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Squashed commit of the following:

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Replace all calls to sigprocmask() in the OS proper with calls to nxsig_procmask().

    sched/signal:  Add internal OS interface nxsig_procmask().  This internal interface is equivalent to the standard sigprocmask() used by applications except that it does not modify the errno value.  Also fixes a problem in that the original sigprocmask() was not setting the errno.
This commit is contained in:
Gregory Nutt
2017-10-07 12:16:10 -06:00
parent 4810499d3a
commit d633c9bf8c
8 changed files with 138 additions and 42 deletions
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binfmt/binfmt_schedunload.c
+8 -10
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@@ -45,6 +45,7 @@
#include <nuttx/irq.h>
#include <nuttx/kmalloc.h>
#include <nuttx/signal.h>
#include <nuttx/binfmt/binfmt.h>
#include "binfmt.h"
@@ -100,10 +101,10 @@ static void unload_list_add(pid_t pid, FAR struct binary_s *bin)
bin->pid = pid;
/* Disable deliver of any signals while we muck with the list. The graceful
* way to do this would be block delivery of SIGCHLD would be with
* sigprocmask. Here we do it the quick'n'dirty way by just disabling
* interrupts.
/* Disable deliver of any signals while we muck with the list. The
* graceful way to do this would be block delivery of SIGCHLD would be
* with nxsig_procmask. Here we do it the quick'n'dirty way by just
* disabling interrupts.
*/
flags = enter_critical_section();
@@ -277,13 +278,10 @@ int schedule_unload(pid_t pid, FAR struct binary_s *bin)
(void)sigemptyset(&set);
(void)sigaddset(&set, SIGCHLD);
ret = sigprocmask(SIG_UNBLOCK, &set, NULL);
if (ret != OK)
ret = nxsig_procmask(SIG_UNBLOCK, &set, NULL);
if (ret < 0)
{
/* The errno value will get trashed by the following debug output */
ret = -get_errno();
berr("ERROR: sigprocmask failed: %d\n", ret);
berr("ERROR: nxsig_procmask failed: %d\n", ret);
return ret;
}