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Niklas Cassel 8da22cc41a blk-zoned: allow zone management send operations without CAP_SYS_ADMIN 
commit ead3b768bb upstream.

Zone management send operations (BLKRESETZONE, BLKOPENZONE, BLKCLOSEZONE
and BLKFINISHZONE) should be allowed under the same permissions as write().
(write() does not require CAP_SYS_ADMIN).

Additionally, other ioctls like BLKSECDISCARD and BLKZEROOUT only check if
the fd was successfully opened with FMODE_WRITE.
(They do not require CAP_SYS_ADMIN).

Currently, zone management send operations require both CAP_SYS_ADMIN
and that the fd was successfully opened with FMODE_WRITE.

Remove the CAP_SYS_ADMIN requirement, so that zone management send
operations match the access control requirement of write(), BLKSECDISCARD
and BLKZEROOUT.

Fixes: 3ed05a987e ("blk-zoned: implement ioctls")
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Aravind Ramesh <aravind.ramesh@wdc.com>
Reviewed-by: Adam Manzanares <a.manzanares@samsung.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Cc: stable@vger.kernel.org # v4.10+
Link: https://lore.kernel.org/r/20210811110505.29649-2-Niklas.Cassel@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-09-22 12:26:19 +02:00
arch KVM: nVMX: Unconditionally clear nested.pi_pending on nested VM-Enter 2021-09-15 09:47:41 +02:00
block blk-zoned: allow zone management send operations without CAP_SYS_ADMIN 2021-09-22 12:26:19 +02:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:47:29 +02:00
crypto crypto: shash - avoid comparing pointers to exported functions under CFI 2021-07-14 16:53:13 +02:00
Documentation KVM: X86: MMU: Use the correct inherited permissions to get shadow page 2021-08-15 13:08:04 +02:00
drivers rtc: tps65910: Correct driver module alias 2021-09-22 12:26:19 +02:00
fs btrfs: reset replace target device to allocation state on close 2021-09-22 12:26:19 +02:00
include Revert "time: Handle negative seconds correctly in timespec64_to_ns()" 2021-09-16 12:56:13 +02:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel Revert "posix-cpu-timers: Force next expiration recalc after itimer reset" 2021-09-16 12:56:13 +02:00
lib lib/mpi: use kcalloc in mpi_resize 2021-09-15 09:47:29 +02:00
LICENSES
mm mm/page_alloc: speed up the iteration of max_order 2021-09-12 08:56:41 +02:00
net Revert "Bluetooth: Move shutdown callback before flushing tx and rx queue" 2021-09-16 12:56:13 +02:00
samples samples/bpf: Fix the error return code of xdp_redirect's main() 2021-07-14 16:53:30 +02:00
scripts scripts/tracing: fix the bug that can't parse raw_trace_func 2021-08-12 13:21:00 +02:00
security IMA: remove the dependency on CRYPTO_MD5 2021-09-15 09:47:41 +02:00
sound ASoC: wcd9335: Disable irq on slave ports in the remove function 2021-09-15 09:47:37 +02:00
tools bpf: Fix a typo of reuseport map in bpf.h. 2021-09-15 09:47:30 +02:00
usr initramfs: restore default compression behavior 2020-04-08 09:08:38 +02:00
virt KVM: Do not leak memory for duplicate debugfs directories 2021-08-12 13:21:03 +02:00
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MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile Linux 5.4.147 2021-09-16 12:56:14 +02:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.