diff options
Diffstat (limited to 'sysdeps/unix')
| -rw-r--r-- | sysdeps/unix/sysv/linux/sigtimedwait.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sigtimedwait.c b/sysdeps/unix/sysv/linux/sigtimedwait.c index b4de8856dd..6cfe8f082e 100644 --- a/sysdeps/unix/sysv/linux/sigtimedwait.c +++ b/sysdeps/unix/sysv/linux/sigtimedwait.c @@ -18,7 +18,11 @@ #include <errno.h> #include <signal.h> #include <string.h> +//#include <stdint.h> + +//#include <nptl/pthreadP.h> #include <sysdep-cancel.h> +#include <y2038-support.h> int __sigtimedwait (const sigset_t *set, siginfo_t *info, @@ -39,3 +43,80 @@ __sigtimedwait (const sigset_t *set, siginfo_t *info, } libc_hidden_def (__sigtimedwait) weak_alias (__sigtimedwait, sigtimedwait) + +/* 64-bit time version */ + +int +__sigtimedwait_time64 (const sigset_t *set, siginfo_t *info, + const struct __timespec64 *timeout) +{ + int result; + struct timespec ts32; +#ifdef __NR_rt_sigtimedwait_time64 + struct __timespec64 ts64; +#endif + +#ifdef SIGCANCEL + sigset_t tmpset; + if (set != NULL + && (__builtin_expect (__sigismember (set, SIGCANCEL), 0) +# ifdef SIGSETXID + || __builtin_expect (__sigismember (set, SIGSETXID), 0) +# endif + )) + { + /* Create a temporary mask without the bit for SIGCANCEL set. */ + // We are not copying more than we have to. + memcpy (&tmpset, set, _NSIG / 8); + __sigdelset (&tmpset, SIGCANCEL); +# ifdef SIGSETXID + __sigdelset (&tmpset, SIGSETXID); +# endif + set = &tmpset; + } +#endif + + /* XXX The size argument hopefully will have to be changed to the + real size of the user-level sigset_t. */ +#ifdef __NR_rt_sigtimedwait_time64 + if (__y2038_linux_support > 0) + { + if (timeout) + { + ts64.tv_sec = timeout->tv_sec; + ts64.tv_nsec = timeout->tv_nsec; + ts64.tv_pad = 0; + result = SYSCALL_CANCEL (rt_sigtimedwait_time64, set, info, &ts64, _NSIG / 8); + if (result == -1 && errno==ENOSYS) + { + __y2038_linux_support = -1; + } + } + else + result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, NULL, _NSIG / 8); + } + else +#endif + { + if (timeout) + { + if (! timespec64_to_timespec(timeout, &ts32)) + { + errno = EOVERFLOW; + return -1; + } + result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, &ts32, _NSIG / 8); + } + else + result = SYSCALL_CANCEL (rt_sigtimedwait, set, info, NULL, _NSIG / 8); + } + + /* The kernel generates a SI_TKILL code in si_code in case tkill is + used. tkill is transparently used in raise(). Since having + SI_TKILL as a code is useful in general we fold the results + here. */ + if (result != -1 && info != NULL && info->si_code == SI_TKILL) + info->si_code = SI_USER; + + return result; +} |