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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-17 11:42:48 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-17 11:42:48 -0800 |
commit | 92dbc9dedccb9759c7f9f2f0ae6242396376988f (patch) | |
tree | 514f252b670bd1ad9b848ff4a8eefb0d1a0a6d12 /.clang-format | |
parent | 65de0b89d7d5e173d71cb50dfae786133c579308 (diff) | |
parent | 459c7c565ac36ba09ffbf24231147f408fde4203 (diff) | |
download | linux-92dbc9dedccb9759c7f9f2f0ae6242396376988f.tar.bz2 |
Merge tag 'ovl-update-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs updates from Miklos Szeredi:
- Allow unprivileged mounting in a user namespace.
For quite some time the security model of overlayfs has been that
operations on underlying layers shall be performed with the
privileges of the mounting task.
This way an unprvileged user cannot gain privileges by the act of
mounting an overlayfs instance. A full audit of all function calls
made by the overlayfs code has been performed to see whether they
conform to this model, and this branch contains some fixes in this
regard.
- Support running on copied filesystem images by optionally disabling
UUID verification.
- Bug fixes as well as documentation updates.
* tag 'ovl-update-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: unprivieged mounts
ovl: do not get metacopy for userxattr
ovl: do not fail because of O_NOATIME
ovl: do not fail when setting origin xattr
ovl: user xattr
ovl: simplify file splice
ovl: make ioctl() safe
ovl: check privs before decoding file handle
vfs: verify source area in vfs_dedupe_file_range_one()
vfs: move cap_convert_nscap() call into vfs_setxattr()
ovl: fix incorrect extent info in metacopy case
ovl: expand warning in ovl_d_real()
ovl: document lower modification caveats
ovl: warn about orphan metacopy
ovl: doc clarification
ovl: introduce new "uuid=off" option for inodes index feature
ovl: propagate ovl_fs to ovl_decode_real_fh and ovl_encode_real_fh
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