Stefan Hajnoczi c241aa9457 virtiofsd: introduce inode refcount to prevent use-after-free ... If thread A is using an inode it must not be deleted by thread B when processing a FUSE_FORGET request. The FUSE protocol itself already has a counter called nlookup that is used in FUSE_FORGET messages. We cannot trust this counter since the untrusted client can manipulate it via FUSE_FORGET messages. Introduce a new refcount to keep inodes alive for the required lifespan. lo_inode_put() must be called to release a reference. FUSE's nlookup counter holds exactly one reference so that the inode stays alive as long as the client still wants to remember it. Note that the lo_inode->is_symlink field is moved to avoid creating a hole in the struct due to struct field alignment. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Reviewed-by: Sergio Lopez <slp@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>		2020-01-23 16:41:37 +00:00
..
50-qemu-virtiofsd.json.in	virtiofsd: add vhost-user.json file	2020-01-23 16:41:36 +00:00
buffer.c	virtiofsd: add fuse_mbuf_iter API	2020-01-23 16:41:36 +00:00
fuse_common.h	virtiofsd: Parse flag FUSE_WRITE_KILL_PRIV	2020-01-23 16:41:37 +00:00
fuse_i.h	virtiofsd: Plumb fuse_bufvec through to do_write_buf	2020-01-23 16:41:36 +00:00
fuse_log.c	virtiofsd: Fix common header and define for QEMU builds	2020-01-23 16:41:36 +00:00
fuse_log.h	virtiofsd: Format imported files to qemu style	2020-01-23 16:41:36 +00:00
fuse_lowlevel.c	virtiofsd: use fuse_lowlevel_is_virtio() in fuse_session_destroy()	2020-01-23 16:41:37 +00:00
fuse_lowlevel.h	virtiofsd: print log only when priority is high enough	2020-01-23 16:41:37 +00:00
fuse_misc.h	virtiofsd: support nanosecond resolution for file timestamp	2020-01-23 16:41:37 +00:00
fuse_opt.c	virtiofsd: Fix common header and define for QEMU builds	2020-01-23 16:41:36 +00:00
fuse_opt.h	virtiofsd: Format imported files to qemu style	2020-01-23 16:41:36 +00:00
fuse_signals.c	virtiofsd: Fix common header and define for QEMU builds	2020-01-23 16:41:36 +00:00
fuse_virtio.c	virtiofsd: prevent fv_queue_thread() vs virtio_loop() races	2020-01-23 16:41:37 +00:00
fuse_virtio.h	virtiofsd: cleanup allocated resource in se	2020-01-23 16:41:37 +00:00
fuse.h	virtiofsd: Format imported files to qemu style	2020-01-23 16:41:36 +00:00
helper.c	virtiofsd: Support remote posix locks	2020-01-23 16:41:37 +00:00
Makefile.objs	virtiofsd: add seccomp whitelist	2020-01-23 16:41:37 +00:00
passthrough_helpers.h	virtiofsd: Format imported files to qemu style	2020-01-23 16:41:36 +00:00
passthrough_ll.c	virtiofsd: introduce inode refcount to prevent use-after-free	2020-01-23 16:41:37 +00:00
seccomp.c	virtiofsd: add --syslog command-line option	2020-01-23 16:41:37 +00:00
seccomp.h	virtiofsd: add --syslog command-line option	2020-01-23 16:41:37 +00:00