LIST_HEAD(smk_ipv6_port_list);
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static void smk_bu_mode(int mode, char *s)
+{
+ int i = 0;
+
+ if (mode & MAY_READ)
+ s[i++] = 'r';
+ if (mode & MAY_WRITE)
+ s[i++] = 'w';
+ if (mode & MAY_EXEC)
+ s[i++] = 'x';
+ if (mode & MAY_APPEND)
+ s[i++] = 'a';
+ if (mode & MAY_TRANSMUTE)
+ s[i++] = 't';
+ if (mode & MAY_LOCK)
+ s[i++] = 'l';
+ if (i == 0)
+ s[i++] = '-';
+ s[i] = '\0';
+}
+#endif
+
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static int smk_bu_note(char *note, struct smack_known *sskp,
+ struct smack_known *oskp, int mode, int rc)
+{
+ char acc[SMK_NUM_ACCESS_TYPE + 1];
+
+ if (rc <= 0)
+ return rc;
+
+ smk_bu_mode(mode, acc);
+ pr_info("Smack Bringup: (%s %s %s) %s\n",
+ sskp->smk_known, oskp->smk_known, acc, note);
+ return 0;
+}
+#else
+#define smk_bu_note(note, sskp, oskp, mode, RC) (RC)
+#endif
+
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static int smk_bu_current(char *note, struct smack_known *oskp,
+ int mode, int rc)
+{
+ struct task_smack *tsp = current_security();
+ char acc[SMK_NUM_ACCESS_TYPE + 1];
+
+ if (rc <= 0)
+ return rc;
+
+ smk_bu_mode(mode, acc);
+ pr_info("Smack Bringup: (%s %s %s) %s %s\n",
+ tsp->smk_task->smk_known, oskp->smk_known,
+ acc, current->comm, note);
+ return 0;
+}
+#else
+#define smk_bu_current(note, oskp, mode, RC) (RC)
+#endif
+
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static int smk_bu_task(struct task_struct *otp, int mode, int rc)
+{
+ struct task_smack *tsp = current_security();
+ struct task_smack *otsp = task_security(otp);
+ char acc[SMK_NUM_ACCESS_TYPE + 1];
+
+ if (rc <= 0)
+ return rc;
+
+ smk_bu_mode(mode, acc);
+ pr_info("Smack Bringup: (%s %s %s) %s to %s\n",
+ tsp->smk_task->smk_known, otsp->smk_task->smk_known, acc,
+ current->comm, otp->comm);
+ return 0;
+}
+#else
+#define smk_bu_task(otp, mode, RC) (RC)
+#endif
+
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static int smk_bu_inode(struct inode *inode, int mode, int rc)
+{
+ struct task_smack *tsp = current_security();
+ char acc[SMK_NUM_ACCESS_TYPE + 1];
+
+ if (rc <= 0)
+ return rc;
+
+ smk_bu_mode(mode, acc);
+ pr_info("Smack Bringup: (%s %s %s) inode=(%s %ld) %s\n",
+ tsp->smk_task->smk_known, smk_of_inode(inode)->smk_known, acc,
+ inode->i_sb->s_id, inode->i_ino, current->comm);
+ return 0;
+}
+#else
+#define smk_bu_inode(inode, mode, RC) (RC)
+#endif
+
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static int smk_bu_file(struct file *file, int mode, int rc)
+{
+ struct task_smack *tsp = current_security();
+ struct smack_known *sskp = tsp->smk_task;
+ struct inode *inode = file->f_inode;
+ char acc[SMK_NUM_ACCESS_TYPE + 1];
+
+ if (rc <= 0)
+ return rc;
+
+ smk_bu_mode(mode, acc);
+ pr_info("Smack Bringup: (%s %s %s) file=(%s %ld %s) %s\n",
+ sskp->smk_known, (char *)file->f_security, acc,
+ inode->i_sb->s_id, inode->i_ino, file->f_dentry->d_name.name,
+ current->comm);
+ return 0;
+}
+#else
+#define smk_bu_file(file, mode, RC) (RC)
+#endif
+
+#ifdef CONFIG_SECURITY_SMACK_BRINGUP
+static int smk_bu_credfile(const struct cred *cred, struct file *file,
+ int mode, int rc)
+{
+ struct task_smack *tsp = cred->security;
+ struct smack_known *sskp = tsp->smk_task;
+ struct inode *inode = file->f_inode;
+ char acc[SMK_NUM_ACCESS_TYPE + 1];
+
+ if (rc <= 0)
+ return rc;
+
+ smk_bu_mode(mode, acc);
+ pr_info("Smack Bringup: (%s %s %s) file=(%s %ld %s) %s\n",
+ sskp->smk_known, smk_of_inode(inode)->smk_known, acc,
+ inode->i_sb->s_id, inode->i_ino, file->f_dentry->d_name.name,
+ current->comm);
+ return 0;
+}
+#else
+#define smk_bu_credfile(cred, file, mode, RC) (RC)
+#endif
+
/**
* smk_fetch - Fetch the smack label from a file.
* @ip: a pointer to the inode
/**
* new_inode_smack - allocate an inode security blob
- * @smack: a pointer to the Smack label to use in the blob
+ * @skp: a pointer to the Smack label entry to use in the blob
*
* Returns the new blob or NULL if there's no memory available
*/
-struct inode_smack *new_inode_smack(char *smack)
+struct inode_smack *new_inode_smack(struct smack_known *skp)
{
struct inode_smack *isp;
if (isp == NULL)
return NULL;
- isp->smk_inode = smack;
+ isp->smk_inode = skp;
isp->smk_flags = 0;
mutex_init(&isp->smk_lock);
/**
* smk_ptrace_rule_check - helper for ptrace access
* @tracer: tracer process
- * @tracee_label: label of the process that's about to be traced,
- * the pointer must originate from smack structures
+ * @tracee_known: label entry of the process that's about to be traced
* @mode: ptrace attachment mode (PTRACE_MODE_*)
* @func: name of the function that called us, used for audit
*
* Returns 0 on access granted, -error on error
*/
-static int smk_ptrace_rule_check(struct task_struct *tracer, char *tracee_label,
+static int smk_ptrace_rule_check(struct task_struct *tracer,
+ struct smack_known *tracee_known,
unsigned int mode, const char *func)
{
int rc;
struct smk_audit_info ad, *saip = NULL;
struct task_smack *tsp;
- struct smack_known *skp;
+ struct smack_known *tracer_known;
if ((mode & PTRACE_MODE_NOAUDIT) == 0) {
smk_ad_init(&ad, func, LSM_AUDIT_DATA_TASK);
}
tsp = task_security(tracer);
- skp = smk_of_task(tsp);
+ tracer_known = smk_of_task(tsp);
if ((mode & PTRACE_MODE_ATTACH) &&
(smack_ptrace_rule == SMACK_PTRACE_EXACT ||
smack_ptrace_rule == SMACK_PTRACE_DRACONIAN)) {
- if (skp->smk_known == tracee_label)
+ if (tracer_known->smk_known == tracee_known->smk_known)
rc = 0;
else if (smack_ptrace_rule == SMACK_PTRACE_DRACONIAN)
rc = -EACCES;
rc = -EACCES;
if (saip)
- smack_log(skp->smk_known, tracee_label, 0, rc, saip);
+ smack_log(tracer_known->smk_known,
+ tracee_known->smk_known,
+ 0, rc, saip);
return rc;
}
/* In case of rule==SMACK_PTRACE_DEFAULT or mode==PTRACE_MODE_READ */
- rc = smk_tskacc(tsp, tracee_label, smk_ptrace_mode(mode), saip);
+ rc = smk_tskacc(tsp, tracee_known, smk_ptrace_mode(mode), saip);
return rc;
}
skp = smk_of_task(task_security(ctp));
- rc = smk_ptrace_rule_check(current, skp->smk_known, mode, __func__);
+ rc = smk_ptrace_rule_check(current, skp, mode, __func__);
return rc;
}
skp = smk_of_task(current_security());
- rc = smk_ptrace_rule_check(ptp, skp->smk_known,
- PTRACE_MODE_ATTACH, __func__);
+ rc = smk_ptrace_rule_check(ptp, skp, PTRACE_MODE_ATTACH, __func__);
return rc;
}
if (sbsp == NULL)
return -ENOMEM;
- sbsp->smk_root = smack_known_floor.smk_known;
- sbsp->smk_default = smack_known_floor.smk_known;
- sbsp->smk_floor = smack_known_floor.smk_known;
- sbsp->smk_hat = smack_known_hat.smk_known;
+ sbsp->smk_root = &smack_known_floor;
+ sbsp->smk_default = &smack_known_floor;
+ sbsp->smk_floor = &smack_known_floor;
+ sbsp->smk_hat = &smack_known_hat;
/*
* smk_initialized will be zero from kzalloc.
*/
struct smack_known *skp;
char *op;
char *commap;
- char *nsp;
int transmute = 0;
int specified = 0;
if (strncmp(op, SMK_FSHAT, strlen(SMK_FSHAT)) == 0) {
op += strlen(SMK_FSHAT);
- nsp = smk_import(op, 0);
- if (nsp != NULL) {
- sp->smk_hat = nsp;
+ skp = smk_import_entry(op, 0);
+ if (skp != NULL) {
+ sp->smk_hat = skp;
specified = 1;
}
} else if (strncmp(op, SMK_FSFLOOR, strlen(SMK_FSFLOOR)) == 0) {
op += strlen(SMK_FSFLOOR);
- nsp = smk_import(op, 0);
- if (nsp != NULL) {
- sp->smk_floor = nsp;
+ skp = smk_import_entry(op, 0);
+ if (skp != NULL) {
+ sp->smk_floor = skp;
specified = 1;
}
} else if (strncmp(op, SMK_FSDEFAULT,
strlen(SMK_FSDEFAULT)) == 0) {
op += strlen(SMK_FSDEFAULT);
- nsp = smk_import(op, 0);
- if (nsp != NULL) {
- sp->smk_default = nsp;
+ skp = smk_import_entry(op, 0);
+ if (skp != NULL) {
+ sp->smk_default = skp;
specified = 1;
}
} else if (strncmp(op, SMK_FSROOT, strlen(SMK_FSROOT)) == 0) {
op += strlen(SMK_FSROOT);
- nsp = smk_import(op, 0);
- if (nsp != NULL) {
- sp->smk_root = nsp;
+ skp = smk_import_entry(op, 0);
+ if (skp != NULL) {
+ sp->smk_root = skp;
specified = 1;
}
} else if (strncmp(op, SMK_FSTRANS, strlen(SMK_FSTRANS)) == 0) {
op += strlen(SMK_FSTRANS);
- nsp = smk_import(op, 0);
- if (nsp != NULL) {
- sp->smk_root = nsp;
+ skp = smk_import_entry(op, 0);
+ if (skp != NULL) {
+ sp->smk_root = skp;
transmute = 1;
specified = 1;
}
* Unprivileged mounts get root and default from the caller.
*/
skp = smk_of_current();
- sp->smk_root = skp->smk_known;
- sp->smk_default = skp->smk_known;
+ sp->smk_root = skp;
+ sp->smk_default = skp;
}
/*
* Initialize the root inode.
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
rc = smk_curacc(sbp->smk_floor, MAY_READ, &ad);
+ rc = smk_bu_current("statfs", sbp->smk_floor, MAY_READ, rc);
return rc;
}
tracer = ptrace_parent(current);
if (likely(tracer != NULL))
rc = smk_ptrace_rule_check(tracer,
- isp->smk_task->smk_known,
+ isp->smk_task,
PTRACE_MODE_ATTACH,
__func__);
rcu_read_unlock();
{
struct smack_known *skp = smk_of_current();
- inode->i_security = new_inode_smack(skp->smk_known);
+ inode->i_security = new_inode_smack(skp);
if (inode->i_security == NULL)
return -ENOMEM;
return 0;
/**
* smack_inode_init_security - copy out the smack from an inode
- * @inode: the inode
- * @dir: unused
+ * @inode: the newly created inode
+ * @dir: containing directory object
* @qstr: unused
* @name: where to put the attribute name
* @value: where to put the attribute value
{
struct inode_smack *issp = inode->i_security;
struct smack_known *skp = smk_of_current();
- char *isp = smk_of_inode(inode);
- char *dsp = smk_of_inode(dir);
+ struct smack_known *isp = smk_of_inode(inode);
+ struct smack_known *dsp = smk_of_inode(dir);
int may;
if (name)
if (value) {
rcu_read_lock();
- may = smk_access_entry(skp->smk_known, dsp, &skp->smk_rules);
+ may = smk_access_entry(skp->smk_known, dsp->smk_known,
+ &skp->smk_rules);
rcu_read_unlock();
/*
issp->smk_flags |= SMK_INODE_CHANGED;
}
- *value = kstrdup(isp, GFP_NOFS);
+ *value = kstrdup(isp->smk_known, GFP_NOFS);
if (*value == NULL)
return -ENOMEM;
}
if (len)
- *len = strlen(isp) + 1;
+ *len = strlen(isp->smk_known);
return 0;
}
static int smack_inode_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *new_dentry)
{
- char *isp;
+ struct smack_known *isp;
struct smk_audit_info ad;
int rc;
isp = smk_of_inode(old_dentry->d_inode);
rc = smk_curacc(isp, MAY_WRITE, &ad);
+ rc = smk_bu_inode(old_dentry->d_inode, MAY_WRITE, rc);
if (rc == 0 && new_dentry->d_inode != NULL) {
isp = smk_of_inode(new_dentry->d_inode);
smk_ad_setfield_u_fs_path_dentry(&ad, new_dentry);
rc = smk_curacc(isp, MAY_WRITE, &ad);
+ rc = smk_bu_inode(new_dentry->d_inode, MAY_WRITE, rc);
}
return rc;
* You need write access to the thing you're unlinking
*/
rc = smk_curacc(smk_of_inode(ip), MAY_WRITE, &ad);
+ rc = smk_bu_inode(ip, MAY_WRITE, rc);
if (rc == 0) {
/*
* You also need write access to the containing directory
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_INODE);
smk_ad_setfield_u_fs_inode(&ad, dir);
rc = smk_curacc(smk_of_inode(dir), MAY_WRITE, &ad);
+ rc = smk_bu_inode(dir, MAY_WRITE, rc);
}
return rc;
}
* You need write access to the thing you're removing
*/
rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
+ rc = smk_bu_inode(dentry->d_inode, MAY_WRITE, rc);
if (rc == 0) {
/*
* You also need write access to the containing directory
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_INODE);
smk_ad_setfield_u_fs_inode(&ad, dir);
rc = smk_curacc(smk_of_inode(dir), MAY_WRITE, &ad);
+ rc = smk_bu_inode(dir, MAY_WRITE, rc);
}
return rc;
/**
* smack_inode_rename - Smack check on rename
- * @old_inode: the old directory
- * @old_dentry: unused
- * @new_inode: the new directory
- * @new_dentry: unused
+ * @old_inode: unused
+ * @old_dentry: the old object
+ * @new_inode: unused
+ * @new_dentry: the new object
*
* Read and write access is required on both the old and
* new directories.
struct dentry *new_dentry)
{
int rc;
- char *isp;
+ struct smack_known *isp;
struct smk_audit_info ad;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
isp = smk_of_inode(old_dentry->d_inode);
rc = smk_curacc(isp, MAY_READWRITE, &ad);
+ rc = smk_bu_inode(old_dentry->d_inode, MAY_READWRITE, rc);
if (rc == 0 && new_dentry->d_inode != NULL) {
isp = smk_of_inode(new_dentry->d_inode);
smk_ad_setfield_u_fs_path_dentry(&ad, new_dentry);
rc = smk_curacc(isp, MAY_READWRITE, &ad);
+ rc = smk_bu_inode(new_dentry->d_inode, MAY_READWRITE, rc);
}
return rc;
}
{
struct smk_audit_info ad;
int no_block = mask & MAY_NOT_BLOCK;
+ int rc;
mask &= (MAY_READ|MAY_WRITE|MAY_EXEC|MAY_APPEND);
/*
return -ECHILD;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_INODE);
smk_ad_setfield_u_fs_inode(&ad, inode);
- return smk_curacc(smk_of_inode(inode), mask, &ad);
+ rc = smk_curacc(smk_of_inode(inode), mask, &ad);
+ rc = smk_bu_inode(inode, mask, rc);
+ return rc;
}
/**
static int smack_inode_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct smk_audit_info ad;
+ int rc;
+
/*
* Need to allow for clearing the setuid bit.
*/
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
- return smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
+ rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
+ rc = smk_bu_inode(dentry->d_inode, MAY_WRITE, rc);
+ return rc;
}
/**
* smack_inode_getattr - Smack check for getting attributes
- * @mnt: unused
+ * @mnt: vfsmount of the object
* @dentry: the object
*
* Returns 0 if access is permitted, an error code otherwise
{
struct smk_audit_info ad;
struct path path;
+ int rc;
path.dentry = dentry;
path.mnt = mnt;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, path);
- return smk_curacc(smk_of_inode(dentry->d_inode), MAY_READ, &ad);
+ rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_READ, &ad);
+ rc = smk_bu_inode(dentry->d_inode, MAY_READ, rc);
+ return rc;
}
/**
* smack_inode_setxattr - Smack check for setting xattrs
* @dentry: the object
* @name: name of the attribute
- * @value: unused
- * @size: unused
+ * @value: value of the attribute
+ * @size: size of the value
* @flags: unused
*
* This protects the Smack attribute explicitly.
rc = -EPERM;
if (rc == 0 && check_import) {
- skp = smk_import_entry(value, size);
+ skp = size ? smk_import_entry(value, size) : NULL;
if (skp == NULL || (check_star &&
(skp == &smack_known_star || skp == &smack_known_web)))
rc = -EINVAL;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
- if (rc == 0)
+ if (rc == 0) {
rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
+ rc = smk_bu_inode(dentry->d_inode, MAY_WRITE, rc);
+ }
return rc;
}
if (strcmp(name, XATTR_NAME_SMACK) == 0) {
skp = smk_import_entry(value, size);
if (skp != NULL)
- isp->smk_inode = skp->smk_known;
+ isp->smk_inode = skp;
else
- isp->smk_inode = smack_known_invalid.smk_known;
+ isp->smk_inode = &smack_known_invalid;
} else if (strcmp(name, XATTR_NAME_SMACKEXEC) == 0) {
skp = smk_import_entry(value, size);
if (skp != NULL)
static int smack_inode_getxattr(struct dentry *dentry, const char *name)
{
struct smk_audit_info ad;
+ int rc;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_DENTRY);
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
- return smk_curacc(smk_of_inode(dentry->d_inode), MAY_READ, &ad);
+ rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_READ, &ad);
+ rc = smk_bu_inode(dentry->d_inode, MAY_READ, rc);
+ return rc;
}
/**
smk_ad_setfield_u_fs_path_dentry(&ad, dentry);
rc = smk_curacc(smk_of_inode(dentry->d_inode), MAY_WRITE, &ad);
+ rc = smk_bu_inode(dentry->d_inode, MAY_WRITE, rc);
if (rc != 0)
return rc;
struct socket *sock;
struct super_block *sbp;
struct inode *ip = (struct inode *)inode;
- char *isp;
+ struct smack_known *isp;
int ilen;
int rc = 0;
if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
isp = smk_of_inode(inode);
- ilen = strlen(isp) + 1;
- *buffer = isp;
+ ilen = strlen(isp->smk_known);
+ *buffer = isp->smk_known;
return ilen;
}
ssp = sock->sk->sk_security;
if (strcmp(name, XATTR_SMACK_IPIN) == 0)
- isp = ssp->smk_in->smk_known;
+ isp = ssp->smk_in;
else if (strcmp(name, XATTR_SMACK_IPOUT) == 0)
- isp = ssp->smk_out->smk_known;
+ isp = ssp->smk_out;
else
return -EOPNOTSUPP;
- ilen = strlen(isp) + 1;
+ ilen = strlen(isp->smk_known);
if (rc == 0) {
- *buffer = isp;
+ *buffer = isp->smk_known;
rc = ilen;
}
static int smack_inode_listsecurity(struct inode *inode, char *buffer,
size_t buffer_size)
{
- int len = strlen(XATTR_NAME_SMACK);
+ int len = sizeof(XATTR_NAME_SMACK);
- if (buffer != NULL && len <= buffer_size) {
+ if (buffer != NULL && len <= buffer_size)
memcpy(buffer, XATTR_NAME_SMACK, len);
- return len;
- }
- return -EINVAL;
+
+ return len;
}
/**
{
struct inode_smack *isp = inode->i_security;
- *secid = smack_to_secid(isp->smk_inode);
+ *secid = isp->smk_inode->smk_secid;
}
/*
{
struct smack_known *skp = smk_of_current();
- file->f_security = skp->smk_known;
+ file->f_security = skp;
return 0;
}
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- if (_IOC_DIR(cmd) & _IOC_WRITE)
+ if (_IOC_DIR(cmd) & _IOC_WRITE) {
rc = smk_curacc(file->f_security, MAY_WRITE, &ad);
+ rc = smk_bu_file(file, MAY_WRITE, rc);
+ }
- if (rc == 0 && (_IOC_DIR(cmd) & _IOC_READ))
+ if (rc == 0 && (_IOC_DIR(cmd) & _IOC_READ)) {
rc = smk_curacc(file->f_security, MAY_READ, &ad);
+ rc = smk_bu_file(file, MAY_READ, rc);
+ }
return rc;
}
static int smack_file_lock(struct file *file, unsigned int cmd)
{
struct smk_audit_info ad;
+ int rc;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
- return smk_curacc(file->f_security, MAY_LOCK, &ad);
+ rc = smk_curacc(file->f_security, MAY_LOCK, &ad);
+ rc = smk_bu_file(file, MAY_LOCK, rc);
+ return rc;
}
/**
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
rc = smk_curacc(file->f_security, MAY_LOCK, &ad);
+ rc = smk_bu_file(file, MAY_LOCK, rc);
break;
case F_SETOWN:
case F_SETSIG:
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
rc = smk_curacc(file->f_security, MAY_WRITE, &ad);
+ rc = smk_bu_file(file, MAY_WRITE, rc);
break;
default:
break;
struct smack_known *mkp;
struct smack_rule *srp;
struct task_smack *tsp;
- char *osmack;
+ struct smack_known *okp;
struct inode_smack *isp;
int may;
int mmay;
* to that rule's object label.
*/
list_for_each_entry_rcu(srp, &skp->smk_rules, list) {
- osmack = srp->smk_object;
+ okp = srp->smk_object;
/*
* Matching labels always allows access.
*/
- if (mkp->smk_known == osmack)
+ if (mkp->smk_known == okp->smk_known)
continue;
/*
* If there is a matching local rule take
* that into account as well.
*/
- may = smk_access_entry(srp->smk_subject->smk_known, osmack,
- &tsp->smk_rules);
+ may = smk_access_entry(srp->smk_subject->smk_known,
+ okp->smk_known,
+ &tsp->smk_rules);
if (may == -ENOENT)
may = srp->smk_access;
else
* If there isn't one a SMACK64MMAP subject
* can't have as much access as current.
*/
- mmay = smk_access_entry(mkp->smk_known, osmack,
- &mkp->smk_rules);
+ mmay = smk_access_entry(mkp->smk_known, okp->smk_known,
+ &mkp->smk_rules);
if (mmay == -ENOENT) {
rc = -EACCES;
break;
* If there is a local entry it modifies the
* potential access, too.
*/
- tmay = smk_access_entry(mkp->smk_known, osmack,
- &tsp->smk_rules);
+ tmay = smk_access_entry(mkp->smk_known, okp->smk_known,
+ &tsp->smk_rules);
if (tmay != -ENOENT)
mmay &= tmay;
* Returns 0
* Further research may be required on this one.
*/
-static int smack_file_set_fowner(struct file *file)
+static void smack_file_set_fowner(struct file *file)
{
struct smack_known *skp = smk_of_current();
- file->f_security = skp->smk_known;
- return 0;
+ file->f_security = skp;
}
/**
file = container_of(fown, struct file, f_owner);
/* we don't log here as rc can be overriden */
- skp = smk_find_entry(file->f_security);
- rc = smk_access(skp, tkp->smk_known, MAY_WRITE, NULL);
+ skp = file->f_security;
+ rc = smk_access(skp, tkp, MAY_WRITE, NULL);
+ rc = smk_bu_note("sigiotask", skp, tkp, MAY_WRITE, rc);
if (rc != 0 && has_capability(tsk, CAP_MAC_OVERRIDE))
rc = 0;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, tsk);
- smack_log(file->f_security, tkp->smk_known, MAY_WRITE, rc, &ad);
+ smack_log(skp->smk_known, tkp->smk_known, MAY_WRITE, rc, &ad);
return rc;
}
*/
static int smack_file_receive(struct file *file)
{
+ int rc;
int may = 0;
struct smk_audit_info ad;
if (file->f_mode & FMODE_WRITE)
may |= MAY_WRITE;
- return smk_curacc(file->f_security, may, &ad);
+ rc = smk_curacc(file->f_security, may, &ad);
+ rc = smk_bu_file(file, may, rc);
+ return rc;
}
/**
struct smk_audit_info ad;
int rc;
- if (smack_privileged(CAP_MAC_OVERRIDE))
+ if (smack_privileged(CAP_MAC_OVERRIDE)) {
+ file->f_security = isp->smk_inode;
return 0;
+ }
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_PATH);
smk_ad_setfield_u_fs_path(&ad, file->f_path);
rc = smk_access(tsp->smk_task, isp->smk_inode, MAY_READ, &ad);
+ rc = smk_bu_credfile(cred, file, MAY_READ, rc);
if (rc == 0)
file->f_security = isp->smk_inode;
struct inode_smack *isp = inode->i_security;
struct task_smack *tsp = new->security;
- tsp->smk_forked = smk_find_entry(isp->smk_inode);
+ tsp->smk_forked = isp->smk_inode;
tsp->smk_task = tsp->smk_forked;
return 0;
}
{
struct smk_audit_info ad;
struct smack_known *skp = smk_of_task(task_security(p));
+ int rc;
smk_ad_init(&ad, caller, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, p);
- return smk_curacc(skp->smk_known, access, &ad);
+ rc = smk_curacc(skp, access, &ad);
+ rc = smk_bu_task(p, access, rc);
+ return rc;
}
/**
struct smk_audit_info ad;
struct smack_known *skp;
struct smack_known *tkp = smk_of_task(task_security(p));
+ int rc;
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_TASK);
smk_ad_setfield_u_tsk(&ad, p);
* Sending a signal requires that the sender
* can write the receiver.
*/
- if (secid == 0)
- return smk_curacc(tkp->smk_known, MAY_WRITE, &ad);
+ if (secid == 0) {
+ rc = smk_curacc(tkp, MAY_WRITE, &ad);
+ rc = smk_bu_task(p, MAY_WRITE, rc);
+ return rc;
+ }
/*
* If the secid isn't 0 we're dealing with some USB IO
* specific behavior. This is not clean. For one thing
* we can't take privilege into account.
*/
skp = smack_from_secid(secid);
- return smk_access(skp, tkp->smk_known, MAY_WRITE, &ad);
+ rc = smk_access(skp, tkp, MAY_WRITE, &ad);
+ rc = smk_bu_note("USB signal", skp, tkp, MAY_WRITE, rc);
+ return rc;
}
/**
struct inode_smack *isp = inode->i_security;
struct smack_known *skp = smk_of_task(task_security(p));
- isp->smk_inode = skp->smk_known;
+ isp->smk_inode = skp;
}
/*
*
* Returns the label of the far end or NULL if it's not special.
*/
-static char *smack_host_label(struct sockaddr_in *sip)
+static struct smack_known *smack_host_label(struct sockaddr_in *sip)
{
struct smk_netlbladdr *snp;
struct in_addr *siap = &sip->sin_addr;
if ((&snp->smk_host.sin_addr)->s_addr ==
(siap->s_addr & (&snp->smk_mask)->s_addr)) {
/* we have found the special CIPSO option */
- if (snp->smk_label == smack_cipso_option)
+ if (snp->smk_label == &smack_cipso_option)
return NULL;
return snp->smk_label;
}
struct smack_known *skp;
int rc;
int sk_lbl;
- char *hostsp;
+ struct smack_known *hkp;
struct socket_smack *ssp = sk->sk_security;
struct smk_audit_info ad;
rcu_read_lock();
- hostsp = smack_host_label(sap);
- if (hostsp != NULL) {
+ hkp = smack_host_label(sap);
+ if (hkp != NULL) {
#ifdef CONFIG_AUDIT
struct lsm_network_audit net;
#endif
sk_lbl = SMACK_UNLABELED_SOCKET;
skp = ssp->smk_out;
- rc = smk_access(skp, hostsp, MAY_WRITE, &ad);
+ rc = smk_access(skp, hkp, MAY_WRITE, &ad);
+ rc = smk_bu_note("IPv4 host check", skp, hkp, MAY_WRITE, rc);
} else {
sk_lbl = SMACK_CIPSO_SOCKET;
rc = 0;
struct socket_smack *ssp = sk->sk_security;
struct smack_known *skp;
unsigned short port = 0;
- char *object;
+ struct smack_known *object;
struct smk_audit_info ad;
+ int rc;
#ifdef CONFIG_AUDIT
struct lsm_network_audit net;
#endif
if (act == SMK_RECEIVING) {
skp = smack_net_ambient;
- object = ssp->smk_in->smk_known;
+ object = ssp->smk_in;
} else {
skp = ssp->smk_out;
- object = smack_net_ambient->smk_known;
+ object = smack_net_ambient;
}
/*
list_for_each_entry(spp, &smk_ipv6_port_list, list) {
if (spp->smk_port != port)
continue;
- object = spp->smk_in->smk_known;
+ object = spp->smk_in;
if (act == SMK_CONNECTING)
ssp->smk_packet = spp->smk_out;
break;
else
ad.a.u.net->v6info.daddr = address->sin6_addr;
#endif
- return smk_access(skp, object, MAY_WRITE, &ad);
+ rc = smk_access(skp, object, MAY_WRITE, &ad);
+ rc = smk_bu_note("IPv6 port check", skp, object, MAY_WRITE, rc);
+ return rc;
}
/**
return -EINVAL;
if (strcmp(name, XATTR_SMACK_SUFFIX) == 0) {
- nsp->smk_inode = skp->smk_known;
+ nsp->smk_inode = skp;
nsp->smk_flags |= SMK_INODE_INSTANT;
return 0;
}
{
struct smack_known *skp = smk_of_current();
- msg->security = skp->smk_known;
+ msg->security = skp;
return 0;
}
*
* Returns a pointer to the smack value
*/
-static char *smack_of_shm(struct shmid_kernel *shp)
+static struct smack_known *smack_of_shm(struct shmid_kernel *shp)
{
- return (char *)shp->shm_perm.security;
+ return (struct smack_known *)shp->shm_perm.security;
}
/**
struct kern_ipc_perm *isp = &shp->shm_perm;
struct smack_known *skp = smk_of_current();
- isp->security = skp->smk_known;
+ isp->security = skp;
return 0;
}
*/
static int smk_curacc_shm(struct shmid_kernel *shp, int access)
{
- char *ssp = smack_of_shm(shp);
+ struct smack_known *ssp = smack_of_shm(shp);
struct smk_audit_info ad;
+ int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
ad.a.u.ipc_id = shp->shm_perm.id;
#endif
- return smk_curacc(ssp, access, &ad);
+ rc = smk_curacc(ssp, access, &ad);
+ rc = smk_bu_current("shm", ssp, access, rc);
+ return rc;
}
/**
*
* Returns a pointer to the smack value
*/
-static char *smack_of_sem(struct sem_array *sma)
+static struct smack_known *smack_of_sem(struct sem_array *sma)
{
- return (char *)sma->sem_perm.security;
+ return (struct smack_known *)sma->sem_perm.security;
}
/**
struct kern_ipc_perm *isp = &sma->sem_perm;
struct smack_known *skp = smk_of_current();
- isp->security = skp->smk_known;
+ isp->security = skp;
return 0;
}
*/
static int smk_curacc_sem(struct sem_array *sma, int access)
{
- char *ssp = smack_of_sem(sma);
+ struct smack_known *ssp = smack_of_sem(sma);
struct smk_audit_info ad;
+ int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
ad.a.u.ipc_id = sma->sem_perm.id;
#endif
- return smk_curacc(ssp, access, &ad);
+ rc = smk_curacc(ssp, access, &ad);
+ rc = smk_bu_current("sem", ssp, access, rc);
+ return rc;
}
/**
struct kern_ipc_perm *kisp = &msq->q_perm;
struct smack_known *skp = smk_of_current();
- kisp->security = skp->smk_known;
+ kisp->security = skp;
return 0;
}
* smack_of_msq - the smack pointer for the msq
* @msq: the object
*
- * Returns a pointer to the smack value
+ * Returns a pointer to the smack label entry
*/
-static char *smack_of_msq(struct msg_queue *msq)
+static struct smack_known *smack_of_msq(struct msg_queue *msq)
{
- return (char *)msq->q_perm.security;
+ return (struct smack_known *)msq->q_perm.security;
}
/**
*/
static int smk_curacc_msq(struct msg_queue *msq, int access)
{
- char *msp = smack_of_msq(msq);
+ struct smack_known *msp = smack_of_msq(msq);
struct smk_audit_info ad;
+ int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
ad.a.u.ipc_id = msq->q_perm.id;
#endif
- return smk_curacc(msp, access, &ad);
+ rc = smk_curacc(msp, access, &ad);
+ rc = smk_bu_current("msq", msp, access, rc);
+ return rc;
}
/**
*/
static int smack_ipc_permission(struct kern_ipc_perm *ipp, short flag)
{
- char *isp = ipp->security;
+ struct smack_known *iskp = ipp->security;
int may = smack_flags_to_may(flag);
struct smk_audit_info ad;
+ int rc;
#ifdef CONFIG_AUDIT
smk_ad_init(&ad, __func__, LSM_AUDIT_DATA_IPC);
ad.a.u.ipc_id = ipp->id;
#endif
- return smk_curacc(isp, may, &ad);
+ rc = smk_curacc(iskp, may, &ad);
+ rc = smk_bu_current("svipc", iskp, may, rc);
+ return rc;
}
/**
*/
static void smack_ipc_getsecid(struct kern_ipc_perm *ipp, u32 *secid)
{
- char *smack = ipp->security;
+ struct smack_known *iskp = ipp->security;
- *secid = smack_to_secid(smack);
+ *secid = iskp->smk_secid;
}
/**
struct inode_smack *isp;
struct smack_known *skp;
struct smack_known *ckp = smk_of_current();
- char *final;
+ struct smack_known *final;
char trattr[TRANS_TRUE_SIZE];
int transflag = 0;
int rc;
* so there's no opportunity to set the mount
* options.
*/
- sbsp->smk_root = smack_known_star.smk_known;
- sbsp->smk_default = smack_known_star.smk_known;
+ sbsp->smk_root = &smack_known_star;
+ sbsp->smk_default = &smack_known_star;
}
isp->smk_inode = sbsp->smk_root;
isp->smk_flags |= SMK_INODE_INSTANT;
*
* Cgroupfs is special
*/
- final = smack_known_star.smk_known;
+ final = &smack_known_star;
break;
case DEVPTS_SUPER_MAGIC:
/*
* Programs that change smack have to treat the
* pty with respect.
*/
- final = ckp->smk_known;
+ final = ckp;
break;
case PROC_SUPER_MAGIC:
/*
* but watch out, because they're volitile,
* getting recreated on every reboot.
*/
- final = smack_known_star.smk_known;
+ final = &smack_known_star;
/*
* No break.
*
* UNIX domain sockets use lower level socket data.
*/
if (S_ISSOCK(inode->i_mode)) {
- final = smack_known_star.smk_known;
+ final = &smack_known_star;
break;
}
/*
dp = dget(opt_dentry);
skp = smk_fetch(XATTR_NAME_SMACK, inode, dp);
if (skp != NULL)
- final = skp->smk_known;
+ final = skp;
/*
* Transmuting directory
}
if (final == NULL)
- isp->smk_inode = ckp->smk_known;
+ isp->smk_inode = ckp;
else
isp->smk_inode = final;
smk_ad_init_net(&ad, __func__, LSM_AUDIT_DATA_NET, &net);
smk_ad_setfield_u_net_sk(&ad, other);
#endif
- rc = smk_access(skp, okp->smk_known, MAY_WRITE, &ad);
- if (rc == 0)
- rc = smk_access(okp, okp->smk_known, MAY_WRITE, NULL);
+ rc = smk_access(skp, okp, MAY_WRITE, &ad);
+ rc = smk_bu_note("UDS connect", skp, okp, MAY_WRITE, rc);
+ if (rc == 0) {
+ rc = smk_access(okp, skp, MAY_WRITE, NULL);
+ rc = smk_bu_note("UDS connect", okp, skp,
+ MAY_WRITE, rc);
+ }
}
/*
{
struct socket_smack *ssp = sock->sk->sk_security;
struct socket_smack *osp = other->sk->sk_security;
- struct smack_known *skp;
struct smk_audit_info ad;
+ int rc;
#ifdef CONFIG_AUDIT
struct lsm_network_audit net;
if (smack_privileged(CAP_MAC_OVERRIDE))
return 0;
- skp = ssp->smk_out;
- return smk_access(skp, osp->smk_in->smk_known, MAY_WRITE, &ad);
+ rc = smk_access(ssp->smk_out, osp->smk_in, MAY_WRITE, &ad);
+ rc = smk_bu_note("UDS send", ssp->smk_out, osp->smk_in, MAY_WRITE, rc);
+ return rc;
}
/**
* This is the simplist possible security model
* for networking.
*/
- rc = smk_access(skp, ssp->smk_in->smk_known, MAY_WRITE, &ad);
+ rc = smk_access(skp, ssp->smk_in, MAY_WRITE, &ad);
+ rc = smk_bu_note("IPv4 delivery", skp, ssp->smk_in,
+ MAY_WRITE, rc);
if (rc != 0)
netlbl_skbuff_err(skb, rc, 0);
break;
struct netlbl_lsm_secattr secattr;
struct sockaddr_in addr;
struct iphdr *hdr;
- char *hsp;
+ struct smack_known *hskp;
int rc;
struct smk_audit_info ad;
#ifdef CONFIG_AUDIT
* Receiving a packet requires that the other end be able to write
* here. Read access is not required.
*/
- rc = smk_access(skp, ssp->smk_in->smk_known, MAY_WRITE, &ad);
+ rc = smk_access(skp, ssp->smk_in, MAY_WRITE, &ad);
+ rc = smk_bu_note("IPv4 connect", skp, ssp->smk_in, MAY_WRITE, rc);
if (rc != 0)
return rc;
hdr = ip_hdr(skb);
addr.sin_addr.s_addr = hdr->saddr;
rcu_read_lock();
- hsp = smack_host_label(&addr);
+ hskp = smack_host_label(&addr);
rcu_read_unlock();
- if (hsp == NULL)
+ if (hskp == NULL)
rc = netlbl_req_setattr(req, &skp->smk_netlabel);
else
netlbl_req_delattr(req);
{
struct smack_known *skp = smk_of_task(cred->security);
- key->security = skp->smk_known;
+ key->security = skp;
return 0;
}
struct smk_audit_info ad;
struct smack_known *tkp = smk_of_task(cred->security);
int request = 0;
+ int rc;
keyp = key_ref_to_ptr(key_ref);
if (keyp == NULL)
request = MAY_READ;
if (perm & (KEY_NEED_WRITE | KEY_NEED_LINK | KEY_NEED_SETATTR))
request = MAY_WRITE;
- return smk_access(tkp, keyp->security, request, &ad);
+ rc = smk_access(tkp, keyp->security, request, &ad);
+ rc = smk_bu_note("key access", tkp, keyp->security, request, rc);
+ return rc;
}
#endif /* CONFIG_KEYS */
*/
static int smack_audit_rule_init(u32 field, u32 op, char *rulestr, void **vrule)
{
+ struct smack_known *skp;
char **rule = (char **)vrule;
*rule = NULL;
if (op != Audit_equal && op != Audit_not_equal)
return -EINVAL;
- *rule = smk_import(rulestr, 0);
+ skp = smk_import_entry(rulestr, 0);
+ if (skp)
+ *rule = skp->smk_known;
return 0;
}
*/
static int smack_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
{
- *secid = smack_to_secid(secdata);
+ struct smack_known *skp = smk_find_entry(secdata);
+
+ if (skp)
+ *secid = skp->smk_secid;
+ else
+ *secid = 0;
return 0;
}
projects / cascardo / linux.git / blobdiff