write_integrity_table(): Fix documented return values

[wimlib] / src / win32_replacements.c

diff --git a/src/win32_replacements.c b/src/win32_replacements.c
index c9a59bab0a90e3fd4d03aff965821362e552a487..4e9df0aee8a5a538676176fd74a3d20819222513 100644 (file)
--- a/src/win32_replacements.c
+++ b/src/win32_replacements.c
@@ -28,12 +28,14 @@
 #  include "config.h"
 #endif
 
+#include <errno.h>
 #include <pthread.h>
 #include <shlwapi.h> /* for PathMatchSpecW() */
 #include "wimlib/win32_common.h"
 
 #include "wimlib/assert.h"
 #include "wimlib/file_io.h"
+#include "wimlib/glob.h"
 #include "wimlib/error.h"
 #include "wimlib/util.h"
 
@@ -92,7 +94,7 @@ realpath(const wchar_t *path, wchar_t *resolved_path)
        }
        goto out;
 fail_win32:
-       errno = win32_error_to_errno(err);
+       set_errno_from_win32_error(err);
 out:
        return resolved_path;
 }
@@ -146,7 +148,7 @@ fail_close_handle:
 fail:
        if (err == NO_ERROR)
                err = GetLastError();
-       errno = win32_error_to_errno(err);
+       set_errno_from_win32_error(err);
        return -1;
 }
 
@@ -260,26 +262,18 @@ ssize_t writev(int fd, const struct iovec *iov, int iovcnt)
 int
 win32_get_file_and_vol_ids(const wchar_t *path, u64 *ino_ret, u64 *dev_ret)
 {
-       HANDLE hFile;
-       DWORD err;
+       HANDLE h;
        BY_HANDLE_FILE_INFORMATION file_info;
        int ret;
+       DWORD err;
 
-       hFile = win32_open_existing_file(path, FILE_READ_ATTRIBUTES);
-       if (hFile == INVALID_HANDLE_VALUE) {
-               err = GetLastError();
-               if (err != ERROR_FILE_NOT_FOUND) {
-                       WARNING("Failed to open \"%ls\" to get file "
-                               "and volume IDs", path);
-                       win32_error(err);
-               }
-               return WIMLIB_ERR_OPEN;
+       h = win32_open_existing_file(path, FILE_READ_ATTRIBUTES);
+       if (h == INVALID_HANDLE_VALUE) {
+               ret = WIMLIB_ERR_OPEN;
+               goto out;
        }
 
-       if (!GetFileInformationByHandle(hFile, &file_info)) {
-               err = GetLastError();
-               ERROR("Failed to get file information for \"%ls\"", path);
-               win32_error(err);
+       if (!GetFileInformationByHandle(h, &file_info)) {
                ret = WIMLIB_ERR_STAT;
        } else {
                *ino_ret = ((u64)file_info.nFileIndexHigh << 32) |
@@ -287,9 +281,117 @@ win32_get_file_and_vol_ids(const wchar_t *path, u64 *ino_ret, u64 *dev_ret)
                *dev_ret = file_info.dwVolumeSerialNumber;
                ret = 0;
        }
-       CloseHandle(hFile);
+       err = GetLastError();
+       CloseHandle(h);
+       SetLastError(err);
+out:
+       set_errno_from_GetLastError();
        return ret;
 }
 
+/* Replacement for glob() in Windows native builds that operates on wide
+ * characters.  */
+int
+win32_wglob(const wchar_t *pattern, int flags,
+           int (*errfunc)(const wchar_t *epath, int eerrno),
+           glob_t *pglob)
+{
+       WIN32_FIND_DATAW dat;
+       DWORD err;
+       HANDLE hFind;
+       int ret;
+       size_t nspaces;
+
+       const wchar_t *backslash, *end_slash;
+       size_t prefix_len;
+
+       backslash = wcsrchr(pattern, L'\\');
+       end_slash = wcsrchr(pattern, L'/');
+
+       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 {
+                       /* The other possible error codes for FindFirstFile()
+                        * are undocumented. */
+                       errno = EIO;
+                       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(hFind);
+       if (err == ERROR_NO_MORE_FILES) {
+               errno = 0;
+               return 0;
+       } else {
+               /* Other possible error codes for FindNextFile() are
+                * undocumented */
+               errno = EIO;
+               ret = GLOB_ABORTED;
+               goto fail_globfree;
+       }
+oom:
+       CloseHandle(hFind);
+       errno = ENOMEM;
+       ret = GLOB_NOSPACE;
+fail_globfree:
+       globfree(pglob);
+       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);
+}
 
 #endif /* __WIN32__ */