2 * util.c --- miscellaneous utilities
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
20 #include <sys/utsname.h>
26 #define read_a_char() getch()
47 extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
52 #include <sys/resource.h>
54 void fatal_error(e2fsck_t ctx, const char *msg)
56 ext2_filsys fs = ctx->fs;
57 int exit_value = FSCK_ERROR;
60 fprintf (stderr, "e2fsck: %s\n", msg);
63 if (fs->io && fs->super) {
64 ext2fs_mmp_stop(ctx->fs);
65 if (ctx->fs->io->magic == EXT2_ET_MAGIC_IO_CHANNEL)
66 io_channel_flush(ctx->fs->io);
68 log_err(ctx, "e2fsck: io manager magic bad!\n");
70 if (ext2fs_test_changed(fs)) {
71 exit_value |= FSCK_NONDESTRUCT;
72 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
74 if (ctx->mount_flags & EXT2_MF_ISROOT)
75 exit_value |= FSCK_REBOOT;
77 if (!ext2fs_test_valid(fs)) {
78 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
79 "errors **********\n\n"), ctx->device_name);
80 exit_value |= FSCK_UNCORRECTED;
81 exit_value &= ~FSCK_NONDESTRUCT;
84 ctx->flags |= E2F_FLAG_ABORT;
85 if (!(ctx->options & E2F_OPT_MULTITHREAD) &&
86 ctx->flags & E2F_FLAG_SETJMP_OK)
87 longjmp(ctx->abort_loc, 1);
89 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
94 static void thread_log_out(struct e2fsck_thread *tinfo)
96 printf("[Thread %d] %s", tinfo->et_thread_index,
98 tinfo->et_log_length = 0;
99 tinfo->et_log_buf[0] = '\0';
103 void log_out(e2fsck_t ctx, const char *fmt, ...)
106 struct e2fsck_thread *tinfo;
110 int fmt_length = strlen(fmt);
113 if ((ctx->options & E2F_OPT_MULTITHREAD) && ctx->global_ctx) {
114 tinfo = &ctx->thread_info;
115 buf_size = sizeof(tinfo->et_log_buf);
116 left_size = buf_size - tinfo->et_log_length;
119 msg_size = vsnprintf(tinfo->et_log_buf + tinfo->et_log_length,
120 left_size, fmt, pvar);
123 if (msg_size >= left_size) {
124 tinfo->et_log_buf[tinfo->et_log_length] = '\0';
126 assert(msg_size < buf_size);
127 if (msg_size < buf_size) {
128 thread_log_out(tinfo);
131 msg_size = vsnprintf(tinfo->et_log_buf, buf_size,
135 tinfo->et_log_length += msg_size;
136 tinfo->et_log_buf[tinfo->et_log_length] = '\0';
139 tinfo->et_log_length += msg_size;
140 tinfo->et_log_buf[tinfo->et_log_length] = '\0';
143 if (tinfo->et_log_length > 0 &&
144 tinfo->et_log_buf[tinfo->et_log_length - 1] == '\n')
145 thread_log_out(tinfo);
156 vfprintf(ctx->logf, fmt, pvar);
161 void log_err(e2fsck_t ctx, const char *fmt, ...)
166 vfprintf(stderr, fmt, pvar);
170 vfprintf(ctx->logf, fmt, pvar);
175 void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned long size,
176 const char *description)
181 #ifdef DEBUG_ALLOCATE_MEMORY
182 printf("Allocating %lu bytes for %s...\n", size, description);
184 if (ext2fs_get_memzero(size, &ret)) {
185 sprintf(buf, "Can't allocate %lu bytes for %s\n",
187 fatal_error(ctx, buf);
193 char *string_copy(e2fsck_t ctx EXT2FS_ATTR((unused)),
194 const char *str, size_t len)
204 strncpy(ret, str, len);
212 * Incredibly, libc5 doesn't appear to have strnlen. So we have to
215 int e2fsck_strnlen(const char * s, int count)
219 while (count-- && *cp)
226 static int read_a_char(void)
233 if (e2fsck_global_ctx &&
234 (e2fsck_global_ctx->flags & E2F_FLAG_CANCEL)) {
247 int ask_yn(e2fsck_t ctx, const char * string, int def)
251 const char *short_yes = _("yY");
252 const char *short_no = _("nN");
253 const char *short_yesall = _("aA");
254 const char *english_yes = "yY";
255 const char *english_no = "nN";
256 const char *english_yesall = "aA";
257 const char *yesall_prompt = _(" ('a' enables 'yes' to all) ");
258 const char *extra_prompt = "";
259 static int yes_answers;
261 #ifdef HAVE_TERMIOS_H
262 struct termios termios, tmp;
264 if (tcgetattr (0, &termios) < 0)
265 memset(&termios, 0, sizeof(termios));
267 tmp.c_lflag &= ~(ICANON | ECHO);
270 tcsetattr (0, TCSANOW, &tmp);
274 defstr = _(_("<y>"));
276 defstr = _(_("<n>"));
278 defstr = _(" (y/n)");
280 * If the user presses 'y' more than 8 (but less than 12) times in
281 * succession without pressing anything else, display a hint about
284 if (yes_answers > 12)
286 else if (yes_answers > 8)
287 extra_prompt = yesall_prompt;
288 log_out(ctx, "%s%s%s? ", string, extra_prompt, defstr);
291 if ((c = read_a_char()) == EOF)
294 #ifdef HAVE_TERMIOS_H
295 tcsetattr (0, TCSANOW, &termios);
297 if (ctx->flags & E2F_FLAG_SETJMP_OK) {
299 longjmp(e2fsck_global_ctx->abort_loc, 1);
301 log_out(ctx, "%s", _("cancelled!\n"));
305 if (strchr(short_yes, (char) c)) {
308 if (yes_answers >= 0)
311 } else if (strchr(short_no, (char) c)) {
316 } else if (strchr(short_yesall, (char)c)) {
320 ctx->options |= E2F_OPT_YES;
322 } else if (strchr(english_yes, (char) c)) {
324 } else if (strchr(english_no, (char) c)) {
326 } else if (strchr(english_yesall, (char) c)) {
328 } else if ((c == 27 || c == ' ' || c == '\n') && (def != -1)) {
334 log_out(ctx, "%s", _("yes to all\n"));
336 log_out(ctx, "%s", _("yes\n"));
338 log_out(ctx, "%s", _("no\n"));
339 #ifdef HAVE_TERMIOS_H
340 tcsetattr (0, TCSANOW, &termios);
345 int ask (e2fsck_t ctx, const char * string, int def)
347 if (ctx->options & E2F_OPT_NO) {
348 log_out(ctx, _("%s? no\n\n"), string);
351 if (ctx->options & E2F_OPT_YES) {
352 log_out(ctx, _("%s? yes\n\n"), string);
355 if (ctx->options & E2F_OPT_PREEN) {
356 log_out(ctx, "%s? %s\n\n", string, def ? _("yes") : _("no"));
359 return ask_yn(ctx, string, def);
362 void e2fsck_read_bitmaps(e2fsck_t ctx)
364 ext2_filsys fs = ctx->fs;
367 unsigned int save_type;
370 if (ctx->invalid_bitmaps) {
371 com_err(ctx->program_name, 0,
372 _("e2fsck_read_bitmaps: illegal bitmap block(s) for %s"),
377 old_op = ehandler_operation(_("reading inode and block bitmaps"));
378 e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE, "fs_bitmaps",
380 flags = ctx->fs->flags;
381 ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
382 retval = ext2fs_read_bitmaps(fs);
383 ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
384 (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
385 fs->default_bitmap_type = save_type;
386 ehandler_operation(old_op);
388 com_err(ctx->program_name, retval,
389 _("while retrying to read bitmaps for %s"),
395 void e2fsck_write_bitmaps(e2fsck_t ctx)
397 ext2_filsys fs = ctx->fs;
401 old_op = ehandler_operation(_("writing block and inode bitmaps"));
402 retval = ext2fs_write_bitmaps(fs);
403 ehandler_operation(old_op);
405 com_err(ctx->program_name, retval,
406 _("while rewriting block and inode bitmaps for %s"),
412 void preenhalt(e2fsck_t ctx)
414 ext2_filsys fs = ctx->fs;
416 if (!(ctx->options & E2F_OPT_PREEN))
418 log_err(ctx, _("\n\n%s: UNEXPECTED INCONSISTENCY; "
419 "RUN fsck MANUALLY.\n\t(i.e., without -a or -p options)\n"),
421 ctx->flags |= E2F_FLAG_EXITING;
423 fs->super->s_state |= EXT2_ERROR_FS;
424 ext2fs_mark_super_dirty(fs);
425 ext2fs_close_free(&fs);
427 exit(FSCK_UNCORRECTED);
430 #ifdef RESOURCE_TRACK
431 void init_resource_track(struct resource_track *track, io_channel channel)
433 #ifdef HAVE_GETRUSAGE
436 io_stats io_start = 0;
438 track->brk_start = sbrk(0);
439 gettimeofday(&track->time_start, 0);
440 #ifdef HAVE_GETRUSAGE
442 memset(&r, 0, sizeof(struct rusage));
444 getrusage(RUSAGE_SELF, &r);
445 track->user_start = r.ru_utime;
446 track->system_start = r.ru_stime;
448 track->user_start.tv_sec = track->user_start.tv_usec = 0;
449 track->system_start.tv_sec = track->system_start.tv_usec = 0;
451 track->bytes_read = 0;
452 track->bytes_written = 0;
453 if (channel && channel->manager && channel->manager->get_stats)
454 channel->manager->get_stats(channel, &io_start);
456 track->bytes_read = io_start->bytes_read;
457 track->bytes_written = io_start->bytes_written;
462 #define _INLINE_ __inline__
467 static _INLINE_ float timeval_subtract(struct timeval *tv1,
470 return ((tv1->tv_sec - tv2->tv_sec) +
471 ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000);
474 void print_resource_track(e2fsck_t ctx, const char *desc,
475 struct resource_track *track, io_channel channel)
477 #ifdef HAVE_GETRUSAGE
480 struct timeval time_end;
482 if ((desc && !(ctx->options & E2F_OPT_TIME2)) ||
483 (!desc && !(ctx->options & E2F_OPT_TIME)))
486 e2fsck_clear_progbar(ctx);
487 gettimeofday(&time_end, 0);
490 log_out(ctx, "%s: ", desc);
492 #define kbytes(x) (((unsigned long long)(x) + 1023) / 1024)
494 /* don't use mallinfo() if over 2GB used, since it returns "int" */
495 if ((char *)sbrk(0) - (char *)track->brk_start < 2LL << 30) {
496 struct mallinfo malloc_info = mallinfo();
498 log_out(ctx, _("Memory used: %lluk/%lluk (%lluk/%lluk), "),
499 kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd),
500 kbytes(malloc_info.uordblks),
501 kbytes(malloc_info.fordblks));
504 log_out(ctx, _("Memory used: %lluk, "),
505 kbytes(((char *)sbrk(0)) - ((char *)track->brk_start)));
507 #ifdef HAVE_GETRUSAGE
508 getrusage(RUSAGE_SELF, &r);
510 log_out(ctx, _("time: %5.2f/%5.2f/%5.2f\n"),
511 timeval_subtract(&time_end, &track->time_start),
512 timeval_subtract(&r.ru_utime, &track->user_start),
513 timeval_subtract(&r.ru_stime, &track->system_start));
515 log_out(ctx, _("elapsed time: %6.3f\n"),
516 timeval_subtract(&time_end, &track->time_start));
518 #define mbytes(x) (((x) + 1048575) / 1048576)
519 if (channel && channel->manager && channel->manager->get_stats) {
521 unsigned long long bytes_read = 0;
522 unsigned long long bytes_written = 0;
525 log_out(ctx, "%s: ", desc);
527 channel->manager->get_stats(channel, &delta);
529 bytes_read = delta->bytes_read - track->bytes_read;
530 bytes_written = delta->bytes_written -
531 track->bytes_written;
533 log_out(ctx, "I/O read: %lluMB, write: %lluMB, "
535 mbytes(bytes_read), mbytes(bytes_written),
536 (double)mbytes(bytes_read + bytes_written) /
537 timeval_subtract(&time_end, &track->time_start));
540 #endif /* RESOURCE_TRACK */
542 void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
543 struct ext2_inode * inode, const char *proc)
547 retval = ext2fs_read_inode(ctx->fs, ino, inode);
549 com_err("ext2fs_read_inode", retval,
550 _("while reading inode %lu in %s"), ino, proc);
555 void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino,
556 struct ext2_inode *inode, int bufsize,
561 retval = ext2fs_read_inode_full(ctx->fs, ino, inode, bufsize);
563 com_err("ext2fs_read_inode_full", retval,
564 _("while reading inode %lu in %s"), ino, proc);
570 #define e2fsck_get_lock_context(ctx) \
571 e2fsck_t global_ctx = ctx->global_ctx; \
576 * before we hold write lock, read lock should
579 void e2fsck_pass1_fix_lock(e2fsck_t ctx)
583 if (!ctx->fs_need_locking)
586 e2fsck_get_lock_context(ctx);
587 err = pthread_rwlock_trywrlock(&global_ctx->fs_fix_rwlock);
589 pthread_rwlock_unlock(&global_ctx->fs_fix_rwlock);
590 pthread_rwlock_wrlock(&global_ctx->fs_fix_rwlock);
593 void e2fsck_pass1_fix_unlock(e2fsck_t ctx)
595 if (!ctx->fs_need_locking)
597 e2fsck_get_lock_context(ctx);
598 /* unlock write lock */
599 pthread_rwlock_unlock(&global_ctx->fs_fix_rwlock);
600 /* get read lock again */
601 pthread_rwlock_rdlock(&global_ctx->fs_fix_rwlock);
604 void e2fsck_pass1_check_lock(e2fsck_t ctx)
606 if (!ctx->fs_need_locking)
608 e2fsck_get_lock_context(ctx);
609 pthread_rwlock_rdlock(&global_ctx->fs_fix_rwlock);
612 void e2fsck_pass1_check_unlock(e2fsck_t ctx)
614 if (!ctx->fs_need_locking)
616 e2fsck_get_lock_context(ctx);
617 pthread_rwlock_unlock(&global_ctx->fs_fix_rwlock);
620 void e2fsck_pass1_block_map_w_lock(e2fsck_t ctx)
622 if (!ctx->fs_need_locking)
624 e2fsck_get_lock_context(ctx);
625 pthread_rwlock_wrlock(&global_ctx->fs_block_map_rwlock);
628 void e2fsck_pass1_block_map_w_unlock(e2fsck_t ctx)
630 if (!ctx->fs_need_locking)
632 e2fsck_get_lock_context(ctx);
633 pthread_rwlock_unlock(&global_ctx->fs_block_map_rwlock);
636 void e2fsck_pass1_block_map_r_lock(e2fsck_t ctx)
638 if (!ctx->fs_need_locking)
640 e2fsck_get_lock_context(ctx);
641 pthread_rwlock_rdlock(&global_ctx->fs_block_map_rwlock);
644 void e2fsck_pass1_block_map_r_unlock(e2fsck_t ctx)
646 if (!ctx->fs_need_locking)
648 e2fsck_get_lock_context(ctx);
649 pthread_rwlock_unlock(&global_ctx->fs_block_map_rwlock);
652 void e2fsck_pass1_fix_lock(e2fsck_t ctx)
657 void e2fsck_pass1_fix_unlock(e2fsck_t ctx)
661 void e2fsck_pass1_check_lock(e2fsck_t ctx)
665 void e2fsck_pass1_check_unlock(e2fsck_t ctx)
669 void e2fsck_pass1_block_map_w_lock(e2fsck_t ctx)
674 void e2fsck_pass1_block_map_w_unlock(e2fsck_t ctx)
679 void e2fsck_pass1_block_map_r_lock(e2fsck_t ctx)
684 void e2fsck_pass1_block_map_r_unlock(e2fsck_t ctx)
690 void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
691 struct ext2_inode * inode, int bufsize,
696 e2fsck_pass1_fix_lock(ctx);
697 retval = ext2fs_write_inode_full(ctx->fs, ino, inode, bufsize);
698 e2fsck_pass1_fix_unlock(ctx);
700 com_err("ext2fs_write_inode", retval,
701 _("while writing inode %lu in %s"), ino, proc);
706 void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
707 struct ext2_inode * inode, const char *proc)
711 e2fsck_pass1_fix_lock(ctx);
712 retval = ext2fs_write_inode(ctx->fs, ino, inode);
713 e2fsck_pass1_fix_unlock(ctx);
715 com_err("ext2fs_write_inode", retval,
716 _("while writing inode %lu in %s"), ino, proc);
722 void mtrace_print(char *mesg)
724 FILE *malloc_get_mallstream();
725 FILE *f = malloc_get_mallstream();
728 fprintf(f, "============= %s\n", mesg);
732 blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs, const char *name,
735 struct ext2_super_block *sb;
736 io_channel io = NULL;
739 blk64_t superblock, ret_sb = 8193;
741 if (fs && fs->super) {
742 ret_sb = (fs->super->s_blocks_per_group +
743 fs->super->s_first_data_block);
745 ctx->superblock = ret_sb;
746 ctx->blocksize = fs->blocksize;
752 if (ctx->blocksize) {
753 ret_sb = ctx->blocksize * 8;
754 if (ctx->blocksize == 1024)
756 ctx->superblock = ret_sb;
759 ctx->superblock = ret_sb;
760 ctx->blocksize = 1024;
763 if (!name || !manager)
766 if (manager->open(name, 0, &io) != 0)
769 if (ext2fs_get_mem(SUPERBLOCK_SIZE, &buf))
771 sb = (struct ext2_super_block *) buf;
773 for (blocksize = EXT2_MIN_BLOCK_SIZE;
774 blocksize <= EXT2_MAX_BLOCK_SIZE ; blocksize *= 2) {
775 superblock = blocksize*8;
776 if (blocksize == 1024)
778 io_channel_set_blksize(io, blocksize);
779 if (io_channel_read_blk64(io, superblock,
780 -SUPERBLOCK_SIZE, buf))
782 #ifdef WORDS_BIGENDIAN
783 if (sb->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC))
784 ext2fs_swap_super(sb);
786 if ((sb->s_magic == EXT2_SUPER_MAGIC) &&
787 (EXT2_BLOCK_SIZE(sb) == blocksize)) {
790 ctx->superblock = superblock;
791 ctx->blocksize = blocksize;
799 io_channel_close(io);
801 ext2fs_free_mem(&buf);
806 * Given a mode, return the ext2 file type
808 int ext2_file_type(unsigned int mode)
810 if (LINUX_S_ISREG(mode))
811 return EXT2_FT_REG_FILE;
813 if (LINUX_S_ISDIR(mode))
816 if (LINUX_S_ISCHR(mode))
817 return EXT2_FT_CHRDEV;
819 if (LINUX_S_ISBLK(mode))
820 return EXT2_FT_BLKDEV;
822 if (LINUX_S_ISLNK(mode))
823 return EXT2_FT_SYMLINK;
825 if (LINUX_S_ISFIFO(mode))
828 if (LINUX_S_ISSOCK(mode))
835 * Check to see if a filesystem is in /proc/filesystems.
836 * Returns 1 if found, 0 if not
838 int fs_proc_check(const char *fs_name)
841 char buf[80], *cp, *t;
843 f = fopen("/proc/filesystems", "r");
847 if (!fgets(buf, sizeof(buf), f))
851 while (*cp && !isspace(*cp))
854 while (*cp && isspace(*cp))
856 if ((t = strchr(cp, '\n')) != NULL)
858 if ((t = strchr(cp, '\t')) != NULL)
860 if ((t = strchr(cp, ' ')) != NULL)
862 if (!strcmp(fs_name, cp)) {
872 * Check to see if a filesystem is available as a module
873 * Returns 1 if found, 0 if not
875 int check_for_modules(const char *fs_name)
880 char buf[1024], *cp, *t;
885 snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release);
891 if (!fgets(buf, sizeof(buf), f))
893 if ((cp = strchr(buf, ':')) != NULL)
897 if ((cp = strrchr(buf, '/')) != NULL)
904 if (!strcmp(t, ".ko"))
907 if (!strcmp(cp, fs_name)) {
913 #endif /* __linux__ */
918 * Helper function that does the right thing if write returns a
919 * partial write, or an EAGAIN/EINTR error.
921 int write_all(int fd, char *buf, size_t count)
927 ret = write(fd, buf, count);
929 if ((errno == EAGAIN) || (errno == EINTR))
940 void dump_mmp_msg(struct mmp_struct *mmp, const char *fmt, ...)
945 printf("MMP check failed: ");
951 time_t t = mmp->mmp_time;
953 printf("MMP_block:\n");
954 printf(" mmp_magic: 0x%x\n", mmp->mmp_magic);
955 printf(" mmp_check_interval: %d\n",
956 mmp->mmp_check_interval);
957 printf(" mmp_sequence: %08x\n", mmp->mmp_seq);
958 printf(" mmp_update_date: %s", ctime(&t));
959 printf(" mmp_update_time: %lld\n",
960 (long long) mmp->mmp_time);
961 printf(" mmp_node_name: %.*s\n",
962 EXT2_LEN_STR(mmp->mmp_nodename));
963 printf(" mmp_device_name: %.*s\n",
964 EXT2_LEN_STR(mmp->mmp_bdevname));
968 errcode_t e2fsck_mmp_update(ext2_filsys fs)
972 retval = ext2fs_mmp_update(fs);
973 if (retval == EXT2_ET_MMP_CHANGE_ABORT)
974 dump_mmp_msg(fs->mmp_cmp,
975 _("UNEXPECTED INCONSISTENCY: the filesystem is "
976 "being modified while fsck is running.\n"));
981 void e2fsck_set_bitmap_type(ext2_filsys fs, unsigned int default_type,
982 const char *profile_name, unsigned int *old_type)
985 e2fsck_t ctx = (e2fsck_t) fs->priv_data;
988 *old_type = fs->default_bitmap_type;
989 profile_get_uint(ctx->profile, "bitmaps", profile_name, 0,
990 default_type, &type);
991 profile_get_uint(ctx->profile, "bitmaps", "all", 0, type, &type);
992 fs->default_bitmap_type = type ? type : default_type;
995 errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs, const char *descr,
998 ext2fs_inode_bitmap *ret)
1001 unsigned int save_type;
1003 e2fsck_set_bitmap_type(fs, deftype, name, &save_type);
1004 retval = ext2fs_allocate_inode_bitmap(fs, descr, ret);
1005 fs->default_bitmap_type = save_type;
1009 errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs, const char *descr,
1012 ext2fs_block_bitmap *ret)
1015 unsigned int save_type;
1017 e2fsck_set_bitmap_type(fs, deftype, name, &save_type);
1018 retval = ext2fs_allocate_block_bitmap(fs, descr, ret);
1019 fs->default_bitmap_type = save_type;
1023 errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs, const char *descr,
1026 ext2fs_block_bitmap *ret)
1029 unsigned int save_type;
1031 e2fsck_set_bitmap_type(fs, deftype, name, &save_type);
1032 retval = ext2fs_allocate_subcluster_bitmap(fs, descr, ret);
1033 fs->default_bitmap_type = save_type;
1037 /* Return memory size in bytes */
1038 unsigned long long get_memory_size(void)
1040 #if defined(_SC_PHYS_PAGES)
1041 # if defined(_SC_PAGESIZE)
1042 return (unsigned long long)sysconf(_SC_PHYS_PAGES) *
1043 (unsigned long long)sysconf(_SC_PAGESIZE);
1044 # elif defined(_SC_PAGE_SIZE)
1045 return (unsigned long long)sysconf(_SC_PHYS_PAGES) *
1046 (unsigned long long)sysconf(_SC_PAGE_SIZE);
1048 #elif defined(CTL_HW)
1049 # if (defined(HW_MEMSIZE) || defined(HW_PHYSMEM64))
1050 # define CTL_HW_INT64
1051 # elif (defined(HW_PHYSMEM) || defined(HW_REALMEM))
1052 # define CTL_HW_UINT
1057 # if defined(HW_MEMSIZE)
1058 mib[1] = HW_MEMSIZE;
1059 # elif defined(HW_PHYSMEM64)
1060 mib[1] = HW_PHYSMEM64;
1061 # elif defined(HW_REALMEM)
1062 mib[1] = HW_REALMEM;
1063 # elif defined(HW_PYSMEM)
1064 mib[1] = HW_PHYSMEM;
1066 # if defined(CTL_HW_INT64)
1067 unsigned long long size = 0;
1068 # elif defined(CTL_HW_UINT)
1069 unsigned int size = 0;
1073 # warning "Don't know how to detect memory on your platform?"