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Subject[PATCH 5/9] tools/nolibc: implement poll() based on ppoll()
Date
Some architectures like arm64 do not implement poll() and have to
use ppoll() instead.
[This is nolibc's upstream commit 800f75c13ede]

Signed-off-by: Willy Tarreau <w@1wt.eu>
---
tools/include/nolibc/nolibc.h | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index fdd5524e0e54..833693faf53c 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -1652,7 +1652,17 @@ int sys_pivot_root(const char *new, const char *old)
static __attribute__((unused))
int sys_poll(struct pollfd *fds, int nfds, int timeout)
{
+#if defined(__NR_ppoll)
+ struct timespec t;
+
+ if (timeout >= 0) {
+ t.tv_sec = timeout / 1000;
+ t.tv_nsec = (timeout % 1000) * 1000000;
+ }
+ return my_syscall4(__NR_ppoll, fds, nfds, (timeout >= 0) ? &t : NULL, NULL);
+#else
return my_syscall3(__NR_poll, fds, nfds, timeout);
+#endif
}

static __attribute__((unused))
--
2.28.0
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