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unix: fix Signalfd function signature on linux

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The kernel raw syscall takes an additional parameter specifying
the size of the Sigset_t parameter, returns a file descriptor and sets errno.

Add a uintptr maxSize parameter, adjust the return to be (newfd int, err error).
Add the _NSIG #define and a wrapper to call with maxSize set to _C__NSIG/8 as done
in glibc/musl.

Change-Id: I277db0aab5c12364533c26ea800b7f394ec83ae4
Reviewed-on: https://go-review.googlesource.com/c/sys/+/178858
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Yuval Pavel Zholkover
2019-05-28 01:25:30 +00:00
committed by Ian Lance Taylor
parent 9cd6430ef9
commit adf421d2ca
28 changed files with 111 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files
unix/zsyscall_linux_mips.go
+6 -2
View File
@@ -1381,8 +1381,12 @@ func Setxattr(path string, attr string, data []byte, flags int) (err error) {
// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
func Signalfd(fd int, mask *Sigset_t, flags int) {
SyscallNoError(SYS_SIGNALFD4, uintptr(fd), uintptr(unsafe.Pointer(mask)), uintptr(flags))
func signalfd(fd int, sigmask *Sigset_t, maskSize uintptr, flags int) (newfd int, err error) {
r0, _, e1 := Syscall6(SYS_SIGNALFD4, uintptr(fd), uintptr(unsafe.Pointer(sigmask)), uintptr(maskSize), uintptr(flags), 0, 0)
newfd = int(r0)
if e1 != 0 {
err = errnoErr(e1)
}
return
}