linux-kernel - [PATCH 1/9] tools/nolibc: the definition dup() was missing

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Message-Id: <20210121072031.23777-2-w@1wt.eu>
Date:   Thu, 21 Jan 2021 08:20:23 +0100
From:   Willy Tarreau <w@....eu>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Mark Rutland <mark.rutland@....com>, valentin.schneider@....com,
        linux-kernel@...r.kernel.org, Willy Tarreau <w@....eu>
Subject: [PATCH 1/9] tools/nolibc: the definition dup() was missing

dup() was mistakenly forgotten while sys_dup() was defined.
[This is nolibc's upstream commit 47cc42a79c92]

Signed-off-by: Willy Tarreau <w@....eu>
---
 tools/include/nolibc/nolibc.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tools/include/nolibc/nolibc.h b/tools/include/nolibc/nolibc.h
index e61d36cd4e50..3115c6467d10 100644
--- a/tools/include/nolibc/nolibc.h
+++ b/tools/include/nolibc/nolibc.h
@@ -1852,6 +1852,18 @@ int close(int fd)
 	return ret;
 }
 
+static __attribute__((unused))
+int dup(int fd)
+{
+	int ret = sys_dup(fd);
+
+	if (ret < 0) {
+		SET_ERRNO(-ret);
+		ret = -1;
+	}
+	return ret;
+}
+
 static __attribute__((unused))
 int dup2(int old, int new)
 {
-- 
2.28.0