tools/include/nolibc/types.h - linux - Git at Google

 /* 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>
 #include <linux/stat.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). 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

 /* 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)
 #define WTERMSIG(status)    ((status) & 0x7f)
 #define WIFSIGNALED(status) ((status) - 1 < 0xff)

 /* 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 */
	/* 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>
	#include <linux/stat.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). 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

	/* 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)
	#define WTERMSIG(status) ((status) & 0x7f)
	#define WIFSIGNALED(status) ((status) - 1 < 0xff)

	/* 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 */