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_types.h> 17 #include <linux/wait.h> 18 19 struct timespec { 20 time_t tv_sec; 21 int64_t tv_nsec; 22 }; 23 #define _STRUCT_TIMESPEC 24 25 /* Never use with system calls */ 26 struct 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) - 1 < 0xff) 123 124 /* standard exit() codes */ 125 #define EXIT_SUCCESS 0 126 #define EXIT_FAILURE 1 127 128 /* for getdents64() */ 129 struct 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 */ 140 struct 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 }; 155 156 typedef __kernel_clockid_t clockid_t; 157 typedef 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 */ 167