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77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/* Convert between the NaCl ABI's `struct stat' format, and libc's.
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Copyright (C) 2015-2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <string.h>
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#include <sys/stat.h>
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#include <xstatconv.h>
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internal_function
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int
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__xstat_conv (int vers, const struct nacl_abi_stat *kbuf, void *ubuf)
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{
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/* It's kosher enough just to crash here, but there are some
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existing NaCl tests that like to see EFAULT, and that's what
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making the IRT call with NULL would give. */
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if (__glibc_unlikely (ubuf == NULL))
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{
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__set_errno (EFAULT);
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return -1;
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}
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switch (vers)
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{
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case _STAT_VER_NACL:
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/* Nothing to do. The struct is in the form the NaCl ABI expects. */
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*(struct nacl_abi_stat *) ubuf = *kbuf;
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break;
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case _STAT_VER_LINUX:
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{
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struct stat *buf = ubuf;
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/* Zero-fill the pad/unused fields. */
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memset (buf, 0, sizeof *buf);
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/* Convert from NaCl IRT ABI `struct stat'. */
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buf->st_dev = kbuf->nacl_abi_st_dev;
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buf->st_ino = kbuf->nacl_abi_st_ino;
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buf->st_mode = kbuf->nacl_abi_st_mode;
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buf->st_nlink = kbuf->nacl_abi_st_nlink;
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buf->st_uid = kbuf->nacl_abi_st_uid;
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buf->st_gid = kbuf->nacl_abi_st_gid;
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buf->st_rdev = kbuf->nacl_abi_st_rdev;
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buf->st_size = kbuf->nacl_abi_st_size;
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buf->st_blksize = kbuf->nacl_abi_st_blksize;
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buf->st_blocks = kbuf->nacl_abi_st_blocks;
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buf->st_atim.tv_sec = kbuf->nacl_abi_st_atime;
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buf->st_atim.tv_nsec = kbuf->nacl_abi_st_atimensec;
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buf->st_mtim.tv_sec = kbuf->nacl_abi_st_mtime;
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buf->st_mtim.tv_nsec = kbuf->nacl_abi_st_mtimensec;
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buf->st_ctim.tv_sec = kbuf->nacl_abi_st_ctime;
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buf->st_ctim.tv_nsec = kbuf->nacl_abi_st_ctimensec;
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}
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break;
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default:
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__set_errno (EINVAL);
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return -1;
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}
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return 0;
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}
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