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POSIX ACL changes.

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The .get_acl() method now gets passed a mnt_idmap arg, and we can now
choose to implement either .get_acl() or .get_inode_acl(). Technically
.get_acl() is a new implementation, and .get_inode_acl() is the old.
That second method now also gets an rcu flag passed, but we should be
fine either way.

Deeper under the covers however we do need to hook up the .set_acl()
method for inodes, otherwise setfacl will just fail with -ENOTSUPP. To
make this not super messy (it already is) we tack on the get_acl()
changes here.

This is all roughly ca. v6.1-rc1-4-g7420332a6ff4.

Signed-off-by: Auke Kok <auke.kok@versity.com>
This commit is contained in:
Auke Kok
2025-10-30 13:59:44 -04:00
parent 29e486e411
commit afb6ba00ad
5 changed files with 46 additions and 1 deletions
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kmod/src/Makefile.kernelcompat
+8
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@@ -478,3 +478,11 @@ endif
ifneq (,$(shell grep '^unsigned int stack_trace_save' include/linux/stacktrace.h))
ccflags-y += -DKC_STACK_TRACE_SAVE
endif
# v6.1-rc1-4-g7420332a6ff4
#
# .get_acl() method now has dentry arg (and mnt_idmap). The old get_acl has been renamed
# to get_inode_acl() and is still available as well, but has an extra rcu param.
ifneq (,$(shell grep 'struct posix_acl ...get_acl..struct mnt_idmap ., struct dentry' include/linux/fs.h))
ccflags-y += -DKC_GET_ACL_DENTRY
endif