diff --git a/ntfsprogs/ntfsdump_logfile.c b/ntfsprogs/ntfsdump_logfile.c index 915514d6..205711db 100644 --- a/ntfsprogs/ntfsdump_logfile.c +++ b/ntfsprogs/ntfsdump_logfile.c @@ -22,6 +22,13 @@ * in the file COPYING); if not, write to the Free Software Foundation, * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +/* TODO: + * - Remove the need for clipping at 64MiB. + * - Add normal command line switchs (use getopt_long()). + * - For a volume: allow dumping only uncommited records. + * - For a file: get an optional command line parameter for the last SN. + * - Sanity checks. + */ #include "config.h" @@ -43,14 +50,61 @@ #include "layout.h" #include "logfile.h" #include "mst.h" +#include "utils.h" + +typedef struct { + BOOL is_volume; + const char *filename; + s64 data_size; + union { + struct { + ntfs_volume *vol; + ntfs_inode *ni; + ntfs_attr *na; + }; + struct { + int fd; + }; + }; +} logfile_file; + +GEN_PRINTF (Eprintf, stderr, NULL, FALSE) /** - * device_err_exit - + * logfile_close */ -void device_err_exit(char *dev_name, ntfs_volume *vol, ntfs_inode *ni, +static int logfile_close(logfile_file *logfile) +{ + if (logfile->is_volume) { + if (logfile->na) + ntfs_attr_close(logfile->na); + if (logfile->ni && ntfs_inode_close(logfile->ni)) + Eprintf("Warning: Failed to close $LogFile (inode %i):" + " %s\n", FILE_LogFile, strerror(errno)); + if (ntfs_umount(logfile->vol, 0)) + Eprintf("Warning: Failed to umount %s: %s\n", + logfile->filename, strerror(errno)); + } else { + if (close(logfile->fd)) + Eprintf("Warning: Failed to close file %s: %s\n", + logfile->filename, strerror(errno)); + } + return 0; +} + +/** + * device_err_exit - put an error message, cleanup and exit. + * @vol: volume to unmount. + * @ni: Inode to free. + * @na: Attribute to close. + * + * Use when you wish to exit and collate all the cleanups together. + * if you don't have some parameter to pass, just pass NULL. + */ +void device_err_exit(ntfs_volume *vol, ntfs_inode *ni, ntfs_attr *na, const char *fmt, ...) __attribute__ ((noreturn)) - __attribute__((format(printf, 5, 6))); -void device_err_exit(char *dev_name, ntfs_volume *vol, ntfs_inode *ni, + __attribute__ ((format(printf, 4, 5))); +void device_err_exit(ntfs_volume *vol, ntfs_inode *ni, ntfs_attr *na, const char *fmt, ...) { va_list ap; @@ -58,16 +112,17 @@ void device_err_exit(char *dev_name, ntfs_volume *vol, ntfs_inode *ni, if (na) ntfs_attr_close(na); if (ni && ntfs_inode_close(ni)) - fprintf(stderr, "Warning: Failed to close $LogFile (inode " - "%i): %s\n", FILE_LogFile, strerror(errno)); + Eprintf("Warning: Failed to close $LogFile (inode %i): %s\n", + FILE_LogFile, strerror(errno)); if (ntfs_umount(vol, 0)) - fprintf(stderr, "Warning: Failed to umount %s: %s\n", - dev_name, strerror(errno)); + Eprintf("Warning: Failed to umount: %s\n", strerror(errno)); + fprintf(stderr, "ERROR: "); va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); - fprintf(stderr, "Aborting...\n"); + + Eprintf("Aborting...\n"); exit(1); } @@ -82,11 +137,13 @@ void log_err_exit(u8 *buf, const char *fmt, ...) if (buf) free(buf); + fprintf(stderr, "ERROR: "); va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap); - fprintf(stderr, "Aborting...\n"); + + Eprintf("Aborting...\n"); exit(1); } @@ -96,180 +153,122 @@ void log_err_exit(u8 *buf, const char *fmt, ...) void usage(const char *exec_name) __attribute__ ((noreturn)); void usage(const char *exec_name) { - fprintf(stderr, "%s v%s - Interpret and display information about the " - "journal\n($LogFile) of an NTFS volume.\n" - "Copyright (c) 2000-2004 Anton Altaparmakov.\n" - "%s is free software, released under the GNU General " - "Public License\nand you are welcome to redistribute " - "it under certain conditions.\n%s comes with " - "ABSOLUTELY NO WARRANTY; for details read the GNU\n" - "General Public License to be found in the file " - "COPYING in the main Linux-NTFS\ndistribution " - "directory.\nUsage: %s device\n e.g. %s /dev/hda6\n" - "Alternative usage: %s -f file\n e.g. %s -f " - "MyCopyOfTheLogFile\n", exec_name, VERSION, exec_name, - exec_name, exec_name, exec_name, exec_name, exec_name); + Eprintf("%s v%s - Interpret and display information about the " + "journal\n($LogFile) of an NTFS volume.\n" + "Copyright (c) 2000-2004 Anton Altaparmakov.\n" + "%s is free software, released under the GNU General " + "Public License\nand you are welcome to redistribute " + "it under certain conditions.\n%s comes with " + "ABSOLUTELY NO WARRANTY; for details read the GNU\n" + "General Public License to be found in the file " + "COPYING in the main Linux-NTFS\ndistribution " + "directory.\nUsage: %s device\n e.g. %s /dev/hda6\n" + "Alternative usage: %s -f file\n e.g. %s -f " + "MyCopyOfTheLogFile\n", exec_name, VERSION, exec_name, + exec_name, exec_name, exec_name, exec_name, exec_name); exit(1); } /** - * main - + * logfile_open */ -int main(int argc, char **argv) +static int logfile_open(BOOL is_volume, const char *filename, + logfile_file *logfile) { - u8 *buf; - RESTART_PAGE_HEADER *rstr; - RESTART_AREA *ra; - LOG_CLIENT_RECORD *lcr; - RECORD_PAGE_HEADER *rcrd; - LOG_RECORD *lr; - int buf_size, err, client, pass = 1; - unsigned int page_size, usa_end_ofs, i; - - printf("\n"); - if (argc < 2 || argc > 3) - usage(argv[0]); - /* - * If one argument, it is a device containing an NTFS volume which we - * need to mount and read the $LogFile from so we can dump its contents. - * - * If two arguments the first one must be "-f" and the second one is - * the path and name of the $LogFile (or copy thereof) which we need to - * read and dump the contents of. - */ - if (argc == 2) { - s64 br; + if (is_volume) { ntfs_volume *vol; ntfs_inode *ni; ntfs_attr *na; - vol = ntfs_mount(argv[1], MS_RDONLY); + vol = ntfs_mount(filename, MS_RDONLY); if (!vol) - log_err_exit(NULL, "Failed to mount %s: %s\n", argv[1], - strerror(errno)); - printf("\nMounted NTFS volume %s (NTFS v%i.%i) on device %s.\n", + log_err_exit(NULL, "Failed to mount %s: %s\n", + filename, strerror(errno)); + printf("Mounted NTFS volume %s (NTFS v%i.%i) on device %s.\n", vol->vol_name ? vol->vol_name : "", - vol->major_ver, vol->minor_ver, argv[1]); + vol->major_ver, vol->minor_ver, filename); if (ntfs_version_is_supported(vol)) - device_err_exit(argv[1], vol, NULL, NULL, + device_err_exit(vol, NULL, NULL, "Unsupported NTFS version.\n"); ni = ntfs_inode_open(vol, FILE_LogFile); if (!ni) - device_err_exit(argv[1], vol, NULL, NULL, "Failed to " + device_err_exit(vol, NULL, NULL, "Failed to " "open $LogFile (inode %i): %s\n", FILE_LogFile, strerror(errno)); na = ntfs_attr_open(ni, AT_DATA, AT_UNNAMED, 0); if (!na) - device_err_exit(argv[1], vol, ni, NULL, "Failed to " - "open $LogFile/$DATA (attribute " - "0x%x): %s\n", - (unsigned int)le32_to_cpu(AT_DATA), - strerror(errno)); + device_err_exit(vol, ni, NULL, "Failed to open " + "$LogFile/$DATA (attribute 0x%x):" + " %s\n", (unsigned int) + le32_to_cpu(AT_DATA), strerror(errno)); if (!na->data_size) - device_err_exit(argv[1], vol, ni, na, "$LogFile has " - "zero length. Run chkdsk /f to " - "correct this.\n"); - if (na->data_size <= 64 * 1024 * 1024) - buf_size = na->data_size; - else { - fprintf(stderr, "Warning: $LogFile is too big. Only " - "analysing the first 64MiB.\n"); - buf_size = 64 * 1024 * 1024; - } - /* For simplicity we read all of $LogFile/$DATA into memory. */ - buf = malloc(buf_size); - if (!buf) - device_err_exit(argv[1], vol, ni, na, "Failed to " - "allocate buffer for $LogFile/$DATA: " - "%s", strerror(errno)); - br = ntfs_attr_pread(na, 0, buf_size, buf); - if (br != buf_size) { - free(buf); - device_err_exit(argv[1], vol, ni, na, "Failed to read " - "$LogFile/$DATA: %s", br < 0 ? - strerror(errno) : "Partial read."); - } - ntfs_attr_close(na); - if (ntfs_inode_close(ni)) - fprintf(stderr, "Warning: Failed to close $LogFile " - "(inode %i): %s\n", FILE_LogFile, - strerror(errno)); - if (ntfs_umount(vol, 0)) - fprintf(stderr, "Warning: Failed to umount %s: %s\n", - argv[1], strerror(errno)); - } else /* if (argc == 3) */ { - ssize_t br; - int fd; + device_err_exit(vol, ni, na, "$LogFile has zero " + "length. Run chkdsk /f to correct " + "this.\n"); + logfile->data_size = na->data_size; + logfile->vol = vol; + logfile->ni = ni; + logfile->na = na; + } else { struct stat sbuf; + int fd; - if (strncmp(argv[1], "-f", strlen("-f"))) - usage(argv[0]); - if (stat(argv[2], &sbuf) == -1) { + if (stat(filename, &sbuf) == -1) { if (errno == ENOENT) log_err_exit(NULL, "The file %s does not " "exist. Did you specify it " - "correctly?\n", argv[2]); + "correctly?\n", filename); log_err_exit(NULL, "Error getting information about " - "%s: %s\n", argv[2], strerror(errno)); + "%s: %s\n", filename, strerror(errno)); } - if (sbuf.st_size <= 64 * 1024 * 1024) - buf_size = sbuf.st_size; - else { - fprintf(stderr, "Warning: File %s is too big. Only " - "analysing the first 64MiB.\n", - argv[2]); - buf_size = 64 * 1024 * 1024; - } - /* For simplicity we read all of the file into memory. */ - buf = malloc(buf_size); - if (!buf) - log_err_exit(NULL, "Failed to allocate buffer for " - "file data: %s", strerror(errno)); - fd = open(argv[2], O_RDONLY); + + fd = open(filename, O_RDONLY); if (fd == -1) log_err_exit(NULL, "Failed to open file %s: %s\n", - argv[2], strerror(errno)); - /* Read in the file into the buffer. */ - br = read(fd, buf, buf_size); - err = errno; - if (close(fd)) - fprintf(stderr, "Warning: Failed to close file %s: " - "%s\n", argv[2], strerror(errno)); - if (br != buf_size) - log_err_exit(buf, "Failed to read data from %s: %s", - argv[2], br < 0 ? strerror(err) : - "Partial read."); + filename, strerror(errno)); + logfile->data_size = sbuf.st_size; + logfile->fd = fd; } - /* - * We now have the entirety of the journal ($LogFile/$DATA or argv[2]) - * in the memory buffer buf and this has a size of buf_size. Note we - * apply a size capping at 64MiB, so if the journal is any bigger we - * only have the first 64MiB. This should not be a problem as I have - * never seen such a large $LogFile. Usually it is only a few MiB in - * size. - */ - rstr = (RESTART_PAGE_HEADER*)buf; - /* Check for presence of restart area signature. */ - if (!ntfs_is_rstr_record(rstr->magic) && - !ntfs_is_chkd_record(rstr->magic)) { - s8 *pos = (s8*)buf; - s8 *end = pos + buf_size; - while (pos < end && *pos == -1) - pos++; - if (pos != end) - log_err_exit(buf, "$LogFile contents are corrupt " - "(magic RSTR is missing). Cannot " - "handle this yet.\n"); - /* All bytes are -1. */ - free(buf); - puts("$LogFile is not initialized."); - return 0; + + logfile->is_volume = is_volume; + logfile->filename = filename; + + return 0; +} + +/** + * logfile_read + */ +static int logfile_pread(logfile_file *logfile, int ofs, int count, u8 *buf) +{ + int br; + + if (logfile->is_volume) { + br = (int)ntfs_attr_pread(logfile->na, ofs, count, buf); + } else { + if (lseek(logfile->fd, ofs, SEEK_SET)==-1) { + Eprintf("Could not seek to offset %u\n", ofs); + return 0; + } + br = read(logfile->fd, buf, count); } - /* - * First, verify the restart page header for consistency. - */ + if (br != count) { + Eprintf("Only %d out of %d bytes read starting at %d\n", + br, count, ofs); + } + return br; +} + +/** + * restart_header_sanity() + */ +static void restart_header_sanity(RESTART_PAGE_HEADER *rstr, u8 *buf) +{ + unsigned int usa_end_ofs, page_size; + /* Only CHKD records are allowed to have chkdsk_lsn set. */ - if (!ntfs_is_chkd_record(rstr->magic) && sle64_to_cpu(rstr->chkdsk_lsn)) + if (!ntfs_is_chkd_record(rstr->magic) && + sle64_to_cpu(rstr->chkdsk_lsn)) log_err_exit(buf, "$LogFile is corrupt: Restart page header " "magic is not CHKD but a chkdsk LSN is " "specified. Cannot handle this yet.\n"); @@ -321,68 +320,10 @@ int main(int argc, char **argv) "corrupt: Restart area offset is not aligned " "to 8-byte boundary. Cannot handle this " "yet.\n"); - /* - * Second, verify the restart area itself. - */ - // TODO: Implement this. - fprintf(stderr, "Warning: Sanity checking of restart area not " - "implemented yet.\n"); - /* - * Third and last, verify the array of log client records. - */ - // TODO: Implement this. - fprintf(stderr, "Warning: Sanity checking of array of log client " - "records not implemented yet.\n"); -rstr_pass_loc: - if (ntfs_is_chkd_record(rstr->magic)) - log_err_exit(buf, "The %s restart page header in $LogFile has " - "been modified by chkdsk. Do not know how to " - "handle this yet. Reboot into Windows to fix " - "this.\n", (u8*)rstr == buf ? "first" : - "second"); - if (ntfs_mst_post_read_fixup((NTFS_RECORD*)rstr, page_size) || - ntfs_is_baad_record(rstr->magic)) - log_err_exit(buf, "$LogFile incomplete multi sector transfer " - "detected in restart page header. Cannot " - "handle this yet.\n"); - if (pass == 1) - printf("$LogFile version %i.%i.\n", - sle16_to_cpu(rstr->major_ver), - sle16_to_cpu(rstr->minor_ver)); - else /* if (pass == 2) */ { - /* - * rstr is now the second restart page so we declare rstr1 - * as the first restart page as this one has been verified in - * the first pass so we can use all its members safely. - */ - RESTART_PAGE_HEADER *rstr1 = (RESTART_PAGE_HEADER*)buf; +} - /* Exclude the usa from the comparison. */ - ra = (RESTART_AREA*)((u8*)rstr1 + - le16_to_cpu(rstr1->restart_offset)); - if (!memcmp(rstr1, rstr, le16_to_cpu(rstr1->usa_ofs)) && - !memcmp((u8*)rstr1 + le16_to_cpu( - rstr1->restart_offset), (u8*)rstr + - le16_to_cpu(rstr->restart_offset), - le16_to_cpu(ra->restart_area_length))) { - puts("\nSkipping analysis of second restart page " - "because it fully matches the first " - "one."); - goto skip_rstr_pass; - } - /* - * The $LogFile versions specified in each of the two restart - * page headers must match. - */ - if (rstr1->major_ver != rstr->major_ver || - rstr1->minor_ver != rstr->minor_ver) - log_err_exit(buf, "Second restart area specifies " - "different $LogFile version to first " - "restart area. Cannot handle this " - "yet.\n"); - } - /* The restart page header is in rstr and it is mst deprotected. */ - printf("\n%s restart page:\n", pass == 1 ? "1st" : "2nd"); +static void dump_restart_areas_header(RESTART_PAGE_HEADER *rstr) +{ printf("\nRestart page header:\n"); printf("magic = %s\n", ntfs_is_rstr_record(rstr->magic) ? "RSTR" : "CHKD"); @@ -402,7 +343,14 @@ rstr_pass_loc: printf("restart_offset = %u (0x%x)\n", le16_to_cpu(rstr->restart_offset), le16_to_cpu(rstr->restart_offset)); - printf("\nRestart area:\n"); +} + +static void dump_restart_areas_area(RESTART_PAGE_HEADER *rstr) +{ + LOG_CLIENT_RECORD *lcr; + RESTART_AREA *ra; + int client; + ra = (RESTART_AREA*)((u8*)rstr + le16_to_cpu(rstr->restart_offset)); printf("current_lsn = %lli (0x%llx)\n", (long long)sle64_to_cpu(ra->current_lsn), @@ -481,55 +429,89 @@ rstr_pass_loc: */ lcr++; } +} + +/** + * dump_restart_areas() + */ +static void *dump_restart_areas(RESTART_PAGE_HEADER *rstr, u8 *buf, + unsigned int page_size) +{ + int pass = 1; + +rstr_pass_loc: + if (ntfs_is_chkd_record(rstr->magic)) + log_err_exit(buf, "The %s restart page header in $LogFile has " + "been modified by chkdsk. Do not know how to " + "handle this yet. Reboot into Windows to fix " + "this.\n", (u8*)rstr == buf ? "first" : + "second"); + if (ntfs_mst_post_read_fixup((NTFS_RECORD*)rstr, page_size) || + ntfs_is_baad_record(rstr->magic)) + log_err_exit(buf, "$LogFile incomplete multi sector transfer " + "detected in restart page header. Cannot " + "handle this yet.\n"); + if (pass == 1) + printf("$LogFile version %i.%i.\n", + sle16_to_cpu(rstr->major_ver), + sle16_to_cpu(rstr->minor_ver)); + else /* if (pass == 2) */ { + RESTART_AREA *ra; + + /* + * rstr is now the second restart page so we declare rstr1 + * as the first restart page as this one has been verified in + * the first pass so we can use all its members safely. + */ + RESTART_PAGE_HEADER *rstr1 = (RESTART_PAGE_HEADER*)buf; + + /* Exclude the usa from the comparison. */ + ra = (RESTART_AREA*)((u8*)rstr1 + + le16_to_cpu(rstr1->restart_offset)); + if (!memcmp(rstr1, rstr, le16_to_cpu(rstr1->usa_ofs)) && + !memcmp((u8*)rstr1 + le16_to_cpu( + rstr1->restart_offset), (u8*)rstr + + le16_to_cpu(rstr->restart_offset), + le16_to_cpu(ra->restart_area_length))) { + puts("\nSkipping analysis of second restart page " + "because it fully matches the first " + "one."); + goto skip_rstr_pass; + } + /* + * The $LogFile versions specified in each of the two restart + * page headers must match. + */ + if (rstr1->major_ver != rstr->major_ver || + rstr1->minor_ver != rstr->minor_ver) + log_err_exit(buf, "Second restart area specifies " + "different $LogFile version to first " + "restart area. Cannot handle this " + "yet.\n"); + } + /* The restart page header is in rstr and it is mst deprotected. */ + printf("\n%s restart page:\n", pass == 1 ? "1st" : "2nd"); + dump_restart_areas_header(rstr); + + printf("\nRestart area:\n"); + dump_restart_areas_area(rstr); + skip_rstr_pass: if (pass == 1) { rstr = (RESTART_PAGE_HEADER*)((u8*)rstr + page_size); ++pass; goto rstr_pass_loc; } - printf("\n\nFinished with restart pages. Beginning with log pages.\n"); - /* Reuse pass for log area. */ - pass = 0; - rcrd = (RECORD_PAGE_HEADER*)rstr; -rcrd_pass_loc: - rcrd = (RECORD_PAGE_HEADER*)((u8*)rcrd + page_size); - if ((u8*)rcrd + page_size > buf + buf_size) - goto end_of_rcrd_passes; - printf("\nLog record page number %i", pass); - if (!ntfs_is_rcrd_record(rcrd->magic) && - !ntfs_is_chkd_record(rcrd->magic)) { - for (i = 0; i < page_size; i++) - if (((u8*)rcrd)[i] != (u8)-1) - break; - if (i < page_size) - puts(" is corrupt (magic is not RCRD or CHKD)."); - else - puts(" is empty."); - pass++; - goto rcrd_pass_loc; - } else - puts(":"); - /* Dump log record page */ - printf("magic = %s\n", ntfs_is_rcrd_record(rcrd->magic) ? "RCRD" : - "CHKD"); -// TODO: I am here... (AIA) - printf("copy.last_lsn/file_offset = 0x%llx\n", (unsigned long long) - le64_to_cpu(rcrd->copy.last_lsn)); - printf("flags = 0x%x\n", (unsigned int)le32_to_cpu(rcrd->flags)); - printf("page count = %i\n", le16_to_cpu(rcrd->page_count)); - printf("page position = %i\n", le16_to_cpu(rcrd->page_position)); - printf("header.next_record_offset = 0x%llx\n", (unsigned long long) - le64_to_cpu(rcrd->header.packed.next_record_offset)); - printf("header.last_end_lsn = 0x%llx\n", (unsigned long long) - le64_to_cpu(rcrd->header.packed.last_end_lsn)); - /* - * Where does the 0x40 come from? Is it just usa_offset + - * usa_client * 2 + 7 & ~7 or is it derived from somewhere? - */ - lr = (LOG_RECORD*)((u8*)rcrd + 0x40); - client = 0; -log_record_pass: - printf("\nLog record %i:\n", client); + + return rstr; +} + +/** + * dump_log_records() + */ +static void dump_log_record(LOG_RECORD *lr) +{ + unsigned int i; printf("this lsn = 0x%llx\n", (unsigned long long)le64_to_cpu(lr->this_lsn)); printf("client previous lsn = 0x%llx\n", (unsigned long long) @@ -578,16 +560,189 @@ log_record_pass: if (le16_to_cpu(lr->lcns_to_follow) > 0) printf("Array of lcns:\n"); for (i = 0; i < le16_to_cpu(lr->lcns_to_follow); i++) - printf("lcn_list[%i].lcn = 0x%llx\n", i, (unsigned long long) + printf("lcn_list[%u].lcn = 0x%llx\n", i, (unsigned long long) sle64_to_cpu(lr->lcn_list[i].lcn)); - client++; - lr = (LOG_RECORD*)((u8*)lr + 0x70); - if (((u8*)lr + 0x70 <= (u8*)rcrd + - le64_to_cpu(rcrd->header.packed.next_record_offset))) - goto log_record_pass; +} + +/** + * dump_log_records() + */ +static void dump_log_records(RECORD_PAGE_HEADER *rcrd, u8 *buf, + int buf_size, unsigned int page_size) +{ + LOG_RECORD *lr; + int pass = 0; + int client; + + /* Reuse pass for log area. */ +rcrd_pass_loc: + rcrd = (RECORD_PAGE_HEADER*)((u8*)rcrd + page_size); + if ((u8*)rcrd + page_size > buf + buf_size) + return; + printf("\nLog record page number %i", pass); + if (!ntfs_is_rcrd_record(rcrd->magic) && + !ntfs_is_chkd_record(rcrd->magic)) { + unsigned int i; + for (i = 0; i < page_size; i++) + if (((u8*)rcrd)[i] != (u8)-1) + break; + if (i < page_size) + puts(" is corrupt (magic is not RCRD or CHKD)."); + else + puts(" is empty."); + pass++; + goto rcrd_pass_loc; + } else + puts(":"); + /* Dump log record page */ + printf("magic = %s\n", ntfs_is_rcrd_record(rcrd->magic) ? "RCRD" : + "CHKD"); +// TODO: I am here... (AIA) + printf("copy.last_lsn/file_offset = 0x%llx\n", (unsigned long long) + le64_to_cpu(rcrd->copy.last_lsn)); + printf("flags = 0x%x\n", (unsigned int)le32_to_cpu(rcrd->flags)); + printf("page count = %i\n", le16_to_cpu(rcrd->page_count)); + printf("page position = %i\n", le16_to_cpu(rcrd->page_position)); + printf("header.next_record_offset = 0x%llx\n", (unsigned long long) + le64_to_cpu(rcrd->header.packed.next_record_offset)); + printf("header.last_end_lsn = 0x%llx\n", (unsigned long long) + le64_to_cpu(rcrd->header.packed.last_end_lsn)); + /* + * Where does the 0x40 come from? Is it just usa_offset + + * usa_client * 2 + 7 & ~7 or is it derived from somewhere? + */ + lr = (LOG_RECORD*)((u8*)rcrd + 0x40); + client = 0; + do { + printf("\nLog record %i:\n", client); + dump_log_record(lr); + client++; + lr = (LOG_RECORD*)((u8*)lr + 0x70); + } while (((u8*)lr + 0x70 <= (u8*)rcrd + + le64_to_cpu(rcrd->header.packed.next_record_offset))); + pass++; goto rcrd_pass_loc; -end_of_rcrd_passes: +} + +/** + * main - + */ +int main(int argc, char **argv) +{ + RESTART_PAGE_HEADER *rstr; + RECORD_PAGE_HEADER *rcrd; + unsigned int page_size; + int buf_size, br, err; + logfile_file logfile; + u8 *buf; + + printf("\n"); + if (argc < 2 || argc > 3) + /* print usage and exit */ + usage(argv[0]); + /* + * If one argument, it is a device containing an NTFS volume which we + * need to mount and read the $LogFile from so we can dump its + * contents. + * + * If two arguments the first one must be "-f" and the second one is + * the path and name of the $LogFile (or copy thereof) which we need to + * read and dump the contents of. + */ + + if (argc == 2) { + logfile_open(TRUE, argv[1], &logfile); + } else /* if (argc == 3) */ { + if (strncmp(argv[1], "-f", strlen("-f"))) + usage(argv[0]); + + logfile_open(FALSE, argv[2], &logfile); + } + + buf_size = 64 * 1024 * 1024; + + if (logfile.data_size <= buf_size) + buf_size = logfile.data_size; + else + Eprintf("Warning: $LogFile is too big. " + "Only analysing the first 64MiB.\n"); + + /* For simplicity we read all of $LogFile/$DATA into memory. */ + buf = malloc(buf_size); + if (!buf) { + Eprintf("Failed to allocate buffer for file data: %s\n", + strerror(errno)); + logfile_close(&logfile); + exit(1); + } + + br = logfile_pread(&logfile, 0, buf_size, buf); + err = errno; + logfile_close(&logfile); + if (br != buf_size) { + log_err_exit(buf, "Failed to read $LogFile/$DATA: %s\n", + br < 0 ? strerror(err) : "Partial read."); + } + + /* + * We now have the entirety of the journal ($LogFile/$DATA or argv[2]) + * in the memory buffer buf and this has a size of buf_size. Note we + * apply a size capping at 64MiB, so if the journal is any bigger we + * only have the first 64MiB. This should not be a problem as I have + * never seen such a large $LogFile. Usually it is only a few MiB in + * size. + */ + rstr = (RESTART_PAGE_HEADER*)buf; + + /* Check for presence of restart area signature. */ + if (!ntfs_is_rstr_record(rstr->magic) && + !ntfs_is_chkd_record(rstr->magic)) { + s8 *pos = (s8*)buf; + s8 *end = pos + buf_size; + while (pos < end && *pos == -1) + pos++; + if (pos != end) + log_err_exit(buf, "$LogFile contents are corrupt " + "(magic RSTR is missing). Cannot " + "handle this yet.\n"); + /* All bytes are -1. */ + free(buf); + puts("$LogFile is not initialized."); + return 0; + } + + /* + * First, verify the restart page header for consistency. + */ + restart_header_sanity(rstr, buf); + page_size = le32_to_cpu(rstr->log_page_size); + + /* + * Second, verify the restart area itself. + */ + // TODO: Implement this. + Eprintf("Warning: Sanity checking of restart area not implemented " + "yet.\n"); + /* + * Third and last, verify the array of log client records. + */ + // TODO: Implement this. + Eprintf("Warning: Sanity checking of array of log client records not " + "implemented yet.\n"); + + /* + * Dump the restart headers & areas. + */ + rcrd = (RECORD_PAGE_HEADER*)dump_restart_areas(rstr, buf, page_size); + printf("\n\nFinished with restart pages. " + "Beginning with log pages.\n"); + + /* + * Dump the log areas. + */ + dump_log_records(rcrd, buf, buf_size, page_size); + free(buf); return 0; }