mirror of
https://github.com/rwinkhart/sys.git
synced 2026-08-31 22:36:44 -04:00
Kir Kolyshkin
9109b7679e
Add IoctlRetInt() for ioctls that use syscall's return value as an output parameter. Add a unit test for Linux, and the NS_GET_ defines that it requires (see ioctl_ns(2)). Motivation: Currently, x/sys/unix provides a few functions to deal with ioctls. In particular, IoctlGetInt(), which "performs an ioctl operation which gets an integer value". It does that by passing a pointer to an integer to a syscall and returning that integer. The value returned from syscall is treated as success/failure flag (0 means success, -1 means failure, and in such case errno is used to figure out the underlying error). It appears that there are a few ioctls in Linux and at least one in Solaris, which do not use the above way to return an int, instead they use the syscall's return value (in case it's not negative). As Linux ioctl(2) man page says, > RETURN VALUE > Usually, on success zero is returned. A few ioctl() requests > use the return value as an output parameter and return > a nonnegative value on success. On error, -1 is returned, > and errno is set appropriately. Currently I am aware of at least 6 Linux ioctls that do that (return the value directly): * LOOP_CTL_* ioctls on /dev/loop-control (all 3 of them). Source: loop(4) * NS_* ioctls (3 out of 4) on /proc/PID/ns/*. Source: ioctl_ns(2) And one in Solaris: * I_FIND ioctl, source: streamio(7i). There might be some more ioctls like the ones above, but since ioctls are scarcely documented, it is hard to say how many more. Obviously, using IoctlGetInt() for such ioctls would be a big mistake, as 0 will always be returned. For example, there was a bug in Docker's pkg/loopback (moby/moby#39801). [v6: make it linux-specific for now] Fixes golang/go#33966 Change-Id: Ie64f72fd84101b955ba14519a357e06a66d685d0 Reviewed-on: https://go-review.googlesource.com/c/sys/+/192780 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
669 lines
16 KiB
Bash
Executable File
669 lines
16 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# Copyright 2009 The Go Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style
|
|
# license that can be found in the LICENSE file.
|
|
|
|
# Generate Go code listing errors and other #defined constant
|
|
# values (ENAMETOOLONG etc.), by asking the preprocessor
|
|
# about the definitions.
|
|
|
|
unset LANG
|
|
export LC_ALL=C
|
|
export LC_CTYPE=C
|
|
|
|
if test -z "$GOARCH" -o -z "$GOOS"; then
|
|
echo 1>&2 "GOARCH or GOOS not defined in environment"
|
|
exit 1
|
|
fi
|
|
|
|
# Check that we are using the new build system if we should
|
|
if [[ "$GOOS" = "linux" ]] && [[ "$GOLANG_SYS_BUILD" != "docker" ]]; then
|
|
echo 1>&2 "In the Docker based build system, mkerrors should not be called directly."
|
|
echo 1>&2 "See README.md"
|
|
exit 1
|
|
fi
|
|
|
|
if [[ "$GOOS" = "aix" ]]; then
|
|
CC=${CC:-gcc}
|
|
else
|
|
CC=${CC:-cc}
|
|
fi
|
|
|
|
if [[ "$GOOS" = "solaris" ]]; then
|
|
# Assumes GNU versions of utilities in PATH.
|
|
export PATH=/usr/gnu/bin:$PATH
|
|
fi
|
|
|
|
uname=$(uname)
|
|
|
|
includes_AIX='
|
|
#include <net/if.h>
|
|
#include <net/netopt.h>
|
|
#include <netinet/ip_mroute.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/stropts.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/poll.h>
|
|
#include <sys/termio.h>
|
|
#include <termios.h>
|
|
#include <fcntl.h>
|
|
|
|
#define AF_LOCAL AF_UNIX
|
|
'
|
|
|
|
includes_Darwin='
|
|
#define _DARWIN_C_SOURCE
|
|
#define KERNEL
|
|
#define _DARWIN_USE_64_BIT_INODE
|
|
#include <stdint.h>
|
|
#include <sys/attr.h>
|
|
#include <sys/types.h>
|
|
#include <sys/event.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/utsname.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/xattr.h>
|
|
#include <net/bpf.h>
|
|
#include <net/if.h>
|
|
#include <net/if_types.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/ip.h>
|
|
#include <termios.h>
|
|
'
|
|
|
|
includes_DragonFly='
|
|
#include <sys/types.h>
|
|
#include <sys/event.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/ioctl.h>
|
|
#include <net/bpf.h>
|
|
#include <net/if.h>
|
|
#include <net/if_types.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <termios.h>
|
|
#include <netinet/ip.h>
|
|
#include <net/ip_mroute/ip_mroute.h>
|
|
'
|
|
|
|
includes_FreeBSD='
|
|
#include <sys/capsicum.h>
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/event.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/ioctl.h>
|
|
#include <net/bpf.h>
|
|
#include <net/if.h>
|
|
#include <net/if_types.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <termios.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_mroute.h>
|
|
#include <sys/extattr.h>
|
|
|
|
#if __FreeBSD__ >= 10
|
|
#define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10
|
|
#undef SIOCAIFADDR
|
|
#define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data
|
|
#undef SIOCSIFPHYADDR
|
|
#define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data
|
|
#endif
|
|
'
|
|
|
|
includes_Linux='
|
|
#define _LARGEFILE_SOURCE
|
|
#define _LARGEFILE64_SOURCE
|
|
#ifndef __LP64__
|
|
#define _FILE_OFFSET_BITS 64
|
|
#endif
|
|
#define _GNU_SOURCE
|
|
|
|
// <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of
|
|
// these structures. We just include them copied from <bits/termios.h>.
|
|
#if defined(__powerpc__)
|
|
struct sgttyb {
|
|
char sg_ispeed;
|
|
char sg_ospeed;
|
|
char sg_erase;
|
|
char sg_kill;
|
|
short sg_flags;
|
|
};
|
|
|
|
struct tchars {
|
|
char t_intrc;
|
|
char t_quitc;
|
|
char t_startc;
|
|
char t_stopc;
|
|
char t_eofc;
|
|
char t_brkc;
|
|
};
|
|
|
|
struct ltchars {
|
|
char t_suspc;
|
|
char t_dsuspc;
|
|
char t_rprntc;
|
|
char t_flushc;
|
|
char t_werasc;
|
|
char t_lnextc;
|
|
};
|
|
#endif
|
|
|
|
#include <bits/sockaddr.h>
|
|
#include <sys/epoll.h>
|
|
#include <sys/eventfd.h>
|
|
#include <sys/inotify.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/prctl.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/signalfd.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/xattr.h>
|
|
#include <linux/bpf.h>
|
|
#include <linux/capability.h>
|
|
#include <linux/errqueue.h>
|
|
#include <linux/if.h>
|
|
#include <linux/if_alg.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/if_ppp.h>
|
|
#include <linux/if_tun.h>
|
|
#include <linux/if_packet.h>
|
|
#include <linux/if_addr.h>
|
|
#include <linux/falloc.h>
|
|
#include <linux/fanotify.h>
|
|
#include <linux/filter.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/kexec.h>
|
|
#include <linux/keyctl.h>
|
|
#include <linux/loop.h>
|
|
#include <linux/magic.h>
|
|
#include <linux/memfd.h>
|
|
#include <linux/module.h>
|
|
#include <linux/netfilter/nfnetlink.h>
|
|
#include <linux/netlink.h>
|
|
#include <linux/net_namespace.h>
|
|
#include <linux/nsfs.h>
|
|
#include <linux/perf_event.h>
|
|
#include <linux/random.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/rtnetlink.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/seccomp.h>
|
|
#include <linux/sockios.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/icmpv6.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/can.h>
|
|
#include <linux/vm_sockets.h>
|
|
#include <linux/taskstats.h>
|
|
#include <linux/genetlink.h>
|
|
#include <linux/watchdog.h>
|
|
#include <linux/hdreg.h>
|
|
#include <linux/rtc.h>
|
|
#include <linux/if_xdp.h>
|
|
#include <linux/cryptouser.h>
|
|
#include <mtd/ubi-user.h>
|
|
#include <net/route.h>
|
|
|
|
#if defined(__sparc__)
|
|
// On sparc{,64}, the kernel defines struct termios2 itself which clashes with the
|
|
// definition in glibc. As only the error constants are needed here, include the
|
|
// generic termibits.h (which is included by termbits.h on sparc).
|
|
#include <asm-generic/termbits.h>
|
|
#else
|
|
#include <asm/termbits.h>
|
|
#endif
|
|
|
|
#ifndef MSG_FASTOPEN
|
|
#define MSG_FASTOPEN 0x20000000
|
|
#endif
|
|
|
|
#ifndef PTRACE_GETREGS
|
|
#define PTRACE_GETREGS 0xc
|
|
#endif
|
|
|
|
#ifndef PTRACE_SETREGS
|
|
#define PTRACE_SETREGS 0xd
|
|
#endif
|
|
|
|
#ifndef SOL_NETLINK
|
|
#define SOL_NETLINK 270
|
|
#endif
|
|
|
|
#ifdef SOL_BLUETOOTH
|
|
// SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
|
|
// but it is already in bluetooth_linux.go
|
|
#undef SOL_BLUETOOTH
|
|
#endif
|
|
|
|
// Certain constants are missing from the fs/crypto UAPI
|
|
#define FS_KEY_DESC_PREFIX "fscrypt:"
|
|
#define FS_KEY_DESC_PREFIX_SIZE 8
|
|
#define FS_MAX_KEY_SIZE 64
|
|
'
|
|
|
|
includes_NetBSD='
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/event.h>
|
|
#include <sys/extattr.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/termios.h>
|
|
#include <sys/ttycom.h>
|
|
#include <sys/wait.h>
|
|
#include <net/bpf.h>
|
|
#include <net/if.h>
|
|
#include <net/if_types.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_mroute.h>
|
|
#include <netinet/if_ether.h>
|
|
|
|
// Needed since <sys/param.h> refers to it...
|
|
#define schedppq 1
|
|
'
|
|
|
|
includes_OpenBSD='
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/event.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/termios.h>
|
|
#include <sys/ttycom.h>
|
|
#include <sys/unistd.h>
|
|
#include <sys/wait.h>
|
|
#include <net/bpf.h>
|
|
#include <net/if.h>
|
|
#include <net/if_types.h>
|
|
#include <net/if_var.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_mroute.h>
|
|
#include <netinet/if_ether.h>
|
|
#include <net/if_bridge.h>
|
|
|
|
// We keep some constants not supported in OpenBSD 5.5 and beyond for
|
|
// the promise of compatibility.
|
|
#define EMUL_ENABLED 0x1
|
|
#define EMUL_NATIVE 0x2
|
|
#define IPV6_FAITH 0x1d
|
|
#define IPV6_OPTIONS 0x1
|
|
#define IPV6_RTHDR_STRICT 0x1
|
|
#define IPV6_SOCKOPT_RESERVED1 0x3
|
|
#define SIOCGIFGENERIC 0xc020693a
|
|
#define SIOCSIFGENERIC 0x80206939
|
|
#define WALTSIG 0x4
|
|
'
|
|
|
|
includes_SunOS='
|
|
#include <limits.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/sockio.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mkdev.h>
|
|
#include <net/bpf.h>
|
|
#include <net/if.h>
|
|
#include <net/if_arp.h>
|
|
#include <net/if_types.h>
|
|
#include <net/route.h>
|
|
#include <netinet/in.h>
|
|
#include <termios.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip_mroute.h>
|
|
'
|
|
|
|
|
|
includes='
|
|
#include <sys/types.h>
|
|
#include <sys/file.h>
|
|
#include <fcntl.h>
|
|
#include <dirent.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/ip.h>
|
|
#include <netinet/ip6.h>
|
|
#include <netinet/tcp.h>
|
|
#include <errno.h>
|
|
#include <sys/signal.h>
|
|
#include <signal.h>
|
|
#include <sys/resource.h>
|
|
#include <time.h>
|
|
'
|
|
ccflags="$@"
|
|
|
|
# Write go tool cgo -godefs input.
|
|
(
|
|
echo package unix
|
|
echo
|
|
echo '/*'
|
|
indirect="includes_$(uname)"
|
|
echo "${!indirect} $includes"
|
|
echo '*/'
|
|
echo 'import "C"'
|
|
echo 'import "syscall"'
|
|
echo
|
|
echo 'const ('
|
|
|
|
# The gcc command line prints all the #defines
|
|
# it encounters while processing the input
|
|
echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
|
|
awk '
|
|
$1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
|
|
|
|
$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers
|
|
$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
|
|
$2 ~ /^(SCM_SRCRT)$/ {next}
|
|
$2 ~ /^(MAP_FAILED)$/ {next}
|
|
$2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.
|
|
|
|
$2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
|
|
$2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}
|
|
|
|
$2 !~ /^ECCAPBITS/ &&
|
|
$2 !~ /^ETH_/ &&
|
|
$2 !~ /^EPROC_/ &&
|
|
$2 !~ /^EQUIV_/ &&
|
|
$2 !~ /^EXPR_/ &&
|
|
$2 ~ /^E[A-Z0-9_]+$/ ||
|
|
$2 ~ /^B[0-9_]+$/ ||
|
|
$2 ~ /^(OLD|NEW)DEV$/ ||
|
|
$2 == "BOTHER" ||
|
|
$2 ~ /^CI?BAUD(EX)?$/ ||
|
|
$2 == "IBSHIFT" ||
|
|
$2 ~ /^V[A-Z0-9]+$/ ||
|
|
$2 ~ /^CS[A-Z0-9]/ ||
|
|
$2 ~ /^I(SIG|CANON|CRNL|UCLC|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
|
|
$2 ~ /^IGN/ ||
|
|
$2 ~ /^IX(ON|ANY|OFF)$/ ||
|
|
$2 ~ /^IN(LCR|PCK)$/ ||
|
|
$2 !~ "X86_CR3_PCID_NOFLUSH" &&
|
|
$2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
|
|
$2 ~ /^C(LOCAL|READ|MSPAR|RTSCTS)$/ ||
|
|
$2 == "BRKINT" ||
|
|
$2 == "HUPCL" ||
|
|
$2 == "PENDIN" ||
|
|
$2 == "TOSTOP" ||
|
|
$2 == "XCASE" ||
|
|
$2 == "ALTWERASE" ||
|
|
$2 == "NOKERNINFO" ||
|
|
$2 ~ /^PAR/ ||
|
|
$2 ~ /^SIG[^_]/ ||
|
|
$2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ ||
|
|
$2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ ||
|
|
$2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ ||
|
|
$2 ~ /^O?XTABS$/ ||
|
|
$2 ~ /^TC[IO](ON|OFF)$/ ||
|
|
$2 ~ /^IN_/ ||
|
|
$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
|
|
$2 ~ /^LO_(KEY|NAME)_SIZE$/ ||
|
|
$2 ~ /^LOOP_(CLR|CTL|GET|SET)_/ ||
|
|
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|MCAST|EVFILT|NOTE|EV|SHUT|PROT|MAP|MFD|T?PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
|
|
$2 ~ /^TP_STATUS_/ ||
|
|
$2 ~ /^FALLOC_/ ||
|
|
$2 == "ICMPV6_FILTER" ||
|
|
$2 == "SOMAXCONN" ||
|
|
$2 == "NAME_MAX" ||
|
|
$2 == "IFNAMSIZ" ||
|
|
$2 ~ /^CTL_(HW|KERN|MAXNAME|NET|QUERY)$/ ||
|
|
$2 ~ /^KERN_(HOSTNAME|OS(RELEASE|TYPE)|VERSION)$/ ||
|
|
$2 ~ /^HW_MACHINE$/ ||
|
|
$2 ~ /^SYSCTL_VERS/ ||
|
|
$2 !~ "MNT_BITS" &&
|
|
$2 ~ /^(MS|MNT|UMOUNT)_/ ||
|
|
$2 ~ /^NS_GET_/ ||
|
|
$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
|
|
$2 ~ /^(O|F|[ES]?FD|NAME|S|PTRACE|PT)_/ ||
|
|
$2 ~ /^KEXEC_/ ||
|
|
$2 ~ /^LINUX_REBOOT_CMD_/ ||
|
|
$2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
|
|
$2 ~ /^MODULE_INIT_/ ||
|
|
$2 !~ "NLA_TYPE_MASK" &&
|
|
$2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTC|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P|NETNSA)_/ ||
|
|
$2 ~ /^SIOC/ ||
|
|
$2 ~ /^TIOC/ ||
|
|
$2 ~ /^TCGET/ ||
|
|
$2 ~ /^TCSET/ ||
|
|
$2 ~ /^TC(FLSH|SBRKP?|XONC)$/ ||
|
|
$2 !~ "RTF_BITS" &&
|
|
$2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
|
|
$2 ~ /^BIOC/ ||
|
|
$2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
|
|
$2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|LOCKS|MEMLOCK|MSGQUEUE|NICE|NOFILE|NPROC|RSS|RTPRIO|RTTIME|SIGPENDING|STACK)|RLIM_INFINITY/ ||
|
|
$2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
|
|
$2 ~ /^CLONE_[A-Z_]+/ ||
|
|
$2 !~ /^(BPF_TIMEVAL|BPF_FIB_LOOKUP_[A-Z]+)$/ &&
|
|
$2 ~ /^(BPF|DLT)_/ ||
|
|
$2 ~ /^(CLOCK|TIMER)_/ ||
|
|
$2 ~ /^CAN_/ ||
|
|
$2 ~ /^CAP_/ ||
|
|
$2 ~ /^ALG_/ ||
|
|
$2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE|IOC_(GET|SET)_ENCRYPTION)/ ||
|
|
$2 ~ /^GRND_/ ||
|
|
$2 ~ /^RND/ ||
|
|
$2 ~ /^KEY_(SPEC|REQKEY_DEFL)_/ ||
|
|
$2 ~ /^KEYCTL_/ ||
|
|
$2 ~ /^PERF_EVENT_IOC_/ ||
|
|
$2 ~ /^SECCOMP_MODE_/ ||
|
|
$2 ~ /^SPLICE_/ ||
|
|
$2 ~ /^SYNC_FILE_RANGE_/ ||
|
|
$2 !~ /^AUDIT_RECORD_MAGIC/ &&
|
|
$2 !~ /IOC_MAGIC/ &&
|
|
$2 ~ /^[A-Z][A-Z0-9_]+_MAGIC2?$/ ||
|
|
$2 ~ /^(VM|VMADDR)_/ ||
|
|
$2 ~ /^IOCTL_VM_SOCKETS_/ ||
|
|
$2 ~ /^(TASKSTATS|TS)_/ ||
|
|
$2 ~ /^CGROUPSTATS_/ ||
|
|
$2 ~ /^GENL_/ ||
|
|
$2 ~ /^STATX_/ ||
|
|
$2 ~ /^RENAME/ ||
|
|
$2 ~ /^UBI_IOC[A-Z]/ ||
|
|
$2 ~ /^UTIME_/ ||
|
|
$2 ~ /^XATTR_(CREATE|REPLACE|NO(DEFAULT|FOLLOW|SECURITY)|SHOWCOMPRESSION)/ ||
|
|
$2 ~ /^ATTR_(BIT_MAP_COUNT|(CMN|VOL|FILE)_)/ ||
|
|
$2 ~ /^FSOPT_/ ||
|
|
$2 ~ /^WDIOC_/ ||
|
|
$2 ~ /^NFN/ ||
|
|
$2 ~ /^XDP_/ ||
|
|
$2 ~ /^(HDIO|WIN|SMART)_/ ||
|
|
$2 ~ /^CRYPTO_/ ||
|
|
$2 !~ "WMESGLEN" &&
|
|
$2 ~ /^W[A-Z0-9]+$/ ||
|
|
$2 ~/^PPPIOC/ ||
|
|
$2 ~ /^FAN_|FANOTIFY_/ ||
|
|
$2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)}
|
|
$2 ~ /^__WCOREFLAG$/ {next}
|
|
$2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
|
|
|
|
{next}
|
|
' | sort
|
|
|
|
echo ')'
|
|
) >_const.go
|
|
|
|
# Pull out the error names for later.
|
|
errors=$(
|
|
echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
|
|
awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
|
|
sort
|
|
)
|
|
|
|
# Pull out the signal names for later.
|
|
signals=$(
|
|
echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
|
|
awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
|
|
egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
|
|
sort
|
|
)
|
|
|
|
# Again, writing regexps to a file.
|
|
echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
|
|
awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
|
|
sort >_error.grep
|
|
echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
|
|
awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
|
|
egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
|
|
sort >_signal.grep
|
|
|
|
echo '// mkerrors.sh' "$@"
|
|
echo '// Code generated by the command above; see README.md. DO NOT EDIT.'
|
|
echo
|
|
echo "// +build ${GOARCH},${GOOS}"
|
|
echo
|
|
go tool cgo -godefs -- "$@" _const.go >_error.out
|
|
cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
|
|
echo
|
|
echo '// Errors'
|
|
echo 'const ('
|
|
cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= syscall.Errno(\1)/'
|
|
echo ')'
|
|
|
|
echo
|
|
echo '// Signals'
|
|
echo 'const ('
|
|
cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= syscall.Signal(\1)/'
|
|
echo ')'
|
|
|
|
# Run C program to print error and syscall strings.
|
|
(
|
|
echo -E "
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
|
|
#define nelem(x) (sizeof(x)/sizeof((x)[0]))
|
|
|
|
enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
|
|
|
|
struct tuple {
|
|
int num;
|
|
const char *name;
|
|
};
|
|
|
|
struct tuple errors[] = {
|
|
"
|
|
for i in $errors
|
|
do
|
|
echo -E ' {'$i', "'$i'" },'
|
|
done
|
|
|
|
echo -E "
|
|
};
|
|
|
|
struct tuple signals[] = {
|
|
"
|
|
for i in $signals
|
|
do
|
|
echo -E ' {'$i', "'$i'" },'
|
|
done
|
|
|
|
# Use -E because on some systems bash builtin interprets \n itself.
|
|
echo -E '
|
|
};
|
|
|
|
static int
|
|
tuplecmp(const void *a, const void *b)
|
|
{
|
|
return ((struct tuple *)a)->num - ((struct tuple *)b)->num;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
int i, e;
|
|
char buf[1024], *p;
|
|
|
|
printf("\n\n// Error table\n");
|
|
printf("var errorList = [...]struct {\n");
|
|
printf("\tnum syscall.Errno\n");
|
|
printf("\tname string\n");
|
|
printf("\tdesc string\n");
|
|
printf("} {\n");
|
|
qsort(errors, nelem(errors), sizeof errors[0], tuplecmp);
|
|
for(i=0; i<nelem(errors); i++) {
|
|
e = errors[i].num;
|
|
if(i > 0 && errors[i-1].num == e)
|
|
continue;
|
|
strcpy(buf, strerror(e));
|
|
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
|
|
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
|
|
buf[0] += a - A;
|
|
printf("\t{ %d, \"%s\", \"%s\" },\n", e, errors[i].name, buf);
|
|
}
|
|
printf("}\n\n");
|
|
|
|
printf("\n\n// Signal table\n");
|
|
printf("var signalList = [...]struct {\n");
|
|
printf("\tnum syscall.Signal\n");
|
|
printf("\tname string\n");
|
|
printf("\tdesc string\n");
|
|
printf("} {\n");
|
|
qsort(signals, nelem(signals), sizeof signals[0], tuplecmp);
|
|
for(i=0; i<nelem(signals); i++) {
|
|
e = signals[i].num;
|
|
if(i > 0 && signals[i-1].num == e)
|
|
continue;
|
|
strcpy(buf, strsignal(e));
|
|
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
|
|
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
|
|
buf[0] += a - A;
|
|
// cut trailing : number.
|
|
p = strrchr(buf, ":"[0]);
|
|
if(p)
|
|
*p = '\0';
|
|
printf("\t{ %d, \"%s\", \"%s\" },\n", e, signals[i].name, buf);
|
|
}
|
|
printf("}\n\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
'
|
|
) >_errors.c
|
|
|
|
$CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out
|