# include "config.h"
#endif
+#ifdef __WIN32__
+# include "wimlib/win32_common.h" /* For GetFullPathName() */
+#endif
+
#include "wimlib/apply.h"
#include "wimlib/dentry.h"
#include "wimlib/encoding.h"
#include <sys/stat.h>
#include <unistd.h>
+#define MAX_LONG_PATH_WARNINGS 5
+
static int
do_apply_op(struct wim_dentry *dentry, struct apply_args *args,
int (*apply_dentry_func)(const tchar *, size_t,
size_t extraction_path_nchars;
struct wim_dentry *d;
LIST_HEAD(ancestor_list);
+ const tchar *target;
+ size_t target_nchars;
- extraction_path_nchars = args->target_nchars;
+#ifdef __WIN32__
+ if (args->target_lowlevel_path) {
+ target = args->target_lowlevel_path;
+ target_nchars = args->target_lowlevel_path_nchars;
+ } else
+#endif
+ {
+ target = args->target;
+ target_nchars = args->target_nchars;
+ }
+
+ extraction_path_nchars = target_nchars;
for (d = dentry; d != args->extract_root; d = d->parent) {
if (d->not_extracted)
}
tchar extraction_path[extraction_path_nchars + 1];
- p = tmempcpy(extraction_path, args->target, args->target_nchars);
+ p = tmempcpy(extraction_path, target, target_nchars);
+
list_for_each_entry(d, &ancestor_list, tmp_list) {
*p++ = OS_PREFERRED_PATH_SEPARATOR;
p = tmempcpy(p, d->extraction_name, d->extraction_name_nchars);
}
*p = T('\0');
+
+#ifdef __WIN32__
+ /* Warn the user if the path exceeds MAX_PATH */
+
+ /* + 1 for '\0', -4 for \\?\. */
+ if (extraction_path_nchars + 1 - 4 > MAX_PATH) {
+ if (dentry->needs_extraction &&
+ args->num_long_paths < MAX_LONG_PATH_WARNINGS)
+ {
+ WARNING("Path \"%ls\" exceeds MAX_PATH and will not be accessible "
+ "to most Windows software", extraction_path);
+ if (++args->num_long_paths == MAX_LONG_PATH_WARNINGS)
+ WARNING("Suppressing further warnings about long paths");
+ }
+ }
+#endif
return (*apply_dentry_func)(extraction_path, extraction_path_nchars,
dentry, args);
}
memset(&args, 0, sizeof(args));
+
args.w = wim;
args.target = target;
+ args.target_nchars = tstrlen(target);
args.extract_flags = extract_flags;
args.progress_func = progress_func;
- args.target_nchars = tstrlen(target);
+
+#ifdef __WIN32__
+ /* Work around defective behavior in Windows where paths longer than 260
+ * characters are not supported by default; instead they need to be
+ * turned into absolute paths and prefixed with "\\?\". */
+ args.target_lowlevel_path = MALLOC(32768 * sizeof(wchar_t));
+ if (!args.target_lowlevel_path)
+ {
+ ret = WIMLIB_ERR_NOMEM;
+ goto out;
+ }
+ args.target_lowlevel_path[0] = L'\\';
+ args.target_lowlevel_path[1] = L'\\';
+ args.target_lowlevel_path[2] = L'?';
+ args.target_lowlevel_path[3] = L'\\';
+ args.target_lowlevel_path_nchars =
+ GetFullPathName(args.target, 32768 - 4,
+ &args.target_lowlevel_path[4], NULL);
+
+ if (args.target_lowlevel_path_nchars == 0 ||
+ args.target_lowlevel_path_nchars >= 32768 - 4)
+ {
+ WARNING("Can't get full path name for \"%ls\"", args.target);
+ FREE(args.target_lowlevel_path);
+ args.target_lowlevel_path = NULL;
+ } else {
+ args.target_lowlevel_path_nchars += 4;
+ }
+#endif
if (progress_func) {
args.progress.extract.wimfile_name = wim->filename;
ERROR_WITH_ERRNO("Failed to mount NTFS volume `%"TS"'",
target);
ret = WIMLIB_ERR_NTFS_3G;
- goto out;
+ goto out_free_target_lowlevel_path;
}
ops = &ntfs_apply_operations;
} else
}
}
#endif
+out_free_target_lowlevel_path:
+#ifdef __WIN32__
+ FREE(args.target_lowlevel_path);
+#endif
out:
return ret;
}