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/* 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_IFDIR) == S_IFDIR)
#define S_ISCHR(mode) (((mode) & S_IFCHR) == S_IFCHR)
#define S_ISBLK(mode) (((mode) & S_IFBLK) == S_IFBLK)
#define S_ISREG(mode) (((mode) & S_IFREG) == S_IFREG)
#define S_ISFIFO(mode) (((mode) & S_IFIFO) == S_IFIFO)
#define S_ISLNK(mode) (((mode) & S_IFLNK) == S_IFLNK)
#define S_ISSOCK(mode) (((mode) & S_IFSOCK) == 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
#endif /* _NOLIBC_TYPES_H */
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