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Add support for ptrace_child

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This commit is contained in:
Dan Walsh 2012-04-17 13:12:15 -04:00
parent a195d32913
commit 9d04e817bf
2 changed files with 28 additions and 240 deletions
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261
libsepol-rhat.patch
View File

@ -1,241 +1,24 @@
diff --git a/libsepol/include/sepol/policydb/policydb.h b/libsepol/include/sepol/policydb/policydb.h
index 1848a7b..f53a499 100644
--- a/libsepol/include/sepol/policydb/policydb.h
+++ b/libsepol/include/sepol/policydb/policydb.h
@@ -111,6 +111,19 @@ typedef struct class_datum {
symtab_t permissions; /* class-specific permission symbol table */
constraint_node_t *constraints; /* constraints on class permissions */
constraint_node_t *validatetrans; /* special transition rules */
+/* Options how a new object user and role should be decided */
+#define DEFAULT_SOURCE 1
+#define DEFAULT_TARGET 2
+ char default_user;
+ char default_role;
+/* Options how a new object range should be decided */
+#define DEFAULT_SOURCE_LOW 1
+#define DEFAULT_SOURCE_HIGH 2
+#define DEFAULT_SOURCE_LOW_HIGH 3
+#define DEFAULT_TARGET_LOW 4
+#define DEFAULT_TARGET_HIGH 5
+#define DEFAULT_TARGET_LOW_HIGH 6
+ char default_range;
} class_datum_t;
/* Role attributes */
@@ -667,10 +680,11 @@ extern int policydb_set_target_platform(policydb_t *p, int platform);
#define POLICYDB_VERSION_BOUNDARY 24
#define POLICYDB_VERSION_FILENAME_TRANS 25
#define POLICYDB_VERSION_ROLETRANS 26
+#define POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 27
/* Range of policy versions we understand*/
#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
-#define POLICYDB_VERSION_MAX POLICYDB_VERSION_ROLETRANS
+#define POLICYDB_VERSION_MAX POLICYDB_VERSION_NEW_OBJECT_DEFAULTS
/* Module versions and specific changes*/
#define MOD_POLICYDB_VERSION_BASE 4
@@ -686,9 +700,10 @@ extern int policydb_set_target_platform(policydb_t *p, int platform);
#define MOD_POLICYDB_VERSION_ROLETRANS 12
#define MOD_POLICYDB_VERSION_ROLEATTRIB 13
#define MOD_POLICYDB_VERSION_TUNABLE_SEP 14
+#define MOD_POLICYDB_VERSION_NEW_OBJECT_DEFAULTS 15
#define MOD_POLICYDB_VERSION_MIN MOD_POLICYDB_VERSION_BASE
-#define MOD_POLICYDB_VERSION_MAX MOD_POLICYDB_VERSION_TUNABLE_SEP
+#define MOD_POLICYDB_VERSION_MAX MOD_POLICYDB_VERSION_NEW_OBJECT_DEFAULTS
#define POLICYDB_CONFIG_MLS 1
diff --git a/libsepol/src/expand.c b/libsepol/src/expand.c
index 493e478..73b9107 100644
--- a/libsepol/src/expand.c
+++ b/libsepol/src/expand.c
@@ -358,6 +358,35 @@ static int constraint_node_clone(constraint_node_t ** dst,
return -1;
}
+static int class_copy_default_new_object(expand_state_t *state,
+ class_datum_t *olddatum,
+ class_datum_t *newdatum)
+{
+ if (olddatum->default_user) {
+ if (newdatum->default_user && olddatum->default_user != newdatum->default_user) {
+ ERR(state->handle, "Found conflicting default user definitions");
+ return SEPOL_ENOTSUP;
+ }
+ newdatum->default_user = olddatum->default_user;
+
+ }
+ if (olddatum->default_role) {
+ if (newdatum->default_role && olddatum->default_role != newdatum->default_role) {
+ ERR(state->handle, "Found conflicting default role definitions");
+ return SEPOL_ENOTSUP;
+ }
+ newdatum->default_role = olddatum->default_role;
+ }
+ if (olddatum->default_range) {
+ if (newdatum->default_range && olddatum->default_range != newdatum->default_range) {
+ ERR(state->handle, "Found conflicting default range definitions");
+ return SEPOL_ENOTSUP;
+ }
+ newdatum->default_range = olddatum->default_range;
+ }
+ return 0;
+}
+
static int class_copy_callback(hashtab_key_t key, hashtab_datum_t datum,
void *data)
{
@@ -393,6 +422,12 @@ static int class_copy_callback(hashtab_key_t key, hashtab_datum_t datum,
new_class->s.value = class->s.value;
state->out->p_classes.nprim++;
+ ret = class_copy_default_new_object(state, class, new_class);
+ if (ret) {
+ free(new_class);
+ return ret;
+ }
+
new_id = strdup(id);
if (!new_id) {
ERR(state->handle, "Out of memory!");
diff --git a/libsepol/src/link.c b/libsepol/src/link.c
index ee9675b..01d3231 100644
--- a/libsepol/src/link.c
+++ b/libsepol/src/link.c
@@ -205,6 +205,34 @@ static int permission_copy_callback(hashtab_key_t key, hashtab_datum_t datum,
return ret;
}
+static int class_copy_default_new_object(link_state_t *state,
+ class_datum_t *olddatum,
+ class_datum_t *newdatum)
+{
+ if (olddatum->default_user) {
+ if (newdatum->default_user && olddatum->default_user != newdatum->default_user) {
+ ERR(state->handle, "Found conflicting default user definitions");
+ return SEPOL_ENOTSUP;
+ }
+ newdatum->default_user = olddatum->default_user;
+ }
+ if (olddatum->default_role) {
+ if (newdatum->default_role && olddatum->default_role != newdatum->default_role) {
+ ERR(state->handle, "Found conflicting default role definitions");
+ return SEPOL_ENOTSUP;
+ }
+ newdatum->default_role = olddatum->default_role;
+ }
+ if (olddatum->default_range) {
+ if (newdatum->default_range && olddatum->default_range != newdatum->default_range) {
+ ERR(state->handle, "Found conflicting default range definitions");
+ return SEPOL_ENOTSUP;
+ }
+ newdatum->default_range = olddatum->default_range;
+ }
+ return 0;
+}
+
static int class_copy_callback(hashtab_key_t key, hashtab_datum_t datum,
void *data)
{
@@ -287,6 +315,11 @@ static int class_copy_callback(hashtab_key_t key, hashtab_datum_t datum,
state->dest_class = new_class;
state->dest_class_name = (char *)key;
+ /* copy default new object rules */
+ ret = class_copy_default_new_object(state, cladatum, new_class);
+ if (ret)
+ return ret;
+
ret =
hashtab_map(cladatum->permissions.table, permission_copy_callback,
state);
diff --git a/libsepol/src/policydb.c b/libsepol/src/policydb.c
index 136b450..a84de2f 100644
--- a/libsepol/src/policydb.c
+++ b/libsepol/src/policydb.c
@@ -151,6 +151,13 @@ static struct policydb_compat_info policydb_compat[] = {
.target_platform = SEPOL_TARGET_SELINUX,
},
{
+ .type = POLICY_KERN,
+ .version = POLICYDB_VERSION_NEW_OBJECT_DEFAULTS,
+ .sym_num = SYM_NUM,
+ .ocon_num = OCON_NODE6 + 1,
+ .target_platform = SEPOL_TARGET_SELINUX,
+ },
+ {
.type = POLICY_BASE,
.version = MOD_POLICYDB_VERSION_BASE,
.sym_num = SYM_NUM,
@@ -228,6 +235,13 @@ static struct policydb_compat_info policydb_compat[] = {
.target_platform = SEPOL_TARGET_SELINUX,
},
{
+ .type = POLICY_BASE,
+ .version = MOD_POLICYDB_VERSION_NEW_OBJECT_DEFAULTS,
+ .sym_num = SYM_NUM,
+ .ocon_num = OCON_NODE6 + 1,
+ .target_platform = SEPOL_TARGET_SELINUX,
+ },
+ {
.type = POLICY_MOD,
.version = MOD_POLICYDB_VERSION_BASE,
.sym_num = SYM_NUM,
@@ -304,6 +318,13 @@ static struct policydb_compat_info policydb_compat[] = {
.ocon_num = 0,
.target_platform = SEPOL_TARGET_SELINUX,
},
+ {
+ .type = POLICY_MOD,
+ .version = MOD_POLICYDB_VERSION_NEW_OBJECT_DEFAULTS,
+ .sym_num = SYM_NUM,
+ .ocon_num = 0,
+ .target_platform = SEPOL_TARGET_SELINUX,
+ },
diff --git a/libsepol/include/sepol/policydb/polcaps.h b/libsepol/include/sepol/policydb/polcaps.h
index 40c0a48..0ac2a1d 100644
--- a/libsepol/include/sepol/policydb/polcaps.h
+++ b/libsepol/include/sepol/policydb/polcaps.h
@@ -5,6 +5,7 @@
enum {
POLICYDB_CAPABILITY_NETPEER,
POLICYDB_CAPABILITY_OPENPERM,
+ POLICYDB_CAPABILITY_PTRACE_CHILD,
__POLICYDB_CAPABILITY_MAX
};
#define POLICYDB_CAPABILITY_MAX (__POLICYDB_CAPABILITY_MAX - 1)
diff --git a/libsepol/src/polcaps.c b/libsepol/src/polcaps.c
index 71970b1..e003bc7 100644
--- a/libsepol/src/polcaps.c
+++ b/libsepol/src/polcaps.c
@@ -8,6 +8,7 @@
static const char *polcap_names[] = {
"network_peer_controls", /* POLICYDB_CAPABILITY_NETPEER */
"open_perms", /* POLICYDB_CAPABILITY_OPENPERM */
+ "ptrace_child", /* POLICYDB_CAPABILITY_PTRACE_CHILD */
NULL
};
#if 0
@@ -2064,6 +2085,18 @@ static int class_read(policydb_t * p, hashtab_t h, struct policy_file *fp)
goto bad;
}
+ if ((p->policy_type == POLICY_KERN &&
+ p->policyvers >= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS) ||
+ (p->policy_type == POLICY_BASE &&
+ p->policyvers >= MOD_POLICYDB_VERSION_NEW_OBJECT_DEFAULTS)) {
+ rc = next_entry(buf, fp, sizeof(uint32_t) * 3);
+ if (rc < 0)
+ goto bad;
+ cladatum->default_user = le32_to_cpu(buf[0]);
+ cladatum->default_role = le32_to_cpu(buf[1]);
+ cladatum->default_range = le32_to_cpu(buf[2]);
+ }
+
if (hashtab_insert(h, key, cladatum))
goto bad;
diff --git a/libsepol/src/write.c b/libsepol/src/write.c
index e34ab52..22e6143 100644
--- a/libsepol/src/write.c
+++ b/libsepol/src/write.c
@@ -976,6 +976,18 @@ static int class_write(hashtab_key_t key, hashtab_datum_t datum, void *ptr)
return POLICYDB_ERROR;
}
+ if ((p->policy_type == POLICY_KERN &&
+ p->policyvers >= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS) ||
+ (p->policy_type == POLICY_BASE &&
+ p->policyvers >= MOD_POLICYDB_VERSION_NEW_OBJECT_DEFAULTS)) {
+ buf[0] = cpu_to_le32(cladatum->default_user);
+ buf[1] = cpu_to_le32(cladatum->default_role);
+ buf[2] = cpu_to_le32(cladatum->default_range);
+ items = put_entry(buf, sizeof(uint32_t), 3, fp);
+ if (items != 3)
+ return POLICYDB_ERROR;
+ }
+
return POLICYDB_SUCCESS;
}

7
libsepol.spec
View File

@ -1,10 +1,11 @@
Summary: SELinux binary policy manipulation library
Name: libsepol
Version: 2.1.5
Release: 1%{?dist}
Release: 2%{?dist}
License: LGPLv2+
Group: System Environment/Libraries
Source: http://www.nsa.gov/selinux/archives/libsepol-%{version}.tgz
Patch: libsepol-rhat.patch
URL: http://www.selinuxproject.org
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@ -44,6 +45,7 @@ needed for developing applications that manipulate binary policies.
%prep
%setup -q
%patch -p2 -b .rhat
# sparc64 is an -fPIC arch, so we need to fix it here
%ifarch sparc64
@ -97,6 +99,9 @@ exit 0
/%{_lib}/libsepol.so.1
%changelog
* Tue Apr 17 2012 Dan Walsh <dwalsh@redhat.com> - 2.1.5-2
- Add support for ptrace_child
* Thu Mar 29 2012 Dan Walsh <dwalsh@redhat.com> - 2.1.5-1
- Update to upstream
* checkpolicy: implement new default labeling behaviors