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-rw-r--r--libc/sysdeps/linux/common/__rt_sigtimedwait.c88
-rw-r--r--libc/sysdeps/linux/common/__rt_sigwaitinfo.c95
-rw-r--r--libc/sysdeps/linux/common/sigprocmask.c1
3 files changed, 164 insertions, 20 deletions
diff --git a/libc/sysdeps/linux/common/__rt_sigtimedwait.c b/libc/sysdeps/linux/common/__rt_sigtimedwait.c
index 09409fe81..f468222af 100644
--- a/libc/sysdeps/linux/common/__rt_sigtimedwait.c
+++ b/libc/sysdeps/linux/common/__rt_sigtimedwait.c
@@ -2,6 +2,7 @@
/*
* __rt_sigtimedwait() for uClibc
*
+ * Copyright (C) 2006 by Steven Hill <sjhill@realitydiluted.com>
* Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
@@ -9,35 +10,84 @@
#include "syscalls.h"
#include <signal.h>
-#define __need_NULL
-#include <stddef.h>
+
#ifdef __NR_rt_sigtimedwait
-#define __NR___rt_sigtimedwait __NR_rt_sigtimedwait
-static _syscall4(int, __rt_sigtimedwait, const sigset_t *, set, siginfo_t *, info,
- const struct timespec *, timeout, size_t, setsize);
-int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info)
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# include <sysdep-cancel.h>
+
+static int do_sigtimedwait(const sigset_t *set, siginfo_t *info,
+ const struct timespec *timeout)
{
- return __rt_sigtimedwait(set, info, NULL, _NSIG / 8);
+# ifdef SIGCANCEL
+ sigset_t tmpset;
+
+ if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+ || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+ ))
+ {
+ /* Create a temporary mask without the bit for SIGCANCEL set. */
+ // We are not copying more than we have to.
+ __memcpy (&tmpset, set, _NSIG / 8);
+ __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+ __sigdelset (&tmpset, SIGSETXID);
+# endif
+ set = &tmpset;
+ }
+# endif
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ int result = INLINE_SYSCALL (rt_sigtimedwait, 4, set, info,
+ timeout, _NSIG / 8);
+
+ /* The kernel generates a SI_TKILL code in si_code in case tkill is
+ used. tkill is transparently used in raise(). Since having
+ SI_TKILL as a code is useful in general we fold the results
+ here. */
+ if (result != -1 && info != NULL && info->si_code == SI_TKILL)
+ info->si_code = SI_USER;
+
+ return result;
}
+/* Return any pending signal or wait for one for the given time. */
+int __sigtimedwait(const sigset_t *set, siginfo_t *info,
+ const struct timespec *timeout)
+{
+ if(SINGLE_THREAD_P)
+ return do_sigtimedwait(set, info, timeout);
+
+ int oldtype = LIBC_CANCEL_ASYNC();
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ int result = do_sigtimedwait(set, info, timeout);
+
+ LIBC_CANCEL_RESET(oldtype);
+
+ return result;
+}
+# else
+# define __need_NULL
+# include <stddef.h>
+# define __NR___rt_sigtimedwait __NR_rt_sigtimedwait
+static _syscall4(int, __rt_sigtimedwait, const sigset_t *, set,
+ siginfo_t *, info, const struct timespec *, timeout,
+ size_t, setsize);
+
int attribute_hidden __sigtimedwait(const sigset_t * set, siginfo_t * info,
- const struct timespec *timeout)
+ const struct timespec *timeout)
{
return __rt_sigtimedwait(set, info, timeout, _NSIG / 8);
}
+# endif
#else
-int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info)
-{
- if (set == NULL)
- __set_errno(EINVAL);
- else
- __set_errno(ENOSYS);
- return -1;
-}
-
int attribute_hidden __sigtimedwait(const sigset_t * set, siginfo_t * info,
- const struct timespec *timeout)
+ const struct timespec *timeout)
{
if (set == NULL)
__set_errno(EINVAL);
@@ -46,6 +96,4 @@ int attribute_hidden __sigtimedwait(const sigset_t * set, siginfo_t * info,
return -1;
}
#endif
-/* keep these weak so that libpthread can overwrite them */
weak_alias(__sigtimedwait,sigtimedwait)
-weak_alias(__sigwaitinfo,sigwaitinfo)
diff --git a/libc/sysdeps/linux/common/__rt_sigwaitinfo.c b/libc/sysdeps/linux/common/__rt_sigwaitinfo.c
new file mode 100644
index 000000000..81c34435f
--- /dev/null
+++ b/libc/sysdeps/linux/common/__rt_sigwaitinfo.c
@@ -0,0 +1,95 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * __rt_sigwaitinfo() for uClibc
+ *
+ * Copyright (C) 2006 by Steven Hill <sjhill@realitydiluted.com>
+ * Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * GNU Library General Public License (LGPL) version 2 or later.
+ */
+
+#include "syscalls.h"
+#include <signal.h>
+
+#ifdef __NR_rt_sigtimedwait
+
+# ifdef __UCLIBC_HAS_THREADS_NATIVE__
+# include <sysdep-cancel.h>
+
+static int do_sigwaitinfo(const sigset_t *set, siginfo_t *info)
+{
+# ifdef SIGCANCEL
+ sigset_t tmpset;
+
+ if (set != NULL && (__builtin_expect (__sigismember (set, SIGCANCEL), 0)
+# ifdef SIGSETXID
+ || __builtin_expect (__sigismember (set, SIGSETXID), 0)
+# endif
+ ))
+ {
+ /* Create a temporary mask without the bit for SIGCANCEL set. */
+ // We are not copying more than we have to.
+ __memcpy (&tmpset, set, _NSIG / 8);
+ __sigdelset (&tmpset, SIGCANCEL);
+# ifdef SIGSETXID
+ __sigdelset (&tmpset, SIGSETXID);
+# endif
+ set = &tmpset;
+ }
+# endif
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ int result = INLINE_SYSCALL (rt_sigtimedwait, 4, set, info,
+ NULL, _NSIG / 8);
+
+ /* The kernel generates a SI_TKILL code in si_code in case tkill is
+ used. tkill is transparently used in raise(). Since having
+ SI_TKILL as a code is useful in general we fold the results
+ here. */
+ if (result != -1 && info != NULL && info->si_code == SI_TKILL)
+ info->si_code = SI_USER;
+
+ return result;
+}
+
+/* Return any pending signal or wait for one for the given time. */
+int __sigwaitinfo(const sigset_t *set, siginfo_t *info)
+{
+ if(SINGLE_THREAD_P)
+ return do_sigwaitinfo(set, info);
+
+ int oldtype = LIBC_CANCEL_ASYNC();
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ int result = do_sigwaitinfo(set, info);
+
+ LIBC_CANCEL_RESET(oldtype);
+
+ return result;
+}
+# else
+# define __need_NULL
+# include <stddef.h>
+# define __NR___rt_sigwaitinfo __NR_rt_sigwaitinfo
+static _syscall4(int, __rt_sigwaitinfo, const sigset_t *, set,
+ siginfo_t *, info, const struct timespec *, timeout,
+ size_t, setsize);
+
+int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info)
+{
+ return __rt_sigwaitinfo(set, info, NULL, _NSIG / 8);
+}
+# endif
+#else
+int attribute_hidden __sigwaitinfo(const sigset_t * set, siginfo_t * info)
+{
+ if (set == NULL)
+ __set_errno(EINVAL);
+ else
+ __set_errno(ENOSYS);
+ return -1;
+}
+#endif
+weak_alias(__sigwaitinfo,sigwaitinfo)
diff --git a/libc/sysdeps/linux/common/sigprocmask.c b/libc/sysdeps/linux/common/sigprocmask.c
index c555bb51b..803f5b4ae 100644
--- a/libc/sysdeps/linux/common/sigprocmask.c
+++ b/libc/sysdeps/linux/common/sigprocmask.c
@@ -2,6 +2,7 @@
/*
* sigprocmask() for uClibc
*
+ * Copyright (C) 2006 by Steven J. Hill <sjhill@uclibc.org>
* Copyright (C) 2000-2004 by Erik Andersen <andersen@codepoet.org>
*
* GNU Library General Public License (LGPL) version 2 or later.
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-08 21:18:20 +0000