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Subject[PATCH review 21/85] ocfs2: Handle kuids and kgids in acl/xattr conversions.
From: "Eric W. Biederman" <ebiederm@xmission.com>

Explicitly deal with the different kinds of acls because they need
different conversions.

Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
fs/ocfs2/acl.c | 31 +++++++++++++++++++++++++++++--
1 files changed, 29 insertions(+), 2 deletions(-)

diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c
index 260b162..8a40457 100644
--- a/fs/ocfs2/acl.c
+++ b/fs/ocfs2/acl.c
@@ -65,7 +65,20 @@ static struct posix_acl *ocfs2_acl_from_xattr(const void *value, size_t size)

acl->a_entries[n].e_tag = le16_to_cpu(entry->e_tag);
acl->a_entries[n].e_perm = le16_to_cpu(entry->e_perm);
- acl->a_entries[n].e_id = le32_to_cpu(entry->e_id);
+ switch(acl->a_entries[n].e_tag) {
+ case ACL_USER:
+ acl->a_entries[n].e_uid =
+ make_kuid(&init_user_ns,
+ le32_to_cpu(entry->e_id));
+ break;
+ case ACL_GROUP:
+ acl->a_entries[n].e_gid =
+ make_kgid(&init_user_ns,
+ le32_to_cpu(entry->e_id));
+ break;
+ default:
+ break;
+ }
value += sizeof(struct posix_acl_entry);

}
@@ -91,7 +104,21 @@ static void *ocfs2_acl_to_xattr(const struct posix_acl *acl, size_t *size)
for (n = 0; n < acl->a_count; n++, entry++) {
entry->e_tag = cpu_to_le16(acl->a_entries[n].e_tag);
entry->e_perm = cpu_to_le16(acl->a_entries[n].e_perm);
- entry->e_id = cpu_to_le32(acl->a_entries[n].e_id);
+ switch(acl->a_entries[n].e_tag) {
+ case ACL_USER:
+ entry->e_id = cpu_to_le32(
+ from_kuid(&init_user_ns,
+ acl->a_entries[n].e_uid));
+ break;
+ case ACL_GROUP:
+ entry->e_id = cpu_to_le32(
+ from_kgid(&init_user_ns,
+ acl->a_entries[n].e_gid));
+ break;
+ default:
+ entry->e_id = cpu_to_le32(ACL_UNDEFINED_ID);
+ break;
+ }
}
return ocfs2_acl;
}
--
1.7.5.4


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