lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 31 insertions, 0 deletions

diff --git a/lib/mlibc/options/posix/generic/poll.cpp b/lib/mlibc/options/posix/generic/poll.cpp
new file mode 100644
index 0000000..c34e25e
--- /dev/null
+++ b/lib/mlibc/options/posix/generic/poll.cpp
@@ -0,0 +1,31 @@
+
+#include <errno.h>
+#include <poll.h>
+
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+#include <mlibc/posix-sysdeps.hpp>
+
+int poll(struct pollfd *fds, nfds_t count, int timeout) {
+	int num_events;
+	MLIBC_CHECK_OR_ENOSYS(mlibc::sys_poll, -1);
+	if(int e = mlibc::sys_poll(fds, count, timeout, &num_events); e) {
+		errno = e;
+		return -1;
+	}
+	return num_events;
+}
+
+#if __MLIBC_LINUX_OPTION
+int ppoll(struct pollfd *fds, nfds_t nfds, const struct timespec *timeout_ts, const sigset_t *sigmask) {
+	sigset_t origmask;
+	int timeout = (timeout_ts == NULL) ? -1 : (timeout_ts->tv_sec * 1000 + timeout_ts->tv_nsec / 1000000);
+
+	sigprocmask(SIG_SETMASK, sigmask, &origmask);
+	int ready = poll(fds, nfds, timeout);
+	sigprocmask(SIG_SETMASK, &origmask, NULL);
+
+	return ready;
+}
+#endif // __MLIBC_LINUX_OPTION
+