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exile.h
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test: Add test ensuring seccomp ends with default rule, minor fixes

This commit is contained in:
Albert S. 2021-08-16 23:32:27 +02:00
parent 25d8ed9bca
commit c44ce85628
1 changed files with 35 additions and 4 deletions
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39
test.c
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@ -5,6 +5,17 @@
#include <sys/types.h>
#include <sys/socket.h>
int xqssb_enable_policy(struct qssb_policy *policy)
{
int ret = qssb_enable_policy(policy);
if(ret != 0)
{
fprintf(stderr, "qssb_enable_policy() failed: %i\n", ret);
exit(EXIT_FAILURE);
}
return 0;
}
int test_default_main(int argc, char *argv[])
{
struct qssb_policy *policy = qssb_init_policy();
@ -15,10 +26,12 @@ int test_default_main(int argc, char *argv[])
int test_seccomp_blacklisted(int argc, char *argv[])
{
struct qssb_policy *policy = qssb_init_policy();
qssb_append_syscall_policy(policy, QSSB_SYSCALL_DENY_KILL_PROCESS, QSSB_SYS(getuid));
int ret = qssb_enable_policy(policy);
qssb_append_syscall_policy(policy, QSSB_SYSCALL_DENY_KILL_PROCESS, QSSB_SYS(getuid));
qssb_append_syscall_default_policy(policy, QSSB_SYSCALL_ALLOW);
xqssb_enable_policy(policy);
uid_t pid = geteuid();
pid = getuid();
return 0;
@ -41,14 +54,31 @@ int test_seccomp_x32_kill(int argc, char *argv[])
struct qssb_policy *policy = qssb_init_policy();
qssb_append_syscall_policy(policy, QSSB_SYSCALL_DENY_KILL_PROCESS, QSSB_SYS(getuid));
qssb_append_syscall_default_policy(policy, QSSB_SYSCALL_ALLOW);
int ret = qssb_enable_policy(policy);
if(ret != 0)
{
fprintf(stderr, "Error: Enabling is expected to succeed. Returning 0 to indicate failure of this test\n");
return 0;
}
/* Attempt to bypass by falling back to x32 should be blocked */
qssb_append_syscall_policy(policy, QSSB_SYSCALL_DENY_KILL_PROCESS, QSSB_SYS(getuid)+__X32_SYSCALL_BIT);
syscall(QSSB_SYS(getuid)+__X32_SYSCALL_BIT);
return 0;
}
/* Tests whether seccomp rules end with a policy matching all syscalls */
int test_seccomp_require_last_matchall(int argc, char *argv[])
{
struct qssb_policy *policy = qssb_init_policy();
qssb_append_syscall_policy(policy, QSSB_SYSCALL_DENY_KILL_PROCESS, QSSB_SYS(getuid));
return qssb_enable_policy(policy);
}
int test_landlock(int argc, char *argv[])
{
struct qssb_policy *policy = qssb_init_policy();
@ -146,6 +176,7 @@ struct dispatcher dispatchers[] = {
{ "seccomp-blacklisted", &test_seccomp_blacklisted, false },
{ "seccomp-blacklisted-permitted", &test_seccomp_blacklisted_call_permitted, true },
{ "seccomp-x32-kill", &test_seccomp_x32_kill, false},
{ "seccomp-require-last-matchall", &test_seccomp_require_last_matchall, false},
{ "landlock", &test_landlock, true },
{ "landlock-deny-write", &test_landlock_deny_write, true },
{ "no_fs", &test_nofs, false},