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libc/semaphore: Read semaphore value by using NXSEM_COUNT macro

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We should not access semaphore internals directly outside sched/semaphore.

Just read it via the NXSEM_COUNT macro provided.

Signed-off-by: Jukka Laitinen <jukka.laitinen@tii.ae>
This commit is contained in:
Jukka Laitinen 2025-04-03 11:30:52 +03:00 • committed by Lup Yuen Lee
parent 9967593009
commit 84cb21791f
1 changed files with 2 additions and 1 deletions
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3
libs/libc/semaphore/sem_getvalue.c
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@ -29,6 +29,7 @@
#include <errno.h>
#include <nuttx/semaphore.h>
#include <nuttx/atomic.h>
/****************************************************************************
* Public Functions
@ -64,7 +65,7 @@ int nxsem_get_value(FAR sem_t *sem, FAR int *sval)
{
if (sem != NULL && sval != NULL)
{
*sval = sem->semcount;
*sval = atomic_read(NXSEM_COUNT(sem));
return OK;
}