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Diffstat (limited to 'security/selinux/hooks.c')
-rw-r--r--security/selinux/hooks.c73
1 files changed, 23 insertions, 50 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index c95a5874bf7d..76b66845a1c3 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -476,7 +476,9 @@ static int selinux_is_genfs_special_handling(struct super_block *sb)
!strcmp(sb->s_type->name, "rootfs") ||
(selinux_policycap_cgroupseclabel() &&
(!strcmp(sb->s_type->name, "cgroup") ||
- !strcmp(sb->s_type->name, "cgroup2")));
+ !strcmp(sb->s_type->name, "cgroup2"))) ||
+ (selinux_policycap_functionfs_seclabel() &&
+ !strcmp(sb->s_type->name, "functionfs"));
}
static int selinux_is_sblabel_mnt(struct super_block *sb)
@@ -741,7 +743,9 @@ static int selinux_set_mnt_opts(struct super_block *sb,
!strcmp(sb->s_type->name, "binder") ||
!strcmp(sb->s_type->name, "bpf") ||
!strcmp(sb->s_type->name, "pstore") ||
- !strcmp(sb->s_type->name, "securityfs"))
+ !strcmp(sb->s_type->name, "securityfs") ||
+ (selinux_policycap_functionfs_seclabel() &&
+ !strcmp(sb->s_type->name, "functionfs")))
sbsec->flags |= SE_SBGENFS;
if (!strcmp(sb->s_type->name, "sysfs") ||
@@ -4144,7 +4148,7 @@ static int selinux_file_open(struct file *file)
/* task security operations */
static int selinux_task_alloc(struct task_struct *task,
- unsigned long clone_flags)
+ u64 clone_flags)
{
u32 sid = current_sid();
@@ -5885,7 +5889,7 @@ static unsigned int selinux_ip_output(void *priv, struct sk_buff *skb,
/* we do this in the LOCAL_OUT path and not the POST_ROUTING path
* because we want to make sure we apply the necessary labeling
* before IPsec is applied so we can leverage AH protection */
- sk = sk_to_full_sk(skb->sk);
+ sk = skb_to_full_sk(skb);
if (sk) {
struct sk_security_struct *sksec;
@@ -7062,14 +7066,14 @@ static int bpf_fd_pass(const struct file *file, u32 sid)
if (file->f_op == &bpf_map_fops) {
map = file->private_data;
- bpfsec = map->security;
+ bpfsec = selinux_bpf_map_security(map);
ret = avc_has_perm(sid, bpfsec->sid, SECCLASS_BPF,
bpf_map_fmode_to_av(file->f_mode), NULL);
if (ret)
return ret;
} else if (file->f_op == &bpf_prog_fops) {
prog = file->private_data;
- bpfsec = prog->aux->security;
+ bpfsec = selinux_bpf_prog_security(prog);
ret = avc_has_perm(sid, bpfsec->sid, SECCLASS_BPF,
BPF__PROG_RUN, NULL);
if (ret)
@@ -7083,7 +7087,7 @@ static int selinux_bpf_map(struct bpf_map *map, fmode_t fmode)
u32 sid = current_sid();
struct bpf_security_struct *bpfsec;
- bpfsec = map->security;
+ bpfsec = selinux_bpf_map_security(map);
return avc_has_perm(sid, bpfsec->sid, SECCLASS_BPF,
bpf_map_fmode_to_av(fmode), NULL);
}
@@ -7093,7 +7097,7 @@ static int selinux_bpf_prog(struct bpf_prog *prog)
u32 sid = current_sid();
struct bpf_security_struct *bpfsec;
- bpfsec = prog->aux->security;
+ bpfsec = selinux_bpf_prog_security(prog);
return avc_has_perm(sid, bpfsec->sid, SECCLASS_BPF,
BPF__PROG_RUN, NULL);
}
@@ -7103,69 +7107,33 @@ static int selinux_bpf_map_create(struct bpf_map *map, union bpf_attr *attr,
{
struct bpf_security_struct *bpfsec;
- bpfsec = kzalloc(sizeof(*bpfsec), GFP_KERNEL);
- if (!bpfsec)
- return -ENOMEM;
-
+ bpfsec = selinux_bpf_map_security(map);
bpfsec->sid = current_sid();
- map->security = bpfsec;
return 0;
}
-static void selinux_bpf_map_free(struct bpf_map *map)
-{
- struct bpf_security_struct *bpfsec = map->security;
-
- map->security = NULL;
- kfree(bpfsec);
-}
-
static int selinux_bpf_prog_load(struct bpf_prog *prog, union bpf_attr *attr,
struct bpf_token *token, bool kernel)
{
struct bpf_security_struct *bpfsec;
- bpfsec = kzalloc(sizeof(*bpfsec), GFP_KERNEL);
- if (!bpfsec)
- return -ENOMEM;
-
+ bpfsec = selinux_bpf_prog_security(prog);
bpfsec->sid = current_sid();
- prog->aux->security = bpfsec;
return 0;
}
-static void selinux_bpf_prog_free(struct bpf_prog *prog)
-{
- struct bpf_security_struct *bpfsec = prog->aux->security;
-
- prog->aux->security = NULL;
- kfree(bpfsec);
-}
-
static int selinux_bpf_token_create(struct bpf_token *token, union bpf_attr *attr,
const struct path *path)
{
struct bpf_security_struct *bpfsec;
- bpfsec = kzalloc(sizeof(*bpfsec), GFP_KERNEL);
- if (!bpfsec)
- return -ENOMEM;
-
+ bpfsec = selinux_bpf_token_security(token);
bpfsec->sid = current_sid();
- token->security = bpfsec;
return 0;
}
-
-static void selinux_bpf_token_free(struct bpf_token *token)
-{
- struct bpf_security_struct *bpfsec = token->security;
-
- token->security = NULL;
- kfree(bpfsec);
-}
#endif
struct lsm_blob_sizes selinux_blob_sizes __ro_after_init = {
@@ -7183,6 +7151,9 @@ struct lsm_blob_sizes selinux_blob_sizes __ro_after_init = {
.lbs_xattr_count = SELINUX_INODE_INIT_XATTRS,
.lbs_tun_dev = sizeof(struct tun_security_struct),
.lbs_ib = sizeof(struct ib_security_struct),
+ .lbs_bpf_map = sizeof(struct bpf_security_struct),
+ .lbs_bpf_prog = sizeof(struct bpf_security_struct),
+ .lbs_bpf_token = sizeof(struct bpf_security_struct),
};
#ifdef CONFIG_PERF_EVENTS
@@ -7536,9 +7507,6 @@ static struct security_hook_list selinux_hooks[] __ro_after_init = {
LSM_HOOK_INIT(bpf, selinux_bpf),
LSM_HOOK_INIT(bpf_map, selinux_bpf_map),
LSM_HOOK_INIT(bpf_prog, selinux_bpf_prog),
- LSM_HOOK_INIT(bpf_map_free, selinux_bpf_map_free),
- LSM_HOOK_INIT(bpf_prog_free, selinux_bpf_prog_free),
- LSM_HOOK_INIT(bpf_token_free, selinux_bpf_token_free),
#endif
#ifdef CONFIG_PERF_EVENTS
@@ -7618,6 +7586,11 @@ static __init int selinux_init(void)
/* Set the security state for the initial task. */
cred_init_security();
+ /* Inform the audit system that secctx is used */
+ audit_cfg_lsm(&selinux_lsmid,
+ AUDIT_CFG_LSM_SECCTX_SUBJECT |
+ AUDIT_CFG_LSM_SECCTX_OBJECT);
+
default_noexec = !(VM_DATA_DEFAULT_FLAGS & VM_EXEC);
if (!default_noexec)
pr_notice("SELinux: virtual memory is executable by default\n");
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-30 23:26:37 +0000