[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/libc/glibc/glibc-2.22/signal/sigvec.c b/ap/libc/glibc/glibc-2.22/signal/sigvec.c
new file mode 100644
index 0000000..1f9395e
--- /dev/null
+++ b/ap/libc/glibc/glibc-2.22/signal/sigvec.c
@@ -0,0 +1,203 @@
+/* ABI compatibility for obsolete sigvec function from 4.2BSD.
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <shlib-compat.h>
+
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_21)
+
+# include <signal.h>
+# include <errno.h>
+# include <stddef.h>
+
+
+/* These are the struct sigvec and SV_* bit definitions that
+ used to be in <signal.h>. The whole interface now exists
+ solely for ABI compatibility, so it can just be here. */
+struct sigvec
+ {
+ __sighandler_t sv_handler; /* Signal handler. */
+ int sv_mask; /* Mask of signals to be blocked. */
+
+ int sv_flags; /* Flags (see below). */
+ };
+# define SV_ONSTACK (1 << 0)/* Take the signal on the signal stack. */
+# define SV_INTERRUPT (1 << 1)/* Do not restart system calls. */
+# define SV_RESETHAND (1 << 2)/* Reset handler to SIG_DFL on receipt. */
+
+
+/* Include macros to convert between `sigset_t' and old-style mask. */
+# include <sigset-cvt-mask.h>
+
+# ifndef SA_RESETHAND
+/* When sigaction lacks the extension bit for it,
+ we use a wrapper handler to support SV_RESETHAND. */
+struct sigvec_wrapper_data
+{
+ __sighandler_t sw_handler;
+ unsigned int sw_mask;
+};
+
+static void sigvec_wrapper_handler (int sig) __THROW;
+
+static struct sigvec_wrapper_data sigvec_wrapper_data[NSIG];
+# endif
+
+
+/* If VEC is non-NULL, set the handler for SIG to the `sv_handler' member
+ of VEC. The signals in `sv_mask' will be blocked while the handler runs.
+ If the SV_RESETHAND bit is set in `sv_flags', the handler for SIG will be
+ reset to SIG_DFL before `sv_handler' is entered. If OVEC is non-NULL,
+ it is filled in with the old information for SIG. */
+int
+__sigvec (int sig,
+ const struct sigvec *vec,
+ struct sigvec *ovec)
+{
+ struct sigaction old;
+
+# ifndef SA_RESETHAND
+ if (vec == NULL || !(vec->sv_flags & SV_RESETHAND))
+# endif
+ {
+ struct sigaction new, *n;
+
+ if (vec == NULL)
+ n = NULL;
+ else
+ {
+ __sighandler_t handler;
+ unsigned int mask;
+ unsigned int sv_flags;
+ unsigned int sa_flags;
+
+ handler = vec->sv_handler;
+ mask = vec->sv_mask;
+ sv_flags = vec->sv_flags;
+ sa_flags = 0;
+ if (sv_flags & SV_ONSTACK)
+ {
+# ifdef SA_ONSTACK
+ sa_flags |= SA_ONSTACK;
+# else
+ __set_errno (ENOSYS);
+ return -1;
+# endif
+ }
+# ifdef SA_RESTART
+ if (!(sv_flags & SV_INTERRUPT))
+ sa_flags |= SA_RESTART;
+# endif
+# ifdef SA_RESETHAND
+ if (sv_flags & SV_RESETHAND)
+ sa_flags |= SA_RESETHAND;
+# endif
+ n = &new;
+ new.sa_handler = handler;
+ if (sigset_set_old_mask (&new.sa_mask, mask) < 0)
+ return -1;
+ new.sa_flags = sa_flags;
+ }
+
+ if (__sigaction (sig, n, &old) < 0)
+ return -1;
+ }
+# ifndef SA_RESETHAND
+ else
+ {
+ __sighandler_t handler;
+ unsigned int mask;
+ struct sigvec_wrapper_data *data;
+ struct sigaction wrapper;
+
+ handler = vec->sv_handler;
+ mask = (unsigned int)vec->sv_mask;
+ data = &sigvec_wrapper_data[sig];
+ wrapper.sa_handler = sigvec_wrapper_handler;
+ /* FIXME: should we set wrapper.sa_mask, wrapper.sa_flags?? */
+ data->sw_handler = handler;
+ data->sw_mask = mask;
+
+ if (__sigaction (sig, &wrapper, &old) < 0)
+ return -1;
+ }
+# endif
+
+ if (ovec != NULL)
+ {
+ __sighandler_t handler;
+ unsigned int sv_flags;
+ unsigned int sa_flags;
+ unsigned int mask;
+
+ handler = old.sa_handler;
+ sv_flags = 0;
+ sa_flags = old.sa_flags;
+# ifndef SA_RESETHAND
+ if (handler == sigvec_wrapper_handler)
+ {
+ handler = sigvec_wrapper_data[sig].sw_handler;
+ /* should we use data->sw_mask?? */
+ sv_flags |= SV_RESETHAND;
+ }
+# else
+ if (sa_flags & SA_RESETHAND)
+ sv_flags |= SV_RESETHAND;
+# endif
+ mask = sigset_get_old_mask (&old.sa_mask);
+# ifdef SA_ONSTACK
+ if (sa_flags & SA_ONSTACK)
+ sv_flags |= SV_ONSTACK;
+# endif
+# ifdef SA_RESTART
+ if (!(sa_flags & SA_RESTART))
+# endif
+ sv_flags |= SV_INTERRUPT;
+ ovec->sv_handler = handler;
+ ovec->sv_mask = (int)mask;
+ ovec->sv_flags = (int)sv_flags;
+ }
+
+ return 0;
+}
+
+compat_symbol (libc, __sigvec, sigvec, GLIBC_2_0);
+
+# ifndef SA_RESETHAND
+static void
+sigvec_wrapper_handler (sig)
+ int sig;
+{
+ struct sigvec_wrapper_data *data;
+ struct sigaction act;
+ int save;
+ __sighandler_t handler;
+
+ data = &sigvec_wrapper_data[sig];
+ act.sa_handler = SIG_DFL;
+ act.sa_flags = 0;
+ sigset_set_old_mask (&act.sa_mask, data->sw_mask);
+ handler = data->sw_handler;
+ save = errno;
+ (void) __sigaction (sig, &act, (struct sigaction *) NULL);
+ __set_errno (save);
+
+ (*handler) (sig);
+}
+# endif /* No SA_RESETHAND. */
+
+#endif /* SHLIB_COMPAT */