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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/include/nolibc/sys/stat.h
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/* SPDX-License-Identifier: LGPL-2.1 OR MIT */

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/*

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 * stat definition for NOLIBC

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 * Copyright (C) 2017-2021 Willy Tarreau <[email protected]>

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 */

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/* make sure to include all global symbols */

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#include "../nolibc.h"

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#ifndef _NOLIBC_SYS_STAT_H

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#define _NOLIBC_SYS_STAT_H

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#include "../arch.h"

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#include "../types.h"

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#include "../sys.h"

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/*

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 * int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf);

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 * int stat(const char *path, struct stat *buf);

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 * int fstatat(int fd, const char *path, struct stat *buf, int flag);

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 * int fstat(int fildes, struct stat *buf);

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 * int lstat(const char *path, struct stat *buf);

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 */

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static __attribute__((unused))

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int sys_statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)

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{

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#ifdef __NR_statx

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	return my_syscall5(__NR_statx, fd, path, flags, mask, buf);

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#else

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	return __nolibc_enosys(__func__, fd, path, flags, mask, buf);

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#endif

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}

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static __attribute__((unused))

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int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)

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{

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	return __sysret(sys_statx(fd, path, flags, mask, buf));

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}

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static __attribute__((unused))

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int fstatat(int fd, const char *path, struct stat *buf, int flag)

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{

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	struct statx statx;

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	long ret;

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	ret = __sysret(sys_statx(fd, path, flag | AT_NO_AUTOMOUNT, STATX_BASIC_STATS, &statx));

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	if (ret == -1)

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		return ret;

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	buf->st_dev          = ((statx.stx_dev_minor & 0xff)

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			       | (statx.stx_dev_major << 8)

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			       | ((statx.stx_dev_minor & ~0xff) << 12));

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	buf->st_ino          = statx.stx_ino;

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	buf->st_mode         = statx.stx_mode;

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	buf->st_nlink        = statx.stx_nlink;

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	buf->st_uid          = statx.stx_uid;

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	buf->st_gid          = statx.stx_gid;

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	buf->st_rdev         = ((statx.stx_rdev_minor & 0xff)

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			       | (statx.stx_rdev_major << 8)

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			       | ((statx.stx_rdev_minor & ~0xff) << 12));

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	buf->st_size         = statx.stx_size;

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	buf->st_blksize      = statx.stx_blksize;

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	buf->st_blocks       = statx.stx_blocks;

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	buf->st_atim.tv_sec  = statx.stx_atime.tv_sec;

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	buf->st_atim.tv_nsec = statx.stx_atime.tv_nsec;

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	buf->st_mtim.tv_sec  = statx.stx_mtime.tv_sec;

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	buf->st_mtim.tv_nsec = statx.stx_mtime.tv_nsec;

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	buf->st_ctim.tv_sec  = statx.stx_ctime.tv_sec;

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	buf->st_ctim.tv_nsec = statx.stx_ctime.tv_nsec;

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	return 0;

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}

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static __attribute__((unused))

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int stat(const char *path, struct stat *buf)

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{

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	return fstatat(AT_FDCWD, path, buf, 0);

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}

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static __attribute__((unused))

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int fstat(int fildes, struct stat *buf)

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{

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	return fstatat(fildes, "", buf, AT_EMPTY_PATH);

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}

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static __attribute__((unused))

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int lstat(const char *path, struct stat *buf)

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{

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	return fstatat(AT_FDCWD, path, buf, AT_SYMLINK_NOFOLLOW);

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}

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#endif /* _NOLIBC_SYS_STAT_H */

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