Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
tools/nolibc: add support for clock_nanosleep() and nanosleep()
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>
authored by
Thomas Weißschuh
and committed by
Thomas Weißschuh
7c02bc40
1536aa0f
+35
+34
tools/include/nolibc/time.h
+34
tools/include/nolibc/time.h
···
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* int clock_getres(clockid_t clockid, struct timespec *res);
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* int clock_gettime(clockid_t clockid, struct timespec *tp);
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* int clock_settime(clockid_t clockid, const struct timespec *tp);
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* int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
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* struct timespec *rmtp)
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*/
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static __attribute__((unused))
···
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return __sysret(sys_clock_settime(clockid, tp));
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}
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static __attribute__((unused))
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int sys_clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
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struct timespec *rmtp)
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{
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#if defined(__NR_clock_nanosleep)
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return my_syscall4(__NR_clock_nanosleep, clockid, flags, rqtp, rmtp);
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#elif defined(__NR_clock_nanosleep_time64)
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struct __kernel_timespec krqtp, krmtp;
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int ret;
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__nolibc_timespec_user_to_kernel(rqtp, &krqtp);
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ret = my_syscall4(__NR_clock_nanosleep_time64, clockid, flags, &krqtp, &krmtp);
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if (rmtp)
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__nolibc_timespec_kernel_to_user(&krmtp, rmtp);
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return ret;
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#else
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return __nolibc_enosys(__func__, clockid, flags, rqtp, rmtp);
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#endif
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}
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static __attribute__((unused))
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int clock_nanosleep(clockid_t clockid, int flags, const struct timespec *rqtp,
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struct timespec *rmtp)
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{
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return __sysret(sys_clock_nanosleep(clockid, flags, rqtp, rmtp));
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}
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static __inline__
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double difftime(time_t time1, time_t time2)
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{
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return time1 - time2;
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}
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static __inline__
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int nanosleep(const struct timespec *rqtp, struct timespec *rmtp)
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{
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return clock_nanosleep(CLOCK_REALTIME, 0, rqtp, rmtp);
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}
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+1
tools/testing/selftests/nolibc/nolibc-test.c
+1
tools/testing/selftests/nolibc/nolibc-test.c
···
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CASE_TEST(mmap_bad); EXPECT_PTRER(1, mmap(NULL, 0, PROT_READ, MAP_PRIVATE, 0, 0), MAP_FAILED, EINVAL); break;
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CASE_TEST(munmap_bad); EXPECT_SYSER(1, munmap(NULL, 0), -1, EINVAL); break;
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CASE_TEST(mmap_munmap_good); EXPECT_SYSZR(1, test_mmap_munmap()); break;
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CASE_TEST(nanosleep); ts.tv_nsec = -1; EXPECT_SYSER(1, nanosleep(&ts, NULL), -1, EINVAL); break;
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CASE_TEST(open_tty); EXPECT_SYSNE(1, tmp = open("/dev/null", O_RDONLY), -1); if (tmp != -1) close(tmp); break;
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CASE_TEST(open_blah); EXPECT_SYSER(1, tmp = open("/proc/self/blah", O_RDONLY), -1, ENOENT); if (tmp != -1) close(tmp); break;
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CASE_TEST(openat_dir); EXPECT_SYSZR(1, test_openat()); break;