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unix: add Linux watchdog structures and missing constants

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This CL also adds the type-safe wrappers IoctlGetWatchdogInfo
and IoctlWatchdogKeepalive around the raw ioctl interface.

Change-Id: I98e3970807b28832e49524700b17b6b6f75d91ed
Reviewed-on: https://go-review.googlesource.com/c/sys/+/259497
Run-TryBot: Matt Layher <mdlayher@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Terin Stock <terinjokes@gmail.com>
Reviewed-by: Florian Lehner <lehner.florian86@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
This commit is contained in:
Matt Layher
2020-10-04 12:34:18 -04:00
parent fdedc70b46
commit f6757f2700
5 changed files with 45 additions and 1 deletions
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5
unix/linux/types.go
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@@ -120,6 +120,7 @@ struct termios2 {
#include <linux/stat.h>
#include <linux/taskstats.h>
#include <linux/tipc.h>
#include <linux/watchdog.h>
#include <linux/vm_sockets.h>
// abi/abi.h generated by mkall.go.
@@ -2510,3 +2511,7 @@ const (
CAN_RAW_FD_FRAMES = C.CAN_RAW_FD_FRAMES
CAN_RAW_JOIN_FILTERS = C.CAN_RAW_JOIN_FILTERS
)
// Watchdog API
type WatchdogInfo C.struct_watchdog_info

2
unix/mkerrors.sh
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@@ -546,7 +546,7 @@ ccflags="$@"
$2 ~ /^XATTR_(CREATE|REPLACE|NO(DEFAULT|FOLLOW|SECURITY)|SHOWCOMPRESSION)/ ||
$2 ~ /^ATTR_(BIT_MAP_COUNT|(CMN|VOL|FILE)_)/ ||
$2 ~ /^FSOPT_/ ||
$2 ~ /^WDIOC_/ ||
$2 ~ /^WDIO[CFS]_/ ||
$2 ~ /^NFN/ ||
$2 ~ /^XDP_/ ||
$2 ~ /^RWF_/ ||

16
unix/syscall_linux.go
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@@ -106,6 +106,15 @@ func IoctlGetRTCTime(fd int) (*RTCTime, error) {
return &value, err
}
// IoctlGetWatchdogInfo fetches information about a watchdog device from the
// Linux watchdog API. For more information, see:
// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html.
func IoctlGetWatchdogInfo(fd int) (*WatchdogInfo, error) {
var value WatchdogInfo
err := ioctl(fd, WDIOC_GETSUPPORT, uintptr(unsafe.Pointer(&value)))
return &value, err
}
func IoctlGetRTCWkAlrm(fd int) (*RTCWkAlrm, error) {
var value RTCWkAlrm
err := ioctl(fd, RTC_WKALM_RD, uintptr(unsafe.Pointer(&value)))
@@ -137,6 +146,13 @@ func IoctlFileDedupeRange(destFd int, value *FileDedupeRange) error {
return err
}
// IoctlWatchdogKeepalive issues a keepalive ioctl to a watchdog device. For
// more information, see:
// https://www.kernel.org/doc/html/latest/watchdog/watchdog-api.html.
func IoctlWatchdogKeepalive(fd int) error {
return ioctl(fd, WDIOC_KEEPALIVE, 0)
}
//sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error)
func Link(oldpath string, newpath string) (err error) {

17
unix/zerrors_linux.go
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@@ -2357,6 +2357,23 @@ const (
WCONTINUED = 0x8
WDIOC_SETPRETIMEOUT = 0xc0045708
WDIOC_SETTIMEOUT = 0xc0045706
WDIOF_ALARMONLY = 0x400
WDIOF_CARDRESET = 0x20
WDIOF_EXTERN1 = 0x4
WDIOF_EXTERN2 = 0x8
WDIOF_FANFAULT = 0x2
WDIOF_KEEPALIVEPING = 0x8000
WDIOF_MAGICCLOSE = 0x100
WDIOF_OVERHEAT = 0x1
WDIOF_POWEROVER = 0x40
WDIOF_POWERUNDER = 0x10
WDIOF_PRETIMEOUT = 0x200
WDIOF_SETTIMEOUT = 0x80
WDIOF_UNKNOWN = -0x1
WDIOS_DISABLECARD = 0x1
WDIOS_ENABLECARD = 0x2
WDIOS_TEMPPANIC = 0x4
WDIOS_UNKNOWN = -0x1
WEXITED = 0x4
WIN_ACKMEDIACHANGE = 0xdb
WIN_CHECKPOWERMODE1 = 0xe5

6
unix/ztypes_linux.go
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@@ -2567,3 +2567,9 @@ const (
CAN_RAW_FD_FRAMES = 0x5
CAN_RAW_JOIN_FILTERS = 0x6
)
type WatchdogInfo struct {
Options uint32
Version uint32
Identity [32]uint8
}