int main(int argc, char *argv[]) {
char buf[CONST_MAX(FORMAT_TIMESPAN_MAX, FORMAT_BYTES_MAX)];
nsec_t nsec;
uint64_t v;
int r;
log_parse_environment();
log_open();
assert_se(procfs_cpu_get_usage(&nsec) >= 0);
log_info("Current system CPU time: %s", format_timespan(buf, sizeof(buf), nsec/NSEC_PER_USEC, 1));
assert_se(procfs_memory_get_current(&v) >= 0);
log_info("Current memory usage: %s", format_bytes(buf, sizeof(buf), v));
assert_se(procfs_tasks_get_current(&v) >= 0);
log_info("Current number of tasks: %" PRIu64, v);
assert_se(procfs_tasks_get_limit(&v) >= 0);
log_info("Limit of tasks: %" PRIu64, v);
assert_se(v > 0);
assert_se(procfs_tasks_set_limit(v) >= 0);
if (v > 100) {
uint64_t w;
r = procfs_tasks_set_limit(v-1);
assert_se(IN_SET(r, 0, -EPERM, -EACCES, -EROFS));
assert_se(procfs_tasks_get_limit(&w) >= 0);
assert_se((r == 0 && w == v - 1) || (r < 0 && w == v));
assert_se(procfs_tasks_set_limit(v) >= 0);
assert_se(procfs_tasks_get_limit(&w) >= 0);
assert_se(v == w);
}
return 0;
}
static void test_max(void) {
static const struct {
int a;
int b[CONST_MAX(10, 100)];
} val1 = {
.a = CONST_MAX(10, 100),
};
int d = 0;
unsigned long x = 12345;
unsigned long y = 54321;
const char str[] = "a_string_constant";
const unsigned long long arr[] = {9999ULL, 10ULL, 0ULL, 3000ULL, 2000ULL, 1000ULL, 100ULL, 9999999ULL};
void *p = (void *)str;
void *q = (void *)&str[16];
log_info("/* %s */", __func__);
assert_cc(sizeof(val1.b) == sizeof(int) * 100);
/* CONST_MAX returns (void) instead of a value if the passed arguments
* are not of the same type or not constant expressions. */
assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 10)), int));
assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 1U)), void));
assert_se(val1.a == 100);
assert_se(MAX(++d, 0) == 1);
assert_se(d == 1);
assert_cc(MAXSIZE(char[3], uint16_t) == 3);
assert_cc(MAXSIZE(char[3], uint32_t) == 4);
assert_cc(MAXSIZE(char, long) == sizeof(long));
assert_se(MAX(-5, 5) == 5);
assert_se(MAX(5, 5) == 5);
assert_se(MAX(MAX(1, MAX(2, MAX(3, 4))), 5) == 5);
assert_se(MAX(MAX(1, MAX(2, MAX(3, 2))), 1) == 3);
assert_se(MAX(MIN(1, MIN(2, MIN(3, 4))), 5) == 5);
assert_se(MAX(MAX(1, MIN(2, MIN(3, 2))), 1) == 2);
assert_se(LESS_BY(8, 4) == 4);
assert_se(LESS_BY(8, 8) == 0);
assert_se(LESS_BY(4, 8) == 0);
assert_se(LESS_BY(16, LESS_BY(8, 4)) == 12);
assert_se(LESS_BY(4, LESS_BY(8, 4)) == 0);
assert_se(CMP(3, 5) == -1);
assert_se(CMP(5, 3) == 1);
assert_se(CMP(5, 5) == 0);
assert_se(CMP(x, y) == -1);
assert_se(CMP(y, x) == 1);
assert_se(CMP(x, x) == 0);
assert_se(CMP(y, y) == 0);
assert_se(CMP(UINT64_MAX, (uint64_t) 0) == 1);
assert_se(CMP((uint64_t) 0, UINT64_MAX) == -1);
assert_se(CMP(UINT64_MAX, UINT64_MAX) == 0);
assert_se(CMP(INT64_MIN, INT64_MAX) == -1);
assert_se(CMP(INT64_MAX, INT64_MIN) == 1);
assert_se(CMP(INT64_MAX, INT64_MAX) == 0);
assert_se(CMP(INT64_MIN, INT64_MIN) == 0);
assert_se(CMP(INT64_MAX, (int64_t) 0) == 1);
assert_se(CMP((int64_t) 0, INT64_MIN) == 1);
assert_se(CMP(INT64_MIN, (int64_t) 0) == -1);
assert_se(CMP((int64_t) 0, INT64_MAX) == -1);
assert_se(CMP(&str[2], &str[7]) == -1);
assert_se(CMP(&str[2], &str[2]) == 0);
assert_se(CMP(&str[7], (const char *)str) == 1);
assert_se(CMP(str[2], str[7]) == 1);
assert_se(CMP(str[7], *str) == 1);
assert_se(CMP((const unsigned long long *)arr, &arr[3]) == -1);
assert_se(CMP(*arr, arr[3]) == 1);
assert_se(CMP(p, q) == -1);
assert_se(CMP(q, p) == 1);
assert_se(CMP(p, p) == 0);
assert_se(CMP(q, q) == 0);
assert_se(CLAMP(-5, 0, 1) == 0);
assert_se(CLAMP(5, 0, 1) == 1);
assert_se(CLAMP(5, -10, 1) == 1);
assert_se(CLAMP(5, -10, 10) == 5);
assert_se(CLAMP(CLAMP(0, -10, 10), CLAMP(-5, 10, 20), CLAMP(100, -5, 20)) == 10);
}
#pragma GCC diagnostic push
#ifdef __clang__
# pragma GCC diagnostic ignored "-Waddress-of-packed-member"
#endif
static void test_container_of(void) {
struct mytype {
uint8_t pad1[3];
uint64_t v1;
uint8_t pad2[2];
uint32_t v2;
} myval = { };
log_info("/* %s */", __func__);
assert_cc(sizeof(myval) >= 17);
assert_se(container_of(&myval.v1, struct mytype, v1) == &myval);
assert_se(container_of(&myval.v2, struct mytype, v2) == &myval);
assert_se(container_of(&container_of(&myval.v2,
struct mytype,
v2)->v1,
struct mytype,
v1) == &myval);
}
[IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
[IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
[IFLA_CARRIER] = { .type = NLA_U8 },
/*
[IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN },
*/
};
static const NLTypeSystem rtnl_link_type_system = {
.max = ELEMENTSOF(rtnl_link_types) - 1,
.types = rtnl_link_types,
};
/* IFA_FLAGS was defined in kernel 3.14, but we still support older
* kernels where IFA_MAX is lower. */
static const NLType rtnl_address_types[CONST_MAX(IFA_MAX, IFA_FLAGS) + 1] = {
[IFA_ADDRESS] = { .type = NLA_IN_ADDR },
[IFA_LOCAL] = { .type = NLA_IN_ADDR },
[IFA_LABEL] = { .type = NLA_STRING, .size = IFNAMSIZ - 1 },
[IFA_BROADCAST] = { .type = NLA_IN_ADDR }, /* 6? */
[IFA_CACHEINFO] = { .type = NLA_CACHE_INFO, .size = sizeof(struct ifa_cacheinfo) },
/*
[IFA_ANYCAST],
[IFA_MULTICAST],
*/
[IFA_FLAGS] = { .type = NLA_U32 },
};
static const NLTypeSystem rtnl_address_type_system = {
.max = ELEMENTSOF(rtnl_address_types) - 1,
.types = rtnl_address_types,
static void test_max(void) {
static const struct {
int a;
int b[CONST_MAX(10, 100)];
} val1 = {
.a = CONST_MAX(10, 100),
};
int d = 0;
assert_cc(sizeof(val1.b) == sizeof(int) * 100);
/* CONST_MAX returns (void) instead of a value if the passed arguments
* are not of the same type or not constant expressions. */
assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 10)), int));
assert_cc(__builtin_types_compatible_p(typeof(CONST_MAX(1, 1U)), void));
assert_se(val1.a == 100);
assert_se(MAX(++d, 0) == 1);
assert_se(d == 1);
assert_cc(MAXSIZE(char[3], uint16_t) == 3);
assert_cc(MAXSIZE(char[3], uint32_t) == 4);
assert_cc(MAXSIZE(char, long) == sizeof(long));
assert_se(MAX(-5, 5) == 5);
assert_se(MAX(5, 5) == 5);
assert_se(MAX(MAX(1, MAX(2, MAX(3, 4))), 5) == 5);
assert_se(MAX(MAX(1, MAX(2, MAX(3, 2))), 1) == 3);
assert_se(MAX(MIN(1, MIN(2, MIN(3, 4))), 5) == 5);
assert_se(MAX(MAX(1, MIN(2, MIN(3, 2))), 1) == 2);
assert_se(LESS_BY(8, 4) == 4);
assert_se(LESS_BY(8, 8) == 0);
assert_se(LESS_BY(4, 8) == 0);
assert_se(LESS_BY(16, LESS_BY(8, 4)) == 12);
assert_se(LESS_BY(4, LESS_BY(8, 4)) == 0);
assert_se(CLAMP(-5, 0, 1) == 0);
assert_se(CLAMP(5, 0, 1) == 1);
assert_se(CLAMP(5, -10, 1) == 1);
assert_se(CLAMP(5, -10, 10) == 5);
assert_se(CLAMP(CLAMP(0, -10, 10), CLAMP(-5, 10, 20), CLAMP(100, -5, 20)) == 10);
}
#pragma GCC diagnostic push
#ifdef __clang__
# pragma GCC diagnostic ignored "-Waddress-of-packed-member"
#endif
static void test_container_of(void) {
struct mytype {
uint8_t pad1[3];
uint64_t v1;
uint8_t pad2[2];
uint32_t v2;
} _packed_ myval = { };
assert_cc(sizeof(myval) == 17);
assert_se(container_of(&myval.v1, struct mytype, v1) == &myval);
assert_se(container_of(&myval.v2, struct mytype, v2) == &myval);
assert_se(container_of(&container_of(&myval.v2,
struct mytype,
v2)->v1,
struct mytype,
v1) == &myval);
}
