2.5-18.1

2025-07-28 00:21:52 +03:00 · 2007-07-12 18:26:36 +00:00
parent 7d58530341
commit 0ecb606cb6
6215 changed files with 494638 additions and 305010 deletions
--- a/sysdeps/unix/sysv/linux/pselect.c
+++ b/sysdeps/unix/sysv/linux/pselect.c
@ -0,0 +1,100 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2006.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <errno.h>
+#include <signal.h>
+#include <time.h>
+#include <sys/poll.h>
+#include <kernel-features.h>
+#include <sysdep-cancel.h>
+
+
+#ifdef __NR_pselect6
+static int __generic_pselect (int nfds, fd_set *readfds, fd_set *writefds,
+			      fd_set *exceptfds,
+			      const struct timespec *timeout,
+			      const sigset_t *sigmask);
+
+
+int
+__pselect (int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds,
+	   const struct timespec *timeout, const sigset_t *sigmask)
+{
+  /* The Linux kernel can in some situations update the timeout value.
+     We do not want that so use a local variable.  */
+  struct timespec tval;
+  if (timeout != NULL)
+    {
+      tval = *timeout;
+      timeout = &tval;
+    }
+
+  /* Note: the system call expects 7 values but on most architectures
+     we can only pass in 6 directly.  If there is an architecture with
+     support for more parameters a new version of this file needs to
+     be created.  */
+  struct
+  {
+    const sigset_t *ss;
+    size_t ss_len;
+  } data;
+
+  data.ss = sigmask;
+  data.ss_len = _NSIG / 8;
+
+  int result;
+
+#ifndef CALL_PSELECT6
+# define CALL_PSELECT6(nfds, readfds, writefds, exceptfds, timeout, data) \
+  INLINE_SYSCALL (pselect6, 6, nfds, readfds, writefds, exceptfds,	      \
+		  timeout, data)
+#endif
+
+  if (SINGLE_THREAD_P)
+    result = CALL_PSELECT6 (nfds, readfds, writefds, exceptfds, timeout,
+			    &data);
+  else
+    {
+      int oldtype = LIBC_CANCEL_ASYNC ();
+
+      result = CALL_PSELECT6 (nfds, readfds, writefds, exceptfds, timeout,
+			      &data);
+
+      LIBC_CANCEL_RESET (oldtype);
+    }
+
+# ifndef __ASSUME_PSELECT
+  if (result == -1 && errno == ENOSYS)
+    result = __generic_pselect (nfds, readfds, writefds, exceptfds, timeout,
+				sigmask);
+# endif
+
+  return result;
+}
+weak_alias (__pselect, pselect)
+strong_alias (__pselect, __libc_pselect)
+
+# ifndef __ASSUME_PSELECT
+#  define __pselect static __generic_pselect
+# endif
+#endif
+
+#ifndef __ASSUME_PSELECT
+# include <misc/pselect.c>
+#endif