LibCore: Add a wrapper for `poll()`

2 files changed, 10 insertions, 0 deletions

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index c2bb6f135a..46b92231dd 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -1410,6 +1410,14 @@ ErrorOr<DeprecatedString> readlink(StringView pathname)
 #endif
 }
 
+ErrorOr<int> poll(Span<struct pollfd> poll_fds, int timeout)
+{
+    auto const rc = ::poll(poll_fds.data(), poll_fds.size(), timeout);
+    if (rc < 0)
+        return Error::from_syscall("poll"sv, -errno);
+    return { rc };
+}
+
 #ifdef AK_OS_SERENITY
 ErrorOr<void> posix_fallocate(int fd, off_t offset, off_t length)
 {
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index 78e22d3067..986d2d57c8 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -13,6 +13,7 @@
 #include <dirent.h>
 #include <fcntl.h>
 #include <grp.h>
+#include <poll.h>
 #include <pwd.h>
 #include <signal.h>
 #include <spawn.h>
@@ -205,6 +206,7 @@ ErrorOr<void> grantpt(int fildes);
 ErrorOr<void> unlockpt(int fildes);
 ErrorOr<void> access(StringView pathname, int mode);
 ErrorOr<DeprecatedString> readlink(StringView pathname);
+ErrorOr<int> poll(Span<struct pollfd>, int timeout);
 
 #ifdef AK_OS_SERENITY
 ErrorOr<void> posix_fallocate(int fd, off_t offset, off_t length);