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#include "config.h"
#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <cmocka.h>
#include <errno.h>
#include <sys/types.h>
#include <unistd.h>
#include <pwd.h>
#ifdef HAVE_SYS_SYSCALL_H
#include <sys/syscall.h>
#endif
#ifdef HAVE_SYSCALL_H
#include <syscall.h>
#endif
static void test_uwrap_syscall_setresuid32(void **state)
{
long int rc;
uid_t u;
#ifdef HAVE_GETRESUID
uid_t cp_ruid, cp_euid, cp_suid;
#endif
(void) state; /* unused */
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0);
assert_int_equal(cp_euid, 0);
assert_int_equal(cp_suid, 0);
#endif
u = geteuid();
assert_int_equal(u, 0);
rc = syscall(SYS_setresuid32, -1, -1, -1);
assert_return_code(rc, errno);
rc = syscall(SYS_setresuid32, 0x4444, 0x5555, -1);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x4444);
assert_int_equal(cp_euid, 0x5555);
assert_int_equal(cp_suid, 0);
#endif
u = getuid();
assert_int_equal(u, 0x4444);
u = geteuid();
assert_int_equal(u, 0x5555);
/* We can go back cause the suid is 0 */
rc = syscall(SYS_setresuid32, 0, -1, -1);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0);
assert_int_equal(cp_euid, 0x5555);
assert_int_equal(cp_suid, 0);
#endif
u = getuid();
assert_int_equal(u, 0);
rc = syscall(SYS_setresuid32, -1, 0, -1);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0);
assert_int_equal(cp_euid, 0);
assert_int_equal(cp_suid, 0);
#endif
u = geteuid();
assert_int_equal(u, 0);
rc = syscall(SYS_setresuid32, 0, 0x5555, 0x6666);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0);
assert_int_equal(cp_euid, 0x5555);
assert_int_equal(cp_suid, 0x6666);
#endif
/*
* The euid needs to be 0 in order to change to an
* unknown value (here 0x4444)
*/
rc = syscall(SYS_setresuid32, 0x5555, 0x6666, 0x4444);
assert_int_equal(rc, -1);
assert_int_equal(errno, EPERM);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0);
assert_int_equal(cp_euid, 0x5555);
assert_int_equal(cp_suid, 0x6666);
#endif
/* But we can rotate the values */
errno = 0;
rc = syscall(SYS_setresuid32, 0x5555, 0x6666, 0);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x5555);
assert_int_equal(cp_euid, 0x6666);
assert_int_equal(cp_suid, 0);
#endif
/*
* The euid needs to be 0 in order to change to an
* unknown value (here 0x4444)
*/
rc = syscall(SYS_setresuid32, 0x5555, 0x6666, 0x4444);
assert_int_equal(rc, -1);
assert_int_equal(errno, EPERM);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x5555);
assert_int_equal(cp_euid, 0x6666);
assert_int_equal(cp_suid, 0);
#endif
/* But we can rotate the values */
rc = syscall(SYS_setresuid32, 0x5555, 0, 0x6666);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x5555);
assert_int_equal(cp_euid, 0);
assert_int_equal(cp_suid, 0x6666);
#endif
/*
* With euid == 0 we can change to completely unrelated values.
*/
rc = syscall(SYS_setresuid32, 0x1111, 0x2222, 0x3333);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x1111);
assert_int_equal(cp_euid, 0x2222);
assert_int_equal(cp_suid, 0x3333);
#endif
rc = syscall(SYS_setresuid32, 0, -1, -1);
assert_int_equal(rc, -1);
assert_int_equal(errno, EPERM);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x1111);
assert_int_equal(cp_euid, 0x2222);
assert_int_equal(cp_suid, 0x3333);
#endif
rc = syscall(SYS_setresuid32, -1, 0, -1);
assert_int_equal(rc, -1);
assert_int_equal(errno, EPERM);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x1111);
assert_int_equal(cp_euid, 0x2222);
assert_int_equal(cp_suid, 0x3333);
#endif
rc = syscall(SYS_setresuid32, -1, -1, 0);
assert_int_equal(rc, -1);
assert_int_equal(errno, EPERM);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x1111);
assert_int_equal(cp_euid, 0x2222);
assert_int_equal(cp_suid, 0x3333);
#endif
/*
* We can still roate the values
*/
rc = syscall(SYS_setresuid32, 0x2222, 0x3333, 0x1111);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x2222);
assert_int_equal(cp_euid, 0x3333);
assert_int_equal(cp_suid, 0x1111);
#endif
/*
* We can still roate the values
*/
rc = syscall(SYS_setresuid32, 0x3333, 0x1111, 0x2222);
assert_return_code(rc, errno);
#ifdef HAVE_GETRESUID
cp_ruid = cp_euid = cp_suid = -1;
rc = getresuid(&cp_ruid, &cp_euid, &cp_suid);
assert_return_code(rc, errno);
assert_int_equal(cp_ruid, 0x3333);
assert_int_equal(cp_euid, 0x1111);
assert_int_equal(cp_suid, 0x2222);
#endif
}
int main(void) {
int rc;
const struct CMUnitTest uwrap_tests[] = {
cmocka_unit_test(test_uwrap_syscall_setresuid32),
};
rc = cmocka_run_group_tests(uwrap_tests, NULL, NULL);
return rc;
}
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