commit b8ffa3ea9edf3812e2a09e9de8f8c9ba4bf9bab9
Author: Matthew Dillon <dil...@apollo.backplane.com>
Date: Sat Feb 22 11:12:35 2020 -0800
tmpfs - Fix races in tmpfs_nrename() and tmpfs_nrmdir()
* Lock all nrename elements before checks. This is particularly
important when renaming over a file or empty directory, but other
manipulations done by this code without locks could also cause
races which result in corruption, particularly with the link count.
* Lock all nrmdir elements before checks, for the same reason.
Summary of changes:
sys/vfs/tmpfs/tmpfs.h | 4 +++
sys/vfs/tmpfs/tmpfs_subr.c | 27 +++++++++++++++++++
sys/vfs/tmpfs/tmpfs_vnops.c | 64 ++++++++++++++++++++-------------------------
3 files changed, 59 insertions(+), 36 deletions(-)
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/b8ffa3ea9edf3812e2a09e9de8f8c9ba4bf9bab9
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DragonFly BSD source repository
