diff options
Diffstat (limited to 'e2fsck/util.c')
| -rw-r--r-- | e2fsck/util.c | 900 |
1 files changed, 900 insertions, 0 deletions
diff --git a/e2fsck/util.c b/e2fsck/util.c new file mode 100644 index 0000000..42740d9 --- /dev/null +++ b/e2fsck/util.c @@ -0,0 +1,900 @@ +/* + * util.c --- miscellaneous utilities + * + * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o. + * + * %Begin-Header% + * This file may be redistributed under the terms of the GNU Public + * License. + * %End-Header% + */ + +#include "config.h" +#include <stdlib.h> +#include <stdio.h> +#include <unistd.h> +#include <string.h> +#include <ctype.h> +#ifdef __linux__ +#include <sys/utsname.h> +#endif + +#ifdef HAVE_CONIO_H +#undef HAVE_TERMIOS_H +#include <conio.h> +#define read_a_char() getch() +#else +#ifdef HAVE_TERMIOS_H +#include <termios.h> +#endif +#endif + +#ifdef HAVE_MALLOC_H +#include <malloc.h> +#endif + +#ifdef HAVE_ERRNO_H +#include <errno.h> +#endif + +#include "e2fsck.h" + +extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */ + +#include <stdarg.h> +#include <time.h> +#include <sys/time.h> +#include <sys/resource.h> + +void fatal_error(e2fsck_t ctx, const char *msg) +{ + ext2_filsys fs = ctx->fs; + int exit_value = FSCK_ERROR; + + if (msg) + fprintf (stderr, "e2fsck: %s\n", msg); + if (!fs) + goto out; + if (fs->io && fs->super) { + ext2fs_mmp_stop(ctx->fs); + if (ctx->fs->io->magic == EXT2_ET_MAGIC_IO_CHANNEL) + io_channel_flush(ctx->fs->io); + else + log_err(ctx, "e2fsck: io manager magic bad!\n"); + } + if (ext2fs_test_changed(fs)) { + exit_value |= FSCK_NONDESTRUCT; + log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"), + ctx->device_name); + if (ctx->mount_flags & EXT2_MF_ISROOT) + exit_value |= FSCK_REBOOT; + } + if (!ext2fs_test_valid(fs)) { + log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has " + "errors **********\n\n"), ctx->device_name); + exit_value |= FSCK_UNCORRECTED; + exit_value &= ~FSCK_NONDESTRUCT; + } +out: + ctx->flags |= E2F_FLAG_ABORT; + if (ctx->flags & E2F_FLAG_SETJMP_OK) + longjmp(ctx->abort_loc, 1); + if (ctx->logf) + fprintf(ctx->logf, "Exit status: %d\n", exit_value); + exit(exit_value); +} + +void log_out(e2fsck_t ctx, const char *fmt, ...) +{ + va_list pvar; + + va_start(pvar, fmt); + vprintf(fmt, pvar); + va_end(pvar); + if (ctx->logf) { + va_start(pvar, fmt); + vfprintf(ctx->logf, fmt, pvar); + va_end(pvar); + } +} + +void log_err(e2fsck_t ctx, const char *fmt, ...) +{ + va_list pvar; + + va_start(pvar, fmt); + vfprintf(stderr, fmt, pvar); + va_end(pvar); + if (ctx->logf) { + va_start(pvar, fmt); + vfprintf(ctx->logf, fmt, pvar); + va_end(pvar); + } +} + +void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned long size, + const char *description) +{ + void *ret; + char buf[256]; + +#ifdef DEBUG_ALLOCATE_MEMORY + printf("Allocating %lu bytes for %s...\n", size, description); +#endif + if (ext2fs_get_memzero(size, &ret)) { + sprintf(buf, "Can't allocate %lu bytes for %s\n", + size, description); + fatal_error(ctx, buf); + } + + return ret; +} + +char *string_copy(e2fsck_t ctx EXT2FS_ATTR((unused)), + const char *str, size_t len) +{ + char *ret; + + if (!str) + return NULL; + if (!len) + len = strlen(str); + ret = malloc(len+1); + if (ret) { + strncpy(ret, str, len); + ret[len] = 0; + } + return ret; +} + +#ifndef HAVE_STRNLEN +/* + * Incredibly, libc5 doesn't appear to have strnlen. So we have to + * provide our own. + */ +int e2fsck_strnlen(const char * s, int count) +{ + const char *cp = s; + + while (count-- && *cp) + cp++; + return cp - s; +} +#endif + +#ifndef HAVE_CONIO_H +static int read_a_char(void) +{ + char c; + int r; + int fail = 0; + + while(1) { + if (e2fsck_global_ctx && + (e2fsck_global_ctx->flags & E2F_FLAG_CANCEL)) { + return 3; + } + r = read(0, &c, 1); + if (r == 1) + return c; + if (fail++ > 100) + break; + } + return EOF; +} +#endif + +int ask_yn(e2fsck_t ctx, const char * string, int def) +{ + int c; + const char *defstr; + const char *short_yes = _("yY"); + const char *short_no = _("nN"); + const char *short_yesall = _("aA"); + const char *english_yes = "yY"; + const char *english_no = "nN"; + const char *english_yesall = "aA"; + const char *yesall_prompt = _(" ('a' enables 'yes' to all) "); + const char *extra_prompt = ""; + static int yes_answers; + +#ifdef HAVE_TERMIOS_H + struct termios termios, tmp; + + if (tcgetattr (0, &termios) < 0) + memset(&termios, 0, sizeof(termios)); + tmp = termios; + tmp.c_lflag &= ~(ICANON | ECHO); + tmp.c_cc[VMIN] = 1; + tmp.c_cc[VTIME] = 0; + tcsetattr (0, TCSANOW, &tmp); +#endif + + if (def == 1) + defstr = _(_("<y>")); + else if (def == 0) + defstr = _(_("<n>")); + else + defstr = _(" (y/n)"); + /* + * If the user presses 'y' more than 8 (but less than 12) times in + * succession without pressing anything else, display a hint about + * yes-to-all mode. + */ + if (yes_answers > 12) + yes_answers = -1; + else if (yes_answers > 8) + extra_prompt = yesall_prompt; + log_out(ctx, "%s%s%s? ", string, extra_prompt, defstr); + while (1) { + fflush (stdout); + if ((c = read_a_char()) == EOF) + break; + if (c == 3) { +#ifdef HAVE_TERMIOS_H + tcsetattr (0, TCSANOW, &termios); +#endif + if (ctx->flags & E2F_FLAG_SETJMP_OK) { + log_out(ctx, "\n"); + longjmp(e2fsck_global_ctx->abort_loc, 1); + } + log_out(ctx, "%s", _("cancelled!\n")); + yes_answers = 0; + return 0; + } + if (strchr(short_yes, (char) c)) { + do_yes: + def = 1; + if (yes_answers >= 0) + yes_answers++; + break; + } else if (strchr(short_no, (char) c)) { + do_no: + def = 0; + yes_answers = -1; + break; + } else if (strchr(short_yesall, (char)c)) { + do_all: + def = 2; + yes_answers = -1; + ctx->options |= E2F_OPT_YES; + break; + } else if (strchr(english_yes, (char) c)) { + goto do_yes; + } else if (strchr(english_no, (char) c)) { + goto do_no; + } else if (strchr(english_yesall, (char) c)) { + goto do_all; + } else if ((c == 27 || c == ' ' || c == '\n') && (def != -1)) { + yes_answers = -1; + break; + } + } + if (def == 2) + log_out(ctx, "%s", _("yes to all\n")); + else if (def) + log_out(ctx, "%s", _("yes\n")); + else + log_out(ctx, "%s", _("no\n")); +#ifdef HAVE_TERMIOS_H + tcsetattr (0, TCSANOW, &termios); +#endif + return def; +} + +int ask (e2fsck_t ctx, const char * string, int def) +{ + if (ctx->options & E2F_OPT_NO) { + log_out(ctx, _("%s? no\n\n"), string); + return 0; + } + if (ctx->options & E2F_OPT_YES) { + log_out(ctx, _("%s? yes\n\n"), string); + return 1; + } + if (ctx->options & E2F_OPT_PREEN) { + log_out(ctx, "%s? %s\n\n", string, def ? _("yes") : _("no")); + return def; + } + return ask_yn(ctx, string, def); +} + +void e2fsck_read_bitmaps(e2fsck_t ctx) +{ + ext2_filsys fs = ctx->fs; + errcode_t retval; + const char *old_op; + unsigned int save_type; + int flags; + + if (ctx->invalid_bitmaps) { + com_err(ctx->program_name, 0, + _("e2fsck_read_bitmaps: illegal bitmap block(s) for %s"), + ctx->device_name); + fatal_error(ctx, 0); + } + + old_op = ehandler_operation(_("reading inode and block bitmaps")); + e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE, "fs_bitmaps", + &save_type); + flags = ctx->fs->flags; + ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS; + retval = ext2fs_read_bitmaps(fs); + ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) | + (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS); + fs->default_bitmap_type = save_type; + ehandler_operation(old_op); + if (retval) { + com_err(ctx->program_name, retval, + _("while retrying to read bitmaps for %s"), + ctx->device_name); + fatal_error(ctx, 0); + } +} + +void e2fsck_write_bitmaps(e2fsck_t ctx) +{ + ext2_filsys fs = ctx->fs; + errcode_t retval; + const char *old_op; + + old_op = ehandler_operation(_("writing block and inode bitmaps")); + retval = ext2fs_write_bitmaps(fs); + ehandler_operation(old_op); + if (retval) { + com_err(ctx->program_name, retval, + _("while rewriting block and inode bitmaps for %s"), + ctx->device_name); + fatal_error(ctx, 0); + } +} + +void preenhalt(e2fsck_t ctx) +{ + ext2_filsys fs = ctx->fs; + + if (!(ctx->options & E2F_OPT_PREEN)) + return; + log_err(ctx, _("\n\n%s: UNEXPECTED INCONSISTENCY; " + "RUN fsck MANUALLY.\n\t(i.e., without -a or -p options)\n"), + ctx->device_name); + ctx->flags |= E2F_FLAG_EXITING; + if (fs != NULL) { + fs->super->s_state |= EXT2_ERROR_FS; + ext2fs_mark_super_dirty(fs); + ext2fs_close_free(&fs); + } + exit(FSCK_UNCORRECTED); +} + +#ifdef RESOURCE_TRACK +void init_resource_track(struct resource_track *track, io_channel channel) +{ +#ifdef HAVE_GETRUSAGE + struct rusage r; +#endif + io_stats io_start = 0; + + track->brk_start = sbrk(0); + gettimeofday(&track->time_start, 0); +#ifdef HAVE_GETRUSAGE +#ifdef sun + memset(&r, 0, sizeof(struct rusage)); +#endif + getrusage(RUSAGE_SELF, &r); + track->user_start = r.ru_utime; + track->system_start = r.ru_stime; +#else + track->user_start.tv_sec = track->user_start.tv_usec = 0; + track->system_start.tv_sec = track->system_start.tv_usec = 0; +#endif + track->bytes_read = 0; + track->bytes_written = 0; + if (channel && channel->manager && channel->manager->get_stats) + channel->manager->get_stats(channel, &io_start); + if (io_start) { + track->bytes_read = io_start->bytes_read; + track->bytes_written = io_start->bytes_written; + } +} + +#ifdef __GNUC__ +#define _INLINE_ __inline__ +#else +#define _INLINE_ +#endif + +static _INLINE_ float timeval_subtract(struct timeval *tv1, + struct timeval *tv2) +{ + return ((tv1->tv_sec - tv2->tv_sec) + + ((float) (tv1->tv_usec - tv2->tv_usec)) / 1000000); +} + +void print_resource_track(e2fsck_t ctx, const char *desc, + struct resource_track *track, io_channel channel) +{ +#ifdef HAVE_GETRUSAGE + struct rusage r; +#endif + struct timeval time_end; + + if ((desc && !(ctx->options & E2F_OPT_TIME2)) || + (!desc && !(ctx->options & E2F_OPT_TIME))) + return; + + e2fsck_clear_progbar(ctx); + gettimeofday(&time_end, 0); + + if (desc) + log_out(ctx, "%s: ", desc); + +#define kbytes(x) (((unsigned long long)(x) + 1023) / 1024) +#ifdef HAVE_MALLINFO2 + if (1) { + struct mallinfo2 malloc_info = mallinfo2(); + + log_out(ctx, _("Memory used: %lluk/%lluk (%lluk/%lluk), "), + kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd), + kbytes(malloc_info.uordblks), + kbytes(malloc_info.fordblks)); + } else +#elif defined HAVE_MALLINFO + /* don't use mallinfo() if over 2GB used, since it returns "int" */ + if ((char *)sbrk(0) - (char *)track->brk_start < 2LL << 30) { + struct mallinfo malloc_info = mallinfo(); + + log_out(ctx, _("Memory used: %lluk/%lluk (%lluk/%lluk), "), + kbytes(malloc_info.arena), kbytes(malloc_info.hblkhd), + kbytes(malloc_info.uordblks), + kbytes(malloc_info.fordblks)); + } else +#endif + log_out(ctx, _("Memory used: %lluk, "), + kbytes(((char *)sbrk(0)) - ((char *)track->brk_start))); + +#ifdef HAVE_GETRUSAGE + getrusage(RUSAGE_SELF, &r); + + log_out(ctx, _("time: %5.2f/%5.2f/%5.2f\n"), + timeval_subtract(&time_end, &track->time_start), + timeval_subtract(&r.ru_utime, &track->user_start), + timeval_subtract(&r.ru_stime, &track->system_start)); +#else + log_out(ctx, _("elapsed time: %6.3f\n"), + timeval_subtract(&time_end, &track->time_start)); +#endif +#define mbytes(x) (((x) + 1048575) / 1048576) + if (channel && channel->manager && channel->manager->get_stats) { + io_stats delta = 0; + unsigned long long bytes_read = 0; + unsigned long long bytes_written = 0; + + if (desc) + log_out(ctx, "%s: ", desc); + + channel->manager->get_stats(channel, &delta); + if (delta) { + bytes_read = delta->bytes_read - track->bytes_read; + bytes_written = delta->bytes_written - + track->bytes_written; + } + log_out(ctx, "I/O read: %lluMB, write: %lluMB, " + "rate: %.2fMB/s\n", + mbytes(bytes_read), mbytes(bytes_written), + (double)mbytes(bytes_read + bytes_written) / + timeval_subtract(&time_end, &track->time_start)); + } +} +#endif /* RESOURCE_TRACK */ + +void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino, + struct ext2_inode * inode, const char *proc) +{ + errcode_t retval; + + retval = ext2fs_read_inode(ctx->fs, ino, inode); + if (retval) { + com_err("ext2fs_read_inode", retval, + _("while reading inode %lu in %s"), ino, proc); + fatal_error(ctx, 0); + } +} + +void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino, + struct ext2_inode *inode, int bufsize, + const char *proc) +{ + errcode_t retval; + + retval = ext2fs_read_inode_full(ctx->fs, ino, inode, bufsize); + if (retval) { + com_err("ext2fs_read_inode_full", retval, + _("while reading inode %lu in %s"), ino, proc); + fatal_error(ctx, 0); + } +} + +void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino, + struct ext2_inode * inode, int bufsize, + const char *proc) +{ + errcode_t retval; + + retval = ext2fs_write_inode_full(ctx->fs, ino, inode, bufsize); + if (retval) { + com_err("ext2fs_write_inode", retval, + _("while writing inode %lu in %s"), ino, proc); + fatal_error(ctx, 0); + } +} + +void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino, + struct ext2_inode * inode, const char *proc) +{ + errcode_t retval; + + retval = ext2fs_write_inode(ctx->fs, ino, inode); + if (retval) { + com_err("ext2fs_write_inode", retval, + _("while writing inode %lu in %s"), ino, proc); + fatal_error(ctx, 0); + } +} + +#ifdef MTRACE +void mtrace_print(char *mesg) +{ + FILE *malloc_get_mallstream(); + FILE *f = malloc_get_mallstream(); + + if (f) + fprintf(f, "============= %s\n", mesg); +} +#endif + +blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs, const char *name, + io_manager manager) +{ + struct ext2_super_block *sb; + io_channel io = NULL; + void *buf = NULL; + int blocksize; + blk64_t superblock, ret_sb = 8193; + + if (fs && fs->super) { + ret_sb = (fs->super->s_blocks_per_group + + fs->super->s_first_data_block); + if (ctx) { + ctx->superblock = ret_sb; + ctx->blocksize = fs->blocksize; + } + return ret_sb; + } + + if (ctx) { + if (ctx->blocksize) { + ret_sb = ctx->blocksize * 8; + if (ctx->blocksize == 1024) + ret_sb++; + ctx->superblock = ret_sb; + return ret_sb; + } + ctx->superblock = ret_sb; + ctx->blocksize = 1024; + } + + if (!name || !manager) + goto cleanup; + + if (manager->open(name, 0, &io) != 0) + goto cleanup; + + if (ext2fs_get_mem(SUPERBLOCK_SIZE, &buf)) + goto cleanup; + sb = (struct ext2_super_block *) buf; + + for (blocksize = EXT2_MIN_BLOCK_SIZE; + blocksize <= EXT2_MAX_BLOCK_SIZE ; blocksize *= 2) { + superblock = blocksize*8; + if (blocksize == 1024) + superblock++; + io_channel_set_blksize(io, blocksize); + if (io_channel_read_blk64(io, superblock, + -SUPERBLOCK_SIZE, buf)) + continue; +#ifdef WORDS_BIGENDIAN + if (sb->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) + ext2fs_swap_super(sb); +#endif + if ((sb->s_magic == EXT2_SUPER_MAGIC) && + (EXT2_BLOCK_SIZE(sb) == blocksize)) { + ret_sb = superblock; + if (ctx) { + ctx->superblock = superblock; + ctx->blocksize = blocksize; + } + break; + } + } + +cleanup: + if (io) + io_channel_close(io); + if (buf) + ext2fs_free_mem(&buf); + return (ret_sb); +} + +/* + * Given a mode, return the ext2 file type + */ +int ext2_file_type(unsigned int mode) +{ + if (LINUX_S_ISREG(mode)) + return EXT2_FT_REG_FILE; + + if (LINUX_S_ISDIR(mode)) + return EXT2_FT_DIR; + + if (LINUX_S_ISCHR(mode)) + return EXT2_FT_CHRDEV; + + if (LINUX_S_ISBLK(mode)) + return EXT2_FT_BLKDEV; + + if (LINUX_S_ISLNK(mode)) + return EXT2_FT_SYMLINK; + + if (LINUX_S_ISFIFO(mode)) + return EXT2_FT_FIFO; + + if (LINUX_S_ISSOCK(mode)) + return EXT2_FT_SOCK; + + return 0; +} + +/* + * Check to see if a filesystem is in /proc/filesystems. + * Returns 1 if found, 0 if not + */ +int fs_proc_check(const char *fs_name) +{ + FILE *f; + char buf[80], *cp, *t; + + f = fopen("/proc/filesystems", "r"); + if (!f) + return (0); + while (!feof(f)) { + if (!fgets(buf, sizeof(buf), f)) + break; + cp = buf; + if (!isspace(*cp)) { + while (*cp && !isspace(*cp)) + cp++; + } + while (*cp && isspace(*cp)) + cp++; + if ((t = strchr(cp, '\n')) != NULL) + *t = 0; + if ((t = strchr(cp, '\t')) != NULL) + *t = 0; + if ((t = strchr(cp, ' ')) != NULL) + *t = 0; + if (!strcmp(fs_name, cp)) { + fclose(f); + return (1); + } + } + fclose(f); + return (0); +} + +/* + * Check to see if a filesystem is available as a module + * Returns 1 if found, 0 if not + */ +int check_for_modules(const char *fs_name) +{ +#ifdef __linux__ + struct utsname uts; + FILE *f; + char buf[1024], *cp, *t; + int i; + + if (uname(&uts)) + return (0); + snprintf(buf, sizeof(buf), "/lib/modules/%s/modules.dep", uts.release); + + f = fopen(buf, "r"); + if (!f) + return (0); + while (!feof(f)) { + if (!fgets(buf, sizeof(buf), f)) + break; + if ((cp = strchr(buf, ':')) != NULL) + *cp = 0; + else + continue; + if ((cp = strrchr(buf, '/')) != NULL) + cp++; + else + cp = buf; + i = strlen(cp); + if (i > 3) { + t = cp + i - 3; + if (!strcmp(t, ".ko")) + *t = 0; + } + if (!strcmp(cp, fs_name)) { + fclose(f); + return (1); + } + } + fclose(f); +#endif /* __linux__ */ + return (0); +} + +/* + * Helper function that does the right thing if write returns a + * partial write, or an EAGAIN/EINTR error. + */ +int write_all(int fd, char *buf, size_t count) +{ + ssize_t ret; + int c = 0; + + while (count > 0) { + ret = write(fd, buf, count); + if (ret < 0) { + if ((errno == EAGAIN) || (errno == EINTR)) + continue; + return -1; + } + count -= ret; + buf += ret; + c += ret; + } + return c; +} + +void dump_mmp_msg(struct mmp_struct *mmp, const char *fmt, ...) +{ + va_list pvar; + + if (fmt) { + printf("MMP check failed: "); + va_start(pvar, fmt); + vprintf(fmt, pvar); + va_end(pvar); + } + if (mmp) { + time_t t = mmp->mmp_time; + + printf("MMP_block:\n"); + printf(" mmp_magic: 0x%x\n", mmp->mmp_magic); + printf(" mmp_check_interval: %d\n", + mmp->mmp_check_interval); + printf(" mmp_sequence: %08x\n", mmp->mmp_seq); + printf(" mmp_update_date: %s", ctime(&t)); + printf(" mmp_update_time: %lld\n", + (long long) mmp->mmp_time); + printf(" mmp_node_name: %.*s\n", + EXT2_LEN_STR(mmp->mmp_nodename)); + printf(" mmp_device_name: %.*s\n", + EXT2_LEN_STR(mmp->mmp_bdevname)); + } +} + +errcode_t e2fsck_mmp_update(ext2_filsys fs) +{ + errcode_t retval; + + retval = ext2fs_mmp_update(fs); + if (retval == EXT2_ET_MMP_CHANGE_ABORT) + dump_mmp_msg(fs->mmp_cmp, + _("UNEXPECTED INCONSISTENCY: the filesystem is " + "being modified while fsck is running.\n")); + + return retval; +} + +void e2fsck_set_bitmap_type(ext2_filsys fs, unsigned int default_type, + const char *profile_name, unsigned int *old_type) +{ + unsigned type; + e2fsck_t ctx = (e2fsck_t) fs->priv_data; + + if (old_type) + *old_type = fs->default_bitmap_type; + profile_get_uint(ctx->profile, "bitmaps", profile_name, 0, + default_type, &type); + profile_get_uint(ctx->profile, "bitmaps", "all", 0, type, &type); + fs->default_bitmap_type = type ? type : default_type; +} + +errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs, const char *descr, + int deftype, + const char *name, + ext2fs_inode_bitmap *ret) +{ + errcode_t retval; + unsigned int save_type; + + e2fsck_set_bitmap_type(fs, deftype, name, &save_type); + retval = ext2fs_allocate_inode_bitmap(fs, descr, ret); + fs->default_bitmap_type = save_type; + return retval; +} + +errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs, const char *descr, + int deftype, + const char *name, + ext2fs_block_bitmap *ret) +{ + errcode_t retval; + unsigned int save_type; + + e2fsck_set_bitmap_type(fs, deftype, name, &save_type); + retval = ext2fs_allocate_block_bitmap(fs, descr, ret); + fs->default_bitmap_type = save_type; + return retval; +} + +errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs, const char *descr, + int deftype, + const char *name, + ext2fs_block_bitmap *ret) +{ + errcode_t retval; + unsigned int save_type; + + e2fsck_set_bitmap_type(fs, deftype, name, &save_type); + retval = ext2fs_allocate_subcluster_bitmap(fs, descr, ret); + fs->default_bitmap_type = save_type; + return retval; +} + +/* Return memory size in bytes */ +unsigned long long get_memory_size(void) +{ +#if defined(_SC_PHYS_PAGES) +# if defined(_SC_PAGESIZE) + return (unsigned long long)sysconf(_SC_PHYS_PAGES) * + (unsigned long long)sysconf(_SC_PAGESIZE); +# elif defined(_SC_PAGE_SIZE) + return (unsigned long long)sysconf(_SC_PHYS_PAGES) * + (unsigned long long)sysconf(_SC_PAGE_SIZE); +# endif +#elif defined(CTL_HW) +# if (defined(HW_MEMSIZE) || defined(HW_PHYSMEM64)) +# define CTL_HW_INT64 +# elif (defined(HW_PHYSMEM) || defined(HW_REALMEM)) +# define CTL_HW_UINT +# endif + int mib[2]; + + mib[0] = CTL_HW; +# if defined(HW_MEMSIZE) + mib[1] = HW_MEMSIZE; +# elif defined(HW_PHYSMEM64) + mib[1] = HW_PHYSMEM64; +# elif defined(HW_REALMEM) + mib[1] = HW_REALMEM; +# elif defined(HW_PYSMEM) + mib[1] = HW_PHYSMEM; +# endif +# if defined(CTL_HW_INT64) + unsigned long long size = 0; +# elif defined(CTL_HW_UINT) + unsigned int size = 0; +# endif + return 0; +#else +# warning "Don't know how to detect memory on your platform?" + return 0; +#endif +} |