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/*
* Copyright (C) 2015 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
struct kernel_stat {
unsigned int st_dev;
unsigned int st_pad0[3];
unsigned long st_ino;
mode_t st_mode;
__u32 st_nlink;
uid_t st_uid;
gid_t st_gid;
unsigned int st_rdev;
unsigned int st_pad1[3];
__kernel_off_t st_size;
unsigned int _st_atime;
unsigned int st_atime_nsec;
unsigned int _st_mtime;
unsigned int st_mtime_nsec;
unsigned int _st_ctime;
unsigned int st_ctime_nsec;
unsigned int st_blksize;
unsigned int st_pad2;
unsigned long st_blocks;
};
void copy_stat(struct stat *st, struct kernel_stat *s)
{
st->st_dev = static_cast<dev_t>(s->st_dev);
st->st_ino = static_cast<ino_t>(s->st_ino);
st->st_mode = static_cast<mode_t>(s->st_mode);
st->st_nlink = static_cast<nlink_t>(s->st_nlink);
st->st_uid = static_cast<uid_t>(s->st_uid);
st->st_gid = static_cast<gid_t>(s->st_gid);
st->st_rdev = static_cast<dev_t>(s->st_rdev);
st->st_size = static_cast<off_t>(s->st_size);
st->st_blksize = static_cast<int>(s->st_blksize);
st->st_blocks = static_cast<long>(s->st_blocks);
st->st_atim.tv_sec = static_cast<time_t>(s->_st_atime);
st->st_atim.tv_nsec = static_cast<long>(s->st_atime_nsec);
st->st_mtim.tv_sec = static_cast<time_t>(s->_st_mtime);
st->st_mtim.tv_nsec = static_cast<long>(s->st_mtime_nsec);
st->st_ctim.tv_sec = static_cast<time_t>(s->_st_ctime);
st->st_ctim.tv_nsec = static_cast<long>(s->st_ctime_nsec);
}
int fstat(int fp, struct stat *st)
{
kernel_stat s;
int ret;
ret = syscall (__NR_fstat, fp, &s);
copy_stat (st, &s);
return ret;
}
__strong_alias(fstat64, fstat);
int newfstatat(int dirfd, const char *pathname, struct stat *buf, int flags)
{
kernel_stat s;
int ret;
ret = syscall(__NR_newfstatat, dirfd, pathname, &s, flags);
copy_stat(buf, &s);
return ret;
}
int fstatat(int dirfd, const char *pathname, struct stat *buf, int flags)
{
kernel_stat s;
int ret;
ret = syscall(__NR_newfstatat, dirfd, pathname, &s, flags);
copy_stat(buf, &s);
return ret;
}
__strong_alias(fstatat64, fstatat);
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