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skip permission checks for extended attributes

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zfs_zaccess_trivial() calls the generic_permission() to read
xattr attributes. This causes deadlock if called from
zpl_xattr_set_dir() context as xattr and the dent locks are
already held in this scenario. This commit skips the permissions
checks for extended attributes since the Linux VFS stack already
checks it before passing us the control.

Signed-off-by: Ameer Hamza <ahamza@ixsystems.com>
This commit is contained in:
Ameer Hamza
2022-11-23 01:28:13 +05:00
committed by Brian Behlendorf
parent d0f350c962
commit 75fbe7eb99
4 changed files with 6 additions and 5 deletions
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tests/zfs-tests/tests/functional/acl/posix/posix_004_pos.ksh
+3
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@@ -35,6 +35,7 @@
# STRATEGY:
# 1. Prepare an appropriate ACL on the test directory
# 2. Change the owner of the directory
# 3. Reset and set the ACLs for test directory owned by the user
#
verify_runnable "both"
@@ -44,6 +45,8 @@ log_must setfacl -d -m u:$ZFS_ACL_STAFF1:rwx $TESTDIR
log_must setfacl -b $TESTDIR
log_must chown $ZFS_ACL_STAFF1 $TESTDIR
log_must setfacl -b $TESTDIR
log_must setfacl -d -m u:$ZFS_ACL_STAFF1:rwx $TESTDIR
log_must chown 0 $TESTDIR
log_pass "chown works with POSIX ACLs"