mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-15 21:30:43 +00:00
apparmor: add interface files for profiles and namespaces
Add basic interface files to access namespace and profile information. The interface files are created when a profile is loaded and removed when the profile or namespace is removed. Signed-off-by: John Johansen <john.johansen@canonical.com>
This commit is contained in:
John Johansen
parent
038165070a
commit
0d259f043f
@ -12,6 +12,7 @@
|
||||
* License.
|
||||
*/
|
||||
|
||||
#include <linux/ctype.h>
|
||||
#include <linux/security.h>
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/module.h>
|
||||
@ -27,6 +28,45 @@
|
||||
#include "include/policy.h"
|
||||
#include "include/resource.h"
|
||||
|
||||
/**
|
||||
* aa_mangle_name - mangle a profile name to std profile layout form
|
||||
* @name: profile name to mangle (NOT NULL)
|
||||
* @target: buffer to store mangled name, same length as @name (MAYBE NULL)
|
||||
*
|
||||
* Returns: length of mangled name
|
||||
*/
|
||||
static int mangle_name(char *name, char *target)
|
||||
{
|
||||
char *t = target;
|
||||
|
||||
while (*name == '/' || *name == '.')
|
||||
name++;
|
||||
|
||||
if (target) {
|
||||
for (; *name; name++) {
|
||||
if (*name == '/')
|
||||
*(t)++ = '.';
|
||||
else if (isspace(*name))
|
||||
*(t)++ = '_';
|
||||
else if (isalnum(*name) || strchr("._-", *name))
|
||||
*(t)++ = *name;
|
||||
}
|
||||
|
||||
*t = 0;
|
||||
} else {
|
||||
int len = 0;
|
||||
for (; *name; name++) {
|
||||
if (isalnum(*name) || isspace(*name) ||
|
||||
strchr("/._-", *name))
|
||||
len++;
|
||||
}
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
return t - target;
|
||||
}
|
||||
|
||||
/**
|
||||
* aa_simple_write_to_buffer - common routine for getting policy from user
|
||||
* @op: operation doing the user buffer copy
|
||||
@ -182,8 +222,263 @@ const struct file_operations aa_fs_seq_file_ops = {
|
||||
.release = single_release,
|
||||
};
|
||||
|
||||
/** Base file system setup **/
|
||||
static int aa_fs_seq_profile_open(struct inode *inode, struct file *file,
|
||||
int (*show)(struct seq_file *, void *))
|
||||
{
|
||||
struct aa_replacedby *r = aa_get_replacedby(inode->i_private);
|
||||
int error = single_open(file, show, r);
|
||||
|
||||
if (error) {
|
||||
file->private_data = NULL;
|
||||
aa_put_replacedby(r);
|
||||
}
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
static int aa_fs_seq_profile_release(struct inode *inode, struct file *file)
|
||||
{
|
||||
struct seq_file *seq = (struct seq_file *) file->private_data;
|
||||
if (seq)
|
||||
aa_put_replacedby(seq->private);
|
||||
return single_release(inode, file);
|
||||
}
|
||||
|
||||
static int aa_fs_seq_profname_show(struct seq_file *seq, void *v)
|
||||
{
|
||||
struct aa_replacedby *r = seq->private;
|
||||
struct aa_profile *profile = aa_get_profile_rcu(&r->profile);
|
||||
seq_printf(seq, "%s\n", profile->base.name);
|
||||
aa_put_profile(profile);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int aa_fs_seq_profname_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return aa_fs_seq_profile_open(inode, file, aa_fs_seq_profname_show);
|
||||
}
|
||||
|
||||
static const struct file_operations aa_fs_profname_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = aa_fs_seq_profname_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = aa_fs_seq_profile_release,
|
||||
};
|
||||
|
||||
static int aa_fs_seq_profmode_show(struct seq_file *seq, void *v)
|
||||
{
|
||||
struct aa_replacedby *r = seq->private;
|
||||
struct aa_profile *profile = aa_get_profile_rcu(&r->profile);
|
||||
seq_printf(seq, "%s\n", aa_profile_mode_names[profile->mode]);
|
||||
aa_put_profile(profile);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int aa_fs_seq_profmode_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return aa_fs_seq_profile_open(inode, file, aa_fs_seq_profmode_show);
|
||||
}
|
||||
|
||||
static const struct file_operations aa_fs_profmode_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = aa_fs_seq_profmode_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = aa_fs_seq_profile_release,
|
||||
};
|
||||
|
||||
/** fns to setup dynamic per profile/namespace files **/
|
||||
void __aa_fs_profile_rmdir(struct aa_profile *profile)
|
||||
{
|
||||
struct aa_profile *child;
|
||||
int i;
|
||||
|
||||
if (!profile)
|
||||
return;
|
||||
|
||||
list_for_each_entry(child, &profile->base.profiles, base.list)
|
||||
__aa_fs_profile_rmdir(child);
|
||||
|
||||
for (i = AAFS_PROF_SIZEOF - 1; i >= 0; --i) {
|
||||
struct aa_replacedby *r;
|
||||
if (!profile->dents[i])
|
||||
continue;
|
||||
|
||||
r = profile->dents[i]->d_inode->i_private;
|
||||
securityfs_remove(profile->dents[i]);
|
||||
aa_put_replacedby(r);
|
||||
profile->dents[i] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
void __aa_fs_profile_migrate_dents(struct aa_profile *old,
|
||||
struct aa_profile *new)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < AAFS_PROF_SIZEOF; i++) {
|
||||
new->dents[i] = old->dents[i];
|
||||
old->dents[i] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
static struct dentry *create_profile_file(struct dentry *dir, const char *name,
|
||||
struct aa_profile *profile,
|
||||
const struct file_operations *fops)
|
||||
{
|
||||
struct aa_replacedby *r = aa_get_replacedby(profile->replacedby);
|
||||
struct dentry *dent;
|
||||
|
||||
dent = securityfs_create_file(name, S_IFREG | 0444, dir, r, fops);
|
||||
if (IS_ERR(dent))
|
||||
aa_put_replacedby(r);
|
||||
|
||||
return dent;
|
||||
}
|
||||
|
||||
/* requires lock be held */
|
||||
int __aa_fs_profile_mkdir(struct aa_profile *profile, struct dentry *parent)
|
||||
{
|
||||
struct aa_profile *child;
|
||||
struct dentry *dent = NULL, *dir;
|
||||
int error;
|
||||
|
||||
if (!parent) {
|
||||
struct aa_profile *p;
|
||||
p = aa_deref_parent(profile);
|
||||
dent = prof_dir(p);
|
||||
/* adding to parent that previously didn't have children */
|
||||
dent = securityfs_create_dir("profiles", dent);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
prof_child_dir(p) = parent = dent;
|
||||
}
|
||||
|
||||
if (!profile->dirname) {
|
||||
int len, id_len;
|
||||
len = mangle_name(profile->base.name, NULL);
|
||||
id_len = snprintf(NULL, 0, ".%ld", profile->ns->uniq_id);
|
||||
|
||||
profile->dirname = kmalloc(len + id_len + 1, GFP_KERNEL);
|
||||
if (!profile->dirname)
|
||||
goto fail;
|
||||
|
||||
mangle_name(profile->base.name, profile->dirname);
|
||||
sprintf(profile->dirname + len, ".%ld", profile->ns->uniq_id++);
|
||||
}
|
||||
|
||||
dent = securityfs_create_dir(profile->dirname, parent);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
prof_dir(profile) = dir = dent;
|
||||
|
||||
dent = create_profile_file(dir, "name", profile, &aa_fs_profname_fops);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
profile->dents[AAFS_PROF_NAME] = dent;
|
||||
|
||||
dent = create_profile_file(dir, "mode", profile, &aa_fs_profmode_fops);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
profile->dents[AAFS_PROF_MODE] = dent;
|
||||
|
||||
list_for_each_entry(child, &profile->base.profiles, base.list) {
|
||||
error = __aa_fs_profile_mkdir(child, prof_child_dir(profile));
|
||||
if (error)
|
||||
goto fail2;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
error = PTR_ERR(dent);
|
||||
|
||||
fail2:
|
||||
__aa_fs_profile_rmdir(profile);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
void __aa_fs_namespace_rmdir(struct aa_namespace *ns)
|
||||
{
|
||||
struct aa_namespace *sub;
|
||||
struct aa_profile *child;
|
||||
int i;
|
||||
|
||||
if (!ns)
|
||||
return;
|
||||
|
||||
list_for_each_entry(child, &ns->base.profiles, base.list)
|
||||
__aa_fs_profile_rmdir(child);
|
||||
|
||||
list_for_each_entry(sub, &ns->sub_ns, base.list) {
|
||||
mutex_lock(&sub->lock);
|
||||
__aa_fs_namespace_rmdir(sub);
|
||||
mutex_unlock(&sub->lock);
|
||||
}
|
||||
|
||||
for (i = AAFS_NS_SIZEOF - 1; i >= 0; --i) {
|
||||
securityfs_remove(ns->dents[i]);
|
||||
ns->dents[i] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
int __aa_fs_namespace_mkdir(struct aa_namespace *ns, struct dentry *parent,
|
||||
const char *name)
|
||||
{
|
||||
struct aa_namespace *sub;
|
||||
struct aa_profile *child;
|
||||
struct dentry *dent, *dir;
|
||||
int error;
|
||||
|
||||
if (!name)
|
||||
name = ns->base.name;
|
||||
|
||||
dent = securityfs_create_dir(name, parent);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
ns_dir(ns) = dir = dent;
|
||||
|
||||
dent = securityfs_create_dir("profiles", dir);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
ns_subprofs_dir(ns) = dent;
|
||||
|
||||
dent = securityfs_create_dir("namespaces", dir);
|
||||
if (IS_ERR(dent))
|
||||
goto fail;
|
||||
ns_subns_dir(ns) = dent;
|
||||
|
||||
list_for_each_entry(child, &ns->base.profiles, base.list) {
|
||||
error = __aa_fs_profile_mkdir(child, ns_subprofs_dir(ns));
|
||||
if (error)
|
||||
goto fail2;
|
||||
}
|
||||
|
||||
list_for_each_entry(sub, &ns->sub_ns, base.list) {
|
||||
mutex_lock(&sub->lock);
|
||||
error = __aa_fs_namespace_mkdir(sub, ns_subns_dir(ns), NULL);
|
||||
mutex_unlock(&sub->lock);
|
||||
if (error)
|
||||
goto fail2;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
fail:
|
||||
error = PTR_ERR(dent);
|
||||
|
||||
fail2:
|
||||
__aa_fs_namespace_rmdir(ns);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
/** Base file system setup **/
|
||||
static struct aa_fs_entry aa_fs_entry_file[] = {
|
||||
AA_FS_FILE_STRING("mask", "create read write exec append mmap_exec " \
|
||||
"link lock"),
|
||||
@ -246,6 +541,7 @@ static int __init aafs_create_file(struct aa_fs_entry *fs_file,
|
||||
return error;
|
||||
}
|
||||
|
||||
static void __init aafs_remove_dir(struct aa_fs_entry *fs_dir);
|
||||
/**
|
||||
* aafs_create_dir - recursively create a directory entry in the securityfs
|
||||
* @fs_dir: aa_fs_entry (and all child entries) to build (NOT NULL)
|
||||
@ -256,17 +552,16 @@ static int __init aafs_create_file(struct aa_fs_entry *fs_file,
|
||||
static int __init aafs_create_dir(struct aa_fs_entry *fs_dir,
|
||||
struct dentry *parent)
|
||||
{
|
||||
int error;
|
||||
struct aa_fs_entry *fs_file;
|
||||
struct dentry *dir;
|
||||
int error;
|
||||
|
||||
fs_dir->dentry = securityfs_create_dir(fs_dir->name, parent);
|
||||
if (IS_ERR(fs_dir->dentry)) {
|
||||
error = PTR_ERR(fs_dir->dentry);
|
||||
fs_dir->dentry = NULL;
|
||||
goto failed;
|
||||
}
|
||||
dir = securityfs_create_dir(fs_dir->name, parent);
|
||||
if (IS_ERR(dir))
|
||||
return PTR_ERR(dir);
|
||||
fs_dir->dentry = dir;
|
||||
|
||||
for (fs_file = fs_dir->v.files; fs_file->name; ++fs_file) {
|
||||
for (fs_file = fs_dir->v.files; fs_file && fs_file->name; ++fs_file) {
|
||||
if (fs_file->v_type == AA_FS_TYPE_DIR)
|
||||
error = aafs_create_dir(fs_file, fs_dir->dentry);
|
||||
else
|
||||
@ -278,6 +573,8 @@ static int __init aafs_create_dir(struct aa_fs_entry *fs_dir,
|
||||
return 0;
|
||||
|
||||
failed:
|
||||
aafs_remove_dir(fs_dir);
|
||||
|
||||
return error;
|
||||
}
|
||||
|
||||
@ -302,7 +599,7 @@ static void __init aafs_remove_dir(struct aa_fs_entry *fs_dir)
|
||||
{
|
||||
struct aa_fs_entry *fs_file;
|
||||
|
||||
for (fs_file = fs_dir->v.files; fs_file->name; ++fs_file) {
|
||||
for (fs_file = fs_dir->v.files; fs_file && fs_file->name; ++fs_file) {
|
||||
if (fs_file->v_type == AA_FS_TYPE_DIR)
|
||||
aafs_remove_dir(fs_file);
|
||||
else
|
||||
@ -346,6 +643,11 @@ static int __init aa_create_aafs(void)
|
||||
if (error)
|
||||
goto error;
|
||||
|
||||
error = __aa_fs_namespace_mkdir(root_ns, aa_fs_entry.dentry,
|
||||
"policy");
|
||||
if (error)
|
||||
goto error;
|
||||
|
||||
/* TODO: add support for apparmorfs_null and apparmorfs_mnt */
|
||||
|
||||
/* Report that AppArmor fs is enabled */
|
||||
|
||||
@ -61,4 +61,42 @@ extern const struct file_operations aa_fs_seq_file_ops;
|
||||
|
||||
extern void __init aa_destroy_aafs(void);
|
||||
|
||||
struct aa_profile;
|
||||
struct aa_namespace;
|
||||
|
||||
enum aafs_ns_type {
|
||||
AAFS_NS_DIR,
|
||||
AAFS_NS_PROFS,
|
||||
AAFS_NS_NS,
|
||||
AAFS_NS_COUNT,
|
||||
AAFS_NS_MAX_COUNT,
|
||||
AAFS_NS_SIZE,
|
||||
AAFS_NS_MAX_SIZE,
|
||||
AAFS_NS_OWNER,
|
||||
AAFS_NS_SIZEOF,
|
||||
};
|
||||
|
||||
enum aafs_prof_type {
|
||||
AAFS_PROF_DIR,
|
||||
AAFS_PROF_PROFS,
|
||||
AAFS_PROF_NAME,
|
||||
AAFS_PROF_MODE,
|
||||
AAFS_PROF_SIZEOF,
|
||||
};
|
||||
|
||||
#define ns_dir(X) ((X)->dents[AAFS_NS_DIR])
|
||||
#define ns_subns_dir(X) ((X)->dents[AAFS_NS_NS])
|
||||
#define ns_subprofs_dir(X) ((X)->dents[AAFS_NS_PROFS])
|
||||
|
||||
#define prof_dir(X) ((X)->dents[AAFS_PROF_DIR])
|
||||
#define prof_child_dir(X) ((X)->dents[AAFS_PROF_PROFS])
|
||||
|
||||
void __aa_fs_profile_rmdir(struct aa_profile *profile);
|
||||
void __aa_fs_profile_migrate_dents(struct aa_profile *old,
|
||||
struct aa_profile *new);
|
||||
int __aa_fs_profile_mkdir(struct aa_profile *profile, struct dentry *parent);
|
||||
void __aa_fs_namespace_rmdir(struct aa_namespace *ns);
|
||||
int __aa_fs_namespace_mkdir(struct aa_namespace *ns, struct dentry *parent,
|
||||
const char *name);
|
||||
|
||||
#endif /* __AA_APPARMORFS_H */
|
||||
|
||||
@ -27,7 +27,6 @@ struct aa_profile;
|
||||
|
||||
extern const char *const audit_mode_names[];
|
||||
#define AUDIT_MAX_INDEX 5
|
||||
|
||||
enum audit_mode {
|
||||
AUDIT_NORMAL, /* follow normal auditing of accesses */
|
||||
AUDIT_QUIET_DENIED, /* quiet all denied access messages */
|
||||
|
||||
@ -29,8 +29,8 @@
|
||||
#include "file.h"
|
||||
#include "resource.h"
|
||||
|
||||
extern const char *const profile_mode_names[];
|
||||
#define APPARMOR_NAMES_MAX_INDEX 3
|
||||
extern const char *const aa_profile_mode_names[];
|
||||
#define APPARMOR_MODE_NAMES_MAX_INDEX 4
|
||||
|
||||
#define PROFILE_MODE(_profile, _mode) \
|
||||
((aa_g_profile_mode == (_mode)) || \
|
||||
@ -110,6 +110,8 @@ struct aa_ns_acct {
|
||||
* @unconfined: special unconfined profile for the namespace
|
||||
* @sub_ns: list of namespaces under the current namespace.
|
||||
* @uniq_null: uniq value used for null learning profiles
|
||||
* @uniq_id: a unique id count for the profiles in the namespace
|
||||
* @dents: dentries for the namespaces file entries in apparmorfs
|
||||
*
|
||||
* An aa_namespace defines the set profiles that are searched to determine
|
||||
* which profile to attach to a task. Profiles can not be shared between
|
||||
@ -133,6 +135,9 @@ struct aa_namespace {
|
||||
struct aa_profile *unconfined;
|
||||
struct list_head sub_ns;
|
||||
atomic_t uniq_null;
|
||||
long uniq_id;
|
||||
|
||||
struct dentry *dents[AAFS_NS_SIZEOF];
|
||||
};
|
||||
|
||||
/* struct aa_policydb - match engine for a policy
|
||||
@ -172,6 +177,9 @@ struct aa_replacedby {
|
||||
* @caps: capabilities for the profile
|
||||
* @rlimits: rlimits for the profile
|
||||
*
|
||||
* @dents: dentries for the profiles file entries in apparmorfs
|
||||
* @dirname: name of the profile dir in apparmorfs
|
||||
*
|
||||
* The AppArmor profile contains the basic confinement data. Each profile
|
||||
* has a name, and exists in a namespace. The @name and @exec_match are
|
||||
* used to determine profile attachment against unconfined tasks. All other
|
||||
@ -208,6 +216,9 @@ struct aa_profile {
|
||||
struct aa_file_rules file;
|
||||
struct aa_caps caps;
|
||||
struct aa_rlimit rlimits;
|
||||
|
||||
char *dirname;
|
||||
struct dentry *dents[AAFS_PROF_SIZEOF];
|
||||
};
|
||||
|
||||
extern struct aa_namespace *root_ns;
|
||||
@ -243,6 +254,12 @@ ssize_t aa_remove_profiles(char *name, size_t size);
|
||||
#define unconfined(X) ((X)->mode == APPARMOR_UNCONFINED)
|
||||
|
||||
|
||||
static inline struct aa_profile *aa_deref_parent(struct aa_profile *p)
|
||||
{
|
||||
return rcu_dereference_protected(p->parent,
|
||||
mutex_is_locked(&p->ns->lock));
|
||||
}
|
||||
|
||||
/**
|
||||
* aa_get_profile - increment refcount on profile @p
|
||||
* @p: profile (MAYBE NULL)
|
||||
|
||||
@ -843,7 +843,7 @@ static int param_get_mode(char *buffer, struct kernel_param *kp)
|
||||
if (!apparmor_enabled)
|
||||
return -EINVAL;
|
||||
|
||||
return sprintf(buffer, "%s", profile_mode_names[aa_g_profile_mode]);
|
||||
return sprintf(buffer, "%s", aa_profile_mode_names[aa_g_profile_mode]);
|
||||
}
|
||||
|
||||
static int param_set_mode(const char *val, struct kernel_param *kp)
|
||||
@ -858,8 +858,8 @@ static int param_set_mode(const char *val, struct kernel_param *kp)
|
||||
if (!val)
|
||||
return -EINVAL;
|
||||
|
||||
for (i = 0; i < APPARMOR_NAMES_MAX_INDEX; i++) {
|
||||
if (strcmp(val, profile_mode_names[i]) == 0) {
|
||||
for (i = 0; i < APPARMOR_MODE_NAMES_MAX_INDEX; i++) {
|
||||
if (strcmp(val, aa_profile_mode_names[i]) == 0) {
|
||||
aa_g_profile_mode = i;
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -92,7 +92,7 @@
|
||||
/* root profile namespace */
|
||||
struct aa_namespace *root_ns;
|
||||
|
||||
const char *const profile_mode_names[] = {
|
||||
const char *const aa_profile_mode_names[] = {
|
||||
"enforce",
|
||||
"complain",
|
||||
"kill",
|
||||
@ -394,7 +394,13 @@ static struct aa_namespace *aa_prepare_namespace(const char *name)
|
||||
ns = alloc_namespace(root->base.hname, name);
|
||||
if (!ns)
|
||||
goto out;
|
||||
/* add parent ref */
|
||||
if (__aa_fs_namespace_mkdir(ns, ns_subns_dir(root), name)) {
|
||||
AA_ERROR("Failed to create interface for ns %s\n",
|
||||
ns->base.name);
|
||||
free_namespace(ns);
|
||||
ns = NULL;
|
||||
goto out;
|
||||
}
|
||||
ns->parent = aa_get_namespace(root);
|
||||
list_add_rcu(&ns->base.list, &root->sub_ns);
|
||||
/* add list ref */
|
||||
@ -456,6 +462,7 @@ static void __remove_profile(struct aa_profile *profile)
|
||||
__profile_list_release(&profile->base.profiles);
|
||||
/* released by free_profile */
|
||||
__aa_update_replacedby(profile, profile->ns->unconfined);
|
||||
__aa_fs_profile_rmdir(profile);
|
||||
__list_remove_profile(profile);
|
||||
}
|
||||
|
||||
@ -492,6 +499,7 @@ static void destroy_namespace(struct aa_namespace *ns)
|
||||
|
||||
if (ns->parent)
|
||||
__aa_update_replacedby(ns->unconfined, ns->parent->unconfined);
|
||||
__aa_fs_namespace_rmdir(ns);
|
||||
mutex_unlock(&ns->lock);
|
||||
}
|
||||
|
||||
@ -596,6 +604,7 @@ void aa_free_profile(struct aa_profile *profile)
|
||||
aa_free_cap_rules(&profile->caps);
|
||||
aa_free_rlimit_rules(&profile->rlimits);
|
||||
|
||||
kzfree(profile->dirname);
|
||||
aa_put_dfa(profile->xmatch);
|
||||
aa_put_dfa(profile->policy.dfa);
|
||||
aa_put_replacedby(profile->replacedby);
|
||||
@ -986,8 +995,7 @@ static void __replace_profile(struct aa_profile *old, struct aa_profile *new,
|
||||
/* inherit @child and its children */
|
||||
/* TODO: update hname of inherited children */
|
||||
/* list refcount transferred to @new */
|
||||
p = rcu_dereference_protected(child->parent,
|
||||
mutex_is_locked(&child->ns->lock));
|
||||
p = aa_deref_parent(child);
|
||||
rcu_assign_pointer(child->parent, aa_get_profile(new));
|
||||
list_add_rcu(&child->base.list, &new->base.profiles);
|
||||
aa_put_profile(p);
|
||||
@ -995,14 +1003,18 @@ static void __replace_profile(struct aa_profile *old, struct aa_profile *new,
|
||||
}
|
||||
|
||||
if (!rcu_access_pointer(new->parent)) {
|
||||
struct aa_profile *parent = rcu_dereference(old->parent);
|
||||
struct aa_profile *parent = aa_deref_parent(old);
|
||||
rcu_assign_pointer(new->parent, aa_get_profile(parent));
|
||||
}
|
||||
__aa_update_replacedby(old, new);
|
||||
if (share_replacedby) {
|
||||
aa_put_replacedby(new->replacedby);
|
||||
new->replacedby = aa_get_replacedby(old->replacedby);
|
||||
}
|
||||
} else if (!rcu_access_pointer(new->replacedby->profile))
|
||||
/* aafs interface uses replacedby */
|
||||
rcu_assign_pointer(new->replacedby->profile,
|
||||
aa_get_profile(new));
|
||||
__aa_fs_profile_migrate_dents(old, new);
|
||||
|
||||
if (list_empty(&new->base.list)) {
|
||||
/* new is not on a list already */
|
||||
@ -1118,7 +1130,33 @@ ssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace)
|
||||
}
|
||||
}
|
||||
|
||||
/* do actual replacement */
|
||||
/* create new fs entries for introspection if needed */
|
||||
list_for_each_entry(ent, &lh, list) {
|
||||
if (ent->old) {
|
||||
/* inherit old interface files */
|
||||
|
||||
/* if (ent->rename)
|
||||
TODO: support rename */
|
||||
/* } else if (ent->rename) {
|
||||
TODO: support rename */
|
||||
} else {
|
||||
struct dentry *parent;
|
||||
if (rcu_access_pointer(ent->new->parent)) {
|
||||
struct aa_profile *p;
|
||||
p = aa_deref_parent(ent->new);
|
||||
parent = prof_child_dir(p);
|
||||
} else
|
||||
parent = ns_subprofs_dir(ent->new->ns);
|
||||
error = __aa_fs_profile_mkdir(ent->new, parent);
|
||||
}
|
||||
|
||||
if (error) {
|
||||
info = "failed to create ";
|
||||
goto fail_lock;
|
||||
}
|
||||
}
|
||||
|
||||
/* Done with checks that may fail - do actual replacement */
|
||||
list_for_each_entry_safe(ent, tmp, &lh, list) {
|
||||
list_del_init(&ent->list);
|
||||
op = (!ent->old && !ent->rename) ? OP_PROF_LOAD : OP_PROF_REPL;
|
||||
@ -1127,14 +1165,21 @@ ssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace)
|
||||
|
||||
if (ent->old) {
|
||||
__replace_profile(ent->old, ent->new, 1);
|
||||
if (ent->rename)
|
||||
if (ent->rename) {
|
||||
/* aafs interface uses replacedby */
|
||||
struct aa_replacedby *r = ent->new->replacedby;
|
||||
rcu_assign_pointer(r->profile,
|
||||
aa_get_profile(ent->new));
|
||||
__replace_profile(ent->rename, ent->new, 0);
|
||||
}
|
||||
} else if (ent->rename) {
|
||||
/* aafs interface uses replacedby */
|
||||
rcu_assign_pointer(ent->new->replacedby->profile,
|
||||
aa_get_profile(ent->new));
|
||||
__replace_profile(ent->rename, ent->new, 0);
|
||||
} else if (ent->new->parent) {
|
||||
struct aa_profile *parent, *newest;
|
||||
parent = rcu_dereference_protected(ent->new->parent,
|
||||
mutex_is_locked(&ns->lock));
|
||||
parent = aa_deref_parent(ent->new);
|
||||
newest = aa_get_newest_profile(parent);
|
||||
|
||||
/* parent replaced in this atomic set? */
|
||||
@ -1144,10 +1189,16 @@ ssize_t aa_replace_profiles(void *udata, size_t size, bool noreplace)
|
||||
rcu_assign_pointer(ent->new->parent, newest);
|
||||
} else
|
||||
aa_put_profile(newest);
|
||||
/* aafs interface uses replacedby */
|
||||
rcu_assign_pointer(ent->new->replacedby->profile,
|
||||
aa_get_profile(ent->new));
|
||||
__list_add_profile(&parent->base.profiles, ent->new);
|
||||
} else
|
||||
} else {
|
||||
/* aafs interface uses replacedby */
|
||||
rcu_assign_pointer(ent->new->replacedby->profile,
|
||||
aa_get_profile(ent->new));
|
||||
__list_add_profile(&ns->base.profiles, ent->new);
|
||||
|
||||
}
|
||||
aa_load_ent_free(ent);
|
||||
}
|
||||
mutex_unlock(&ns->lock);
|
||||
|
||||
@ -37,7 +37,7 @@ int aa_getprocattr(struct aa_profile *profile, char **string)
|
||||
{
|
||||
char *str;
|
||||
int len = 0, mode_len = 0, ns_len = 0, name_len;
|
||||
const char *mode_str = profile_mode_names[profile->mode];
|
||||
const char *mode_str = aa_profile_mode_names[profile->mode];
|
||||
const char *ns_name = NULL;
|
||||
struct aa_namespace *ns = profile->ns;
|
||||
struct aa_namespace *current_ns = __aa_current_profile()->ns;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user