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Commit cdcf6723 authored by Tetsuo Handa's avatar Tetsuo Handa Committed by James Morris
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tomoyo: Coding style fix. 

Follow many of recommendations by scripts/checkpatch.pl, and follow
"lift switch variables out of switches" by Kees Cook.
This patch makes no functional change.
Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: default avatarJames Morris <james.morris@microsoft.com>
parent 8c6cb983
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Inline Side-by-side
Showing with 309 additions and 105 deletions
security/tomoyo/audit.c
View file @ cdcf6723
......@@ -32,6 +32,7 @@ static char *tomoyo_print_bprm(struct linux_binprm *bprm,
int argv_count = bprm->argc;
int envp_count = bprm->envc;
bool truncated = false;
if (!buffer)
return NULL;
len = snprintf(buffer, tomoyo_buffer_len - 1, "argv[]={ ");
......@@ -49,6 +50,7 @@ static char *tomoyo_print_bprm(struct linux_binprm *bprm,
while (offset < PAGE_SIZE) {
const char *kaddr = dump->data;
const unsigned char c = kaddr[offset++];
if (cp == last_start)
*cp++ = '"';
if (cp >= buffer + tomoyo_buffer_len - 32) {
......@@ -154,19 +156,18 @@ static char *tomoyo_print_header(struct tomoyo_request_info *r)
char *buffer = kmalloc(tomoyo_buffer_len, GFP_NOFS);
int pos;
u8 i;
if (!buffer)
return NULL;
tomoyo_convert_time(ktime_get_real_seconds(), &stamp);
pos = snprintf(buffer, tomoyo_buffer_len - 1,
"#%04u/%02u/%02u %02u:%02u:%02u# profile=%u mode=%s "
"granted=%s (global-pid=%u) task={ pid=%u ppid=%u "
"uid=%u gid=%u euid=%u egid=%u suid=%u sgid=%u "
"fsuid=%u fsgid=%u }", stamp.year, stamp.month,
stamp.day, stamp.hour, stamp.min, stamp.sec, r->profile,
tomoyo_mode[r->mode], tomoyo_yesno(r->granted), gpid,
tomoyo_sys_getpid(), tomoyo_sys_getppid(),
"#%04u/%02u/%02u %02u:%02u:%02u# profile=%u mode=%s granted=%s (global-pid=%u) task={ pid=%u ppid=%u uid=%u gid=%u euid=%u egid=%u suid=%u sgid=%u fsuid=%u fsgid=%u }",
stamp.year, stamp.month, stamp.day, stamp.hour,
stamp.min, stamp.sec, r->profile, tomoyo_mode[r->mode],
tomoyo_yesno(r->granted), gpid, tomoyo_sys_getpid(),
tomoyo_sys_getppid(),
from_kuid(&init_user_ns, current_uid()),
from_kgid(&init_user_ns, current_gid()),
from_kuid(&init_user_ns, current_euid()),
......@@ -185,6 +186,7 @@ static char *tomoyo_print_header(struct tomoyo_request_info *r)
struct tomoyo_mini_stat *stat;
unsigned int dev;
umode_t mode;
if (!obj->stat_valid[i])
continue;
stat = &obj->stat[i];
......@@ -193,8 +195,8 @@ static char *tomoyo_print_header(struct tomoyo_request_info *r)
if (i & 1) {
pos += snprintf(buffer + pos,
tomoyo_buffer_len - 1 - pos,
" path%u.parent={ uid=%u gid=%u "
"ino=%lu perm=0%o }", (i >> 1) + 1,
" path%u.parent={ uid=%u gid=%u ino=%lu perm=0%o }",
(i >> 1) + 1,
from_kuid(&init_user_ns, stat->uid),
from_kgid(&init_user_ns, stat->gid),
(unsigned long)stat->ino,
......@@ -202,8 +204,8 @@ static char *tomoyo_print_header(struct tomoyo_request_info *r)
continue;
}
pos += snprintf(buffer + pos, tomoyo_buffer_len - 1 - pos,
" path%u={ uid=%u gid=%u ino=%lu major=%u"
" minor=%u perm=0%o type=%s", (i >> 1) + 1,
" path%u={ uid=%u gid=%u ino=%lu major=%u minor=%u perm=0%o type=%s",
(i >> 1) + 1,
from_kuid(&init_user_ns, stat->uid),
from_kgid(&init_user_ns, stat->gid),
(unsigned long)stat->ino,
......@@ -249,6 +251,7 @@ char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
const char *symlink = NULL;
int pos;
const char *domainname = r->domain->domainname->name;
header = tomoyo_print_header(r);
if (!header)
return NULL;
......@@ -256,6 +259,7 @@ char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
len += strlen(domainname) + strlen(header) + 10;
if (r->ee) {
struct file *file = r->ee->bprm->file;
realpath = tomoyo_realpath_from_path(&file->f_path);
bprm_info = tomoyo_print_bprm(r->ee->bprm, &r->ee->dump);
if (!realpath || !bprm_info)
......@@ -275,6 +279,7 @@ char *tomoyo_init_log(struct tomoyo_request_info *r, int len, const char *fmt,
pos = snprintf(buf, len, "%s", header);
if (realpath) {
struct linux_binprm *bprm = r->ee->bprm;
pos += snprintf(buf + pos, len - pos,
" exec={ realpath=\"%s\" argc=%d envc=%d %s }",
realpath, bprm->argc, bprm->envc, bprm_info);
......@@ -328,6 +333,7 @@ static bool tomoyo_get_audit(const struct tomoyo_policy_namespace *ns,
const u8 category = tomoyo_index2category[index] +
TOMOYO_MAX_MAC_INDEX;
struct tomoyo_profile *p;
if (!tomoyo_policy_loaded)
return false;
p = tomoyo_profile(ns, profile);
......@@ -362,6 +368,7 @@ void tomoyo_write_log2(struct tomoyo_request_info *r, int len, const char *fmt,
char *buf;
struct tomoyo_log *entry;
bool quota_exceeded = false;
if (!tomoyo_get_audit(r->domain->ns, r->profile, r->type,
r->matched_acl, r->granted))
goto out;
......@@ -413,6 +420,7 @@ void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
{
va_list args;
int len;
va_start(args, fmt);
len = vsnprintf((char *) &len, 1, fmt, args) + 1;
va_end(args);
......@@ -431,6 +439,7 @@ void tomoyo_write_log(struct tomoyo_request_info *r, const char *fmt, ...)
void tomoyo_read_log(struct tomoyo_io_buffer *head)
{
struct tomoyo_log *ptr = NULL;
if (head->r.w_pos)
return;
kfree(head->read_buf);
......
security/tomoyo/common.c
View file @ cdcf6723
......@@ -197,6 +197,7 @@ static void tomoyo_addprintf(char *buffer, int len, const char *fmt, ...)
{
va_list args;
const int pos = strlen(buffer);
va_start(args, fmt);
vsnprintf(buffer + pos, len - pos - 1, fmt, args);
va_end(args);
......@@ -214,6 +215,7 @@ static bool tomoyo_flush(struct tomoyo_io_buffer *head)
while (head->r.w_pos) {
const char *w = head->r.w[0];
size_t len = strlen(w);
if (len) {
if (len > head->read_user_buf_avail)
len = head->read_user_buf_avail;
......@@ -279,6 +281,7 @@ static void tomoyo_io_printf(struct tomoyo_io_buffer *head, const char *fmt,
size_t len;
size_t pos = head->r.avail;
int size = head->readbuf_size - pos;
if (size <= 0)
return;
va_start(args, fmt);
......@@ -344,6 +347,7 @@ static bool tomoyo_namespace_enabled;
void tomoyo_init_policy_namespace(struct tomoyo_policy_namespace *ns)
{
unsigned int idx;
for (idx = 0; idx < TOMOYO_MAX_ACL_GROUPS; idx++)
INIT_LIST_HEAD(&ns->acl_group[idx]);
for (idx = 0; idx < TOMOYO_MAX_GROUP; idx++)
......@@ -433,6 +437,7 @@ static void tomoyo_print_number_union_nospace
u8 min_type = ptr->value_type[0];
const u8 max_type = ptr->value_type[1];
char buffer[128];
buffer[0] = '\0';
for (i = 0; i < 2; i++) {
switch (min_type) {
......@@ -487,6 +492,7 @@ static struct tomoyo_profile *tomoyo_assign_profile
{
struct tomoyo_profile *ptr;
struct tomoyo_profile *entry;
if (profile >= TOMOYO_MAX_PROFILES)
return NULL;
ptr = ns->profile_ptr[profile];
......@@ -530,6 +536,7 @@ struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
{
static struct tomoyo_profile tomoyo_null_profile;
struct tomoyo_profile *ptr = ns->profile_ptr[profile];
if (!ptr)
ptr = &tomoyo_null_profile;
return ptr;
......@@ -546,6 +553,7 @@ struct tomoyo_profile *tomoyo_profile(const struct tomoyo_policy_namespace *ns,
static s8 tomoyo_find_yesno(const char *string, const char *find)
{
const char *cp = strstr(string, find);
if (cp) {
cp += strlen(find);
if (!strncmp(cp, "=yes", 4))
......@@ -569,6 +577,7 @@ static void tomoyo_set_uint(unsigned int *i, const char *string,
const char *find)
{
const char *cp = strstr(string, find);
if (cp)
sscanf(cp + strlen(find), "=%u", i);
}
......@@ -587,6 +596,7 @@ static int tomoyo_set_mode(char *name, const char *value,
{
u8 i;
u8 config;
if (!strcmp(name, "CONFIG")) {
i = TOMOYO_MAX_MAC_INDEX + TOMOYO_MAX_MAC_CATEGORY_INDEX;
config = profile->default_config;
......@@ -595,10 +605,12 @@ static int tomoyo_set_mode(char *name, const char *value,
for (i = 0; i < TOMOYO_MAX_MAC_INDEX
+ TOMOYO_MAX_MAC_CATEGORY_INDEX; i++) {
int len = 0;
if (i < TOMOYO_MAX_MAC_INDEX) {
const u8 c = tomoyo_index2category[i];
const char *category =
tomoyo_category_keywords[c];
len = strlen(category);
if (strncmp(name, category, len) ||
name[len++] != ':' || name[len++] != ':')
......@@ -618,6 +630,7 @@ static int tomoyo_set_mode(char *name, const char *value,
config = TOMOYO_CONFIG_USE_DEFAULT;
} else {
u8 mode;
for (mode = 0; mode < 4; mode++)
if (strstr(value, tomoyo_mode[mode]))
/*
......@@ -664,6 +677,7 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
unsigned int i;
char *cp;
struct tomoyo_profile *profile;
if (sscanf(data, "PROFILE_VERSION=%u", &head->w.ns->profile_version)
== 1)
return 0;
......@@ -683,6 +697,7 @@ static int tomoyo_write_profile(struct tomoyo_io_buffer *head)
const struct tomoyo_path_info *new_comment
= tomoyo_get_name(cp);
const struct tomoyo_path_info *old_comment;
if (!new_comment)
return -ENOMEM;
spin_lock(&lock);
......@@ -732,6 +747,7 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
struct tomoyo_policy_namespace *ns =
container_of(head->r.ns, typeof(*ns), namespace_list);
const struct tomoyo_profile *profile;
if (head->r.eof)
return;
next:
......@@ -760,6 +776,7 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
u8 i;
const struct tomoyo_path_info *comment =
profile->comment;
tomoyo_print_namespace(head);
tomoyo_io_printf(head, "%u-COMMENT=", index);
tomoyo_set_string(head, comment ? comment->name : "");
......@@ -788,6 +805,7 @@ static void tomoyo_read_profile(struct tomoyo_io_buffer *head)
+ TOMOYO_MAX_MAC_CATEGORY_INDEX; head->r.bit++) {
const u8 i = head->r.bit;
const u8 config = profile->config[i];
if (config == TOMOYO_CONFIG_USE_DEFAULT)
continue;
tomoyo_print_namespace(head);
......@@ -847,10 +865,10 @@ static int tomoyo_update_manager_entry(const char *manager,
struct tomoyo_acl_param param = {
/* .ns = &tomoyo_kernel_namespace, */
.is_delete = is_delete,
.list = &tomoyo_kernel_namespace.
policy_list[TOMOYO_ID_MANAGER],
.list = &tomoyo_kernel_namespace.policy_list[TOMOYO_ID_MANAGER],
};
int error = is_delete ? -ENOENT : -ENOMEM;
if (!tomoyo_correct_domain(manager) &&
!tomoyo_correct_word(manager))
return -EINVAL;
......@@ -894,10 +912,10 @@ static void tomoyo_read_manager(struct tomoyo_io_buffer *head)
{
if (head->r.eof)
return;
list_for_each_cookie(head->r.acl, &tomoyo_kernel_namespace.
policy_list[TOMOYO_ID_MANAGER]) {
list_for_each_cookie(head->r.acl, &tomoyo_kernel_namespace.policy_list[TOMOYO_ID_MANAGER]) {
struct tomoyo_manager *ptr =
list_entry(head->r.acl, typeof(*ptr), head.list);
if (ptr->head.is_deleted)
continue;
if (!tomoyo_flush(head))
......@@ -933,8 +951,7 @@ static bool tomoyo_manager(void)
exe = tomoyo_get_exe();
if (!exe)
return false;
list_for_each_entry_rcu(ptr, &tomoyo_kernel_namespace.
policy_list[TOMOYO_ID_MANAGER], head.list) {
list_for_each_entry_rcu(ptr, &tomoyo_kernel_namespace.policy_list[TOMOYO_ID_MANAGER], head.list) {
if (!ptr->head.is_deleted &&
(!tomoyo_pathcmp(domainname, ptr->manager) ||
!strcmp(exe, ptr->manager->name))) {
......@@ -945,9 +962,10 @@ static bool tomoyo_manager(void)
if (!found) { /* Reduce error messages. */
static pid_t last_pid;
const pid_t pid = current->pid;
if (last_pid != pid) {
printk(KERN_WARNING "%s ( %s ) is not permitted to "
"update policies.\n", domainname->name, exe);
pr_warn("%s ( %s ) is not permitted to update policies.\n",
domainname->name, exe);
last_pid = pid;
}
}
......@@ -974,12 +992,14 @@ static bool tomoyo_select_domain(struct tomoyo_io_buffer *head,
unsigned int pid;
struct tomoyo_domain_info *domain = NULL;
bool global_pid = false;
if (strncmp(data, "select ", 7))
return false;
data += 7;
if (sscanf(data, "pid=%u", &pid) == 1 ||
(global_pid = true, sscanf(data, "global-pid=%u", &pid) == 1)) {
struct task_struct *p;
rcu_read_lock();
if (global_pid)
p = find_task_by_pid_ns(pid, &init_pid_ns);
......@@ -1024,6 +1044,7 @@ static bool tomoyo_same_task_acl(const struct tomoyo_acl_info *a,
{
const struct tomoyo_task_acl *p1 = container_of(a, typeof(*p1), head);
const struct tomoyo_task_acl *p2 = container_of(b, typeof(*p2), head);
return p1->domainname == p2->domainname;
}
......@@ -1039,11 +1060,13 @@ static bool tomoyo_same_task_acl(const struct tomoyo_acl_info *a,
static int tomoyo_write_task(struct tomoyo_acl_param *param)
{
int error = -EINVAL;
if (tomoyo_str_starts(&param->data, "manual_domain_transition ")) {
struct tomoyo_task_acl e = {
.head.type = TOMOYO_TYPE_MANUAL_TASK_ACL,
.domainname = tomoyo_get_domainname(param),
};
if (e.domainname)
error = tomoyo_update_domain(&e.head, sizeof(e), param,
tomoyo_same_task_acl,
......@@ -1110,7 +1133,7 @@ static int tomoyo_write_domain2(struct tomoyo_policy_namespace *ns,
};
static const struct {
const char *keyword;
int (*write) (struct tomoyo_acl_param *);
int (*write)(struct tomoyo_acl_param *param);
} tomoyo_callback[5] = {
{ "file ", tomoyo_write_file },
{ "network inet ", tomoyo_write_inet_network },
......@@ -1152,8 +1175,10 @@ static int tomoyo_write_domain(struct tomoyo_io_buffer *head)
const bool is_delete = head->w.is_delete;
bool is_select = !is_delete && tomoyo_str_starts(&data, "select ");
unsigned int profile;
if (*data == '<') {
int ret = 0;
domain = NULL;
if (is_delete)
ret = tomoyo_delete_domain(data);
......@@ -1181,6 +1206,7 @@ static int tomoyo_write_domain(struct tomoyo_io_buffer *head)
}
for (profile = 0; profile < TOMOYO_MAX_DOMAIN_INFO_FLAGS; profile++) {
const char *cp = tomoyo_dif[profile];
if (strncmp(data, cp, strlen(cp) - 1))
continue;
domain->flags[profile] = !is_delete;
......@@ -1225,9 +1251,11 @@ static bool tomoyo_print_condition(struct tomoyo_io_buffer *head,
const struct tomoyo_envp *envp =
(typeof(envp)) (argv + cond->argc);
u16 skip;
for (skip = 0; skip < head->r.cond_index; skip++) {
const u8 left = condp->left;
const u8 right = condp->right;
condp++;
switch (left) {
case TOMOYO_ARGV_ENTRY:
......@@ -1253,6 +1281,7 @@ static bool tomoyo_print_condition(struct tomoyo_io_buffer *head,
const u8 match = condp->equals;
const u8 left = condp->left;
const u8 right = condp->right;
if (!tomoyo_flush(head))
return false;
condp++;
......@@ -1262,8 +1291,7 @@ static bool tomoyo_print_condition(struct tomoyo_io_buffer *head,
case TOMOYO_ARGV_ENTRY:
tomoyo_io_printf(head,
"exec.argv[%lu]%s=\"",
argv->index, argv->
is_not ? "!" : "");
argv->index, argv->is_not ? "!" : "");
tomoyo_set_string(head,
argv->value->name);
tomoyo_set_string(head, "\"");
......@@ -1274,12 +1302,10 @@ static bool tomoyo_print_condition(struct tomoyo_io_buffer *head,
"exec.envp[\"");
tomoyo_set_string(head,
envp->name->name);
tomoyo_io_printf(head, "\"]%s=", envp->
is_not ? "!" : "");
tomoyo_io_printf(head, "\"]%s=", envp->is_not ? "!" : "");
if (envp->value) {
tomoyo_set_string(head, "\"");
tomoyo_set_string(head, envp->
value->name);
tomoyo_set_string(head, envp->value->name);
tomoyo_set_string(head, "\"");
} else {
tomoyo_set_string(head,
......@@ -1375,6 +1401,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
struct tomoyo_path_acl *ptr =
container_of(acl, typeof(*ptr), head);
const u16 perm = ptr->perm;
for (bit = 0; bit < TOMOYO_MAX_PATH_OPERATION; bit++) {
if (!(perm & (1 << bit)))
continue;
......@@ -1395,6 +1422,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
} else if (acl_type == TOMOYO_TYPE_MANUAL_TASK_ACL) {
struct tomoyo_task_acl *ptr =
container_of(acl, typeof(*ptr), head);
tomoyo_set_group(head, "task ");
tomoyo_set_string(head, "manual_domain_transition ");
tomoyo_set_string(head, ptr->domainname->name);
......@@ -1404,6 +1432,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
struct tomoyo_path2_acl *ptr =
container_of(acl, typeof(*ptr), head);
const u8 perm = ptr->perm;
for (bit = 0; bit < TOMOYO_MAX_PATH2_OPERATION; bit++) {
if (!(perm & (1 << bit)))
continue;
......@@ -1424,6 +1453,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
struct tomoyo_path_number_acl *ptr =
container_of(acl, typeof(*ptr), head);
const u8 perm = ptr->perm;
for (bit = 0; bit < TOMOYO_MAX_PATH_NUMBER_OPERATION; bit++) {
if (!(perm & (1 << bit)))
continue;
......@@ -1444,6 +1474,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
struct tomoyo_mkdev_acl *ptr =
container_of(acl, typeof(*ptr), head);
const u8 perm = ptr->perm;
for (bit = 0; bit < TOMOYO_MAX_MKDEV_OPERATION; bit++) {
if (!(perm & (1 << bit)))
continue;
......@@ -1490,6 +1521,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
->name);
} else {
char buf[128];
tomoyo_print_ip(buf, sizeof(buf), &ptr->address);
tomoyo_io_printf(head, "%s", buf);
}
......@@ -1519,6 +1551,7 @@ static bool tomoyo_print_entry(struct tomoyo_io_buffer *head,
} else if (acl_type == TOMOYO_TYPE_MOUNT_ACL) {
struct tomoyo_mount_acl *ptr =
container_of(acl, typeof(*ptr), head);
tomoyo_set_group(head, "file mount");
tomoyo_print_name_union(head, &ptr->dev_name);
tomoyo_print_name_union(head, &ptr->dir_name);
......@@ -1562,6 +1595,7 @@ static bool tomoyo_read_domain2(struct tomoyo_io_buffer *head,
list_for_each_cookie(head->r.acl, list) {
struct tomoyo_acl_info *ptr =
list_entry(head->r.acl, typeof(*ptr), list);
if (!tomoyo_print_entry(head, ptr))
return false;
}
......@@ -1583,8 +1617,9 @@ static void tomoyo_read_domain(struct tomoyo_io_buffer *head)
list_for_each_cookie(head->r.domain, &tomoyo_domain_list) {
struct tomoyo_domain_info *domain =
list_entry(head->r.domain, typeof(*domain), list);
switch (head->r.step) {
u8 i;
switch (head->r.step) {
case 0:
if (domain->is_deleted &&
!head->r.print_this_domain_only)
......@@ -1711,6 +1746,7 @@ static int tomoyo_write_exception(struct tomoyo_io_buffer *head)
.data = head->write_buf,
};
u8 i;
if (tomoyo_str_starts(&param.data, "aggregator "))
return tomoyo_write_aggregator(&param);
for (i = 0; i < TOMOYO_MAX_TRANSITION_TYPE; i++)
......@@ -1722,6 +1758,7 @@ static int tomoyo_write_exception(struct tomoyo_io_buffer *head)
if (tomoyo_str_starts(&param.data, "acl_group ")) {
unsigned int group;
char *data;
group = simple_strtoul(param.data, &data, 10);
if (group < TOMOYO_MAX_ACL_GROUPS && *data++ == ' ')
return tomoyo_write_domain2
......@@ -1746,12 +1783,15 @@ static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx)
struct tomoyo_policy_namespace *ns =
container_of(head->r.ns, typeof(*ns), namespace_list);
struct list_head *list = &ns->group_list[idx];
list_for_each_cookie(head->r.group, list) {
struct tomoyo_group *group =
list_entry(head->r.group, typeof(*group), head.list);
list_for_each_cookie(head->r.acl, &group->member_list) {
struct tomoyo_acl_head *ptr =
list_entry(head->r.acl, typeof(*ptr), list);
if (ptr->is_deleted)
continue;
if (!tomoyo_flush(head))
......@@ -1771,10 +1811,10 @@ static bool tomoyo_read_group(struct tomoyo_io_buffer *head, const int idx)
head)->number);
} else if (idx == TOMOYO_ADDRESS_GROUP) {
char buffer[128];
struct tomoyo_address_group *member =
container_of(ptr, typeof(*member),
head);
tomoyo_print_ip(buffer, sizeof(buffer),
&member->address);
tomoyo_io_printf(head, " %s", buffer);
......@@ -1802,6 +1842,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
struct tomoyo_policy_namespace *ns =
container_of(head->r.ns, typeof(*ns), namespace_list);
struct list_head *list = &ns->policy_list[idx];
list_for_each_cookie(head->r.acl, list) {
struct tomoyo_acl_head *acl =
container_of(head->r.acl, typeof(*acl), list);
......@@ -1814,6 +1855,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
{
struct tomoyo_transition_control *ptr =
container_of(acl, typeof(*ptr), head);
tomoyo_print_namespace(head);
tomoyo_set_string(head, tomoyo_transition_type
[ptr->type]);
......@@ -1829,6 +1871,7 @@ static bool tomoyo_read_policy(struct tomoyo_io_buffer *head, const int idx)
{
struct tomoyo_aggregator *ptr =
container_of(acl, typeof(*ptr), head);
tomoyo_print_namespace(head);
tomoyo_set_string(head, "aggregator ");
tomoyo_set_string(head,
......@@ -1858,6 +1901,7 @@ static void tomoyo_read_exception(struct tomoyo_io_buffer *head)
{
struct tomoyo_policy_namespace *ns =
container_of(head->r.ns, typeof(*ns), namespace_list);
if (head->r.eof)
return;
while (head->r.step < TOMOYO_MAX_POLICY &&
......@@ -1921,6 +1965,7 @@ static atomic_t tomoyo_query_observers = ATOMIC_INIT(0);
static int tomoyo_truncate(char *str)
{
char *start = str;
while (*(unsigned char *) str > (unsigned char) ' ')
str++;
*str = '\0';
......@@ -1943,6 +1988,7 @@ static void tomoyo_add_entry(struct tomoyo_domain_info *domain, char *header)
char *symlink = NULL;
char *cp = strchr(header, '\n');
int len;
if (!cp)
return;
cp = strchr(cp + 1, '\n');
......@@ -2002,6 +2048,7 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
static unsigned int tomoyo_serial;
struct tomoyo_query entry = { };
bool quota_exceeded = false;
va_start(args, fmt);
len = vsnprintf((char *) &len, 1, fmt, args) + 1;
va_end(args);
......@@ -2063,7 +2110,6 @@ int tomoyo_supervisor(struct tomoyo_request_info *r, const char *fmt, ...)
(tomoyo_answer_wait, entry.answer ||
!atomic_read(&tomoyo_query_observers), HZ))
break;
else
entry.timer++;
}
spin_lock(&tomoyo_query_list_lock);
......@@ -2100,6 +2146,7 @@ static struct tomoyo_domain_info *tomoyo_find_domain_by_qid
{
struct tomoyo_query *ptr;
struct tomoyo_domain_info *domain = NULL;
spin_lock(&tomoyo_query_list_lock);
list_for_each_entry(ptr, &tomoyo_query_list, list) {
if (ptr->serial != serial)
......@@ -2142,15 +2189,15 @@ static void tomoyo_read_query(struct tomoyo_io_buffer *head)
unsigned int pos = 0;
size_t len = 0;
char *buf;
if (head->r.w_pos)
return;
if (head->read_buf) {
kfree(head->read_buf);
head->read_buf = NULL;
}
spin_lock(&tomoyo_query_list_lock);
list_for_each(tmp, &tomoyo_query_list) {
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list);
if (pos++ != head->r.query_index)
continue;
len = ptr->query_len;
......@@ -2168,6 +2215,7 @@ static void tomoyo_read_query(struct tomoyo_io_buffer *head)
spin_lock(&tomoyo_query_list_lock);
list_for_each(tmp, &tomoyo_query_list) {
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list);
if (pos++ != head->r.query_index)
continue;
/*
......@@ -2202,9 +2250,11 @@ static int tomoyo_write_answer(struct tomoyo_io_buffer *head)
struct list_head *tmp;
unsigned int serial;
unsigned int answer;
spin_lock(&tomoyo_query_list_lock);
list_for_each(tmp, &tomoyo_query_list) {
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list);
ptr->timer = 0;
}
spin_unlock(&tomoyo_query_list_lock);
......@@ -2213,6 +2263,7 @@ static int tomoyo_write_answer(struct tomoyo_io_buffer *head)
spin_lock(&tomoyo_query_list_lock);
list_for_each(tmp, &tomoyo_query_list) {
struct tomoyo_query *ptr = list_entry(tmp, typeof(*ptr), list);
if (ptr->serial != serial)
continue;
ptr->answer = answer;
......@@ -2287,6 +2338,7 @@ static void tomoyo_read_stat(struct tomoyo_io_buffer *head)
{
u8 i;
unsigned int total = 0;
if (head->r.eof)
return;
for (i = 0; i < TOMOYO_MAX_POLICY_STAT; i++) {
......@@ -2295,9 +2347,9 @@ static void tomoyo_read_stat(struct tomoyo_io_buffer *head)
tomoyo_stat_updated[i]);
if (tomoyo_stat_modified[i]) {
struct tomoyo_time stamp;
tomoyo_convert_time(tomoyo_stat_modified[i], &stamp);
tomoyo_io_printf(head, " (Last: %04u/%02u/%02u "
"%02u:%02u:%02u)",
tomoyo_io_printf(head, " (Last: %04u/%02u/%02u %02u:%02u:%02u)",
stamp.year, stamp.month, stamp.day,
stamp.hour, stamp.min, stamp.sec);
}
......@@ -2305,6 +2357,7 @@ static void tomoyo_read_stat(struct tomoyo_io_buffer *head)
}
for (i = 0; i < TOMOYO_MAX_MEMORY_STAT; i++) {
unsigned int used = tomoyo_memory_used[i];
total += used;
tomoyo_io_printf(head, "Memory used by %-22s %10u",
tomoyo_memory_headers[i], used);
......@@ -2329,6 +2382,7 @@ static int tomoyo_write_stat(struct tomoyo_io_buffer *head)
{
char *data = head->write_buf;
u8 i;
if (tomoyo_str_starts(&data, "Memory used by "))
for (i = 0; i < TOMOYO_MAX_MEMORY_STAT; i++)
if (tomoyo_str_starts(&data, tomoyo_memory_headers[i]))
......@@ -2457,6 +2511,7 @@ int tomoyo_open_control(const u8 type, struct file *file)
__poll_t tomoyo_poll_control(struct file *file, poll_table *wait)
{
struct tomoyo_io_buffer *head = file->private_data;
if (head->poll)
return head->poll(file, wait) | EPOLLOUT | EPOLLWRNORM;
return EPOLLIN | EPOLLRDNORM | EPOLLOUT | EPOLLWRNORM;
......@@ -2472,6 +2527,7 @@ __poll_t tomoyo_poll_control(struct file *file, poll_table *wait)
static inline void tomoyo_set_namespace_cursor(struct tomoyo_io_buffer *head)
{
struct list_head *ns;
if (head->type != TOMOYO_EXCEPTIONPOLICY &&
head->type != TOMOYO_PROFILE)
return;
......@@ -2517,7 +2573,7 @@ ssize_t tomoyo_read_control(struct tomoyo_io_buffer *head, char __user *buffer,
int idx;
if (!head->read)
return -ENOSYS;
return -EINVAL;
if (mutex_lock_interruptible(&head->io_sem))
return -EINTR;
head->read_user_buf = buffer;
......@@ -2557,6 +2613,7 @@ static int tomoyo_parse_policy(struct tomoyo_io_buffer *head, char *line)
head->type == TOMOYO_PROFILE) {
if (*line == '<') {
char *cp = strchr(line, ' ');
if (cp) {
*cp++ = '\0';
head->w.ns = tomoyo_assign_namespace(line);
......@@ -2589,8 +2646,9 @@ ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
size_t avail_len = buffer_len;
char *cp0 = head->write_buf;
int idx;
if (!head->write)
return -ENOSYS;
return -EINVAL;
if (!access_ok(buffer, buffer_len))
return -EFAULT;
if (mutex_lock_interruptible(&head->io_sem))
......@@ -2600,9 +2658,11 @@ ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
/* Read a line and dispatch it to the policy handler. */
while (avail_len > 0) {
char c;
if (head->w.avail >= head->writebuf_size - 1) {
const int len = head->writebuf_size * 2;
char *cp = kzalloc(len, GFP_NOFS);
if (!cp) {
error = -ENOMEM;
break;
......@@ -2701,30 +2761,27 @@ void tomoyo_check_profile(void)
{
struct tomoyo_domain_info *domain;
const int idx = tomoyo_read_lock();
tomoyo_policy_loaded = true;
printk(KERN_INFO "TOMOYO: 2.5.0\n");
pr_info("TOMOYO: 2.5.0\n");
list_for_each_entry_rcu(domain, &tomoyo_domain_list, list) {
const u8 profile = domain->profile;
const struct tomoyo_policy_namespace *ns = domain->ns;
if (ns->profile_version != 20110903)
printk(KERN_ERR
"Profile version %u is not supported.\n",
pr_err("Profile version %u is not supported.\n",
ns->profile_version);
else if (!ns->profile_ptr[profile])
printk(KERN_ERR
"Profile %u (used by '%s') is not defined.\n",
pr_err("Profile %u (used by '%s') is not defined.\n",
profile, domain->domainname->name);
else
continue;
printk(KERN_ERR
"Userland tools for TOMOYO 2.5 must be installed and "
"policy must be initialized.\n");
printk(KERN_ERR "Please see http://tomoyo.sourceforge.jp/2.5/ "
"for more information.\n");
pr_err("Userland tools for TOMOYO 2.5 must be installed and policy must be initialized.\n");
pr_err("Please see http://tomoyo.sourceforge.jp/2.5/ for more information.\n");
panic("STOP!");
}
tomoyo_read_unlock(idx);
printk(KERN_INFO "Mandatory Access Control activated.\n");
pr_info("Mandatory Access Control activated.\n");
}
/**
......@@ -2743,9 +2800,11 @@ void __init tomoyo_load_builtin_policy(void)
#include "builtin-policy.h"
u8 i;
const int idx = tomoyo_read_lock();
for (i = 0; i < 5; i++) {
struct tomoyo_io_buffer head = { };
char *start = "";
switch (i) {
case 0:
start = tomoyo_builtin_profile;
......@@ -2775,6 +2834,7 @@ void __init tomoyo_load_builtin_policy(void)
}
while (1) {
char *end = strchr(start, '\n');
if (!end)
break;
*end = '\0';
......
security/tomoyo/common.h
View file @ cdcf6723
......@@ -10,6 +10,8 @@
#ifndef _SECURITY_TOMOYO_COMMON_H
#define _SECURITY_TOMOYO_COMMON_H
#define pr_fmt(fmt) fmt
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/mm.h>
......@@ -788,9 +790,9 @@ struct tomoyo_acl_param {
* interfaces.
*/
struct tomoyo_io_buffer {
void (*read) (struct tomoyo_io_buffer *);
int (*write) (struct tomoyo_io_buffer *);
__poll_t (*poll) (struct file *file, poll_table *wait);
void (*read)(struct tomoyo_io_buffer *head);
int (*write)(struct tomoyo_io_buffer *head);
__poll_t (*poll)(struct file *file, poll_table *wait);
/* Exclusive lock for this structure. */
struct mutex io_sem;
char __user *read_user_buf;
......@@ -1042,7 +1044,7 @@ void *tomoyo_commit_ok(void *data, const unsigned int size);
void __init tomoyo_load_builtin_policy(void);
void __init tomoyo_mm_init(void);
void tomoyo_check_acl(struct tomoyo_request_info *r,
bool (*check_entry) (struct tomoyo_request_info *,
bool (*check_entry)(struct tomoyo_request_info *,
const struct tomoyo_acl_info *));
void tomoyo_check_profile(void);
void tomoyo_convert_time(time64_t time, struct tomoyo_time *stamp);
......@@ -1131,6 +1133,7 @@ static inline void tomoyo_read_unlock(int idx)
static inline pid_t tomoyo_sys_getppid(void)
{
pid_t pid;
rcu_read_lock();
pid = task_tgid_vnr(rcu_dereference(current->real_parent));
rcu_read_unlock();
......
security/tomoyo/condition.c
View file @ cdcf6723
......@@ -28,9 +28,11 @@ static bool tomoyo_argv(const unsigned int index, const char *arg_ptr,
{
int i;
struct tomoyo_path_info arg;
arg.name = arg_ptr;
for (i = 0; i < argc; argv++, checked++, i++) {
bool result;
if (index != argv->index)
continue;
*checked = 1;
......@@ -62,12 +64,14 @@ static bool tomoyo_envp(const char *env_name, const char *env_value,
int i;
struct tomoyo_path_info name;
struct tomoyo_path_info value;
name.name = env_name;
tomoyo_fill_path_info(&name);
value.name = env_value;
tomoyo_fill_path_info(&value);
for (i = 0; i < envc; envp++, checked++, i++) {
bool result;
if (!tomoyo_path_matches_pattern(&name, envp->name))
continue;
*checked = 1;
......@@ -113,6 +117,7 @@ static bool tomoyo_scan_bprm(struct tomoyo_execve *ee,
bool result = true;
u8 local_checked[32];
u8 *checked;
if (argc + envc <= sizeof(local_checked)) {
checked = local_checked;
memset(local_checked, 0, sizeof(local_checked));
......@@ -131,6 +136,7 @@ static bool tomoyo_scan_bprm(struct tomoyo_execve *ee,
/* Read. */
const char *kaddr = dump->data;
const unsigned char c = kaddr[offset++];
if (c && arg_len < TOMOYO_EXEC_TMPSIZE - 10) {
if (c == '\\') {
arg_ptr[arg_len++] = '\\';
......@@ -160,6 +166,7 @@ static bool tomoyo_scan_bprm(struct tomoyo_execve *ee,
argv_count--;
} else if (envp_count) {
char *cp = strchr(arg_ptr, '=');
if (cp) {
*cp = '\0';
if (!tomoyo_envp(arg_ptr, cp + 1,
......@@ -182,6 +189,7 @@ static bool tomoyo_scan_bprm(struct tomoyo_execve *ee,
out:
if (result) {
int i;
/* Check not-yet-checked entries. */
for (i = 0; i < argc; i++) {
if (checked[i])
......@@ -229,6 +237,7 @@ static bool tomoyo_scan_exec_realpath(struct file *file,
{
bool result;
struct tomoyo_path_info exe;
if (!file)
return false;
exe.name = tomoyo_realpath_from_path(&file->f_path);
......@@ -250,6 +259,7 @@ static bool tomoyo_scan_exec_realpath(struct file *file,
static const struct tomoyo_path_info *tomoyo_get_dqword(char *start)
{
char *cp = start + strlen(start) - 1;
if (cp == start || *start++ != '"' || *cp != '"')
return NULL;
*cp = '\0';
......@@ -270,6 +280,7 @@ static bool tomoyo_parse_name_union_quoted(struct tomoyo_acl_param *param,
struct tomoyo_name_union *ptr)
{
char *filename = param->data;
if (*filename == '@')
return tomoyo_parse_name_union(param, ptr);
ptr->filename = tomoyo_get_dqword(filename);
......@@ -310,6 +321,7 @@ static bool tomoyo_parse_envp(char *left, char *right,
const struct tomoyo_path_info *name;
const struct tomoyo_path_info *value;
char *cp = left + strlen(left) - 1;
if (*cp-- != ']' || *cp != '"')
goto out;
*cp = '\0';
......@@ -364,6 +376,7 @@ static inline bool tomoyo_same_condition(const struct tomoyo_condition *a,
static u8 tomoyo_condition_type(const char *word)
{
u8 i;
for (i = 0; i < TOMOYO_MAX_CONDITION_KEYWORD; i++) {
if (!strcmp(word, tomoyo_condition_keyword[i]))
break;
......@@ -395,6 +408,7 @@ static struct tomoyo_condition *tomoyo_commit_condition
{
struct tomoyo_condition *ptr;
bool found = false;
if (mutex_lock_interruptible(&tomoyo_policy_lock)) {
dprintk(KERN_WARNING "%u: %s failed\n", __LINE__, __func__);
ptr = NULL;
......@@ -442,12 +456,14 @@ static char *tomoyo_get_transit_preference(struct tomoyo_acl_param *param,
{
char * const pos = param->data;
bool flag;
if (*pos == '<') {
e->transit = tomoyo_get_domainname(param);
goto done;
}
{
char *cp = strchr(pos, ' ');
if (cp)
*cp = '\0';
flag = tomoyo_correct_path(pos) || !strcmp(pos, "keep") ||
......@@ -489,6 +505,7 @@ struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param)
tomoyo_get_transit_preference(param, &e);
char * const end_of_string = start_of_string + strlen(start_of_string);
char *pos;
rerun:
pos = start_of_string;
while (1) {
......@@ -498,6 +515,7 @@ struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param)
char *cp;
char *right_word;
bool is_not;
if (!*left_word)
break;
/*
......@@ -622,8 +640,8 @@ struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param)
}
store_value:
if (!condp) {
dprintk(KERN_WARNING "%u: dry_run left=%u right=%u "
"match=%u\n", __LINE__, left, right, !is_not);
dprintk(KERN_WARNING "%u: dry_run left=%u right=%u match=%u\n",
__LINE__, left, right, !is_not);
continue;
}
condp->left = left;
......@@ -660,6 +678,7 @@ struct tomoyo_condition *tomoyo_get_condition(struct tomoyo_acl_param *param)
envp = (struct tomoyo_envp *) (argv + e.argc);
{
bool flag = false;
for (pos = start_of_string; pos < end_of_string; pos++) {
if (*pos)
continue;
......@@ -698,6 +717,7 @@ void tomoyo_get_attributes(struct tomoyo_obj_info *obj)
for (i = 0; i < TOMOYO_MAX_PATH_STAT; i++) {
struct inode *inode;
switch (i) {
case TOMOYO_PATH1:
dentry = obj->path1.dentry;
......@@ -718,6 +738,7 @@ void tomoyo_get_attributes(struct tomoyo_obj_info *obj)
inode = d_backing_inode(dentry);
if (inode) {
struct tomoyo_mini_stat *stat = &obj->stat[i];
stat->uid = inode->i_uid;
stat->gid = inode->i_gid;
stat->ino = inode->i_ino;
......@@ -726,8 +747,7 @@ void tomoyo_get_attributes(struct tomoyo_obj_info *obj)
stat->rdev = inode->i_rdev;
obj->stat_valid[i] = true;
}
if (i & 1) /* i == TOMOYO_PATH1_PARENT ||
i == TOMOYO_PATH2_PARENT */
if (i & 1) /* TOMOYO_PATH1_PARENT or TOMOYO_PATH2_PARENT */
dput(dentry);
}
}
......@@ -758,6 +778,7 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
u16 argc;
u16 envc;
struct linux_binprm *bprm = NULL;
if (!cond)
return true;
condc = cond->condc;
......@@ -780,6 +801,7 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
const u8 right = condp->right;
bool is_bitop[2] = { false, false };
u8 j;
condp++;
/* Check argv[] and envp[] later. */
if (left == TOMOYO_ARGV_ENTRY || left == TOMOYO_ENVP_ENTRY)
......@@ -787,10 +809,11 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
/* Check string expressions. */
if (right == TOMOYO_NAME_UNION) {
const struct tomoyo_name_union *ptr = names_p++;
switch (left) {
struct tomoyo_path_info *symlink;
struct tomoyo_execve *ee;
struct file *file;
switch (left) {
case TOMOYO_SYMLINK_TARGET:
symlink = obj ? obj->symlink_target : NULL;
if (!symlink ||
......@@ -812,6 +835,7 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
for (j = 0; j < 2; j++) {
const u8 index = j ? right : left;
unsigned long value = 0;
switch (index) {
case TOMOYO_TASK_UID:
value = from_kuid(&init_user_ns, current_uid());
......@@ -874,31 +898,31 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
value = S_ISVTX;
break;
case TOMOYO_MODE_OWNER_READ:
value = S_IRUSR;
value = 0400;
break;
case TOMOYO_MODE_OWNER_WRITE:
value = S_IWUSR;
value = 0200;
break;
case TOMOYO_MODE_OWNER_EXECUTE:
value = S_IXUSR;
value = 0100;
break;
case TOMOYO_MODE_GROUP_READ:
value = S_IRGRP;
value = 0040;
break;
case TOMOYO_MODE_GROUP_WRITE:
value = S_IWGRP;
value = 0020;
break;
case TOMOYO_MODE_GROUP_EXECUTE:
value = S_IXGRP;
value = 0010;
break;
case TOMOYO_MODE_OTHERS_READ:
value = S_IROTH;
value = 0004;
break;
case TOMOYO_MODE_OTHERS_WRITE:
value = S_IWOTH;
value = 0002;
break;
case TOMOYO_MODE_OTHERS_EXECUTE:
value = S_IXOTH;
value = 0001;
break;
case TOMOYO_EXEC_ARGC:
if (!bprm)
......@@ -923,6 +947,7 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
{
u8 stat_index;
struct tomoyo_mini_stat *stat;
switch (index) {
case TOMOYO_PATH1_UID:
case TOMOYO_PATH1_GID:
......@@ -1036,12 +1061,14 @@ bool tomoyo_condition(struct tomoyo_request_info *r,
if (left == TOMOYO_NUMBER_UNION) {
/* Fetch values now. */
const struct tomoyo_number_union *ptr = numbers_p++;
min_v[0] = ptr->values[0];
max_v[0] = ptr->values[1];
}
if (right == TOMOYO_NUMBER_UNION) {
/* Fetch values now. */
const struct tomoyo_number_union *ptr = numbers_p++;
if (ptr->group) {
if (tomoyo_number_matches_group(min_v[0],
max_v[0],
......
security/tomoyo/domain.c
View file @ cdcf6723
......@@ -30,7 +30,7 @@ struct tomoyo_domain_info tomoyo_kernel_domain;
*/
int tomoyo_update_policy(struct tomoyo_acl_head *new_entry, const int size,
struct tomoyo_acl_param *param,
bool (*check_duplicate) (const struct tomoyo_acl_head
bool (*check_duplicate)(const struct tomoyo_acl_head
*,
const struct tomoyo_acl_head
*))
......@@ -90,11 +90,11 @@ static inline bool tomoyo_same_acl_head(const struct tomoyo_acl_info *a,
*/
int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
struct tomoyo_acl_param *param,
bool (*check_duplicate) (const struct tomoyo_acl_info
bool (*check_duplicate)(const struct tomoyo_acl_info
*,
const struct tomoyo_acl_info
*),
bool (*merge_duplicate) (struct tomoyo_acl_info *,
bool (*merge_duplicate)(struct tomoyo_acl_info *,
struct tomoyo_acl_info *,
const bool))
{
......@@ -157,7 +157,7 @@ int tomoyo_update_domain(struct tomoyo_acl_info *new_entry, const int size,
* Caller holds tomoyo_read_lock().
*/
void tomoyo_check_acl(struct tomoyo_request_info *r,
bool (*check_entry) (struct tomoyo_request_info *,
bool (*check_entry)(struct tomoyo_request_info *,
const struct tomoyo_acl_info *))
{
const struct tomoyo_domain_info *domain = r->domain;
......@@ -198,6 +198,7 @@ LIST_HEAD(tomoyo_domain_list);
static const char *tomoyo_last_word(const char *name)
{
const char *cp = strrchr(name, ' ');
if (cp)
return cp + 1;
return name;
......@@ -220,6 +221,7 @@ static bool tomoyo_same_transition_control(const struct tomoyo_acl_head *a,
const struct tomoyo_transition_control *p2 = container_of(b,
typeof(*p2),
head);
return p1->type == p2->type && p1->is_last_name == p2->is_last_name
&& p1->domainname == p2->domainname
&& p1->program == p2->program;
......@@ -240,6 +242,7 @@ int tomoyo_write_transition_control(struct tomoyo_acl_param *param,
int error = param->is_delete ? -ENOENT : -ENOMEM;
char *program = param->data;
char *domainname = strstr(program, " from ");
if (domainname) {
*domainname = '\0';
domainname += 6;
......@@ -293,6 +296,7 @@ static inline bool tomoyo_scan_transition
const enum tomoyo_transition_type type)
{
const struct tomoyo_transition_control *ptr;
list_for_each_entry_rcu(ptr, list, head.list) {
if (ptr->head.is_deleted || ptr->type != type)
continue;
......@@ -338,9 +342,11 @@ static enum tomoyo_transition_type tomoyo_transition_type
{
const char *last_name = tomoyo_last_word(domainname->name);
enum tomoyo_transition_type type = TOMOYO_TRANSITION_CONTROL_NO_RESET;
while (type < TOMOYO_MAX_TRANSITION_TYPE) {
const struct list_head * const list =
&ns->policy_list[TOMOYO_ID_TRANSITION_CONTROL];
if (!tomoyo_scan_transition(list, domainname, program,
last_name, type)) {
type++;
......@@ -375,6 +381,7 @@ static bool tomoyo_same_aggregator(const struct tomoyo_acl_head *a,
head);
const struct tomoyo_aggregator *p2 = container_of(b, typeof(*p2),
head);
return p1->original_name == p2->original_name &&
p1->aggregated_name == p2->aggregated_name;
}
......@@ -394,6 +401,7 @@ int tomoyo_write_aggregator(struct tomoyo_acl_param *param)
int error = param->is_delete ? -ENOENT : -ENOMEM;
const char *original_name = tomoyo_read_token(param);
const char *aggregated_name = tomoyo_read_token(param);
if (!tomoyo_correct_word(original_name) ||
!tomoyo_correct_path(aggregated_name))
return -EINVAL;
......@@ -426,6 +434,7 @@ static struct tomoyo_policy_namespace *tomoyo_find_namespace
(const char *name, const unsigned int len)
{
struct tomoyo_policy_namespace *ns;
list_for_each_entry(ns, &tomoyo_namespace_list, namespace_list) {
if (strncmp(name, ns->name, len) ||
(name[len] && name[len] != ' '))
......@@ -451,6 +460,7 @@ struct tomoyo_policy_namespace *tomoyo_assign_namespace(const char *domainname)
struct tomoyo_policy_namespace *entry;
const char *cp = domainname;
unsigned int len = 0;
while (*cp && *cp++ != ' ')
len++;
ptr = tomoyo_find_namespace(domainname, len);
......@@ -466,6 +476,7 @@ struct tomoyo_policy_namespace *tomoyo_assign_namespace(const char *domainname)
ptr = tomoyo_find_namespace(domainname, len);
if (!ptr && tomoyo_memory_ok(entry)) {
char *name = (char *) (entry + 1);
ptr = entry;
memmove(name, domainname, len);
name[len] = '\0';
......@@ -490,6 +501,7 @@ static bool tomoyo_namespace_jump(const char *domainname)
{
const char *namespace = tomoyo_current_namespace()->name;
const int len = strlen(namespace);
return strncmp(domainname, namespace, len) ||
(domainname[len] && domainname[len] != ' ');
}
......@@ -510,6 +522,7 @@ struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
struct tomoyo_domain_info e = { };
struct tomoyo_domain_info *entry = tomoyo_find_domain(domainname);
bool created = false;
if (entry) {
if (transit) {
/*
......@@ -546,6 +559,7 @@ struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
*/
if (transit) {
const struct tomoyo_domain_info *domain = tomoyo_domain();
e.profile = domain->profile;
e.group = domain->group;
}
......@@ -569,6 +583,7 @@ struct tomoyo_domain_info *tomoyo_assign_domain(const char *domainname,
if (entry && transit) {
if (created) {
struct tomoyo_request_info r;
tomoyo_init_request_info(&r, entry,
TOMOYO_MAC_FILE_EXECUTE);
r.granted = false;
......@@ -712,6 +727,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
struct tomoyo_aggregator *ptr;
struct list_head *list =
&old_domain->ns->policy_list[TOMOYO_ID_AGGREGATOR];
/* Check 'aggregator' directive. */
candidate = &exename;
list_for_each_entry_rcu(ptr, list, head.list) {
......@@ -747,6 +763,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
*/
if (ee->transition) {
const char *domainname = ee->transition->name;
reject_on_transition_failure = true;
if (!strcmp(domainname, "keep"))
goto force_keep_domain;
......@@ -758,6 +775,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
goto force_initialize_domain;
if (!strcmp(domainname, "parent")) {
char *cp;
strncpy(ee->tmp, old_domain->domainname->name,
TOMOYO_EXEC_TMPSIZE - 1);
cp = strrchr(ee->tmp, ' ');
......@@ -822,8 +840,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
if (domain)
retval = 0;
else if (reject_on_transition_failure) {
printk(KERN_WARNING "ERROR: Domain '%s' not ready.\n",
ee->tmp);
pr_warn("ERROR: Domain '%s' not ready.\n", ee->tmp);
retval = -ENOMEM;
} else if (ee->r.mode == TOMOYO_CONFIG_ENFORCING)
retval = -ENOMEM;
......@@ -834,8 +851,7 @@ int tomoyo_find_next_domain(struct linux_binprm *bprm)
ee->r.granted = false;
tomoyo_write_log(&ee->r, "%s", tomoyo_dif
[TOMOYO_DIF_TRANSITION_FAILED]);
printk(KERN_WARNING
"ERROR: Domain '%s' not defined.\n", ee->tmp);
pr_warn("ERROR: Domain '%s' not defined.\n", ee->tmp);
}
}
out:
......
security/tomoyo/file.c
View file @ cdcf6723
......@@ -214,6 +214,7 @@ static int tomoyo_audit_path_number_log(struct tomoyo_request_info *r)
const u8 type = r->param.path_number.operation;
u8 radix;
char buffer[64];
switch (type) {
case TOMOYO_TYPE_CREATE:
case TOMOYO_TYPE_MKDIR:
......@@ -253,6 +254,7 @@ static bool tomoyo_check_path_acl(struct tomoyo_request_info *r,
{
const struct tomoyo_path_acl *acl = container_of(ptr, typeof(*acl),
head);
if (acl->perm & (1 << r->param.path.operation)) {
r->param.path.matched_path =
tomoyo_compare_name_union(r->param.path.filename,
......@@ -275,6 +277,7 @@ static bool tomoyo_check_path_number_acl(struct tomoyo_request_info *r,
{
const struct tomoyo_path_number_acl *acl =
container_of(ptr, typeof(*acl), head);
return (acl->perm & (1 << r->param.path_number.operation)) &&
tomoyo_compare_number_union(r->param.path_number.number,
&acl->number) &&
......@@ -295,6 +298,7 @@ static bool tomoyo_check_path2_acl(struct tomoyo_request_info *r,
{
const struct tomoyo_path2_acl *acl =
container_of(ptr, typeof(*acl), head);
return (acl->perm & (1 << r->param.path2.operation)) &&
tomoyo_compare_name_union(r->param.path2.filename1, &acl->name1)
&& tomoyo_compare_name_union(r->param.path2.filename2,
......@@ -314,6 +318,7 @@ static bool tomoyo_check_mkdev_acl(struct tomoyo_request_info *r,
{
const struct tomoyo_mkdev_acl *acl =
container_of(ptr, typeof(*acl), head);
return (acl->perm & (1 << r->param.mkdev.operation)) &&
tomoyo_compare_number_union(r->param.mkdev.mode,
&acl->mode) &&
......@@ -338,6 +343,7 @@ static bool tomoyo_same_path_acl(const struct tomoyo_acl_info *a,
{
const struct tomoyo_path_acl *p1 = container_of(a, typeof(*p1), head);
const struct tomoyo_path_acl *p2 = container_of(b, typeof(*p2), head);
return tomoyo_same_name_union(&p1->name, &p2->name);
}
......@@ -358,6 +364,7 @@ static bool tomoyo_merge_path_acl(struct tomoyo_acl_info *a,
->perm;
u16 perm = *a_perm;
const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm;
if (is_delete)
perm &= ~b_perm;
else
......@@ -384,6 +391,7 @@ static int tomoyo_update_path_acl(const u16 perm,
.perm = perm
};
int error;
if (!tomoyo_parse_name_union(param, &e.name))
error = -EINVAL;
else
......@@ -407,6 +415,7 @@ static bool tomoyo_same_mkdev_acl(const struct tomoyo_acl_info *a,
{
const struct tomoyo_mkdev_acl *p1 = container_of(a, typeof(*p1), head);
const struct tomoyo_mkdev_acl *p2 = container_of(b, typeof(*p2), head);
return tomoyo_same_name_union(&p1->name, &p2->name) &&
tomoyo_same_number_union(&p1->mode, &p2->mode) &&
tomoyo_same_number_union(&p1->major, &p2->major) &&
......@@ -431,6 +440,7 @@ static bool tomoyo_merge_mkdev_acl(struct tomoyo_acl_info *a,
u8 perm = *a_perm;
const u8 b_perm = container_of(b, struct tomoyo_mkdev_acl, head)
->perm;
if (is_delete)
perm &= ~b_perm;
else
......@@ -457,6 +467,7 @@ static int tomoyo_update_mkdev_acl(const u8 perm,
.perm = perm
};
int error;
if (!tomoyo_parse_name_union(param, &e.name) ||
!tomoyo_parse_number_union(param, &e.mode) ||
!tomoyo_parse_number_union(param, &e.major) ||
......@@ -486,6 +497,7 @@ static bool tomoyo_same_path2_acl(const struct tomoyo_acl_info *a,
{
const struct tomoyo_path2_acl *p1 = container_of(a, typeof(*p1), head);
const struct tomoyo_path2_acl *p2 = container_of(b, typeof(*p2), head);
return tomoyo_same_name_union(&p1->name1, &p2->name1) &&
tomoyo_same_name_union(&p1->name2, &p2->name2);
}
......@@ -507,6 +519,7 @@ static bool tomoyo_merge_path2_acl(struct tomoyo_acl_info *a,
->perm;
u8 perm = *a_perm;
const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm;
if (is_delete)
perm &= ~b_perm;
else
......@@ -533,6 +546,7 @@ static int tomoyo_update_path2_acl(const u8 perm,
.perm = perm
};
int error;
if (!tomoyo_parse_name_union(param, &e.name1) ||
!tomoyo_parse_name_union(param, &e.name2))
error = -EINVAL;
......@@ -621,6 +635,7 @@ static bool tomoyo_same_path_number_acl(const struct tomoyo_acl_info *a,
head);
const struct tomoyo_path_number_acl *p2 = container_of(b, typeof(*p2),
head);
return tomoyo_same_name_union(&p1->name, &p2->name) &&
tomoyo_same_number_union(&p1->number, &p2->number);
}
......@@ -643,6 +658,7 @@ static bool tomoyo_merge_path_number_acl(struct tomoyo_acl_info *a,
u8 perm = *a_perm;
const u8 b_perm = container_of(b, struct tomoyo_path_number_acl, head)
->perm;
if (is_delete)
perm &= ~b_perm;
else
......@@ -667,6 +683,7 @@ static int tomoyo_update_path_number_acl(const u8 perm,
.perm = perm
};
int error;
if (!tomoyo_parse_name_union(param, &e.name) ||
!tomoyo_parse_number_union(param, &e.number))
error = -EINVAL;
......@@ -947,6 +964,7 @@ static bool tomoyo_same_mount_acl(const struct tomoyo_acl_info *a,
{
const struct tomoyo_mount_acl *p1 = container_of(a, typeof(*p1), head);
const struct tomoyo_mount_acl *p2 = container_of(b, typeof(*p2), head);
return tomoyo_same_name_union(&p1->dev_name, &p2->dev_name) &&
tomoyo_same_name_union(&p1->dir_name, &p2->dir_name) &&
tomoyo_same_name_union(&p1->fs_type, &p2->fs_type) &&
......@@ -966,6 +984,7 @@ static int tomoyo_update_mount_acl(struct tomoyo_acl_param *param)
{
struct tomoyo_mount_acl e = { .head.type = TOMOYO_TYPE_MOUNT_ACL };
int error;
if (!tomoyo_parse_name_union(param, &e.dev_name) ||
!tomoyo_parse_name_union(param, &e.dir_name) ||
!tomoyo_parse_name_union(param, &e.fs_type) ||
......@@ -995,6 +1014,7 @@ int tomoyo_write_file(struct tomoyo_acl_param *param)
u16 perm = 0;
u8 type;
const char *operation = tomoyo_read_token(param);
for (type = 0; type < TOMOYO_MAX_PATH_OPERATION; type++)
if (tomoyo_permstr(operation, tomoyo_path_keyword[type]))
perm |= 1 << type;
......
security/tomoyo/gc.c
View file @ cdcf6723
......@@ -77,11 +77,13 @@ static bool tomoyo_name_used_by_io_buffer(const char *string)
spin_lock(&tomoyo_io_buffer_list_lock);
list_for_each_entry(head, &tomoyo_io_buffer_list, list) {
int i;
head->users++;
spin_unlock(&tomoyo_io_buffer_list_lock);
mutex_lock(&head->io_sem);
for (i = 0; i < TOMOYO_MAX_IO_READ_QUEUE; i++) {
const char *w = head->r.w[i];
if (w < string || w > string + size)
continue;
in_use = true;
......@@ -108,6 +110,7 @@ static inline void tomoyo_del_transition_control(struct list_head *element)
{
struct tomoyo_transition_control *ptr =
container_of(element, typeof(*ptr), head.list);
tomoyo_put_name(ptr->domainname);
tomoyo_put_name(ptr->program);
}
......@@ -123,6 +126,7 @@ static inline void tomoyo_del_aggregator(struct list_head *element)
{
struct tomoyo_aggregator *ptr =
container_of(element, typeof(*ptr), head.list);
tomoyo_put_name(ptr->original_name);
tomoyo_put_name(ptr->aggregated_name);
}
......@@ -138,6 +142,7 @@ static inline void tomoyo_del_manager(struct list_head *element)
{
struct tomoyo_manager *ptr =
container_of(element, typeof(*ptr), head.list);
tomoyo_put_name(ptr->manager);
}
......@@ -152,6 +157,7 @@ static void tomoyo_del_acl(struct list_head *element)
{
struct tomoyo_acl_info *acl =
container_of(element, typeof(*acl), list);
tomoyo_put_condition(acl->cond);
switch (acl->type) {
case TOMOYO_TYPE_PATH_ACL:
......@@ -226,6 +232,7 @@ static void tomoyo_del_acl(struct list_head *element)
{
struct tomoyo_task_acl *entry =
container_of(acl, typeof(*entry), head);
tomoyo_put_name(entry->domainname);
}
break;
......@@ -247,6 +254,7 @@ static inline void tomoyo_del_domain(struct list_head *element)
container_of(element, typeof(*domain), list);
struct tomoyo_acl_info *acl;
struct tomoyo_acl_info *tmp;
/*
* Since this domain is referenced from neither
* "struct tomoyo_io_buffer" nor "struct cred"->security, we can delete
......@@ -286,6 +294,7 @@ void tomoyo_del_condition(struct list_head *element)
= (const struct tomoyo_argv *) (names_p + names_count);
const struct tomoyo_envp *envp
= (const struct tomoyo_envp *) (argv + argc);
for (i = 0; i < numbers_count; i++)
tomoyo_put_number_union(numbers_p++);
for (i = 0; i < names_count; i++)
......@@ -321,6 +330,7 @@ static inline void tomoyo_del_path_group(struct list_head *element)
{
struct tomoyo_path_group *member =
container_of(element, typeof(*member), head.list);
tomoyo_put_name(member->member_name);
}
......@@ -335,6 +345,7 @@ static inline void tomoyo_del_group(struct list_head *element)
{
struct tomoyo_group *group =
container_of(element, typeof(*group), head.list);
tomoyo_put_name(group->group_name);
}
......@@ -476,6 +487,7 @@ static void tomoyo_collect_member(const enum tomoyo_policy_id id,
{
struct tomoyo_acl_head *member;
struct tomoyo_acl_head *tmp;
list_for_each_entry_safe(member, tmp, member_list, list) {
if (!member->is_deleted)
continue;
......@@ -495,6 +507,7 @@ static void tomoyo_collect_acl(struct list_head *list)
{
struct tomoyo_acl_info *acl;
struct tomoyo_acl_info *tmp;
list_for_each_entry_safe(acl, tmp, list, list) {
if (!acl->is_deleted)
continue;
......@@ -513,10 +526,12 @@ static void tomoyo_collect_entry(void)
int i;
enum tomoyo_policy_id id;
struct tomoyo_policy_namespace *ns;
mutex_lock(&tomoyo_policy_lock);
{
struct tomoyo_domain_info *domain;
struct tomoyo_domain_info *tmp;
list_for_each_entry_safe(domain, tmp, &tomoyo_domain_list,
list) {
tomoyo_collect_acl(&domain->acl_info_list);
......@@ -534,6 +549,7 @@ static void tomoyo_collect_entry(void)
{
struct tomoyo_shared_acl_head *ptr;
struct tomoyo_shared_acl_head *tmp;
list_for_each_entry_safe(ptr, tmp, &tomoyo_condition_list,
list) {
if (atomic_read(&ptr->users) > 0)
......@@ -547,6 +563,7 @@ static void tomoyo_collect_entry(void)
struct list_head *list = &ns->group_list[i];
struct tomoyo_group *group;
struct tomoyo_group *tmp;
switch (i) {
case 0:
id = TOMOYO_ID_PATH_GROUP;
......@@ -574,6 +591,7 @@ static void tomoyo_collect_entry(void)
struct list_head *list = &tomoyo_name_list[i];
struct tomoyo_shared_acl_head *ptr;
struct tomoyo_shared_acl_head *tmp;
list_for_each_entry_safe(ptr, tmp, list, list) {
if (atomic_read(&ptr->users) > 0)
continue;
......@@ -595,6 +613,7 @@ static int tomoyo_gc_thread(void *unused)
{
/* Garbage collector thread is exclusive. */
static DEFINE_MUTEX(tomoyo_gc_mutex);
if (!mutex_trylock(&tomoyo_gc_mutex))
goto out;
tomoyo_collect_entry();
......
security/tomoyo/group.c
View file @ cdcf6723
......@@ -75,11 +75,13 @@ int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type)
{
struct tomoyo_group *group = tomoyo_get_group(param, type);
int error = -EINVAL;
if (!group)
return -ENOMEM;
param->list = &group->member_list;
if (type == TOMOYO_PATH_GROUP) {
struct tomoyo_path_group e = { };
e.member_name = tomoyo_get_name(tomoyo_read_token(param));
if (!e.member_name) {
error = -ENOMEM;
......@@ -90,6 +92,7 @@ int tomoyo_write_group(struct tomoyo_acl_param *param, const u8 type)
tomoyo_put_name(e.member_name);
} else if (type == TOMOYO_NUMBER_GROUP) {
struct tomoyo_number_group e = { };
if (param->data[0] == '@' ||
!tomoyo_parse_number_union(param, &e.number))
goto out;
......@@ -129,6 +132,7 @@ tomoyo_path_matches_group(const struct tomoyo_path_info *pathname,
const struct tomoyo_group *group)
{
struct tomoyo_path_group *member;
list_for_each_entry_rcu(member, &group->member_list, head.list) {
if (member->head.is_deleted)
continue;
......@@ -156,6 +160,7 @@ bool tomoyo_number_matches_group(const unsigned long min,
{
struct tomoyo_number_group *member;
bool matched = false;
list_for_each_entry_rcu(member, &group->member_list, head.list) {
if (member->head.is_deleted)
continue;
......
security/tomoyo/load_policy.c
View file @ cdcf6723
......@@ -37,11 +37,12 @@ __setup("TOMOYO_loader=", tomoyo_loader_setup);
static bool tomoyo_policy_loader_exists(void)
{
struct path path;
if (!tomoyo_loader)
tomoyo_loader = CONFIG_SECURITY_TOMOYO_POLICY_LOADER;
if (kern_path(tomoyo_loader, LOOKUP_FOLLOW, &path)) {
printk(KERN_INFO "Not activating Mandatory Access Control "
"as %s does not exist.\n", tomoyo_loader);
pr_info("Not activating Mandatory Access Control as %s does not exist.\n",
tomoyo_loader);
return false;
}
path_put(&path);
......@@ -96,8 +97,7 @@ void tomoyo_load_policy(const char *filename)
if (!tomoyo_policy_loader_exists())
return;
done = true;
printk(KERN_INFO "Calling %s to load policy. Please wait.\n",
tomoyo_loader);
pr_info("Calling %s to load policy. Please wait.\n", tomoyo_loader);
argv[0] = (char *) tomoyo_loader;
argv[1] = NULL;
envp[0] = "HOME=/";
......
security/tomoyo/memory.c
View file @ cdcf6723
......@@ -19,9 +19,9 @@ void tomoyo_warn_oom(const char *function)
/* Reduce error messages. */
static pid_t tomoyo_last_pid;
const pid_t pid = current->pid;
if (tomoyo_last_pid != pid) {
printk(KERN_WARNING "ERROR: Out of memory at %s.\n",
function);
pr_warn("ERROR: Out of memory at %s.\n", function);
tomoyo_last_pid = pid;
}
if (!tomoyo_policy_loaded)
......@@ -48,6 +48,7 @@ bool tomoyo_memory_ok(void *ptr)
{
if (ptr) {
const size_t s = ksize(ptr);
tomoyo_memory_used[TOMOYO_MEMORY_POLICY] += s;
if (!tomoyo_memory_quota[TOMOYO_MEMORY_POLICY] ||
tomoyo_memory_used[TOMOYO_MEMORY_POLICY] <=
......@@ -73,6 +74,7 @@ bool tomoyo_memory_ok(void *ptr)
void *tomoyo_commit_ok(void *data, const unsigned int size)
{
void *ptr = kzalloc(size, GFP_NOFS);
if (tomoyo_memory_ok(ptr)) {
memmove(ptr, data, size);
memset(data, 0, size);
......@@ -98,6 +100,7 @@ struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
struct list_head *list;
const char *group_name = tomoyo_read_token(param);
bool found = false;
if (!tomoyo_correct_word(group_name) || idx >= TOMOYO_MAX_GROUP)
return NULL;
e.group_name = tomoyo_get_name(group_name);
......@@ -116,6 +119,7 @@ struct tomoyo_group *tomoyo_get_group(struct tomoyo_acl_param *param,
}
if (!found) {
struct tomoyo_group *entry = tomoyo_commit_ok(&e, sizeof(e));
if (entry) {
INIT_LIST_HEAD(&entry->member_list);
atomic_set(&entry->head.users, 1);
......@@ -191,6 +195,7 @@ struct tomoyo_policy_namespace tomoyo_kernel_namespace;
void __init tomoyo_mm_init(void)
{
int idx;
for (idx = 0; idx < TOMOYO_MAX_HASH; idx++)
INIT_LIST_HEAD(&tomoyo_name_list[idx]);
tomoyo_kernel_namespace.name = "<kernel>";
......
security/tomoyo/mount.c
View file @ cdcf6723
......@@ -49,6 +49,7 @@ static bool tomoyo_check_mount_acl(struct tomoyo_request_info *r,
{
const struct tomoyo_mount_acl *acl =
container_of(ptr, typeof(*acl), head);
return tomoyo_compare_number_union(r->param.mount.flags,
&acl->flags) &&
tomoyo_compare_name_union(r->param.mount.type,
......@@ -89,6 +90,7 @@ static int tomoyo_mount_acl(struct tomoyo_request_info *r,
struct tomoyo_path_info rdir;
int need_dev = 0;
int error = -ENOMEM;
r->obj = &obj;
/* Get fstype. */
......
security/tomoyo/realpath.c
View file @ cdcf6723
......@@ -94,11 +94,13 @@ static char *tomoyo_get_absolute_path(const struct path *path, char * const buff
const int buflen)
{
char *pos = ERR_PTR(-ENOMEM);
if (buflen >= 256) {
/* go to whatever namespace root we are under */
pos = d_absolute_path(path, buffer, buflen - 1);
if (!IS_ERR(pos) && *pos == '/' && pos[1]) {
struct inode *inode = d_backing_inode(path->dentry);
if (inode && S_ISDIR(inode->i_mode)) {
buffer[buflen - 2] = '/';
buffer[buflen - 1] = '\0';
......@@ -123,10 +125,12 @@ static char *tomoyo_get_dentry_path(struct dentry *dentry, char * const buffer,
const int buflen)
{
char *pos = ERR_PTR(-ENOMEM);
if (buflen >= 256) {
pos = dentry_path_raw(dentry, buffer, buflen - 1);
if (!IS_ERR(pos) && *pos == '/' && pos[1]) {
struct inode *inode = d_backing_inode(dentry);
if (inode && S_ISDIR(inode->i_mode)) {
buffer[buflen - 2] = '/';
buffer[buflen - 1] = '\0';
......@@ -150,12 +154,14 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer,
{
struct super_block *sb = dentry->d_sb;
char *pos = tomoyo_get_dentry_path(dentry, buffer, buflen);
if (IS_ERR(pos))
return pos;
/* Convert from $PID to self if $PID is current thread. */
if (sb->s_magic == PROC_SUPER_MAGIC && *pos == '/') {
char *ep;
const pid_t pid = (pid_t) simple_strtoul(pos + 1, &ep, 10);
if (*ep == '/' && pid && pid ==
task_tgid_nr_ns(current, sb->s_fs_info)) {
pos = ep - 5;
......@@ -170,6 +176,7 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer,
goto prepend_filesystem_name;
{
struct inode *inode = d_backing_inode(sb->s_root);
/*
* Use filesystem name if filesystem does not support rename()
* operation.
......@@ -182,6 +189,7 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer,
char name[64];
int name_len;
const dev_t dev = sb->s_dev;
name[sizeof(name) - 1] = '\0';
snprintf(name, sizeof(name) - 1, "dev(%u,%u):", MAJOR(dev),
MINOR(dev));
......@@ -197,6 +205,7 @@ static char *tomoyo_get_local_path(struct dentry *dentry, char * const buffer,
{
const char *name = sb->s_type->name;
const int name_len = strlen(name);
pos -= name_len + 1;
if (pos < buffer)
goto out;
......@@ -223,10 +232,10 @@ static char *tomoyo_get_socket_name(const struct path *path, char * const buffer
struct inode *inode = d_backing_inode(path->dentry);
struct socket *sock = inode ? SOCKET_I(inode) : NULL;
struct sock *sk = sock ? sock->sk : NULL;
if (sk) {
snprintf(buffer, buflen, "socket:[family=%u:type=%u:"
"protocol=%u]", sk->sk_family, sk->sk_type,
sk->sk_protocol);
snprintf(buffer, buflen, "socket:[family=%u:type=%u:protocol=%u]",
sk->sk_family, sk->sk_type, sk->sk_protocol);
} else {
snprintf(buffer, buflen, "socket:[unknown]");
}
......@@ -255,12 +264,14 @@ char *tomoyo_realpath_from_path(const struct path *path)
unsigned int buf_len = PAGE_SIZE / 2;
struct dentry *dentry = path->dentry;
struct super_block *sb;
if (!dentry)
return NULL;
sb = dentry->d_sb;
while (1) {
char *pos;
struct inode *inode;
buf_len <<= 1;
kfree(buf);
buf = kmalloc(buf_len, GFP_NOFS);
......@@ -323,6 +334,7 @@ char *tomoyo_realpath_nofollow(const char *pathname)
if (pathname && kern_path(pathname, 0, &path) == 0) {
char *buf = tomoyo_realpath_from_path(&path);
path_put(&path);
return buf;
}
......
security/tomoyo/securityfs_if.c
View file @ cdcf6723
......@@ -21,6 +21,7 @@ static bool tomoyo_check_task_acl(struct tomoyo_request_info *r,
{
const struct tomoyo_task_acl *acl = container_of(ptr, typeof(*acl),
head);
return !tomoyo_pathcmp(r->param.task.domainname, acl->domainname);
}
......@@ -42,6 +43,7 @@ static ssize_t tomoyo_write_self(struct file *file, const char __user *buf,
{
char *data;
int error;
if (!count || count >= TOMOYO_EXEC_TMPSIZE - 10)
return -ENOMEM;
data = memdup_user_nul(buf, count);
......@@ -52,6 +54,7 @@ static ssize_t tomoyo_write_self(struct file *file, const char __user *buf,
const int idx = tomoyo_read_lock();
struct tomoyo_path_info name;
struct tomoyo_request_info r;
name.name = data;
tomoyo_fill_path_info(&name);
/* Check "task manual_domain_transition" permission. */
......@@ -100,6 +103,7 @@ static ssize_t tomoyo_read_self(struct file *file, char __user *buf,
const char *domain = tomoyo_domain()->domainname->name;
loff_t len = strlen(domain);
loff_t pos = *ppos;
if (pos >= len || !count)
return 0;
len -= pos;
......
security/tomoyo/tomoyo.c
View file @ cdcf6723
......@@ -105,6 +105,7 @@ static int tomoyo_bprm_check_security(struct linux_binprm *bprm)
if (!s->old_domain_info) {
const int idx = tomoyo_read_lock();
const int err = tomoyo_find_next_domain(bprm);
tomoyo_read_unlock(idx);
return err;
}
......@@ -151,6 +152,7 @@ static int tomoyo_path_truncate(const struct path *path)
static int tomoyo_path_unlink(const struct path *parent, struct dentry *dentry)
{
struct path path = { .mnt = parent->mnt, .dentry = dentry };
return tomoyo_path_perm(TOMOYO_TYPE_UNLINK, &path, NULL);
}
......@@ -167,6 +169,7 @@ static int tomoyo_path_mkdir(const struct path *parent, struct dentry *dentry,
umode_t mode)
{
struct path path = { .mnt = parent->mnt, .dentry = dentry };
return tomoyo_path_number_perm(TOMOYO_TYPE_MKDIR, &path,
mode & S_IALLUGO);
}
......@@ -182,6 +185,7 @@ static int tomoyo_path_mkdir(const struct path *parent, struct dentry *dentry,
static int tomoyo_path_rmdir(const struct path *parent, struct dentry *dentry)
{
struct path path = { .mnt = parent->mnt, .dentry = dentry };
return tomoyo_path_perm(TOMOYO_TYPE_RMDIR, &path, NULL);
}
......@@ -198,6 +202,7 @@ static int tomoyo_path_symlink(const struct path *parent, struct dentry *dentry,
const char *old_name)
{
struct path path = { .mnt = parent->mnt, .dentry = dentry };
return tomoyo_path_perm(TOMOYO_TYPE_SYMLINK, &path, old_name);
}
......@@ -255,6 +260,7 @@ static int tomoyo_path_link(struct dentry *old_dentry, const struct path *new_di
{
struct path path1 = { .mnt = new_dir->mnt, .dentry = old_dentry };
struct path path2 = { .mnt = new_dir->mnt, .dentry = new_dentry };
return tomoyo_path2_perm(TOMOYO_TYPE_LINK, &path1, &path2);
}
......@@ -275,6 +281,7 @@ static int tomoyo_path_rename(const struct path *old_parent,
{
struct path path1 = { .mnt = old_parent->mnt, .dentry = old_dentry };
struct path path2 = { .mnt = new_parent->mnt, .dentry = new_dentry };
return tomoyo_path2_perm(TOMOYO_TYPE_RENAME, &path1, &path2);
}
......@@ -306,11 +313,11 @@ static int tomoyo_file_fcntl(struct file *file, unsigned int cmd,
*/
static int tomoyo_file_open(struct file *f)
{
int flags = f->f_flags;
/* Don't check read permission here if called from do_execve(). */
if (current->in_execve)
return 0;
return tomoyo_check_open_permission(tomoyo_domain(), &f->f_path, flags);
return tomoyo_check_open_permission(tomoyo_domain(), &f->f_path,
f->f_flags);
}
/**
......@@ -354,6 +361,7 @@ static int tomoyo_path_chmod(const struct path *path, umode_t mode)
static int tomoyo_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
{
int error = 0;
if (uid_valid(uid))
error = tomoyo_path_number_perm(TOMOYO_TYPE_CHOWN, path,
from_kuid(&init_user_ns, uid));
......@@ -403,6 +411,7 @@ static int tomoyo_sb_mount(const char *dev_name, const struct path *path,
static int tomoyo_sb_umount(struct vfsmount *mnt, int flags)
{
struct path path = { .mnt = mnt, .dentry = mnt->mnt_root };
return tomoyo_path_perm(TOMOYO_TYPE_UMOUNT, &path, NULL);
}
......@@ -573,7 +582,7 @@ static int __init tomoyo_init(void)
/* register ourselves with the security framework */
security_add_hooks(tomoyo_hooks, ARRAY_SIZE(tomoyo_hooks), "tomoyo");
printk(KERN_INFO "TOMOYO Linux initialized\n");
pr_info("TOMOYO Linux initialized\n");
s->domain_info = &tomoyo_kernel_domain;
atomic_inc(&tomoyo_kernel_domain.users);
s->old_domain_info = NULL;
......
security/tomoyo/util.c
View file @ cdcf6723
......@@ -91,6 +91,7 @@ const u8 tomoyo_index2category[TOMOYO_MAX_MAC_INDEX] = {
void tomoyo_convert_time(time64_t time64, struct tomoyo_time *stamp)
{
struct tm tm;
time64_to_tm(time64, 0, &tm);
stamp->sec = tm.tm_sec;
stamp->min = tm.tm_min;
......@@ -113,6 +114,7 @@ void tomoyo_convert_time(time64_t time64, struct tomoyo_time *stamp)
bool tomoyo_permstr(const char *string, const char *keyword)
{
const char *cp = strstr(string, keyword);
if (cp)
return cp == string || *(cp - 1) == '/';
return false;
......@@ -132,6 +134,7 @@ char *tomoyo_read_token(struct tomoyo_acl_param *param)
{
char *pos = param->data;
char *del = strchr(pos, ' ');
if (del)
*del++ = '\0';
else
......@@ -152,6 +155,7 @@ const struct tomoyo_path_info *tomoyo_get_domainname
{
char *start = param->data;
char *pos = start;
while (*pos) {
if (*pos++ != ' ' || *pos++ == '/')
continue;
......@@ -181,8 +185,10 @@ u8 tomoyo_parse_ulong(unsigned long *result, char **str)
const char *cp = *str;
char *ep;
int base = 10;
if (*cp == '0') {
char c = *(cp + 1);
if (c == 'x' || c == 'X') {
base = 16;
cp += 2;
......@@ -240,6 +246,7 @@ bool tomoyo_parse_name_union(struct tomoyo_acl_param *param,
struct tomoyo_name_union *ptr)
{
char *filename;
if (param->data[0] == '@') {
param->data++;
ptr->group = tomoyo_get_group(param, TOMOYO_PATH_GROUP);
......@@ -266,6 +273,7 @@ bool tomoyo_parse_number_union(struct tomoyo_acl_param *param,
char *data;
u8 type;
unsigned long v;
memset(ptr, 0, sizeof(*ptr));
if (param->data[0] == '@') {
param->data++;
......@@ -429,6 +437,7 @@ static bool tomoyo_correct_word2(const char *string, size_t len)
unsigned char c;
unsigned char d;
unsigned char e;
if (!len)
goto out;
while (len--) {
......@@ -533,6 +542,7 @@ bool tomoyo_correct_domain(const unsigned char *domainname)
return true;
while (1) {
const unsigned char *cp = strchr(domainname, ' ');
if (!cp)
break;
if (*domainname != '/' ||
......@@ -554,6 +564,7 @@ bool tomoyo_domain_def(const unsigned char *buffer)
{
const unsigned char *cp;
int len;
if (*buffer != '<')
return false;
cp = strchr(buffer, ' ');
......@@ -668,6 +679,9 @@ static bool tomoyo_file_matches_pattern2(const char *filename,
{
while (filename < filename_end && pattern < pattern_end) {
char c;
int i;
int j;
if (*pattern != '\\') {
if (*filename++ != *pattern++)
return false;
......@@ -676,8 +690,6 @@ static bool tomoyo_file_matches_pattern2(const char *filename,
c = *filename;
pattern++;
switch (*pattern) {
int i;
int j;
case '?':
if (c == '/') {
return false;
......@@ -985,6 +997,7 @@ int tomoyo_init_request_info(struct tomoyo_request_info *r,
struct tomoyo_domain_info *domain, const u8 index)
{
u8 profile;
memset(r, 0, sizeof(*r));
if (!domain)
domain = tomoyo_domain();
......@@ -1018,6 +1031,7 @@ bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r)
list_for_each_entry_rcu(ptr, &domain->acl_info_list, list) {
u16 perm;
u8 i;
if (ptr->is_deleted)
continue;
switch (ptr->type) {
......@@ -1062,9 +1076,8 @@ bool tomoyo_domain_quota_is_ok(struct tomoyo_request_info *r)
domain->flags[TOMOYO_DIF_QUOTA_WARNED] = true;
/* r->granted = false; */
tomoyo_write_log(r, "%s", tomoyo_dif[TOMOYO_DIF_QUOTA_WARNED]);
printk(KERN_WARNING "WARNING: "
"Domain '%s' has too many ACLs to hold. "
"Stopped learning mode.\n", domain->domainname->name);
pr_warn("WARNING: Domain '%s' has too many ACLs to hold. Stopped learning mode.\n",
domain->domainname->name);
}
return false;
}
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