* along with wimlib; if not, see http://www.gnu.org/licenses/.
*/
+#include "config.h"
#if defined(__CYGWIN__) || defined(__WIN32__)
# include <windows.h>
# include <ntdef.h>
# include <wchar.h>
-# include <sys/cygwin.h>
-# include <fcntl.h>
# ifdef ERROR
# undef ERROR
# endif
# include "security.h"
+#else
+# include <dirent.h>
+# include <sys/stat.h>
+# include "timestamp.h"
#endif
#include "wimlib_internal.h"
#include "dentry.h"
-#include "timestamp.h"
#include "lookup_table.h"
#include "xml.h"
-#include <string.h>
-#include <fnmatch.h>
-#include <stdlib.h>
#include <ctype.h>
-#include <sys/stat.h>
-#include <dirent.h>
#include <errno.h>
+#include <fnmatch.h>
+#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
-#if defined(__CYGWIN__) || defined(__WIN32__)
-/*#define ERROR_WIN32_SAFE(format, ...) \*/
-/*{( \*/
- /*DWORD err = GetLastError(); \*/
- /*ERROR(format, ##__VA_ARGS__); \*/
- /*SetLastError(err); \*/
-/*)}*/
-#define DEBUG_WIN32_SAFE(format, ...) \
-({ \
- DWORD err = GetLastError(); \
- DEBUG(format, ##__VA_ARGS__); \
- SetLastError(err); \
-})
+#ifdef HAVE_ALLOCA_H
+#include <alloca.h>
#endif
#define WIMLIB_ADD_IMAGE_FLAG_ROOT 0x80000000
}
#if defined(__CYGWIN__) || defined(__WIN32__)
+
static u64 FILETIME_to_u64(const FILETIME *ft)
{
return ((u64)ft->dwHighDateTime << 32) | (u64)ft->dwLowDateTime;
}
-#ifdef ENABLE_ERROR_MESSAGES
-static void win32_error(DWORD err_code)
-{
- char *buffer;
- DWORD nchars;
- nchars = FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ALLOCATE_BUFFER,
- NULL, err_code, 0,
- (char*)&buffer, 0, NULL);
- if (nchars == 0) {
- ERROR("Error printing error message! "
- "Computer will self-destruct in 3 seconds.");
- } else {
- ERROR("Win32 error: %s", buffer);
- LocalFree(buffer);
- }
-}
-#else
-#define win32_error(err_code)
-#endif
-
-static HANDLE win32_open_file(const wchar_t *path)
-{
- return CreateFileW(path,
- GENERIC_READ | READ_CONTROL,
- FILE_SHARE_READ,
- NULL, /* lpSecurityAttributes */
- OPEN_EXISTING,
- FILE_FLAG_BACKUP_SEMANTICS |
- FILE_FLAG_OPEN_REPARSE_POINT,
- NULL /* hTemplateFile */);
-}
-
-int win32_read_file(const char *filename,
- void *handle, u64 offset, size_t size, u8 *buf)
-{
- HANDLE h = handle;
- DWORD err;
- DWORD bytesRead;
- LARGE_INTEGER liOffset = {.QuadPart = offset};
-
- wimlib_assert(size <= 0xffffffff);
-
- if (SetFilePointerEx(h, liOffset, NULL, FILE_BEGIN))
- if (ReadFile(h, buf, size, &bytesRead, NULL) && bytesRead == size)
- return 0;
- err = GetLastError();
- ERROR("Error reading \"%s\"", filename);
- win32_error(err);
- return WIMLIB_ERR_READ;
-}
-
-void win32_close_handle(void *handle)
-{
- CloseHandle((HANDLE)handle);
-}
-
-void *win32_open_handle(const char *path_utf16)
-{
- return (void*)win32_open_file((const wchar_t*)path_utf16);
-}
static int build_dentry_tree(struct wim_dentry **root_ret,
const char *root_disk_path,
static int win32_get_security_descriptor(struct wim_dentry *dentry,
struct sd_set *sd_set,
- const wchar_t *path_utf16,
- const char *path)
+ const wchar_t *path_utf16)
{
SECURITY_INFORMATION requestedInformation;
DWORD lenNeeded = 0;
BOOL status;
DWORD err;
-#ifdef BACKUP_SECURITY_INFORMATION
- requestedInformation = BACKUP_SECURITY_INFORMATION;
-#else
requestedInformation = DACL_SECURITY_INFORMATION |
SACL_SECURITY_INFORMATION |
OWNER_SECURITY_INFORMATION |
GROUP_SECURITY_INFORMATION;
-#endif
/* Request length of security descriptor */
status = GetFileSecurityW(path_utf16, requestedInformation,
NULL, 0, &lenNeeded);
err = GetLastError();
-
- /* Error code appears to be ERROR_INSUFFICIENT_BUFFER but
- * GetFileSecurity is poorly documented... */
- if (err == ERROR_INSUFFICIENT_BUFFER || err == NO_ERROR) {
+ if (!status && err == ERROR_INSUFFICIENT_BUFFER) {
DWORD len = lenNeeded;
char buf[len];
if (GetFileSecurityW(path_utf16, requestedInformation,
err = GetLastError();
}
}
- ERROR("Win32 API: Failed to read security descriptor of \"%s\"",
- path);
+ ERROR("Win32 API: Failed to read security descriptor of \"%ls\"",
+ path_utf16);
win32_error(err);
return WIMLIB_ERR_READ;
}
-
+/* Reads the directory entries of directory using a Win32 API and recursively
+ * calls build_dentry_tree() on them. */
static int win32_recurse_directory(struct wim_dentry *root,
const char *root_disk_path,
struct wim_lookup_table *lookup_table,
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[path_utf16_nchars + 3];
memcpy(pattern_buf, path_utf16,
path_utf16_nchars * sizeof(wchar_t));
}
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'))))
if (ret)
goto out_find_close;
- char name[strlen(root_disk_path) + utf8_name_nbytes + 1];
+ char name[strlen(root_disk_path) + 1 + utf8_name_nbytes + 1];
sprintf(name, "%s/%s", root_disk_path, utf8_name);
FREE(utf8_name);
ret = build_dentry_tree(&child, name, lookup_table,
return ret;
}
-static int win32_capture_reparse_point(const char *path,
- HANDLE hFile,
+/* 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.
+ *
+ * @inode: WIM inode for the reparse point.
+ *
+ * @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.
+ *
+ * @path: External path to the parse point (UTF-8). Used for error messages
+ * only.
+ *
+ * Returns 0 on success; nonzero on failure. */
+static int win32_capture_reparse_point(HANDLE hFile,
struct wim_inode *inode,
- struct wim_lookup_table *lookup_table)
+ struct wim_lookup_table *lookup_table,
+ const char *path)
{
/* "Reparse point data, including the tag and optional GUID,
* cannot exceed 16 kilobytes." - MSDN */
char reparse_point_buf[16 * 1024];
DWORD bytesReturned;
- const REPARSE_DATA_BUFFER *buf;
if (!DeviceIoControl(hFile, FSCTL_GET_REPARSE_POINT,
NULL, 0, reparse_point_buf,
sizeof(reparse_point_buf), &bytesReturned, NULL))
{
+ DWORD err = GetLastError();
ERROR("Win32 API: Failed to get reparse data of \"%s\"", path);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
+ if (bytesReturned < 8) {
+ ERROR("Reparse data on \"%s\" is invalid", path);
return WIMLIB_ERR_READ;
}
- buf = (const REPARSE_DATA_BUFFER*)reparse_point_buf;
- inode->i_reparse_tag = buf->ReparseTag;
- return inode_add_ads_with_data(inode, "", (const u8*)buf + 8,
+ inode->i_reparse_tag = *(u32*)reparse_point_buf;
+ return inode_add_ads_with_data(inode, "",
+ (const u8*)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;
DWORD bytesRead;
int ret;
- hFile = win32_open_file(path);
+ hFile = win32_open_file_readonly(path);
if (hFile == INVALID_HANDLE_VALUE)
return WIMLIB_ERR_OPEN;
return ret;
}
-static int win32_capture_stream(const char *path,
- const wchar_t *path_utf16,
+/* 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_utf16: Path to the file (UTF-16LE).
+ *
+ * @path_utf16_nchars: Number of 2-byte characters in @path_utf16.
+ *
+ * @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 int win32_capture_stream(const wchar_t *path_utf16,
size_t path_utf16_nchars,
struct wim_inode *inode,
struct wim_lookup_table *lookup_table,
size_t spath_nchars;
DWORD err;
+ /* The stream name should be returned as :NAME:TYPE */
p = dat->cStreamName;
- wimlib_assert(*p == L':');
+ if (*p != L':')
+ goto out_invalid_stream_name;
p += 1;
colon = wcschr(p, L':');
- wimlib_assert(colon != NULL);
+ if (colon == NULL)
+ goto out_invalid_stream_name;
if (wcscmp(colon + 1, L"$DATA")) {
/* Not a DATA stream */
}
is_named_stream = (p != colon);
-
if (is_named_stream) {
+ /* Allocate an ADS entry for the named stream. */
char *utf8_stream_name;
size_t utf8_stream_name_len;
ret = utf16_to_utf8((const char *)p,
- colon - p,
+ (colon - p) * sizeof(wchar_t),
&utf8_stream_name,
&utf8_stream_name_len);
if (ret)
goto out;
- DEBUG_WIN32_SAFE("Add alternate data stream %s:%s", path, utf8_stream_name);
ads_entry = inode_add_ads(inode, utf8_stream_name);
FREE(utf8_stream_name);
if (!ads_entry) {
}
}
+ /* Create a UTF-16 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. */
*colon = '\0';
spath_nchars = path_utf16_nchars;
if (is_named_stream)
ret = win32_sha1sum(spath, hash);
if (ret) {
err = GetLastError();
- ERROR("Win32 API: Failed to read \"%s\" to calculate SHA1sum", path);
+ ERROR("Win32 API: Failed to read \"%ls\" to calculate SHA1sum",
+ path_utf16);
win32_error(err);
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;
FREE(spath);
out:
return ret;
+out_invalid_stream_name:
+ ERROR("Invalid stream name: \"%ls:%ls\"", path_utf16, dat->cStreamName);
+ ret = WIMLIB_ERR_READ;
+ goto out;
}
-static int win32_capture_streams(const char *path,
- const wchar_t *path_utf16,
+/* Scans a Win32 file for unnamed and named data streams (not reparse point
+ * streams).
+ *
+ * @path_utf16: Path to the file (UTF-16LE).
+ *
+ * @path_utf16_nchars: Number of 2-byte characters in @path_utf16.
+ *
+ * @inode: WIM inode to save the stream into.
+ *
+ * @lookup_table: Stream lookup table for the WIM.
+ *
+ * Returns 0 on success; nonzero on failure.
+ */
+static int win32_capture_streams(const wchar_t *path_utf16,
size_t path_utf16_nchars,
struct wim_inode *inode,
struct wim_lookup_table *lookup_table)
hFind = FindFirstStreamW(path_utf16, FindStreamInfoStandard, &dat, 0);
if (hFind == INVALID_HANDLE_VALUE) {
- ERROR("Win32 API: Failed to look up data streams of \"%s\"",
- path);
- return WIMLIB_ERR_READ;
+ err = GetLastError();
+
+ /* 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)
+ {
+ return 0;
+ } else {
+ ERROR("Win32 API: Failed to look up data streams of \"%ls\"",
+ path_utf16);
+ win32_error(err);
+ return WIMLIB_ERR_READ;
+ }
}
do {
- ret = win32_capture_stream(path, path_utf16,
+ ret = win32_capture_stream(path_utf16,
path_utf16_nchars,
inode, lookup_table,
&dat);
} while (FindNextStreamW(hFind, &dat));
err = GetLastError();
if (err != ERROR_HANDLE_EOF) {
- ERROR("Win32 API: Error reading data streams from \"%s\"", path);
+ ERROR("Win32 API: Error reading data streams from \"%ls\"", path_utf16);
win32_error(err);
ret = WIMLIB_ERR_READ;
}
FindClose(hFind);
return ret;
}
+
#endif
/*
* modified if successful. Set to NULL if the file or directory was
* excluded from capture.
*
- * @root_disk_path: The path to the root of the directory tree on disk.
+ * @root_disk_path: The path to the root of the directory tree on disk (UTF-8).
*
* @lookup_table: The lookup table for the WIM file. For each file added to the
* dentry tree being built, an entry is added to the lookup table,
*
* @add_flags: Bitwise or of WIMLIB_ADD_IMAGE_FLAG_*
*
- * @extra_arg: Ignored. (Only used in NTFS mode.)
+ * @extra_arg: Ignored in UNIX builds; used to pass sd_set pointer in Windows
+ * builds.
*
* @return: 0 on success, nonzero on failure. It is a failure if any of
* the files cannot be `stat'ed, or if any of the needed
inode->i_last_write_time = unix_timestamp_to_wim(root_stbuf.st_mtime);
inode->i_last_access_time = unix_timestamp_to_wim(root_stbuf.st_atime);
#endif
- if (sizeof(ino_t) >= 8)
- inode->i_ino = (u64)root_stbuf.st_ino;
- else
- inode->i_ino = (u64)root_stbuf.st_ino |
- ((u64)root_stbuf.st_dev << ((sizeof(ino_t) * 8) & 63));
+ /* Leave the inode number at 0 for directories. */
+ if (!S_ISDIR(root_stbuf.st_mode)) {
+ if (sizeof(ino_t) >= 8)
+ inode->i_ino = (u64)root_stbuf.st_ino;
+ else
+ inode->i_ino = (u64)root_stbuf.st_ino |
+ ((u64)root_stbuf.st_dev <<
+ ((sizeof(ino_t) * 8) & 63));
+ }
inode->i_resolved = 1;
if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) {
ret = inode_set_unix_data(inode, root_stbuf.st_uid,
sd_set = extra_arg;
}
- DEBUG_WIN32_SAFE("root_disk_path=\"%s\"", root_disk_path);
ret = utf8_to_utf16(root_disk_path, strlen(root_disk_path),
(char**)&path_utf16, &path_utf16_nchars);
if (ret)
goto out_destroy_sd_set;
path_utf16_nchars /= sizeof(wchar_t);
- DEBUG_WIN32_SAFE("Win32: Opening file `%s'", root_disk_path);
- HANDLE hFile = win32_open_file(path_utf16);
+ HANDLE hFile = win32_open_file_readonly(path_utf16);
if (hFile == INVALID_HANDLE_VALUE) {
err = GetLastError();
ERROR("Win32 API: Failed to open \"%s\"", root_disk_path);
ret = WIMLIB_ERR_NOMEM;
else
ret = WIMLIB_ERR_ICONV_NOT_AVAILABLE;
- goto out_free_path_utf16;
+ goto out_close_handle;
}
/* Start preparing the associated WIM inode */
ret = win32_get_short_name(root, path_utf16);
if (ret)
goto out_close_handle;
- ret = win32_get_security_descriptor(root, sd_set, path_utf16,
- root_disk_path);
+ ret = win32_get_security_descriptor(root, sd_set, path_utf16);
if (ret)
goto out_close_handle;
if (inode_is_directory(inode)) {
/* Directory (not a reparse point) --- recurse to children */
- DEBUG_WIN32_SAFE("Recursing to directory \"%s\"", root_disk_path);
+
+ /* But first... directories may have alternate data streams that
+ * need to be captured. */
+ ret = win32_capture_streams(path_utf16,
+ path_utf16_nchars,
+ inode,
+ lookup_table);
+ if (ret)
+ goto out_close_handle;
ret = win32_recurse_directory(root,
root_disk_path,
lookup_table,
path_utf16_nchars);
} else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
/* Reparse point: save the reparse tag and data */
-
- DEBUG_WIN32_SAFE("Capturing reparse point `%s'", root_disk_path);
- ret = win32_capture_reparse_point(root_disk_path,
- hFile,
+ ret = win32_capture_reparse_point(hFile,
inode,
- lookup_table);
-
+ lookup_table,
+ root_disk_path);
} else {
- DEBUG_WIN32_SAFE("Capturing streams of \"%s\"", root_disk_path);
- /* Not a directory, not a reparse point */
- ret = win32_capture_streams(root_disk_path,
- path_utf16,
+ /* Not a directory, not a reparse point; capture the default
+ * file contents and any alternate data streams. */
+ ret = win32_capture_streams(path_utf16,
path_utf16_nchars,
inode,
lookup_table);
}
out_close_handle:
CloseHandle(hFile);
+out_free_path_utf16:
+ FREE(path_utf16);
out_destroy_sd_set:
if (extra_arg == NULL)
destroy_sd_set(sd_set);
-out_free_path_utf16:
- FREE(path_utf16);
#endif
+ /* The below lines of code are common to both UNIX and Win32 builds. It
+ * simply returns the captured directory tree if the capture was
+ * successful, or frees it if the capture was unsuccessful. */
out:
if (ret == 0)
*root_ret = root;
{
char *p;
if (target_path == NULL)
- target_path = "";
+ return "";
for (;;) {
if (*target_path == '\0')
return target_path;
return target_path;
}
+#if defined(__CYGWIN__) || defined(__WIN32__)
+static void zap_backslashes(char *s)
+{
+ while (*s) {
+ if (*s == '\\')
+ *s = '/';
+ s++;
+ }
+}
+#endif
+
/* Strip leading and trailing slashes from the target paths */
static void canonicalize_targets(struct wimlib_capture_source *sources,
size_t num_sources)
DEBUG("Canonicalizing { source: \"%s\", target=\"%s\"}",
sources->fs_source_path,
sources->wim_target_path);
+#if defined(__CYGWIN__) || defined(__WIN32__)
+ /* The Windows API can handle forward slashes. Just get rid of
+ * backslashes to avoid confusing other parts of the library
+ * code. */
+ zap_backslashes(sources->fs_source_path);
+ if (sources->wim_target_path)
+ zap_backslashes(sources->wim_target_path);
+#endif
sources->wim_target_path =
(char*)canonicalize_target_path(sources->wim_target_path);
DEBUG("Canonical target: \"%s\"", sources->wim_target_path);
* after leading and trailing forward slashes are stripped.
*
* One purpose of this is to make sure that target paths that are inside other
- * target paths are extracted after the containing target paths. */
+ * target paths are added after the containing target paths. */
static void sort_sources(struct wimlib_capture_source *sources,
size_t num_sources)
{
extra_arg = NULL;
}
+#if defined(__CYGWIN__) || defined(__WIN32__)
+ if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_UNIX_DATA) {
+ ERROR("Capturing UNIX-specific data is not supported on Windows");
+ return WIMLIB_ERR_INVALID_PARAM;
+ }
+ if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_DEREFERENCE) {
+ ERROR("Dereferencing symbolic links is not supported on Windows");
+ return WIMLIB_ERR_INVALID_PARAM;
+ }
+#endif
+
if (!name || !*name) {
ERROR("Must specify a non-empty string for the image name");
return WIMLIB_ERR_INVALID_PARAM;
DEBUG("Building dentry tree.");
if (num_sources == 0) {
root_dentry = new_filler_directory("");
- if (!root_dentry)
+ if (!root_dentry) {
+ ret = WIMLIB_ERR_NOMEM;
goto out_free_security_data;
+ }
} else {
size_t i;
+#if defined(__CYGWIN__) || defined(__WIN32__)
+ win32_acquire_privilege(SE_BACKUP_NAME);
+ win32_acquire_privilege(SE_SECURITY_NAME);
+ win32_acquire_privilege(SE_TAKE_OWNERSHIP_NAME);
+#endif
root_dentry = NULL;
i = 0;
do {
if (add_image_flags & WIMLIB_ADD_IMAGE_FLAG_BOOT)
wimlib_set_boot_idx(w, w->hdr.image_count);
ret = 0;
- goto out;
+ goto out_destroy_capture_config;
out_destroy_imd:
destroy_image_metadata(&w->image_metadata[w->hdr.image_count - 1],
w->lookup_table);
out_destroy_capture_config:
destroy_capture_config(&config);
out:
+#if defined(__CYGWIN__) || defined(__WIN32__)
+ win32_release_privilege(SE_BACKUP_NAME);
+ win32_release_privilege(SE_SECURITY_NAME);
+ win32_release_privilege(SE_TAKE_OWNERSHIP_NAME);
+#endif
return ret;
}