meta-agl-demo - meta-agl-demo layer (demo/staging/"one-shot")

Age	Commit message (Expand)	Author	Files	Lines
2023-05-05	Add templates for gitlab issues and merge requests	Jan-Simon Möller	2	-0/+4

From 99719d12de612819e06fc3d0741b7e2da119d61c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jos=C3=A9=20Bollo?= <jose.bollo@iot.bzh> Date: Wed, 2 Nov 2016 18:32:32 +0100 Subject: [PATCH] Smack: handles socket in file_receive MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The security context of sockets and the rules of security are differents for sockets. This is a backport of http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=79be09350 Change-Id: Id520c9ca8f7ee8883523a0e4b40176524442db33 Signed-off-by: José Bollo <jose.bollo@iot.bzh> --- security/smack/smack_lsm.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 94914db..3b09524 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -1638,9 +1638,34 @@ static int smack_file_receive(struct file *file) int may = 0; struct smk_audit_info ad; struct inode *inode = file_inode(file); + struct socket *sock; + struct task_smack *tsp; + struct socket_smack *ssp; + + if (unlikely(IS_PRIVATE(inode))) + return 0; smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH); smk_ad_setfield_u_fs_path(&ad, file->f_path); + + if (S_ISSOCK(inode->i_mode)) { + sock = SOCKET_I(inode); + ssp = sock->sk->sk_security; + tsp = current_security(); + /* + * If the receiving process can't write to the + * passed socket or if the passed socket can't + * write to the receiving process don't accept + * the passed socket. + */ + rc = smk_access(tsp->smk_task, ssp->smk_out, MAY_WRITE, &ad); + rc = smk_bu_file(file, may, rc); + if (rc < 0) + return rc; + rc = smk_access(ssp->smk_in, tsp->smk_task, MAY_WRITE, &ad); + rc = smk_bu_file(file, may, rc); + return rc; + } /* * This code relies on bitmasks. */ -- 2.7.4