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win: fix lstat reparse point without link data

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Fixes: https://github.com/libuv/libuv/issues/995
Fixes: https://github.com/nodejs/node/issues/5160
PR-URL: https://github.com/libuv/libuv/pull/996
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
This commit is contained in:
Jason Ginchereau 2016-08-13 00:12:21 -07:00 committed by Saúl Ibarra Corretgé
parent be0e24c1e8
commit 7ae4b1ad7f
1 changed files with 20 additions and 9 deletions
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29
src/win/fs.c
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@ -1088,17 +1088,28 @@ INLINE static int fs__stat_handle(HANDLE handle, uv_stat_t* statbuf) {
statbuf->st_mode = 0;
if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
statbuf->st_mode |= S_IFLNK;
if (fs__readlink_handle(handle, NULL, &statbuf->st_size) != 0)
/*
* It is possible for a file to have FILE_ATTRIBUTE_REPARSE_POINT but not have
* any link data. In that case DeviceIoControl() in fs__readlink_handle() sets
* the last error to ERROR_NOT_A_REPARSE_POINT. Then the stat result mode
* calculated below will indicate a normal directory or file, as if
* FILE_ATTRIBUTE_REPARSE_POINT was not present.
*/
if (fs__readlink_handle(handle, NULL, &statbuf->st_size) == 0) {
statbuf->st_mode |= S_IFLNK;
} else if (GetLastError() != ERROR_NOT_A_REPARSE_POINT) {
return -1;
}
}
} else if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
statbuf->st_mode |= _S_IFDIR;
statbuf->st_size = 0;
} else {
statbuf->st_mode |= _S_IFREG;
statbuf->st_size = file_info.StandardInformation.EndOfFile.QuadPart;
if (statbuf->st_mode == 0) {
if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
statbuf->st_mode |= _S_IFDIR;
statbuf->st_size = 0;
} else {
statbuf->st_mode |= _S_IFREG;
statbuf->st_size = file_info.StandardInformation.EndOfFile.QuadPart;
}
}
if (file_info.BasicInformation.FileAttributes & FILE_ATTRIBUTE_READONLY)