Misono Tomohiro bdfd667883 virtiofsd: Fix xattr operations ... Current virtiofsd has problems about xattr operations and they does not work properly for directory/symlink/special file. The fundamental cause is that virtiofsd uses openat() + f...xattr() systemcalls for xattr operation but we should not open symlink/special file in the daemon. Therefore the function is restricted. Fix this problem by: 1. during setup of each thread, call unshare(CLONE_FS) 2. in xattr operations (i.e. lo_getxattr), if inode is not a regular file or directory, use fchdir(proc_loot_fd) + ...xattr() + fchdir(root.fd) instead of openat() + f...xattr() (Note: for a regular file/directory openat() + f...xattr() is still used for performance reason) With this patch, xfstests generic/062 passes on virtiofs. This fix is suggested by Miklos Szeredi and Stefan Hajnoczi. The original discussion can be found here: https://www.redhat.com/archives/virtio-fs/2019-October/msg00046.html Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Message-Id: <20200227055927.24566-3-misono.tomohiro@jp.fujitsu.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>		2020-03-03 15:13:24 +00:00
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50-qemu-virtiofsd.json.in	virtiofsd: add vhost-user.json file	2020-01-23 16:41:36 +00:00
buffer.c	virtiofsd: use fuse_buf_writev to replace fuse_buf_write for better performance	2020-01-23 16:41:37 +00:00
fuse_common.h	virtiofsd: Parse flag FUSE_WRITE_KILL_PRIV	2020-01-23 16:41:37 +00:00
fuse_i.h	virtiofsd: Remove fuse.h and struct fuse_module	2020-02-21 12:53:17 +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	tools/virtiofsd/fuse_lowlevel: Fix fuse_out_header::error value	2020-02-21 12:53:17 +00:00
fuse_lowlevel.h	virtiofsd: Remove fuse_req_getgroups	2020-02-10 17:24:43 +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: convert more fprintf and perror to use fuse log infra	2020-01-23 16:41:37 +00:00
fuse_virtio.c	virtiofsd: Fix xattr operations	2020-03-03 15:13:24 +00:00
fuse_virtio.h	virtiofsd: cleanup allocated resource in se	2020-01-23 16:41:37 +00:00
helper.c	virtiofsd: Help message fix for 'seconds'	2020-02-21 12:53:17 +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: Fix xattr operations	2020-03-03 15:13:24 +00:00
seccomp.c	virtiofsd: Fix xattr operations	2020-03-03 15:13:24 +00:00
seccomp.h	virtiofsd: add --syslog command-line option	2020-01-23 16:41:37 +00:00