From 61921945b6c1d269b64c708070dba4afa85f1556 Mon Sep 17 00:00:00 2001 From: Jeff Johnston Date: Thu, 25 Jul 2002 18:41:15 +0000 Subject: 2002-07-25 Jeff Johnston * 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 and . --- newlib/libc/sys/linux/confstr.c | 161 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 newlib/libc/sys/linux/confstr.c (limited to 'newlib/libc/sys/linux/confstr.c') 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 +#include +#include +#include +#include + +/* 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; +} -- cgit v1.2.3