| /* SPDX-License-Identifier: LGPL-2.1 OR MIT */ |
| /* |
| * Special types used by various syscalls for NOLIBC |
| * Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu> |
| */ |
| |
| #ifndef _NOLIBC_TYPES_H |
| #define _NOLIBC_TYPES_H |
| |
| #include "std.h" |
| #include <linux/time.h> |
| |
| |
| /* 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(), or |
| * the layout of sys_stat_struct must not be defined here. |
| */ |
| |
| /* stat flags (WARNING, octal here) */ |
| #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) |
| |
| /* 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 |
| |
| /* Special FD used by all the *at functions */ |
| #ifndef AT_FDCWD |
| #define AT_FDCWD (-100) |
| #endif |
| |
| /* whence values for lseek() */ |
| #define SEEK_SET 0 |
| #define SEEK_CUR 1 |
| #define SEEK_END 2 |
| |
| /* cmd for reboot() */ |
| #define LINUX_REBOOT_MAGIC1 0xfee1dead |
| #define LINUX_REBOOT_MAGIC2 0x28121969 |
| #define LINUX_REBOOT_CMD_HALT 0xcdef0123 |
| #define LINUX_REBOOT_CMD_POWER_OFF 0x4321fedc |
| #define LINUX_REBOOT_CMD_RESTART 0x01234567 |
| #define LINUX_REBOOT_CMD_SW_SUSPEND 0xd000fce2 |
| |
| /* Macros used on waitpid()'s return status */ |
| #define WEXITSTATUS(status) (((status) & 0xff00) >> 8) |
| #define WIFEXITED(status) (((status) & 0x7f) == 0) |
| |
| /* waitpid() flags */ |
| #define WNOHANG 1 |
| |
| /* 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[]; |
| }; |
| |
| /* needed by wait4() */ |
| struct rusage { |
| struct timeval ru_utime; |
| struct timeval ru_stime; |
| long ru_maxrss; |
| long ru_ixrss; |
| long ru_idrss; |
| long ru_isrss; |
| long ru_minflt; |
| long ru_majflt; |
| long ru_nswap; |
| long ru_inblock; |
| long ru_oublock; |
| long ru_msgsnd; |
| long ru_msgrcv; |
| long ru_nsignals; |
| long ru_nvcsw; |
| long ru_nivcsw; |
| }; |
| |
| /* 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 */ |
| time_t st_atime; /* time of last access */ |
| time_t st_mtime; /* time of last modification */ |
| time_t st_ctime; /* 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 */ |