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 1.58 2004/11/01 20:34:58 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
#ifdef HPUX
#include <sys/param.h>
#include <sys/pstat.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_with_errno(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP");
                return NULL;
        }

        return &uvm;
}
#endif

#ifdef HPUX
struct pst_static *sg_get_pstat_static() {
        static int got = 0;
        static struct pst_static pst;

        if (!got) {
                if (pstat_getstatic(&pst, sizeof pst, 1, 0) == -1) {
                        sg_set_error_with_errno(SG_ERROR_PSTAT,
                                                "pstat_static");
                        return NULL;
                }
                got = 1;
        }
        return &pst;
}
#endif

int sg_init(){
        sg_set_error(SG_ERROR_NONE, NULL);

#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() {
#ifdef HAVE_SETEGID
        if (setegid(getgid()) != 0) {
#elif defined(HAVE_SETRESGID)
        if (setresgid(getgid(), getgid(), getgid()) != 0) {
#else
        {
#endif
                sg_set_error_with_errno(SG_ERROR_SETEGID, NULL);
                return -1;
        }
#ifdef HAVE_SETEUID
        if (seteuid(getuid()) != 0) {
#elif defined(HAVE_SETRESUID)
        if (setresuid(getuid(), getuid(), getuid()) != 0) {
#else
        {
#endif
                sg_set_error_with_errno(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_with_errno(SG_ERROR_MALLOC, NULL);
        }
        return tmp;
}
Revision:	1.59
Committed:	Sat Nov 6 14:55:53 2004 UTC (19 years, 6 months ago) by ats
Content type:	text/plain
Branch:	MAIN
Changes since 1.58:	+22 -1 lines
Log Message:	Add sg_get_pstat_static for HP-UX. (Untested.)
#	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	ats	1.59	* $Id: tools.c,v 1.58 2004/11/01 20:34:58 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	ats	1.59	#ifdef HPUX
46			#include <sys/param.h>
47			#include <sys/pstat.h>
48			#endif
49	pajs	1.1
50	ats	1.7	#include "tools.h"
51	tdb	1.46	#include "statgrab.h"
52	ats	1.7
53	pajs	1.14	#ifdef SOLARIS
54	pajs	1.27	#ifdef HAVE_LIBDEVINFO_H
55	pajs	1.14	#include <libdevinfo.h>
56	pajs	1.27	#endif
57	pajs	1.14	#include <kstat.h>
58			#include <unistd.h>
59			#include <ctype.h>
60			#include <sys/types.h>
61			#include <sys/dkio.h>
62			#include <sys/stat.h>
63			#include <fcntl.h>
64			#include <sys/fcntl.h>
65			#include <dirent.h>
66			#endif
67
68	pajs	1.26	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
69	pajs	1.14	struct map{
70			char *bsd;
71			char *svr;
72
73			struct map *next;
74			};
75			typedef struct map mapping_t;
76
77			static mapping_t *mapping = NULL;
78	pajs	1.26	#endif
79	pajs	1.14
80	pajs	1.26	#ifdef SOLARIS
81	ats	1.41	const char sg_get_svr_from_bsd(const char bsd){
82	pajs	1.26	#ifdef HAVE_LIBDEVINFO_H
83	pajs	1.14	mapping_t *map_ptr;
84			for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next)
85			if(!strcmp(map_ptr->bsd, bsd)) return map_ptr->svr;
86	pajs	1.26	#endif
87	pajs	1.14	return bsd;
88			}
89	pajs	1.26	#endif
90	pajs	1.14
91	pajs	1.26	#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
92	ats	1.41	static void add_mapping(char bsd, char svr){
93	pajs	1.14	mapping_t *map_ptr;
94			mapping_t *map_end_ptr;
95
96			if (mapping == NULL){
97	ats	1.48	mapping = sg_malloc(sizeof(mapping_t));
98	pajs	1.14	if (mapping == NULL) return;
99			map_ptr = mapping;
100			}else{
101			/* See if its already been added */
102			for(map_ptr = mapping; map_ptr != NULL; map_ptr = map_ptr->next){
103			if( (!strcmp(map_ptr->bsd, bsd)) \|\| (!strcmp(map_ptr->svr, svr)) ){
104			return;
105			}
106			map_end_ptr = map_ptr;
107			}
108
109			/* We've reached end of list and not found the entry.. So we need to malloc
110			* new mapping_t
111			*/
112	ats	1.48	map_end_ptr->next = sg_malloc(sizeof(mapping_t));
113	pajs	1.14	if (map_end_ptr->next == NULL) return;
114			map_ptr = map_end_ptr->next;
115			}
116
117			map_ptr->next = NULL;
118	ats	1.47	map_ptr->bsd = NULL;
119			map_ptr->svr = NULL;
120			if (sg_update_string(&map_ptr->bsd, bsd) < 0
121			\|\| sg_update_string(&map_ptr->svr, svr) < 0) {
122			return;
123			}
124	pajs	1.14
125			return;
126			}
127
128	ats	1.41
129			static char read_dir(char disk_path){
130	pajs	1.14	DIR *dirp;
131	tdb	1.15	struct dirent *dp;
132			struct stat stbuf;
133	ats	1.47	char *svr_name = NULL;
134	tdb	1.15	char current_dir[MAXPATHLEN];
135			char file_name[MAXPATHLEN];
136			char temp_name[MAXPATHLEN];
137			char dir_dname[MAXPATHLEN];
138	pajs	1.14	char *dsk_dir;
139			int x;
140
141			dsk_dir = "/dev/osa/dev/dsk";
142	tdb	1.15	strncpy(current_dir, dsk_dir, sizeof current_dir);
143			if ((dirp = opendir(current_dir)) == NULL){
144	pajs	1.14	dsk_dir = "/dev/dsk";
145			snprintf(current_dir, sizeof current_dir, "%s", dsk_dir);
146			if ((dirp = opendir(current_dir)) == NULL){
147			return NULL;
148			}
149			}
150
151	tdb	1.15	while ((dp = readdir(dirp)) != NULL){
152	pajs	1.14	snprintf(temp_name, sizeof temp_name, "../..%s", disk_path);
153			snprintf(dir_dname, sizeof dir_dname, "%s/%s", dsk_dir, dp->d_name);
154			stat(dir_dname,&stbuf);
155
156			if (S_ISBLK(stbuf.st_mode)){
157			x = readlink(dir_dname, file_name, sizeof(file_name));
158			file_name[x] = '\0';
159			if (strcmp(file_name, temp_name) == 0) {
160	ats	1.47	if (sg_update_string(&svr_name,
161	tdb	1.49	dp->d_name) < 0) {
162	ats	1.47	return NULL;
163			}
164	pajs	1.14	closedir(dirp);
165			return svr_name;
166			}
167			}
168			}
169	tdb	1.16	closedir(dirp);
170	pajs	1.14	return NULL;
171			}
172
173
174	ats	1.41	static int get_alias(char *alias){
175	pajs	1.14	char file[MAXPATHLEN];
176			di_node_t root_node;
177			di_node_t node;
178			di_minor_t minor = DI_MINOR_NIL;
179			char tmpnode[MAXPATHLEN];
180			char *phys_path;
181			char *minor_name;
182			char *value;
183			int instance;
184			if ((root_node = di_init("/", DINFOCPYALL)) == DI_NODE_NIL) {
185	ats	1.45	return -1;
186	pajs	1.14	}
187			node = di_drv_first_node(alias, root_node);
188			while (node != DI_NODE_NIL) {
189			if ((minor = di_minor_next(node, DI_MINOR_NIL)) != DI_MINOR_NIL) {
190			instance = di_instance(node);
191			phys_path = di_devfs_path(node);
192			minor_name = di_minor_name(minor);
193			strcpy(tmpnode, alias);
194			sprintf(tmpnode, "%s%d", tmpnode, instance);
195	ats	1.41	sg_strlcpy(file, "/devices", sizeof file);
196			sg_strlcat(file, phys_path, sizeof file);
197			sg_strlcat(file, ":", sizeof file);
198			sg_strlcat(file, minor_name, sizeof file);
199	pajs	1.14	value = read_dir(file);
200			if (value != NULL){
201			add_mapping(tmpnode, value);
202			}
203			di_devfs_path_free(phys_path);
204			node = di_drv_next_node(node);
205			}else{
206			node = di_drv_next_node(node);
207			}
208	tdb	1.15	}
209	pajs	1.14	di_fini(root_node);
210	pajs	1.17	return 0;
211	pajs	1.14	}
212
213	pajs	1.22
214			#define BIG_ENOUGH 512
215	ats	1.41	static int build_mapping(){
216	pajs	1.22	char device_name[BIG_ENOUGH];
217	pajs	1.14	int x;
218	tdb	1.15	kstat_ctl_t *kc;
219			kstat_t *ksp;
220			kstat_io_t kios;
221	pajs	1.14
222	pajs	1.22	char driver_list[BIG_ENOUGH][BIG_ENOUGH];
223			int list_entries = 0;
224			int found;
225
226	pajs	1.14	if ((kc = kstat_open()) == NULL) {
227	ats	1.45	return -1;
228	tdb	1.15	}
229	pajs	1.14
230	tdb	1.15	for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
231			if (!strcmp(ksp->ks_class, "disk")) {
232			if(ksp->ks_type != KSTAT_TYPE_IO) continue;
233			/* We dont want metadevices appearing as num_diskio */
234			if(strcmp(ksp->ks_module, "md")==0) continue;
235			if((kstat_read(kc, ksp, &kios))==-1) continue;
236	pajs	1.14	strncpy(device_name, ksp->ks_name, sizeof device_name);
237			for(x=0;x<(sizeof device_name);x++){
238			if( isdigit((int)device_name[x]) ) break;
239			}
240			if(x == sizeof device_name) x--;
241			device_name[x] = '\0';
242	pajs	1.22
243			/* Check if we've not already looked it up */
244			found = 0;
245			for(x=0;x<list_entries;x++){
246			if (x>=BIG_ENOUGH){
247			/* We've got bigger than we thought was massive */
248			/* If we hit this.. Make big enough bigger */
249	ats	1.45	return -1;
250	pajs	1.22	}
251			if( !strncmp(driver_list[x], device_name, BIG_ENOUGH)){
252			found = 1;
253			break;
254			}
255			}
256
257			if(!found){
258			if((get_alias(device_name)) != 0){
259	ats	1.45	return -1;
260	pajs	1.22	}
261			strncpy(driver_list[x], device_name, BIG_ENOUGH);
262			list_entries++;
263	pajs	1.17	}
264	tdb	1.15	}
265	pajs	1.14	}
266	tdb	1.15
267	pajs	1.17	return 0;
268	pajs	1.14	}
269
270			#endif
271
272	tdb	1.52	#if defined(LINUX) \|\| defined(CYGWIN)
273	ats	1.41	char sg_f_read_line(FILE f, const char *string){
274	pajs	1.1	/* Max line length. 8k should be more than enough */
275			static char line[8192];
276
277	pajs	1.2	while((fgets(line, sizeof(line), f))!=NULL){
278	pajs	1.1	if(strncmp(string, line, strlen(string))==0){
279			return line;
280			}
281			}
282
283	tdb	1.51	sg_set_error(SG_ERROR_PARSE, NULL);
284	pajs	1.1	return NULL;
285	pajs	1.3	}
286
287	ats	1.41	char sg_get_string_match(char line, regmatch_t *match){
288	pajs	1.3	int len=match->rm_eo - match->rm_so;
289	ats	1.48	char *match_string=sg_malloc(len+1);
290	pajs	1.3
291			match_string=strncpy(match_string, line+match->rm_so, len);
292			match_string[len]='\0';
293
294			return match_string;
295			}
296	ats	1.7
297	tdb	1.52	long long sg_get_ll_match(char line, regmatch_t match){
298			char *ptr;
299			long long num;
300
301			ptr=line+match->rm_so;
302			num=atoll(ptr);
303
304			return num;
305			}
306			#endif
307	pajs	1.14
308	ats	1.13	#ifndef HAVE_ATOLL
309			static long long atoll(const char *s) {
310			long long value = 0;
311			int isneg = 0;
312
313			while (s == ' ' \|\| s == '\t') {
314			s++;
315			}
316			if (*s == '-') {
317			isneg = 1;
318			s++;
319			}
320			while (s >= '0' && s <= '9') {
321			value = (10 * value) + (*s - '0');
322			s++;
323			}
324			return (isneg ? -value : value);
325			}
326			#endif
327
328	ats	1.21	/* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */
329	pajs	1.19
330			/*
331			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
332			*
333			* Permission to use, copy, modify, and distribute this software for any
334			* purpose with or without fee is hereby granted, provided that the above
335			* copyright notice and this permission notice appear in all copies.
336			*
337			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
338			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
339			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
340			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
341			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
342			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
343			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
344			*/
345
346			/*
347			* Copy src to string dst of size siz. At most siz-1 characters
348			* will be copied. Always NUL terminates (unless siz == 0).
349			* Returns strlen(src); if retval >= siz, truncation occurred.
350			*/
351	ats	1.41	size_t sg_strlcpy(char dst, const char src, size_t siz){
352	tdb	1.49	register char *d = dst;
353			register const char *s = src;
354			register size_t n = siz;
355
356			/* Copy as many bytes as will fit */
357			if (n != 0 && --n != 0) {
358			do {
359			if ((d++ = s++) == 0)
360			break;
361			} while (--n != 0);
362			}
363
364			/* Not enough room in dst, add NUL and traverse rest of src */
365			if (n == 0) {
366			if (siz != 0)
367			d = '\0'; / NUL-terminate dst */
368			while (*s++)
369			;
370			}
371	pajs	1.19
372	tdb	1.49	return(s - src - 1); /* count does not include NUL */
373	pajs	1.19	}
374
375			/* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ */
376
377			/*
378			* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
379			*
380			* Permission to use, copy, modify, and distribute this software for any
381			* purpose with or without fee is hereby granted, provided that the above
382			* copyright notice and this permission notice appear in all copies.
383			*
384			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
385			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
386			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
387			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
388			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
389			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
390			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
391			*/
392
393			/*
394			* Appends src to string dst of size siz (unlike strncat, siz is the
395			* full size of dst, not space left). At most siz-1 characters
396			* will be copied. Always NUL terminates (unless siz <= strlen(dst)).
397			* Returns strlen(src) + MIN(siz, strlen(initial dst)).
398			* If retval >= siz, truncation occurred.
399			*/
400	ats	1.41	size_t sg_strlcat(char dst, const char src, size_t siz){
401	tdb	1.49	register char *d = dst;
402			register const char *s = src;
403			register size_t n = siz;
404			size_t dlen;
405
406			/* Find the end of dst and adjust bytes left but don't go past end */
407			while (n-- != 0 && *d != '\0')
408			d++;
409			dlen = d - dst;
410			n = siz - dlen;
411
412			if (n == 0)
413			return(dlen + strlen(s));
414			while (*s != '\0') {
415			if (n != 1) {
416			d++ = s;
417			n--;
418			}
419			s++;
420			}
421			*d = '\0';
422	pajs	1.19
423	tdb	1.49	return(dlen + (s - src)); /* count does not include NUL */
424	pajs	1.19	}
425
426	ats	1.42	int sg_update_string(char *dest, const char src) {
427	ats	1.37	char *new;
428
429	ats	1.42	if (src == NULL) {
430			/* We're being told to set it to NULL. */
431			free(*dest);
432			*dest = NULL;
433			return 0;
434			}
435
436	ats	1.48	new = sg_realloc(*dest, strlen(src) + 1);
437	ats	1.37	if (new == NULL) {
438	ats	1.42	return -1;
439	ats	1.37	}
440
441			strcpy(new, src);
442			*dest = new;
443	ats	1.42	return 0;
444	ats	1.8	}
445
446	tdb	1.34	#if (defined(FREEBSD) && !defined(FREEBSD5)) \|\| defined(DFBSD)
447	ats	1.41	kvm_t *sg_get_kvm() {
448	ats	1.8	static kvm_t *kvmd = NULL;
449
450			if (kvmd != NULL) {
451			return kvmd;
452			}
453
454			kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
455	tdb	1.51	if(kvmd == NULL) {
456			sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
457			}
458	ats	1.8	return kvmd;
459	pajs	1.1	}
460	tdb	1.34
461			/* Can't think of a better name for this function */
462	ats	1.41	kvm_t *sg_get_kvm2() {
463	tdb	1.34	static kvm_t *kvmd2 = NULL;
464
465			if (kvmd2 != NULL) {
466			return kvmd2;
467			}
468
469			kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
470	tdb	1.51	if(kvmd2 == NULL) {
471			sg_set_error(SG_ERROR_KVM_OPENFILES, NULL);
472			}
473	tdb	1.34	return kvmd2;
474			}
475	pajs	1.4	#endif
476	ats	1.9
477	ats	1.28	#if defined(NETBSD) \|\| defined(OPENBSD)
478	ats	1.41	struct uvmexp *sg_get_uvmexp() {
479	ats	1.28	int mib[2];
480	ats	1.44	size_t size = sizeof(struct uvmexp);
481			static struct uvmexp uvm;
482	ats	1.36	struct uvmexp *new;
483	ats	1.9
484	ats	1.28	mib[0] = CTL_VM;
485			mib[1] = VM_UVMEXP;
486
487	ats	1.44	if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) {
488	ats	1.56	sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP");
489	ats	1.9	return NULL;
490			}
491
492	ats	1.44	return &uvm;
493	ats	1.59	}
494			#endif
495
496			#ifdef HPUX
497			struct pst_static *sg_get_pstat_static() {
498			static int got = 0;
499			static struct pst_static pst;
500
501			if (!got) {
502			if (pstat_getstatic(&pst, sizeof pst, 1, 0) == -1) {
503			sg_set_error_with_errno(SG_ERROR_PSTAT,
504			"pstat_static");
505			return NULL;
506			}
507			got = 1;
508			}
509			return &pst;
510	ats	1.9	}
511			#endif
512
513	ats	1.41	int sg_init(){
514	tdb	1.55	sg_set_error(SG_ERROR_NONE, NULL);
515	ats	1.53
516	tdb	1.33	#if (defined(FREEBSD) && !defined(FREEBSD5)) \|\| defined(DFBSD)
517	ats	1.41	if (sg_get_kvm() == NULL) {
518	ats	1.45	return -1;
519	ats	1.41	}
520			if (sg_get_kvm2() == NULL) {
521	ats	1.45	return -1;
522	ats	1.32	}
523	pajs	1.14	#endif
524			#ifdef SOLARIS
525	pajs	1.20	/* On solaris 7, this will fail if you are not root. But, everything
526			* will still work, just no disk mappings. So we will ignore the exit
527			* status of this, and carry on merrily.
528			*/
529	pajs	1.26	#ifdef HAVE_LIBDEVINFO_H
530	pajs	1.20	build_mapping();
531	pajs	1.25	#endif
532	pajs	1.10	#endif
533			return 0;
534			}
535	ats	1.18
536	ats	1.41	int sg_drop_privileges() {
537	tdb	1.57	#ifdef HAVE_SETEGID
538	tdb	1.51	if (setegid(getgid()) != 0) {
539	tdb	1.57	#elif defined(HAVE_SETRESGID)
540			if (setresgid(getgid(), getgid(), getgid()) != 0) {
541			#else
542			{
543			#endif
544	ats	1.56	sg_set_error_with_errno(SG_ERROR_SETEGID, NULL);
545	tdb	1.51	return -1;
546			}
547	tdb	1.57	#ifdef HAVE_SETEUID
548	tdb	1.51	if (seteuid(getuid()) != 0) {
549	tdb	1.57	#elif defined(HAVE_SETRESUID)
550			if (setresuid(getuid(), getuid(), getuid()) != 0) {
551			#else
552			{
553			#endif
554	ats	1.56	sg_set_error_with_errno(SG_ERROR_SETEUID, NULL);
555	tdb	1.51	return -1;
556			}
557	ats	1.18	return 0;
558	tdb	1.46	}
559
560			void sg_realloc(void ptr, size_t size) {
561			void *tmp = NULL;
562			tmp = realloc(ptr, size);
563			if(tmp == NULL) {
564	ats	1.56	sg_set_error_with_errno(SG_ERROR_MALLOC, NULL);
565	tdb	1.46	}
566			return tmp;
567	ats	1.18	}