1 |
/* |
2 |
* i-scream libstatgrab |
3 |
* http://www.i-scream.org |
4 |
* Copyright (C) 2000-2004 i-scream |
5 |
* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
8 |
* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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* 02111-1307 USA |
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* |
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* $Id: tools.c,v 1.60 2004/11/06 19:09:00 tdb Exp $ |
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*/ |
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|
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#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 |
#ifdef ALLBSD |
34 |
#include <fcntl.h> |
35 |
#endif |
36 |
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD) |
37 |
#include <kvm.h> |
38 |
#include <paths.h> |
39 |
#endif |
40 |
#if defined(NETBSD) || defined(OPENBSD) |
41 |
#include <uvm/uvm_extern.h> |
42 |
#include <sys/param.h> |
43 |
#include <sys/sysctl.h> |
44 |
#endif |
45 |
#ifdef HPUX |
46 |
#include <sys/param.h> |
47 |
#include <sys/pstat.h> |
48 |
#endif |
49 |
|
50 |
#include "tools.h" |
51 |
#include "statgrab.h" |
52 |
|
53 |
#ifdef SOLARIS |
54 |
#ifdef HAVE_LIBDEVINFO_H |
55 |
#include <libdevinfo.h> |
56 |
#endif |
57 |
#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 |
#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H) |
69 |
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 |
#endif |
79 |
|
80 |
#ifdef SOLARIS |
81 |
const char *sg_get_svr_from_bsd(const char *bsd){ |
82 |
#ifdef HAVE_LIBDEVINFO_H |
83 |
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 |
#endif |
87 |
return bsd; |
88 |
} |
89 |
#endif |
90 |
|
91 |
#if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H) |
92 |
static void add_mapping(char *bsd, char *svr){ |
93 |
mapping_t *map_ptr; |
94 |
mapping_t *map_end_ptr; |
95 |
|
96 |
if (mapping == NULL){ |
97 |
mapping = sg_malloc(sizeof(mapping_t)); |
98 |
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 |
map_end_ptr->next = sg_malloc(sizeof(mapping_t)); |
113 |
if (map_end_ptr->next == NULL) return; |
114 |
map_ptr = map_end_ptr->next; |
115 |
} |
116 |
|
117 |
map_ptr->next = NULL; |
118 |
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 |
|
125 |
return; |
126 |
} |
127 |
|
128 |
|
129 |
static char *read_dir(char *disk_path){ |
130 |
DIR *dirp; |
131 |
struct dirent *dp; |
132 |
struct stat stbuf; |
133 |
char *svr_name = NULL; |
134 |
char current_dir[MAXPATHLEN]; |
135 |
char file_name[MAXPATHLEN]; |
136 |
char temp_name[MAXPATHLEN]; |
137 |
char dir_dname[MAXPATHLEN]; |
138 |
char *dsk_dir; |
139 |
int x; |
140 |
|
141 |
dsk_dir = "/dev/osa/dev/dsk"; |
142 |
strncpy(current_dir, dsk_dir, sizeof current_dir); |
143 |
if ((dirp = opendir(current_dir)) == NULL){ |
144 |
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 |
while ((dp = readdir(dirp)) != NULL){ |
152 |
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 |
if (sg_update_string(&svr_name, |
161 |
dp->d_name) < 0) { |
162 |
return NULL; |
163 |
} |
164 |
closedir(dirp); |
165 |
return svr_name; |
166 |
} |
167 |
} |
168 |
} |
169 |
closedir(dirp); |
170 |
return NULL; |
171 |
} |
172 |
|
173 |
|
174 |
static int get_alias(char *alias){ |
175 |
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 |
return -1; |
186 |
} |
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 |
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 |
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 |
} |
209 |
di_fini(root_node); |
210 |
return 0; |
211 |
} |
212 |
|
213 |
|
214 |
#define BIG_ENOUGH 512 |
215 |
static int build_mapping(){ |
216 |
char device_name[BIG_ENOUGH]; |
217 |
int x; |
218 |
kstat_ctl_t *kc; |
219 |
kstat_t *ksp; |
220 |
kstat_io_t kios; |
221 |
|
222 |
char driver_list[BIG_ENOUGH][BIG_ENOUGH]; |
223 |
int list_entries = 0; |
224 |
int found; |
225 |
|
226 |
if ((kc = kstat_open()) == NULL) { |
227 |
return -1; |
228 |
} |
229 |
|
230 |
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 |
strncpy(device_name, ksp->ks_name, sizeof device_name); |
237 |
for(x=0;x<(int)(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 |
|
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 |
return -1; |
250 |
} |
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 |
return -1; |
260 |
} |
261 |
strncpy(driver_list[x], device_name, BIG_ENOUGH); |
262 |
list_entries++; |
263 |
} |
264 |
} |
265 |
} |
266 |
|
267 |
return 0; |
268 |
} |
269 |
|
270 |
#endif |
271 |
|
272 |
#if defined(LINUX) || defined(CYGWIN) |
273 |
char *sg_f_read_line(FILE *f, const char *string){ |
274 |
/* Max line length. 8k should be more than enough */ |
275 |
static char line[8192]; |
276 |
|
277 |
while((fgets(line, sizeof(line), f))!=NULL){ |
278 |
if(strncmp(string, line, strlen(string))==0){ |
279 |
return line; |
280 |
} |
281 |
} |
282 |
|
283 |
sg_set_error(SG_ERROR_PARSE, NULL); |
284 |
return NULL; |
285 |
} |
286 |
|
287 |
char *sg_get_string_match(char *line, regmatch_t *match){ |
288 |
int len=match->rm_eo - match->rm_so; |
289 |
char *match_string=sg_malloc(len+1); |
290 |
|
291 |
match_string=strncpy(match_string, line+match->rm_so, len); |
292 |
match_string[len]='\0'; |
293 |
|
294 |
return match_string; |
295 |
} |
296 |
|
297 |
/* FIXME do Linux and Cygwin always have atoll? */ |
298 |
#ifndef HAVE_ATOLL |
299 |
static long long atoll(const char *s) { |
300 |
long long value = 0; |
301 |
int isneg = 0; |
302 |
|
303 |
while (*s == ' ' || *s == '\t') { |
304 |
s++; |
305 |
} |
306 |
if (*s == '-') { |
307 |
isneg = 1; |
308 |
s++; |
309 |
} |
310 |
while (*s >= '0' && *s <= '9') { |
311 |
value = (10 * value) + (*s - '0'); |
312 |
s++; |
313 |
} |
314 |
return (isneg ? -value : value); |
315 |
} |
316 |
#endif |
317 |
|
318 |
long long sg_get_ll_match(char *line, regmatch_t *match){ |
319 |
char *ptr; |
320 |
long long num; |
321 |
|
322 |
ptr=line+match->rm_so; |
323 |
num=atoll(ptr); |
324 |
|
325 |
return num; |
326 |
} |
327 |
#endif |
328 |
|
329 |
/* $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $ */ |
330 |
|
331 |
/* |
332 |
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> |
333 |
* |
334 |
* Permission to use, copy, modify, and distribute this software for any |
335 |
* purpose with or without fee is hereby granted, provided that the above |
336 |
* copyright notice and this permission notice appear in all copies. |
337 |
* |
338 |
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
339 |
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
340 |
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
341 |
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
342 |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
343 |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
344 |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
345 |
*/ |
346 |
|
347 |
/* |
348 |
* Copy src to string dst of size siz. At most siz-1 characters |
349 |
* will be copied. Always NUL terminates (unless siz == 0). |
350 |
* Returns strlen(src); if retval >= siz, truncation occurred. |
351 |
*/ |
352 |
size_t sg_strlcpy(char *dst, const char *src, size_t siz){ |
353 |
register char *d = dst; |
354 |
register const char *s = src; |
355 |
register size_t n = siz; |
356 |
|
357 |
/* Copy as many bytes as will fit */ |
358 |
if (n != 0 && --n != 0) { |
359 |
do { |
360 |
if ((*d++ = *s++) == 0) |
361 |
break; |
362 |
} while (--n != 0); |
363 |
} |
364 |
|
365 |
/* Not enough room in dst, add NUL and traverse rest of src */ |
366 |
if (n == 0) { |
367 |
if (siz != 0) |
368 |
*d = '\0'; /* NUL-terminate dst */ |
369 |
while (*s++) |
370 |
; |
371 |
} |
372 |
|
373 |
return(s - src - 1); /* count does not include NUL */ |
374 |
} |
375 |
|
376 |
/* $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $ */ |
377 |
|
378 |
/* |
379 |
* Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> |
380 |
* |
381 |
* Permission to use, copy, modify, and distribute this software for any |
382 |
* purpose with or without fee is hereby granted, provided that the above |
383 |
* copyright notice and this permission notice appear in all copies. |
384 |
* |
385 |
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
386 |
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
387 |
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
388 |
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
389 |
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
390 |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
391 |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
392 |
*/ |
393 |
|
394 |
/* |
395 |
* Appends src to string dst of size siz (unlike strncat, siz is the |
396 |
* full size of dst, not space left). At most siz-1 characters |
397 |
* will be copied. Always NUL terminates (unless siz <= strlen(dst)). |
398 |
* Returns strlen(src) + MIN(siz, strlen(initial dst)). |
399 |
* If retval >= siz, truncation occurred. |
400 |
*/ |
401 |
size_t sg_strlcat(char *dst, const char *src, size_t siz){ |
402 |
register char *d = dst; |
403 |
register const char *s = src; |
404 |
register size_t n = siz; |
405 |
size_t dlen; |
406 |
|
407 |
/* Find the end of dst and adjust bytes left but don't go past end */ |
408 |
while (n-- != 0 && *d != '\0') |
409 |
d++; |
410 |
dlen = d - dst; |
411 |
n = siz - dlen; |
412 |
|
413 |
if (n == 0) |
414 |
return(dlen + strlen(s)); |
415 |
while (*s != '\0') { |
416 |
if (n != 1) { |
417 |
*d++ = *s; |
418 |
n--; |
419 |
} |
420 |
s++; |
421 |
} |
422 |
*d = '\0'; |
423 |
|
424 |
return(dlen + (s - src)); /* count does not include NUL */ |
425 |
} |
426 |
|
427 |
int sg_update_string(char **dest, const char *src) { |
428 |
char *new; |
429 |
|
430 |
if (src == NULL) { |
431 |
/* We're being told to set it to NULL. */ |
432 |
free(*dest); |
433 |
*dest = NULL; |
434 |
return 0; |
435 |
} |
436 |
|
437 |
new = sg_realloc(*dest, strlen(src) + 1); |
438 |
if (new == NULL) { |
439 |
return -1; |
440 |
} |
441 |
|
442 |
strcpy(new, src); |
443 |
*dest = new; |
444 |
return 0; |
445 |
} |
446 |
|
447 |
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD) |
448 |
kvm_t *sg_get_kvm() { |
449 |
static kvm_t *kvmd = NULL; |
450 |
|
451 |
if (kvmd != NULL) { |
452 |
return kvmd; |
453 |
} |
454 |
|
455 |
kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL); |
456 |
if(kvmd == NULL) { |
457 |
sg_set_error(SG_ERROR_KVM_OPENFILES, NULL); |
458 |
} |
459 |
return kvmd; |
460 |
} |
461 |
|
462 |
/* Can't think of a better name for this function */ |
463 |
kvm_t *sg_get_kvm2() { |
464 |
static kvm_t *kvmd2 = NULL; |
465 |
|
466 |
if (kvmd2 != NULL) { |
467 |
return kvmd2; |
468 |
} |
469 |
|
470 |
kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL); |
471 |
if(kvmd2 == NULL) { |
472 |
sg_set_error(SG_ERROR_KVM_OPENFILES, NULL); |
473 |
} |
474 |
return kvmd2; |
475 |
} |
476 |
#endif |
477 |
|
478 |
#if defined(NETBSD) || defined(OPENBSD) |
479 |
struct uvmexp *sg_get_uvmexp() { |
480 |
int mib[2]; |
481 |
size_t size = sizeof(struct uvmexp); |
482 |
static struct uvmexp uvm; |
483 |
struct uvmexp *new; |
484 |
|
485 |
mib[0] = CTL_VM; |
486 |
mib[1] = VM_UVMEXP; |
487 |
|
488 |
if (sysctl(mib, 2, &uvm, &size, NULL, 0) < 0) { |
489 |
sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_VM.VM_UVMEXP"); |
490 |
return NULL; |
491 |
} |
492 |
|
493 |
return &uvm; |
494 |
} |
495 |
#endif |
496 |
|
497 |
#ifdef HPUX |
498 |
struct pst_static *sg_get_pstat_static() { |
499 |
static int got = 0; |
500 |
static struct pst_static pst; |
501 |
|
502 |
if (!got) { |
503 |
if (pstat_getstatic(&pst, sizeof pst, 1, 0) == -1) { |
504 |
sg_set_error_with_errno(SG_ERROR_PSTAT, |
505 |
"pstat_static"); |
506 |
return NULL; |
507 |
} |
508 |
got = 1; |
509 |
} |
510 |
return &pst; |
511 |
} |
512 |
#endif |
513 |
|
514 |
int sg_init(){ |
515 |
sg_set_error(SG_ERROR_NONE, NULL); |
516 |
|
517 |
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD) |
518 |
if (sg_get_kvm() == NULL) { |
519 |
return -1; |
520 |
} |
521 |
if (sg_get_kvm2() == NULL) { |
522 |
return -1; |
523 |
} |
524 |
#endif |
525 |
#ifdef SOLARIS |
526 |
/* On solaris 7, this will fail if you are not root. But, everything |
527 |
* will still work, just no disk mappings. So we will ignore the exit |
528 |
* status of this, and carry on merrily. |
529 |
*/ |
530 |
#ifdef HAVE_LIBDEVINFO_H |
531 |
build_mapping(); |
532 |
#endif |
533 |
#endif |
534 |
return 0; |
535 |
} |
536 |
|
537 |
int sg_drop_privileges() { |
538 |
#ifdef HAVE_SETEGID |
539 |
if (setegid(getgid()) != 0) { |
540 |
#elif defined(HAVE_SETRESGID) |
541 |
if (setresgid(getgid(), getgid(), getgid()) != 0) { |
542 |
#else |
543 |
{ |
544 |
#endif |
545 |
sg_set_error_with_errno(SG_ERROR_SETEGID, NULL); |
546 |
return -1; |
547 |
} |
548 |
#ifdef HAVE_SETEUID |
549 |
if (seteuid(getuid()) != 0) { |
550 |
#elif defined(HAVE_SETRESUID) |
551 |
if (setresuid(getuid(), getuid(), getuid()) != 0) { |
552 |
#else |
553 |
{ |
554 |
#endif |
555 |
sg_set_error_with_errno(SG_ERROR_SETEUID, NULL); |
556 |
return -1; |
557 |
} |
558 |
return 0; |
559 |
} |
560 |
|
561 |
void *sg_realloc(void *ptr, size_t size) { |
562 |
void *tmp = NULL; |
563 |
tmp = realloc(ptr, size); |
564 |
if(tmp == NULL) { |
565 |
sg_set_error_with_errno(SG_ERROR_MALLOC, NULL); |
566 |
} |
567 |
return tmp; |
568 |
} |