From 21947380d96bd3d69cda964ce1b816b50914bd14 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi.kivity@gmail.com>
Date: Tue, 8 Jan 2013 13:04:49 +0200
Subject: [PATCH] fd: add get_fd() helper
---
libc/fd.cc | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/libc/fd.cc b/libc/fd.cc
index 606c74234..03b0425a5 100644
--- a/libc/fd.cc
+++ b/libc/fd.cc
@@ -71,6 +71,19 @@ int open(const char* fname, int mode, ...)
});
}
+std::shared_ptr<file_desc> get_fd(int fd)
+{
+ if (fd < 0) {
+ return std::shared_ptr<file_desc>();
+ }
+ return with_lock(file_table_mutex, [=] {
+ if (size_t(fd) >= file_table.size()) {
+ return std::shared_ptr<file_desc>();
+ }
+ return file_table[fd];
+ });
+}
+
namespace {
int do_stat1(fileref f, struct stat* buf)
--
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