public PosixJournalWriter(StorageEnvironmentOptions options, string filename, long journalSize)
{
_options = options;
_filename = filename;
_fd = Syscall.open(filename, OpenFlags.O_WRONLY | OpenFlags.O_DSYNC | OpenFlags.O_DIRECT | OpenFlags.O_CREAT,
FilePermissions.S_IWUSR | FilePermissions.S_IRUSR);
if (_fd == -1)
{
var err = Marshal.GetLastWin32Error();
PosixHelper.ThrowLastError(err);
}
var result = Syscall.posix_fallocate(_fd, 0, (ulong)journalSize);
if (result != 0)
{
PosixHelper.ThrowLastError(result);
}
if (PosixHelper.CheckSyncDirectoryAllowed(_filename) && PosixHelper.SyncDirectory(filename) == -1)
{
var err = Marshal.GetLastWin32Error();
PosixHelper.ThrowLastError(err);
}
NumberOfAllocatedPages = (int)(journalSize / _options.PageSize);
}
public static void AllocateFileSpace(int fd, ulong size, string file)
{
int result;
int retries = 1024;
while (true)
{
result = Syscall.posix_fallocate(fd, IntPtr.Zero, (UIntPtr)size);
if (result != (int)Errno.EINTR)
{
break;
}
if (retries-- > 0)
{
throw new IOException(
"Tried too many times to call posix_fallocate, but always got EINTR, cannot retry again");
}
}
if (result == (int)Errno.ENOSPC)
{
foreach (var drive in DriveInfo.GetDrives())
{
if (file.StartsWith(drive.RootDirectory.Name))
{
throw new DiskFullException(drive, file, (long)size);
}
}
// shouldn't happen, and we can throw normally here
}
if (result != 0)
{
ThrowLastError(result, $"posix_fallocate(\"{file}\", {size})");
}
}
public PosixJournalWriter(string filename, long journalSize)
{
_filename = filename;
_fd = Syscall.open(filename, OpenFlags.O_WRONLY | OpenFlags.O_SYNC | OpenFlags.O_CREAT,
FilePermissions.ALLPERMS);
if (_fd == -1)
{
PosixHelper.ThrowLastError(Marshal.GetLastWin32Error());
}
var result = Syscall.posix_fallocate(_fd, 0, (ulong)journalSize);
if (result != 0)
{
PosixHelper.ThrowLastError(result);
}
NumberOfAllocatedPages = journalSize / AbstractPager.PageSize;
}
public static void AllocateFileSpace(int fd, ulong size)
{
int result;
int retries = 1024;
while (true)
{
result = Syscall.posix_fallocate(fd, 0, size);
if (result != (int)Errno.EINTR)
{
break;
}
if (retries-- > 0)
{
throw new IOException("Tried too many times to call posix_fallocate, but always got EINTR, cannot retry again");
}
}
if (result != 0)
{
ThrowLastError(result);
}
}
public PosixJournalWriter(StorageEnvironmentOptions options, string filename, long journalSize)
{
_options = options;
_filename = filename;
_maxNumberOfPagesPerSingleWrite = int.MaxValue / _options.PageSize;
_fd = Syscall.open(filename, OpenFlags.O_WRONLY | options.PosixOpenFlags | OpenFlags.O_CREAT,
FilePermissions.S_IWUSR | FilePermissions.S_IRUSR);
if (_fd == -1)
{
var err = Marshal.GetLastWin32Error();
PosixHelper.ThrowLastError(err, "when opening " + filename);
}
int result;
if ((options.SafePosixOpenFlags & PerPlatformValues.OpenFlags.O_DIRECT) == 0)
{
// fallocate doesn't supported, we'll use lseek instead
result = Syscall.AllocateUsingLseek(_fd, journalSize);
}
else
{
result = Syscall.posix_fallocate(_fd, IntPtr.Zero, (UIntPtr)journalSize);
}
if (result != 0)
{
PosixHelper.ThrowLastError(result, "when allocating " + filename);
}
if (PosixHelper.CheckSyncDirectoryAllowed(_filename) && PosixHelper.SyncDirectory(filename) == -1)
{
var err = Marshal.GetLastWin32Error();
PosixHelper.ThrowLastError(err, "when syncing dir for on " + filename);
}
NumberOfAllocatedPages = (int)(journalSize / _options.PageSize);
}
