*/
/*
- * Copyright (C) 2013 Eric Biggers
+ * Copyright (C) 2013, 2014 Eric Biggers
*
* This file is part of wimlib, a library for working with WIM files.
*
#include "wimlib/win32_common.h"
#include "wimlib/capture.h"
+#include "wimlib/dentry.h"
+#include "wimlib/encoding.h"
#include "wimlib/endianness.h"
#include "wimlib/error.h"
#include "wimlib/lookup_table.h"
#include "wimlib/paths.h"
#include "wimlib/reparse.h"
-#define MAX_GET_SD_ACCESS_DENIED_WARNINGS 1
-#define MAX_GET_SACL_PRIV_NOTHELD_WARNINGS 1
-#define MAX_CAPTURE_LONG_PATH_WARNINGS 5
+#include <errno.h>
struct win32_capture_state {
unsigned long num_get_sd_access_denied;
unsigned long num_long_path_warnings;
};
+static NTSTATUS
+winnt_openat(HANDLE cur_dir, const wchar_t *path, size_t path_nchars,
+ ACCESS_MASK perms, HANDLE *h_ret)
+{
+ UNICODE_STRING name;
+ OBJECT_ATTRIBUTES attr;
+ IO_STATUS_BLOCK iosb;
+ NTSTATUS status;
-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"
- ;
+ name.Length = path_nchars * sizeof(wchar_t);
+ name.MaximumLength = name.Length + sizeof(wchar_t);
+ name.Buffer = (wchar_t *)path;
+
+ attr.Length = sizeof(attr);
+ attr.RootDirectory = cur_dir;
+ attr.ObjectName = &name;
+ attr.Attributes = 0;
+ attr.SecurityDescriptor = NULL;
+ attr.SecurityQualityOfService = NULL;
+
+retry:
+ status = (*func_NtOpenFile)(h_ret, perms, &attr, &iosb,
+ FILE_SHARE_READ |
+ FILE_SHARE_WRITE |
+ FILE_SHARE_DELETE,
+ FILE_OPEN_REPARSE_POINT |
+ FILE_OPEN_FOR_BACKUP_INTENT |
+ FILE_SYNCHRONOUS_IO_NONALERT);
+ if (!NT_SUCCESS(status)) {
+ if (status == STATUS_ACCESS_DENIED ||
+ status == STATUS_PRIVILEGE_NOT_HELD) {
+ if (perms & ACCESS_SYSTEM_SECURITY) {
+ perms &= ~ACCESS_SYSTEM_SECURITY;
+ goto retry;
+ }
+ if (perms & READ_CONTROL) {
+ perms &= ~READ_CONTROL;
+ goto retry;
+ }
+ }
+ }
+ return status;
+}
int
read_win32_file_prefix(const struct wim_lookup_table_entry *lte,
consume_data_callback_t cb,
void *cb_ctx)
{
- int ret = 0;
- u64 bytes_remaining;
+ const wchar_t *path;
+ HANDLE h;
+ NTSTATUS status;
u8 buf[BUFFER_SIZE];
+ u64 bytes_remaining;
+ int ret;
- HANDLE hFile = win32_open_existing_file(lte->file_on_disk,
- FILE_READ_DATA);
- if (hFile == INVALID_HANDLE_VALUE) {
- set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("Failed to open \"%ls\"", lte->file_on_disk);
+ path = lte->file_on_disk;
+ status = winnt_openat(NULL, path, wcslen(path),
+ FILE_READ_DATA | SYNCHRONIZE, &h);
+ if (!NT_SUCCESS(status)) {
+ set_errno_from_nt_status(status);
+ ERROR_WITH_ERRNO("\"%ls\": Can't open for reading", path);
return WIMLIB_ERR_OPEN;
}
+ ret = 0;
bytes_remaining = size;
while (bytes_remaining) {
- DWORD bytesToRead, bytesRead;
+ IO_STATUS_BLOCK iosb;
+ ULONG count;
- bytesToRead = min(sizeof(buf), bytes_remaining);
- if (!ReadFile(hFile, buf, bytesToRead, &bytesRead, NULL) ||
- bytesRead != bytesToRead)
- {
- set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("Failed to read data from \"%ls\"",
- lte->file_on_disk);
+ count = min(sizeof(buf), bytes_remaining);
+
+ status = (*func_NtReadFile)(h, NULL, NULL, NULL,
+ &iosb, buf, count, NULL, NULL);
+ if (!NT_SUCCESS(status) || iosb.Information != count) {
+ set_errno_from_nt_status(status);
+ ERROR_WITH_ERRNO("\"%ls\": Error reading data", path);
ret = WIMLIB_ERR_READ;
break;
}
- bytes_remaining -= bytesRead;
- ret = (*cb)(buf, bytesRead, cb_ctx);
+
+ bytes_remaining -= count;
+ ret = (*cb)(buf, count, cb_ctx);
if (ret)
break;
}
-out_close_handle:
- CloseHandle(hFile);
+ (*func_NtClose)(h);
return ret;
}
int ret;
size_t bytes_to_consume = min(len, ctx->bytes_remaining);
+ if (bytes_to_consume == 0)
+ return ERROR_SUCCESS;
+
ret = (*ctx->read_prefix_cb)(data, bytes_to_consume, ctx->read_prefix_ctx);
if (ret) {
ctx->wimlib_err_code = ret;
void *file_ctx;
int ret;
- DEBUG("Reading %"PRIu64" bytes from encryted file \"%ls\"",
+ DEBUG("Reading %"PRIu64" bytes from encrypted file \"%ls\"",
size, lte->file_on_disk);
export_ctx.read_prefix_cb = cb;
* short names are essentially obsolete anyway.
*/
static int
-win32_get_short_name(HANDLE hFile, const wchar_t *path, struct wim_dentry *dentry)
+win32_get_short_name(HANDLE hFile, struct wim_dentry *dentry)
{
/* It's not any harder to just make the NtQueryInformationFile() system
* call ourselves, and it saves a dumb call to FindFirstFile() which of
* course has to create its own handle. */
-#ifdef WITH_NTDLL
- if (func_NtQueryInformationFile) {
- NTSTATUS status;
- IO_STATUS_BLOCK io_status;
- u8 buf[128] _aligned_attribute(8);
- const FILE_NAME_INFORMATION *info;
-
- status = (*func_NtQueryInformationFile)(hFile, &io_status, buf, sizeof(buf),
- FileAlternateNameInformation);
- info = (const FILE_NAME_INFORMATION*)buf;
- if (status == STATUS_SUCCESS && info->FileNameLength != 0) {
- dentry->short_name = MALLOC(info->FileNameLength + 2);
- if (!dentry->short_name)
- return WIMLIB_ERR_NOMEM;
- memcpy(dentry->short_name, info->FileName,
- info->FileNameLength);
- dentry->short_name[info->FileNameLength / 2] = L'\0';
- dentry->short_name_nbytes = info->FileNameLength;
- }
- return 0;
- }
-#endif
-
- WIN32_FIND_DATAW dat;
- HANDLE hFind;
- int ret = 0;
-
- hFind = FindFirstFile(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;
-}
-
-/*
- * win32_query_security_descriptor() - Query a file's security descriptor
- *
- * We need the file's security descriptor in SECURITY_DESCRIPTOR_RELATIVE
- * format, and we currently have a handle opened with as many relevant
- * permissions as possible. At this point, on Windows there are a number of
- * options for reading a file's security descriptor:
- *
- * GetFileSecurity(): This takes in a path and returns the
- * SECURITY_DESCRIPTOR_RELATIVE. Problem: this uses an internal handle, not
- * ours, and the handle created internally doesn't specify
- * FILE_FLAG_BACKUP_SEMANTICS. Therefore there can be access denied errors on
- * some files and directories, even when running as the Administrator.
- *
- * GetSecurityInfo(): This takes in a handle and returns the security
- * descriptor split into a bunch of different parts. This should work, but it's
- * dumb because we have to put the security descriptor back together again.
- *
- * BackupRead(): This can read the security descriptor, but this is a
- * difficult-to-use API, probably only works as the Administrator, and the
- * format of the returned data is not well documented.
- *
- * NtQuerySecurityObject(): This is exactly what we need, as it takes in a
- * handle and returns the security descriptor in SECURITY_DESCRIPTOR_RELATIVE
- * format. Only problem is that it's a ntdll function and therefore not
- * officially part of the Win32 API. Oh well.
- */
-static DWORD
-win32_query_security_descriptor(HANDLE hFile, const wchar_t *path,
- SECURITY_INFORMATION requestedInformation,
- SECURITY_DESCRIPTOR *buf,
- DWORD bufsize, DWORD *lengthNeeded)
-{
-#ifdef WITH_NTDLL
- if (func_NtQuerySecurityObject) {
- NTSTATUS status;
-
- status = (*func_NtQuerySecurityObject)(hFile,
- requestedInformation, buf,
- bufsize, lengthNeeded);
- /* Since it queries an already-open handle, NtQuerySecurityObject()
- * apparently returns STATUS_ACCESS_DENIED rather than
- * STATUS_PRIVILEGE_NOT_HELD. */
- if (status == STATUS_ACCESS_DENIED)
- return ERROR_PRIVILEGE_NOT_HELD;
- else
- return (*func_RtlNtStatusToDosError)(status);
+ NTSTATUS status;
+ IO_STATUS_BLOCK io_status;
+ u8 buf[128] _aligned_attribute(8);
+ const FILE_NAME_INFORMATION *info;
+
+ status = (*func_NtQueryInformationFile)(hFile, &io_status, buf, sizeof(buf),
+ FileAlternateNameInformation);
+ info = (const FILE_NAME_INFORMATION*)buf;
+ if (NT_SUCCESS(status) && info->FileNameLength != 0) {
+ dentry->short_name = utf16le_dupz(info->FileName,
+ info->FileNameLength);
+ if (!dentry->short_name)
+ return WIMLIB_ERR_NOMEM;
+ dentry->short_name_nbytes = info->FileNameLength;
}
-#endif
- if (GetFileSecurity(path, requestedInformation, buf,
- bufsize, lengthNeeded))
- return ERROR_SUCCESS;
- else
- return GetLastError();
+ return 0;
}
static int
-win32_get_security_descriptor(HANDLE hFile,
- const wchar_t *path,
+win32_get_security_descriptor(HANDLE h,
struct wim_inode *inode,
struct wim_sd_set *sd_set,
struct win32_capture_state *state,
u8 *buf;
size_t bufsize;
DWORD lenNeeded;
- DWORD err;
+ NTSTATUS status;
int ret;
requestedInformation = DACL_SECURITY_INFORMATION |
GROUP_SECURITY_INFORMATION;
buf = _buf;
bufsize = sizeof(_buf);
- for (;;) {
- err = win32_query_security_descriptor(hFile, path,
- requestedInformation,
- (SECURITY_DESCRIPTOR*)buf,
- bufsize, &lenNeeded);
- switch (err) {
- case ERROR_SUCCESS:
- goto have_descriptor;
- case ERROR_INSUFFICIENT_BUFFER:
+
+ /*
+ * We need the file's security descriptor in SECURITY_DESCRIPTOR_RELATIVE
+ * format, and we currently have a handle opened with as many relevant
+ * permissions as possible. At this point, on Windows there are a number of
+ * options for reading a file's security descriptor:
+ *
+ * GetFileSecurity(): This takes in a path and returns the
+ * SECURITY_DESCRIPTOR_RELATIVE. Problem: this uses an internal handle, not
+ * ours, and the handle created internally doesn't specify
+ * FILE_FLAG_BACKUP_SEMANTICS. Therefore there can be access denied errors on
+ * some files and directories, even when running as the Administrator.
+ *
+ * GetSecurityInfo(): This takes in a handle and returns the security
+ * descriptor split into a bunch of different parts. This should work, but it's
+ * dumb because we have to put the security descriptor back together again.
+ *
+ * BackupRead(): This can read the security descriptor, but this is a
+ * difficult-to-use API, probably only works as the Administrator, and the
+ * format of the returned data is not well documented.
+ *
+ * NtQuerySecurityObject(): This is exactly what we need, as it takes in a
+ * handle and returns the security descriptor in SECURITY_DESCRIPTOR_RELATIVE
+ * format. Only problem is that it's a ntdll function and therefore not
+ * officially part of the Win32 API. Oh well.
+ */
+ while (!(NT_SUCCESS(status = (*func_NtQuerySecurityObject)(h,
+ requestedInformation,
+ (PSECURITY_DESCRIPTOR)buf,
+ bufsize,
+ &lenNeeded))))
+ {
+ switch (status) {
+ case STATUS_BUFFER_OVERFLOW:
wimlib_assert(buf == _buf);
buf = MALLOC(lenNeeded);
if (!buf)
return WIMLIB_ERR_NOMEM;
bufsize = lenNeeded;
break;
- case ERROR_PRIVILEGE_NOT_HELD:
- if (add_flags & WIMLIB_ADD_FLAG_STRICT_ACLS)
- goto fail;
+ case STATUS_PRIVILEGE_NOT_HELD:
+ case STATUS_ACCESS_DENIED:
+ if (add_flags & WIMLIB_ADD_FLAG_STRICT_ACLS) {
+ default:
+ set_errno_from_nt_status(status);
+ ret = WIMLIB_ERR_READ;
+ goto out_free_buf;
+ }
if (requestedInformation & SACL_SECURITY_INFORMATION) {
state->num_get_sacl_priv_notheld++;
requestedInformation &= ~SACL_SECURITY_INFORMATION;
break;
}
- /* Fall through */
- case ERROR_ACCESS_DENIED:
- if (add_flags & WIMLIB_ADD_FLAG_STRICT_ACLS)
- goto fail;
state->num_get_sd_access_denied++;
ret = 0;
goto out_free_buf;
- default:
- fail:
- set_errno_from_win32_error(err);
- ERROR_WITH_ERRNO("Failed to read security descriptor of \"%ls\"", path);
- ret = WIMLIB_ERR_READ;
- goto out_free_buf;
}
}
-have_descriptor:
inode->i_security_id = sd_set_add_sd(sd_set, buf, lenNeeded);
if (inode->i_security_id < 0)
ret = WIMLIB_ERR_NOMEM;
static int
win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
- wchar_t *path,
- size_t path_num_chars,
+ HANDLE cur_dir,
+ wchar_t *full_path,
+ size_t full_path_nchars,
+ const wchar_t *filename,
+ size_t filename_nchars,
struct add_image_params *params,
struct win32_capture_state *state,
- unsigned vol_flags);
+ DWORD vol_flags);
/* Reads the directory entries of directory and recursively calls
* win32_build_dentry_tree() on them. */
static int
-win32_recurse_directory(HANDLE hDir,
- wchar_t *dir_path,
- size_t dir_path_num_chars,
+win32_recurse_directory(HANDLE h,
+ wchar_t *full_path,
+ size_t full_path_nchars,
struct wim_dentry *root,
struct add_image_params *params,
struct win32_capture_state *state,
- unsigned vol_flags)
+ DWORD vol_flags)
{
int ret;
- DEBUG("Recurse to directory \"%ls\"", dir_path);
-
/* Using NtQueryDirectoryFile() we can re-use the same open handle,
- * which we opened with FILE_FLAG_BACKUP_SEMANTICS (probably not the
- * case for the FindFirstFile() API; it's not documented). */
-#ifdef WITH_NTDLL
- if (!func_NtQueryDirectoryFile)
- goto use_FindFirstFile;
+ * which we opened with FILE_FLAG_BACKUP_SEMANTICS. */
NTSTATUS status;
IO_STATUS_BLOCK io_status;
const size_t bufsize = 8192;
- u8 *buf;
- BOOL restartScan = TRUE;
- const FILE_NAMES_INFORMATION *info;
+ void *buf;
buf = MALLOC(bufsize);
if (!buf)
return WIMLIB_ERR_NOMEM;
- for (;;) {
- status = (*func_NtQueryDirectoryFile)(hDir, NULL, NULL, NULL,
- &io_status, buf, bufsize,
- FileNamesInformation,
- FALSE, NULL, restartScan);
- restartScan = FALSE;
- if (status != STATUS_SUCCESS) {
- if (status == STATUS_NO_MORE_FILES ||
- status == STATUS_NO_MORE_ENTRIES ||
- status == STATUS_NO_MORE_MATCHES) {
- ret = 0;
- } else if (status == STATUS_NOT_IMPLEMENTED ||
- status == STATUS_NOT_SUPPORTED ||
- status == STATUS_INVALID_INFO_CLASS) {
- FREE(buf);
- goto use_FindFirstFile;
- } else {
- set_errno_from_nt_status(status);
- ERROR_WITH_ERRNO("Failed to read directory "
- "\"%ls\"", dir_path);
- ret = WIMLIB_ERR_READ;
- }
- goto out_free_buf;
- }
- wimlib_assert(io_status.Information != 0);
- info = (const FILE_NAMES_INFORMATION*)buf;
+
+ while (NT_SUCCESS(status = (*func_NtQueryDirectoryFile)(h, NULL, NULL, NULL,
+ &io_status, buf, bufsize,
+ FileNamesInformation,
+ FALSE, NULL, FALSE)))
+ {
+ const FILE_NAMES_INFORMATION *info = buf;
for (;;) {
if (!(info->FileNameLength == 2 && info->FileName[0] == L'.') &&
!(info->FileNameLength == 4 && info->FileName[0] == L'.' &&
wchar_t *p;
struct wim_dentry *child;
- p = dir_path + dir_path_num_chars;
+ p = full_path + full_path_nchars;
*p++ = L'\\';
p = wmempcpy(p, info->FileName,
info->FileNameLength / 2);
ret = win32_build_dentry_tree_recursive(
&child,
- dir_path,
- p - dir_path,
+ h,
+ full_path,
+ p - full_path,
+ full_path + full_path_nchars + 1,
+ info->FileNameLength / 2,
params,
state,
vol_flags);
- dir_path[dir_path_num_chars] = L'\0';
+ full_path[full_path_nchars] = L'\0';
if (ret)
goto out_free_buf;
}
if (info->NextEntryOffset == 0)
break;
- info = (const FILE_NAMES_INFORMATION*)
- ((const u8*)info + info->NextEntryOffset);
+ info = (const FILE_NAMES_INFORMATION *)
+ ((const u8 *)info + info->NextEntryOffset);
}
}
-out_free_buf:
- FREE(buf);
- return ret;
-#endif
-use_FindFirstFile:
- ;
- WIN32_FIND_DATAW dat;
- HANDLE hFind;
- DWORD err;
-
- /* 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] = OS_PREFERRED_PATH_SEPARATOR;
- dir_path[dir_path_num_chars + 1] = L'*';
- dir_path[dir_path_num_chars + 2] = L'\0';
- hFind = FindFirstFile(dir_path, &dat);
- dir_path[dir_path_num_chars] = L'\0';
-
- if (hFind == INVALID_HANDLE_VALUE) {
- err = GetLastError();
- if (err == ERROR_FILE_NOT_FOUND) {
- return 0;
- } else {
- set_errno_from_win32_error(err);
- ERROR_WITH_ERRNO("Failed to read directory \"%ls\"",
- dir_path);
- return WIMLIB_ERR_READ;
- }
- }
- ret = 0;
- do {
- /* Skip . and .. entries */
- 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] = OS_PREFERRED_PATH_SEPARATOR;
- 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,
- params,
- state,
- vol_flags);
- dir_path[dir_path_num_chars] = L'\0';
- if (ret)
- goto out_find_close;
- if (child)
- dentry_add_child(root, child);
- } while (FindNextFile(hFind, &dat));
- err = GetLastError();
- if (err != ERROR_NO_MORE_FILES) {
- set_errno_from_win32_error(err);
- ERROR_WITH_ERRNO("Failed to read directory \"%ls\"", dir_path);
- if (ret == 0)
- ret = WIMLIB_ERR_READ;
+ if (status != STATUS_NO_MORE_FILES) {
+ set_errno_from_nt_status(status);
+ ERROR_WITH_ERRNO("\"%ls\": Can't read directory", full_path);
+ ret = WIMLIB_ERR_READ;
}
-out_find_close:
- FindClose(hFind);
+out_free_buf:
+ FREE(buf);
return ret;
}
static int
win32_capture_try_rpfix(u8 *rpbuf, u16 *rpbuflen_p,
u64 capture_root_ino, u64 capture_root_dev,
- const wchar_t *path)
+ const wchar_t *path, struct add_image_params *params)
{
struct reparse_data rpdata;
int ret;
ret = -ret;
} else {
if (rp_status == RP_EXCLUDED) {
+ /* Ignoring absolute symbolic link or junction point
+ * that points out of the tree to be captured. */
size_t print_name_nchars = rpdata.print_name_nbytes / 2;
wchar_t print_name0[print_name_nchars + 1];
print_name0[print_name_nchars] = L'\0';
wmemcpy(print_name0, rpdata.print_name, print_name_nchars);
- WARNING("Ignoring %ls pointing out of capture directory:\n"
- " \"%ls\" -> \"%ls\"\n"
- " (Use --norpfix to capture all symbolic links "
- "and junction points as-is)",
- (rpdata.rptag == WIM_IO_REPARSE_TAG_SYMLINK) ?
- L"absolute symbolic link" : L"junction point",
- path, print_name0);
+
+ params->progress.scan.cur_path = path;
+ params->progress.scan.symlink_target = print_name0;
+ do_capture_progress(params,
+ WIMLIB_SCAN_DENTRY_EXCLUDED_SYMLINK,
+ NULL);
}
ret = rp_status;
}
* fixing the targets of absolute symbolic links and junction points to be
* relative to the root of capture.
*
- * @hFile: Open handle to the reparse point.
- * @path: Path to the reparse point. Used for error messages only.
+ * @h: Open handle to the reparse point.
+ * @path: Path to the reparse point file.
* @params: Additional parameters, including whether to do reparse point fixups
* or not.
* @rpbuf: Buffer of length at least REPARSE_POINT_MAX_SIZE bytes into which
* code.
*/
static int
-win32_get_reparse_data(HANDLE hFile, const wchar_t *path,
+win32_get_reparse_data(HANDLE h, const wchar_t *path,
struct add_image_params *params,
u8 *rpbuf, u16 *rpbuflen_ret)
{
int ret;
u16 rpbuflen;
- DEBUG("Loading reparse data from \"%ls\"", path);
- if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
+ if (!DeviceIoControl(h, FSCTL_GET_REPARSE_POINT,
NULL, /* "Not used with this operation; set to NULL" */
0, /* "Not used with this operation; set to 0" */
rpbuf, /* "A pointer to a buffer that
NULL))
{
set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("Failed to get reparse data of \"%ls\"", path);
return -WIMLIB_ERR_READ;
}
+
if (bytesReturned < 8 || bytesReturned > REPARSE_POINT_MAX_SIZE) {
- ERROR("Reparse data on \"%ls\" is invalid", path);
+ errno = EINVAL;
return -WIMLIB_ERR_INVALID_REPARSE_DATA;
}
&rpbuflen,
params->capture_root_ino,
params->capture_root_dev,
- path);
+ path,
+ params);
} else {
ret = RP_NOT_FIXED;
}
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
- * wim_lookup_table_entry' for an identical stream.
- *
- * @path: Path to the file (UTF-16LE).
- *
- * @path_num_chars: Number of 2-byte characters in @path.
- *
- * @inode: WIM inode to save the stream into.
- *
- * @lookup_table: Stream lookup table for the WIM.
- *
- * @dat: A `WIN32_FIND_STREAM_DATA' structure that specifies the
- * stream name.
- *
- * Returns 0 on success; nonzero on failure.
- */
+static bool
+get_data_stream_name(const wchar_t *raw_stream_name, size_t raw_stream_name_nchars,
+ const wchar_t **stream_name_ret, size_t *stream_name_nchars_ret)
+{
+ const wchar_t *sep, *type, *end;
+
+ /* The stream name should be returned as :NAME:TYPE */
+ if (raw_stream_name_nchars < 1)
+ return false;
+ if (raw_stream_name[0] != L':')
+ return false;
+
+ raw_stream_name++;
+ raw_stream_name_nchars--;
+
+ end = raw_stream_name + raw_stream_name_nchars;
+
+ sep = wmemchr(raw_stream_name, L':', raw_stream_name_nchars);
+ if (!sep)
+ return false;
+
+ type = sep + 1;
+ if (end - type != 5)
+ return false;
+
+ if (wmemcmp(type, L"$DATA", 5))
+ return false;
+
+ *stream_name_ret = raw_stream_name;
+ *stream_name_nchars_ret = sep - raw_stream_name;
+ return true;
+}
+
+static wchar_t *
+build_stream_path(const wchar_t *path, size_t path_nchars,
+ const wchar_t *stream_name, size_t stream_name_nchars)
+{
+ size_t stream_path_nchars;
+ wchar_t *stream_path;
+ wchar_t *p;
+
+ stream_path_nchars = path_nchars;
+ if (stream_name_nchars)
+ stream_path_nchars += 1 + stream_name_nchars;
+
+ stream_path = MALLOC((stream_path_nchars + 1) * sizeof(wchar_t));
+ if (stream_path) {
+ p = wmempcpy(stream_path, path, path_nchars);
+ if (stream_name_nchars) {
+ *p++ = L':';
+ p = wmempcpy(p, stream_name, stream_name_nchars);
+ }
+ *p++ = L'\0';
+ }
+ return stream_path;
+}
+
static int
-win32_capture_stream(const wchar_t *path,
- size_t path_num_chars,
+win32_capture_stream(const wchar_t *path, size_t path_nchars,
+ const wchar_t *raw_stream_name, size_t raw_stream_name_nchars,
+ u64 stream_size,
struct wim_inode *inode,
- struct wim_lookup_table *lookup_table,
- WIN32_FIND_STREAM_DATA *dat)
+ struct list_head *unhashed_streams)
{
+ const wchar_t *stream_name;
+ size_t stream_name_nchars;
struct wim_ads_entry *ads_entry;
+ wchar_t *stream_path;
struct wim_lookup_table_entry *lte;
- int ret;
- wchar_t *stream_name, *colon;
- size_t stream_name_nchars;
- bool is_named_stream;
- wchar_t *spath;
- size_t spath_nchars;
- size_t spath_buf_nbytes;
- const wchar_t *relpath_prefix;
- const wchar_t *colonchar;
-
- DEBUG("Capture \"%ls\" stream \"%ls\"", path, dat->cStreamName);
-
- /* The stream name should be returned as :NAME:TYPE */
- stream_name = dat->cStreamName;
- if (*stream_name != L':')
- goto out_invalid_stream_name;
- stream_name += 1;
- colon = wcschr(stream_name, L':');
- if (colon == NULL)
- goto out_invalid_stream_name;
-
- if (wcscmp(colon + 1, L"$DATA")) {
- /* Not a DATA stream */
- ret = 0;
- goto out;
- }
-
- *colon = '\0';
+ u32 stream_id;
- stream_name_nchars = colon - stream_name;
- is_named_stream = (stream_name_nchars != 0);
+ /* Given the raw stream name (which is something like
+ * L":streamname:$DATA", extract just the stream name part. */
+ if (!get_data_stream_name(raw_stream_name, raw_stream_name_nchars,
+ &stream_name, &stream_name_nchars))
+ return 0;
- if (is_named_stream) {
- /* Allocate an ADS entry for the named stream. */
+ /* If this is a named stream, allocate an ADS entry. */
+ if (stream_name_nchars) {
ads_entry = inode_add_ads_utf16le(inode, stream_name,
stream_name_nchars * sizeof(wchar_t));
- if (!ads_entry) {
- ret = WIMLIB_ERR_NOMEM;
- goto out;
- }
- }
-
- /* 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
- * wim_lookup_table_entry if needed.
- *
- * As yet another special case, relative paths need to be changed to
- * begin with an explicit "./" so that, for example, a file t:ads, where
- * :ads is the part we added, is not interpreted as a file on the t:
- * drive. */
- spath_nchars = path_num_chars;
- relpath_prefix = L"";
- colonchar = L"";
- if (is_named_stream) {
- spath_nchars += 1 + stream_name_nchars;
- colonchar = L":";
- if (path_num_chars == 1 && !is_any_path_separator(path[0])) {
- spath_nchars += 2;
- static const wchar_t _relpath_prefix[] =
- {L'.', OS_PREFERRED_PATH_SEPARATOR, L'\0'};
- relpath_prefix = _relpath_prefix;
- }
+ if (!ads_entry)
+ return WIMLIB_ERR_NOMEM;
+ } else {
+ ads_entry = NULL;
}
- spath_buf_nbytes = (spath_nchars + 1) * sizeof(wchar_t);
- spath = MALLOC(spath_buf_nbytes);
+ /* If the stream is empty, no lookup table entry is needed. */
+ if (stream_size == 0)
+ return 0;
- tsprintf(spath, L"%ls%ls%ls%ls",
- relpath_prefix, path, colonchar, stream_name);
+ /* Build the path to the stream. For unnamed streams, this is simply
+ * the path to the file. For named streams, this is the path to the
+ * file, followed by a colon, followed by the stream name. */
+ stream_path = build_stream_path(path, path_nchars,
+ stream_name, stream_name_nchars);
+ if (!stream_path)
+ return WIMLIB_ERR_NOMEM;
- /* Make a new wim_lookup_table_entry */
+ /* Set up the lookup table entry for the stream. */
lte = new_lookup_table_entry();
if (!lte) {
- ret = WIMLIB_ERR_NOMEM;
- goto out_free_spath;
+ FREE(stream_path);
+ return WIMLIB_ERR_NOMEM;
}
- lte->file_on_disk = spath;
- spath = NULL;
- if (inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED && !is_named_stream) {
+ lte->file_on_disk = stream_path;
+ lte->resource_location = RESOURCE_IN_FILE_ON_DISK;
+ lte->size = stream_size;
+ if ((inode->i_attributes & FILE_ATTRIBUTE_ENCRYPTED) && !ads_entry) {
+ /* Special case for encrypted file. */
+
+ /* OpenEncryptedFileRaw() expects Win32 name, not NT name. */
+ lte->file_on_disk[1] = L'\\';
+ wimlib_assert(!wmemcmp(lte->file_on_disk, L"\\\\?\\", 4));
+
u64 encrypted_size;
- lte->resource_location = RESOURCE_WIN32_ENCRYPTED;
- ret = win32_get_encrypted_file_size(path, &encrypted_size);
- if (ret)
- goto out_free_spath;
+ int ret;
+
+ ret = win32_get_encrypted_file_size(lte->file_on_disk,
+ &encrypted_size);
+ if (ret) {
+ free_lookup_table_entry(lte);
+ return ret;
+ }
lte->size = encrypted_size;
- } else {
- lte->resource_location = RESOURCE_IN_FILE_ON_DISK;
- lte->size = (u64)dat->StreamSize.QuadPart;
+ lte->resource_location = RESOURCE_WIN32_ENCRYPTED;
}
- u32 stream_id;
- if (is_named_stream) {
+ if (ads_entry) {
stream_id = ads_entry->stream_id;
ads_entry->lte = lte;
} 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:
- return ret;
-out_invalid_stream_name:
- ERROR("Invalid stream name: \"%ls:%ls\"", path, dat->cStreamName);
- ret = WIMLIB_ERR_READ;
- goto out;
+ add_unhashed_stream(lte, inode, stream_id, unhashed_streams);
+ return 0;
}
/* Load information about the streams of an open file into a WIM inode.
*
- * By default, we use the NtQueryInformationFile() system call instead of
- * FindFirstStream() and FindNextStream(). This is done for two reasons:
+ * We use the NtQueryInformationFile() system call instead of FindFirstStream()
+ * and FindNextStream(). This is done for two reasons:
*
* - FindFirstStream() opens its own handle to the file or directory and
* apparently does so without specifying FILE_FLAG_BACKUP_SEMANTICS, thereby
static int
win32_capture_streams(HANDLE *hFile_p,
const wchar_t *path,
- size_t path_num_chars,
+ size_t path_nchars,
struct wim_inode *inode,
- struct wim_lookup_table *lookup_table,
+ struct list_head *unhashed_streams,
u64 file_size,
- unsigned vol_flags)
+ DWORD vol_flags)
{
- WIN32_FIND_STREAM_DATA dat;
int ret;
-#ifdef WITH_NTDLL
u8 _buf[8192] _aligned_attribute(8);
u8 *buf;
size_t bufsize;
IO_STATUS_BLOCK io_status;
NTSTATUS status;
const FILE_STREAM_INFORMATION *info;
-#endif
- HANDLE hFind;
- DWORD err;
DEBUG("Capturing streams from \"%ls\"", path);
- if (!(vol_flags & FILE_NAMED_STREAMS))
- goto unnamed_only;
-
-#ifdef WITH_NTDLL
- if (!func_NtQueryInformationFile)
- goto use_FindFirstStream;
-
buf = _buf;
bufsize = sizeof(_buf);
- /* Get a buffer containing the stream information. */
- for (;;) {
- status = (*func_NtQueryInformationFile)(*hFile_p, &io_status,
- buf, bufsize,
- FileStreamInformation);
- if (status == STATUS_SUCCESS) {
- break;
- } else if (status == STATUS_BUFFER_OVERFLOW) {
- u8 *newbuf;
+ if (!(vol_flags & FILE_NAMED_STREAMS))
+ goto unnamed_only;
- bufsize *= 2;
- if (buf == _buf)
- newbuf = MALLOC(bufsize);
- else
- newbuf = REALLOC(buf, bufsize);
+ /* Get a buffer containing the stream information. */
+ while (!NT_SUCCESS(status = (*func_NtQueryInformationFile)(*hFile_p,
+ &io_status,
+ buf,
+ bufsize,
+ FileStreamInformation)))
+ {
- if (!newbuf) {
- ret = WIMLIB_ERR_NOMEM;
- goto out_free_buf;
+ switch (status) {
+ case STATUS_BUFFER_OVERFLOW:
+ {
+ u8 *newbuf;
+
+ bufsize *= 2;
+ if (buf == _buf)
+ newbuf = MALLOC(bufsize);
+ else
+ newbuf = REALLOC(buf, bufsize);
+ if (!newbuf) {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out_free_buf;
+ }
+ buf = newbuf;
}
- buf = newbuf;
- } else if (status == STATUS_NOT_IMPLEMENTED ||
- status == STATUS_NOT_SUPPORTED ||
- status == STATUS_INVALID_INFO_CLASS) {
- goto use_FindFirstStream;
- } else {
+ break;
+ case STATUS_NOT_IMPLEMENTED:
+ case STATUS_NOT_SUPPORTED:
+ case STATUS_INVALID_INFO_CLASS:
+ goto unnamed_only;
+ default:
set_errno_from_nt_status(status);
- ERROR_WITH_ERRNO("Failed to read streams of %ls", path);
+ ERROR_WITH_ERRNO("\"%ls\": Failed to query "
+ "stream information", path);
ret = WIMLIB_ERR_READ;
goto out_free_buf;
}
/* OpenEncryptedFileRaw() seems to fail with
* ERROR_SHARING_VIOLATION if there are any handles opened to
* the file. */
- CloseHandle(*hFile_p);
+ (*func_NtClose)(*hFile_p);
*hFile_p = INVALID_HANDLE_VALUE;
}
/* Parse one or more stream information structures. */
- info = (const FILE_STREAM_INFORMATION*)buf;
+ info = (const FILE_STREAM_INFORMATION *)buf;
for (;;) {
- if (info->StreamNameLength <= sizeof(dat.cStreamName) - 2) {
- dat.StreamSize = info->StreamSize;
- memcpy(dat.cStreamName, info->StreamName, info->StreamNameLength);
- dat.cStreamName[info->StreamNameLength / 2] = L'\0';
-
- /* Capture the stream. */
- ret = win32_capture_stream(path, path_num_chars, inode,
- lookup_table, &dat);
- if (ret)
- goto out_free_buf;
- }
+ /* Capture the stream. */
+ ret = win32_capture_stream(path, path_nchars,
+ info->StreamName,
+ info->StreamNameLength / 2,
+ info->StreamSize.QuadPart,
+ inode, unhashed_streams);
+ if (ret)
+ goto out_free_buf;
+
if (info->NextEntryOffset == 0) {
/* No more stream information. */
- ret = 0;
break;
}
/* Advance to next stream information. */
- info = (const FILE_STREAM_INFORMATION*)
- ((const u8*)info + info->NextEntryOffset);
- }
-out_free_buf:
- /* Free buffer if allocated on heap. */
- if (buf != _buf)
- FREE(buf);
- return ret;
-#endif /* WITH_NTDLL */
-
-use_FindFirstStream:
- if (win32func_FindFirstStreamW == NULL)
- goto unnamed_only;
- hFind = win32func_FindFirstStreamW(path, FindStreamInfoStandard, &dat, 0);
- if (hFind == INVALID_HANDLE_VALUE) {
- err = GetLastError();
- if (err == ERROR_CALL_NOT_IMPLEMENTED ||
- err == ERROR_NOT_SUPPORTED ||
- err == ERROR_INVALID_FUNCTION ||
- err == ERROR_INVALID_PARAMETER)
- goto unnamed_only;
-
- /* Seems legal for this to return ERROR_HANDLE_EOF on reparse
- * points and directories */
- if ((inode->i_attributes &
- (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
- && err == ERROR_HANDLE_EOF)
- {
- DEBUG("ERROR_HANDLE_EOF (ok)");
- return 0;
- } else {
- if (err == ERROR_ACCESS_DENIED) {
- WARNING("Failed to look up data streams "
- "of \"%ls\": Access denied!\n%ls",
- path, capture_access_denied_msg);
- return 0;
- } else {
- set_errno_from_win32_error(err);
- ERROR_WITH_ERRNO("Failed to look up data streams "
- "of \"%ls\"", path);
- return WIMLIB_ERR_READ;
- }
- }
+ info = (const FILE_STREAM_INFORMATION *)
+ ((const u8 *)info + info->NextEntryOffset);
}
- do {
- ret = win32_capture_stream(path,
- path_num_chars,
- inode, lookup_table,
- &dat);
- if (ret)
- goto out_find_close;
- } while (win32func_FindNextStreamW(hFind, &dat));
- err = GetLastError();
- if (err != ERROR_HANDLE_EOF) {
- set_errno_from_win32_error(err);
- ERROR_WITH_ERRNO("Error reading data streams from "
- "\"%ls\"", path);
- ret = WIMLIB_ERR_READ;
- }
-out_find_close:
- FindClose(hFind);
- return ret;
+ ret = 0;
+ goto out_free_buf;
unnamed_only:
- /* FindFirstStream() API is not available, or the volume does not
- * support named streams. Only capture the unnamed data stream. */
+ /* 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_DIRECTORY |
FILE_ATTRIBUTE_REPARSE_POINT))
- return 0;
+ {
+ ret = 0;
+ goto out_free_buf;
+ }
- wcscpy(dat.cStreamName, L"::$DATA");
- dat.StreamSize.QuadPart = file_size;
- return win32_capture_stream(path, path_num_chars,
- inode, lookup_table, &dat);
+ ret = win32_capture_stream(path, path_nchars,
+ L"::$DATA", 7, file_size,
+ inode, unhashed_streams);
+out_free_buf:
+ /* Free buffer if allocated on heap. */
+ if (buf != _buf)
+ FREE(buf);
+ return ret;
}
static int
win32_build_dentry_tree_recursive(struct wim_dentry **root_ret,
- wchar_t *path,
- size_t path_num_chars,
+ HANDLE cur_dir,
+ wchar_t *full_path,
+ size_t full_path_nchars,
+ const wchar_t *filename,
+ size_t filename_nchars,
struct add_image_params *params,
struct win32_capture_state *state,
- unsigned vol_flags)
+ DWORD vol_flags)
{
struct wim_dentry *root = NULL;
- struct wim_inode *inode;
- DWORD err;
- u64 file_size;
+ struct wim_inode *inode = NULL;
+ HANDLE h = INVALID_HANDLE_VALUE;
int ret;
+ NTSTATUS status;
+ BY_HANDLE_FILE_INFORMATION file_info;
u8 *rpbuf;
u16 rpbuflen;
u16 not_rpfixed;
- HANDLE hFile = INVALID_HANDLE_VALUE;
- DWORD desiredAccess;
-
- if (exclude_path(path, path_num_chars, params->config, true)) {
- if (params->add_flags & WIMLIB_ADD_FLAG_ROOT) {
- ERROR("Cannot exclude the root directory from capture");
- ret = WIMLIB_ERR_INVALID_CAPTURE_CONFIG;
- goto out;
- }
+ if (should_exclude_path(full_path + params->capture_root_nchars,
+ full_path_nchars - params->capture_root_nchars,
+ params->config))
+ {
ret = 0;
goto out_progress;
}
-#if 0
- if (path_num_chars >= 4 &&
- !wmemcmp(path, L"\\\\?\\", 4) &&
- path_num_chars + 1 - 4 > MAX_PATH &&
- state->num_long_path_warnings < MAX_CAPTURE_LONG_PATH_WARNINGS)
- {
- WARNING("Path \"%ls\" exceeds MAX_PATH", path);
- if (++state->num_long_path_warnings == MAX_CAPTURE_LONG_PATH_WARNINGS)
- WARNING("Suppressing further warnings about long paths.");
- }
-#endif
-
- desiredAccess = FILE_READ_DATA | FILE_READ_ATTRIBUTES |
- READ_CONTROL | ACCESS_SYSTEM_SECURITY;
-again:
- hFile = win32_open_existing_file(path, desiredAccess);
- if (hFile == INVALID_HANDLE_VALUE) {
- err = GetLastError();
- if (err == ERROR_ACCESS_DENIED || err == ERROR_PRIVILEGE_NOT_HELD) {
- if (desiredAccess & ACCESS_SYSTEM_SECURITY) {
- desiredAccess &= ~ACCESS_SYSTEM_SECURITY;
- goto again;
- }
- if (desiredAccess & READ_CONTROL) {
- desiredAccess &= ~READ_CONTROL;
- goto again;
- }
- }
- set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("Failed to open \"%ls\" for reading", path);
+ status = winnt_openat(cur_dir,
+ (cur_dir ? filename : full_path),
+ (cur_dir ? filename_nchars : full_path_nchars),
+ FILE_READ_DATA |
+ FILE_READ_ATTRIBUTES |
+ READ_CONTROL |
+ ACCESS_SYSTEM_SECURITY |
+ SYNCHRONIZE,
+ &h);
+ if (!NT_SUCCESS(status)) {
+ set_errno_from_nt_status(status);
+ ERROR_WITH_ERRNO("\"%ls\": Can't open file", full_path);
ret = WIMLIB_ERR_OPEN;
goto out;
}
- BY_HANDLE_FILE_INFORMATION file_info;
- if (!GetFileInformationByHandle(hFile, &file_info)) {
+ if (!GetFileInformationByHandle(h, &file_info)) {
set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("Failed to get file information for \"%ls\"",
- path);
+ ERROR_WITH_ERRNO("\"%ls\": Can't get file information", full_path);
ret = WIMLIB_ERR_STAT;
goto out;
}
+ if (!cur_dir) {
+ /* Root directory; get volume information. */
+ FILE_FS_ATTRIBUTE_INFORMATION info;
+ IO_STATUS_BLOCK iosb;
+
+ params->capture_root_ino =
+ ((u64)file_info.nFileIndexHigh << 32) |
+ file_info.nFileIndexLow;
+ params->capture_root_dev = file_info.dwVolumeSerialNumber;
+
+ status = (*func_NtQueryVolumeInformationFile)(h, &iosb,
+ &info, sizeof(info),
+ FileFsAttributeInformation);
+ if ((NT_SUCCESS(status) || (status == STATUS_BUFFER_OVERFLOW)) &&
+ iosb.Information >= sizeof(FILE_FS_ATTRIBUTE_INFORMATION))
+ {
+ vol_flags = info.FileSystemAttributes;
+ } else {
+ set_errno_from_nt_status(status);
+ WARNING_WITH_ERRNO("\"%ls\": Can't get volume information",
+ full_path);
+ vol_flags = 0;
+ }
+ }
+
if (file_info.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
rpbuf = alloca(REPARSE_POINT_MAX_SIZE);
- ret = win32_get_reparse_data(hFile, path, params,
- rpbuf, &rpbuflen);
+ ret = win32_get_reparse_data(h, full_path,
+ params, rpbuf, &rpbuflen);
if (ret < 0) {
/* WIMLIB_ERR_* (inverted) */
ret = -ret;
+ ERROR_WITH_ERRNO("\"%ls\": Can't get reparse data",
+ full_path);
goto out;
} else if (ret & RP_FIXED) {
not_rpfixed = 0;
} else if (ret == RP_EXCLUDED) {
ret = 0;
- goto out_progress;
+ goto out;
} else {
not_rpfixed = 1;
}
* 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. */
- ret = inode_table_new_dentry(¶ms->inode_table,
- path_basename_with_len(path, path_num_chars),
+ ret = inode_table_new_dentry(params->inode_table,
+ filename,
((u64)file_info.nFileIndexHigh << 32) |
(u64)file_info.nFileIndexLow,
file_info.dwVolumeSerialNumber,
if (ret)
goto out;
- ret = win32_get_short_name(hFile, path, root);
- if (ret)
+ ret = win32_get_short_name(h, root);
+ if (ret) {
+ ERROR_WITH_ERRNO("\"%ls\": Can't get short name", full_path);
goto out;
+ }
inode = root->d_inode;
if (inode->i_nlink > 1) {
/* Shared inode; nothing more to do */
+ ret = 0;
goto out_progress;
}
if (!(params->add_flags & WIMLIB_ADD_FLAG_NO_ACLS)
&& (vol_flags & FILE_PERSISTENT_ACLS))
{
- ret = win32_get_security_descriptor(hFile, path, inode,
- ¶ms->sd_set, state,
+ ret = win32_get_security_descriptor(h, inode,
+ params->sd_set, state,
params->add_flags);
- if (ret)
+ if (ret) {
+ ERROR_WITH_ERRNO("\"%ls\": Can't "
+ "read security descriptor", full_path);
goto out;
+ }
}
- file_size = ((u64)file_info.nFileSizeHigh << 32) |
- (u64)file_info.nFileSizeLow;
-
-
/* Capture the unnamed data stream (only should be present for regular
* files) and any alternate data streams. */
- ret = win32_capture_streams(&hFile,
- path,
- path_num_chars,
+ ret = win32_capture_streams(&h,
+ full_path,
+ full_path_nchars,
inode,
- params->lookup_table,
- file_size,
+ params->unhashed_streams,
+ ((u64)file_info.nFileSizeHigh << 32) |
+ file_info.nFileSizeLow,
vol_flags);
if (ret)
goto out;
} else if (inode->i_attributes & FILE_ATTRIBUTE_DIRECTORY) {
/* Directory (not a reparse point) --- recurse to children */
- if (hFile == INVALID_HANDLE_VALUE) {
+ if (h == INVALID_HANDLE_VALUE) {
/* Re-open handle that was closed to read raw encrypted
* data. */
- hFile = win32_open_existing_file(path, FILE_READ_DATA);
- if (hFile == INVALID_HANDLE_VALUE) {
- set_errno_from_GetLastError();
- ERROR_WITH_ERRNO("Failed to reopen \"%ls\"",
- path);
+ status = winnt_openat(cur_dir,
+ (cur_dir ?
+ filename : full_path),
+ (cur_dir ?
+ filename_nchars : full_path_nchars),
+ FILE_LIST_DIRECTORY | SYNCHRONIZE,
+ &h);
+ if (!NT_SUCCESS(status)) {
+ set_errno_from_nt_status(status);
+ ERROR_WITH_ERRNO("\"%ls\": Can't open file",
+ full_path);
ret = WIMLIB_ERR_OPEN;
goto out;
}
}
- ret = win32_recurse_directory(hFile,
- path,
- path_num_chars,
+ ret = win32_recurse_directory(h,
+ full_path,
+ full_path_nchars,
root,
params,
state,
if (ret)
goto out;
- path[path_num_chars] = '\0';
out_progress:
- params->progress.scan.cur_path = path;
- if (root == NULL)
- do_capture_progress(params, WIMLIB_SCAN_DENTRY_EXCLUDED, NULL);
- else
+ params->progress.scan.cur_path = full_path;
+ if (root)
do_capture_progress(params, WIMLIB_SCAN_DENTRY_OK, inode);
+ else
+ do_capture_progress(params, WIMLIB_SCAN_DENTRY_EXCLUDED, NULL);
out:
- if (hFile != INVALID_HANDLE_VALUE)
- CloseHandle(hFile);
+ if (h != INVALID_HANDLE_VALUE)
+ (*func_NtClose)(h);
if (ret == 0)
*root_ret = root;
else
const wchar_t *root_disk_path,
struct add_image_params *params)
{
- size_t path_nchars;
wchar_t *path;
+ DWORD dret;
+ size_t path_nchars;
int ret;
struct win32_capture_state state;
- unsigned vol_flags;
- DWORD dret;
- bool need_prefix_free = false;
-
- if (!win32func_FindFirstStreamW
-#ifdef WITH_NTDLL
- && !func_NtQueryInformationFile
-#endif
- )
- {
- WARNING("Running on Windows XP or earlier; "
- "alternate data streams will not be captured.");
- }
-
- path_nchars = wcslen(root_disk_path);
- if (path_nchars > WINDOWS_NT_MAX_PATH)
- 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) {
- ERROR_WITH_ERRNO("Can't open %ls", root_disk_path);
- return ret;
- }
-
- win32_get_vol_flags(root_disk_path, &vol_flags, NULL);
/* WARNING: There is no check for overflow later when this buffer is
* being used! But it's as long as the maximum path length understood
- * by Windows NT (which is NOT the same as MAX_PATH). */
- path = MALLOC(WINDOWS_NT_MAX_PATH * sizeof(wchar_t));
+ * by Windows NT (which is NOT the same as MAX_PATH). */
+ path = MALLOC((WINDOWS_NT_MAX_PATH + 1) * sizeof(wchar_t));
if (!path)
return WIMLIB_ERR_NOMEM;
- /* Work around defective behavior in Windows where paths longer than 260
- * characters are not supported by default; instead they need to be
- * turned into absolute paths and prefixed with "\\?\". */
+ /* Translate into full path. */
+ dret = GetFullPathName(root_disk_path, WINDOWS_NT_MAX_PATH - 3,
+ &path[4], NULL);
- if (wcsncmp(root_disk_path, L"\\\\?\\", 4)) {
- dret = GetFullPathName(root_disk_path, WINDOWS_NT_MAX_PATH - 4,
- &path[4], NULL);
+ if (dret == 0 || dret >= WINDOWS_NT_MAX_PATH - 3) {
+ ERROR("Can't get full path name for \"%ls\"", root_disk_path);
+ return WIMLIB_ERR_UNSUPPORTED;
+ }
- if (dret == 0 || dret >= WINDOWS_NT_MAX_PATH - 4) {
- WARNING("Can't get full path name for \"%ls\"", root_disk_path);
- wmemcpy(path, root_disk_path, path_nchars + 1);
- } else {
- wmemcpy(path, L"\\\\?\\", 4);
- path_nchars = 4 + dret;
- /* Update pattern prefix */
- if (params->config != NULL)
- {
- params->config->_prefix = TSTRDUP(path);
- params->config->_prefix_num_tchars = path_nchars;
- if (params->config->_prefix == NULL)
- {
- ret = WIMLIB_ERR_NOMEM;
- goto out_free_path;
- }
- need_prefix_free = true;
- }
- }
- } else {
- wmemcpy(path, root_disk_path, path_nchars + 1);
+ /* Add \??\ prefix to form the NT namespace path. */
+ wmemcpy(path, L"\\??\\", 4);
+ path_nchars = dret + 4;
+
+ /* Strip trailing slashes. If we don't do this, we may create a path
+ * with multiple consecutive backslashes, which for some reason causes
+ * Windows to report that the file cannot be found. */
+ while (path_nchars >= 2 &&
+ path[path_nchars - 1] == L'\\' &&
+ path[path_nchars - 2] != L':')
+ {
+ path[--path_nchars] = L'\0';
}
+ params->capture_root_nchars = path_nchars;
+
memset(&state, 0, sizeof(state));
- ret = win32_build_dentry_tree_recursive(root_ret, path,
- path_nchars, params,
- &state, vol_flags);
- if (need_prefix_free)
- FREE(params->config->_prefix);
-out_free_path:
+ ret = win32_build_dentry_tree_recursive(root_ret, NULL,
+ path, path_nchars, L"", 0,
+ params, &state, 0);
FREE(path);
if (ret == 0)
win32_do_capture_warnings(root_disk_path, &state, params->add_flags);
git://wimlib.net / wimlib / blobdiff