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tools/nolibc: add support for clock_nanosleep() and nanosleep()

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Also add some tests.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250704-nolibc-nanosleep-v1-1-d79c19701952@linutronix.de
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
This commit is contained in:
Thomas Weißschuh
2025-07-04 16:19:48 +02:00
committed by Thomas Weißschuh
parent 1536aa0fb1
commit 7c02bc4088
2 changed files with 35 additions and 0 deletions
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34
tools/include/nolibc/time.h
View File

@@ -36,6 +36,8 @@ void __nolibc_timespec_kernel_to_user(const struct __kernel_timespec *kts, struc
* int clock_getres(clockid_t clockid, struct timespec *res);
* int clock_gettime(clockid_t clockid, struct timespec *tp);
* int clock_settime(clockid_t clockid, const struct timespec *tp);
* int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
* struct timespec *rmtp)
*/
static __attribute__((unused))
@@ -107,6 +109,32 @@ int clock_settime(clockid_t clockid, struct timespec *tp)
return __sysret(sys_clock_settime(clockid, tp));
}
static __attribute__((unused))
int sys_clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
struct timespec *rmtp)
{
#if defined(__NR_clock_nanosleep)
return my_syscall4(__NR_clock_nanosleep, clockid, flags, rqtp, rmtp);
#elif defined(__NR_clock_nanosleep_time64)
struct __kernel_timespec krqtp, krmtp;
int ret;
__nolibc_timespec_user_to_kernel(rqtp, &krqtp);
ret = my_syscall4(__NR_clock_nanosleep_time64, clockid, flags, &krqtp, &krmtp);
if (rmtp)
__nolibc_timespec_kernel_to_user(&krmtp, rmtp);
return ret;
#else
return __nolibc_enosys(__func__, clockid, flags, rqtp, rmtp);
#endif
}
static __attribute__((unused))
int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
struct timespec *rmtp)
{
return __sysret(sys_clock_nanosleep(clockid, flags, rqtp, rmtp));
}
static __inline__
double difftime(time_t time1, time_t time2)
@@ -114,6 +142,12 @@ double difftime(time_t time1, time_t time2)
return time1 - time2;
}
static __inline__
int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
{
return clock_nanosleep(CLOCK_REALTIME, 0, rqtp, rmtp);
}
static __attribute__((unused))
time_t time(time_t *tptr)

1
tools/testing/selftests/nolibc/nolibc-test.c
View File

@@ -1363,6 +1363,7 @@ int run_syscall(int min, int max)
CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
CASE_TEST(nanosleep); ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break;
CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break;
CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break;
CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break;