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authorNamjae Jeon <linkinjeon@kernel.org>2022-09-22 16:08:49 +0200
committerSteve French <stfrench@microsoft.com>2022-10-05 08:15:44 +0200
commit5609bdd9ffdccd83f9003511b1801584b703baa5 (patch)
treeaaa1b496f211921064c05736e88589de21e887e8 /fs/ksmbd/smb2pdu.c
parentksmbd: update documentation (diff)
downloadlinux-5609bdd9ffdccd83f9003511b1801584b703baa5.tar.xz
linux-5609bdd9ffdccd83f9003511b1801584b703baa5.zip
ksmbd: change security id to the one samba used for posix extension
Samba set SIDOWNER and SIDUNIX_GROUP in create posix context and set SIDUNIX_USER/GROUP in other sids for posix extension. This patch change security id to the one samba used. Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to '')
-rw-r--r--fs/ksmbd/smb2pdu.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
index f33a04e9e458..bb19c9d1de78 100644
--- a/fs/ksmbd/smb2pdu.c
+++ b/fs/ksmbd/smb2pdu.c
@@ -3572,10 +3572,15 @@ static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level,
FILE_ATTRIBUTE_DIRECTORY_LE : FILE_ATTRIBUTE_ARCHIVE_LE;
if (d_info->hide_dot_file && d_info->name[0] == '.')
posix_info->DosAttributes |= FILE_ATTRIBUTE_HIDDEN_LE;
+ /*
+ * SidBuffer(32) contain two sids(Domain sid(16), UNIX group sid(16)).
+ * UNIX sid(16) = revision(1) + num_subauth(1) + authority(6) +
+ * sub_auth(4 * 1(num_subauth)) + RID(4).
+ */
id_to_sid(from_kuid_munged(&init_user_ns, ksmbd_kstat->kstat->uid),
- SIDNFS_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
+ SIDUNIX_USER, (struct smb_sid *)&posix_info->SidBuffer[0]);
id_to_sid(from_kgid_munged(&init_user_ns, ksmbd_kstat->kstat->gid),
- SIDNFS_GROUP, (struct smb_sid *)&posix_info->SidBuffer[20]);
+ SIDUNIX_GROUP, (struct smb_sid *)&posix_info->SidBuffer[16]);
memcpy(posix_info->name, conv_name, conv_len);
posix_info->name_len = cpu_to_le32(conv_len);
posix_info->NextEntryOffset = cpu_to_le32(next_entry_offset);