#include "lookup_table.h"
#include "security.h"
#include "endianness.h"
+#include "buffer_io.h"
#include <pthread.h>
#include <errno.h>
#define MAX_GET_SD_ACCESS_DENIED_WARNINGS 1
#define MAX_GET_SACL_PRIV_NOTHELD_WARNINGS 1
+#define MAX_CREATE_HARD_LINK_WARNINGS 5
struct win32_capture_state {
unsigned long num_get_sd_access_denied;
unsigned long num_get_sacl_priv_notheld;
#define MAX_SET_SD_ACCESS_DENIED_WARNINGS 1
#define MAX_SET_SACL_PRIV_NOTHELD_WARNINGS 1
+#ifdef ENABLE_ERROR_MESSAGES
+static void
+win32_error(u32 err_code)
+{
+ wchar_t *buffer;
+ DWORD nchars;
+ nchars = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM |
+ FORMAT_MESSAGE_ALLOCATE_BUFFER,
+ NULL, err_code, 0,
+ (wchar_t*)&buffer, 0, NULL);
+ if (nchars == 0) {
+ ERROR("Error printing error message! "
+ "Computer will self-destruct in 3 seconds.");
+ } else {
+ ERROR("Win32 error: %ls", buffer);
+ LocalFree(buffer);
+ }
+}
+#else /* ENABLE_ERROR_MESSAGES */
+# define win32_error(err_code)
+#endif /* !ENABLE_ERROR_MESSAGES */
+
/* Pointers to functions that are not available on all targetted versions of
* Windows (XP and later). NOTE: The WINAPI annotations seem to be important; I
* assume it specifies a certain calling convention. */
" `wimlib-imagex apply' with the --no-acls flag instead.\n"
;
-#ifdef ENABLE_ERROR_MESSAGES
-void
-win32_error(u32 err_code)
-{
- wchar_t *buffer;
- DWORD nchars;
- nchars = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM |
- FORMAT_MESSAGE_ALLOCATE_BUFFER,
- NULL, err_code, 0,
- (wchar_t*)&buffer, 0, NULL);
- if (nchars == 0) {
- ERROR("Error printing error message! "
- "Computer will self-destruct in 3 seconds.");
- } else {
- ERROR("Win32 error: %ls", buffer);
- LocalFree(buffer);
- }
-}
-
-void
-win32_error_last()
-{
- win32_error(GetLastError());
-}
-#endif
-
static HANDLE
win32_open_existing_file(const wchar_t *path, DWORD dwDesiredAccess)
{
}
int
-win32_read_file(const wchar_t *filename,
- void *handle, u64 offset, size_t size, void *buf)
+read_win32_file_prefix(const struct wim_lookup_table_entry *lte,
+ u64 size,
+ consume_data_callback_t cb,
+ void *ctx_or_buf,
+ int _ignored_flags)
{
- HANDLE h = handle;
+ int ret = 0;
+ void *out_buf;
DWORD err;
- DWORD bytesRead;
- LARGE_INTEGER liOffset = {.QuadPart = offset};
+ u64 bytes_remaining;
+
+ HANDLE hFile = win32_open_file_data_only(lte->file_on_disk);
+ if (hFile == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ ERROR("Failed to open \"%ls\"", lte->file_on_disk);
+ win32_error(err);
+ return WIMLIB_ERR_OPEN;
+ }
- wimlib_assert(size <= 0xffffffff);
+ if (cb)
+ out_buf = alloca(WIM_CHUNK_SIZE);
+ else
+ out_buf = ctx_or_buf;
- if (SetFilePointerEx(h, liOffset, NULL, FILE_BEGIN))
- if (ReadFile(h, buf, size, &bytesRead, NULL) && bytesRead == size)
- return 0;
- err = GetLastError();
- ERROR("Error reading \"%ls\"", filename);
- win32_error(err);
- return WIMLIB_ERR_READ;
+ bytes_remaining = size;
+ while (bytes_remaining) {
+ DWORD bytesToRead, bytesRead;
+
+ bytesToRead = min(WIM_CHUNK_SIZE, bytes_remaining);
+ if (!ReadFile(hFile, out_buf, bytesToRead, &bytesRead, NULL) ||
+ bytesRead != bytesToRead)
+ {
+ err = GetLastError();
+ ERROR("Failed to read data from \"%ls\"", lte->file_on_disk);
+ win32_error(err);
+ ret = WIMLIB_ERR_READ;
+ break;
+ }
+ bytes_remaining -= bytesRead;
+ if (cb) {
+ ret = (*cb)(out_buf, bytesRead, ctx_or_buf);
+ if (ret)
+ break;
+ } else {
+ out_buf += bytesRead;
+ }
+ }
+ CloseHandle(hFile);
+ return ret;
}
-void
-win32_close_file(void *handle)
+struct win32_encrypted_read_ctx {
+ consume_data_callback_t read_prefix_cb;
+ void *read_prefix_ctx_or_buf;
+ int wimlib_err_code;
+ void *buf;
+ size_t buf_filled;
+ u64 bytes_remaining;
+};
+
+static DWORD WINAPI
+win32_encrypted_export_cb(unsigned char *_data, void *_ctx, unsigned long len)
{
- CloseHandle((HANDLE)handle);
+ const void *data = _data;
+ struct win32_encrypted_read_ctx *ctx = _ctx;
+ int ret;
+
+ DEBUG("len = %lu", len);
+ if (ctx->read_prefix_cb) {
+ /* The length of the buffer passed to the ReadEncryptedFileRaw()
+ * export callback is undocumented, so we assume it may be of
+ * arbitrary size. */
+ size_t bytes_to_buffer = min(ctx->bytes_remaining - ctx->buf_filled,
+ len);
+ while (bytes_to_buffer) {
+ size_t bytes_to_copy_to_buf =
+ min(bytes_to_buffer, WIM_CHUNK_SIZE - ctx->buf_filled);
+
+ memcpy(ctx->buf + ctx->buf_filled, data,
+ bytes_to_copy_to_buf);
+ ctx->buf_filled += bytes_to_copy_to_buf;
+ data += bytes_to_copy_to_buf;
+ bytes_to_buffer -= bytes_to_copy_to_buf;
+
+ if (ctx->buf_filled == WIM_CHUNK_SIZE ||
+ ctx->buf_filled == ctx->bytes_remaining)
+ {
+ ret = (*ctx->read_prefix_cb)(ctx->buf,
+ ctx->buf_filled,
+ ctx->read_prefix_ctx_or_buf);
+ if (ret) {
+ ctx->wimlib_err_code = ret;
+ /* Shouldn't matter what error code is returned
+ * here, as long as it isn't ERROR_SUCCESS. */
+ return ERROR_READ_FAULT;
+ }
+ ctx->bytes_remaining -= ctx->buf_filled;
+ ctx->buf_filled = 0;
+ }
+ }
+ } else {
+ size_t len_to_copy = min(len, ctx->bytes_remaining);
+ memcpy(ctx->read_prefix_ctx_or_buf, data, len_to_copy);
+ ctx->bytes_remaining -= len_to_copy;
+ ctx->read_prefix_ctx_or_buf += len_to_copy;
+ }
+ return ERROR_SUCCESS;
}
+int
+read_win32_encrypted_file_prefix(const struct wim_lookup_table_entry *lte,
+ u64 size,
+ consume_data_callback_t cb,
+ void *ctx_or_buf,
+ int _ignored_flags)
+{
+ struct win32_encrypted_read_ctx export_ctx;
+ DWORD err;
+ void *file_ctx;
+ int ret;
+
+ DEBUG("Reading %"PRIu64" bytes from encryted file \"%ls\"",
+ size, lte->file_on_disk);
+
+ export_ctx.read_prefix_cb = cb;
+ export_ctx.read_prefix_ctx_or_buf = ctx_or_buf;
+ export_ctx.wimlib_err_code = 0;
+ if (cb) {
+ export_ctx.buf = MALLOC(WIM_CHUNK_SIZE);
+ if (!export_ctx.buf)
+ return WIMLIB_ERR_NOMEM;
+ } else {
+ export_ctx.buf = NULL;
+ }
+ export_ctx.bytes_remaining = size;
+
+ err = OpenEncryptedFileRawW(lte->file_on_disk, 0, &file_ctx);
+ if (err != ERROR_SUCCESS) {
+ ERROR("Failed to open encrypted file \"%ls\" for raw read",
+ lte->file_on_disk);
+ win32_error(err);
+ ret = WIMLIB_ERR_OPEN;
+ goto out_free_buf;
+ }
+ err = ReadEncryptedFileRaw(win32_encrypted_export_cb,
+ &export_ctx, file_ctx);
+ if (err != ERROR_SUCCESS) {
+ ERROR("Failed to read encrypted file \"%ls\"",
+ lte->file_on_disk);
+ win32_error(err);
+ ret = export_ctx.wimlib_err_code;
+ if (ret == 0)
+ ret = WIMLIB_ERR_READ;
+ } else if (export_ctx.bytes_remaining != 0) {
+ ERROR("Only could read %"PRIu64" of %"PRIu64" bytes from "
+ "encryted file \"%ls\"",
+ size - export_ctx.bytes_remaining, size,
+ lte->file_on_disk);
+ ret = WIMLIB_ERR_READ;
+ } else {
+ ret = 0;
+ }
+ CloseEncryptedFileRaw(file_ctx);
+out_free_buf:
+ FREE(export_ctx.buf);
+ return ret;
+}
+
+/* Given a path, which may not yet exist, get a set of flags that describe the
+ * features of the volume the path is on. */
+static int
+win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret)
+{
+ wchar_t *volume;
+ BOOL bret;
+ DWORD vol_flags;
+
+ if (path[0] != L'\0' && path[0] != L'\\' &&
+ path[0] != L'/' && path[1] == L':')
+ {
+ /* Path starts with a drive letter; use it. */
+ volume = alloca(4 * sizeof(wchar_t));
+ volume[0] = path[0];
+ volume[1] = path[1];
+ volume[2] = L'\\';
+ volume[3] = L'\0';
+ } else {
+ /* Path does not start with a drive letter; use the volume of
+ * the current working directory. */
+ volume = NULL;
+ }
+ bret = GetVolumeInformationW(volume, /* lpRootPathName */
+ NULL, /* lpVolumeNameBuffer */
+ 0, /* nVolumeNameSize */
+ NULL, /* lpVolumeSerialNumber */
+ NULL, /* lpMaximumComponentLength */
+ &vol_flags, /* lpFileSystemFlags */
+ NULL, /* lpFileSystemNameBuffer */
+ 0); /* nFileSystemNameSize */
+ if (!bret) {
+ DWORD err = GetLastError();
+ WARNING("Failed to get volume information for path \"%ls\"", path);
+ win32_error(err);
+ vol_flags = 0xffffffff;
+ }
+
+ DEBUG("using vol_flags = %x", vol_flags);
+ *vol_flags_ret = vol_flags;
+ return 0;
+}
+
+
static u64
FILETIME_to_u64(const FILETIME *ft)
{
win32_get_short_name(struct wim_dentry *dentry, const wchar_t *path)
{
WIN32_FIND_DATAW dat;
- if (FindFirstFileW(path, &dat) && dat.cAlternateFileName[0] != L'\0') {
- size_t short_name_nbytes = wcslen(dat.cAlternateFileName) *
- sizeof(wchar_t);
- size_t n = short_name_nbytes + sizeof(wchar_t);
- dentry->short_name = MALLOC(n);
- if (!dentry->short_name)
- return WIMLIB_ERR_NOMEM;
- memcpy(dentry->short_name, dat.cAlternateFileName, n);
- dentry->short_name_nbytes = short_name_nbytes;
- }
+ HANDLE hFind;
+ int ret = 0;
+
/* If we can't read the short filename for some reason, we just ignore
* the error and assume the file has no short name. I don't think this
* should be an issue, since the short names are essentially obsolete
* anyway. */
- return 0;
+ hFind = FindFirstFileW(path, &dat);
+ if (hFind != INVALID_HANDLE_VALUE) {
+ if (dat.cAlternateFileName[0] != L'\0') {
+ DEBUG("\"%ls\": short name \"%ls\"", path, dat.cAlternateFileName);
+ size_t short_name_nbytes = wcslen(dat.cAlternateFileName) *
+ sizeof(wchar_t);
+ size_t n = short_name_nbytes + sizeof(wchar_t);
+ dentry->short_name = MALLOC(n);
+ if (dentry->short_name) {
+ memcpy(dentry->short_name, dat.cAlternateFileName, n);
+ dentry->short_name_nbytes = short_name_nbytes;
+ } else {
+ ret = WIMLIB_ERR_NOMEM;
+ }
+ }
+ FindClose(hFind);
+ }
+ return ret;
}
static int
win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
wchar_t *path,
size_t path_num_chars,
- struct wim_lookup_table *lookup_table,
- struct wim_inode_table *inode_table,
- struct sd_set *sd_set,
- const struct wimlib_capture_config *config,
- int add_image_flags,
- wimlib_progress_func_t progress_func,
- struct win32_capture_state *state);
+ struct add_image_params *params,
+ struct win32_capture_state *state,
+ unsigned vol_flags);
/* Reads the directory entries of directory using a Win32 API and recursively
* calls win32_build_dentry_tree() on them. */
win32_recurse_directory(struct wim_dentry *root,
wchar_t *dir_path,
size_t dir_path_num_chars,
- struct wim_lookup_table *lookup_table,
- struct wim_inode_table *inode_table,
- struct sd_set *sd_set,
- const struct wimlib_capture_config *config,
- int add_image_flags,
- wimlib_progress_func_t progress_func,
- struct win32_capture_state *state)
+ struct add_image_params *params,
+ struct win32_capture_state *state,
+ unsigned vol_flags)
{
WIN32_FIND_DATAW dat;
HANDLE hFind;
DWORD err;
int ret;
+ DEBUG("Recurse to directory \"%ls\"", dir_path);
+
/* Begin reading the directory by calling FindFirstFileW. Unlike UNIX
* opendir(), FindFirstFileW has file globbing built into it. But this
* isn't what we actually want, so just add a dummy glob to get all
ret = win32_build_dentry_tree_recursive(&child,
dir_path,
path_len,
- lookup_table,
- inode_table,
- sd_set,
- config,
- add_image_flags,
- progress_func,
- state);
+ params,
+ state,
+ vol_flags);
dir_path[dir_path_num_chars] = L'\0';
if (ret)
goto out_find_close;
return ret;
}
-/* Load a reparse point into a WIM inode. It is just stored in memory.
- *
- * @hFile: Open handle to a reparse point, with permission to read the reparse
- * data.
+int
+win32_get_file_and_vol_ids(const wchar_t *path, u64 *ino_ret, u64 *dev_ret)
+{
+ HANDLE hFile;
+ DWORD err;
+ BY_HANDLE_FILE_INFORMATION file_info;
+ int ret;
+
+ hFile = win32_open_existing_file(path, FILE_READ_ATTRIBUTES);
+ if (hFile == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ WARNING("Failed to open \"%ls\" to get file and volume IDs",
+ path);
+ win32_error(err);
+ return WIMLIB_ERR_OPEN;
+ }
+
+ if (!GetFileInformationByHandle(hFile, &file_info)) {
+ err = GetLastError();
+ ERROR("Failed to get file information for \"%ls\"", path);
+ win32_error(err);
+ ret = WIMLIB_ERR_STAT;
+ } else {
+ *ino_ret = ((u64)file_info.nFileIndexHigh << 32) |
+ (u64)file_info.nFileIndexLow;
+ *dev_ret = file_info.dwVolumeSerialNumber;
+ ret = 0;
+ }
+ CloseHandle(hFile);
+ return ret;
+}
+
+/* Reparse point fixup status code */
+enum rp_status {
+ /* Reparse point corresponded to an absolute symbolic link or junction
+ * point that pointed outside the directory tree being captured, and
+ * therefore was excluded. */
+ RP_EXCLUDED = 0x0,
+
+ /* Reparse point was not fixed as it was either a relative symbolic
+ * link, a mount point, or something else we could not understand. */
+ RP_NOT_FIXED = 0x1,
+
+ /* Reparse point corresponded to an absolute symbolic link or junction
+ * point that pointed inside the directory tree being captured, where
+ * the target was specified by a "full" \??\ prefixed path, and
+ * therefore was fixed to be relative to the root of the directory tree
+ * being captured. */
+ RP_FIXED_FULLPATH = 0x2,
+
+ /* Same as RP_FIXED_FULLPATH, except the absolute link target did not
+ * have the \??\ prefix. It may have begun with a drive letter though.
+ * */
+ RP_FIXED_ABSPATH = 0x4,
+
+ /* Either RP_FIXED_FULLPATH or RP_FIXED_ABSPATH. */
+ RP_FIXED = RP_FIXED_FULLPATH | RP_FIXED_ABSPATH,
+};
+
+/* Given the "substitute name" target of a Windows reparse point, try doing a
+ * fixup where we change it to be absolute relative to the root of the directory
+ * tree being captured.
*
- * @inode: WIM inode for the reparse point.
+ * Note that this is only executed when WIMLIB_ADD_IMAGE_FLAG_RPFIX has been
+ * set.
*
- * @lookup_table: Stream lookup table for the WIM; an entry will be added to it
- * for the reparse point unless an entry already exists for
- * the exact same data stream.
+ * @capture_root_ino and @capture_root_dev indicate the inode number and device
+ * of the root of the directory tree being captured. They are meant to identify
+ * this directory (as an alternative to its actual path, which could potentially
+ * be reached via multiple destinations due to other symbolic links). This may
+ * not work properly on FAT, which doesn't seem to supply proper inode numbers
+ * or file IDs. However, FAT doesn't support reparse points so this function
+ * wouldn't even be called anyway. */
+static enum rp_status
+win32_maybe_rpfix_target(wchar_t *target, size_t *target_nchars_p,
+ u64 capture_root_ino, u64 capture_root_dev)
+{
+ size_t target_nchars= *target_nchars_p;
+ size_t stripped_chars;
+ wchar_t *orig_target;
+
+ if (target_nchars == 0)
+ /* Invalid reparse point (empty target) */
+ return RP_NOT_FIXED;
+
+ if (target[0] == L'\\') {
+ if (target_nchars >= 2 && target[1] == L'\\') {
+ /* Probably a volume. Can't do anything with it. */
+ DEBUG("Not fixing target (probably a volume)");
+ return RP_NOT_FIXED;
+ } else if (target_nchars >= 7 &&
+ target[1] == '?' &&
+ target[2] == '?' &&
+ target[3] == '\\' &&
+ target[4] != '\0' &&
+ target[5] == ':' &&
+ target[6] == '\\')
+ {
+ DEBUG("Full style path");
+ /* Full \??\x:\ style path (may be junction or symlink)
+ * */
+ stripped_chars = 6;
+ } else {
+ DEBUG("Absolute target without drive letter");
+ /* Absolute target, without drive letter */
+ stripped_chars = 0;
+ }
+ } else if (target_nchars >= 3 &&
+ target[0] != L'\0' &&
+ target[1] == L':' &&
+ target[2] == L'\\')
+ {
+ DEBUG("Absolute target with drive letter");
+ /* Absolute target, with drive letter */
+ stripped_chars = 2;
+ } else {
+ DEBUG("Relative symlink or other link");
+ /* Relative symlink or other unexpected format */
+ return RP_NOT_FIXED;
+ }
+ target[target_nchars] = L'\0';
+ orig_target = target;
+ target = fixup_symlink(target + stripped_chars, capture_root_ino, capture_root_dev);
+ if (!target)
+ return RP_EXCLUDED;
+
+ target_nchars = wcslen(target);
+ wmemmove(orig_target + stripped_chars, target, target_nchars + 1);
+ *target_nchars_p = target_nchars + stripped_chars;
+ DEBUG("Fixed reparse point (new target: \"%ls\")", orig_target);
+ if (stripped_chars == 6)
+ return RP_FIXED_FULLPATH;
+ else
+ return RP_FIXED_ABSPATH;
+}
+
+static enum rp_status
+win32_do_capture_rpfix(char *rpbuf, DWORD *rpbuflen_p,
+ u64 capture_root_ino, u64 capture_root_dev)
+{
+ const char *p_get;
+ char *p_put;
+ u16 substitute_name_offset;
+ u16 substitute_name_len;
+ wchar_t *target;
+ size_t target_nchars;
+ enum rp_status status;
+ u32 rptag;
+ DWORD rpbuflen = *rpbuflen_p;
+
+ if (rpbuflen < 16) /* Invalid reparse point (length too small) */
+ return RP_NOT_FIXED;
+ p_get = get_u32(rpbuf, &rptag);
+ p_get += 4;
+ p_get = get_u16(p_get, &substitute_name_offset);
+ p_get = get_u16(p_get, &substitute_name_len);
+ p_get += 4;
+ if (rptag == WIM_IO_REPARSE_TAG_SYMLINK) {
+ if (rpbuflen < 20) /* Invalid reparse point (length too small) */
+ return RP_NOT_FIXED;
+ p_get += 4;
+ }
+ if ((DWORD)substitute_name_offset +
+ substitute_name_len + (p_get - rpbuf) > rpbuflen)
+ /* Invalid reparse point (length too small) */
+ return RP_NOT_FIXED;
+
+ target = (wchar_t*)&p_get[substitute_name_offset];
+ target_nchars = substitute_name_len / 2;
+ /* Note: target is not necessarily null-terminated */
+
+ status = win32_maybe_rpfix_target(target, &target_nchars,
+ capture_root_ino, capture_root_dev);
+ if (status & RP_FIXED) {
+ size_t target_nbytes = target_nchars * 2;
+ size_t print_nbytes = target_nbytes;
+ wchar_t target_copy[target_nchars];
+ wchar_t *print_name = target_copy;
+
+ if (status == RP_FIXED_FULLPATH) {
+ /* "full path", meaning \??\ prefixed. We should not
+ * include this prefix in the print name, as it is
+ * apparently meant for the filesystem driver only. */
+ print_nbytes -= 8;
+ print_name += 4;
+ }
+ wmemcpy(target_copy, target, target_nchars);
+ p_put = rpbuf + 8;
+ p_put = put_u16(p_put, 0); /* Substitute name offset */
+ p_put = put_u16(p_put, target_nbytes); /* Substitute name length */
+ p_put = put_u16(p_put, target_nbytes + 2); /* Print name offset */
+ p_put = put_u16(p_put, print_nbytes); /* Print name length */
+ if (rptag == WIM_IO_REPARSE_TAG_SYMLINK)
+ p_put = put_u32(p_put, 1);
+ p_put = put_bytes(p_put, target_nbytes, target_copy);
+ p_put = put_u16(p_put, 0);
+ p_put = put_bytes(p_put, print_nbytes, print_name);
+ p_put = put_u16(p_put, 0);
+
+ /* Wrote the end of the reparse data. Recalculate the length,
+ * set the length field correctly, and return it. */
+ rpbuflen = p_put - rpbuf;
+ put_u16(rpbuf + 4, rpbuflen - 8);
+ *rpbuflen_p = rpbuflen;
+ }
+ return status;
+}
+
+/* Load a reparse point into a WIM inode. It is just stored in memory.
*
- * @path: External path to the reparse point. Used for error messages only.
+ * @hFile is the open handle to a reparse point, with permission to read the
+ * reparse data.
*
- * Returns 0 on success; nonzero on failure. */
+ * @inode is the WIM inode for the reparse point.
+ */
static int
-win32_capture_reparse_point(HANDLE hFile,
+win32_capture_reparse_point(struct wim_dentry **root_p,
+ HANDLE hFile,
struct wim_inode *inode,
- struct wim_lookup_table *lookup_table,
- const wchar_t *path)
+ const wchar_t *path,
+ struct add_image_params *params)
{
+ DEBUG("Capturing reparse point \"%ls\"", path);
+
/* "Reparse point data, including the tag and optional GUID,
* cannot exceed 16 kilobytes." - MSDN */
- char reparse_point_buf[16 * 1024];
+ char reparse_point_buf[REPARSE_POINT_MAX_SIZE];
DWORD bytesReturned;
+ char *fixed_buf;
+ DWORD fixed_len;
if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
NULL, /* "Not used with this operation; set to NULL" */
return WIMLIB_ERR_READ;
}
inode->i_reparse_tag = le32_to_cpu(*(u32*)reparse_point_buf);
- return inode_add_ads_with_data(inode, L"",
- reparse_point_buf + 8,
- bytesReturned - 8, lookup_table);
-}
-/* Calculate the SHA1 message digest of a Win32 data stream, which may be either
- * an unnamed or named data stream.
- *
- * @path: Path to the file, with the stream noted at the end for named
- * streams. UTF-16LE encoding.
- *
- * @hash: On success, the SHA1 message digest of the stream is written to
- * this location.
- *
- * Returns 0 on success; nonzero on failure.
- */
-static int
-win32_sha1sum(const wchar_t *path, u8 hash[SHA1_HASH_SIZE])
-{
- HANDLE hFile;
- SHA_CTX ctx;
- u8 buf[32768];
- DWORD bytesRead;
- int ret;
-
- hFile = win32_open_file_data_only(path);
- if (hFile == INVALID_HANDLE_VALUE)
- return WIMLIB_ERR_OPEN;
-
- sha1_init(&ctx);
- for (;;) {
- if (!ReadFile(hFile, buf, sizeof(buf), &bytesRead, NULL)) {
- ret = WIMLIB_ERR_READ;
- goto out_close_handle;
+ if (params->add_image_flags & WIMLIB_ADD_IMAGE_FLAG_RPFIX &&
+ (inode->i_reparse_tag == WIM_IO_REPARSE_TAG_SYMLINK ||
+ inode->i_reparse_tag == WIM_IO_REPARSE_TAG_MOUNT_POINT))
+ {
+ /* Try doing reparse point fixup */
+ enum rp_status status;
+ status = win32_do_capture_rpfix(reparse_point_buf,
+ &bytesReturned,
+ params->capture_root_ino,
+ params->capture_root_dev);
+ if (status == RP_EXCLUDED) {
+ /* Absolute path points out of capture tree. Free the
+ * dentry; we're not including it at all. */
+ free_dentry(*root_p);
+ *root_p = NULL;
+ return 0;
+ } else if (status & RP_FIXED) {
+ /* Absolute path fixup was done. */
+ inode->i_not_rpfixed = 0;
}
- if (bytesRead == 0)
- break;
- sha1_update(&ctx, buf, bytesRead);
}
- ret = 0;
- sha1_final(hash, &ctx);
-out_close_handle:
- CloseHandle(hFile);
- return ret;
+ return inode_set_unnamed_stream(inode, reparse_point_buf + 8,
+ bytesReturned - 8, params->lookup_table);
}
/* Scans an unnamed or named stream of a Win32 file (not a reparse point
WIN32_FIND_STREAM_DATA *dat)
{
struct wim_ads_entry *ads_entry;
- u8 hash[SHA1_HASH_SIZE];
struct wim_lookup_table_entry *lte;
int ret;
wchar_t *stream_name, *colon;
bool is_named_stream;
wchar_t *spath;
size_t spath_nchars;
- DWORD err;
size_t spath_buf_nbytes;
const wchar_t *relpath_prefix;
const wchar_t *colonchar;
+ DEBUG("Capture \"%ls\" stream \"%ls\"", path, dat->cStreamName);
+
/* The stream name should be returned as :NAME:TYPE */
stream_name = dat->cStreamName;
if (*stream_name != L':')
}
}
+ /* If zero length stream, no lookup table entry needed. */
+ if ((u64)dat->StreamSize.QuadPart == 0) {
+ ret = 0;
+ goto out;
+ }
+
/* Create a UTF-16LE string @spath that gives the filename, then a
* colon, then the stream name. Or, if it's an unnamed stream, just the
* filename. It is MALLOC()'ed so that it can be saved in the
swprintf(spath, L"%ls%ls%ls%ls",
relpath_prefix, path, colonchar, stream_name);
- ret = win32_sha1sum(spath, hash);
- if (ret) {
- err = GetLastError();
- ERROR("Failed to read \"%ls\" to calculate SHA1sum", spath);
- win32_error(err);
+ /* Make a new wim_lookup_table_entry */
+ lte = new_lookup_table_entry();
+ if (!lte) {
+ ret = WIMLIB_ERR_NOMEM;
goto out_free_spath;
}
-
- lte = __lookup_resource(lookup_table, hash);
- if (lte) {
- /* Use existing wim_lookup_table_entry that has the same SHA1
- * message digest */
- lte->refcnt++;
- } else {
- /* Make a new wim_lookup_table_entry */
- lte = new_lookup_table_entry();
- if (!lte) {
- ret = WIMLIB_ERR_NOMEM;
- goto out_free_spath;
- }
- lte->file_on_disk = spath;
- lte->win32_file_on_disk_fp = INVALID_HANDLE_VALUE;
- spath = NULL;
+ lte->file_on_disk = spath;
+ spath = NULL;
+ if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED && !is_named_stream)
+ lte->resource_location = RESOURCE_WIN32_ENCRYPTED;
+ else
lte->resource_location = RESOURCE_WIN32;
- lte->resource_entry.original_size = (uint64_t)dat->StreamSize.QuadPart;
- lte->resource_entry.size = (uint64_t)dat->StreamSize.QuadPart;
- copy_hash(lte->hash, hash);
- lookup_table_insert(lookup_table, lte);
- }
- if (is_named_stream)
+ lte->resource_entry.original_size = (u64)dat->StreamSize.QuadPart;
+
+ u32 stream_id;
+ if (is_named_stream) {
+ stream_id = ads_entry->stream_id;
ads_entry->lte = lte;
- else
+ } else {
+ stream_id = 0;
inode->i_lte = lte;
+ }
+ lookup_table_insert_unhashed(lookup_table, lte, inode, stream_id);
+ ret = 0;
out_free_spath:
FREE(spath);
out:
* @file_size: Size of unnamed data stream. (Used only if alternate
* data streams API appears to be unavailable.)
*
+ * @vol_flags: Flags that specify features of the volume being
+ * captured.
+ *
* Returns 0 on success; nonzero on failure.
*/
static int
size_t path_num_chars,
struct wim_inode *inode,
struct wim_lookup_table *lookup_table,
- u64 file_size)
+ u64 file_size,
+ unsigned vol_flags)
{
WIN32_FIND_STREAM_DATA dat;
int ret;
HANDLE hFind;
DWORD err;
- if (win32func_FindFirstStreamW == NULL)
+ DEBUG("Capturing streams from \"%ls\"", path);
+
+ if (win32func_FindFirstStreamW == NULL ||
+ !(vol_flags & FILE_NAMED_STREAMS))
goto unnamed_only;
hFind = win32func_FindFirstStreamW(path, FindStreamInfoStandard, &dat, 0);
if (hFind == INVALID_HANDLE_VALUE) {
err = GetLastError();
-
if (err == ERROR_CALL_NOT_IMPLEMENTED)
goto unnamed_only;
(FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
&& err == ERROR_HANDLE_EOF)
{
+ DEBUG("ERROR_HANDLE_EOF (ok)");
return 0;
} else {
if (err == ERROR_ACCESS_DENIED) {
- /* XXX This maybe should be an error. */
- WARNING("Failed to look up data streams "
- "of \"%ls\": Access denied!\n%ls",
- path, capture_access_denied_msg);
- return 0;
+ ERROR("Failed to look up data streams "
+ "of \"%ls\": Access denied!\n%ls",
+ path, capture_access_denied_msg);
+ return WIMLIB_ERR_READ;
} else {
ERROR("Failed to look up data streams "
"of \"%ls\"", path);
FindClose(hFind);
return ret;
unnamed_only:
- /* FindFirstStreamW() API is not available. Only capture the unnamed
- * data stream. */
+ /* FindFirstStreamW() API is not available, or the volume does not
+ * support named streams. Only capture the unnamed data stream. */
+ DEBUG("Only capturing unnamed data stream");
if (inode->i_attributes &
(FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
{
win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
wchar_t *path,
size_t path_num_chars,
- struct wim_lookup_table *lookup_table,
- struct wim_inode_table *inode_table,
- struct sd_set *sd_set,
- const struct wimlib_capture_config *config,
- int add_image_flags,
- wimlib_progress_func_t progress_func,
- struct win32_capture_state *state)
+ struct add_image_params *params,
+ struct win32_capture_state *state,
+ unsigned vol_flags)
{
struct wim_dentry *root = NULL;
struct wim_inode *inode;
DWORD err;
u64 file_size;
int ret = 0;
+ const wchar_t *basename;
- if (exclude_path(path, path_num_chars, config, true)) {
- if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) {
+ if (exclude_path(path, path_num_chars, params->config, true)) {
+ if (params->add_image_flags & WIMLIB_ADD_IMAGE_FLAG_ROOT) {
ERROR("Cannot exclude the root directory from capture");
ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG;
goto out;
}
- if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE)
- && progress_func)
+ if ((params->add_image_flags & WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE)
+ && params->progress_func)
{
union wimlib_progress_info info;
info.scan.cur_path = path;
info.scan.excluded = true;
- progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
+ params->progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
}
goto out;
}
- if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
- && progress_func)
+ if ((params->add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
+ && params->progress_func)
{
union wimlib_progress_info info;
info.scan.cur_path = path;
info.scan.excluded = false;
- progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
+ params->progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
}
HANDLE hFile = win32_open_existing_file(path,
goto out_close_handle;
}
- /* Create a WIM dentry with an associated inode, which may be shared */
- ret = inode_table_new_dentry(inode_table,
- path_basename_with_len(path, path_num_chars),
- ((u64)file_info.nFileIndexHigh << 32) |
- (u64)file_info.nFileIndexLow,
- file_info.dwVolumeSerialNumber,
- &root);
- if (ret)
- goto out_close_handle;
+ /* Create a WIM dentry with an associated inode, which may be shared.
+ *
+ * However, we need to explicitly check for directories and files with
+ * only 1 link and refuse to hard link them. This is because Windows
+ * has a bug where it can return duplicate File IDs for files and
+ * directories on the FAT filesystem. */
+ basename = path_basename_with_len(path, path_num_chars);
+ if (!(file_info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
+ && file_info.nNumberOfLinks > 1)
+ {
+ ret = inode_table_new_dentry(params->inode_table,
+ basename,
+ ((u64)file_info.nFileIndexHigh << 32) |
+ (u64)file_info.nFileIndexLow,
+ file_info.dwVolumeSerialNumber,
+ &root);
+ if (ret)
+ goto out_close_handle;
+ } else {
+ ret = new_dentry_with_inode(basename, &root);
+ if (ret)
+ goto out_close_handle;
+ list_add_tail(&root->d_inode->i_list, ¶ms->inode_table->extra_inodes);
+ }
+
ret = win32_get_short_name(root, path);
if (ret)
inode->i_last_access_time = FILETIME_to_u64(&file_info.ftLastAccessTime);
inode->i_resolved = 1;
- add_image_flags &= ~(WIMLIB_ADD_IMAGE_FLAG_ROOT | WIMLIB_ADD_IMAGE_FLAG_SOURCE);
+ params->add_image_flags &= ~(WIMLIB_ADD_IMAGE_FLAG_ROOT | WIMLIB_ADD_IMAGE_FLAG_SOURCE);
- if (!(add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)) {
- ret = win32_get_security_descriptor(root, sd_set, path, state,
- add_image_flags);
+ if (!(params->add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS)
+ && (vol_flags & FILE_PERSISTENT_ACLS))
+ {
+ ret = win32_get_security_descriptor(root, params->sd_set,
+ path, state,
+ params->add_image_flags);
if (ret)
goto out_close_handle;
}
ret = win32_capture_streams(path,
path_num_chars,
inode,
- lookup_table,
- file_size);
+ params->lookup_table,
+ file_size,
+ vol_flags);
if (ret)
goto out_close_handle;
ret = win32_recurse_directory(root,
path,
path_num_chars,
- lookup_table,
- inode_table,
- sd_set,
- config,
- add_image_flags,
- progress_func,
- state);
+ params,
+ state,
+ vol_flags);
} else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
/* Reparse point: save the reparse tag and data. Alternate data
* streams are not captured, if it's even possible for a reparse
* point to have alternate data streams... */
- ret = win32_capture_reparse_point(hFile,
- inode,
- lookup_table,
- path);
+ ret = win32_capture_reparse_point(&root, hFile, inode, path, params);
} else {
/* Not a directory, not a reparse point; capture the default
* file contents and any alternate data streams. */
ret = win32_capture_streams(path,
path_num_chars,
inode,
- lookup_table,
- file_size);
+ params->lookup_table,
+ file_size,
+ vol_flags);
}
out_close_handle:
CloseHandle(hFile);
if (ret == 0)
*root_ret = root;
else
- free_dentry_tree(root, lookup_table);
+ free_dentry_tree(root, params->lookup_table);
return ret;
}
int
win32_build_dentry_tree(struct wim_dentry **root_ret,
const wchar_t *root_disk_path,
- struct wim_lookup_table *lookup_table,
- struct wim_inode_table *inode_table,
- struct sd_set *sd_set,
- const struct wimlib_capture_config *config,
- int add_image_flags,
- wimlib_progress_func_t progress_func,
- void *extra_arg)
+ struct add_image_params *params)
{
size_t path_nchars;
wchar_t *path;
int ret;
struct win32_capture_state state;
+ unsigned vol_flags;
+
path_nchars = wcslen(root_disk_path);
if (path_nchars > 32767)
return WIMLIB_ERR_INVALID_PARAM;
+ ret = win32_get_file_and_vol_ids(root_disk_path,
+ ¶ms->capture_root_ino,
+ ¶ms->capture_root_dev);
+ if (ret)
+ return ret;
+
+ win32_get_vol_flags(root_disk_path, &vol_flags);
+
/* There is no check for overflow later when this buffer is being used!
* But the max path length on NTFS is 32767 characters, and paths need
* to be written specially to even go past 260 characters, so we should
wmemcpy(path, root_disk_path, path_nchars + 1);
memset(&state, 0, sizeof(state));
- ret = win32_build_dentry_tree_recursive(root_ret,
- path,
- path_nchars,
- lookup_table,
- inode_table,
- sd_set,
- config,
- add_image_flags,
- progress_func,
- &state);
+ ret = win32_build_dentry_tree_recursive(root_ret, path,
+ path_nchars, params,
+ &state, vol_flags);
FREE(path);
if (ret == 0)
- win32_do_capture_warnings(&state, add_image_flags);
+ win32_do_capture_warnings(&state, params->add_image_flags);
return ret;
}
* leave 8 bytes of space for them at the beginning of the buffer, then
* set them manually. */
buf = alloca(len + 8);
- ret = read_full_wim_resource(lte, buf + 8, 0);
+ ret = read_full_resource_into_buf(lte, buf + 8, false);
if (ret)
return ret;
*(u32*)(buf + 0) = cpu_to_le32(reparse_tag);
return 0;
}
+static int
+win32_set_compressed(HANDLE hFile, const wchar_t *path)
+{
+ USHORT format = COMPRESSION_FORMAT_DEFAULT;
+ DWORD bytesReturned = 0;
+ if (!DeviceIoControl(hFile, FSCTL_SET_COMPRESSION,
+ &format, sizeof(USHORT),
+ NULL, 0,
+ &bytesReturned, NULL))
+ {
+ /* Could be a warning only, but we only call this if the volume
+ * supports compression. So I'm calling this an error. */
+ DWORD err = GetLastError();
+ ERROR("Failed to set compression flag on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
+static int
+win32_set_sparse(HANDLE hFile, const wchar_t *path)
+{
+ DWORD bytesReturned = 0;
+ if (!DeviceIoControl(hFile, FSCTL_SET_SPARSE,
+ NULL, 0,
+ NULL, 0,
+ &bytesReturned, NULL))
+ {
+ /* Could be a warning only, but we only call this if the volume
+ * supports sparse files. So I'm calling this an error. */
+ DWORD err = GetLastError();
+ WARNING("Failed to set sparse flag on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+ return 0;
+}
+
/*
* Sets the security descriptor on an extracted file.
*/
static int
-win32_extract_chunk(const void *buf, size_t len, u64 offset, void *arg)
+win32_extract_chunk(const void *buf, size_t len, void *arg)
{
HANDLE hStream = arg;
win32_extract_chunk, hStream);
}
+static int
+do_win32_extract_encrypted_stream(const wchar_t *path,
+ const struct wim_lookup_table_entry *lte)
+{
+ ERROR("Extracting encryted streams not implemented");
+ return WIMLIB_ERR_INVALID_PARAM;
+}
+
static bool
path_is_root_of_drive(const wchar_t *path)
{
return (*path == L'\0');
}
+static DWORD
+win32_get_create_flags_and_attributes(DWORD i_attributes)
+{
+ DWORD attributes;
+
+ /*
+ * Some attributes cannot be set by passing them to CreateFile(). In
+ * particular:
+ *
+ * FILE_ATTRIBUTE_DIRECTORY:
+ * CreateDirectory() must be called instead of CreateFile().
+ *
+ * FILE_ATTRIBUTE_SPARSE_FILE:
+ * Needs an ioctl.
+ * See: win32_set_sparse().
+ *
+ * FILE_ATTRIBUTE_COMPRESSED:
+ * Not clear from the documentation, but apparently this needs an
+ * ioctl as well.
+ * See: win32_set_compressed().
+ *
+ * FILE_ATTRIBUTE_REPARSE_POINT:
+ * Needs an ioctl, with the reparse data specified.
+ * See: win32_set_reparse_data().
+ *
+ * In addition, clear any file flags in the attributes that we don't
+ * want, but also specify FILE_FLAG_OPEN_REPARSE_POINT and
+ * FILE_FLAG_BACKUP_SEMANTICS as we are a backup application.
+ */
+ attributes = i_attributes & ~(FILE_ATTRIBUTE_SPARSE_FILE |
+ FILE_ATTRIBUTE_COMPRESSED |
+ FILE_ATTRIBUTE_REPARSE_POINT |
+ FILE_ATTRIBUTE_DIRECTORY |
+ FILE_FLAG_DELETE_ON_CLOSE |
+ FILE_FLAG_NO_BUFFERING |
+ FILE_FLAG_OPEN_NO_RECALL |
+ FILE_FLAG_OVERLAPPED |
+ FILE_FLAG_RANDOM_ACCESS |
+ /*FILE_FLAG_SESSION_AWARE |*/
+ FILE_FLAG_SEQUENTIAL_SCAN |
+ FILE_FLAG_WRITE_THROUGH);
+ return attributes |
+ FILE_FLAG_OPEN_REPARSE_POINT |
+ FILE_FLAG_BACKUP_SEMANTICS;
+}
+
+static bool
+inode_has_special_attributes(const struct wim_inode *inode)
+{
+ return (inode->i_attributes & (FILE_ATTRIBUTE_COMPRESSED |
+ FILE_ATTRIBUTE_REPARSE_POINT |
+ FILE_ATTRIBUTE_SPARSE_FILE)) != 0;
+}
+
+/* Set compression or sparse attributes, and reparse data, if supported by the
+ * volume. */
+static int
+win32_set_special_attributes(HANDLE hFile, const struct wim_inode *inode,
+ struct wim_lookup_table_entry *unnamed_stream_lte,
+ const wchar_t *path, unsigned vol_flags)
+{
+ int ret;
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_COMPRESSED) {
+ if (vol_flags & FILE_FILE_COMPRESSION) {
+ DEBUG("Setting compression flag on \"%ls\"", path);
+ ret = win32_set_compressed(hFile, path);
+ if (ret)
+ return ret;
+ } else {
+ DEBUG("Cannot set compression attribute on \"%ls\": "
+ "volume does not support transparent compression",
+ path);
+ }
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_SPARSE_FILE) {
+ if (vol_flags & FILE_SUPPORTS_SPARSE_FILES) {
+ DEBUG("Setting sparse flag on \"%ls\"", path);
+ ret = win32_set_sparse(hFile, path);
+ if (ret)
+ return ret;
+ } else {
+ DEBUG("Cannot set sparse attribute on \"%ls\": "
+ "volume does not support sparse files",
+ path);
+ }
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+ if (vol_flags & FILE_SUPPORTS_REPARSE_POINTS) {
+ DEBUG("Setting reparse data on \"%ls\"", path);
+ ret = win32_set_reparse_data(hFile, inode->i_reparse_tag,
+ unnamed_stream_lte, path);
+ if (ret)
+ return ret;
+ } else {
+ DEBUG("Cannot set reparse data on \"%ls\": volume "
+ "does not support reparse points", path);
+ }
+ }
+
+ return 0;
+}
+
static int
win32_extract_stream(const struct wim_inode *inode,
const wchar_t *path,
const wchar_t *stream_name_utf16,
- struct wim_lookup_table_entry *lte)
+ struct wim_lookup_table_entry *lte,
+ unsigned vol_flags)
{
wchar_t *stream_path;
HANDLE h;
}
}
DEBUG("Created directory \"%ls\"", stream_path);
- if (!(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
+ if (!inode_has_special_attributes(inode)) {
ret = 0;
goto out;
}
+ DEBUG("Directory \"%ls\" has special attributes!",
+ stream_path);
creationDisposition = OPEN_EXISTING;
}
}
DEBUG("Opening \"%ls\"", stream_path);
h = CreateFileW(stream_path,
- GENERIC_WRITE,
+ GENERIC_READ | GENERIC_WRITE,
0,
NULL,
creationDisposition,
- FILE_FLAG_OPEN_REPARSE_POINT |
- FILE_FLAG_BACKUP_SEMANTICS |
- inode->i_attributes,
+ win32_get_create_flags_and_attributes(inode->i_attributes),
NULL);
if (h == INVALID_HANDLE_VALUE) {
err = GetLastError();
goto fail;
}
- if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT &&
- stream_name_utf16 == NULL)
- {
- DEBUG("Setting reparse data on \"%ls\"", path);
- ret = win32_set_reparse_data(h, inode->i_reparse_tag, lte, path);
+ if (stream_name_utf16 == NULL && inode_has_special_attributes(inode)) {
+ ret = win32_set_special_attributes(h, inode, lte, path,
+ vol_flags);
if (ret)
goto fail_close_handle;
- } else {
+ }
+
+ if (!(inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
if (lte) {
DEBUG("Extracting \"%ls\" (len = %"PRIu64")",
stream_path, wim_resource_size(lte));
- ret = do_win32_extract_stream(h, lte);
+ if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED
+ && stream_name_utf16 == NULL
+ && (vol_flags & FILE_SUPPORTS_ENCRYPTION))
+ {
+ ret = do_win32_extract_encrypted_stream(stream_path,
+ lte);
+ } else {
+ ret = do_win32_extract_stream(h, lte);
+ }
if (ret)
goto fail_close_handle;
}
*/
static int
win32_extract_streams(const struct wim_inode *inode,
- const wchar_t *path, u64 *completed_bytes_p)
+ const wchar_t *path, u64 *completed_bytes_p,
+ unsigned vol_flags)
{
struct wim_lookup_table_entry *unnamed_lte;
int ret;
unnamed_lte = inode_unnamed_lte_resolved(inode);
- ret = win32_extract_stream(inode, path, NULL, unnamed_lte);
+ ret = win32_extract_stream(inode, path, NULL, unnamed_lte,
+ vol_flags);
if (ret)
goto out;
- if (unnamed_lte)
+ if (unnamed_lte && inode->i_extracted_file == NULL)
*completed_bytes_p += wim_resource_size(unnamed_lte);
+
+ if (!(vol_flags & FILE_NAMED_STREAMS))
+ goto out;
for (u16 i = 0; i < inode->i_num_ads; i++) {
const struct wim_ads_entry *ads_entry = &inode->i_ads_entries[i];
if (ads_entry->stream_name_nbytes != 0) {
ret = win32_extract_stream(inode,
path,
ads_entry->stream_name,
- ads_entry->lte);
+ ads_entry->lte,
+ vol_flags);
if (ret)
break;
- if (ads_entry->lte)
+ if (ads_entry->lte && inode->i_extracted_file == NULL)
*completed_bytes_p += wim_resource_size(ads_entry->lte);
}
}
struct wim_inode *inode = dentry->d_inode;
DWORD err;
+ if (!args->have_vol_flags) {
+ win32_get_vol_flags(output_path, &args->vol_flags);
+ args->have_vol_flags = true;
+ /* Warn the user about data that may not be extracted. */
+ if (!(args->vol_flags & FILE_SUPPORTS_SPARSE_FILES))
+ WARNING("Volume does not support sparse files!\n"
+ " Sparse files will be extracted as non-sparse.");
+ if (!(args->vol_flags & FILE_SUPPORTS_REPARSE_POINTS))
+ WARNING("Volume does not support reparse points!\n"
+ " Reparse point data will not be extracted.");
+ if (!(args->vol_flags & FILE_NAMED_STREAMS)) {
+ WARNING("Volume does not support named data streams!\n"
+ " Named data streams will not be extracted.");
+ }
+ if (!(args->vol_flags & FILE_SUPPORTS_ENCRYPTION)) {
+ WARNING("Volume does not support encryption!\n"
+ " Encrypted files will be extracted as raw data.");
+ }
+ if (!(args->vol_flags & FILE_FILE_COMPRESSION)) {
+ WARNING("Volume does not support transparent compression!\n"
+ " Compressed files will be extracted as non-compressed.");
+ }
+ if (!(args->vol_flags & FILE_PERSISTENT_ACLS)) {
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_STRICT_ACLS) {
+ ERROR("Strict ACLs requested, but the volume does not "
+ "support ACLs!");
+ return WIMLIB_ERR_VOLUME_LACKS_FEATURES;
+ } else {
+ WARNING("Volume does not support persistent ACLS!\n"
+ " File permissions will not be extracted.");
+ }
+ }
+ }
+
if (inode->i_nlink > 1 && inode->i_extracted_file != NULL) {
/* Linked file, with another name already extracted. Create a
* hard link. */
+
+ /* There is a volume flag for this (FILE_SUPPORTS_HARD_LINKS),
+ * but it's only available on Windows 7 and later. So no use
+ * even checking it, really. Instead, CreateHardLinkW() will
+ * apparently return ERROR_INVALID_FUNCTION if the volume does
+ * not support hard links. */
DEBUG("Creating hard link \"%ls => %ls\"",
output_path, inode->i_extracted_file);
- if (!CreateHardLinkW(output_path, inode->i_extracted_file, NULL)) {
- err = GetLastError();
+ if (CreateHardLinkW(output_path, inode->i_extracted_file, NULL))
+ return 0;
+
+ err = GetLastError();
+ if (err != ERROR_INVALID_FUNCTION) {
ERROR("Can't create hard link \"%ls => %ls\"",
output_path, inode->i_extracted_file);
win32_error(err);
return WIMLIB_ERR_LINK;
+ } else {
+ args->num_hard_links_failed++;
+ if (args->num_hard_links_failed < MAX_CREATE_HARD_LINK_WARNINGS) {
+ WARNING("Can't create hard link \"%ls => %ls\":\n"
+ " Volume does not support hard links!\n"
+ " Falling back to extracting a copy of the file.",
+ output_path, inode->i_extracted_file);
+ } else if (args->num_hard_links_failed == MAX_CREATE_HARD_LINK_WARNINGS) {
+ WARNING("Suppressing further hard linking warnings...");
+ }
}
- } else {
- /* Create the file, directory, or reparse point, and extract the
- * data streams. */
- ret = win32_extract_streams(inode, output_path,
- &args->progress.extract.completed_bytes);
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+ !(args->vol_flags & FILE_SUPPORTS_REPARSE_POINTS))
+ {
+ WARNING("Skipping extraction of reparse point \"%ls\":\n"
+ " Not supported by destination filesystem",
+ output_path);
+ struct wim_lookup_table_entry *lte;
+ lte = inode_unnamed_lte_resolved(inode);
+ if (lte)
+ args->progress.extract.completed_bytes += wim_resource_size(lte);
+ return 0;
+ }
+
+ /* Create the file, directory, or reparse point, and extract the
+ * data streams. */
+ ret = win32_extract_streams(inode, output_path,
+ &args->progress.extract.completed_bytes,
+ args->vol_flags);
+ if (ret)
+ return ret;
+
+ if (inode->i_security_id >= 0 &&
+ !(args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_ACLS)
+ && (args->vol_flags & FILE_PERSISTENT_ACLS))
+ {
+ ret = win32_set_security_data(inode, output_path, args);
if (ret)
return ret;
-
- if (inode->i_security_id >= 0 &&
- !(args->extract_flags & WIMLIB_EXTRACT_FLAG_NO_ACLS))
- {
- ret = win32_set_security_data(inode, output_path, args);
- if (ret)
- return ret;
- }
- if (inode->i_nlink > 1) {
- /* Save extracted path for a later call to
- * CreateHardLinkW() if this inode has multiple links.
- * */
- inode->i_extracted_file = WSTRDUP(output_path);
- if (!inode->i_extracted_file)
- ret = WIMLIB_ERR_NOMEM;
- }
+ }
+ if (inode->i_nlink > 1) {
+ /* Save extracted path for a later call to
+ * CreateHardLinkW() if this inode has multiple links.
+ * */
+ inode->i_extracted_file = WSTRDUP(output_path);
+ if (!inode->i_extracted_file)
+ ret = WIMLIB_ERR_NOMEM;
}
return 0;
}
HANDLE h;
const struct wim_inode *inode = dentry->d_inode;
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT &&
+ !(args->vol_flags & FILE_SUPPORTS_REPARSE_POINTS))
+ {
+ /* Skip reparse points not extracted */
+ return 0;
+ }
+
+ /* Windows doesn't let you change the timestamps of the root directory
+ * (at least on FAT, which is dumb but expected since FAT doesn't store
+ * any metadata about the root directory...) */
+ if (path_is_root_of_drive(path))
+ return 0;
+
DEBUG("Opening \"%ls\" to set timestamps", path);
h = win32_open_existing_file(path, FILE_WRITE_ATTRIBUTES);
if (h == INVALID_HANDLE_VALUE) {
git://wimlib.net / wimlib / blobdiff