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/***************************************************************
SYS-TRUNCATE.C
This file contains Linux/i386/ILP32 implementation of
__cpu_sys_truncate().
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 <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#include <libmcpu.h>
#include <cpu-sysdeps.h>
__mpu_int64_t
__cpu_sys_truncate( int dirfd, const char *path, __mpu_int64_t length )
{
off_t host_length;
if( !path ) return( -(__mpu_int64_t)__MCPU_EFAULT );
host_length = (off_t)length;
if( (__mpu_int64_t)host_length != length )
return( -(__mpu_int64_t)__MCPU_EOVERFLOW );
{
int fd;
int error;
fd = openat( dirfd, path, O_WRONLY | O_CLOEXEC );
if( fd < 0 ) return( -(__mpu_int64_t)__cpu_errno_from_host( errno ) );
if( ftruncate( fd, host_length ) < 0 )
{
error = errno;
(void)close( fd );
return( -(__mpu_int64_t)__cpu_errno_from_host( error ) );
}
(void)close( fd );
}
return( 0 );
} /* End of __cpu_sys_truncate() */
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