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1/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
2/*
3 * Special types used by various syscalls for NOLIBC
4 * Copyright (C) 2017-2021 Willy Tarreau <[email protected]>
5 */
6
7/* make sure to include all global symbols */
8#include "nolibc.h"
9
10#ifndef _NOLIBC_TYPES_H
11#define _NOLIBC_TYPES_H
12
13#include "std.h"
14#include <linux/mman.h>
15#include <linux/stat.h>
16#include <linux/time_types.h>
17#include <linux/wait.h>
18
19struct timespec {
20 time_t tv_sec;
21 int64_t tv_nsec;
22};
23#define _STRUCT_TIMESPEC
24
25/* Never use with system calls */
26struct timeval {
27 time_t tv_sec;
28 int64_t tv_usec;
29};
30
31#define timeval __nolibc_kernel_timeval
32#include <linux/time.h>
33#undef timeval
34
35/* Only the generic macros and types may be defined here. The arch-specific
36 * ones such as the O_RDONLY and related macros used by fcntl() and open()
37 * must not be defined here.
38 */
39
40/* stat flags (WARNING, octal here). We need to check for an existing
41 * definition because linux/stat.h may omit to define those if it finds
42 * that any glibc header was already included.
43 */
44#if !defined(S_IFMT)
45#define S_IFDIR 0040000
46#define S_IFCHR 0020000
47#define S_IFBLK 0060000
48#define S_IFREG 0100000
49#define S_IFIFO 0010000
50#define S_IFLNK 0120000
51#define S_IFSOCK 0140000
52#define S_IFMT 0170000
53
54#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
55#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
56#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
57#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
58#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
59#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)
60#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
61
62#define S_IRWXU 00700
63#define S_IRUSR 00400
64#define S_IWUSR 00200
65#define S_IXUSR 00100
66
67#define S_IRWXG 00070
68#define S_IRGRP 00040
69#define S_IWGRP 00020
70#define S_IXGRP 00010
71
72#define S_IRWXO 00007
73#define S_IROTH 00004
74#define S_IWOTH 00002
75#define S_IXOTH 00001
76#endif
77
78/* dirent types */
79#define DT_UNKNOWN 0x0
80#define DT_FIFO 0x1
81#define DT_CHR 0x2
82#define DT_DIR 0x4
83#define DT_BLK 0x6
84#define DT_REG 0x8
85#define DT_LNK 0xa
86#define DT_SOCK 0xc
87
88/* PATH_MAX and MAXPATHLEN are often used and found with plenty of different
89 * values.
90 */
91#ifndef PATH_MAX
92#define PATH_MAX 4096
93#endif
94
95#ifndef MAXPATHLEN
96#define MAXPATHLEN (PATH_MAX)
97#endif
98
99/* flags for mmap */
100#ifndef MAP_FAILED
101#define MAP_FAILED ((void *)-1)
102#endif
103
104/* whence values for lseek() */
105#define SEEK_SET 0
106#define SEEK_CUR 1
107#define SEEK_END 2
108
109/* flags for reboot */
110#define RB_AUTOBOOT LINUX_REBOOT_CMD_RESTART
111#define RB_HALT_SYSTEM LINUX_REBOOT_CMD_HALT
112#define RB_ENABLE_CAD LINUX_REBOOT_CMD_CAD_ON
113#define RB_DISABLE_CAD LINUX_REBOOT_CMD_CAD_OFF
114#define RB_POWER_OFF LINUX_REBOOT_CMD_POWER_OFF
115#define RB_SW_SUSPEND LINUX_REBOOT_CMD_SW_SUSPEND
116#define RB_KEXEC LINUX_REBOOT_CMD_KEXEC
117
118/* Macros used on waitpid()'s return status */
119#define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
120#define WIFEXITED(status) (((status) & 0x7f) == 0)
121#define WTERMSIG(status) ((status) & 0x7f)
122#define WIFSIGNALED(status) ((status) - 1U < 0xff)
123
124/* standard exit() codes */
125#define EXIT_SUCCESS 0
126#define EXIT_FAILURE 1
127
128/* for getdents64() */
129struct linux_dirent64 {
130 uint64_t d_ino;
131 int64_t d_off;
132 unsigned short d_reclen;
133 unsigned char d_type;
134 char d_name[];
135};
136
137/* The format of the struct as returned by the libc to the application, which
138 * significantly differs from the format returned by the stat() syscall flavours.
139 */
140struct stat {
141 dev_t st_dev; /* ID of device containing file */
142 ino_t st_ino; /* inode number */
143 mode_t st_mode; /* protection */
144 nlink_t st_nlink; /* number of hard links */
145 uid_t st_uid; /* user ID of owner */
146 gid_t st_gid; /* group ID of owner */
147 dev_t st_rdev; /* device ID (if special file) */
148 off_t st_size; /* total size, in bytes */
149 blksize_t st_blksize; /* blocksize for file system I/O */
150 blkcnt_t st_blocks; /* number of 512B blocks allocated */
151 union { time_t st_atime; struct timespec st_atim; }; /* time of last access */
152 union { time_t st_mtime; struct timespec st_mtim; }; /* time of last modification */
153 union { time_t st_ctime; struct timespec st_ctim; }; /* time of last status change */
154};
155
156typedef __kernel_clockid_t clockid_t;
157typedef int timer_t;
158
159#ifndef container_of
160#define container_of(PTR, TYPE, FIELD) ({ \
161 __typeof__(((TYPE *)0)->FIELD) *__FIELD_PTR = (PTR); \
162 (TYPE *)((char *) __FIELD_PTR - offsetof(TYPE, FIELD)); \
163})
164#endif
165
166#endif /* _NOLIBC_TYPES_H */