* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
-#ifndef __WIN32__
-# error "This file contains Windows code"
-#endif
+#ifdef __WIN32__
#include "config.h"
#include <windows.h>
#include <ntdef.h>
#include <wchar.h>
-#include <shlwapi.h> /* shlwapi.h for PathMatchSpecA() */
+#include <shlwapi.h> /* shlwapi.h for PathMatchSpecW() */
#ifdef ERROR /* windows.h defines this */
# undef ERROR
#endif
#include "lookup_table.h"
#include "security.h"
#include "endianness.h"
+#include <pthread.h>
#include <errno.h>
+#define MAX_GET_SD_ACCESS_DENIED_WARNINGS 1
+#define MAX_GET_SACL_PRIV_NOTHELD_WARNINGS 1
+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
if (hKernel32 == NULL) {
DEBUG("Loading Kernel32.dll");
- hKernel32 = LoadLibraryA("Kernel32.dll");
+ hKernel32 = LoadLibraryW(L"Kernel32.dll");
if (hKernel32 == NULL) {
err = GetLastError();
WARNING("Can't load Kernel32.dll");
}
}
-static const wchar_t *access_denied_msg =
+static const wchar_t *capture_access_denied_msg =
L" If you are not running this program as the administrator, you may\n"
" need to do so, so that all data and metadata can be backed up.\n"
" Otherwise, there may be no way to access the desired data or\n"
" metadata without taking ownership of the file or directory.\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 const wchar_t *apply_access_denied_msg =
+L"If you are not running this program as the administrator, you may\n"
+ " need to do so, so that all data and metadata can be extracted\n"
+ " exactly as the origignal copy. However, if you do not care that\n"
+ " the security descriptors are extracted correctly, you could run\n"
+ " `wimlib-imagex apply' with the --no-acls flag instead.\n"
+ ;
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 lookup_table_entry *lte,
+ u64 size,
+ consume_data_callback_t cb,
+ void *ctx_or_buf,
+ int _ignored_flags)
{
- HANDLE h = handle;
+ int ret;
+ void *out_buf;
DWORD err;
- DWORD bytesRead;
- LARGE_INTEGER liOffset = {.QuadPart = offset};
+ u64 bytes_remaining;
- wimlib_assert(size <= 0xffffffff);
+ 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);
+ ret = WIMLIB_ERR_OPEN;
+ goto out;
+ }
- 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;
-}
+ if (cb)
+ out_buf = alloca(WIM_CHUNK_SIZE);
+ else
+ out_buf = ctx_or_buf;
-void
-win32_close_file(void *handle)
-{
- CloseHandle((HANDLE)handle);
+ bytes_remaining = size;
+ while (bytes_remaining) {
+ DWORD bytesToRead, bytesRead;
+
+ bytesToRead = min(WIM_CHUNK_SIZE, bytes_remaining);
+ if (!ReadFile(h, 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;
+ goto out_close_handle;
+ }
+ bytes_remaining -= bytesRead;
+ if (cb) {
+ ret = cb(out_buf, bytesRead, ctx_or_buf);
+ if (ret)
+ goto out_close_handle;
+ } else {
+ out_buf += bytesRead;
+ }
+ }
+out_close_handle:
+ CloseHandle(hFile);
+out:
+ return ret;
}
static u64
memcpy(dentry->short_name, dat.cAlternateFileName, n);
dentry->short_name_nbytes = short_name_nbytes;
}
+ /* 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;
}
static int
win32_get_security_descriptor(struct wim_dentry *dentry,
struct sd_set *sd_set,
- const wchar_t *path)
+ const wchar_t *path,
+ struct win32_capture_state *state,
+ int add_image_flags)
{
SECURITY_INFORMATION requestedInformation;
DWORD lenNeeded = 0;
BOOL status;
DWORD err;
+ unsigned long n;
requestedInformation = DACL_SECURITY_INFORMATION |
SACL_SECURITY_INFORMATION |
OWNER_SECURITY_INFORMATION |
GROUP_SECURITY_INFORMATION;
+again:
/* Request length of security descriptor */
status = GetFileSecurityW(path, requestedInformation,
NULL, 0, &lenNeeded);
}
}
- if (err == ERROR_ACCESS_DENIED) {
- WARNING("Failed to read security descriptor of \"%ls\": "
- "Access denied!\n%ls", path, access_denied_msg);
+ if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_STRICT_ACLS)
+ goto fail;
+
+ switch (err) {
+ case ERROR_PRIVILEGE_NOT_HELD:
+ if (requestedInformation & SACL_SECURITY_INFORMATION) {
+ n = state->num_get_sacl_priv_notheld++;
+ requestedInformation &= ~SACL_SECURITY_INFORMATION;
+ if (n < MAX_GET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"We don't have enough privileges to read the full security\n"
+" descriptor of \"%ls\"!\n"
+" Re-trying with SACL omitted.\n", path);
+ } else if (n == MAX_GET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"Suppressing further privileges not held error messages when reading\n"
+" security descriptors.");
+ }
+ goto again;
+ }
+ /* Fall through */
+ case ERROR_ACCESS_DENIED:
+ n = state->num_get_sd_access_denied++;
+ if (n < MAX_GET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING("Failed to read security descriptor of \"%ls\": "
+ "Access denied!\n%ls", path, capture_access_denied_msg);
+ } else if (n == MAX_GET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING("Suppressing further access denied errors messages i"
+ "when reading security descriptors");
+ }
return 0;
- } else {
+ default:
+fail:
ERROR("Failed to read security descriptor of \"%ls\"", path);
win32_error(err);
return WIMLIB_ERR_READ;
static int
win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
- const wchar_t *path,
- const size_t path_num_chars,
+ 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 capture_config *config,
+ const struct wimlib_capture_config *config,
int add_image_flags,
- wimlib_progress_func_t progress_func);
+ wimlib_progress_func_t progress_func,
+ struct win32_capture_state *state);
/* Reads the directory entries of directory using a Win32 API and recursively
* calls win32_build_dentry_tree() on them. */
static int
win32_recurse_directory(struct wim_dentry *root,
- const wchar_t *dir_path,
- const size_t dir_path_num_chars,
+ 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 capture_config *config,
+ const struct wimlib_capture_config *config,
int add_image_flags,
- wimlib_progress_func_t progress_func)
+ wimlib_progress_func_t progress_func,
+ struct win32_capture_state *state)
{
WIN32_FIND_DATAW dat;
HANDLE hFind;
DWORD err;
int ret;
- {
- /* 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 entries. */
- wchar_t pattern_buf[dir_path_num_chars + 3];
- swprintf(pattern_buf, L"%ls/*", dir_path);
- hFind = FindFirstFileW(pattern_buf, &dat);
- }
+ /* 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
+ * entries. */
+ dir_path[dir_path_num_chars] = L'/';
+ dir_path[dir_path_num_chars + 1] = L'*';
+ dir_path[dir_path_num_chars + 2] = L'\0';
+ hFind = FindFirstFileW(dir_path, &dat);
+ dir_path[dir_path_num_chars] = L'\0';
+
if (hFind == INVALID_HANDLE_VALUE) {
err = GetLastError();
if (err == ERROR_FILE_NOT_FOUND) {
ret = 0;
do {
/* Skip . and .. entries */
- if (wcscmp(dat.cFileName, L".") && wcscmp(dat.cFileName, L".."))
- {
- size_t filename_num_chars = wcslen(dat.cFileName);
- size_t new_path_num_chars = dir_path_num_chars + 1 +
- filename_num_chars;
- wchar_t new_path[new_path_num_chars + 1];
-
- swprintf(new_path, L"%ls/%ls", dir_path, dat.cFileName);
-
- struct wim_dentry *child;
- ret = win32_build_dentry_tree_recursive(&child,
- new_path,
- new_path_num_chars,
- lookup_table,
- sd_set,
- config,
- add_image_flags,
- progress_func);
- if (ret)
- goto out_find_close;
- if (child)
- dentry_add_child(root, child);
- }
+ if (dat.cFileName[0] == L'.' &&
+ (dat.cFileName[1] == L'\0' ||
+ (dat.cFileName[1] == L'.' &&
+ dat.cFileName[2] == L'\0')))
+ continue;
+ size_t filename_len = wcslen(dat.cFileName);
+
+ dir_path[dir_path_num_chars] = L'/';
+ wmemcpy(dir_path + dir_path_num_chars + 1,
+ dat.cFileName,
+ filename_len + 1);
+
+ struct wim_dentry *child;
+ size_t path_len = dir_path_num_chars + 1 + filename_len;
+ ret = win32_build_dentry_tree_recursive(&child,
+ dir_path,
+ path_len,
+ lookup_table,
+ inode_table,
+ sd_set,
+ config,
+ add_image_flags,
+ progress_func,
+ state);
+ dir_path[dir_path_num_chars] = L'\0';
+ if (ret)
+ goto out_find_close;
+ if (child)
+ dentry_add_child(root, child);
} while (FindNextFileW(hFind, &dat));
err = GetLastError();
if (err != ERROR_NO_MORE_FILES) {
- ERROR("Failed to read directory \"%s\"", dir_path);
+ ERROR("Failed to read directory \"%ls\"", dir_path);
win32_error(err);
if (ret == 0)
ret = WIMLIB_ERR_READ;
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 (bytesRead == 0)
- break;
- sha1_update(&ctx, buf, bytesRead);
- }
- ret = 0;
- sha1_final(hash, &ctx);
-out_close_handle:
- CloseHandle(hFile);
- return ret;
-}
-
/* Scans an unnamed or named stream of a Win32 file (not a reparse point
* stream); calculates its SHA1 message digest and either creates a `struct
* wim_lookup_table_entry' in memory for it, or uses an existing 'struct
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->file_on_disk = spath;
+ spath = NULL;
+ lte->resource_location = RESOURCE_WIN32;
+ lte->resource_entry.original_size = (u64)dat->StreamSize.QuadPart;
- 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->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)
+ 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);
out_free_spath:
FREE(spath);
out:
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, access_denied_msg);
+ path, capture_access_denied_msg);
return 0;
} else {
ERROR("Failed to look up data streams "
FindClose(hFind);
return ret;
unnamed_only:
+ /* FindFirstStreamW() API is not available. Only capture the unnamed
+ * data stream. */
if (inode->i_attributes &
(FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
{
ret = 0;
} else {
+ /* Just create our own WIN32_FIND_STREAM_DATA for an unnamed
+ * stream to reduce the code to a call to the
+ * already-implemented win32_capture_stream() */
wcscpy(dat.cStreamName, L"::$DATA");
dat.StreamSize.QuadPart = file_size;
ret = win32_capture_stream(path,
static int
win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
- const wchar_t *path,
- const size_t path_num_chars,
+ 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 capture_config *config,
+ const struct wimlib_capture_config *config,
int add_image_flags,
- wimlib_progress_func_t progress_func)
+ wimlib_progress_func_t progress_func,
+ struct win32_capture_state *state)
{
struct wim_dentry *root = NULL;
struct wim_inode *inode;
u64 file_size;
int ret = 0;
- if (exclude_path(path, config, true)) {
+ if (exclude_path(path, path_num_chars, config, true)) {
if (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_VERBOSE)
+ if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_EXCLUDE_VERBOSE)
&& progress_func)
{
union wimlib_progress_info info;
goto out_close_handle;
}
- /* Create a WIM dentry */
- ret = new_dentry_with_timeless_inode(path_basename_with_len(path, path_num_chars),
- &root);
+ /* 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;
+
+ ret = win32_get_short_name(root, path);
if (ret)
goto out_close_handle;
- /* Start preparing the associated WIM inode */
inode = root->d_inode;
+ if (inode->i_nlink > 1) /* Shared inode; nothing more to do */
+ goto out_close_handle;
+
inode->i_attributes = file_info.dwFileAttributes;
inode->i_creation_time = FILETIME_to_u64(&file_info.ftCreationTime);
inode->i_last_write_time = FILETIME_to_u64(&file_info.ftLastWriteTime);
inode->i_last_access_time = FILETIME_to_u64(&file_info.ftLastAccessTime);
- inode->i_ino = ((u64)file_info.nFileIndexHigh << 32) |
- (u64)file_info.nFileIndexLow;
-
inode->i_resolved = 1;
- add_image_flags &= ~(WIMLIB_ADD_IMAGE_FLAG_ROOT | WIMLIB_ADD_IMAGE_FLAG_SOURCE);
- /* Get DOS name and security descriptor (if any). */
- ret = win32_get_short_name(root, path);
- if (ret)
- goto out_close_handle;
+ 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);
+ ret = win32_get_security_descriptor(root, sd_set, path, state,
+ add_image_flags);
if (ret)
goto out_close_handle;
}
path,
path_num_chars,
lookup_table,
+ inode_table,
sd_set,
config,
add_image_flags,
- progress_func);
+ progress_func,
+ state);
} else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
- /* Reparse point: save the reparse tag and data */
+ /* 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,
return ret;
}
+static void
+win32_do_capture_warnings(const struct win32_capture_state *state,
+ int add_image_flags)
+{
+ if (state->num_get_sacl_priv_notheld == 0 &&
+ state->num_get_sd_access_denied == 0)
+ return;
+
+ WARNING("");
+ WARNING("Built dentry tree successfully, but with the following problem(s):");
+ if (state->num_get_sacl_priv_notheld != 0) {
+ WARNING("Could not capture SACL (System Access Control List)\n"
+ " on %lu files or directories.",
+ state->num_get_sacl_priv_notheld);
+ }
+ if (state->num_get_sd_access_denied != 0) {
+ WARNING("Could not capture security descriptor at all\n"
+ " on %lu files or directories.",
+ state->num_get_sd_access_denied);
+ }
+ WARNING(
+ "Try running the program as the Administrator to make sure all the\n"
+" desired metadata has been captured exactly. However, if you\n"
+" do not care about capturing security descriptors correctly, then\n"
+" nothing more needs to be done%ls\n",
+ (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_NO_ACLS) ? L"." :
+ L", although you might consider\n"
+" passing the --no-acls flag to `wimlib-imagex capture' or\n"
+" `wimlib-imagex append' to explicitly capture no security\n"
+" descriptors.\n");
+}
+
/* Win32 version of capturing a directory tree */
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 capture_config *config,
+ const struct wimlib_capture_config *config,
int add_image_flags,
wimlib_progress_func_t progress_func,
void *extra_arg)
size_t path_nchars;
wchar_t *path;
int ret;
-
+ struct win32_capture_state state;
+
path_nchars = wcslen(root_disk_path);
if (path_nchars > 32767)
return WIMLIB_ERR_INVALID_PARAM;
if (!path)
return WIMLIB_ERR_NOMEM;
+ 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);
+ progress_func,
+ &state);
FREE(path);
+ if (ret == 0)
+ win32_do_capture_warnings(&state, add_image_flags);
return ret;
}
-/* Replacement for POSIX fnmatch() (partial functionality only) */
-int
-fnmatch(const wchar_t *pattern, const wchar_t *string, int flags)
-{
- if (PathMatchSpecW(string, pattern))
- return 0;
- else
- return FNM_NOMATCH;
-}
-
static int
win32_set_reparse_data(HANDLE h,
u32 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))
+ {
+ /* Warning only */
+ DWORD err = GetLastError();
+ WARNING("Failed to set compression flag on \"%ls\"", path);
+ win32_error(err);
+ }
+ 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))
+ {
+ /* Warning only */
+ DWORD err = GetLastError();
+ WARNING("Failed to set sparse flag on \"%ls\"", path);
+ win32_error(err);
+ }
+ return 0;
+}
+
+/*
+ * Sets the security descriptor on an extracted file.
+ */
+static int
+win32_set_security_data(const struct wim_inode *inode,
+ const wchar_t *path,
+ struct apply_args *args)
+{
+ PSECURITY_DESCRIPTOR descriptor;
+ unsigned long n;
+ DWORD err;
+
+ descriptor = wim_const_security_data(args->w)->descriptors[inode->i_security_id];
+
+ SECURITY_INFORMATION securityInformation = DACL_SECURITY_INFORMATION |
+ SACL_SECURITY_INFORMATION |
+ OWNER_SECURITY_INFORMATION |
+ GROUP_SECURITY_INFORMATION;
+again:
+ if (SetFileSecurityW(path, securityInformation, descriptor))
+ return 0;
+ err = GetLastError();
+ if (args->extract_flags & WIMLIB_EXTRACT_FLAG_STRICT_ACLS)
+ goto fail;
+ switch (err) {
+ case ERROR_PRIVILEGE_NOT_HELD:
+ if (securityInformation & SACL_SECURITY_INFORMATION) {
+ n = args->num_set_sacl_priv_notheld++;
+ securityInformation &= ~SACL_SECURITY_INFORMATION;
+ if (n < MAX_SET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"We don't have enough privileges to set the full security\n"
+" descriptor on \"%ls\"!\n", path);
+ if (args->num_set_sd_access_denied +
+ args->num_set_sacl_priv_notheld == 1)
+ {
+ WARNING("%ls", apply_access_denied_msg);
+ }
+ WARNING("Re-trying with SACL omitted.\n", path);
+ } else if (n == MAX_GET_SACL_PRIV_NOTHELD_WARNINGS) {
+ WARNING(
+"Suppressing further 'privileges not held' error messages when setting\n"
+" security descriptors.");
+ }
+ goto again;
+ }
+ /* Fall through */
+ case ERROR_INVALID_OWNER:
+ case ERROR_ACCESS_DENIED:
+ n = args->num_set_sd_access_denied++;
+ if (n < MAX_SET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING("Failed to set security descriptor on \"%ls\": "
+ "Access denied!\n", path);
+ if (args->num_set_sd_access_denied +
+ args->num_set_sacl_priv_notheld == 1)
+ {
+ WARNING("%ls", apply_access_denied_msg);
+ }
+ } else if (n == MAX_SET_SD_ACCESS_DENIED_WARNINGS) {
+ WARNING(
+"Suppressing further access denied error messages when setting\n"
+" security descriptors");
+ }
+ return 0;
+ default:
+fail:
+ ERROR("Failed to set security descriptor on \"%ls\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_WRITE;
+ }
+}
+
static int
win32_extract_chunk(const void *buf, size_t len, u64 offset, void *arg)
win32_extract_chunk, hStream);
}
+static bool
+path_is_root_of_drive(const wchar_t *path)
+{
+ if (!*path)
+ return false;
+
+ if (*path != L'/' && *path != L'\\') {
+ if (*(path + 1) == L':')
+ path += 2;
+ else
+ return false;
+ }
+ while (*path == L'/' || *path == L'\\')
+ 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;
+}
+
+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)
+{
+ int ret;
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+ 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;
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_COMPRESSED) {
+ DEBUG("Setting compression flag on \"%ls\"", path);
+ ret = win32_set_compressed(hFile, path);
+ if (ret)
+ return ret;
+ }
+
+ if (inode->i_attributes & FILE_ATTRIBUTE_SPARSE_FILE) {
+ DEBUG("Setting sparse flag on \"%ls\"", path);
+ ret = win32_set_sparse(hFile, path);
+ if (ret)
+ return ret;
+ }
+ 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,
- const struct wim_security_data *security_data)
+ struct wim_lookup_table_entry *lte)
{
wchar_t *stream_path;
HANDLE h;
DWORD err;
DWORD creationDisposition = CREATE_ALWAYS;
- SECURITY_ATTRIBUTES *secattr;
-
- if (security_data && inode->i_security_id != -1) {
- secattr = alloca(sizeof(*secattr));
- secattr->nLength = sizeof(*secattr);
- secattr->lpSecurityDescriptor = security_data->descriptors[inode->i_security_id];
- secattr->bInheritHandle = FALSE;
- } else {
- secattr = NULL;
- }
-
if (stream_name_utf16) {
/* Named stream. Create a buffer that contains the UTF-16LE
* string [.\]@path:@stream_name_utf16. This is needed to
* the call to CreateFileW() will merely open the directory that
* was already created rather than creating a new file. */
if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
- if (!CreateDirectoryW(stream_path, secattr)) {
+ if (!CreateDirectoryW(stream_path, NULL)) {
err = GetLastError();
- if (err != ERROR_ALREADY_EXISTS) {
+ switch (err) {
+ case ERROR_ALREADY_EXISTS:
+ break;
+ case ERROR_ACCESS_DENIED:
+ if (path_is_root_of_drive(path))
+ break;
+ /* Fall through */
+ default:
ERROR("Failed to create directory \"%ls\"",
stream_path);
win32_error(err);
}
}
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("Opening \"%ls\"", stream_path);
h = CreateFileW(stream_path,
- GENERIC_WRITE,
+ GENERIC_READ | GENERIC_WRITE,
0,
- secattr,
+ 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);
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));
*/
static int
win32_extract_streams(const struct wim_inode *inode,
- const wchar_t *path, u64 *completed_bytes_p,
- const struct wim_security_data *security_data)
+ const wchar_t *path, u64 *completed_bytes_p)
{
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,
- security_data);
+ ret = win32_extract_stream(inode, path, NULL, unnamed_lte);
if (ret)
goto out;
if (unnamed_lte)
ret = win32_extract_stream(inode,
path,
ads_entry->stream_name,
- ads_entry->lte,
- NULL);
+ ads_entry->lte);
if (ret)
break;
if (ads_entry->lte)
/* Extract a file, directory, reparse point, or hard link to an
* already-extracted file using the Win32 API */
-int win32_do_apply_dentry(const wchar_t *output_path,
- size_t output_path_num_chars,
- struct wim_dentry *dentry,
- struct apply_args *args)
+int
+win32_do_apply_dentry(const wchar_t *output_path,
+ size_t output_path_num_chars,
+ struct wim_dentry *dentry,
+ struct apply_args *args)
{
int ret;
struct wim_inode *inode = dentry->d_inode;
* hard link. */
DEBUG("Creating hard link \"%ls => %ls\"",
output_path, inode->i_extracted_file);
- if (CreateHardLinkW(output_path, inode->i_extracted_file, NULL)) {
- ret = 0;
- } else {
+ if (!CreateHardLinkW(output_path, inode->i_extracted_file, NULL)) {
err = GetLastError();
ERROR("Can't create hard link \"%ls => %ls\"",
output_path, inode->i_extracted_file);
- ret = WIMLIB_ERR_LINK;
win32_error(err);
+ return WIMLIB_ERR_LINK;
}
} else {
/* Create the file, directory, or reparse point, and extract the
* data streams. */
- const struct wim_security_data *security_data;
- if (args->extract_flags & WIMLIB_EXTRACT_FLAG_NOACLS)
- security_data = NULL;
- else
- security_data = wim_const_security_data(args->w);
-
ret = win32_extract_streams(inode, output_path,
- &args->progress.extract.completed_bytes,
- security_data);
- if (ret == 0 && inode->i_nlink > 1) {
+ &args->progress.extract.completed_bytes);
+ 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.
* */
ret = WIMLIB_ERR_NOMEM;
}
}
- return ret;
+ return 0;
}
/* Set timestamps on an extracted file using the Win32 API */
{
DWORD err;
HANDLE h;
- int ret;
const struct wim_inode *inode = dentry->d_inode;
DEBUG("Opening \"%ls\" to set timestamps", path);
int
fsync(int fd)
{
- HANDLE h = (HANDLE)_get_osfhandle(fd);
+ DWORD err;
+ HANDLE h;
+
+ h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
ERROR("Could not get Windows handle for file descriptor");
- win32_error(GetLastError());
+ win32_error(err);
errno = EBADF;
return -1;
}
if (!FlushFileBuffers(h)) {
+ err = GetLastError();
ERROR("Could not flush file buffers to disk");
- win32_error(GetLastError());
+ win32_error(err);
errno = EIO;
return -1;
}
{
DWORD ret;
wimlib_assert(resolved_path == NULL);
+ DWORD err;
ret = GetFullPathNameW(path, 0, NULL, NULL);
- if (!ret)
+ if (!ret) {
+ err = GetLastError();
goto fail_win32;
+ }
resolved_path = TMALLOC(ret);
if (!resolved_path)
- goto fail;
+ goto out;
ret = GetFullPathNameW(path, ret, resolved_path, NULL);
if (!ret) {
+ err = GetLastError();
free(resolved_path);
+ resolved_path = NULL;
goto fail_win32;
}
- return resolved_path;
+ goto out;
fail_win32:
- win32_error(GetLastError());
-fail:
- return NULL;
-}
-
-char *
-nl_langinfo(nl_item item)
-{
- wimlib_assert(item == CODESET);
- static char buf[64];
- strcpy(buf, "Unknown");
- return buf;
+ win32_error(err);
+ errno = -1;
+out:
+ return resolved_path;
}
/* rename() on Windows fails if the destination file exists. And we need to
ERROR("MoveFileEx(): Can't rename \"%ls\" to \"%ls\"",
oldpath, newpath);
win32_error(err);
- errno = 0;
+ errno = -1;
return -1;
}
}
+/* Replacement for POSIX fnmatch() (partial functionality only) */
+int
+fnmatch(const wchar_t *pattern, const wchar_t *string, int flags)
+{
+ if (PathMatchSpecW(string, pattern))
+ return 0;
+ else
+ return FNM_NOMATCH;
+}
+
/* truncate() replacement */
int
win32_truncate_replacement(const wchar_t *path, off_t size)
fail:
if (err == NO_ERROR)
err = GetLastError();
- ERROR("Can't truncate %ls to %"PRIu64" bytes", path, size);
+ ERROR("Can't truncate \"%ls\" to %"PRIu64" bytes", path, size);
win32_error(err);
errno = -1;
return -1;
}
+
+
+/* This really could be replaced with _wcserror_s, but this doesn't seem to
+ * actually be available in MSVCRT.DLL on Windows XP (perhaps it's statically
+ * linked in by Visual Studio...?). */
+extern int
+win32_strerror_r_replacement(int errnum, wchar_t *buf, size_t buflen)
+{
+ static pthread_mutex_t strerror_lock = PTHREAD_MUTEX_INITIALIZER;
+
+ pthread_mutex_lock(&strerror_lock);
+ mbstowcs(buf, strerror(errnum), buflen);
+ buf[buflen - 1] = '\0';
+ pthread_mutex_unlock(&strerror_lock);
+ return 0;
+}
+
+#endif /* __WIN32__ */
git://wimlib.net / wimlib / blobdiff