*/
/*
- * 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/apply.h"
-#include "wimlib/capture.h" /* for mangle_pat() */
+#include "wimlib/capture.h" /* for mangle_pat() and match_pattern_list() */
#include "wimlib/dentry.h"
#include "wimlib/error.h"
#include "wimlib/lookup_table.h"
#include "wimlib/resource.h"
#include "wimlib/textfile.h"
#include "wimlib/xml.h"
-#include "wimlib/wildcard.h"
#include "wimlib/wim.h"
#include "wimlib/wimboot.h"
{
struct string_set *pats;
const tchar *path;
- size_t path_nchars;
pats = get_private_data(ctx)->prepopulate_pats;
if (!pats || !pats->num_strings)
if (!path)
return false;
- path_nchars = tstrlen(path);
-
- for (size_t i = 0; i < pats->num_strings; i++)
- if (match_path(path, path_nchars, pats->strings[i],
- OS_PREFERRED_PATH_SEPARATOR, true))
- return true;
-
- return false;
+ return match_pattern_list(path, tstrlen(path), pats);
}
static int
return wim_reshdr_to_hash(&wim->hdr.lookup_table_reshdr, wim, hash);
}
+/* Given a Windows-style path, return the number of characters of the prefix
+ * that specify the path to the root directory of a drive, or return 0 if the
+ * drive is relative (or at least on the current drive, in the case of
+ * absolute-but-not-really-absolute paths like \Windows\System32) */
+static size_t
+win32_path_drive_spec_len(const wchar_t *path)
+{
+ size_t n = 0;
+
+ if (!wcsncmp(path, L"\\\\?\\", 4)) {
+ /* \\?\-prefixed path. Check for following drive letter and
+ * path separator. */
+ if (path[4] != L'\0' && path[5] == L':' &&
+ is_any_path_separator(path[6]))
+ n = 7;
+ } else {
+ /* Not a \\?\-prefixed path. Check for an initial drive letter
+ * and path separator. */
+ if (path[0] != L'\0' && path[1] == L':' &&
+ is_any_path_separator(path[2]))
+ n = 3;
+ }
+ /* Include any additional path separators.*/
+ if (n > 0)
+ while (is_any_path_separator(path[n]))
+ n++;
+ return n;
+}
+
+static bool
+win32_path_is_root_of_drive(const wchar_t *path)
+{
+ size_t drive_spec_len;
+ wchar_t full_path[32768];
+ DWORD ret;
+
+ ret = GetFullPathName(path, ARRAY_LEN(full_path), full_path, NULL);
+ if (ret > 0 && ret < ARRAY_LEN(full_path))
+ path = full_path;
+
+ /* Explicit drive letter and path separator? */
+ drive_spec_len = win32_path_drive_spec_len(path);
+ if (drive_spec_len > 0 && path[drive_spec_len] == L'\0')
+ return true;
+
+ /* All path separators? */
+ for (const wchar_t *p = path; *p != L'\0'; p++)
+ if (!is_any_path_separator(*p))
+ return false;
+ return true;
+}
+
+/* Given a path, which may not yet exist, get a set of flags that describe the
+ * features of the volume the path is on. */
+static int
+win32_get_vol_flags(const wchar_t *path, unsigned *vol_flags_ret,
+ bool *supports_SetFileShortName_ret)
+{
+ wchar_t *volume;
+ BOOL bret;
+ DWORD vol_flags;
+ size_t drive_spec_len;
+ wchar_t filesystem_name[MAX_PATH + 1];
+
+ if (supports_SetFileShortName_ret)
+ *supports_SetFileShortName_ret = false;
+
+ drive_spec_len = win32_path_drive_spec_len(path);
+
+ if (drive_spec_len == 0)
+ if (path[0] != L'\0' && path[1] == L':') /* Drive-relative path? */
+ drive_spec_len = 2;
+
+ if (drive_spec_len == 0) {
+ /* Path does not start with a drive letter; use the volume of
+ * the current working directory. */
+ volume = NULL;
+ } else {
+ /* Path starts with a drive letter (or \\?\ followed by a drive
+ * letter); use it. */
+ volume = alloca((drive_spec_len + 2) * sizeof(wchar_t));
+ wmemcpy(volume, path, drive_spec_len);
+ /* Add trailing backslash in case this was a drive-relative
+ * path. */
+ volume[drive_spec_len] = L'\\';
+ volume[drive_spec_len + 1] = L'\0';
+ }
+ bret = GetVolumeInformation(
+ volume, /* lpRootPathName */
+ NULL, /* lpVolumeNameBuffer */
+ 0, /* nVolumeNameSize */
+ NULL, /* lpVolumeSerialNumber */
+ NULL, /* lpMaximumComponentLength */
+ &vol_flags, /* lpFileSystemFlags */
+ filesystem_name, /* lpFileSystemNameBuffer */
+ ARRAY_LEN(filesystem_name)); /* nFileSystemNameSize */
+ if (!bret) {
+ set_errno_from_GetLastError();
+ WARNING_WITH_ERRNO("Failed to get volume information for "
+ "path \"%ls\"", path);
+ vol_flags = 0xffffffff;
+ goto out;
+ }
+
+ if (wcsstr(filesystem_name, L"NTFS")) {
+ /* FILE_SUPPORTS_HARD_LINKS is only supported on Windows 7 and later.
+ * Force it on anyway if filesystem is NTFS. */
+ vol_flags |= FILE_SUPPORTS_HARD_LINKS;
+
+ if (supports_SetFileShortName_ret)
+ *supports_SetFileShortName_ret = true;
+ }
+
+out:
+ DEBUG("using vol_flags = %x", vol_flags);
+ *vol_flags_ret = vol_flags;
+ return 0;
+}
+
static int
win32_start_extract(const wchar_t *path, struct apply_ctx *ctx)
{
if (vol_flags & FILE_SUPPORTS_REPARSE_POINTS) {
ctx->supported_features.reparse_points = 1;
- if (win32func_CreateSymbolicLinkW)
+ if (func_CreateSymbolicLinkW)
ctx->supported_features.symlink_reparse_points = 1;
}
win32_create_symlink(const wchar_t *oldpath, const wchar_t *newpath,
struct apply_ctx *ctx)
{
- if (!(*win32func_CreateSymbolicLinkW)(newpath, oldpath, 0)) {
+ if (!(*func_CreateSymbolicLinkW)(newpath, oldpath, 0)) {
if (GetLastError() != ERROR_ALREADY_EXISTS)
goto error;
if (!win32_delete_file_wrapper(newpath))
goto error;
- if (!(*win32func_CreateSymbolicLinkW)(newpath, oldpath, 0))
+ if (!(*func_CreateSymbolicLinkW)(newpath, oldpath, 0))
goto error;
}
return 0;
creationDisposition, FILE_FLAG_BACKUP_SEMANTICS |
FILE_FLAG_OPEN_REPARSE_POINT,
NULL);
- if (h == INVALID_HANDLE_VALUE)
- goto error;
+ if (h == INVALID_HANDLE_VALUE) {
+ set_errno_from_GetLastError();
+ ret = WIMLIB_ERR_OPEN;
+ goto out;
+ }
- ret = 0;
- if (!lte)
+ if (!lte) {
+ ret = 0;
goto out_close_handle;
+ }
+
+ if (!SetFilePointerEx(h,
+ (LARGE_INTEGER) { .QuadPart = lte->size},
+ NULL,
+ FILE_BEGIN))
+ goto write_error;
+
+ if (!SetEndOfFile(h))
+ goto write_error;
+
+ if (!SetFilePointerEx(h,
+ (LARGE_INTEGER) { .QuadPart = 0},
+ NULL,
+ FILE_BEGIN))
+ goto write_error;
+
ret = extract_stream(lte, lte->size, win32_extract_wim_chunk, h);
-out_close_handle:
- if (!CloseHandle(h))
- goto error;
- if (ret && !errno)
- errno = -1;
- return ret;
+ goto out_close_handle;
-error:
+write_error:
set_errno_from_GetLastError();
- return WIMLIB_ERR_WRITE;
+ ret = WIMLIB_ERR_WRITE;
+
+out_close_handle:
+ if (!CloseHandle(h)) {
+ if (!ret) {
+ set_errno_from_GetLastError();
+ ret = WIMLIB_ERR_WRITE;
+ }
+ }
+out:
+ return ret;
}
static int
return WIMLIB_ERR_WRITE; /* XXX: need better error code */
}
-static DWORD
-do_win32_set_security_descriptor(HANDLE h, const wchar_t *path,
- SECURITY_INFORMATION info,
- PSECURITY_DESCRIPTOR desc)
-{
-#ifdef WITH_NTDLL
- if (func_NtSetSecurityObject) {
- return (*func_RtlNtStatusToDosError)(
- (*func_NtSetSecurityObject)(h, info, desc));
- }
-#endif
- if (SetFileSecurity(path, info, desc))
- return ERROR_SUCCESS;
- else
- return GetLastError();
-}
-
/*
* Set an arbitrary security descriptor on an arbitrary file (or directory),
* working around bugs and design flaws in the Windows operating system.
size_t desc_size, struct apply_ctx *ctx)
{
SECURITY_INFORMATION info;
+ DWORD dwDesiredAccess;
HANDLE h;
+ DWORD status;
int ret;
/* We really just want to set entire the security descriptor as-is, but
info = OWNER_SECURITY_INFORMATION | GROUP_SECURITY_INFORMATION |
DACL_SECURITY_INFORMATION | SACL_SECURITY_INFORMATION;
- h = INVALID_HANDLE_VALUE;
-
/* Prefer NtSetSecurityObject() to SetFileSecurity(). SetFileSecurity()
* itself necessarily uses NtSetSecurityObject() as the latter is the
* underlying system call for setting security information, but
* Administrator can have access denied. (Of course, this not mentioned
* in the MS "documentation".) */
-#ifdef WITH_NTDLL
- if (func_NtSetSecurityObject) {
- DWORD dwDesiredAccess;
-
- /* Open a handle for NtSetSecurityObject() with as many relevant
- * access rights as possible.
- *
- * We don't know which rights will be actually granted. It
- * could be less than what is needed to actually assign the full
- * security descriptor, especially if the process is running as
- * a non-Administrator. However, by default we just do the best
- * we can, unless WIMLIB_EXTRACT_FLAG_STRICT_ACLS has been
- * enabled. The MAXIMUM_ALLOWED access right is seemingly
- * designed for this use case; however, it does not work
- * properly in all cases: it can cause CreateFile() to fail with
- * ERROR_ACCESS_DENIED, even though by definition
- * MAXIMUM_ALLOWED access only requests access rights that are
- * *not* denied. (Needless to say, MS does not document this
- * bug.) */
-
- dwDesiredAccess = WRITE_DAC |
- WRITE_OWNER |
- ACCESS_SYSTEM_SECURITY;
- for (;;) {
- DWORD err;
-
- h = win32_open_existing_file(path, dwDesiredAccess);
- if (h != INVALID_HANDLE_VALUE)
- break;
- err = GetLastError();
- if (err == ERROR_ACCESS_DENIED ||
- err == ERROR_PRIVILEGE_NOT_HELD)
- {
- /* Don't increment partial_security_descriptors
- * here or check WIMLIB_EXTRACT_FLAG_STRICT_ACLS
- * here. It will be done later if needed; here
- * we are just trying to get as many relevant
- * access rights as possible. */
- if (dwDesiredAccess & ACCESS_SYSTEM_SECURITY) {
- dwDesiredAccess &= ~ACCESS_SYSTEM_SECURITY;
- continue;
- }
- if (dwDesiredAccess & WRITE_DAC) {
- dwDesiredAccess &= ~WRITE_DAC;
- continue;
- }
- if (dwDesiredAccess & WRITE_OWNER) {
- dwDesiredAccess &= ~WRITE_OWNER;
- continue;
- }
+ /* Open a handle for NtSetSecurityObject() with as many relevant
+ * access rights as possible.
+ *
+ * We don't know which rights will be actually granted. It
+ * could be less than what is needed to actually assign the full
+ * security descriptor, especially if the process is running as
+ * a non-Administrator. However, by default we just do the best
+ * we can, unless WIMLIB_EXTRACT_FLAG_STRICT_ACLS has been
+ * enabled. The MAXIMUM_ALLOWED access right is seemingly
+ * designed for this use case; however, it does not work
+ * properly in all cases: it can cause CreateFile() to fail with
+ * ERROR_ACCESS_DENIED, even though by definition
+ * MAXIMUM_ALLOWED access only requests access rights that are
+ * *not* denied. (Needless to say, MS does not document this
+ * bug.) */
+
+ dwDesiredAccess = WRITE_DAC | WRITE_OWNER | ACCESS_SYSTEM_SECURITY;
+ while ((h = win32_open_existing_file(path,
+ dwDesiredAccess)) == INVALID_HANDLE_VALUE)
+ {
+ DWORD err;
+
+ err = GetLastError();
+ if (err == ERROR_ACCESS_DENIED ||
+ err == ERROR_PRIVILEGE_NOT_HELD)
+ {
+ /* Don't increment partial_security_descriptors
+ * here or check WIMLIB_EXTRACT_FLAG_STRICT_ACLS
+ * here. It will be done later if needed; here
+ * we are just trying to get as many relevant
+ * access rights as possible. */
+ if (dwDesiredAccess & ACCESS_SYSTEM_SECURITY) {
+ dwDesiredAccess &= ~ACCESS_SYSTEM_SECURITY;
+ continue;
+ }
+ if (dwDesiredAccess & WRITE_DAC) {
+ dwDesiredAccess &= ~WRITE_DAC;
+ continue;
+ }
+ if (dwDesiredAccess & WRITE_OWNER) {
+ dwDesiredAccess &= ~WRITE_OWNER;
+ continue;
}
- /* Other error, or couldn't open the file even with no
- * access rights specified. Something else must be
- * wrong. */
- set_errno_from_win32_error(err);
- return WIMLIB_ERR_SET_SECURITY;
}
+ /* Other error, or couldn't open the file even with no
+ * access rights specified. Something else must be
+ * wrong. */
+ set_errno_from_win32_error(err);
+ return WIMLIB_ERR_SET_SECURITY;
}
-#endif
/* Try setting the security descriptor. */
- for (;;) {
- DWORD err;
-
- err = do_win32_set_security_descriptor(h, path, info,
- (PSECURITY_DESCRIPTOR)desc);
- if (err == ERROR_SUCCESS) {
- ret = 0;
- break;
- }
-
+ ret = 0;
+ while (!(NT_SUCCESS(status = (*func_NtSetSecurityObject)(h,
+ info,
+ (PSECURITY_DESCRIPTOR)desc))))
+ {
/* Failed to set the requested parts of the security descriptor.
* If the error was permissions-related, try to set fewer parts
* of the security descriptor, unless
* WIMLIB_EXTRACT_FLAG_STRICT_ACLS is enabled. */
- if ((err == ERROR_PRIVILEGE_NOT_HELD ||
- err == ERROR_ACCESS_DENIED) &&
+ if ((status == STATUS_PRIVILEGE_NOT_HELD ||
+ status == STATUS_ACCESS_DENIED) &&
!(ctx->extract_flags & WIMLIB_EXTRACT_FLAG_STRICT_ACLS))
{
if (info & SACL_SECURITY_INFORMATION) {
* security descriptor could not be set. */
if (!(info & SACL_SECURITY_INFORMATION))
ctx->partial_security_descriptors--;
- set_errno_from_win32_error(err);
+ set_errno_from_nt_status(status);
ret = WIMLIB_ERR_SET_SECURITY;
break;
}
/* Close handle opened for NtSetSecurityObject(). */
-#ifdef WITH_NTDLL
- if (func_NtSetSecurityObject)
- CloseHandle(h);
-#endif
+ CloseHandle(h);
return ret;
}