#include <unistd.h>
#include <sys/stat.h>
+/* Real length of a dentry, including the alternate data stream entries, which
+ * are not included in the dentry->length field... */
+u64 dentry_total_length(const struct dentry *dentry)
+{
+ u64 length = dentry->length;
+ if (dentry->num_ads) {
+ u16 i = 0;
+ do {
+ length += WIM_ADS_ENTRY_DISK_SIZE +
+ dentry->ads_entries[i].stream_name_len;
+ } while (++i != dentry->num_ads);
+ /* If there are Alternate Stream Entries, we apparently need to
+ * round up to the NEXT 8-byte boundary, even if we are already
+ * aligned on one... */
+ length++;
+ }
+ /* Round to 8 byte boundary. */
+ return (length + 7) & ~7;
+}
/* Transfers file attributes from a `stat' buffer to a struct dentry. */
void stbuf_to_dentry(const struct stat *stbuf, struct dentry *dentry)
{
if (S_ISDIR(stbuf->st_mode))
- dentry->attributes = WIM_FILE_ATTRIBUTE_DIRECTORY;
+ dentry->attributes = FILE_ATTRIBUTE_DIRECTORY;
else
- dentry->attributes = WIM_FILE_ATTRIBUTE_NORMAL;
+ dentry->attributes = FILE_ATTRIBUTE_NORMAL;
}
/* Transfers file attributes from a struct dentry to a `stat' buffer. */
/* Advance the subdir offset by the amount of space the children
* of this dentry take up. */
do {
- *subdir_offset_p += child->length;
+ *subdir_offset_p += dentry_total_length(child);
child = child->next;
} while (child != dentry->children);
const char *name;
};
struct file_attr_flag file_attr_flags[] = {
- {WIM_FILE_ATTRIBUTE_READONLY, "READONLY"},
- {WIM_FILE_ATTRIBUTE_HIDDEN, "HIDDEN"},
- {WIM_FILE_ATTRIBUTE_SYSTEM, "SYSTEM"},
- {WIM_FILE_ATTRIBUTE_DIRECTORY, "DIRECTORY"},
- {WIM_FILE_ATTRIBUTE_ARCHIVE, "ARCHIVE"},
- {WIM_FILE_ATTRIBUTE_DEVICE, "DEVICE"},
- {WIM_FILE_ATTRIBUTE_NORMAL, "NORMAL"},
- {WIM_FILE_ATTRIBUTE_TEMPORARY, "TEMPORARY"},
- {WIM_FILE_ATTRIBUTE_SPARSE_FILE, "SPARSE_FILE"},
- {WIM_FILE_ATTRIBUTE_REPARSE_POINT, "REPARSE_POINT"},
- {WIM_FILE_ATTRIBUTE_COMPRESSED, "COMPRESSED"},
- {WIM_FILE_ATTRIBUTE_OFFLINE, "OFFLINE"},
- {WIM_FILE_ATTRIBUTE_NOT_CONTENT_INDEXED,"NOT_CONTENT_INDEXED"},
- {WIM_FILE_ATTRIBUTE_ENCRYPTED, "ENCRYPTED"},
- {WIM_FILE_ATTRIBUTE_VIRTUAL, "VIRTUAL"},
+ {FILE_ATTRIBUTE_READONLY, "READONLY"},
+ {FILE_ATTRIBUTE_HIDDEN, "HIDDEN"},
+ {FILE_ATTRIBUTE_SYSTEM, "SYSTEM"},
+ {FILE_ATTRIBUTE_DIRECTORY, "DIRECTORY"},
+ {FILE_ATTRIBUTE_ARCHIVE, "ARCHIVE"},
+ {FILE_ATTRIBUTE_DEVICE, "DEVICE"},
+ {FILE_ATTRIBUTE_NORMAL, "NORMAL"},
+ {FILE_ATTRIBUTE_TEMPORARY, "TEMPORARY"},
+ {FILE_ATTRIBUTE_SPARSE_FILE, "SPARSE_FILE"},
+ {FILE_ATTRIBUTE_REPARSE_POINT, "REPARSE_POINT"},
+ {FILE_ATTRIBUTE_COMPRESSED, "COMPRESSED"},
+ {FILE_ATTRIBUTE_OFFLINE, "OFFLINE"},
+ {FILE_ATTRIBUTE_NOT_CONTENT_INDEXED,"NOT_CONTENT_INDEXED"},
+ {FILE_ATTRIBUTE_ENCRYPTED, "ENCRYPTED"},
+ {FILE_ATTRIBUTE_VIRTUAL, "VIRTUAL"},
};
/* Prints a directory entry. @lookup_table is a pointer to the lookup table, or
printf("Attributes = 0x%x\n", dentry->attributes);
for (i = 0; i < ARRAY_LEN(file_attr_flags); i++)
if (file_attr_flags[i].flag & dentry->attributes)
- printf(" WIM_FILE_ATTRIBUTE_%s is set\n",
+ printf(" FILE_ATTRIBUTE_%s is set\n",
file_attr_flags[i].name);
printf("Security ID = %d\n", dentry->security_id);
printf("Subdir offset = %"PRIu64"\n", dentry->subdir_offset);
- /*printf("Unused1 = %"PRIu64"\n", dentry->unused1);*/
+ /*printf("Unused1 = 0x%"PRIu64"\n", dentry->unused1);*/
/*printf("Unused2 = %"PRIu64"\n", dentry->unused2);*/
printf("Creation Time = %"PRIu64"\n", dentry->creation_time);
printf("Last Access Time = %"PRIu64"\n", dentry->last_access_time);
printf("Hash = ");
print_hash(dentry->hash);
putchar('\n');
- printf("Reparse Tag = %u\n", dentry->reparse_tag);
- printf("Hard Link Group = %"PRIu64"\n", dentry->hard_link);
+ printf("Reparse Tag = 0x%"PRIx32"\n", dentry->reparse_tag);
+ printf("Hard Link Group = 0x%"PRIx64"\n", dentry->hard_link);
printf("Number of Alternate Data Streams = %hu\n", dentry->num_ads);
printf("Filename = \"");
print_string(dentry->file_name, dentry->file_name_len);
} else {
putchar('\n');
}
+ for (u16 i = 0; i < dentry->num_ads; i++) {
+ printf("[Alternate Stream Entry %u]\n", i);
+ printf("Name = \"%s\"\n", dentry->ads_entries[i].stream_name_utf8);
+ lte = lookup_resource(lookup_table, dentry->ads_entries[i].hash);
+ if (lte)
+ print_lookup_table_entry(lte, NULL);
+ else
+ putchar('\n');
+ }
return 0;
}
}
static int read_ads_entries(const u8 *p, struct dentry *dentry,
- unsigned remaining_size)
+ u64 remaining_size)
{
u16 num_ads = dentry->num_ads;
struct ads_entry *ads_entries = CALLOC(num_ads, sizeof(struct ads_entry));
int ret;
if (!ads_entries) {
- ERROR("Could not allocate memory for %u alternate data stream "
- "entries", num_ads);
+ ERROR("Could not allocate memory for %"PRIu16" "
+ "alternate data stream entries", num_ads);
return WIMLIB_ERR_NOMEM;
}
+ DEBUG2("Reading %"PRIu16" alternate data streams "
+ "(remaining size = %"PRIu64")", num_ads, remaining_size);
+
for (u16 i = 0; i < num_ads; i++) {
struct ads_entry *cur_entry = &ads_entries[i];
u64 length;
size_t utf8_len;
/* Read the base stream entry, excluding the stream name. */
if (remaining_size < WIM_ADS_ENTRY_DISK_SIZE) {
- ERROR("Stream entries go past end of directory entry");
+ ERROR("Stream entries go past end of metadata resource");
ret = WIMLIB_ERR_INVALID_DENTRY;
goto out_free_ads_entries;
}
remaining_size -= WIM_ADS_ENTRY_DISK_SIZE;
+ /*print_string(p + 40, 10);*/
+ /*print_byte_field(p, 50);*/
p = get_u64(p, &length); /* ADS entry length */
+
+ DEBUG2("ADS length = %"PRIu64, length);
+
p += 8; /* Unused */
p = get_bytes(p, WIM_HASH_SIZE, (u8*)cur_entry->hash);
p = get_u16(p, &cur_entry->stream_name_len);
+
+ DEBUG2("Stream name length = %u", cur_entry->stream_name_len);
+
cur_entry->stream_name = NULL;
cur_entry->stream_name_utf8 = NULL;
- if (remaining_size < cur_entry->stream_name_len) {
- ERROR("Stream entries go past end of directory entry");
+ if (remaining_size < cur_entry->stream_name_len + 2) {
+ ERROR("Stream entries go past end of metadata resource");
ret = WIMLIB_ERR_INVALID_DENTRY;
goto out_free_ads_entries;
}
+ remaining_size -= cur_entry->stream_name_len + 2;
cur_entry->stream_name = MALLOC(cur_entry->stream_name_len);
if (!cur_entry->stream_name) {
}
p = get_bytes(p, cur_entry->stream_name_len,
(u8*)cur_entry->stream_name);
+ p += 2; /* NULL terminator of stream name */
cur_entry->stream_name_utf8 = utf16_to_utf8(cur_entry->stream_name,
cur_entry->stream_name_len,
&utf8_len);
cur_entry->stream_name_len_utf8 = utf8_len;
+ print_byte_field(p, 16);
if (!cur_entry->stream_name_utf8) {
ret = WIMLIB_ERR_NOMEM;
* terminates the list of sibling directory entries. */
p = get_u64(&metadata_resource[offset], &dentry->length);
+ DEBUG("length = %zu, %zu\n", dentry->length, *(u64*)(&metadata_resource[offset]));
/* A zero length field (really a length of 8, since that's how big the
* directory entry is...) indicates that this is the end of directory
/* 2 unused fields */
p += 2 * sizeof(u64);
+ /*p = get_u64(p, &dentry->unused1);*/
+ /*p = get_u64(p, &dentry->unused2);*/
p = get_u64(p, &dentry->creation_time);
p = get_u64(p, &dentry->last_access_time);
p = get_bytes(p, WIM_HASH_SIZE, dentry->hash);
- p = get_u32(p, &dentry->reparse_tag);
+ /*
+ * I don't know what's going on here. It seems like M$ screwed up the
+ * reparse points, then put the fields in the same place and didn't
+ * document it. The WIM_HDR_FLAG_RP_FIX flag in the WIM header might
+ * have something to do with this, but it's not documented.
+ */
+ if (dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+ /* ??? */
+ u32 u1, u2;
+ p = get_u32(p, &u1);
+ /*p += 4;*/
+ p = get_u32(p, &dentry->reparse_tag);
+ p = get_u32(p, &u2);
+ /*p += 4;*/
+ dentry->hard_link = (u64)(u1) | ((u64)(u2) << 32);
+ } else {
+ p = get_u32(p, &dentry->reparse_tag);
+ p = get_u64(p, &dentry->hard_link);
+ }
- /* The reparse_reserved field does not actually exist. */
+ /* By the way, the reparse_reserved field does not actually exist (at
+ * least when the file is not a reparse point) */
- p = get_u64(p, &dentry->hard_link);
p = get_u16(p, &dentry->num_ads);
goto out_free_file_name_utf8;
}
- get_bytes(p, short_name_len, short_name);
+ p = get_bytes(p, short_name_len, short_name);
+
+ /* Some directory entries inexplicibly have a little over 70 bytes of
+ * extra data. The exact amount of data seems to be 72 bytes, but it is
+ * aligned on the next 8-byte boundary. Here's an example of the
+ * aligned data:
+ *
+ * 01000000400000006c786bbac58ede11b0bb00261870892ab6adb76fe63a3
+ * e468fca86530d2effa16c786bbac58ede11b0bb00261870892a0000000000
+ * 0000000000000000000000
+ *
+ * Here's one interpretation of how the data is laid out.
+ *
+ * struct unknown {
+ * u32 field1; (always 0x00000001)
+ * u32 field2; (always 0x40000000)
+ * u16 field3;
+ * u32 field4;
+ * u32 field5;
+ * u32 field6;
+ * u8 data[48]; (???)
+ * u64 reserved1; (always 0)
+ * u64 reserved2; (always 0)
+ * };*/
+#if 0
+ if (dentry->length - calculated_size >= WIM_ADS_ENTRY_DISK_SIZE) {
+ printf("%s: %lu / %lu (", file_name_utf8,
+ calculated_size, dentry->length);
+ print_string(p + WIM_ADS_ENTRY_DISK_SIZE, dentry->length - calculated_size - WIM_ADS_ENTRY_DISK_SIZE);
+ puts(")");
+ print_byte_field(p, dentry->length - calculated_size);
+ putchar('\n');
+ }
+#endif
if (dentry->num_ads != 0) {
ret = read_ads_entries(p, dentry,
- dentry->length - calculated_size);
+ metadata_resource_len - offset - calculated_size);
if (ret != 0)
goto out_free_short_name;
}
p = put_u64(p, dentry->creation_time);
p = put_u64(p, dentry->last_access_time);
p = put_u64(p, dentry->last_write_time);
- if (!is_empty_file_hash(dentry->hash))
- memcpy(p, dentry->hash, WIM_HASH_SIZE);
- else
- DEBUG("zero hash for %s\n", dentry->file_name_utf8);
+ memcpy(p, dentry->hash, WIM_HASH_SIZE);
p += WIM_HASH_SIZE;
p = put_u32(p, dentry->reparse_tag);
p = put_u64(p, dentry->hard_link);
}
/* Advance to the offset of the next child. */
- cur_offset += child->length;
+ cur_offset += dentry_total_length(child);
}
/* Link last child to first one, and set parent's
git://wimlib.net / wimlib / blobdiff