stat.h

 1/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
 2/*
 3 * stat definition for NOLIBC
 4 * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
 5 */
 6
 7/* make sure to include all global symbols */
 8#include "../nolibc.h"
 9
10#ifndef _NOLIBC_SYS_STAT_H
11#define _NOLIBC_SYS_STAT_H
12
13#include "../arch.h"
14#include "../types.h"
15#include "../sys.h"
16
17/*
18 * int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf);
19 * int stat(const char *path, struct stat *buf);
20 * int fstatat(int fd, const char *path, struct stat *buf, int flag);
21 * int fstat(int fildes, struct stat *buf);
22 * int lstat(const char *path, struct stat *buf);
23 */
24
25static __attribute__((unused))
26int sys_statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)
27{
28#ifdef __NR_statx
29	return my_syscall5(__NR_statx, fd, path, flags, mask, buf);
30#else
31	return __nolibc_enosys(__func__, fd, path, flags, mask, buf);
32#endif
33}
34
35static __attribute__((unused))
36int statx(int fd, const char *path, int flags, unsigned int mask, struct statx *buf)
37{
38	return __sysret(sys_statx(fd, path, flags, mask, buf));
39}
40
41
42static __attribute__((unused))
43int fstatat(int fd, const char *path, struct stat *buf, int flag)
44{
45	struct statx statx;
46	long ret;
47
48	ret = __sysret(sys_statx(fd, path, flag | AT_NO_AUTOMOUNT, STATX_BASIC_STATS, &statx));
49	if (ret == -1)
50		return ret;
51
52	buf->st_dev          = ((statx.stx_dev_minor & 0xff)
53			       | (statx.stx_dev_major << 8)
54			       | ((statx.stx_dev_minor & ~0xff) << 12));
55	buf->st_ino          = statx.stx_ino;
56	buf->st_mode         = statx.stx_mode;
57	buf->st_nlink        = statx.stx_nlink;
58	buf->st_uid          = statx.stx_uid;
59	buf->st_gid          = statx.stx_gid;
60	buf->st_rdev         = ((statx.stx_rdev_minor & 0xff)
61			       | (statx.stx_rdev_major << 8)
62			       | ((statx.stx_rdev_minor & ~0xff) << 12));
63	buf->st_size         = statx.stx_size;
64	buf->st_blksize      = statx.stx_blksize;
65	buf->st_blocks       = statx.stx_blocks;
66	buf->st_atim.tv_sec  = statx.stx_atime.tv_sec;
67	buf->st_atim.tv_nsec = statx.stx_atime.tv_nsec;
68	buf->st_mtim.tv_sec  = statx.stx_mtime.tv_sec;
69	buf->st_mtim.tv_nsec = statx.stx_mtime.tv_nsec;
70	buf->st_ctim.tv_sec  = statx.stx_ctime.tv_sec;
71	buf->st_ctim.tv_nsec = statx.stx_ctime.tv_nsec;
72
73	return 0;
74}
75
76static __attribute__((unused))
77int stat(const char *path, struct stat *buf)
78{
79	return fstatat(AT_FDCWD, path, buf, 0);
80}
81
82static __attribute__((unused))
83int fstat(int fildes, struct stat *buf)
84{
85	return fstatat(fildes, "", buf, AT_EMPTY_PATH);
86}
87
88static __attribute__((unused))
89int lstat(const char *path, struct stat *buf)
90{
91	return fstatat(AT_FDCWD, path, buf, AT_SYMLINK_NOFOLLOW);
92}
93
94#endif /* _NOLIBC_SYS_STAT_H */