*/
/*
- * Copyright (C) 2013 Eric Biggers
+ * Copyright (C) 2013-2016 Eric Biggers
*
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
*
- * wimlib is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 3 of the License, or (at your option)
- * any later version.
- *
- * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- * A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * This file is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
- * You should have received a copy of the GNU General Public License
- * along with wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
*/
#ifdef __WIN32__
# include "config.h"
#endif
+#include <errno.h>
#include <pthread.h>
-#include <shlwapi.h> /* for PathMatchSpecW() */
+#include <io.h> /* for _get_osfhandle() */
+#include <fcntl.h>
+
#include "wimlib/win32_common.h"
#include "wimlib/assert.h"
-#include "wimlib/file_io.h"
+#include "wimlib/glob.h"
#include "wimlib/error.h"
+#include "wimlib/timestamp.h"
#include "wimlib/util.h"
+static int
+win32_error_to_errno(DWORD err_code)
+{
+ /* This mapping is that used in Cygwin.
+ * Some of these choices are arbitrary. */
+ switch (err_code) {
+ case ERROR_ACCESS_DENIED:
+ return EACCES;
+ case ERROR_ACTIVE_CONNECTIONS:
+ return EAGAIN;
+ case ERROR_ALREADY_EXISTS:
+ return EEXIST;
+ case ERROR_BAD_DEVICE:
+ return ENODEV;
+ case ERROR_BAD_EXE_FORMAT:
+ return ENOEXEC;
+ case ERROR_BAD_NETPATH:
+ return ENOENT;
+ case ERROR_BAD_NET_NAME:
+ return ENOENT;
+ case ERROR_BAD_NET_RESP:
+ return ENOSYS;
+ case ERROR_BAD_PATHNAME:
+ return ENOENT;
+ case ERROR_BAD_PIPE:
+ return EINVAL;
+ case ERROR_BAD_UNIT:
+ return ENODEV;
+ case ERROR_BAD_USERNAME:
+ return EINVAL;
+ case ERROR_BEGINNING_OF_MEDIA:
+ return EIO;
+ case ERROR_BROKEN_PIPE:
+ return EPIPE;
+ case ERROR_BUSY:
+ return EBUSY;
+ case ERROR_BUS_RESET:
+ return EIO;
+ case ERROR_CALL_NOT_IMPLEMENTED:
+ return ENOSYS;
+ case ERROR_CANNOT_MAKE:
+ return EPERM;
+ case ERROR_CHILD_NOT_COMPLETE:
+ return EBUSY;
+ case ERROR_COMMITMENT_LIMIT:
+ return EAGAIN;
+ case ERROR_CRC:
+ return EIO;
+ case ERROR_DEVICE_DOOR_OPEN:
+ return EIO;
+ case ERROR_DEVICE_IN_USE:
+ return EAGAIN;
+ case ERROR_DEVICE_REQUIRES_CLEANING:
+ return EIO;
+ case ERROR_DIRECTORY:
+ return ENOTDIR;
+ case ERROR_DIR_NOT_EMPTY:
+ return ENOTEMPTY;
+ case ERROR_DISK_CORRUPT:
+ return EIO;
+ case ERROR_DISK_FULL:
+ return ENOSPC;
+#ifdef ENOTUNIQ
+ case ERROR_DUP_NAME:
+ return ENOTUNIQ;
+#endif
+ case ERROR_EAS_DIDNT_FIT:
+ return ENOSPC;
+#ifdef ENOTSUP
+ case ERROR_EAS_NOT_SUPPORTED:
+ return ENOTSUP;
+#endif
+ case ERROR_EA_LIST_INCONSISTENT:
+ return EINVAL;
+ case ERROR_EA_TABLE_FULL:
+ return ENOSPC;
+ case ERROR_END_OF_MEDIA:
+ return ENOSPC;
+ case ERROR_EOM_OVERFLOW:
+ return EIO;
+ case ERROR_EXE_MACHINE_TYPE_MISMATCH:
+ return ENOEXEC;
+ case ERROR_EXE_MARKED_INVALID:
+ return ENOEXEC;
+ case ERROR_FILEMARK_DETECTED:
+ return EIO;
+ case ERROR_FILENAME_EXCED_RANGE:
+ return ENAMETOOLONG;
+ case ERROR_FILE_CORRUPT:
+ return EEXIST;
+ case ERROR_FILE_EXISTS:
+ return EEXIST;
+ case ERROR_FILE_INVALID:
+ return ENXIO;
+ case ERROR_FILE_NOT_FOUND:
+ return ENOENT;
+ case ERROR_HANDLE_DISK_FULL:
+ return ENOSPC;
+#ifdef ENODATA
+ case ERROR_HANDLE_EOF:
+ return ENODATA;
+#endif
+ case ERROR_INVALID_ADDRESS:
+ return EINVAL;
+ case ERROR_INVALID_AT_INTERRUPT_TIME:
+ return EINTR;
+ case ERROR_INVALID_BLOCK_LENGTH:
+ return EIO;
+ case ERROR_INVALID_DATA:
+ return EINVAL;
+ case ERROR_INVALID_DRIVE:
+ return ENODEV;
+ case ERROR_INVALID_EA_NAME:
+ return EINVAL;
+ case ERROR_INVALID_EXE_SIGNATURE:
+ return ENOEXEC;
+#ifdef EBADRQC
+ case ERROR_INVALID_FUNCTION:
+ return EBADRQC;
+#endif
+ case ERROR_INVALID_HANDLE:
+ return EBADF;
+ case ERROR_INVALID_NAME:
+ return ENOENT;
+ case ERROR_INVALID_PARAMETER:
+ return EINVAL;
+ case ERROR_INVALID_SIGNAL_NUMBER:
+ return EINVAL;
+ case ERROR_IOPL_NOT_ENABLED:
+ return ENOEXEC;
+ case ERROR_IO_DEVICE:
+ return EIO;
+ case ERROR_IO_INCOMPLETE:
+ return EAGAIN;
+ case ERROR_IO_PENDING:
+ return EAGAIN;
+ case ERROR_LOCK_VIOLATION:
+ return EBUSY;
+ case ERROR_MAX_THRDS_REACHED:
+ return EAGAIN;
+ case ERROR_META_EXPANSION_TOO_LONG:
+ return EINVAL;
+ case ERROR_MOD_NOT_FOUND:
+ return ENOENT;
+#ifdef EMSGSIZE
+ case ERROR_MORE_DATA:
+ return EMSGSIZE;
+#endif
+ case ERROR_NEGATIVE_SEEK:
+ return EINVAL;
+ case ERROR_NETNAME_DELETED:
+ return ENOENT;
+ case ERROR_NOACCESS:
+ return EFAULT;
+ case ERROR_NONE_MAPPED:
+ return EINVAL;
+ case ERROR_NONPAGED_SYSTEM_RESOURCES:
+ return EAGAIN;
+#ifdef ENOLINK
+ case ERROR_NOT_CONNECTED:
+ return ENOLINK;
+#endif
+ case ERROR_NOT_ENOUGH_MEMORY:
+ return ENOMEM;
+ case ERROR_NOT_OWNER:
+ return EPERM;
+#ifdef ENOMEDIUM
+ case ERROR_NOT_READY:
+ return ENOMEDIUM;
+#endif
+ case ERROR_NOT_SAME_DEVICE:
+ return EXDEV;
+ case ERROR_NOT_SUPPORTED:
+ return ENOSYS;
+ case ERROR_NO_DATA:
+ return EPIPE;
+ case ERROR_NO_DATA_DETECTED:
+ return EIO;
+#ifdef ENOMEDIUM
+ case ERROR_NO_MEDIA_IN_DRIVE:
+ return ENOMEDIUM;
+#endif
+#ifdef ENMFILE
+ case ERROR_NO_MORE_FILES:
+ return ENMFILE;
+#endif
+#ifdef ENMFILE
+ case ERROR_NO_MORE_ITEMS:
+ return ENMFILE;
+#endif
+ case ERROR_NO_MORE_SEARCH_HANDLES:
+ return ENFILE;
+ case ERROR_NO_PROC_SLOTS:
+ return EAGAIN;
+ case ERROR_NO_SIGNAL_SENT:
+ return EIO;
+ case ERROR_NO_SYSTEM_RESOURCES:
+ return EFBIG;
+ case ERROR_NO_TOKEN:
+ return EINVAL;
+ case ERROR_OPEN_FAILED:
+ return EIO;
+ case ERROR_OPEN_FILES:
+ return EAGAIN;
+ case ERROR_OUTOFMEMORY:
+ return ENOMEM;
+ case ERROR_PAGED_SYSTEM_RESOURCES:
+ return EAGAIN;
+ case ERROR_PAGEFILE_QUOTA:
+ return EAGAIN;
+ case ERROR_PATH_NOT_FOUND:
+ return ENOENT;
+ case ERROR_PIPE_BUSY:
+ return EBUSY;
+ case ERROR_PIPE_CONNECTED:
+ return EBUSY;
+#ifdef ECOMM
+ case ERROR_PIPE_LISTENING:
+ return ECOMM;
+ case ERROR_PIPE_NOT_CONNECTED:
+ return ECOMM;
+#endif
+ case ERROR_POSSIBLE_DEADLOCK:
+ return EDEADLOCK;
+ case ERROR_PRIVILEGE_NOT_HELD:
+ return EPERM;
+ case ERROR_PROCESS_ABORTED:
+ return EFAULT;
+ case ERROR_PROC_NOT_FOUND:
+ return ESRCH;
+#ifdef ENONET
+ case ERROR_REM_NOT_LIST:
+ return ENONET;
+#endif
+ case ERROR_SECTOR_NOT_FOUND:
+ return EINVAL;
+ case ERROR_SEEK:
+ return EINVAL;
+ case ERROR_SETMARK_DETECTED:
+ return EIO;
+ case ERROR_SHARING_BUFFER_EXCEEDED:
+ return ENOLCK;
+ case ERROR_SHARING_VIOLATION:
+ return EBUSY;
+ case ERROR_SIGNAL_PENDING:
+ return EBUSY;
+ case ERROR_SIGNAL_REFUSED:
+ return EIO;
+#ifdef ELIBBAD
+ case ERROR_SXS_CANT_GEN_ACTCTX:
+ return ELIBBAD;
+#endif
+ case ERROR_THREAD_1_INACTIVE:
+ return EINVAL;
+ case ERROR_TOO_MANY_LINKS:
+ return EMLINK;
+ case ERROR_TOO_MANY_OPEN_FILES:
+ return EMFILE;
+ case ERROR_WAIT_NO_CHILDREN:
+ return ECHILD;
+ case ERROR_WORKING_SET_QUOTA:
+ return EAGAIN;
+ case ERROR_WRITE_PROTECT:
+ return EROFS;
+ default:
+ return -1;
+ }
+}
+
+static void
+set_errno_from_win32_error(DWORD err)
+{
+ errno = win32_error_to_errno(err);
+}
+
+static void
+set_errno_from_GetLastError(void)
+{
+ set_errno_from_win32_error(GetLastError());
+}
+
/* Replacement for POSIX fsync() */
int
fsync(int fd)
return -1;
}
-/* Use the Win32 API to get the number of processors */
+/* Use the Win32 API to get the number of processors. */
unsigned
-win32_get_number_of_processors(void)
+get_available_cpus(void)
{
SYSTEM_INFO sysinfo;
GetSystemInfo(&sysinfo);
return sysinfo.dwNumberOfProcessors;
}
+/* Use the Win32 API to get the amount of available memory. */
+u64
+get_available_memory(void)
+{
+ MEMORYSTATUSEX status = {
+ .dwLength = sizeof(status),
+ };
+ GlobalMemoryStatusEx(&status);
+ return (u64)min(status.ullTotalPhys, status.ullTotalVirtual) * 85 / 100;
+}
+
/* Replacement for POSIX-2008 realpath(). Warning: partial functionality only
* (resolved_path must be NULL). Also I highly doubt that GetFullPathName
* really does the right thing under all circumstances. */
ret = GetFullPathNameW(path, ret, resolved_path, NULL);
if (!ret) {
err = GetLastError();
- free(resolved_path);
+ FREE(resolved_path);
resolved_path = NULL;
goto fail_win32;
}
return resolved_path;
}
-/* rename() on Windows fails if the destination file exists. And we need to
- * make it work on wide characters. Fix it. */
+/* A quick hack to get reasonable rename() semantics on Windows, in particular
+ * deleting the destination file instead of failing with ERROR_FILE_EXISTS and
+ * working around any processes that may have the destination file open.
+ *
+ * Note: This is intended to be called when overwriting a regular file with an
+ * updated copy and is *not* a fully POSIX compliant rename(). For that you may
+ * wish to take a look at Cygwin's implementation, but be prepared...
+ *
+ * Return 0 on success, -1 on regular error, or 1 if the destination file was
+ * deleted but the source could not be renamed and therefore should not be
+ * deleted.
+ */
int
-win32_rename_replacement(const wchar_t *oldpath, const wchar_t *newpath)
+win32_rename_replacement(const wchar_t *srcpath, const wchar_t *dstpath)
{
- if (MoveFileExW(oldpath, newpath, MOVEFILE_REPLACE_EXISTING)) {
- return 0;
- } else {
- set_errno_from_GetLastError();
- return -1;
- }
-}
+ wchar_t *tmpname;
-/* Replacement for POSIX fnmatch() (partial functionality only) */
-int
-fnmatch(const wchar_t *pattern, const wchar_t *string, int flags)
-{
- if (PathMatchSpecW(string, pattern))
+ /* Normally, MoveFileExW() with the MOVEFILE_REPLACE_EXISTING flag does
+ * what we want. */
+
+ if (MoveFileExW(srcpath, dstpath, MOVEFILE_REPLACE_EXISTING))
return 0;
- else
- return FNM_NOMATCH;
-}
-/* truncate() replacement */
-int
-win32_truncate_replacement(const wchar_t *path, off_t size)
-{
- DWORD err = NO_ERROR;
- LARGE_INTEGER liOffset;
+ /* MoveFileExW() failed. One way this can happen is if any process has
+ * the destination file open, in which case ERROR_ACCESS_DENIED is
+ * produced. This can commonly happen if there is a backup or antivirus
+ * program monitoring or scanning the files. This behavior is very
+ * different from the behavior of POSIX rename(), which simply unlinks
+ * the destination file and allows other processes to keep it open! */
- HANDLE h = win32_open_existing_file(path, GENERIC_WRITE);
- if (h == INVALID_HANDLE_VALUE)
- goto fail;
+ if (GetLastError() != ERROR_ACCESS_DENIED)
+ goto err_set_errno;
+
+ /* We can work around the above-mentioned problem by renaming the
+ * destination file to yet another temporary file, then "deleting" it,
+ * which on Windows will in fact not actually delete it immediately but
+ * rather mark it for deletion when the last handle to it is closed. */
+ {
+ static const wchar_t orig_suffix[5] = L".orig";
+ const size_t num_rand_chars = 9;
+ wchar_t *p;
+
+ size_t dstlen = wcslen(dstpath);
+
+ tmpname = alloca(sizeof(wchar_t) *
+ (dstlen + ARRAY_LEN(orig_suffix) + num_rand_chars + 1));
+ p = tmpname;
+ p = wmempcpy(p, dstpath, dstlen);
+ p = wmempcpy(p, orig_suffix, ARRAY_LEN(orig_suffix));
+ get_random_alnum_chars(p, num_rand_chars);
+ p += num_rand_chars;
+ *p = L'\0';
+ }
+
+ if (!MoveFile(dstpath, tmpname))
+ goto err_set_errno;
+
+ if (!DeleteFile(tmpname)) {
+ set_errno_from_GetLastError();
+ WARNING_WITH_ERRNO("Failed to delete original file "
+ "(moved to \"%ls\")", tmpname);
+ }
- liOffset.QuadPart = size;
- if (!SetFilePointerEx(h, liOffset, NULL, FILE_BEGIN))
- goto fail_close_handle;
+ if (!MoveFile(srcpath, dstpath)) {
+ set_errno_from_GetLastError();
+ WARNING_WITH_ERRNO("Atomic semantics not respected in "
+ "failed rename() (new file is at \"%ls\")",
+ srcpath);
+ return 1;
+ }
- if (!SetEndOfFile(h))
- goto fail_close_handle;
- CloseHandle(h);
return 0;
-fail_close_handle:
- err = GetLastError();
- CloseHandle(h);
-fail:
- if (err == NO_ERROR)
- err = GetLastError();
- set_errno_from_win32_error(err);
+err_set_errno:
+ set_errno_from_GetLastError();
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
+int
win32_strerror_r_replacement(int errnum, wchar_t *buf, size_t buflen)
{
static pthread_mutex_t strerror_lock = PTHREAD_MUTEX_INITIALIZER;
return 0;
}
+#define MAX_IO_AMOUNT 1048576
+
static int
do_pread_or_pwrite(int fd, void *buf, size_t count, off_t offset,
bool is_pwrite)
{
HANDLE h;
LARGE_INTEGER orig_offset;
- DWORD bytes_read_or_written;
+ DWORD result = 0xFFFFFFFF;
LARGE_INTEGER relative_offset;
OVERLAPPED overlapped;
BOOL bret;
+ DWORD err = 0;
h = (HANDLE)_get_osfhandle(fd);
if (h == INVALID_HANDLE_VALUE)
- goto err;
+ goto error;
if (GetFileType(h) == FILE_TYPE_PIPE) {
errno = ESPIPE;
- goto err;
+ goto error;
}
/* Get original position */
relative_offset.QuadPart = 0;
- if (!SetFilePointerEx(h, relative_offset, &orig_offset, FILE_CURRENT))
- goto err_set_errno;
+ if (!SetFilePointerEx(h, relative_offset, &orig_offset, FILE_CURRENT)) {
+ err = GetLastError();
+ win32_error(err, L"Failed to get original file position");
+ goto error;
+ }
memset(&overlapped, 0, sizeof(overlapped));
overlapped.Offset = offset;
overlapped.OffsetHigh = offset >> 32;
/* Do the read or write at the specified offset */
+ count = min(count, MAX_IO_AMOUNT);
+ SetLastError(0);
if (is_pwrite)
- bret = WriteFile(h, buf, count, &bytes_read_or_written, &overlapped);
+ bret = WriteFile(h, buf, count, &result, &overlapped);
else
- bret = ReadFile(h, buf, count, &bytes_read_or_written, &overlapped);
- if (!bret)
- goto err_set_errno;
+ bret = ReadFile(h, buf, count, &result, &overlapped);
+ if (!bret) {
+ err = GetLastError();
+ win32_error(err, L"Failed to %s %zu bytes at offset %"PRIu64,
+ (is_pwrite ? "write" : "read"), count, offset);
+ goto error;
+ }
+
+ wimlib_assert(result <= count);
/* Restore the original position */
- if (!SetFilePointerEx(h, orig_offset, NULL, FILE_BEGIN))
- goto err_set_errno;
+ if (!SetFilePointerEx(h, orig_offset, NULL, FILE_BEGIN)) {
+ err = GetLastError();
+ win32_error(err, L"Failed to restore file position to %"PRIu64,
+ offset);
+ goto error;
+ }
- return bytes_read_or_written;
-err_set_errno:
- set_errno_from_GetLastError();
-err:
+ return result;
+
+error:
+ if (err)
+ set_errno_from_win32_error(err);
return -1;
}
* offset, so it is not safe to use with readers/writers on the same file
* descriptor. */
ssize_t
-pread(int fd, void *buf, size_t count, off_t offset)
+win32_pread(int fd, void *buf, size_t count, off_t offset)
{
return do_pread_or_pwrite(fd, buf, count, offset, false);
}
* offset, so it is not safe to use with readers/writers on the same file
* descriptor. */
ssize_t
-pwrite(int fd, const void *buf, size_t count, off_t offset)
+win32_pwrite(int fd, const void *buf, size_t count, off_t offset)
{
return do_pread_or_pwrite(fd, (void*)buf, count, offset, true);
}
-/* Dumb Windows implementation of writev(). It writes the vectors one at a
- * time. */
-ssize_t writev(int fd, const struct iovec *iov, int iovcnt)
+/* Replacement for read() which doesn't hide the Win32 error code */
+ssize_t
+win32_read(int fd, void *buf, size_t count)
{
- ssize_t total_bytes_written = 0;
+ HANDLE h = (HANDLE)_get_osfhandle(fd);
+ DWORD result = 0xFFFFFFFF;
- if (iovcnt <= 0) {
- errno = EINVAL;
+ if (h == INVALID_HANDLE_VALUE)
+ return -1;
+
+ count = min(count, MAX_IO_AMOUNT);
+ SetLastError(0);
+ if (!ReadFile(h, buf, count, &result, NULL)) {
+ DWORD err = GetLastError();
+ win32_error(err,
+ L"Error reading %zu bytes from fd %d", count, fd);
+ set_errno_from_win32_error(err);
return -1;
}
- for (int i = 0; i < iovcnt; i++) {
- ssize_t bytes_written;
-
- bytes_written = write(fd, iov[i].iov_base, iov[i].iov_len);
- if (bytes_written >= 0)
- total_bytes_written += bytes_written;
- if (bytes_written != iov[i].iov_len) {
- if (total_bytes_written == 0)
- total_bytes_written = -1;
- break;
- }
+
+ wimlib_assert(result <= count);
+ return result;
+}
+
+/* Replacement for write() which doesn't hide the Win32 error code */
+ssize_t
+win32_write(int fd, const void *buf, size_t count)
+{
+ HANDLE h = (HANDLE)_get_osfhandle(fd);
+ DWORD result = 0xFFFFFFFF;
+
+ if (h == INVALID_HANDLE_VALUE)
+ return -1;
+
+ count = min(count, MAX_IO_AMOUNT);
+ SetLastError(0);
+ if (!WriteFile(h, buf, count, &result, NULL)) {
+ DWORD err = GetLastError();
+ win32_error(err,
+ L"Error writing %zu bytes to fd %d", count, fd);
+ set_errno_from_win32_error(err);
+ return -1;
}
- return total_bytes_written;
+
+ wimlib_assert(result <= count);
+ return result;
}
+/* Replacement for glob() in Windows native builds that operates on wide
+ * characters. */
int
-win32_get_file_and_vol_ids(const wchar_t *path, u64 *ino_ret, u64 *dev_ret)
+win32_wglob(const wchar_t *pattern, int flags,
+ int (*errfunc)(const wchar_t *epath, int eerrno),
+ glob_t *pglob)
{
- HANDLE h;
- BY_HANDLE_FILE_INFORMATION file_info;
- int ret;
+ WIN32_FIND_DATAW dat;
DWORD err;
+ HANDLE hFind;
+ int ret;
+ size_t nspaces;
+ int errno_save;
- h = win32_open_existing_file(path, FILE_READ_ATTRIBUTES);
- if (h == INVALID_HANDLE_VALUE) {
- ret = WIMLIB_ERR_OPEN;
- goto out;
- }
+ const wchar_t *backslash, *end_slash;
+ size_t prefix_len;
+
+ backslash = wcsrchr(pattern, L'\\');
+ end_slash = wcsrchr(pattern, L'/');
- if (!GetFileInformationByHandle(h, &file_info)) {
- ret = WIMLIB_ERR_STAT;
- } else {
- *ino_ret = ((u64)file_info.nFileIndexHigh << 32) |
- (u64)file_info.nFileIndexLow;
- *dev_ret = file_info.dwVolumeSerialNumber;
- ret = 0;
+ if (backslash > end_slash)
+ end_slash = backslash;
+
+ if (end_slash)
+ prefix_len = end_slash - pattern + 1;
+ else
+ prefix_len = 0;
+
+ /* This function does not support all functionality of the POSIX glob(),
+ * so make sure the parameters are consistent with supported
+ * functionality. */
+ wimlib_assert(errfunc == NULL);
+ wimlib_assert((flags & GLOB_ERR) == GLOB_ERR);
+ wimlib_assert((flags & ~(GLOB_NOSORT | GLOB_ERR)) == 0);
+
+ hFind = FindFirstFileW(pattern, &dat);
+ if (hFind == INVALID_HANDLE_VALUE) {
+ err = GetLastError();
+ if (err == ERROR_FILE_NOT_FOUND) {
+ errno = 0;
+ return GLOB_NOMATCH;
+ } else {
+ set_errno_from_win32_error(err);
+ return GLOB_ABORTED;
+ }
}
+ pglob->gl_pathc = 0;
+ pglob->gl_pathv = NULL;
+ nspaces = 0;
+ do {
+ wchar_t *path;
+ if (pglob->gl_pathc == nspaces) {
+ size_t new_nspaces;
+ wchar_t **pathv;
+
+ new_nspaces = nspaces * 2 + 1;
+ pathv = REALLOC(pglob->gl_pathv,
+ new_nspaces * sizeof(pglob->gl_pathv[0]));
+ if (!pathv)
+ goto oom;
+ pglob->gl_pathv = pathv;
+ nspaces = new_nspaces;
+ }
+ size_t filename_len = wcslen(dat.cFileName);
+ size_t len_needed = prefix_len + filename_len;
+
+ path = MALLOC((len_needed + 1) * sizeof(wchar_t));
+ if (!path)
+ goto oom;
+
+ wmemcpy(path, pattern, prefix_len);
+ wmemcpy(path + prefix_len, dat.cFileName, filename_len + 1);
+ pglob->gl_pathv[pglob->gl_pathc++] = path;
+ } while (FindNextFileW(hFind, &dat));
err = GetLastError();
- CloseHandle(h);
- SetLastError(err);
-out:
- set_errno_from_GetLastError();
+ CloseHandle(hFind);
+ if (err != ERROR_NO_MORE_FILES) {
+ set_errno_from_win32_error(err);
+ ret = GLOB_ABORTED;
+ goto fail_globfree;
+ }
+ return 0;
+
+oom:
+ CloseHandle(hFind);
+ errno = ENOMEM;
+ ret = GLOB_NOSPACE;
+fail_globfree:
+ errno_save = errno;
+ globfree(pglob);
+ errno = errno_save;
return ret;
}
+void
+globfree(glob_t *pglob)
+{
+ size_t i;
+ for (i = 0; i < pglob->gl_pathc; i++)
+ FREE(pglob->gl_pathv[i]);
+ FREE(pglob->gl_pathv);
+}
+
+/* Replacement for fopen(path, "a") that doesn't prevent other processes from
+ * reading the file */
+FILE *
+win32_open_logfile(const wchar_t *path)
+{
+ HANDLE h;
+ int fd;
+ FILE *fp;
+
+ h = CreateFile(path, FILE_APPEND_DATA, FILE_SHARE_VALID_FLAGS,
+ NULL, OPEN_ALWAYS, 0, NULL);
+ if (h == INVALID_HANDLE_VALUE)
+ return NULL;
+
+ fd = _open_osfhandle((intptr_t)h, O_APPEND);
+ if (fd < 0) {
+ CloseHandle(h);
+ return NULL;
+ }
+
+ fp = fdopen(fd, "a");
+ if (!fp) {
+ close(fd);
+ return NULL;
+ }
+
+ return fp;
+}
+
+#define RtlGenRandom SystemFunction036
+BOOLEAN WINAPI RtlGenRandom(PVOID RandomBuffer, ULONG RandomBufferLength);
+
+/*
+ * Generate @n cryptographically secure random bytes (thread-safe)
+ *
+ * This is the Windows version. It uses RtlGenRandom() (actually called
+ * SystemFunction036) from advapi32.dll.
+ */
+void
+get_random_bytes(void *p, size_t n)
+{
+ while (n != 0) {
+ u32 count = min(n, UINT32_MAX);
+
+ if (!RtlGenRandom(p, count)) {
+ win32_error(GetLastError(),
+ L"RtlGenRandom() failed (count=%u)", count);
+ wimlib_assert(0);
+ count = 0;
+ }
+ p += count;
+ n -= count;
+ }
+}
+
+/* Retrieve the current time as a WIM timestamp. */
+u64
+now_as_wim_timestamp(void)
+{
+ FILETIME ft;
+
+ GetSystemTimeAsFileTime(&ft);
+
+ return ((u64)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
+}
#endif /* __WIN32__ */
git://wimlib.net / wimlib / blobdiff