LibCore: Add syscall wrapper for dup()

2 files changed, 9 insertions, 0 deletions

diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index 8e241749cc..b0198294fe 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -196,6 +196,14 @@ ErrorOr<void> kill(pid_t pid, int signal)
     return {};
 }
 
+ErrorOr<int> dup(int source_fd)
+{
+    int fd = ::dup(source_fd);
+    if (fd < 0)
+        return Error::from_syscall("dup"sv, -errno);
+    return fd;
+}
+
 ErrorOr<int> dup2(int source_fd, int destination_fd)
 {
     int fd = ::dup2(source_fd, destination_fd);
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index 2f4d61ea42..121867701c 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -32,6 +32,7 @@ ErrorOr<struct stat> stat(StringView path);
 ErrorOr<ssize_t> read(int fd, Bytes buffer);
 ErrorOr<ssize_t> write(int fd, ReadonlyBytes buffer);
 ErrorOr<void> kill(pid_t, int signal);
+ErrorOr<int> dup(int source_fd);
 ErrorOr<int> dup2(int source_fd, int destination_fd);
 ErrorOr<String> ptsname(int fd);
 ErrorOr<String> gethostname();