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root/i-scream/projects/libstatgrab/src/libstatgrab/tools.c
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Comparing projects/libstatgrab/src/libstatgrab/tools.c (file contents):
Revision 1.25 by pajs, Tue Feb 10 16:07:43 2004 UTC vs.
Revision 1.41 by ats, Mon Apr 5 15:40:15 2004 UTC

# Line 33 | Line 33
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 < #ifdef NETBSD
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>
# Line 54 | Line 61
61   #include <dirent.h>
62   #endif
63  
64 < #if defined(SOLARIS) && !defined(HAVE_LIBDEVINFO_H)
64 > #if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
65   struct map{
66          char *bsd;
67          char *svr;
# Line 64 | Line 71 | struct map{
71   typedef struct map mapping_t;
72  
73   static mapping_t *mapping = NULL;
74 + #endif
75  
76 < char *get_svr_from_bsd(char *bsd){
76 > #ifdef SOLARIS
77 > const char *sg_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 <
82 > #endif
83          return bsd;
84   }
85 + #endif
86  
87 < void add_mapping(char *bsd, char *svr){
87 > #if defined(SOLARIS) && defined(HAVE_LIBDEVINFO_H)
88 > static void add_mapping(char *bsd, char *svr){
89          mapping_t *map_ptr;
90          mapping_t *map_end_ptr;
91  
80        bsd = strdup(bsd);
81        svr = strdup(svr);
82
92          if (mapping == NULL){
93                  mapping = malloc(sizeof(mapping_t));
94                  if (mapping == NULL) return;
# Line 102 | Line 111 | void add_mapping(char *bsd, char *svr){
111          }
112  
113          map_ptr->next = NULL;
114 <        map_ptr->bsd = bsd;
115 <        map_ptr->svr = svr;
114 >        map_ptr->bsd = strdup(bsd);
115 >        map_ptr->svr = strdup(svr);
116  
117          return;
118   }
119  
120 < char *read_dir(char *disk_path){
120 >
121 > static char *read_dir(char *disk_path){
122          DIR *dirp;
123          struct dirent *dp;
124          struct stat stbuf;
# Line 150 | Line 160 | char *read_dir(char *disk_path){
160   }
161  
162  
163 <
154 < int get_alias(char *alias){
163 > static int get_alias(char *alias){
164          char file[MAXPATHLEN];
165          di_node_t root_node;
166          di_node_t node;
# Line 172 | Line 181 | int get_alias(char *alias){
181                          minor_name = di_minor_name(minor);
182                          strcpy(tmpnode, alias);
183                          sprintf(tmpnode, "%s%d", tmpnode, instance);
184 <                        strlcpy(file, "/devices", sizeof file);
185 <                        strlcat(file, phys_path, sizeof file);
186 <                        strlcat(file, ":", sizeof file);
187 <                        strlcat(file, minor_name, sizeof file);
184 >                        sg_strlcpy(file, "/devices", sizeof file);
185 >                        sg_strlcat(file, phys_path, sizeof file);
186 >                        sg_strlcat(file, ":", sizeof file);
187 >                        sg_strlcat(file, minor_name, sizeof file);
188                          value = read_dir(file);
189                          if (value != NULL){
190                                  add_mapping(tmpnode, value);
# Line 192 | Line 201 | int get_alias(char *alias){
201  
202  
203   #define BIG_ENOUGH 512
204 < int build_mapping(){
204 > static int build_mapping(){
205          char device_name[BIG_ENOUGH];
206          int x;
207          kstat_ctl_t *kc;
# Line 204 | Line 213 | int build_mapping(){
213          int found;
214  
215          if ((kc = kstat_open()) == NULL) {
216 <                return;
216 >                return 1;
217          }
218  
219          for (ksp = kc->kc_chain; ksp; ksp = ksp->ks_next) {
# Line 251 | Line 260 | int build_mapping(){
260  
261  
262  
263 < char *f_read_line(FILE *f, const char *string){
263 > char *sg_f_read_line(FILE *f, const char *string){
264          /* Max line length. 8k should be more than enough */
265          static char line[8192];
266  
# Line 264 | Line 273 | char *f_read_line(FILE *f, const char *string){
273          return NULL;
274   }
275  
276 < char *get_string_match(char *line, regmatch_t *match){
276 > char *sg_get_string_match(char *line, regmatch_t *match){
277          int len=match->rm_eo - match->rm_so;
278          char *match_string=malloc(len+1);
279  
# Line 296 | Line 305 | static long long atoll(const char *s) {
305   }
306   #endif
307  
299 #ifndef HAVE_STRLCPY
308   /*      $OpenBSD: strlcpy.c,v 1.8 2003/06/17 21:56:24 millert Exp $     */
309  
310   /*
# Line 320 | Line 328 | static long long atoll(const char *s) {
328   * will be copied.  Always NUL terminates (unless siz == 0).
329   * Returns strlen(src); if retval >= siz, truncation occurred.
330   */
331 < size_t strlcpy(char *dst, const char *src, size_t siz){
331 > size_t sg_strlcpy(char *dst, const char *src, size_t siz){
332          register char *d = dst;
333          register const char *s = src;
334          register size_t n = siz;
# Line 343 | Line 351 | size_t strlcpy(char *dst, const char *src, size_t siz)
351  
352          return(s - src - 1);    /* count does not include NUL */
353   }
346 #endif
354  
348 #ifndef HAVE_STRLCAT
355   /*      $OpenBSD: strlcat.c,v 1.11 2003/06/17 21:56:24 millert Exp $    */
356  
357   /*
# Line 371 | Line 377 | size_t strlcpy(char *dst, const char *src, size_t siz)
377   * Returns strlen(src) + MIN(siz, strlen(initial dst)).
378   * If retval >= siz, truncation occurred.
379   */
380 < size_t strlcat(char *dst, const char *src, size_t siz){
380 > size_t sg_strlcat(char *dst, const char *src, size_t siz){
381          register char *d = dst;
382          register const char *s = src;
383          register size_t n = siz;
# Line 397 | Line 403 | size_t strlcat(char *dst, const char *src, size_t siz)
403          return(dlen + (s - src));       /* count does not include NUL */
404   }
405  
406 < #endif
406 > char *sg_update_string(char **dest, const char *src) {
407 >        char *new;
408  
409 < long long get_ll_match(char *line, regmatch_t *match){
409 >        new = realloc(*dest, strlen(src) + 1);
410 >        if (new == NULL) {
411 >                return NULL;
412 >        }
413 >
414 >        strcpy(new, src);
415 >        *dest = new;
416 >        return new;
417 > }
418 >
419 > long long sg_get_ll_match(char *line, regmatch_t *match){
420          char *ptr;
421          long long num;
422  
# Line 409 | Line 426 | long long get_ll_match(char *line, regmatch_t *match){
426          return num;
427   }
428  
429 < #ifdef ALLBSD
430 < kvm_t *get_kvm() {
429 > #if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
430 > kvm_t *sg_get_kvm() {
431          static kvm_t *kvmd = NULL;
432  
433          if (kvmd != NULL) {
# Line 420 | Line 437 | kvm_t *get_kvm() {
437          kvmd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL);
438          return kvmd;
439   }
440 +
441 + /* Can't think of a better name for this function */
442 + kvm_t *sg_get_kvm2() {
443 +        static kvm_t *kvmd2 = NULL;
444 +
445 +        if (kvmd2 != NULL) {
446 +                return kvmd2;
447 +        }
448 +
449 +        kvmd2 = kvm_openfiles(_PATH_DEVNULL, _PATH_DEVNULL, NULL, O_RDONLY, NULL);
450 +        return kvmd2;
451 + }
452   #endif
453  
454 < #ifdef NETBSD
455 < struct uvmexp *get_uvmexp() {
456 <        static u_long addr = 0;
457 <        static struct uvmexp uvm;
458 <        kvm_t *kvmd = get_kvm();
454 > #if defined(NETBSD) || defined(OPENBSD)
455 > struct uvmexp *sg_get_uvmexp() {
456 >        int mib[2];
457 >        size_t size;
458 >        static struct uvmexp *uvm = NULL;
459 >        struct uvmexp *new;
460  
461 <        if (kvmd == NULL) {
461 >        mib[0] = CTL_VM;
462 >        mib[1] = VM_UVMEXP;
463 >
464 >        if (sysctl(mib, 2, NULL, &size, NULL, 0) < 0) {
465                  return NULL;
466          }
467  
468 <        if (addr == 0) {
469 <                struct nlist symbols[] = {
470 <                        { "_uvmexp" },
438 <                        { NULL }
439 <                };
440 <
441 <                if (kvm_nlist(kvmd, symbols) != 0) {
442 <                        return NULL;
443 <                }
444 <                addr = symbols[0].n_value;
468 >        new = realloc(uvm, size);
469 >        if (new == NULL) {
470 >                return NULL;
471          }
472 +        uvm = new;
473  
474 <        if (kvm_read(kvmd, addr, &uvm, sizeof uvm) != sizeof uvm) {
474 >        if (sysctl(mib, 2, uvm, &size, NULL, 0) < 0) {
475                  return NULL;
476          }
477 <        return &uvm;
477 >
478 >        return uvm;
479   }
480   #endif
481  
482 < int statgrab_init(){
483 < #ifdef ALLBSD
484 <        {
485 <                kvm_t *kvmd = get_kvm();
458 <                if (kvmd == NULL) return 1;
482 > int sg_init(){
483 > #if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
484 >        if (sg_get_kvm() == NULL) {
485 >                return 1;
486          }
487 < #endif
488 < #ifdef NETBSD
462 <        {
463 <                struct uvmexp *uvm = get_uvmexp();
464 <                if (uvm == NULL) return 1;
487 >        if (sg_get_kvm2() == NULL) {
488 >                return 1;
489          }
490   #endif
491 + #if defined(NETBSD) || defined(OPENBSD)
492 +        /* This should always succeed, but it seems that on some
493 +         * versions of NetBSD the first call to get_uvmexp will return
494 +         * a non-filled-in structure; this is a workaround for that.
495 +         */
496 +        if (sg_get_uvmexp() == NULL) return 1;
497 + #endif
498   #ifdef SOLARIS
499          /* On solaris 7, this will fail if you are not root. But, everything
500           * will still work, just no disk mappings. So we will ignore the exit
501           * status of this, and carry on merrily.
502           */
503 < #ifdef(HAVE_LIBDEVINFO_H)
503 > #ifdef HAVE_LIBDEVINFO_H
504          build_mapping();
505   #endif
506   #endif
507          return 0;
508   }
509  
510 < int statgrab_drop_privileges() {
510 > int sg_drop_privileges() {
511          if (setegid(getgid()) != 0) return -1;
512          if (seteuid(getuid()) != 0) return -1;
513          return 0;

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