Merged jnlib into common.

common/mischelp.h

@@ -0,0 +1,102 @@
+/* mischelp.h - Miscellaneous helper macros and functions
+ * Copyright (C) 1999, 2000, 2001, 2002, 2003,
+ *               2006, 2007, 2009  Free Software Foundation, Inc.
+ *
+ * This file is part of JNLIB.
+ *
+ * JNLIB 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 3 of
+ * the License, or (at your option) any later version.
+ *
+ * JNLIB 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 this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBJNLIB_MISCHELP_H
+#define LIBJNLIB_MISCHHELP_H
+
+
+/* Because we can't use the internal jnlib_free macro in inline
+   functions we provide a wrapper function as well.   */
+void _jnlib_free (void *p);
+
+/* Check whether the files NAME1 and NAME2 are identical.  This is for
+   example achieved by comparing the inode numbers of the files.  */
+int same_file_p (const char *name1, const char *name2);
+
+
+#ifndef HAVE_TIMEGM
+#include <time.h>
+time_t timegm (struct tm *tm);
+#endif /*!HAVE_TIMEGM*/
+
+
+#define DIM(v)		     (sizeof(v)/sizeof((v)[0]))
+#define DIMof(type,member)   DIM(((type *)0)->member)
+
+
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5 )
+# define JNLIB_GCC_M_FUNCTION 1
+# define JNLIB_GCC_A_NR 	     __attribute__ ((noreturn))
+# define JNLIB_GCC_A_PRINTF( f, a )  __attribute__ ((format (printf,f,a)))
+# define JNLIB_GCC_A_NR_PRINTF( f, a ) \
+			    __attribute__ ((noreturn, format (printf,f,a)))
+#else
+# define JNLIB_GCC_A_NR
+# define JNLIB_GCC_A_PRINTF( f, a )
+# define JNLIB_GCC_A_NR_PRINTF( f, a )
+#endif
+
+
+/* To avoid that a compiler optimizes certain memset calls away, these
+   macros may be used instead. */
+#define wipememory2(_ptr,_set,_len) do { \
+              volatile char *_vptr=(volatile char *)(_ptr); \
+              size_t _vlen=(_len); \
+              while(_vlen) { *_vptr=(_set); _vptr++; _vlen--; } \
+                  } while(0)
+#define wipememory(_ptr,_len) wipememory2(_ptr,0,_len)
+
+
+/* Include hacks which are mainly required for Slowaris.  */
+#ifdef JNLIB_NEED_AFLOCAL
+#ifndef HAVE_W32_SYSTEM
+# include <sys/socket.h>
+# include <sys/un.h>
+#else
+# include <windows.h>
+#endif
+
+#ifndef PF_LOCAL
+# ifdef PF_UNIX
+#  define PF_LOCAL PF_UNIX
+# else
+#  define PF_LOCAL AF_UNIX
+# endif
+#endif /*PF_LOCAL*/
+#ifndef AF_LOCAL
+# define AF_LOCAL AF_UNIX
+#endif /*AF_UNIX*/
+
+/* We used to avoid this macro in GnuPG and inlined the AF_LOCAL name
+   length computation directly with the little twist of adding 1 extra
+   byte.  It seems that this was needed once on an old HP/UX box and
+   there are also rumours that 4.3 Reno and DEC systems need it.  This
+   one-off buglet did not harm any current system until it came to Mac
+   OS X where the kernel (as of May 2009) exhibited a strange bug: The
+   systems basically froze in the connect call if the passed name
+   contained an invalid directory part.  Ignore the old Unices.  */
+#ifndef SUN_LEN
+# define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \
+	               + strlen ((ptr)->sun_path))
+#endif /*SUN_LEN*/
+#endif /*JNLIB_NEED_AFLOCAL*/
+
+
+#endif /*LIBJNLIB_MISCHELP_H*/