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tools/nolibc/types: split syscall-specific definitions into their own files
The macros and type definitions used by a number of syscalls were moved to types.h where they will be easier to maintain. A few of them are arch-specific and must not be moved there (e.g. O_*, sys_stat_struct). A warning about them was placed at the top of the file. Signed-off-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Willy Tarreau
Paul E. McKenney
parent
967cce191f
commit
cc7a492ad0
2 changed files with 135 additions and 108 deletions
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@ -94,7 +94,9 @@
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#include <linux/fs.h>
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#include <linux/loop.h>
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#include <linux/time.h>
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#include "types.h"
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/* Used by programs to avoid std includes */
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#define NOLIBC
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/* this way it will be removed if unused */
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@ -111,114 +113,6 @@ static int errno;
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*/
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#define MAX_ERRNO 4095
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/* for poll() */
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struct pollfd {
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int fd;
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short int events;
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short int revents;
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};
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/* for getdents64() */
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struct linux_dirent64 {
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uint64_t d_ino;
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int64_t d_off;
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unsigned short d_reclen;
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unsigned char d_type;
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char d_name[];
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};
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/* commonly an fd_set represents 256 FDs */
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#define FD_SETSIZE 256
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typedef struct { uint32_t fd32[FD_SETSIZE/32]; } fd_set;
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/* needed by wait4() */
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struct rusage {
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struct timeval ru_utime;
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struct timeval ru_stime;
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long ru_maxrss;
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long ru_ixrss;
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long ru_idrss;
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long ru_isrss;
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long ru_minflt;
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long ru_majflt;
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long ru_nswap;
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long ru_inblock;
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long ru_oublock;
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long ru_msgsnd;
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long ru_msgrcv;
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long ru_nsignals;
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long ru_nvcsw;
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long ru_nivcsw;
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};
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/* stat flags (WARNING, octal here) */
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#define S_IFDIR 0040000
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#define S_IFCHR 0020000
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#define S_IFBLK 0060000
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#define S_IFREG 0100000
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#define S_IFIFO 0010000
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#define S_IFLNK 0120000
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#define S_IFSOCK 0140000
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#define S_IFMT 0170000
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#define S_ISDIR(mode) (((mode) & S_IFDIR) == S_IFDIR)
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#define S_ISCHR(mode) (((mode) & S_IFCHR) == S_IFCHR)
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#define S_ISBLK(mode) (((mode) & S_IFBLK) == S_IFBLK)
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#define S_ISREG(mode) (((mode) & S_IFREG) == S_IFREG)
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#define S_ISFIFO(mode) (((mode) & S_IFIFO) == S_IFIFO)
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#define S_ISLNK(mode) (((mode) & S_IFLNK) == S_IFLNK)
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#define S_ISSOCK(mode) (((mode) & S_IFSOCK) == S_IFSOCK)
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#define DT_UNKNOWN 0
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#define DT_FIFO 1
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#define DT_CHR 2
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#define DT_DIR 4
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#define DT_BLK 6
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#define DT_REG 8
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#define DT_LNK 10
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#define DT_SOCK 12
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/* all the *at functions */
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#ifndef AT_FDCWD
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#define AT_FDCWD -100
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#endif
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/* lseek */
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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/* reboot */
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#define LINUX_REBOOT_MAGIC1 0xfee1dead
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#define LINUX_REBOOT_MAGIC2 0x28121969
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#define LINUX_REBOOT_CMD_HALT 0xcdef0123
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#define LINUX_REBOOT_CMD_POWER_OFF 0x4321fedc
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#define LINUX_REBOOT_CMD_RESTART 0x01234567
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#define LINUX_REBOOT_CMD_SW_SUSPEND 0xd000fce2
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/* The format of the struct as returned by the libc to the application, which
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* significantly differs from the format returned by the stat() syscall flavours.
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*/
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struct stat {
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dev_t st_dev; /* ID of device containing file */
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ino_t st_ino; /* inode number */
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mode_t st_mode; /* protection */
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nlink_t st_nlink; /* number of hard links */
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uid_t st_uid; /* user ID of owner */
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gid_t st_gid; /* group ID of owner */
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dev_t st_rdev; /* device ID (if special file) */
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off_t st_size; /* total size, in bytes */
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blksize_t st_blksize; /* blocksize for file system I/O */
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blkcnt_t st_blocks; /* number of 512B blocks allocated */
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time_t st_atime; /* time of last access */
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time_t st_mtime; /* time of last modification */
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time_t st_ctime; /* time of last status change */
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};
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#define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
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#define WIFEXITED(status) (((status) & 0x7f) == 0)
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/* Below comes the architecture-specific code. For each architecture, we have
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* the syscall declarations and the _start code definition. This is the only
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* global part. On all architectures the kernel puts everything in the stack
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133
tools/include/nolibc/types.h
Normal file
133
tools/include/nolibc/types.h
Normal file
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@ -0,0 +1,133 @@
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/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
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/*
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* Special types used by various syscalls for NOLIBC
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* Copyright (C) 2017-2021 Willy Tarreau <w@1wt.eu>
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*/
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#ifndef _NOLIBC_TYPES_H
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#define _NOLIBC_TYPES_H
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#include "std.h"
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#include <linux/time.h>
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/* Only the generic macros and types may be defined here. The arch-specific
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* ones such as the O_RDONLY and related macros used by fcntl() and open(), or
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* the layout of sys_stat_struct must not be defined here.
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*/
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/* stat flags (WARNING, octal here) */
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#define S_IFDIR 0040000
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#define S_IFCHR 0020000
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#define S_IFBLK 0060000
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#define S_IFREG 0100000
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#define S_IFIFO 0010000
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#define S_IFLNK 0120000
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#define S_IFSOCK 0140000
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#define S_IFMT 0170000
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#define S_ISDIR(mode) (((mode) & S_IFDIR) == S_IFDIR)
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#define S_ISCHR(mode) (((mode) & S_IFCHR) == S_IFCHR)
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#define S_ISBLK(mode) (((mode) & S_IFBLK) == S_IFBLK)
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#define S_ISREG(mode) (((mode) & S_IFREG) == S_IFREG)
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#define S_ISFIFO(mode) (((mode) & S_IFIFO) == S_IFIFO)
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#define S_ISLNK(mode) (((mode) & S_IFLNK) == S_IFLNK)
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#define S_ISSOCK(mode) (((mode) & S_IFSOCK) == S_IFSOCK)
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/* dirent types */
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#define DT_UNKNOWN 0x0
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#define DT_FIFO 0x1
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#define DT_CHR 0x2
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#define DT_DIR 0x4
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#define DT_BLK 0x6
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#define DT_REG 0x8
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#define DT_LNK 0xa
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#define DT_SOCK 0xc
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/* commonly an fd_set represents 256 FDs */
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#define FD_SETSIZE 256
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/* Special FD used by all the *at functions */
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#ifndef AT_FDCWD
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#define AT_FDCWD (-100)
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#endif
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/* whence values for lseek() */
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#define SEEK_SET 0
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#define SEEK_CUR 1
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#define SEEK_END 2
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/* cmd for reboot() */
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#define LINUX_REBOOT_MAGIC1 0xfee1dead
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#define LINUX_REBOOT_MAGIC2 0x28121969
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#define LINUX_REBOOT_CMD_HALT 0xcdef0123
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#define LINUX_REBOOT_CMD_POWER_OFF 0x4321fedc
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#define LINUX_REBOOT_CMD_RESTART 0x01234567
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#define LINUX_REBOOT_CMD_SW_SUSPEND 0xd000fce2
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/* Macros used on waitpid()'s return status */
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#define WEXITSTATUS(status) (((status) & 0xff00) >> 8)
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#define WIFEXITED(status) (((status) & 0x7f) == 0)
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/* for select() */
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typedef struct {
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uint32_t fd32[FD_SETSIZE / 32];
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} fd_set;
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/* for poll() */
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struct pollfd {
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int fd;
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short int events;
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short int revents;
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};
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/* for getdents64() */
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struct linux_dirent64 {
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uint64_t d_ino;
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int64_t d_off;
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unsigned short d_reclen;
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unsigned char d_type;
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char d_name[];
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};
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/* needed by wait4() */
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struct rusage {
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struct timeval ru_utime;
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struct timeval ru_stime;
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long ru_maxrss;
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long ru_ixrss;
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long ru_idrss;
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long ru_isrss;
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long ru_minflt;
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long ru_majflt;
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long ru_nswap;
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long ru_inblock;
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long ru_oublock;
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long ru_msgsnd;
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long ru_msgrcv;
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long ru_nsignals;
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long ru_nvcsw;
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long ru_nivcsw;
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};
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/* The format of the struct as returned by the libc to the application, which
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* significantly differs from the format returned by the stat() syscall flavours.
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*/
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struct stat {
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dev_t st_dev; /* ID of device containing file */
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ino_t st_ino; /* inode number */
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mode_t st_mode; /* protection */
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nlink_t st_nlink; /* number of hard links */
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uid_t st_uid; /* user ID of owner */
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gid_t st_gid; /* group ID of owner */
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dev_t st_rdev; /* device ID (if special file) */
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off_t st_size; /* total size, in bytes */
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blksize_t st_blksize; /* blocksize for file system I/O */
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blkcnt_t st_blocks; /* number of 512B blocks allocated */
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time_t st_atime; /* time of last access */
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time_t st_mtime; /* time of last modification */
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time_t st_ctime; /* time of last status change */
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};
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#endif /* _NOLIBC_TYPES_H */
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