* @xfrm_policy_delete_security:
* @ctx contains the xfrm_sec_ctx.
* Authorize deletion of xp->security.
- * @xfrm_state_alloc_security:
+ * @xfrm_state_alloc:
* @x contains the xfrm_state being added to the Security Association
* Database by the XFRM system.
* @sec_ctx contains the security context information being provided by
* the user-level SA generation program (e.g., setkey or racoon).
- * @secid contains the secid from which to take the mls portion of the context.
* Allocate a security structure to the x->security field; the security
* field is initialized to NULL when the xfrm_state is allocated. Set the
- * context to correspond to either sec_ctx or polsec, with the mls portion
- * taken from secid in the latter case.
- * Return 0 if operation was successful (memory to allocate, legal context).
+ * context to correspond to sec_ctx. Return 0 if operation was successful
+ * (memory to allocate, legal context).
+ * @xfrm_state_alloc_acquire:
+ * @x contains the xfrm_state being added to the Security Association
+ * Database by the XFRM system.
+ * @polsec contains the policy's security context.
+ * @secid contains the secid from which to take the mls portion of the
+ * context.
+ * Allocate a security structure to the x->security field; the security
+ * field is initialized to NULL when the xfrm_state is allocated. Set the
+ * context to correspond to secid. Return 0 if operation was successful
+ * (memory to allocate, legal context).
* @xfrm_state_free_security:
* @x contains the xfrm_state.
* Deallocate x->security.
int (*inode_alloc_security) (struct inode *inode);
void (*inode_free_security) (struct inode *inode);
int (*inode_init_security) (struct inode *inode, struct inode *dir,
- const struct qstr *qstr, char **name,
+ const struct qstr *qstr, const char **name,
void **value, size_t *len);
int (*inode_create) (struct inode *dir,
struct dentry *dentry, umode_t mode);
int (*xfrm_policy_clone_security) (struct xfrm_sec_ctx *old_ctx, struct xfrm_sec_ctx **new_ctx);
void (*xfrm_policy_free_security) (struct xfrm_sec_ctx *ctx);
int (*xfrm_policy_delete_security) (struct xfrm_sec_ctx *ctx);
- int (*xfrm_state_alloc_security) (struct xfrm_state *x,
- struct xfrm_user_sec_ctx *sec_ctx,
- u32 secid);
+ int (*xfrm_state_alloc) (struct xfrm_state *x,
+ struct xfrm_user_sec_ctx *sec_ctx);
+ int (*xfrm_state_alloc_acquire) (struct xfrm_state *x,
+ struct xfrm_sec_ctx *polsec,
+ u32 secid);
void (*xfrm_state_free_security) (struct xfrm_state *x);
int (*xfrm_state_delete_security) (struct xfrm_state *x);
int (*xfrm_policy_lookup) (struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
const struct qstr *qstr,
initxattrs initxattrs, void *fs_data);
int security_old_inode_init_security(struct inode *inode, struct inode *dir,
- const struct qstr *qstr, char **name,
+ const struct qstr *qstr, const char **name,
void **value, size_t *len);
int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode);
int security_inode_link(struct dentry *old_dentry, struct inode *dir,
static inline int security_old_inode_init_security(struct inode *inode,
struct inode *dir,
const struct qstr *qstr,
- char **name, void **value,
- size_t *len)
+ const char **name,
+ void **value, size_t *len)
{
return -EOPNOTSUPP;
}
#include "audit.h"
#include "avc_ss.h"
- #define NUM_SEL_MNT_OPTS 5
+ #define SB_TYPE_FMT "%s%s%s"
+ #define SB_SUBTYPE(sb) (sb->s_subtype && sb->s_subtype[0])
+ #define SB_TYPE_ARGS(sb) sb->s_type->name, SB_SUBTYPE(sb) ? "." : "", SB_SUBTYPE(sb) ? sb->s_subtype : ""
extern struct security_operations *security_ops;
* This function checks the SECMARK reference counter to see if any SECMARK
* targets are currently configured, if the reference counter is greater than
* zero SECMARK is considered to be enabled. Returns true (1) if SECMARK is
- * enabled, false (0) if SECMARK is disabled.
+ * enabled, false (0) if SECMARK is disabled. If the always_check_network
+ * policy capability is enabled, SECMARK is always considered enabled.
*
*/
static int selinux_secmark_enabled(void)
{
- return (atomic_read(&selinux_secmark_refcount) > 0);
+ return (selinux_policycap_alwaysnetwork || atomic_read(&selinux_secmark_refcount));
+ }
+
+ /**
+ * selinux_peerlbl_enabled - Check to see if peer labeling is currently enabled
+ *
+ * Description:
+ * This function checks if NetLabel or labeled IPSEC is enabled. Returns true
+ * (1) if any are enabled or false (0) if neither are enabled. If the
+ * always_check_network policy capability is enabled, peer labeling
+ * is always considered enabled.
+ *
+ */
+ static int selinux_peerlbl_enabled(void)
+ {
+ return (selinux_policycap_alwaysnetwork || netlbl_enabled() || selinux_xfrm_enabled());
}
/*
Opt_defcontext = 3,
Opt_rootcontext = 4,
Opt_labelsupport = 5,
+ Opt_nextmntopt = 6,
};
+ #define NUM_SEL_MNT_OPTS (Opt_nextmntopt - 1)
+
static const match_table_t tokens = {
{Opt_context, CONTEXT_STR "%s"},
{Opt_fscontext, FSCONTEXT_STR "%s"},
return rc;
}
+ static int selinux_is_sblabel_mnt(struct super_block *sb)
+ {
+ struct superblock_security_struct *sbsec = sb->s_security;
+
+ if (sbsec->behavior == SECURITY_FS_USE_XATTR ||
+ sbsec->behavior == SECURITY_FS_USE_TRANS ||
+ sbsec->behavior == SECURITY_FS_USE_TASK)
+ return 1;
+
+ /* Special handling for sysfs. Is genfs but also has setxattr handler*/
+ if (strncmp(sb->s_type->name, "sysfs", sizeof("sysfs")) == 0)
+ return 1;
+
+ /*
+ * Special handling for rootfs. Is genfs but supports
+ * setting SELinux context on in-core inodes.
+ */
+ if (strncmp(sb->s_type->name, "rootfs", sizeof("rootfs")) == 0)
+ return 1;
+
+ return 0;
+ }
+
static int sb_finish_set_opts(struct super_block *sb)
{
struct superblock_security_struct *sbsec = sb->s_security;
the first boot of the SELinux kernel before we have
assigned xattr values to the filesystem. */
if (!root_inode->i_op->getxattr) {
- printk(KERN_WARNING "SELinux: (dev %s, type %s) has no "
- "xattr support\n", sb->s_id, sb->s_type->name);
+ printk(KERN_WARNING "SELinux: (dev %s, type "SB_TYPE_FMT") has no "
+ "xattr support\n", sb->s_id, SB_TYPE_ARGS(sb));
rc = -EOPNOTSUPP;
goto out;
}
if (rc < 0 && rc != -ENODATA) {
if (rc == -EOPNOTSUPP)
printk(KERN_WARNING "SELinux: (dev %s, type "
- "%s) has no security xattr handler\n",
- sb->s_id, sb->s_type->name);
+ SB_TYPE_FMT") has no security xattr handler\n",
+ sb->s_id, SB_TYPE_ARGS(sb));
else
printk(KERN_WARNING "SELinux: (dev %s, type "
- "%s) getxattr errno %d\n", sb->s_id,
- sb->s_type->name, -rc);
+ SB_TYPE_FMT") getxattr errno %d\n", sb->s_id,
+ SB_TYPE_ARGS(sb), -rc);
goto out;
}
}
- sbsec->flags |= (SE_SBINITIALIZED | SE_SBLABELSUPP);
-
if (sbsec->behavior > ARRAY_SIZE(labeling_behaviors))
- printk(KERN_ERR "SELinux: initialized (dev %s, type %s), unknown behavior\n",
- sb->s_id, sb->s_type->name);
+ printk(KERN_ERR "SELinux: initialized (dev %s, type "SB_TYPE_FMT"), unknown behavior\n",
+ sb->s_id, SB_TYPE_ARGS(sb));
else
- printk(KERN_DEBUG "SELinux: initialized (dev %s, type %s), %s\n",
- sb->s_id, sb->s_type->name,
+ printk(KERN_DEBUG "SELinux: initialized (dev %s, type "SB_TYPE_FMT"), %s\n",
+ sb->s_id, SB_TYPE_ARGS(sb),
labeling_behaviors[sbsec->behavior-1]);
- if (sbsec->behavior == SECURITY_FS_USE_GENFS ||
- sbsec->behavior == SECURITY_FS_USE_MNTPOINT ||
- sbsec->behavior == SECURITY_FS_USE_NONE ||
- sbsec->behavior > ARRAY_SIZE(labeling_behaviors))
- sbsec->flags &= ~SE_SBLABELSUPP;
-
- /* Special handling for sysfs. Is genfs but also has setxattr handler*/
- if (strncmp(sb->s_type->name, "sysfs", sizeof("sysfs")) == 0)
- sbsec->flags |= SE_SBLABELSUPP;
+ sbsec->flags |= SE_SBINITIALIZED;
+ if (selinux_is_sblabel_mnt(sb))
+ sbsec->flags |= SBLABEL_MNT;
/* Initialize the root inode. */
rc = inode_doinit_with_dentry(root_inode, root);
if (!ss_initialized)
return -EINVAL;
+ /* make sure we always check enough bits to cover the mask */
+ BUILD_BUG_ON(SE_MNTMASK >= (1 << NUM_SEL_MNT_OPTS));
+
tmp = sbsec->flags & SE_MNTMASK;
/* count the number of mount options for this sb */
- for (i = 0; i < 8; i++) {
+ for (i = 0; i < NUM_SEL_MNT_OPTS; i++) {
if (tmp & 0x01)
opts->num_mnt_opts++;
tmp >>= 1;
}
/* Check if the Label support flag is set */
- if (sbsec->flags & SE_SBLABELSUPP)
+ if (sbsec->flags & SBLABEL_MNT)
opts->num_mnt_opts++;
opts->mnt_opts = kcalloc(opts->num_mnt_opts, sizeof(char *), GFP_ATOMIC);
opts->mnt_opts[i] = context;
opts->mnt_opts_flags[i++] = ROOTCONTEXT_MNT;
}
- if (sbsec->flags & SE_SBLABELSUPP) {
+ if (sbsec->flags & SBLABEL_MNT) {
opts->mnt_opts[i] = NULL;
- opts->mnt_opts_flags[i++] = SE_SBLABELSUPP;
+ opts->mnt_opts_flags[i++] = SBLABEL_MNT;
}
BUG_ON(i != opts->num_mnt_opts);
const struct cred *cred = current_cred();
int rc = 0, i;
struct superblock_security_struct *sbsec = sb->s_security;
- const char *name = sb->s_type->name;
struct inode *inode = sbsec->sb->s_root->d_inode;
struct inode_security_struct *root_isec = inode->i_security;
u32 fscontext_sid = 0, context_sid = 0, rootcontext_sid = 0;
for (i = 0; i < num_opts; i++) {
u32 sid;
- if (flags[i] == SE_SBLABELSUPP)
+ if (flags[i] == SBLABEL_MNT)
continue;
rc = security_context_to_sid(mount_options[i],
strlen(mount_options[i]), &sid);
if (rc) {
printk(KERN_WARNING "SELinux: security_context_to_sid"
- "(%s) failed for (dev %s, type %s) errno=%d\n",
- mount_options[i], sb->s_id, name, rc);
+ "(%s) failed for (dev %s, type "SB_TYPE_FMT") errno=%d\n",
+ mount_options[i], sb->s_id, SB_TYPE_ARGS(sb), rc);
goto out;
}
switch (flags[i]) {
* Determine the labeling behavior to use for this
* filesystem type.
*/
- rc = security_fs_use((sbsec->flags & SE_SBPROC) ?
- "proc" : sb->s_type->name,
- &sbsec->behavior, &sbsec->sid);
+ rc = security_fs_use(sb);
if (rc) {
printk(KERN_WARNING
"%s: security_fs_use(%s) returned %d\n",
out_double_mount:
rc = -EINVAL;
printk(KERN_WARNING "SELinux: mount invalid. Same superblock, different "
- "security settings for (dev %s, type %s)\n", sb->s_id, name);
+ "security settings for (dev %s, type "SB_TYPE_FMT")\n", sb->s_id,
+ SB_TYPE_ARGS(sb));
goto out;
}
case DEFCONTEXT_MNT:
prefix = DEFCONTEXT_STR;
break;
- case SE_SBLABELSUPP:
+ case SBLABEL_MNT:
seq_putc(m, ',');
seq_puts(m, LABELSUPP_STR);
continue;
if (rc)
return rc;
- if (!newsid || !(sbsec->flags & SE_SBLABELSUPP)) {
+ if (!newsid || !(sbsec->flags & SBLABEL_MNT)) {
rc = security_transition_sid(sid, dsec->sid, tclass,
&dentry->d_name, &newsid);
if (rc)
u32 sid;
size_t len;
- if (flags[i] == SE_SBLABELSUPP)
+ if (flags[i] == SBLABEL_MNT)
continue;
len = strlen(mount_options[i]);
rc = security_context_to_sid(mount_options[i], len, &sid);
if (rc) {
printk(KERN_WARNING "SELinux: security_context_to_sid"
- "(%s) failed for (dev %s, type %s) errno=%d\n",
- mount_options[i], sb->s_id, sb->s_type->name, rc);
+ "(%s) failed for (dev %s, type "SB_TYPE_FMT") errno=%d\n",
+ mount_options[i], sb->s_id, SB_TYPE_ARGS(sb), rc);
goto out_free_opts;
}
rc = -EINVAL;
return rc;
out_bad_option:
printk(KERN_WARNING "SELinux: unable to change security options "
- "during remount (dev %s, type=%s)\n", sb->s_id,
- sb->s_type->name);
+ "during remount (dev %s, type "SB_TYPE_FMT")\n", sb->s_id,
+ SB_TYPE_ARGS(sb));
goto out_free_opts;
}
}
static int selinux_inode_init_security(struct inode *inode, struct inode *dir,
- const struct qstr *qstr, char **name,
+ const struct qstr *qstr,
+ const char **name,
void **value, size_t *len)
{
const struct task_security_struct *tsec = current_security();
struct superblock_security_struct *sbsec;
u32 sid, newsid, clen;
int rc;
- char *namep = NULL, *context;
+ char *context;
dsec = dir->i_security;
sbsec = dir->i_sb->s_security;
if ((sbsec->flags & SE_SBINITIALIZED) &&
(sbsec->behavior == SECURITY_FS_USE_MNTPOINT))
newsid = sbsec->mntpoint_sid;
- else if (!newsid || !(sbsec->flags & SE_SBLABELSUPP)) {
+ else if (!newsid || !(sbsec->flags & SBLABEL_MNT)) {
rc = security_transition_sid(sid, dsec->sid,
inode_mode_to_security_class(inode->i_mode),
qstr, &newsid);
isec->initialized = 1;
}
- if (!ss_initialized || !(sbsec->flags & SE_SBLABELSUPP))
+ if (!ss_initialized || !(sbsec->flags & SBLABEL_MNT))
return -EOPNOTSUPP;
- if (name) {
- namep = kstrdup(XATTR_SELINUX_SUFFIX, GFP_NOFS);
- if (!namep)
- return -ENOMEM;
- *name = namep;
- }
+ if (name)
+ *name = XATTR_SELINUX_SUFFIX;
if (value && len) {
rc = security_sid_to_context_force(newsid, &context, &clen);
- if (rc) {
- kfree(namep);
+ if (rc)
return rc;
- }
*value = context;
*len = clen;
}
return selinux_inode_setotherxattr(dentry, name);
sbsec = inode->i_sb->s_security;
- if (!(sbsec->flags & SE_SBLABELSUPP))
+ if (!(sbsec->flags & SBLABEL_MNT))
return -EOPNOTSUPP;
if (!inode_owner_or_capable(inode))
u32 nlbl_sid;
u32 nlbl_type;
- selinux_skb_xfrm_sid(skb, &xfrm_sid);
- selinux_netlbl_skbuff_getsid(skb, family, &nlbl_type, &nlbl_sid);
+ err = selinux_skb_xfrm_sid(skb, &xfrm_sid);
+ if (unlikely(err))
+ return -EACCES;
+ err = selinux_netlbl_skbuff_getsid(skb, family, &nlbl_type, &nlbl_sid);
+ if (unlikely(err))
+ return -EACCES;
err = security_net_peersid_resolve(nlbl_sid, nlbl_type, xfrm_sid, sid);
if (unlikely(err)) {
return selinux_sock_rcv_skb_compat(sk, skb, family);
secmark_active = selinux_secmark_enabled();
- peerlbl_active = netlbl_enabled() || selinux_xfrm_enabled();
+ peerlbl_active = selinux_peerlbl_enabled();
if (!secmark_active && !peerlbl_active)
return 0;
secmark_active = selinux_secmark_enabled();
netlbl_active = netlbl_enabled();
- peerlbl_active = netlbl_active || selinux_xfrm_enabled();
+ peerlbl_active = selinux_peerlbl_enabled();
if (!secmark_active && !peerlbl_active)
return NF_ACCEPT;
return NF_ACCEPT;
#endif
secmark_active = selinux_secmark_enabled();
- peerlbl_active = netlbl_enabled() || selinux_xfrm_enabled();
+ peerlbl_active = selinux_peerlbl_enabled();
if (!secmark_active && !peerlbl_active)
return NF_ACCEPT;
.xfrm_policy_clone_security = selinux_xfrm_policy_clone,
.xfrm_policy_free_security = selinux_xfrm_policy_free,
.xfrm_policy_delete_security = selinux_xfrm_policy_delete,
- .xfrm_state_alloc_security = selinux_xfrm_state_alloc,
+ .xfrm_state_alloc = selinux_xfrm_state_alloc,
+ .xfrm_state_alloc_acquire = selinux_xfrm_state_alloc_acquire,
.xfrm_state_free_security = selinux_xfrm_state_free,
.xfrm_state_delete_security = selinux_xfrm_state_delete,
.xfrm_policy_lookup = selinux_xfrm_policy_lookup,
#include <net/flow.h>
int selinux_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
- struct xfrm_user_sec_ctx *sec_ctx);
+ struct xfrm_user_sec_ctx *uctx);
int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
struct xfrm_sec_ctx **new_ctxp);
void selinux_xfrm_policy_free(struct xfrm_sec_ctx *ctx);
int selinux_xfrm_policy_delete(struct xfrm_sec_ctx *ctx);
int selinux_xfrm_state_alloc(struct xfrm_state *x,
- struct xfrm_user_sec_ctx *sec_ctx, u32 secid);
+ struct xfrm_user_sec_ctx *uctx);
+ int selinux_xfrm_state_alloc_acquire(struct xfrm_state *x,
+ struct xfrm_sec_ctx *polsec, u32 secid);
void selinux_xfrm_state_free(struct xfrm_state *x);
int selinux_xfrm_state_delete(struct xfrm_state *x);
int selinux_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir);
int selinux_xfrm_state_pol_flow_match(struct xfrm_state *x,
- struct xfrm_policy *xp, const struct flowi *fl);
-
- /*
- * Extract the security blob from the sock (it's actually on the socket)
- */
- static inline struct inode_security_struct *get_sock_isec(struct sock *sk)
- {
- if (!sk->sk_socket)
- return NULL;
-
- return SOCK_INODE(sk->sk_socket)->i_security;
- }
+ struct xfrm_policy *xp,
+ const struct flowi *fl);
#ifdef CONFIG_SECURITY_NETWORK_XFRM
extern atomic_t selinux_xfrm_refcount;
return (atomic_read(&selinux_xfrm_refcount) > 0);
}
- int selinux_xfrm_sock_rcv_skb(u32 sid, struct sk_buff *skb,
- struct common_audit_data *ad);
- int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
- struct common_audit_data *ad, u8 proto);
+ int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb,
+ struct common_audit_data *ad);
+ int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb,
+ struct common_audit_data *ad, u8 proto);
int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
static inline void selinux_xfrm_notify_policyload(void)
{
+ struct net *net;
+
atomic_inc(&flow_cache_genid);
- rt_genid_bump(&init_net);
+ rtnl_lock();
+ for_each_net(net)
+ rt_genid_bump_all(net);
+ rtnl_unlock();
}
#else
static inline int selinux_xfrm_enabled(void)
return 0;
}
- static inline int selinux_xfrm_sock_rcv_skb(u32 isec_sid, struct sk_buff *skb,
- struct common_audit_data *ad)
+ static inline int selinux_xfrm_sock_rcv_skb(u32 sk_sid, struct sk_buff *skb,
+ struct common_audit_data *ad)
{
return 0;
}
- static inline int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
- struct common_audit_data *ad, u8 proto)
+ static inline int selinux_xfrm_postroute_last(u32 sk_sid, struct sk_buff *skb,
+ struct common_audit_data *ad,
+ u8 proto)
{
return 0;
}
- static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall)
+ static inline int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid,
+ int ckall)
{
*sid = SECSID_NULL;
return 0;
}
#endif
- static inline void selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid)
+ static inline int selinux_skb_xfrm_sid(struct sk_buff *skb, u32 *sid)
{
- int err = selinux_xfrm_decode_session(skb, sid, 0);
- BUG_ON(err);
+ return selinux_xfrm_decode_session(skb, sid, 0);
}
#endif /* _SELINUX_XFRM_H_ */
projects / deliverable / linux.git / commitdiff
