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y2038: Add support for 64-bit time on legacy ABIs

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A new build flag, _TIME_BITS, enables the usage of the newer 64-bit
time symbols for legacy ABI (where 32-bit time_t is default).  The 64
bit time support is only enabled if LFS (_FILE_OFFSET_BITS=64) is
also used.

Different than LFS support, the y2038 symbols are added only for the
required ABIs (armhf, csky, hppa, i386, m68k, microblaze, mips32,
mips64-n32, nios2, powerpc32, sparc32, s390-32, and sh).  The ABIs with
64-bit time support are unchanged, both for symbol and types
redirection.

On Linux the full 64-bit time support requires a minimum of kernel
version v5.1.  Otherwise, the 32-bit fallbacks are used and might
results in error with overflow return code (EOVERFLOW).

The i686-gnu does not yet support 64-bit time.

This patch exports following rediretions to support 64-bit time:

  * libc:
    adjtime
    adjtimex
    clock_adjtime
    clock_getres
    clock_gettime
    clock_nanosleep
    clock_settime
    cnd_timedwait
    ctime
    ctime_r
    difftime
    fstat
    fstatat
    futimens
    futimes
    futimesat
    getitimer
    getrusage
    gettimeofday
    gmtime
    gmtime_r
    localtime
    localtime_r
    lstat_time
    lutimes
    mktime
    msgctl
    mtx_timedlock
    nanosleep
    nanosleep
    ntp_gettime
    ntp_gettimex
    ppoll
    pselec
    pselect
    pthread_clockjoin_np
    pthread_cond_clockwait
    pthread_cond_timedwait
    pthread_mutex_clocklock
    pthread_mutex_timedlock
    pthread_rwlock_clockrdlock
    pthread_rwlock_clockwrlock
    pthread_rwlock_timedrdlock
    pthread_rwlock_timedwrlock
    pthread_timedjoin_np
    recvmmsg
    sched_rr_get_interval
    select
    sem_clockwait
    semctl
    semtimedop
    sem_timedwait
    setitimer
    settimeofday
    shmctl
    sigtimedwait
    stat
    thrd_sleep
    time
    timegm
    timerfd_gettime
    timerfd_settime
    timespec_get
    utime
    utimensat
    utimes
    utimes
    wait3
    wait4

  * librt:
    aio_suspend
    mq_timedreceive
    mq_timedsend
    timer_gettime
    timer_settime

  * libanl:
    gai_suspend

Reviewed-by: Lukasz Majewski <lukma@denx.de>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Tested-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Adhemerval Zanella
2021-02-17 13:35:19 -03:00
parent 8af344feb5
commit 47f24c21ee
118 changed files with 2387 additions and 61 deletions
Download Patch File Download Diff File Expand all files Collapse all files

119
sysdeps/nptl/pthread.h
View File

@@ -221,6 +221,7 @@ extern int pthread_join (pthread_t __th, void **__thread_return);
the thread in *THREAD_RETURN, if THREAD_RETURN is not NULL. */
extern int pthread_tryjoin_np (pthread_t __th, void **__thread_return) __THROW;
# ifndef __USE_TIME_BITS64
/* Make calling thread wait for termination of the thread TH, but only
until TIMEOUT. The exit status of the thread is stored in
*THREAD_RETURN, if THREAD_RETURN is not NULL.
@@ -240,6 +241,23 @@ extern int pthread_timedjoin_np (pthread_t __th, void **__thread_return,
extern int pthread_clockjoin_np (pthread_t __th, void **__thread_return,
clockid_t __clockid,
const struct timespec *__abstime);
# else
# ifdef __REDIRECT
extern int __REDIRECT (pthread_timedjoin_np,
(pthread_t __th, void **__thread_return,
const struct timespec *__abstime),
__pthread_timedjoin_np64);
extern int __REDIRECT (pthread_clockjoin_np,
(pthread_t __th, void **__thread_return,
clockid_t __clockid,
const struct timespec *__abstime),
__pthread_clockjoin_np64);
# else
# define pthread_timedjoin_np __pthread_timedjoin_np64
# define pthread_clockjoin_np __pthread_clockjoin_np64
# endif
# endif
#endif
/* Indicate that the thread TH is never to be joined with PTHREAD_JOIN.
@@ -776,16 +794,39 @@ extern int pthread_mutex_lock (pthread_mutex_t *__mutex)
#ifdef __USE_XOPEN2K
/* Wait until lock becomes available, or specified time passes. */
# ifndef __USE_TIME_BITS64
extern int pthread_mutex_timedlock (pthread_mutex_t *__restrict __mutex,
const struct timespec *__restrict
__abstime) __THROWNL __nonnull ((1, 2));
# else
# ifdef __REDIRECT_NTHNL
extern int __REDIRECT_NTHNL (pthread_mutex_timedlock,
(pthread_mutex_t *__restrict __mutex,
const struct timespec *__restrict __abstime),
__pthread_mutex_timedlock64) __nonnull ((1, 2));
# else
# define pthread_mutex_timedlock __pthread_mutex_timedlock64
# endif
# endif
#endif
#ifdef __USE_GNU
# ifndef __USE_TIME_BITS64
extern int pthread_mutex_clocklock (pthread_mutex_t *__restrict __mutex,
clockid_t __clockid,
const struct timespec *__restrict
__abstime) __THROWNL __nonnull ((1, 3));
# else
# ifdef __REDIRECT_NTHNL
extern int __REDIRECT_NTHNL (pthread_mutex_clocklock,
(pthread_mutex_t *__restrict __mutex,
clockid_t __clockid,
const struct timespec *__restrict __abstime),
__pthread_mutex_clocklock64) __nonnull ((1, 3));
# else
# define pthread_mutex_clocklock __pthread_mutex_clocklock64
# endif
# endif
#endif
/* Unlock a mutex. */
@@ -939,16 +980,41 @@ extern int pthread_rwlock_tryrdlock (pthread_rwlock_t *__rwlock)
# ifdef __USE_XOPEN2K
/* Try to acquire read lock for RWLOCK or return after specfied time. */
# ifndef __USE_TIME_BITS64
extern int pthread_rwlock_timedrdlock (pthread_rwlock_t *__restrict __rwlock,
const struct timespec *__restrict
__abstime) __THROWNL __nonnull ((1, 2));
# else
# ifdef __REDIRECT_NTHNL
extern int __REDIRECT_NTHNL (pthread_rwlock_timedrdlock,
(pthread_rwlock_t *__restrict __rwlock,
const struct timespec *__restrict __abstime),
__pthread_rwlock_timedrdlock64)
__nonnull ((1, 2));
# else
# define pthread_rwlock_timedrdlock __pthread_rwlock_timedrdlock64
# endif
# endif
# endif
# ifdef __USE_GNU
# ifndef __USE_TIME_BITS64
extern int pthread_rwlock_clockrdlock (pthread_rwlock_t *__restrict __rwlock,
clockid_t __clockid,
const struct timespec *__restrict
__abstime) __THROWNL __nonnull ((1, 3));
# else
# ifdef __REDIRECT_NTHNL
extern int __REDIRECT_NTHNL (pthread_rwlock_clockrdlock,
(pthread_rwlock_t *__restrict __rwlock,
clockid_t __clockid,
const struct timespec *__restrict __abstime),
__pthread_rwlock_clockrdlock64)
__nonnull ((1, 3));
# else
# define pthread_rwlock_clockrdlock __pthread_rwlock_clockrdlock64
# endif
# endif
# endif
/* Acquire write lock for RWLOCK. */
@@ -961,16 +1027,42 @@ extern int pthread_rwlock_trywrlock (pthread_rwlock_t *__rwlock)
# ifdef __USE_XOPEN2K
/* Try to acquire write lock for RWLOCK or return after specfied time. */
# ifndef __USE_TIME_BITS64
extern int pthread_rwlock_timedwrlock (pthread_rwlock_t *__restrict __rwlock,
const struct timespec *__restrict
__abstime) __THROWNL __nonnull ((1, 2));
# else
# ifdef __REDIRECT_NTHNL
extern int __REDIRECT_NTHNL (pthread_rwlock_timedwrlock,
(pthread_rwlock_t *__restrict __rwlock,
const struct timespec *__restrict __abstime),
__pthread_rwlock_timedwrlock64)
__nonnull ((1, 2));
# else
# define pthread_rwlock_timedwrlock __pthread_rwlock_timedwrlock64
# endif
# endif
# endif
# ifdef __USE_GNU
# ifndef __USE_TIME_BITS64
extern int pthread_rwlock_clockwrlock (pthread_rwlock_t *__restrict __rwlock,
clockid_t __clockid,
const struct timespec *__restrict
__abstime) __THROWNL __nonnull ((1, 3));
# else
# ifdef __REDIRECT_NTHNL
extern int __REDIRECT_NTHNL (pthread_rwlock_clockwrlock,
(pthread_rwlock_t *__restrict __rwlock,
clockid_t __clockid,
const struct timespec *__restrict __abstime),
__pthread_rwlock_clockwrlock64)
__nonnull ((1, 3));
# else
# define pthread_rwlock_clockwrlock __pthread_rwlock_clockwrlock64
# endif
# endif
# endif
/* Unlock RWLOCK. */
@@ -1047,10 +1139,23 @@ extern int pthread_cond_wait (pthread_cond_t *__restrict __cond,
This function is a cancellation point and therefore not marked with
__THROW. */
# ifndef __USE_TIME_BITS64
extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
pthread_mutex_t *__restrict __mutex,
const struct timespec *__restrict __abstime)
__nonnull ((1, 2, 3));
# else
# ifdef __REDIRECT
extern int __REDIRECT (pthread_cond_timedwait,
(pthread_cond_t *__restrict __cond,
pthread_mutex_t *__restrict __mutex,
const struct timespec *__restrict __abstime),
__pthread_cond_timedwait64)
__nonnull ((1, 2, 3));
# else
# define pthread_cond_timedwait __pthread_cond_timedwait64
# endif
# endif
# ifdef __USE_GNU
/* Wait for condition variable COND to be signaled or broadcast until
@@ -1060,11 +1165,25 @@ extern int pthread_cond_timedwait (pthread_cond_t *__restrict __cond,
This function is a cancellation point and therefore not marked with
__THROW. */
# ifndef __USE_TIME_BITS64
extern int pthread_cond_clockwait (pthread_cond_t *__restrict __cond,
pthread_mutex_t *__restrict __mutex,
__clockid_t __clock_id,
const struct timespec *__restrict __abstime)
__nonnull ((1, 2, 4));
# else
# ifdef __REDIRECT
extern int __REDIRECT (pthread_cond_clockwait,
(pthread_cond_t *__restrict __cond,
pthread_mutex_t *__restrict __mutex,
__clockid_t __clock_id,
const struct timespec *__restrict __abstime),
__pthread_cond_clockwait64)
__nonnull ((1, 2, 4));
# else
# define pthread_cond_clockwait __pthread_cond_clockwait64
# endif
# endif
# endif
/* Functions for handling condition variable attributes. */