mirror of
https://github.com/wolfcw/libfaketime.git
synced 2026-05-17 00:26:16 +03:00
e21bf3017a
Replace struct timespec (arch-dependent long/time_t) with fixed-width int64_t pairs in ft_shared_s so that 32-bit and 64-bit processes interpret the same shared memory layout identically. Fix ftruncate calls that allocated sizeof(uint64_t) (8 bytes) instead of sizeof(struct ft_shared_s) (64-80 bytes) for the shared memory region. Fix munmap in ft_cleanup using the wrong size. Add struct layout test and cross-process shared memory functional test.
66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
#include <time.h>
|
|
|
|
#include "../src/faketime_common.h"
|
|
|
|
static int failures = 0;
|
|
|
|
static void check_offset(const char *field, size_t actual, size_t expected)
|
|
{
|
|
if (actual != expected)
|
|
{
|
|
fprintf(stderr, "FAIL: offsetof(ft_shared_s, %s) = %zu, expected %zu\n",
|
|
field, actual, expected);
|
|
failures++;
|
|
}
|
|
else
|
|
{
|
|
printf("OK: offsetof(ft_shared_s, %s) = %zu\n", field, actual);
|
|
}
|
|
}
|
|
|
|
static void check_size(const char *name, size_t actual, size_t expected)
|
|
{
|
|
if (actual != expected)
|
|
{
|
|
fprintf(stderr, "FAIL: sizeof(%s) = %zu, expected %zu\n",
|
|
name, actual, expected);
|
|
failures++;
|
|
}
|
|
else
|
|
{
|
|
printf("OK: sizeof(%s) = %zu\n", name, actual);
|
|
}
|
|
}
|
|
|
|
int main()
|
|
{
|
|
/* ft_shared_time_s must be exactly 16 bytes: two int64_t */
|
|
check_size("ft_shared_time_s", sizeof(struct ft_shared_time_s), 16);
|
|
|
|
/* Field offsets in ft_shared_s */
|
|
check_offset("ticks", offsetof(struct ft_shared_s, ticks), 0);
|
|
check_offset("file_idx", offsetof(struct ft_shared_s, file_idx), 8);
|
|
check_offset("start_time_real", offsetof(struct ft_shared_s, start_time_real), 16);
|
|
check_offset("start_time_mon", offsetof(struct ft_shared_s, start_time_mon), 32);
|
|
check_offset("start_time_mon_raw", offsetof(struct ft_shared_s, start_time_mon_raw), 48);
|
|
#ifdef CLOCK_BOOTTIME
|
|
check_offset("start_time_boot", offsetof(struct ft_shared_s, start_time_boot), 64);
|
|
check_size("ft_shared_s", sizeof(struct ft_shared_s), 80);
|
|
#else
|
|
check_size("ft_shared_s", sizeof(struct ft_shared_s), 64);
|
|
#endif
|
|
|
|
if (failures > 0)
|
|
{
|
|
fprintf(stderr, "%d layout check(s) failed\n", failures);
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("All layout checks passed\n");
|
|
return EXIT_SUCCESS;
|
|
}
|