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 <w@1wt.eu> 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.h> 17 #include <linux/wait.h> 18 19 20 /* Only the generic macros and types may be defined here. The arch-specific 21 * ones such as the O_RDONLY and related macros used by fcntl() and open() 22 * must not be defined here. 23 */ 24 25 /* stat flags (WARNING, octal here). We need to check for an existing 26 * definition because linux/stat.h may omit to define those if it finds 27 * that any glibc header was already included. 28 */ 29 #if !defined(S_IFMT) 30 #define S_IFDIR 0040000 31 #define S_IFCHR 0020000 32 #define S_IFBLK 0060000 33 #define S_IFREG 0100000 34 #define S_IFIFO 0010000 35 #define S_IFLNK 0120000 36 #define S_IFSOCK 0140000 37 #define S_IFMT 0170000 38 39 #define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) 40 #define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR) 41 #define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK) 42 #define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) 43 #define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO) 44 #define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK) 45 #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) 46 47 #define S_IRWXU 00700 48 #define S_IRUSR 00400 49 #define S_IWUSR 00200 50 #define S_IXUSR 00100 51 52 #define S_IRWXG 00070 53 #define S_IRGRP 00040 54 #define S_IWGRP 00020 55 #define S_IXGRP 00010 56 57 #define S_IRWXO 00007 58 #define S_IROTH 00004 59 #define S_IWOTH 00002 60 #define S_IXOTH 00001 61 #endif 62 63 /* dirent types */ 64 #define DT_UNKNOWN 0x0 65 #define DT_FIFO 0x1 66 #define DT_CHR 0x2 67 #define DT_DIR 0x4 68 #define DT_BLK 0x6 69 #define DT_REG 0x8 70 #define DT_LNK 0xa 71 #define DT_SOCK 0xc 72 73 /* PATH_MAX and MAXPATHLEN are often used and found with plenty of different 74 * values. 75 */ 76 #ifndef PATH_MAX 77 #define PATH_MAX 4096 78 #endif 79 80 #ifndef MAXPATHLEN 81 #define MAXPATHLEN (PATH_MAX) 82 #endif 83 84 /* flags for mmap */ 85 #ifndef MAP_FAILED 86 #define MAP_FAILED ((void *)-1) 87 #endif 88 89 /* whence values for lseek() */ 90 #define SEEK_SET 0 91 #define SEEK_CUR 1 92 #define SEEK_END 2 93 94 /* flags for reboot */ 95 #define RB_AUTOBOOT LINUX_REBOOT_CMD_RESTART 96 #define RB_HALT_SYSTEM LINUX_REBOOT_CMD_HALT 97 #define RB_ENABLE_CAD LINUX_REBOOT_CMD_CAD_ON 98 #define RB_DISABLE_CAD LINUX_REBOOT_CMD_CAD_OFF 99 #define RB_POWER_OFF LINUX_REBOOT_CMD_POWER_OFF 100 #define RB_SW_SUSPEND LINUX_REBOOT_CMD_SW_SUSPEND 101 #define RB_KEXEC LINUX_REBOOT_CMD_KEXEC 102 103 /* Macros used on waitpid()'s return status */ 104 #define WEXITSTATUS(status) (((status) & 0xff00) >> 8) 105 #define WIFEXITED(status) (((status) & 0x7f) == 0) 106 #define WTERMSIG(status) ((status) & 0x7f) 107 #define WIFSIGNALED(status) ((status) - 1 < 0xff) 108 109 /* standard exit() codes */ 110 #define EXIT_SUCCESS 0 111 #define EXIT_FAILURE 1 112 113 /* for getdents64() */ 114 struct linux_dirent64 { 115 uint64_t d_ino; 116 int64_t d_off; 117 unsigned short d_reclen; 118 unsigned char d_type; 119 char d_name[]; 120 }; 121 122 /* The format of the struct as returned by the libc to the application, which 123 * significantly differs from the format returned by the stat() syscall flavours. 124 */ 125 struct stat { 126 dev_t st_dev; /* ID of device containing file */ 127 ino_t st_ino; /* inode number */ 128 mode_t st_mode; /* protection */ 129 nlink_t st_nlink; /* number of hard links */ 130 uid_t st_uid; /* user ID of owner */ 131 gid_t st_gid; /* group ID of owner */ 132 dev_t st_rdev; /* device ID (if special file) */ 133 off_t st_size; /* total size, in bytes */ 134 blksize_t st_blksize; /* blocksize for file system I/O */ 135 blkcnt_t st_blocks; /* number of 512B blocks allocated */ 136 union { time_t st_atime; struct timespec st_atim; }; /* time of last access */ 137 union { time_t st_mtime; struct timespec st_mtim; }; /* time of last modification */ 138 union { time_t st_ctime; struct timespec st_ctim; }; /* time of last status change */ 139 }; 140 141 typedef __kernel_clockid_t clockid_t; 142 typedef int timer_t; 143 144 #ifndef container_of 145 #define container_of(PTR, TYPE, FIELD) ({ \ 146 __typeof__(((TYPE *)0)->FIELD) *__FIELD_PTR = (PTR); \ 147 (TYPE *)((char *) __FIELD_PTR - offsetof(TYPE, FIELD)); \ 148 }) 149 #endif 150 151 #endif /* _NOLIBC_TYPES_H */ 152