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attempt at fixing file permission issues on windows

This commit is contained in:
Arvid Norberg 2015-03-09 06:09:50 +00:00
parent f001876700
commit 10333221bc
2 changed files with 23 additions and 20 deletions
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27
src/file.cpp
View File

@ -1257,16 +1257,6 @@ namespace libtorrent
FILE_ATTRIBUTE_HIDDEN, // hidden + executable
};
const static DWORD share_array[] =
{
// read only (no locking)
FILE_SHARE_READ | FILE_SHARE_WRITE,
// write only (no locking)
FILE_SHARE_READ,
// read/write (no locking)
FILE_SHARE_READ,
};
std::string p = convert_separators(path);
#if TORRENT_USE_UNC_PATHS
// UNC paths must be absolute
@ -1298,7 +1288,7 @@ namespace libtorrent
| ((mode & no_cache) ? FILE_FLAG_WRITE_THROUGH : 0);
handle_type handle = CreateFile_(m_path.c_str(), m.rw_mode
, (mode & lock_file) ? 0 : share_array[mode & rw_mask]
, (mode & lock_file) ? FILE_SHARE_READ : FILE_SHARE_READ | FILE_SHARE_WRITE
, 0, m.create_mode, flags, 0);
if (handle == INVALID_HANDLE_VALUE)
@ -1338,12 +1328,7 @@ namespace libtorrent
static const int mode_array[] = {O_RDONLY, O_WRONLY | O_CREAT, O_RDWR | O_CREAT};
#endif
#ifdef O_NOATIME
static const int no_atime_flag[] = {0, O_NOATIME};
#endif
handle_type handle = ::open(convert_to_native(path).c_str()
, mode_array[mode & rw_mask]
int open_mode = 0
#ifdef O_NOATIME
| ((mode & no_atime) ? O_NOATIME : 0)
#endif
@ -1353,6 +1338,10 @@ namespace libtorrent
#ifdef O_SYNC
| ((mode & no_cache) ? O_SYNC: 0)
#endif
;
handle_type handle = ::open(convert_to_native(path).c_str()
, mode_array[mode & rw_mask] | open_mode
, permissions);
#ifdef O_NOATIME
@ -1362,7 +1351,9 @@ namespace libtorrent
if (handle == -1 && (mode & no_atime) && errno == EPERM)
{
mode &= ~no_atime;
handle = ::open(path.c_str(), mode_array[mode & rw_mask], permissions);
open_mode &= ~O_NOATIME;
handle = ::open(path.c_str(), mode_array[mode & rw_mask] | open_mode
, permissions);
}
#endif
if (handle == -1)

16
src/storage.cpp
View File

@ -1281,6 +1281,7 @@ namespace libtorrent
{
bool lock_files = m_settings ? settings().get_bool(settings_pack::lock_files) : false;
if (lock_files) mode |= file::lock_file;
if (!m_allocate_files) mode |= file::sparse;
// files with priority 0 should always be sparse
@ -1297,8 +1298,19 @@ namespace libtorrent
mode |= file::no_cache;
}
return m_pool.open_file(const_cast<default_storage*>(this), m_save_path
, file, files(), mode, ec);
file_handle ret = m_pool.open_file(const_cast<default_storage*>(this)
, m_save_path, file, files(), mode, ec);
if (ec && (mode & file::lock_file))
{
// we failed to open the file and we're trying to lock it. It's
// possible we're failing because we have another handle to this
// file in use (but waiting to be closed). Just retry to open it
// without locking.
mode &= ~file::lock_file;
ret = m_pool.open_file(const_cast<default_storage*>(this)
, m_save_path, file, files(), mode, ec);
}
return ret;
}
bool default_storage::tick()