diff options
| author | Dmitry Chestnykh <dm.chestnykh@gmail.com> | 2024-02-25 14:43:28 +0300 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2024-02-25 19:27:48 +0100 |
| commit | 81ed334f67e0c56ff0a89ade0fc156c0ba23f190 (patch) | |
| tree | 09829cc5cd0d03a4f91887864f6a3c28213549af /libc/sysdeps/linux/common/select.c | |
| parent | 086a5f165096af104b01bb6d5639bd769bd17620 (diff) | |
Add support for using time64 on big-endian machines.
For BE architectures there is one significant difference
in comparison with time64 support for little-endian
architectures like ARMv7.
The difference is that we strictly need to pass two 64bit
values to system calls because Linux Kernel internally uses
`struct __kernel_timespec` and similar, which consists of two
64bit fields.
For this reason many files have been changed to convert
pointers to timespec-family structures (mixed of 64bit and 32bit values)
to the pointer of the similar but 64bit-only structures
for using as system calls args.
This is general prerequisite for any BE architecture.
Signed-off-by: Dmitry Chestnykh <dm.chestnykh@gmail.com>
Diffstat (limited to 'libc/sysdeps/linux/common/select.c')
| -rw-r--r-- | libc/sysdeps/linux/common/select.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/libc/sysdeps/linux/common/select.c b/libc/sysdeps/linux/common/select.c index 3132a109c..84016dd0b 100644 --- a/libc/sysdeps/linux/common/select.c +++ b/libc/sysdeps/linux/common/select.c @@ -15,17 +15,19 @@ # define __NR_select __NR__newselect #endif -#if !defined __NR_select && defined __NR_pselect6 +#if defined(__NR_pselect6) || defined(__NR_pselect6_time64) # include <stdint.h> # define USEC_PER_SEC 1000000L #endif +#if defined(__UCLIBC_USE_TIME64__) +#include "internal/time64_helpers.h" +#endif + int __NC(select)(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout) { -#ifdef __NR_select - return INLINE_SYSCALL(select, 5, n, readfds, writefds, exceptfds, timeout); -#elif defined __NR_pselect6 +#if defined(__NR_pselect6) || defined(__NR_pselect6_time64) struct timespec _ts, *ts = 0; if (timeout) { uint32_t usec; @@ -47,8 +49,14 @@ int __NC(select)(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, ts = &_ts; } +#if defined(__UCLIBC_USE_TIME64__) && defined(__NR_pselect6_time64) + return INLINE_SYSCALL(pselect6_time64, 6, n, readfds, writefds, exceptfds, TO_TS64_P(ts), 0); +#else return INLINE_SYSCALL(pselect6, 6, n, readfds, writefds, exceptfds, ts, 0); #endif +#elif defined(__NR_select) + return INLINE_SYSCALL(select, 5, n, readfds, writefds, exceptfds, ts); +#endif } /* we should guard it, but we need it in other files, so let it fail * if we miss any of the syscalls */ |