/***************************************************************
  SYS-READLINK.C

       This file contains Linux/i386/ILP32 implementation of
       __cpu_sys_readlink().

       PART OF : CPU - library .

       USAGE   : Internal only .

       Copyright (C) 2026  by Andrew V.Kosteltsev.
       All Rights Reserved.
 ***************************************************************/

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <errno.h>
#include <stdint.h>
#include <unistd.h>

#include <libmcpu.h>
#include <cpu-sysdeps.h>


__mpu_int64_t
__cpu_sys_readlink( int dirfd, const char *path, void *buf,
                    __mpu_uint64_t count )
{
  ssize_t ret;

  if( !path ) return( -(__mpu_int64_t)__MCPU_EFAULT );
  if( count > (__mpu_uint64_t)SIZE_MAX ) return( -(__mpu_int64_t)__MCPU_EINVAL );

  ret = readlinkat( dirfd, path, (char *)buf, (size_t)count );
  if( ret < 0 ) return( -(__mpu_int64_t)__cpu_errno_from_host( errno ) );
  return( (__mpu_int64_t)ret );

} /* End of __cpu_sys_readlink() */