From bb03705726ef1357dbb5ac2bccc890b6b105db9e Mon Sep 17 00:00:00 2001
From: Siva Chandra Reddy <sivachandra@google.com>
Date: Tue, 14 Mar 2023 01:00:23 +0000
Subject: [PATCH] [libc] Switch termios implementations to libc_errno.

---
 libc/src/termios/linux/tcdrain.cpp  | 2 +-
 libc/src/termios/linux/tcflush.cpp  | 2 +-
 libc/src/termios/linux/tcgetsid.cpp | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/libc/src/termios/linux/tcdrain.cpp b/libc/src/termios/linux/tcdrain.cpp
index 910e62b..1a51cd3 100644
--- a/libc/src/termios/linux/tcdrain.cpp
+++ b/libc/src/termios/linux/tcdrain.cpp
@@ -21,7 +21,7 @@ namespace __llvm_libc {
 LLVM_LIBC_FUNCTION(int, tcdrain, (int fd)) {
   long ret = __llvm_libc::syscall_impl(SYS_ioctl, fd, TCSBRK, 1);
   if (ret < 0) {
-    errno = -ret;
+    libc_errno = -ret;
     return -1;
   }
   return 0;
diff --git a/libc/src/termios/linux/tcflush.cpp b/libc/src/termios/linux/tcflush.cpp
index fd876af..8e1f407 100644
--- a/libc/src/termios/linux/tcflush.cpp
+++ b/libc/src/termios/linux/tcflush.cpp
@@ -21,7 +21,7 @@ namespace __llvm_libc {
 LLVM_LIBC_FUNCTION(int, tcflush, (int fd, int queue_selector)) {
   long ret = __llvm_libc::syscall_impl(SYS_ioctl, fd, TCFLSH, queue_selector);
   if (ret < 0) {
-    errno = -ret;
+    libc_errno = -ret;
     return -1;
   }
   return 0;
diff --git a/libc/src/termios/linux/tcgetsid.cpp b/libc/src/termios/linux/tcgetsid.cpp
index b366fd4..c0491d9 100644
--- a/libc/src/termios/linux/tcgetsid.cpp
+++ b/libc/src/termios/linux/tcgetsid.cpp
@@ -22,7 +22,7 @@ LLVM_LIBC_FUNCTION(pid_t, tcgetsid, (int fd)) {
   pid_t sid;
   long ret = __llvm_libc::syscall_impl(SYS_ioctl, fd, TIOCGSID, &sid);
   if (ret < 0) {
-    errno = -ret;
+    libc_errno = -ret;
     return -1;
   }
   return sid;
-- 
2.7.4