linux-kernel - [PATCH nolibc 27/61] tools/nolibc/sys: make getpgrp(), getpid(), gettid() not set errno

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Message-Id: <20220419004225.3952530-27-paulmck@kernel.org>
Date:   Mon, 18 Apr 2022 17:41:51 -0700
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     gwml@...r.gnuweeb.org, kernel-team@...com, w@....eu,
        Willy Tarreau <w@....eu>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH nolibc 27/61] tools/nolibc/sys: make getpgrp(), getpid(), gettid() not set errno

From: Willy Tarreau <w@....eu>

These syscalls never fail so there is no need to extract and set errno
for them.

Signed-off-by: Willy Tarreau <w@....eu>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 tools/include/nolibc/sys.h | 24 +++---------------------
 1 file changed, 3 insertions(+), 21 deletions(-)

diff --git a/tools/include/nolibc/sys.h b/tools/include/nolibc/sys.h
index 539af457a91b..ef017cc0a580 100644
--- a/tools/include/nolibc/sys.h
+++ b/tools/include/nolibc/sys.h
@@ -458,13 +458,7 @@ pid_t sys_getpgrp(void)
 static __attribute__((unused))
 pid_t getpgrp(void)
 {
-	pid_t ret = sys_getpgrp();
-
-	if (ret < 0) {
-		SET_ERRNO(-ret);
-		ret = -1;
-	}
-	return ret;
+	return sys_getpgrp();
 }
 
 
@@ -481,13 +475,7 @@ pid_t sys_getpid(void)
 static __attribute__((unused))
 pid_t getpid(void)
 {
-	pid_t ret = sys_getpid();
-
-	if (ret < 0) {
-		SET_ERRNO(-ret);
-		ret = -1;
-	}
-	return ret;
+	return sys_getpid();
 }
 
 
@@ -504,13 +492,7 @@ pid_t sys_gettid(void)
 static __attribute__((unused))
 pid_t gettid(void)
 {
-	pid_t ret = sys_gettid();
-
-	if (ret < 0) {
-		SET_ERRNO(-ret);
-		ret = -1;
-	}
-	return ret;
+	return sys_gettid();
 }
 
 
-- 
2.31.1.189.g2e36527f23