+++ /dev/null
-/*
- * A program to compare two mounted NTFS filesystems.
- */
-
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <inttypes.h>
-#include <unistd.h>
-#include <stdbool.h>
-#include <sys/stat.h>
-#include <attr/xattr.h>
-#include <assert.h>
-
-typedef uint64_t u64;
-
-#if 0
-# define DEBUG(format, ...) \
- ({ \
- int __errno_save = errno; \
- fprintf(stdout, "[%s %d] %s(): " format, \
- __FILE__, __LINE__, __func__, ## __VA_ARGS__); \
- putchar('\n'); \
- fflush(stdout); \
- errno = __errno_save; \
- })
-#else
-#define DEBUG(format, ...)
-#endif
-
-static void difference(const char *format, ...)
-{
- va_list va;
- va_start(va, format);
- fflush(stdout);
- fputs("ntfs-cmp: ", stderr);
- vfprintf(stderr, format, va);
- putc('\n', stderr);
- fflush(stderr);
- va_end(va);
- exit(1);
-}
-
-static void error(const char *format, ...)
-{
- va_list va;
- int err = errno;
- va_start(va, format);
- fflush(stdout);
- fputs("ntfs-cmp: ", stderr);
- vfprintf(stderr, format, va);
- fprintf(stderr, ": %s\n", strerror(err));
- va_end(va);
- exit(2);
-}
-
-/* This is just a binary tree that maps inode numbers in one NTFS tree to inode
- * numbers in the other NTFS tree. This is so we can tell if the hard link
- * groups are the same between the two NTFS trees. */
-struct node {
- u64 ino_from;
- u64 ino_to;
- struct node *left;
- struct node *right;
-};
-
-static struct node *tree = NULL;
-
-static const char *root1, *root2;
-
-static u64 do_lookup_ino(struct node *tree, u64 ino_from)
-{
- if (!tree)
- return -1;
- if (ino_from == tree->ino_from)
- return tree->ino_to;
- else if (ino_from < tree->ino_from)
- return do_lookup_ino(tree->left, ino_from);
- else
- return do_lookup_ino(tree->right, ino_from);
-}
-
-
-static void do_insert(struct node *tree, struct node *node)
-{
- if (node->ino_from < tree->ino_from) {
- if (tree->left)
- return do_insert(tree->left, node);
- else
- tree->left = node;
- } else {
- if (tree->right)
- return do_insert(tree->right, node);
- else
- tree->right = node;
- }
-}
-
-static u64 lookup_ino(u64 ino_from)
-{
- return do_lookup_ino(tree, ino_from);
-}
-
-static void insert_ino(u64 ino_from, u64 ino_to)
-{
- struct node *node = malloc(sizeof(struct node));
- if (!node)
- error("Out of memory");
- node->ino_from = ino_from;
- node->ino_to = ino_to;
- node->left = NULL;
- node->right = NULL;
- if (!tree)
- tree = node;
- else
- do_insert(tree, node);
-}
-
-
-/* Compares the "normal" contents of two files of size @size. */
-static void cmp(const char *file1, const char *file2, size_t size)
-{
- int fd1, fd2;
- char buf1[4096], buf2[4096];
- ssize_t to_read = 4096;
- fd1 = open(file1, O_RDONLY);
- if (fd1 == -1)
- error("Could not open `%s'", file1);
- fd2 = open(file2, O_RDONLY);
- if (fd2 == -1)
- error("Could not open `%s'", file2);
- for (; size; size -= to_read) {
- if (to_read > size)
- to_read = size;
- if (read(fd1, buf1, to_read) != to_read)
- error("Error reading `%s'", file1);
- if (read(fd2, buf2, to_read) != to_read)
- error("Error reading `%s'", file2);
- if (memcmp(buf1, buf2, to_read))
- difference("File contents of `%s' and `%s' differ",
- file1, file2);
- }
- close(fd1);
- close(fd2);
-}
-
-/* Compares an extended attribute of the files. */
-static void cmp_xattr(const char *file1, const char *file2,
- const char *xattr_name, ssize_t max_size,
- bool missingok)
-{
- ssize_t len1, len2;
- char *buf1, *buf2;
- DEBUG("cmp xattr \"%s\" of files %s, %s", xattr_name, file1, file2);
- len1 = lgetxattr(file1, xattr_name, NULL, 0);
- if (len1 == -1) {
- if (errno == ENOATTR) {
- if (missingok) {
- errno = 0;
- lgetxattr(file2, xattr_name, NULL, 0);
- if (errno == ENOATTR)
- return;
- else
- difference("xattr `%s' exists on file `%s' "
- "but not on file `%s'",
- xattr_name, file1, file2);
- } else {
- error("Could not find attribute `%s' of `%s'",
- xattr_name, file1);
- }
- } else {
- error("Could not read xattr `%s' of `%s'",
- xattr_name, file1);
- }
- }
- buf1 = malloc(len1);
- buf2 = malloc(len1);
- if (!buf1 || !buf2)
- error("Out of memory");
- if (lgetxattr(file1, xattr_name, buf1, len1) != len1)
- error("Could not read xattr `%s' of `%s'",
- xattr_name, file1);
-
- len2 = lgetxattr(file2, xattr_name, buf2, len1);
- if (len2 == len1) {
- if (memcmp(buf1, buf2,
- (max_size == 0 || len1 <= max_size) ? len1 : max_size))
- {
- difference("xattr `%s' of files `%s' and `%s' differs",
- xattr_name, file1, file2);
- }
- } else {
- if (len2 == -1) {
- error("Could not read xattr `%s' from `%s'",
- xattr_name, file2);
- }
- if (len1 != len2)
- difference("xattr `%s' of files `%s' and `%s' differs",
- xattr_name, file1, file2);
- }
- free(buf1);
- free(buf2);
-}
-
-/* Compares all alternate data streams of the files */
-static void cmp_ads(const char *file1, const char *file2)
-{
- char _list1[256], _list2[sizeof(_list1)];
- char *list1 = _list1, *list2 = _list2;
- char *pe, *p;
- ssize_t len1, len2, tmp;
- errno = 0;
- len1 = llistxattr(file1, list1, sizeof(_list1));
- if (len1 == -1) {
- if (errno != ERANGE || ((len1 = llistxattr(file1, NULL, 0) == -1)))
- error("Could not get xattr list of `%s'", file1);
- list1 = malloc(len1);
- list2 = malloc(len1);
- if (!list1 || !list2)
- error("Out of memory");
- tmp = llistxattr(file1, list1, len1);
- if (tmp == -1)
- error("Could not get xattr list of `%s'", file1);
- if (tmp != len1)
- error("xattr list of `%s' changed as we read it",
- file1);
- }
- errno = 0;
- len2 = llistxattr(file2, list2, len1);
- if (len1 == -1) {
- if (errno == ERANGE)
- difference("`%s' and `%s' do not have the same "
- "xattr list", file1, file2);
- else
- error("Could not get xattr list of `%s'", file2);
- }
- if (len1 != len2 || memcmp(list1, list2, len1))
- difference("`%s' and `%s' do not have the same "
- "xattr list", file1, file2);
- p = list1;
- pe = list1 + len1 - 1;
- while (p < pe) {
- cmp_xattr(file1, file2, p, 0, false);
- p += strlen(p) + 1;
- }
- if (list1 != _list1) {
- free(list1);
- free(list2);
- }
-}
-
-/* Compares special NTFS data of the files, as accessed through extended
- * attributes. */
-static void special_cmp(const char *file1, const char *file2)
-{
- cmp_xattr(file1, file2, "system.ntfs_acl", 0, false);
- cmp_xattr(file1, file2, "system.ntfs_attrib", 0, false);
- cmp_xattr(file1, file2, "system.ntfs_dos_name", 0, true);
- cmp_xattr(file1, file2, "system.ntfs_reparse_data", 0, true);
- cmp_xattr(file1, file2, "system.ntfs_times", 16, false);
- cmp_ads(file1, file2);
-}
-
-
-/* Compares file1 on one NTFS volume to file2 on another NTFS volume. */
-static void ntfs_cmp(char file1[], int file1_len, char file2[], int file2_len)
-{
- struct stat st1, st2;
- u64 ino_from, ino_to;
-
- DEBUG("cmp files %s, %s", file1, file2);
- if (lstat(file1, &st1))
- error("Failed to stat `%s'", file1);
- if (lstat(file2, &st2))
- error("Failed to stat `%s'", file2);
- ino_from = st1.st_ino;
- ino_to = lookup_ino(ino_from);
- if (ino_to == -1)
- insert_ino(ino_from, st2.st_ino);
- else if (ino_to != st2.st_ino)
- difference("Inode number on `%s' is wrong", file2);
- if (st1.st_size != st2.st_size)
- difference("Sizes of `%s' and `%s' are not the same",
- file1, file2);
- if (st1.st_mode != st2.st_mode)
- difference("Modes of `%s' and `%s' are not the same",
- file1, file2);
- if (st1.st_atime != st2.st_atime)
- difference("Access times of `%s' and `%s' are not the same",
- file1, file2);
- if (st1.st_mtime != st2.st_mtime)
- difference("Modification times times of `%s' and `%s' are not the same",
- file1, file2);
-#if 0
- if (st1.st_ctime != st2.st_ctime)
- difference("Status change times of `%s' and `%s' are not the same",
- file1, file2);
-#endif
- if (st1.st_nlink != st2.st_nlink)
- difference("Link count of `%s' and `%s' are not the same",
- file1, file2);
- if (strcmp(file1, root1))
- special_cmp(file1, file2);
- if (S_ISREG(st1.st_mode))
- cmp(file1, file2, st1.st_size);
- else if (S_ISDIR(st1.st_mode)) {
- int ret1, ret2;
- int i;
- struct dirent **namelist1, **namelist2;
- const char *dir1 = file1, *dir2 = file2;
-
- ret1 = scandir(dir1, &namelist1, NULL, alphasort);
- if (ret1 == -1)
- error("Error scanning directory `%s'", dir1);
- ret2 = scandir(dir2, &namelist2, NULL, alphasort);
- if (ret2 == -1)
- error("Error scanning directory `%s'", dir2);
- if (ret1 != ret2)
- difference("Directories `%s' and `%s' do not contain "
- "the same number of entries", dir1, dir2);
- file1[file1_len] = '/';
- file2[file2_len] = '/';
- for (i = 0; i < ret1; i++) {
- int name_len;
- const char *name;
- if (strcmp(namelist1[i]->d_name, namelist2[i]->d_name)) {
- difference("Files `%s' and `%s' in directories "
- "`%s' and `%s', respectively, do "
- "not have the same name",
- namelist1[i]->d_name,
- namelist2[i]->d_name,
- dir1, dir2);
- }
- name = namelist1[i]->d_name;
- name_len = strlen(name);
- if (!(name[0] == '.' &&
- (name[1] == '\0' ||
- (name[1] == '.' && name[2] == '\0'))))
- {
- memcpy(file1 + file1_len + 1, name, name_len + 1);
- memcpy(file2 + file2_len + 1, name, name_len + 1);
- ntfs_cmp(file1, file1_len + 1 + name_len,
- file2, file2_len + 1 + name_len);
- }
-
- free(namelist1[i]);
- free(namelist2[i]);
- }
- free(namelist1);
- free(namelist2);
- file1[file1_len] = '\0';
- file2[file2_len] = '\0';
- }
-}
-
-int main(int argc, char **argv)
-{
- if (argc != 3) {
- fprintf(stderr, "Usage: %s DIR1 DIR2", argv[0]);
- return 2;
- }
- char dir1[4096];
- char dir2[4096];
- strcpy(dir1, argv[1]);
- strcpy(dir2, argv[2]);
- root1 = argv[1];
- root2 = argv[2];
- ntfs_cmp(dir1, strlen(dir1), dir2, strlen(dir2));
- return 0;
-}
git://wimlib.net / wimlib / blobdiff