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Richard Yao d31a7cb4fa
Address theoretical uninitialized variable usage in zstream
Coverity has long complained about the checksum being uninitialized if
an END record is processed before its BEGIN record. This should not
happen, but there was no code to check for it. I had left this unfixed
since it was a low priority issue, but then
9f4ede63d2 added another instance of this.

I am making an effort to "hold the line" to keep new coverity defect
reports from going unaddressed, so I find myself forced to fix this much
earlier than I had originally planned to address it.

The solution is to maintain a counter and a flag. Then use VERIFY
statements to verify the following runtime constraints:

 * Every record either has a corresponding BEGIN record, is a BEGIN
   record or is the end of stream END record for replication streams.
 * BEGIN records cannot be nested. i.e. There must be an END record
   before another BEGIN record may be seen.

Failure to meet these constraints will cause the program to exit.

This is sufficient to ensure that the checksum is never accessed when
uninitialized.

Reported-by: Coverity (CID 1524578)
Reported-by: Coverity (CID 1524633)
Reported-by: Coverity (CID 1527295)
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14176
2022-12-12 10:40:05 -08:00
.github Retire Ubuntu 18.04 CI builder 2022-11-30 10:25:57 -08:00
cmd Address theoretical uninitialized variable usage in zstream 2022-12-12 10:40:05 -08:00
config autoconf: add support for openEuler 2022-12-02 17:39:48 -08:00
contrib initramfs: Fix legacy mountpoint rootfs 2022-12-12 10:23:06 -08:00
etc Correct multipathd.target to .service 2022-11-18 11:36:19 -08:00
include Linux PPC: Fix build failures on kernels built without CONFIG_SPE 2022-12-09 10:51:23 -08:00
lib Do not pass -1 to strerror() from zfs_send_cb_impl() 2022-12-08 14:15:27 -08:00
man zfs.4: Correct the default for zfs_vdev_async_write_max_active 2022-11-28 11:41:14 -08:00
module Skip permission checks for extended attributes 2022-12-12 10:21:37 -08:00
rpm rpm: add support for openEuler 2022-11-29 09:27:22 -08:00
scripts Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
tests Skip permission checks for extended attributes 2022-12-12 10:21:37 -08:00
udev Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore autoconf: use include directives instead of recursing down cmd 2022-05-10 10:18:38 -07:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
AUTHORS zfs_rename: support RENAME_* flags 2022-10-28 09:49:20 -07:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
CODE_OF_CONDUCT.md Replace ZFS on Linux references with OpenZFS 2020-10-08 20:10:13 -07:00
configure.ac Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -07:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Process script directory for all configs 2022-10-27 16:45:14 -07:00
META Linux 6.0 compat: META 2022-10-26 14:55:12 -07:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md README: Update OpenZFS website url 2022-01-06 16:25:01 -08:00
RELEASES.md Add RELEASES.md file 2021-04-02 16:33:40 -07:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Official Resources

Installation

Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.

Contribute & Develop

We have a separate document with contribution guidelines.

We have a Code of Conduct.

Release

OpenZFS is released under a CDDL license. For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.