kernel.git/fs/fuse/inode.c, branch linux-3.18.y

fuse: don't keep dead fuse_conn at fuse_fill_super().

2018-07-03T09:18:45Z

commit 543b8f8662fe6d21f19958b666ab0051af9db21a upstream. syzbot is reporting use-after-free at fuse_kill_sb_blk() [1]. Since sb->s_fs_info field is not cleared after fc was released by fuse_conn_put() when initialization failed, fuse_kill_sb_blk() finds already released fc and tries to hold the lock. Fix this by clearing sb->s_fs_info field after calling fuse_conn_put(). [1] https://syzkaller.appspot.com/bug?id=a07a680ed0a9290585ca424546860464dd9658db Signed-off-by: Tetsuo Handa Reported-by: syzbot Fixes: 3b463ae0c626 ("fuse: invalidation reverse calls") Cc: John Muir Cc: Csaba Henk Cc: Anand Avati Cc: # v2.6.31 Signed-off-by: Miklos Szeredi Signed-off-by: Greg Kroah-Hartman

fuse: fix wrong assignment of ->flags in fuse_send_init()

2016-08-22T16:23:23Z

[ Upstream commit 9446385f05c9af25fed53dbed3cc75763730be52 ] FUSE_HAS_IOCTL_DIR should be assigned to ->flags, it may be a typo. Signed-off-by: Wei Fang Signed-off-by: Miklos Szeredi Fixes: 69fe05c90ed5 ("fuse: add missing INIT flags") Cc: Signed-off-by: Sasha Levin

fuse: initialize fc->release before calling it

2015-07-05T14:12:55Z

[ Upstream commit 0ad0b3255a08020eaf50e34ef0d6df5bdf5e09ed ] fc->release is called from fuse_conn_put() which was used in the error cleanup before fc->release was initialized. [Jeremiah Mahler : assign fc->release after calling fuse_conn_init(fc) instead of before.] Signed-off-by: Miklos Szeredi Fixes: a325f9b92273 ("fuse: update fuse_conn_init() and separate out fuse_conn_kill()") Cc: #v2.6.31+ Signed-off-by: Sasha Levin

fuse: add FUSE_NO_OPEN_SUPPORT flag to INIT

2014-07-22T14:37:43Z

Here some additional changes to set a capability flag so that clients can detect when it's appropriate to return -ENOSYS from open. This amends the following commit introduced in 3.14: 7678ac50615d fuse: support clients that don't implement 'open' However we can only add the flag to 3.15 and later since there was no protocol version update in 3.14. Signed-off-by: Miklos Szeredi Cc: # v3.15+

fuse: s_time_gran fix

2014-07-22T14:37:42Z

Default s_time_gran is 1, don't overwrite that if userspace didn't explicitly specify one. Signed-off-by: Miklos Szeredi Cc: # v3.15+

fuse: handle large user and group ID

2014-07-07T13:28:51Z

If the number in "user_id=N" or "group_id=N" mount options was larger than INT_MAX then fuse returned EINVAL. Fix this to handle all valid uid/gid values. Signed-off-by: Miklos Szeredi Cc: stable@vger.kernel.org

fuse: inode: drop cast

2014-07-07T13:28:51Z

This patch removes the cast on data of type void * as it is not needed. The following Coccinelle semantic patch was used for making the change: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T *)x)->f | - (T *) e ) Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Miklos Szeredi

fuse: clear MS_I_VERSION

2014-04-28T12:19:25Z

Fuse doesn't support i_version (yet). Signed-off-by: Miklos Szeredi

fuse: trust kernel i_ctime only

2014-04-28T12:19:24Z

Let the kernel maintain i_ctime locally: update i_ctime explicitly on truncate, fallocate, open(O_TRUNC), setxattr, removexattr, link, rename, unlink. The inode flag I_DIRTY_SYNC serves as indication that local i_ctime should be flushed to the server eventually. The patch sets the flag and updates i_ctime in course of operations listed above. Signed-off-by: Maxim Patlasov Signed-off-by: Miklos Szeredi

fuse: fuse: add time_gran to INIT_OUT

2014-04-28T12:19:23Z

Allow userspace fs to specify time granularity. This is needed because with writeback_cache mode the kernel is responsible for generating mtime and ctime, but if the underlying filesystem doesn't support nanosecond granularity then the cache will contain a different value from the one stored on the filesystem resulting in a change of times after a cache flush. Make the default granularity 1s. Signed-off-by: Miklos Szeredi