# 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>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
-#else
-#include <stdlib.h>
#endif
#define WIMLIB_ADD_IMAGE_FLAG_ROOT 0x80000000
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;
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.
+ * Unlink 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;
}
- 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,
+ if (bytesReturned < 8) {
+ ERROR("Reparse data on \"%s\" is invalid", path);
+ return WIMLIB_ERR_READ;
+ }
+ 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,
}
}
+ /* 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 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)
{
return 0;
} else {
- ERROR("Win32 API: Failed to look up data streams of \"%s\"",
- path);
+ 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;
}
* 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
ret = utf8_to_utf16(root_disk_path, strlen(root_disk_path),
(char**)&path_utf16, &path_utf16_nchars);
if (ret)
- goto out_destroy_sd_set;
+ goto out;
path_utf16_nchars /= sizeof(wchar_t);
- 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;
/* Directory (not a reparse point) --- recurse to children */
/* But first... directories may have alternate data streams that
- * need to be captured (maybe?) */
- ret = win32_capture_streams(root_disk_path,
- path_utf16,
+ * need to be captured. */
+ ret = win32_capture_streams(path_utf16,
path_utf16_nchars,
inode,
lookup_table);
path_utf16_nchars);
} else if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT) {
/* Reparse point: save the reparse tag and data */
-
- ret = win32_capture_reparse_point(root_disk_path,
- hFile,
+ ret = win32_capture_reparse_point(hFile,
inode,
- lookup_table);
-
+ lookup_table,
+ root_disk_path);
} else {
- /* 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_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;
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);
+ 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);
git://wimlib.net / wimlib / commitdiff