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/* Convert between the NaCl ABI's `struct stat' format, and libc's.
Copyright (C) 2015-2017 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, see
<http://www.gnu.org/licenses/>. */
#include <string.h>
#include <sys/stat.h>
#include <xstatconv.h>
internal_function
int
__xstat_conv (int vers, const struct nacl_abi_stat *kbuf, void *ubuf)
{
/* It's kosher enough just to crash here, but there are some
existing NaCl tests that like to see EFAULT, and that's what
making the IRT call with NULL would give. */
if (__glibc_unlikely (ubuf == NULL))
{
__set_errno (EFAULT);
return -1;
}
switch (vers)
{
case _STAT_VER_NACL:
/* Nothing to do. The struct is in the form the NaCl ABI expects. */
*(struct nacl_abi_stat *) ubuf = *kbuf;
break;
case _STAT_VER_LINUX:
{
struct stat *buf = ubuf;
/* Zero-fill the pad/unused fields. */
memset (buf, 0, sizeof *buf);
/* Convert from NaCl IRT ABI `struct stat'. */
buf->st_dev = kbuf->nacl_abi_st_dev;
buf->st_ino = kbuf->nacl_abi_st_ino;
buf->st_mode = kbuf->nacl_abi_st_mode;
buf->st_nlink = kbuf->nacl_abi_st_nlink;
buf->st_uid = kbuf->nacl_abi_st_uid;
buf->st_gid = kbuf->nacl_abi_st_gid;
buf->st_rdev = kbuf->nacl_abi_st_rdev;
buf->st_size = kbuf->nacl_abi_st_size;
buf->st_blksize = kbuf->nacl_abi_st_blksize;
buf->st_blocks = kbuf->nacl_abi_st_blocks;
buf->st_atim.tv_sec = kbuf->nacl_abi_st_atime;
buf->st_atim.tv_nsec = kbuf->nacl_abi_st_atimensec;
buf->st_mtim.tv_sec = kbuf->nacl_abi_st_mtime;
buf->st_mtim.tv_nsec = kbuf->nacl_abi_st_mtimensec;
buf->st_ctim.tv_sec = kbuf->nacl_abi_st_ctime;
buf->st_ctim.tv_nsec = kbuf->nacl_abi_st_ctimensec;
}
break;
default:
__set_errno (EINVAL);
return -1;
}
return 0;
}
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