map_ptr->bsd, bsd) < 0
117			\|\| sg_update_string(&map_ptr->svr, svr) < 0) {
118			return;
119			}
120	pajs	1.14
121			return;
122			}
123
124	ats	1.41
125			static char read_dir(char disk_path){
126	pajs	1.14	DIR *dirp;
127	tdb	1.15	struct dirent *dp;
128			struct stat stbuf;
129	ats	1.47	char *svr_name = NULL;
130	tdb	1.15	char current_dir[MAXPATHLEN];
131			char file_name[MAXPATHLEN];
132			char temp_name[MAXPATHLEN];
133			char dir_dname[MAXPATHLEN];
134	pajs	1.14	char *dsk_dir;
135			int x;
136
137			dsk_dir = "/dev/osa/dev/dsk";
138	tdb	1.15	strncpy(current_dir, dsk_dir, sizeof current_dir);
139			if ((dirp = opendir(current_dir)) == NULL){
140	pajs	1.14	dsk_dir = "/dev/dsk";
141			snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
142			if ((dirp = opendir(current_dir)) == NULL){
143			return NULL;
144			}
145			}
146
147	tdb	1.15	while ((dp = readdir(dirp)) != NULL){
148	pajs	1.14	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
149			snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
150			stat(dir_dname,&stbuf);
151
152			if (S_ISBLK(stbuf.st_mode)){
153			x = readlink(dir_dname, file_name, sizeof(file_name));
154			file_name[x] = '\0';
155			if (strcmp(file_name, temp_name) == 0) {
156	ats	1.47	if (sg_update_string(&svr_name,
157	tdb	1.49	dp->d_name) < 0) {
158	ats	1.47	return NULL;
159			}
160	pajs	1.14	closedir(dirp);
161			return svr_name;
162			}
163			}
164			}
165	tdb	1.16	closedir(dirp);
166	pajs	1.14	return NULL;
167			}
168
169
170	ats	1.41	static int get_alias(char *alias){
171	pajs	1.14	char file[MAXPATHLEN];
172			di_node_t root_node;
173			di_node_t node;
174			di_minor_t minor = DI_MINOR_NIL;
175			char tmpnode[MAXPATHLEN];
176			char *phys_path;
177			char *minor_name;
178			char *value;
179			int instance;
180			if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
181	ats	1.45	return -1;
182	pajs	1.14	}
183			node = di_drv_first_node(alias, root_node);
184			while (node != DI_NODE_NIL) {
185			if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
186			instance = di_instance(node);
187			phys_path = di_devfs_path(node);
188			minor_name = di_minor_name(minor);
189			strcpy(tmpnode, alias);
190			sprintf(tmpnode, "%s%d", tmpnode, instance);
191	ats	1.41	sg_strlcpy(file, "/devices", sizeof file);
192			sg_strlcat(file, phys_path, sizeof file);
193			sg_strlcat(file, ":", sizeof file);
194			sg_strlcat(file, minor_name, sizeof file);
195	pajs	1.14	value = read_dir(file);
196			if (value != NULL){
197			add_mapping(tmpnode, value);
198			}
199			di_devfs_path_free(phys_path);
200			node = di_drv_next_node(node);
201			}else{
202			node = di_drv_next_node(node);
203			}
204	tdb	1.15	}
205	pajs	1.14	di_fini(root_node);
206	pajs	1.17	return 0;
207	pajs	1.14	}
208
209	pajs	1.22
210			#define BIG_ENOUGH 512
211	ats	1.41	static int build_mapping(){
212	pajs	1.22	char device_name[BIG_ENOUGH];
213	pajs	1.14	int x;
214	tdb	1.15	kstat_ctl_t *kc;
215			kstat_t *ksp;
216			kstat_io_t kios;
217	pajs	1.14
218	pajs	1.22	char driver_list[BIG_ENOUGH][BIG_ENOUGH];
219			int list_entries = 0;
220			int found;
221
222	pajs	1.14	if ((kc = kstat_open()) == NULL) {
223	ats	1.45	return -1;
224	tdb	1.15	}
225	pajs	1.14
226	tdb	1.15	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
227			if (!strcmp(ksp->ks_class, "disk")) {
228			if(ksp->ks_type != KSTAT_TYPE_IO) continue;
229			/* We dont want metadevices appearing as num_diskio */
230			if(strcmp(ksp->ks_module, "md")==0) continue;
231			if((kstat_read(kc, ksp, &kios))==-1) continue;
232	pajs	1.14	strncpy(device_name, ksp->ks_name, sizeof device_name);
233			for(x=0;x<(sizeof device_name);x++){
234			if( isdigit((int)device_name[x]) ) break;
235			}
236			if(x == sizeof device_name) x--;
237			device_name[x] = '\0';
238	pajs	1.22
239			/* Check if we've not already looked it up */
240			found = 0;
241			for(x=0;x<list_entries;x++){
242			if (x>=BIG_ENOUGH){
243			/* We've got bigger than we thought was massive */
244			/* If we hit this.. Make big enough bigger */
245	ats	1.45	return -1;
246	pajs	1.22	}
247			if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
248			found = 1;
249			break;
250			}
251			}
252
253			if(!found){
254			if((get_alias(device_name)) != 0){
255	ats	1.45	return -1;
256	pajs	1.22	}
257			strncpy(driver_list[x], device_name, BIG_ENOUGH);
258			list_entries++;
259	pajs	1.17	}
260	tdb	1.15	}
261	pajs	1.14	}
262	tdb	1.15
263	pajs	1.17	return 0;
264	pajs	1.14	}
265
266			#endif
267
268	tdb	1.52	#if defined(LINUX) \|\| defined(CYGWIN)
269	ats	1.41	char sg_f_read_line(FILE f, const char *string){
270	pajs	1.1	/* Max line length. 8k should be more than enough */
271			static char line[8192];
272
273	pajs	1.2	while((fgets(line, sizeof(line), f))!=NULL){
274	pajs	1.1	if(strncmp(string, line, strlen(string))==0){
275			return line;
276			}
277			}
278
279	tdb	1.51	sg_set_error(SG_ERROR_PARSE, NULL);
280	pajs	1.1	return NULL;
281	pajs	1.3	}
282
283	ats	1.41	char sg_get_string_match(char line, regmatch_t *match){
284	pajs	1.3	int len=match->rm_eo - match->rm_so;
285	ats	1.48	char *match_string=sg_malloc(len+1);
286	pajs	1.3
287			match_string=strncpy(match_string, line+match->rm_so, len);
288			match_string[len]='\0';
289
290			return match_string;
291			}
292	ats	1.7
293	tdb	1.52	long long sg_get_ll_match(char line, regmatch_t match){
294			char *ptr;
295			long long num;
296
297			ptr=line+match->rm_so;
298			num=atoll(ptr);
299
300			return num;
301			}
302			#endif
303	pajs	1.14
304	ats	1.13	#ifndef HAVE_ATOLL
305			static long long atoll(const char *s) {
306			long long value = 0;
307			int isneg = 0;
308
309			while (s == ' ' \|\| s == '\t') {
310			s++;
311			}
312			if (*s == '-') {
313			isneg = 1;
314			s++;
315			}
316			while (s >= '0' && s <= '9') {
317			value = (10 * value) + (*s - '0');
318			s++;
319			}
320			return (isneg ? -value : value);
321			}
322			#endif
323
324	ats	1.21	/* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */
325	pajs	1.19
326			/*
327			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
328			*
329			* Permission to use, copy, modify, and distribute this software for any
330			* purpose with or without fee is hereby granted, provided that the above
331			* copyright notice and this permission notice appear in all copies.
332			*
333			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
334			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
335			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
336			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
337			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
338			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
339			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
340			*/
341
342			/*
343			* Copy src to string dst of size siz. At most siz-1 characters
344			* will be copied. Always NUL terminates (unless siz == 0).
345			* Returns strlen(src); if retval >= siz, truncation occurred.
346			*/
347	ats	1.41	size_t sg_strlcpy(char dst, const char src, size_t siz){
348	tdb	1.49	register char *d = dst;
349			register const char *s = src;
350			register size_t n = siz;
351
352			/* Copy as many bytes as will fit */
353			if (n != 0 && --n != 0) {
354			do {
355			if ((d++ = s++) == 0)
356			break;
357			} while (--n != 0);
358			}
359
360			/* Not enough room in dst, add NUL and traverse rest of src */
361			if (n == 0) {
362			if (siz != 0)
363			d = '\0'; / NUL-terminate dst */
364			while (*s++)
365			;
366			}
367	pajs	1.19
368	tdb	1.49	return(s - src - 1); /* count does not include NUL */
369	pajs	1.19	}
370
371			/* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ */
372
373			/*
374			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
375			*
376			* Permission to use, copy, modify, and distribute this software for any
377			* purpose with or without fee is hereby granted, provided that the above
378			* copyright notice and this permission notice appear in all copies.
379			*
380			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
381			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
382			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
383			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
384			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
385			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
386			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
387			*/
388
389			/*
390			* Appends src to string dst of size siz (unlike strncat, siz is the
391			* full size of dst, not space left). At most siz-1 characters
392			* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
393			* Returns strlen(src) + MIN(siz, strlen(initial dst)).
394			* If retval >= siz, truncation occurred.
395			*/
396	ats	1.41	size_t sg_strlcat(char dst, const char src, size_t siz){
397	tdb	1.49	register char *d = dst;
398			register const char *s = src;
399			register size_t n = siz;
400			size_t dlen;
401
402			/* Find the end of dst and adjust bytes left but don't go past end */
403			while (n-- != 0 && *d != '\0')
404			d++;
405			dlen = d - dst;
406			n = siz - dlen;
407
408			if (n == 0)
409			return(dlen + strlen(s));
410			while (*s != '\0') {
411			if (n != 1) {
412			d++ = s;
413			n--;
414			}
415			s++;
416			}
417			*d = '\0';
418	pajs	1.19
419	tdb	1.49	return(dlen + (s - src)); /* count does not include NUL */
420	pajs	1.19	}
421
422	ats	1.42	int sg_update_string(char *dest, const char src) {
423	ats	1.37	char *new;
424
425	ats	1.42	if (src == NULL) {
426			/* We're being told to set it to NULL. */
427			free(*dest);
428			*dest = NULL;
429			return 0;
430			}
431
432	ats	1.48	new = sg_realloc(*dest, strlen(src) + 1);
433	ats	1.37	if (new == NULL) {
434	ats	1.42	return -1;
435	ats	1.37	}
436
437			strcpy(new, src);
438			*dest = new;
439	ats	1.42	return 0;
440	ats	1.8	}
441
442	tdb	1.34	#if (defined(FREEBSD) && !defined(FREEBSD5)) \|\| defined(DFBSD)
443	ats	1.41	kvm_t *sg_get_kvm() {
444	ats	1.8	static kvm_t *kvmd = NULL;
445
446			if (kvmd != NULL) {
447			return kvmd;
448			}
449
450			kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
451	tdb	1.51	if(kvmd == NULL) {
452			sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
453			}
454	ats	1.8	return kvmd;
455	pajs	1.1	}
456	tdb	1.34
457			/* Can't think of a better name for this function */
458	ats	1.41	kvm_t *sg_get_kvm2() {
459	tdb	1.34	static kvm_t *kvmd2 = NULL;
460
461			if (kvmd2 != NULL) {
462			return kvmd2;
463			}
464
465			kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
466	tdb	1.51	if(kvmd2 == NULL) {
467			sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
468			}
469	tdb	1.34	return kvmd2;
470			}
471	pajs	1.4	#endif
472	ats	1.9
473	ats	1.28	#if defined(NETBSD) \|\| defined(OPENBSD)
474	ats	1.41	struct uvmexp *sg_get_uvmexp() {
475	ats	1.28	int mib[2];
476	ats	1.44	size_t size = sizeof(struct uvmexp);
477			static struct uvmexp uvm;
478	ats	1.36	struct uvmexp *new;
479	ats	1.9
480	ats	1.28	mib[0] = CTL_VM;
481			mib[1] = VM_UVMEXP;
482
483	ats	1.44	if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) {
484	tdb	1.51	sg_set_error(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP");
485	ats	1.9	return NULL;
486			}
487
488	ats	1.44	return &uvm;
489	ats	1.9	}
490			#endif
491
492	ats	1.41	int sg_init(){
493	tdb	1.54	sg_set_error_with_errno(SG_ERROR_NONE, NULL, 0);
494	ats	1.53
495	tdb	1.33	#if (defined(FREEBSD) && !defined(FREEBSD5)) \|\| defined(DFBSD)
496	ats	1.41	if (sg_get_kvm() == NULL) {
497	ats	1.45	return -1;
498	ats	1.41	}
499			if (sg_get_kvm2() == NULL) {
500	ats	1.45	return -1;
501	ats	1.32	}
502	pajs	1.14	#endif
503			#ifdef SOLARIS
504	pajs	1.20	/* On solaris 7, this will fail if you are not root. But, everything
505			* will still work, just no disk mappings. So we will ignore the exit
506			* status of this, and carry on merrily.
507			*/
508	pajs	1.26	#ifdef HAVE_LIBDEVINFO_H
509	pajs	1.20	build_mapping();
510	pajs	1.25	#endif
511	pajs	1.10	#endif
512			return 0;
513			}
514	ats	1.18
515	ats	1.41	int sg_drop_privileges() {
516	tdb	1.51	if (setegid(getgid()) != 0) {
517			sg_set_error(SG_ERROR_SETEGID, NULL);
518			return -1;
519			}
520			if (seteuid(getuid()) != 0) {
521			sg_set_error(SG_ERROR_SETEUID, NULL);
522			return -1;
523			}
524	ats	1.18	return 0;
525	tdb	1.46	}
526
527			void sg_realloc(void ptr, size_t size) {
528			void *tmp = NULL;
529			tmp = realloc(ptr, size);
530			if(tmp == NULL) {
531	pajs	1.50	sg_set_error(SG_ERROR_MALLOC, NULL);
532	tdb	1.46	}
533			return tmp;
534	ats	1.18	}
535