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[1.0] Drop Non-GKI Support (#1483)

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Co-authored-by: weishu <twsxtd@gmail.com>
This commit is contained in:
Ylarod
2024-06-01 14:50:46 +08:00
committed by GitHub
parent b766b98513
commit 898e9d4f8c
14 changed files with 11 additions and 581 deletions
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217
kernel/selinux/sepolicy.c
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@@ -524,7 +524,6 @@ static bool add_filename_trans(struct policydb *db, const char *s,
return false;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 7, 0)
struct filename_trans_key key;
key.ttype = tgt->value;
key.tclass = cls->value;
@@ -532,13 +531,8 @@ static bool add_filename_trans(struct policydb *db, const char *s,
struct filename_trans_datum *last = NULL;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 9, 0)
struct filename_trans_datum *trans =
policydb_filenametr_search(db, &key);
#else
struct filename_trans_datum *trans =
hashtab_search(&db->filename_trans, &key);
#endif
while (trans) {
if (ebitmap_get_bit(&trans->stypes, src->value - 1)) {
// Duplicate, overwrite existing data and return
@@ -567,39 +561,6 @@ static bool add_filename_trans(struct policydb *db, const char *s,
db->compat_filename_trans_count++;
return ebitmap_set_bit(&trans->stypes, src->value - 1, 1) == 0;
#else // < 5.7.0, has no filename_trans_key, but struct filename_trans
struct filename_trans key;
key.ttype = tgt->value;
key.tclass = cls->value;
key.name = (char *)o;
struct filename_trans_datum *trans =
hashtab_search(db->filename_trans, &key);
if (trans == NULL) {
trans = (struct filename_trans_datum *)kcalloc(sizeof(*trans),
1, GFP_ATOMIC);
if (!trans) {
pr_err("add_filename_trans: Failed to alloc datum\n");
return false;
}
struct filename_trans *new_key =
(struct filename_trans *)kmalloc(sizeof(*new_key),
GFP_ATOMIC);
if (!new_key) {
pr_err("add_filename_trans: Failed to alloc new_key\n");
return false;
}
*new_key = key;
new_key->name = kstrdup(key.name, GFP_ATOMIC);
trans->otype = def->value;
hashtab_insert(db->filename_trans, new_key, trans);
}
return ebitmap_set_bit(&db->filename_trans_ttypes, src->value - 1, 1) ==
0;
#endif
}
static bool add_genfscon(struct policydb *db, const char *fs_name,
@@ -626,7 +587,6 @@ static void *ksu_realloc(void *old, size_t new_size, size_t old_size)
static bool add_type(struct policydb *db, const char *type_name, bool attr)
{
#ifdef KSU_SUPPORT_ADD_TYPE
struct type_datum *type = symtab_search(&db->p_types, type_name);
if (type) {
pr_warn("Type %s already exists\n", type_name);
@@ -656,7 +616,6 @@ static bool add_type(struct policydb *db, const char *type_name, bool attr)
return false;
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0)
struct ebitmap *new_type_attr_map_array =
ksu_realloc(db->type_attr_map_array,
value * sizeof(struct ebitmap),
@@ -703,171 +662,6 @@ static bool add_type(struct policydb *db, const char *type_name, bool attr)
}
return true;
#elif defined(CONFIG_IS_HW_HISI)
/*
* Huawei use type_attr_map and type_val_to_struct.
* And use ebitmap not flex_array.
*/
size_t new_size = sizeof(struct ebitmap) * db->p_types.nprim;
struct ebitmap *new_type_attr_map =
(krealloc(db->type_attr_map, new_size, GFP_ATOMIC));
struct type_datum **new_type_val_to_struct =
krealloc(db->type_val_to_struct,
sizeof(*db->type_val_to_struct) * db->p_types.nprim,
GFP_ATOMIC);
if (!new_type_attr_map) {
pr_err("add_type: alloc type_attr_map failed\n");
return false;
}
if (!new_type_val_to_struct) {
pr_err("add_type: alloc type_val_to_struct failed\n");
return false;
}
char **new_val_to_name_types =
krealloc(db->sym_val_to_name[SYM_TYPES],
sizeof(char *) * db->symtab[SYM_TYPES].nprim,
GFP_KERNEL);
if (!new_val_to_name_types) {
pr_err("add_type: alloc val_to_name failed\n");
return false;
}
db->type_attr_map = new_type_attr_map;
ebitmap_init(&db->type_attr_map[value - 1], HISI_SELINUX_EBITMAP_RO);
ebitmap_set_bit(&db->type_attr_map[value - 1], value - 1, 1);
db->type_val_to_struct = new_type_val_to_struct;
db->type_val_to_struct[value - 1] = type;
db->sym_val_to_name[SYM_TYPES] = new_val_to_name_types;
db->sym_val_to_name[SYM_TYPES][value - 1] = key;
int i;
for (i = 0; i < db->p_roles.nprim; ++i) {
ebitmap_set_bit(&db->role_val_to_struct[i]->types, value - 1,
1);
}
return true;
#else
// flex_array is not extensible, we need to create a new bigger one instead
struct flex_array *new_type_attr_map_array =
flex_array_alloc(sizeof(struct ebitmap), db->p_types.nprim,
GFP_ATOMIC | __GFP_ZERO);
struct flex_array *new_type_val_to_struct =
flex_array_alloc(sizeof(struct type_datum *), db->p_types.nprim,
GFP_ATOMIC | __GFP_ZERO);
struct flex_array *new_val_to_name_types =
flex_array_alloc(sizeof(char *), db->symtab[SYM_TYPES].nprim,
GFP_ATOMIC | __GFP_ZERO);
if (!new_type_attr_map_array) {
pr_err("add_type: alloc type_attr_map_array failed\n");
return false;
}
if (!new_type_val_to_struct) {
pr_err("add_type: alloc type_val_to_struct failed\n");
return false;
}
if (!new_val_to_name_types) {
pr_err("add_type: alloc val_to_name failed\n");
return false;
}
// preallocate so we don't have to worry about the put ever failing
if (flex_array_prealloc(new_type_attr_map_array, 0, db->p_types.nprim,
GFP_ATOMIC | __GFP_ZERO)) {
pr_err("add_type: prealloc type_attr_map_array failed\n");
return false;
}
if (flex_array_prealloc(new_type_val_to_struct, 0, db->p_types.nprim,
GFP_ATOMIC | __GFP_ZERO)) {
pr_err("add_type: prealloc type_val_to_struct_array failed\n");
return false;
}
if (flex_array_prealloc(new_val_to_name_types, 0,
db->symtab[SYM_TYPES].nprim,
GFP_ATOMIC | __GFP_ZERO)) {
pr_err("add_type: prealloc val_to_name_types failed\n");
return false;
}
int j;
void *old_elem;
// copy the old data or pointers to new flex arrays
for (j = 0; j < db->type_attr_map_array->total_nr_elements; j++) {
old_elem = flex_array_get(db->type_attr_map_array, j);
if (old_elem)
flex_array_put(new_type_attr_map_array, j, old_elem,
GFP_ATOMIC | __GFP_ZERO);
}
for (j = 0; j < db->type_val_to_struct_array->total_nr_elements; j++) {
old_elem = flex_array_get_ptr(db->type_val_to_struct_array, j);
if (old_elem)
flex_array_put_ptr(new_type_val_to_struct, j, old_elem,
GFP_ATOMIC | __GFP_ZERO);
}
for (j = 0; j < db->symtab[SYM_TYPES].nprim; j++) {
old_elem =
flex_array_get_ptr(db->sym_val_to_name[SYM_TYPES], j);
if (old_elem)
flex_array_put_ptr(new_val_to_name_types, j, old_elem,
GFP_ATOMIC | __GFP_ZERO);
}
// store the pointer of old flex arrays first, when assigning new ones we
// should free it
struct flex_array *old_fa;
old_fa = db->type_attr_map_array;
db->type_attr_map_array = new_type_attr_map_array;
if (old_fa) {
flex_array_free(old_fa);
}
ebitmap_init(flex_array_get(db->type_attr_map_array, value - 1));
ebitmap_set_bit(flex_array_get(db->type_attr_map_array, value - 1),
value - 1, 1);
old_fa = db->type_val_to_struct_array;
db->type_val_to_struct_array = new_type_val_to_struct;
if (old_fa) {
flex_array_free(old_fa);
}
flex_array_put_ptr(db->type_val_to_struct_array, value - 1, type,
GFP_ATOMIC | __GFP_ZERO);
old_fa = db->sym_val_to_name[SYM_TYPES];
db->sym_val_to_name[SYM_TYPES] = new_val_to_name_types;
if (old_fa) {
flex_array_free(old_fa);
}
flex_array_put_ptr(db->sym_val_to_name[SYM_TYPES], value - 1, key,
GFP_ATOMIC | __GFP_ZERO);
int i;
for (i = 0; i < db->p_roles.nprim; ++i) {
ebitmap_set_bit(&db->role_val_to_struct[i]->types, value - 1,
1);
}
return true;
#endif
#else
return false;
#endif
}
static bool set_type_state(struct policydb *db, const char *type_name,
@@ -902,18 +696,7 @@ static bool set_type_state(struct policydb *db, const char *type_name,
static void add_typeattribute_raw(struct policydb *db, struct type_datum *type,
struct type_datum *attr)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0)
struct ebitmap *sattr = &db->type_attr_map_array[type->value - 1];
#elif defined(CONFIG_IS_HW_HISI)
/*
* HISI_SELINUX_EBITMAP_RO is Huawei's unique features.
*/
struct ebitmap *sattr = &db->type_attr_map[type->value - 1],
HISI_SELINUX_EBITMAP_RO;
#else
struct ebitmap *sattr =
flex_array_get(db->type_attr_map_array, type->value - 1);
#endif
ebitmap_set_bit(sattr, attr->value - 1, 1);
struct hashtab_node *node;