/* SPDX-License-Identifier: LGPL-2.1 OR MIT */ /* * Special types used by various syscalls for NOLIBC * Copyright (C) 2017-2021 Willy Tarreau */ #ifndef _NOLIBC_TYPES_H #define _NOLIBC_TYPES_H #include "std.h" #include #include /* for LINUX_REBOOT_* */ #include #include #include #include /* Only the generic macros and types may be defined here. The arch-specific * ones such as the O_RDONLY and related macros used by fcntl() and open() * must not be defined here. */ /* stat flags (WARNING, octal here). We need to check for an existing * definition because linux/stat.h may omit to define those if it finds * that any glibc header was already included. */ #if !defined(S_IFMT) #define S_IFDIR 0040000 #define S_IFCHR 0020000 #define S_IFBLK 0060000 #define S_IFREG 0100000 #define S_IFIFO 0010000 #define S_IFLNK 0120000 #define S_IFSOCK 0140000 #define S_IFMT 0170000 #define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) #define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR) #define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK) #define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) #define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO) #define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK) #define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) #define S_IRWXU 00700 #define S_IRUSR 00400 #define S_IWUSR 00200 #define S_IXUSR 00100 #define S_IRWXG 00070 #define S_IRGRP 00040 #define S_IWGRP 00020 #define S_IXGRP 00010 #define S_IRWXO 00007 #define S_IROTH 00004 #define S_IWOTH 00002 #define S_IXOTH 00001 #endif /* dirent types */ #define DT_UNKNOWN 0x0 #define DT_FIFO 0x1 #define DT_CHR 0x2 #define DT_DIR 0x4 #define DT_BLK 0x6 #define DT_REG 0x8 #define DT_LNK 0xa #define DT_SOCK 0xc /* commonly an fd_set represents 256 FDs */ #ifndef FD_SETSIZE #define FD_SETSIZE 256 #endif /* PATH_MAX and MAXPATHLEN are often used and found with plenty of different * values. */ #ifndef PATH_MAX #define PATH_MAX 4096 #endif #ifndef MAXPATHLEN #define MAXPATHLEN (PATH_MAX) #endif /* flags for mmap */ #ifndef MAP_FAILED #define MAP_FAILED ((void *)-1) #endif /* whence values for lseek() */ #define SEEK_SET 0 #define SEEK_CUR 1 #define SEEK_END 2 /* flags for reboot */ #define RB_AUTOBOOT LINUX_REBOOT_CMD_RESTART #define RB_HALT_SYSTEM LINUX_REBOOT_CMD_HALT #define RB_ENABLE_CAD LINUX_REBOOT_CMD_CAD_ON #define RB_DISABLE_CAD LINUX_REBOOT_CMD_CAD_OFF #define RB_POWER_OFF LINUX_REBOOT_CMD_POWER_OFF #define RB_SW_SUSPEND LINUX_REBOOT_CMD_SW_SUSPEND #define RB_KEXEC LINUX_REBOOT_CMD_KEXEC /* Macros used on waitpid()'s return status */ #define WEXITSTATUS(status) (((status) & 0xff00) >> 8) #define WIFEXITED(status) (((status) & 0x7f) == 0) #define WTERMSIG(status) ((status) & 0x7f) #define WIFSIGNALED(status) ((status) - 1 < 0xff) /* standard exit() codes */ #define EXIT_SUCCESS 0 #define EXIT_FAILURE 1 #define FD_SETIDXMASK (8 * sizeof(unsigned long)) #define FD_SETBITMASK (8 * sizeof(unsigned long)-1) /* for select() */ typedef struct { unsigned long fds[(FD_SETSIZE + FD_SETBITMASK) / FD_SETIDXMASK]; } fd_set; #define FD_CLR(fd, set) do { \ fd_set *__set = (set); \ int __fd = (fd); \ if (__fd >= 0) \ __set->fds[__fd / FD_SETIDXMASK] &= \ ~(1U << (__fd & FX_SETBITMASK)); \ } while (0) #define FD_SET(fd, set) do { \ fd_set *__set = (set); \ int __fd = (fd); \ if (__fd >= 0) \ __set->fds[__fd / FD_SETIDXMASK] |= \ 1 << (__fd & FD_SETBITMASK); \ } while (0) #define FD_ISSET(fd, set) ({ \ fd_set *__set = (set); \ int __fd = (fd); \ int __r = 0; \ if (__fd >= 0) \ __r = !!(__set->fds[__fd / FD_SETIDXMASK] & \ 1U << (__fd & FD_SET_BITMASK)); \ __r; \ }) #define FD_ZERO(set) do { \ fd_set *__set = (set); \ int __idx; \ int __size = (FD_SETSIZE+FD_SETBITMASK) / FD_SETIDXMASK;\ for (__idx = 0; __idx < __size; __idx++) \ __set->fds[__idx] = 0; \ } while (0) /* for poll() */ #define POLLIN 0x0001 #define POLLPRI 0x0002 #define POLLOUT 0x0004 #define POLLERR 0x0008 #define POLLHUP 0x0010 #define POLLNVAL 0x0020 struct pollfd { int fd; short int events; short int revents; }; /* for getdents64() */ struct linux_dirent64 { uint64_t d_ino; int64_t d_off; unsigned short d_reclen; unsigned char d_type; char d_name[]; }; /* The format of the struct as returned by the libc to the application, which * significantly differs from the format returned by the stat() syscall flavours. */ struct stat { dev_t st_dev; /* ID of device containing file */ ino_t st_ino; /* inode number */ mode_t st_mode; /* protection */ nlink_t st_nlink; /* number of hard links */ uid_t st_uid; /* user ID of owner */ gid_t st_gid; /* group ID of owner */ dev_t st_rdev; /* device ID (if special file) */ off_t st_size; /* total size, in bytes */ blksize_t st_blksize; /* blocksize for file system I/O */ blkcnt_t st_blocks; /* number of 512B blocks allocated */ union { time_t st_atime; struct timespec st_atim; }; /* time of last access */ union { time_t st_mtime; struct timespec st_mtim; }; /* time of last modification */ union { time_t st_ctime; struct timespec st_ctim; }; /* time of last status change */ }; /* WARNING, it only deals with the 4096 first majors and 256 first minors */ #define makedev(major, minor) ((dev_t)((((major) & 0xfff) << 8) | ((minor) & 0xff))) #define major(dev) ((unsigned int)(((dev) >> 8) & 0xfff)) #define minor(dev) ((unsigned int)(((dev) & 0xff)) #ifndef offsetof #define offsetof(TYPE, FIELD) ((size_t) &((TYPE *)0)->FIELD) #endif #ifndef container_of #define container_of(PTR, TYPE, FIELD) ({ \ __typeof__(((TYPE *)0)->FIELD) *__FIELD_PTR = (PTR); \ (TYPE *)((char *) __FIELD_PTR - offsetof(TYPE, FIELD)); \ }) #endif /* make sure to include all global symbols */ #include "nolibc.h" #endif /* _NOLIBC_TYPES_H */