diff options
Diffstat (limited to 'winsup/cygwin/syscalls.cc')
| -rw-r--r-- | winsup/cygwin/syscalls.cc | 57 |
1 files changed, 53 insertions, 4 deletions
diff --git a/winsup/cygwin/syscalls.cc b/winsup/cygwin/syscalls.cc index 079775657..d76960829 100644 --- a/winsup/cygwin/syscalls.cc +++ b/winsup/cygwin/syscalls.cc @@ -915,19 +915,68 @@ fsync (int fd) syscall_printf ("-1 = fsync (%d)", fd); return -1; } + return cfd->fsync (); +} - if (FlushFileBuffers (cfd->get_handle ()) == 0) +static void +sync_worker (const char *vol) +{ + HANDLE fh = CreateFileA (vol, GENERIC_WRITE, wincap.shared (), + &sec_none_nih, OPEN_EXISTING, 0, NULL); + if (fh != INVALID_HANDLE_VALUE) { - __seterrno (); - return -1; + FlushFileBuffers (fh); + CloseHandle (fh); } - return 0; + else + debug_printf ("Open failed with %E"); } /* sync: SUSv3 */ extern "C" void sync () { + char vol[CYG_MAX_PATH]; + + if (wincap.has_guid_volumes ()) /* Win2k and newer */ + { + HANDLE sh = FindFirstVolumeA (vol, CYG_MAX_PATH); + if (sh != INVALID_HANDLE_VALUE) + { + do + { + char pvol[CYG_MAX_PATH]; + DWORD len; + if (GetVolumePathNamesForVolumeNameA (vol, pvol, CYG_MAX_PATH, + &len)) + debug_printf ("Try volume %s (GUID: %s)", pvol, vol); + else + debug_printf ("Try volume %s", vol); + + /* Eliminate trailing backslash. */ + vol[strlen (vol) - 1] = '\0'; + sync_worker (vol); + } + while (FindNextVolumeA (sh, vol, CYG_MAX_PATH)); + FindVolumeClose (sh); + } + } + else if (wincap.is_winnt ()) /* 9x has no concept for opening volumes */ + { + DWORD drives = GetLogicalDrives (); + DWORD mask = 1; + strcpy (vol, "\\\\.\\A:"); + do + { + if (drives & mask) + { + debug_printf ("Try volume %s", vol); + sync_worker (vol); + } + vol[4]++; + } + while ((mask <<= 1) <= 1 << 25); + } } /* Cygwin internal */ |