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From: Richard Guy Briggs <rgb@redhat.com>
To: linux-security-module@vger.kernel.org, linux-audit@redhat.com
Cc: Richard Guy Briggs <rgb@redhat.com>,
	Andy Lutomirski <luto@kernel.org>,
	"Serge E. Hallyn" <serge.hallyn@ubuntu.com>,
	Kees Cook <keescook@chromium.org>,
	James Morris <james.l.morris@oracle.com>,
	Eric Paris <eparis@redhat.com>, Paul Moore <pmoore@redhat.com>,
	Steve Grubb <sgrubb@redhat.com>
Subject: [PATCH V4 03/10] capabilities: rename has_cap to has_fcap
Date: Tue,  5 Sep 2017 02:46:03 -0400	[thread overview]
Message-ID: <3eaf0505da29d9626b9c511d6ba1f7349e41c3cf.1504591358.git.rgb@redhat.com> (raw)
In-Reply-To: <cover.1504591358.git.rgb@redhat.com>
In-Reply-To: <cover.1504591358.git.rgb@redhat.com>

Rename has_cap to has_fcap to clarify it applies to file capabilities
since the entire source file is about capabilities.

Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Acked-by: James Morris <james.l.morris@oracle.com>
---
 security/commoncap.c |   20 ++++++++++----------
 1 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/security/commoncap.c b/security/commoncap.c
index cf6e2b0..623f251 100644
--- a/security/commoncap.c
+++ b/security/commoncap.c
@@ -330,7 +330,7 @@ int cap_inode_killpriv(struct dentry *dentry)
 static inline int bprm_caps_from_vfs_caps(struct cpu_vfs_cap_data *caps,
 					  struct linux_binprm *bprm,
 					  bool *effective,
-					  bool *has_cap)
+					  bool *has_fcap)
 {
 	struct cred *new = bprm->cred;
 	unsigned i;
@@ -340,7 +340,7 @@ static inline int bprm_caps_from_vfs_caps(struct cpu_vfs_cap_data *caps,
 		*effective = true;
 
 	if (caps->magic_etc & VFS_CAP_REVISION_MASK)
-		*has_cap = true;
+		*has_fcap = true;
 
 	CAP_FOR_EACH_U32(i) {
 		__u32 permitted = caps->permitted.cap[i];
@@ -429,7 +429,7 @@ int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data 
  * its xattrs and, if present, apply them to the proposed credentials being
  * constructed by execve().
  */
-static int get_file_caps(struct linux_binprm *bprm, bool *effective, bool *has_cap)
+static int get_file_caps(struct linux_binprm *bprm, bool *effective, bool *has_fcap)
 {
 	int rc = 0;
 	struct cpu_vfs_cap_data vcaps;
@@ -460,7 +460,7 @@ static int get_file_caps(struct linux_binprm *bprm, bool *effective, bool *has_c
 		goto out;
 	}
 
-	rc = bprm_caps_from_vfs_caps(&vcaps, bprm, effective, has_cap);
+	rc = bprm_caps_from_vfs_caps(&vcaps, bprm, effective, has_fcap);
 	if (rc == -EINVAL)
 		printk(KERN_NOTICE "%s: cap_from_disk returned %d for %s\n",
 		       __func__, rc, bprm->filename);
@@ -472,7 +472,7 @@ static int get_file_caps(struct linux_binprm *bprm, bool *effective, bool *has_c
 	return rc;
 }
 
-static void handle_privileged_root(struct linux_binprm *bprm, bool has_cap,
+static void handle_privileged_root(struct linux_binprm *bprm, bool has_fcap,
 				   bool *effective, kuid_t root_uid)
 {
 	const struct cred *old = current_cred();
@@ -485,7 +485,7 @@ static void handle_privileged_root(struct linux_binprm *bprm, bool has_cap,
 	 * for a setuid root binary run by a non-root user.  Do set it
 	 * for a root user just to cause least surprise to an admin.
 	 */
-	if (has_cap && !uid_eq(new->uid, root_uid) && uid_eq(new->euid, root_uid)) {
+	if (has_fcap && !uid_eq(new->uid, root_uid) && uid_eq(new->euid, root_uid)) {
 		warn_setuid_and_fcaps_mixed(bprm->filename);
 		return;
 	}
@@ -523,20 +523,20 @@ int cap_bprm_set_creds(struct linux_binprm *bprm)
 {
 	const struct cred *old = current_cred();
 	struct cred *new = bprm->cred;
-	bool effective = false, has_cap = false, is_setid;
+	bool effective = false, has_fcap = false, is_setid;
 	int ret;
 	kuid_t root_uid;
 
 	if (WARN_ON(!cap_ambient_invariant_ok(old)))
 		return -EPERM;
 
-	ret = get_file_caps(bprm, &effective, &has_cap);
+	ret = get_file_caps(bprm, &effective, &has_fcap);
 	if (ret < 0)
 		return ret;
 
 	root_uid = make_kuid(new->user_ns, 0);
 
-	handle_privileged_root(bprm, has_cap, &effective, root_uid);
+	handle_privileged_root(bprm, has_fcap, &effective, root_uid);
 
 	/* if we have fs caps, clear dangerous personality flags */
 	if (__cap_gained(permitted, new, old))
@@ -566,7 +566,7 @@ int cap_bprm_set_creds(struct linux_binprm *bprm)
 	new->sgid = new->fsgid = new->egid;
 
 	/* File caps or setid cancels ambient. */
-	if (has_cap || is_setid)
+	if (has_fcap || is_setid)
 		cap_clear(new->cap_ambient);
 
 	/*
-- 
1.7.1


  parent reply	other threads:[~2017-09-05  6:46 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-05  6:46 [PATCH V4 00/10] capabilities: do not audit log BPRM_FCAPS on set*id Richard Guy Briggs
2017-09-05  6:46 ` [PATCH V4 01/10] capabilities: factor out cap_bprm_set_creds privileged root Richard Guy Briggs
2017-09-06  6:05   ` James Morris
2017-09-07 19:42   ` Kees Cook
2017-09-05  6:46 ` [PATCH V4 02/10] capabilities: intuitive names for cap gain status Richard Guy Briggs
2017-09-07 19:57   ` Kees Cook
2017-09-05  6:46 ` Richard Guy Briggs [this message]
2017-09-08 18:15   ` [PATCH V4 03/10] capabilities: rename has_cap to has_fcap Kees Cook
2017-09-05  6:46 ` [PATCH V4 04/10] capabilities: use root_priveleged inline to clarify logic Richard Guy Briggs
2017-09-08 18:18   ` Kees Cook
2017-09-05  6:46 ` [PATCH V4 05/10] capabilities: use intuitive names for id changes Richard Guy Briggs
2017-09-08 18:22   ` Kees Cook
2017-09-05  6:46 ` [PATCH V4 06/10] capabilities: move audit log decision to function Richard Guy Briggs
2017-09-08 18:23   ` Kees Cook
2017-09-05  6:46 ` [PATCH V4 07/10] capabilities: remove a layer of conditional logic Richard Guy Briggs
2017-09-08 18:26   ` Kees Cook
2017-09-05  6:46 ` [PATCH V4 08/10] capabilities: invert logic for clarity Richard Guy Briggs
2017-09-08 18:27   ` Kees Cook
2017-09-05  6:46 ` [PATCH V4 09/10] capabilities: fix logic for effective root or real root Richard Guy Briggs
2017-09-08 18:34   ` Kees Cook
2017-09-20 22:11   ` Paul Moore
2017-09-20 22:25     ` Kees Cook
2017-09-20 22:27       ` Paul Moore
2017-09-05  6:46 ` [PATCH V4 10/10] capabilities: audit log other surprising conditions Richard Guy Briggs
2017-09-08 18:36   ` Kees Cook
2017-09-20 22:22   ` Paul Moore
2017-09-08 17:02 ` [PATCH V4 00/10] capabilities: do not audit log BPRM_FCAPS on set*id Paul Moore
2017-09-14  5:54   ` Richard Guy Briggs
2017-09-14  6:46     ` Paul Moore
2017-09-14  6:49       ` Paul Moore

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