diff options
Diffstat (limited to 'src/linux/ppoll.c')
| -rw-r--r-- | src/linux/ppoll.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/linux/ppoll.c b/src/linux/ppoll.c index 9e262477..e614600a 100644 --- a/src/linux/ppoll.c +++ b/src/linux/ppoll.c @@ -1,10 +1,26 @@ #define _GNU_SOURCE #include <poll.h> #include <signal.h> +#include <errno.h> #include "syscall.h" +#define IS32BIT(x) !((x)+0x80000000ULL>>32) +#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63)) + int ppoll(struct pollfd *fds, nfds_t n, const struct timespec *to, const sigset_t *mask) { + time_t s = to ? to->tv_sec : 0; + long ns = to ? to->tv_nsec : 0; +#ifdef SYS_ppoll_time64 + int r = -ENOSYS; + if (SYS_ppoll == SYS_ppoll_time64 || !IS32BIT(s)) + r = __syscall_cp(SYS_ppoll_time64, fds, n, + to ? ((long long[]){s, ns}) : 0, + mask, _NSIG/8); + if (SYS_ppoll == SYS_ppoll_time64 || r != -ENOSYS) + return __syscall_ret(r); + s = CLAMP(s); +#endif return syscall_cp(SYS_ppoll, fds, n, - to ? (struct timespec []){*to} : 0, mask, _NSIG/8); + to ? ((long[]){s, ns}) : 0, mask, _NSIG/8); } |