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Richard Yao 67395be0c2
Fix userland dereference NULL return value bugs 
* `zstream_do_token()` does not handle failures from `libzfs_init()`

 * `ztest_global_vars_to_zdb_args()` does not handle failures from
   `calloc()`.

 * `zfs_snapshot_nvl()` will pass an offset to a NULL pointer as a
   source to `strlcpy()` if the provided nvlist is `NULL`.

We handle these by doing what the existing error handling does for other
errors involving these functions.

Coverity complained about these. It had complained about several more,
but one was fixed by 570ca4441e and
another was a false positive. The remaining complaints labelled
"dereferece null return vaue" involve fetching things stored in
in-kernel data structures via `list_head()/list_next()`,
`AVL_PREV()/AVL_NEXT()` and `zfs_btree_find()`. Most of them occur in
void functions that have no error handling. They are much harder to
analyze than the two fixed in this patch, so they are left for a
follow-up patch.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #13971
2022-09-30 17:02:57 -07:00
.github CI: revert --with-config=dist to hotfix Ubuntu 20.04 2022-09-14 16:26:57 -07:00
cmd Fix userland dereference NULL return value bugs 2022-09-30 17:02:57 -07:00
config zed: mark disks as REMOVED when they are removed 2022-09-28 09:48:46 -07:00
contrib Reduce false positives from Static Analyzers 2022-09-30 15:30:12 -07:00
etc Update zfs-mount to load before fstab, matches systemd service. 2022-09-26 17:11:43 -07:00
include Fix double const qualifier declarations 2022-09-30 15:34:39 -07:00
lib Fix userland dereference NULL return value bugs 2022-09-30 17:02:57 -07:00
man Bring per_txg_dirty_frees_percent back to 30 2022-09-27 17:38:03 -07:00
module Fix potential NULL pointer dereference in dsl_dataset_promote_check() 2022-09-30 16:59:51 -07:00
rpm Add zilstat script to report zil kstats in a user friendly manner 2022-09-02 13:24:07 -07:00
scripts Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
tests Miscellaneous ZTS fixes 2022-09-29 08:56:42 -07:00
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 Introduce BLAKE3 checksums as an OpenZFS feature 2022-06-08 15:55:57 -07:00
autogen.sh autogen.sh: paper over automake <1.14's lack of %reldir% support 2022-05-10 10:20:46 -07:00
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 Replace EXTRA_DIST with dist_noinst_DATA 2022-05-26 09:24:50 -07:00
META Linux 5.19 compat: META 2022-08-02 10:04:38 -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

README.md

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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.

codecov coverity

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.