zephyr/kernel/errno.c
David B. Kinder ac74d8b652 license: Replace Apache boilerplate with SPDX tag
Replace the existing Apache 2.0 boilerplate header with an SPDX tag
throughout the zephyr code tree. This patch was generated via a
script run over the master branch.

Also updated doc/porting/application.rst that had a dependency on
line numbers in a literal include.

Manually updated subsys/logging/sys_log.c that had a malformed
header in the original file.  Also cleanup several cases that already
had a SPDX tag and we either got a duplicate or missed updating.

Jira: ZEP-1457

Change-Id: I6131a1d4ee0e58f5b938300c2d2fc77d2e69572c
Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
2017-01-19 03:50:58 +00:00

30 lines
534 B
C

/*
* Copyright (c) 2015 Wind River Systems, Inc.
*
* SPDX-License-Identifier: Apache-2.0
*/
/** @file
*
* @brief Per-thread errno accessor function
*
* Allow accessing the errno for the current thread without involving the
* context switching.
*/
#include <kernel_structs.h>
/*
* Define _k_neg_eagain for use in assembly files as errno.h is
* not assembly language safe.
* FIXME: wastes 4 bytes
*/
const int _k_neg_eagain = -EAGAIN;
#ifdef CONFIG_ERRNO
int *_get_errno(void)
{
return &_current->errno_var;
}
#endif