Cleanup of mount doesn't work the way it was envisioned, because the
kernel doesn't follow mounts on the umount() call, hence it will find
a non-mounted directory.
Miklos Szeredi [Wed, 2 Feb 2011 11:18:38 +0000 (12:18 +0100)]
libfuse: fuse_session_loop_mt() shouldn't pause when exiting worker threads
In fuse_session_loop_mt() don't pause when exiting the worker threads.
The pause() was added in 2.2.1 to prevent segfault on pthread_cancel()
on an exited, detached thread. Now worker threads are not detached
and pthread_cancel() should work fine even after the thread exited.
Reported by Boris Protopopov
Miklos Szeredi [Wed, 10 Nov 2010 10:45:50 +0000 (11:45 +0100)]
fusexmp_fh: add read_buf and write_buf implementations
In fusexmp_fh implement the ->read_buf() and ->write_buf() methods.
Leave the ->read() and ->write() implementations for reference, even
though they are not necessary.
Miklos Szeredi [Wed, 10 Nov 2010 10:41:21 +0000 (11:41 +0100)]
fuse_buf_copy: check if buffers are the same
When copying fuse buffers, check if the source and destination are the
same and omit the copy as appropriate. Also check if the source and
destination memory regions overlap and use memmove in that case.
Miklos Szeredi [Wed, 10 Nov 2010 10:41:21 +0000 (11:41 +0100)]
store fuse_buf inside fuse_bufvec
Store the first fuse_buf inside fuse_bufvec. This makes
initialization of fuse_bufvec simpler for the common case of a single
fuse_buf. If multiple fuse_buf's are needed then fuse_bufvec needs to
be dynamically allocated.
Miklos Szeredi [Mon, 8 Nov 2010 16:11:46 +0000 (17:11 +0100)]
libfuse: support zero copy writes in lowlevel interface
Add new ->write_buf() method to low level interface. This
allows passig a generic buffer, either containing a memory buffer
or a file descriptor. This allows implementing zero copy writes.
Add fuse_session_receive_buf() and fuse_session_process_buf()
which may be used in event loop implementations to replace
fuse_chan_recv() and fuse_session_process() respectively.
Miklos Szeredi [Mon, 8 Nov 2010 15:00:16 +0000 (16:00 +0100)]
update umount procedure
If umount(8) supports --fake and --no-canonicalize (util-linux-ng
version 2.18 or later), and umount(2) supports the UMOUNT_NOFOLLOW
flag (linux kernel version 2.6.35 or later) then, "fusermount -u" will
call the umount(2) system call and use "umount --fake ..." to update
/etc/mtab
Added --disable-legacy-umount option to configure. This disables the
runtime checking of umount(8) version. When built with this option
then "fusermount -u" will fail if umount(8) doesn't support the --fake
and --no-canonicalize options.
Add missing argument check in ulockmgr.c to prevent calling
ulockmgr_server with illegal arguments. This would cause an ever growing
list of ulockmgr_server processes with an endless list of open files which
finally exceeds the open file handle limit.
It appears samba is sometimes calling flock with illegal / weired values.
If the "fsname=" option contained a comma then the option parser in
fusermount was confused (Novell bugzilla #641480). Fix by escaping
commas when passing them over to fusermount.
Miklos Szeredi [Fri, 27 Aug 2010 15:16:54 +0000 (17:16 +0200)]
Add NetBSD support
The bulk of it is just about adding ifdef __NetBSD__ where there is
already an ifdef __FreeBSD__
Add a arch=netbsd to deal with NetBSD specifics. I suggests that
arch=bsd could be renamed to arch=freebsd
NetBSD specific linking with -lperfuse
NetBSD patches to lib/mount.c. It turned to be less itrusive to patch
mount;c than mount_bsd.c. I suggest mount_bsd.c could be renamed to
mount_freebsd.c
Add a generic buffer interface for use with I/O. Buffer vectors are
supplied and each buffer in the vector may be a memory pointer or a
file descriptor.
The fuse_reply_fd() interface is converted to using buffers.
Miklos Szeredi [Tue, 15 Jun 2010 17:55:37 +0000 (17:55 +0000)]
* Add a nopath option and flag, indicating that path argument
need not be calculated for the following operations: read, write,
flush, release, fsync, readdir, releasedir, fsyncdir, ftruncate,
fgetattr, lock, ioctl and poll.
Miklos Szeredi [Mon, 1 Feb 2010 14:52:30 +0000 (14:52 +0000)]
* Released 2.8.3
* Using --no-canonicalize with umount(8) conflicts with the race
fix, sinceit assumes the supplied path is absolute, while the race
fix relies on the path being relative to the current directory
Miklos Szeredi [Wed, 23 Dec 2009 12:51:40 +0000 (12:51 +0000)]
* Use '--no-canonicalize' option of mount(8) (available in
util-linux-ng version 2.17 or greater) to avoid calling
readling(2) on the newly mounted filesystem before the mount
procedure is finished. This has caused a deadlock if audit was
enabled in the kernel. Also use '--no-canonicalize' for umount to
avoid touching the mounted filesystem.
* Clarify how the protocol version should be negotiated between
kernel and userspace. Notably libfuse didn't correctly handle the
case when the supported major versions didn't match
* The context is extended with a 'umask' field. The umask is sent
for mknod, mkdir and create requests by linux kernel version
2.6.31 or later, otherwise the umask is set to zero. Also
introduce a new feature flag: FUSE_CAP_DONT_MASK. If the kernel
supports this feature, then this flag will be set in conn->capable
in the ->init() method. If the filesystem sets this flag in in
conn->want, then the create modes will not be masked.
* Add low level interfaces for lookup cache and attribute
invalidation. This feature is available in linux kernels 2.6.31
or later. Patch by John Muir
Miklos Szeredi [Fri, 19 Jun 2009 10:27:38 +0000 (10:27 +0000)]
Add fuse_getgroups (high level lib) and fuse_req_getgroups (low
level lib) functions to query the supplementary group IDs for the
current request. Currently this is implemented on Linux by
reading from the /proc filesystem.
Miklos Szeredi [Fri, 5 Dec 2008 10:55:36 +0000 (10:55 +0000)]
* Implement ioctl support. On high level interface only
"restricted" ioctls are supported (which are defined with the
_IO(), _IOR(), _IOW() or _IOWR() macros). Unrestricted ioctls
will only be allwed to CUSE (Character Device in Userspace)
servers. Patch by Tejun Heo
Miklos Szeredi [Thu, 16 Oct 2008 19:11:28 +0000 (19:11 +0000)]
* Allow commas in options to be escaped with a backslash * Add new function: fuse_opt_add_opt_escaped() * Add missing fuse_reply_bmap() to the version script