2002-07-25 Jeff Johnston <jjohnstn@redhat.com>

        * libc/sys/linux/Makefile.am: Add confstr.c.
        * libc/sys/linux/Makefile.in: Regenerated.
        * libc/sys/linux/confstr.c: New file.
        * libc/sys/linux/confstr.h: Ditto.
        * libc/sys/linux/sys/unistd.h: Include <features.h> and
        <bits/environments.h>.

1 files changed, 161 insertions, 0 deletions

diff --git a/newlib/libc/sys/linux/confstr.c b/newlib/libc/sys/linux/confstr.c
new file mode 100644
index 000000000..6b566b308
--- /dev/null
+++ b/newlib/libc/sys/linux/confstr.c
@@ -0,0 +1,161 @@
+/* Copyright (C) 1991, 1996, 1997, 2000, 2001 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#define _GNU_SOURCE 1
+
+#include <stddef.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <confstr.h>
+
+/* If BUF is not NULL and LEN > 0, fill in at most LEN - 1 bytes
+   of BUF with the value corresponding to NAME and zero-terminate BUF.
+   Return the number of bytes required to hold NAME's entire value.  */
+size_t
+confstr (name, buf, len)
+     int name;
+     char *buf;
+     size_t len;
+{
+  const char *string;
+  size_t string_len;
+
+  switch (name)
+    {
+    case _CS_PATH:
+      {
+	static const char cs_path[] = CS_PATH;
+	string = cs_path;
+	string_len = sizeof (cs_path);
+      }
+      break;
+
+    case _CS_V6_WIDTH_RESTRICTED_ENVS:
+      /* We have to return a newline-separated list of named of
+	 programming environements in which the widths of blksize_t,
+	 cc_t, mode_t, nfds_t, pid_t, ptrdiff_t, size_t, speed_t,
+	 ssize_t, suseconds_t, tcflag_t, useconds_t, wchar_t, and
+	 wint_t types are no greater than the width of type long.
+
+	 Currently this means all environment which the system allows.  */
+      {
+	static const char restenvs[] =
+#if _POSIX_V6_ILP32_OFF32 > 0
+	"_POSIX_V6_ILP32_OFF32"
+#endif
+#if _POSIX_V6_ILP32_OFFBIG > 0
+# if _POSIX_V6_ILP32_OFF32 > 0
+	"\n"
+# endif
+	"_POSIX_V6_ILP32_OFFBIG"
+#endif
+#if _POSIX_V6_LP64_OFF64 > 0
+# if _POSIX_V6_ILP32_OFF32 > 0 || _POSIX_V6_ILP32_OFFBIG > 0
+	"\n"
+# endif
+	"_POSIX_V6_LP64_OFF64"
+#endif
+#if _POSIX_V6_LPBIG_OFFBIG > 0
+# if _POSIX_V6_ILP32_OFF32 > 0 || _POSIX_V6_ILP32_OFFBIG > 0 \
+     || _POSIX_V6_LP64_OFF64 > 0
+	"\n"
+# endif
+	"_POSIX_V6_LPBIG_OFFBIG"
+#endif
+	  ;
+	string = restenvs;
+	string_len = sizeof (restenvs);
+      }
+      break;
+
+    case _CS_XBS5_ILP32_OFFBIG_CFLAGS:
+    case _CS_POSIX_V6_ILP32_OFFBIG_CFLAGS:
+    case _CS_LFS_CFLAGS:
+#if _XBS5_LP64_OFF64 == -1 && _XBS5_LPBIG_OFFBIG == -1 && _XBS5_ILP32_OFFBIG == 1
+      /* Signal that we want the new ABI.  */
+      {
+	static const char file_offset[] = "-D_FILE_OFFSET_BITS=64";
+	string = file_offset;
+	string_len = sizeof (file_offset);
+      }
+      break;
+#endif
+      /* FALLTHROUGH */
+
+    case _CS_LFS_LINTFLAGS:
+    case _CS_LFS_LDFLAGS:
+    case _CS_LFS_LIBS:
+    case _CS_LFS64_CFLAGS:
+    case _CS_LFS64_LINTFLAGS:
+    case _CS_LFS64_LDFLAGS:
+    case _CS_LFS64_LIBS:
+
+    case _CS_XBS5_ILP32_OFF32_CFLAGS:
+    case _CS_XBS5_ILP32_OFF32_LDFLAGS:
+    case _CS_XBS5_ILP32_OFF32_LIBS:
+    case _CS_XBS5_ILP32_OFF32_LINTFLAGS:
+    case _CS_XBS5_ILP32_OFFBIG_LDFLAGS:
+    case _CS_XBS5_ILP32_OFFBIG_LIBS:
+    case _CS_XBS5_ILP32_OFFBIG_LINTFLAGS:
+    case _CS_XBS5_LP64_OFF64_CFLAGS:
+    case _CS_XBS5_LP64_OFF64_LDFLAGS:
+    case _CS_XBS5_LP64_OFF64_LIBS:
+    case _CS_XBS5_LP64_OFF64_LINTFLAGS:
+    case _CS_XBS5_LPBIG_OFFBIG_CFLAGS:
+    case _CS_XBS5_LPBIG_OFFBIG_LDFLAGS:
+    case _CS_XBS5_LPBIG_OFFBIG_LIBS:
+    case _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS:
+
+    case _CS_POSIX_V6_ILP32_OFF32_CFLAGS:
+    case _CS_POSIX_V6_ILP32_OFF32_LDFLAGS:
+    case _CS_POSIX_V6_ILP32_OFF32_LIBS:
+    case _CS_POSIX_V6_ILP32_OFF32_LINTFLAGS:
+    case _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS:
+    case _CS_POSIX_V6_ILP32_OFFBIG_LIBS:
+    case _CS_POSIX_V6_ILP32_OFFBIG_LINTFLAGS:
+    case _CS_POSIX_V6_LP64_OFF64_CFLAGS:
+    case _CS_POSIX_V6_LP64_OFF64_LDFLAGS:
+    case _CS_POSIX_V6_LP64_OFF64_LIBS:
+    case _CS_POSIX_V6_LP64_OFF64_LINTFLAGS:
+    case _CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS:
+    case _CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS:
+    case _CS_POSIX_V6_LPBIG_OFFBIG_LIBS:
+    case _CS_POSIX_V6_LPBIG_OFFBIG_LINTFLAGS:
+      /* GNU libc does not require special actions to use LFS functions.  */
+      string = "";
+      string_len = 1;
+      break;
+
+    default:
+      __set_errno (EINVAL);
+      return 0;
+    }
+
+  if (len > 0 && buf != NULL)
+    {
+      if (string_len <= len)
+	memcpy (buf, string, string_len);
+      else
+	{
+	  memcpy (buf, string, len - 1);
+	  buf[len - 1] = '\0';
+	}
+    }
+  return string_len;
+}