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e789564429
works for soft linked objects and returns an error for everything else. This is based upon a fix by Peter Bengtsson. Thank you very much! - Moved the lstat() local Lock() function into its own separate file. - uname() now returns correct and robust information for OS version numbers > 36. This integrates a fix by Peter Bengtsson. Thank you very much! - Moved the crtbegin.o/crtend.o files out of the link libraries. Moving them in was intended to work as a fix for the shared library build, but now it seems that this has to be done at the link stage through the GCC specs file... - Integrated a fix for __rem_pio2() which affects sin(), tan() and cos(), contributed by Steven Solie. Thank you very much! git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@15161 87f5fb63-7c3d-0410-a384-fd976d0f7a62
150 lines
3.8 KiB
C
150 lines
3.8 KiB
C
/*
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* $Id: unistd_readlink.c,v 1.9 2006-11-13 09:25:28 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2006 by Olaf Barthel <olsen (at) sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STDLIB_NULL_POINTER_CHECK_H
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#include "stdlib_null_pointer_check.h"
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#endif /* _STDLIB_NULL_POINTER_CHECK_H */
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/****************************************************************************/
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#ifndef _UNISTD_HEADERS_H
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#include "unistd_headers.h"
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#endif /* _UNISTD_HEADERS_H */
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#ifndef _STAT_HEADERS_H
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#include "stat_headers.h"
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#endif /* _STAT_HEADERS_H */
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/****************************************************************************/
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/* The following is not part of the ISO 'C' (1994) standard. */
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/****************************************************************************/
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int
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readlink(const char * path_name, char * buffer, int buffer_size)
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{
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#if defined(UNIX_PATH_SEMANTICS)
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struct name_translation_info path_name_nti;
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struct name_translation_info buffer_nti;
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#endif /* UNIX_PATH_SEMANTICS */
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BPTR lock = ZERO;
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int result = ERROR;
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int target_length = -1;
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ENTER();
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SHOWSTRING(path_name);
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SHOWPOINTER(buffer);
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SHOWVALUE(buffer_size);
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assert( path_name != NULL && buffer != NULL );
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if(__check_abort_enabled)
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__check_abort();
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#if defined(CHECK_FOR_NULL_POINTERS)
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{
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if(path_name == NULL || buffer == NULL)
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{
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SHOWSTRING("invalid parameters");
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__set_errno(EFAULT);
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goto out;
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}
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}
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#endif /* CHECK_FOR_NULL_POINTERS */
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#if defined(UNIX_PATH_SEMANTICS)
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{
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if(__unix_path_semantics)
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{
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if(path_name[0] == '\0')
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{
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SHOWMSG("no name given");
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__set_errno(ENOENT);
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goto out;
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}
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if(__translate_unix_to_amiga_path_name(&path_name,&path_name_nti) != 0)
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goto out;
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}
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}
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#endif /* UNIX_PATH_SEMANTICS */
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D(("trying to get a lock on '%s'",path_name));
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PROFILE_OFF();
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lock = __lock((STRPTR)path_name,SHARED_LOCK,&target_length,buffer,(size_t)buffer_size);
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PROFILE_ON();
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if(lock != ZERO)
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{
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__set_errno(EINVAL);
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goto out;
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}
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else if (target_length <= 0) /* No a soft-link. */
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{
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__set_errno(__translate_io_error_to_errno(IoErr()));
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goto out;
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}
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#if defined(UNIX_PATH_SEMANTICS)
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{
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if(__unix_path_semantics)
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{
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if(__translate_amiga_to_unix_path_name((char const **)&buffer,&buffer_nti) != 0)
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goto out;
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__restore_path_name((char const **)&buffer,&buffer_nti);
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strcpy(buffer,buffer_nti.substitute);
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}
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}
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#endif /* UNIX_PATH_SEMANTICS */
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result = strlen(buffer);
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SHOWSTRING(buffer);
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out:
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PROFILE_OFF();
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UnLock(lock);
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PROFILE_ON();
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RETURN(result);
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return(result);
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}
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