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syscall: Linux-only support for parent death signal

Browse Source 
As discussed in this thread:

https://groups.google.com/group/golang-dev/browse_thread/thread/5b76b7700265a787

I've tried to come up with a solution that is minimally invasive for the platforms that don't support "parent death signal", without splitting up exec_unix.go.

See also: http://www.win.tue.nl/~aeb/linux/lk/lk-5.html#ss5.8

R=rsc, dave, borman, iant, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/5487061
This commit is contained in:
Albert Strasheim 2012-01-09 21:37:46 +09:00 committed by Mikio Hara
parent 468e692e38
commit 2cb6fcf63f
19 changed files with 643 additions and 221 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/buildscript_darwin_386.sh
View File

@ -262,7 +262,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/darwin_386/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_darwin.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_darwin.go ./syscall_darwin_386.go ./syscall_unix.go ./zerrors_darwin_386.go ./zsyscall_darwin_386.go ./zsysnum_darwin_386.go ./ztypes_darwin_386.go
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_darwin.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_darwin.go ./syscall_darwin_386.go ./syscall_unix.go ./zerrors_darwin_386.go ./zsyscall_darwin_386.go ./zsysnum_darwin_386.go ./ztypes_darwin_386.go
8a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_darwin_386.8 -DGOOS_darwin -DGOARCH_386 ./asm_darwin_386.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.8 "$WORK"/syscall/_obj/asm_darwin_386.8
cp "$WORK"/syscall.a "$GOROOT"/pkg/darwin_386/syscall.a

2
src/buildscript_darwin_amd64.sh
View File

@ -261,7 +261,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/darwin_amd64/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_darwin.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_darwin.go ./syscall_darwin_amd64.go ./syscall_unix.go ./zerrors_darwin_amd64.go ./zsyscall_darwin_amd64.go ./zsysnum_darwin_amd64.go ./ztypes_darwin_amd64.go
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_darwin.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_darwin.go ./syscall_darwin_amd64.go ./syscall_unix.go ./zerrors_darwin_amd64.go ./zsyscall_darwin_amd64.go ./zsysnum_darwin_amd64.go ./ztypes_darwin_amd64.go
6a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_darwin_amd64.6 -DGOOS_darwin -DGOARCH_amd64 ./asm_darwin_amd64.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.6 "$WORK"/syscall/_obj/asm_darwin_amd64.6
cp "$WORK"/syscall.a "$GOROOT"/pkg/darwin_amd64/syscall.a

2
src/buildscript_freebsd_386.sh
View File

@ -262,7 +262,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/freebsd_386/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_freebsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_freebsd.go ./syscall_freebsd_386.go ./syscall_unix.go ./zerrors_freebsd_386.go ./zsyscall_freebsd_386.go ./zsysnum_freebsd_386.go ./ztypes_freebsd_386.go
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_freebsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_freebsd.go ./syscall_freebsd_386.go ./syscall_unix.go ./zerrors_freebsd_386.go ./zsyscall_freebsd_386.go ./zsysnum_freebsd_386.go ./ztypes_freebsd_386.go
8a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_freebsd_386.8 -DGOOS_freebsd -DGOARCH_386 ./asm_freebsd_386.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.8 "$WORK"/syscall/_obj/asm_freebsd_386.8
cp "$WORK"/syscall.a "$GOROOT"/pkg/freebsd_386/syscall.a

2
src/buildscript_freebsd_amd64.sh
View File

@ -261,7 +261,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/freebsd_amd64/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_freebsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_freebsd.go ./syscall_freebsd_amd64.go ./syscall_unix.go ./zerrors_freebsd_amd64.go ./zsyscall_freebsd_amd64.go ./zsysnum_freebsd_amd64.go ./ztypes_freebsd_amd64.go
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_freebsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_freebsd.go ./syscall_freebsd_amd64.go ./syscall_unix.go ./zerrors_freebsd_amd64.go ./zsyscall_freebsd_amd64.go ./zsysnum_freebsd_amd64.go ./ztypes_freebsd_amd64.go
6a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_freebsd_amd64.6 -DGOOS_freebsd -DGOARCH_amd64 ./asm_freebsd_amd64.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.6 "$WORK"/syscall/_obj/asm_freebsd_amd64.6
cp "$WORK"/syscall.a "$GOROOT"/pkg/freebsd_amd64/syscall.a

2
src/buildscript_linux_386.sh
View File

@ -262,7 +262,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/linux_386/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./env_unix.go ./exec_unix.go ./lsf_linux.go ./netlink_linux.go ./sockcmsg_linux.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_linux.go ./syscall_linux_386.go ./syscall_unix.go ./zerrors_linux_386.go ./zsyscall_linux_386.go ./zsysnum_linux_386.go ./ztypes_linux_386.go
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./env_unix.go ./exec_linux.go ./exec_unix.go ./lsf_linux.go ./netlink_linux.go ./sockcmsg_linux.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_linux.go ./syscall_linux_386.go ./syscall_unix.go ./zerrors_linux_386.go ./zsyscall_linux_386.go ./zsysnum_linux_386.go ./ztypes_linux_386.go
8a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_linux_386.8 -DGOOS_linux -DGOARCH_386 ./asm_linux_386.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.8 "$WORK"/syscall/_obj/asm_linux_386.8
cp "$WORK"/syscall.a "$GOROOT"/pkg/linux_386/syscall.a

2
src/buildscript_linux_amd64.sh
View File

@ -261,7 +261,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/linux_amd64/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./env_unix.go ./exec_unix.go ./lsf_linux.go ./netlink_linux.go ./sockcmsg_linux.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_linux.go ./syscall_linux_amd64.go ./syscall_unix.go ./zerrors_linux_amd64.go ./zsyscall_linux_amd64.go ./zsysnum_linux_amd64.go ./ztypes_linux_amd64.go
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./env_unix.go ./exec_linux.go ./exec_unix.go ./lsf_linux.go ./netlink_linux.go ./sockcmsg_linux.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_linux.go ./syscall_linux_amd64.go ./syscall_unix.go ./zerrors_linux_amd64.go ./zsyscall_linux_amd64.go ./zsysnum_linux_amd64.go ./ztypes_linux_amd64.go
6a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_linux_amd64.6 -DGOOS_linux -DGOARCH_amd64 ./asm_linux_amd64.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.6 "$WORK"/syscall/_obj/asm_linux_amd64.6
cp "$WORK"/syscall.a "$GOROOT"/pkg/linux_amd64/syscall.a

2
src/buildscript_linux_arm.sh
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@ -265,7 +265,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/linux_arm/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
5g -o "$WORK"/syscall/_obj/_go_.5 -p syscall -I "$WORK" ./env_unix.go ./exec_unix.go ./lsf_linux.go ./netlink_linux.go ./sockcmsg_linux.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_arm.go ./syscall_linux.go ./syscall_linux_arm.go ./syscall_unix.go ./zerrors_linux_arm.go ./zsyscall_linux_arm.go ./zsysnum_linux_arm.go ./ztypes_linux_arm.go
5g -o "$WORK"/syscall/_obj/_go_.5 -p syscall -I "$WORK" ./env_unix.go ./exec_linux.go ./exec_unix.go ./lsf_linux.go ./netlink_linux.go ./sockcmsg_linux.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_arm.go ./syscall_linux.go ./syscall_linux_arm.go ./syscall_unix.go ./zerrors_linux_arm.go ./zsyscall_linux_arm.go ./zsysnum_linux_arm.go ./ztypes_linux_arm.go
5a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_linux_arm.5 -DGOOS_linux -DGOARCH_arm ./asm_linux_arm.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.5 "$WORK"/syscall/_obj/asm_linux_arm.5
cp "$WORK"/syscall.a "$GOROOT"/pkg/linux_arm/syscall.a

2
src/buildscript_netbsd_386.sh
View File

@ -262,7 +262,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/netbsd_386/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_netbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_netbsd.go ./syscall_netbsd_386.go ./syscall_unix.go ./zerrors_netbsd_386.go ./zsyscall_netbsd_386.go ./zsysnum_netbsd_386.go ./ztypes_netbsd_386.go
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_netbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_netbsd.go ./syscall_netbsd_386.go ./syscall_unix.go ./zerrors_netbsd_386.go ./zsyscall_netbsd_386.go ./zsysnum_netbsd_386.go ./ztypes_netbsd_386.go
8a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_netbsd_386.8 -DGOOS_netbsd -DGOARCH_386 ./asm_netbsd_386.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.8 "$WORK"/syscall/_obj/asm_netbsd_386.8
cp "$WORK"/syscall.a "$GOROOT"/pkg/netbsd_386/syscall.a

2
src/buildscript_netbsd_amd64.sh
View File

@ -261,7 +261,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/netbsd_amd64/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_netbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_netbsd.go ./syscall_netbsd_amd64.go ./syscall_unix.go ./zerrors_netbsd_amd64.go ./zsyscall_netbsd_amd64.go ./zsysnum_netbsd_amd64.go ./ztypes_netbsd_amd64.go
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_netbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_netbsd.go ./syscall_netbsd_amd64.go ./syscall_unix.go ./zerrors_netbsd_amd64.go ./zsyscall_netbsd_amd64.go ./zsysnum_netbsd_amd64.go ./ztypes_netbsd_amd64.go
6a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_netbsd_amd64.6 -DGOOS_netbsd -DGOARCH_amd64 ./asm_netbsd_amd64.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.6 "$WORK"/syscall/_obj/asm_netbsd_amd64.6
cp "$WORK"/syscall.a "$GOROOT"/pkg/netbsd_amd64/syscall.a

2
src/buildscript_openbsd_386.sh
View File

@ -262,7 +262,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/openbsd_386/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_openbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_openbsd.go ./syscall_openbsd_386.go ./syscall_unix.go ./zerrors_openbsd_386.go ./zsyscall_openbsd_386.go ./zsysctl_openbsd.go ./zsysnum_openbsd_386.go ./ztypes_openbsd_386.go
8g -o "$WORK"/syscall/_obj/_go_.8 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_openbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_386.go ./syscall_bsd.go ./syscall_openbsd.go ./syscall_openbsd_386.go ./syscall_unix.go ./zerrors_openbsd_386.go ./zsyscall_openbsd_386.go ./zsysctl_openbsd.go ./zsysnum_openbsd_386.go ./ztypes_openbsd_386.go
8a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_openbsd_386.8 -DGOOS_openbsd -DGOARCH_386 ./asm_openbsd_386.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.8 "$WORK"/syscall/_obj/asm_openbsd_386.8
cp "$WORK"/syscall.a "$GOROOT"/pkg/openbsd_386/syscall.a

2
src/buildscript_openbsd_amd64.sh
View File

@ -261,7 +261,7 @@ cp "$WORK"/encoding/json.a "$GOROOT"/pkg/openbsd_amd64/encoding/json.a
mkdir -p "$WORK"/syscall/_obj/
cd "$GOROOT"/src/pkg/syscall
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_unix.go ./route_bsd.go ./route_openbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_openbsd.go ./syscall_openbsd_amd64.go ./syscall_unix.go ./zerrors_openbsd_amd64.go ./zsyscall_openbsd_amd64.go ./zsysctl_openbsd.go ./zsysnum_openbsd_amd64.go ./ztypes_openbsd_amd64.go
6g -o "$WORK"/syscall/_obj/_go_.6 -p syscall -I "$WORK" ./bpf_bsd.go ./env_unix.go ./exec_bsd.go ./exec_unix.go ./route_bsd.go ./route_openbsd.go ./sockcmsg_unix.go ./str.go ./syscall.go ./syscall_amd64.go ./syscall_bsd.go ./syscall_openbsd.go ./syscall_openbsd_amd64.go ./syscall_unix.go ./zerrors_openbsd_amd64.go ./zsyscall_openbsd_amd64.go ./zsysctl_openbsd.go ./zsysnum_openbsd_amd64.go ./ztypes_openbsd_amd64.go
6a -I "$WORK"/syscall/_obj/ -o "$WORK"/syscall/_obj/asm_openbsd_amd64.6 -DGOOS_openbsd -DGOARCH_amd64 ./asm_openbsd_amd64.s
gopack grc "$WORK"/syscall.a "$WORK"/syscall/_obj/_go_.6 "$WORK"/syscall/_obj/asm_openbsd_amd64.6
cp "$WORK"/syscall.a "$GOROOT"/pkg/openbsd_amd64/syscall.a

5
src/pkg/syscall/Makefile
View File

@ -19,6 +19,7 @@ GOFILES=\
GOFILES_darwin=\
bpf_bsd.go\
env_unix.go\
exec_bsd.go\
exec_unix.go\
route_bsd.go\
route_darwin.go\
@ -29,6 +30,7 @@ GOFILES_darwin=\
GOFILES_freebsd=\
bpf_bsd.go\
env_unix.go\
exec_bsd.go\
exec_unix.go\
route_bsd.go\
route_freebsd.go\
@ -39,6 +41,7 @@ GOFILES_freebsd=\
GOFILES_linux=\
env_unix.go\
exec_unix.go\
exec_linux.go\
lsf_linux.go\
netlink_linux.go\
sockcmsg_linux.go\
@ -48,6 +51,7 @@ GOFILES_linux=\
GOFILES_netbsd=\
bpf_bsd.go\
env_unix.go\
exec_bsd.go\
exec_unix.go\
route_bsd.go\
route_netbsd.go\
@ -58,6 +62,7 @@ GOFILES_netbsd=\
GOFILES_openbsd=\
bpf_bsd.go\
env_unix.go\
exec_bsd.go\
exec_unix.go\
route_bsd.go\
route_openbsd.go\

220
src/pkg/syscall/exec_bsd.go Normal file
View File

@ -0,0 +1,220 @@
// Copyright 2011 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.
// +build darwin freebsd netbsd openbsd
package syscall
import (
"unsafe"
)
type SysProcAttr struct {
Chroot string // Chroot.
Credential *Credential // Credential.
Ptrace bool // Enable tracing.
Setsid bool // Create session.
Setpgid bool // Set process group ID to new pid (SYSV setpgrp)
Setctty bool // Set controlling terminal to fd 0
Noctty bool // Detach fd 0 from controlling terminal
}
// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
// If a dup or exec fails, write the errno error to pipe.
// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
// In the child, this function must not acquire any locks, because
// they might have been locked at the time of the fork. This means
// no rescheduling, no malloc calls, and no new stack segments.
// The calls to RawSyscall are okay because they are assembly
// functions that do not grow the stack.
func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr *ProcAttr, sys *SysProcAttr, pipe int) (pid int, err Errno) {
// Declare all variables at top in case any
// declarations require heap allocation (e.g., err1).
var (
r1, r2 uintptr
err1 Errno
nextfd int
i int
)
// guard against side effects of shuffling fds below.
fd := append([]int(nil), attr.Files...)
darwin := OS == "darwin"
// About to call fork.
// No more allocation or calls of non-assembly functions.
r1, r2, err1 = RawSyscall(SYS_FORK, 0, 0, 0)
if err1 != 0 {
return 0, err1
}
// On Darwin:
// r1 = child pid in both parent and child.
// r2 = 0 in parent, 1 in child.
// Convert to normal Unix r1 = 0 in child.
if darwin && r2 == 1 {
r1 = 0
}
if r1 != 0 {
// parent; return PID
return int(r1), 0
}
// Fork succeeded, now in child.
// Enable tracing if requested.
if sys.Ptrace {
_, _, err1 = RawSyscall(SYS_PTRACE, uintptr(PTRACE_TRACEME), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Session ID
if sys.Setsid {
_, _, err1 = RawSyscall(SYS_SETSID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Set process group
if sys.Setpgid {
_, _, err1 = RawSyscall(SYS_SETPGID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chroot
if chroot != nil {
_, _, err1 = RawSyscall(SYS_CHROOT, uintptr(unsafe.Pointer(chroot)), 0, 0)
if err1 != 0 {
goto childerror
}
}
// User and groups
if cred := sys.Credential; cred != nil {
ngroups := uintptr(len(cred.Groups))
groups := uintptr(0)
if ngroups > 0 {
groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
}
_, _, err1 = RawSyscall(SYS_SETGROUPS, ngroups, groups, 0)
if err1 != 0 {
goto childerror
}
_, _, err1 = RawSyscall(SYS_SETGID, uintptr(cred.Gid), 0, 0)
if err1 != 0 {
goto childerror
}
_, _, err1 = RawSyscall(SYS_SETUID, uintptr(cred.Uid), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chdir
if dir != nil {
_, _, err1 = RawSyscall(SYS_CHDIR, uintptr(unsafe.Pointer(dir)), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Pass 1: look for fd[i] < i and move those up above len(fd)
// so that pass 2 won't stomp on an fd it needs later.
nextfd = int(len(fd))
if pipe < nextfd {
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(pipe), uintptr(nextfd), 0)
if err1 != 0 {
goto childerror
}
RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
pipe = nextfd
nextfd++
}
for i = 0; i < len(fd); i++ {
if fd[i] >= 0 && fd[i] < int(i) {
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(nextfd), 0)
if err1 != 0 {
goto childerror
}
RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
fd[i] = nextfd
nextfd++
if nextfd == pipe { // don't stomp on pipe
nextfd++
}
}
}
// Pass 2: dup fd[i] down onto i.
for i = 0; i < len(fd); i++ {
if fd[i] == -1 {
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
continue
}
if fd[i] == int(i) {
// dup2(i, i) won't clear close-on-exec flag on Linux,
// probably not elsewhere either.
_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(fd[i]), F_SETFD, 0)
if err1 != 0 {
goto childerror
}
continue
}
// The new fd is created NOT close-on-exec,
// which is exactly what we want.
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(i), 0)
if err1 != 0 {
goto childerror
}
}
// By convention, we don't close-on-exec the fds we are
// started with, so if len(fd) < 3, close 0, 1, 2 as needed.
// Programs that know they inherit fds >= 3 will need
// to set them close-on-exec.
for i = len(fd); i < 3; i++ {
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
}
// Detach fd 0 from tty
if sys.Noctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCNOTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Make fd 0 the tty
if sys.Setctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCSCTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Time to exec.
_, _, err1 = RawSyscall(SYS_EXECVE,
uintptr(unsafe.Pointer(argv0)),
uintptr(unsafe.Pointer(&argv[0])),
uintptr(unsafe.Pointer(&envv[0])))
childerror:
// send error code on pipe
RawSyscall(SYS_WRITE, uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1))
for {
RawSyscall(SYS_EXIT, 253, 0, 0)
}
// Calling panic is not actually safe,
// but the for loop above won't break
// and this shuts up the compiler.
panic("unreached")
}

231
src/pkg/syscall/exec_linux.go Normal file
View File

@ -0,0 +1,231 @@
// Copyright 2011 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.
// +build linux
package syscall
import (
"unsafe"
)
type SysProcAttr struct {
Chroot string // Chroot.
Credential *Credential // Credential.
Ptrace bool // Enable tracing.
Setsid bool // Create session.
Setpgid bool // Set process group ID to new pid (SYSV setpgrp)
Setctty bool // Set controlling terminal to fd 0
Noctty bool // Detach fd 0 from controlling terminal
Pdeathsig int // Signal that the process will get when its parent dies (Linux only)
}
// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
// If a dup or exec fails, write the errno error to pipe.
// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
// In the child, this function must not acquire any locks, because
// they might have been locked at the time of the fork. This means
// no rescheduling, no malloc calls, and no new stack segments.
// The calls to RawSyscall are okay because they are assembly
// functions that do not grow the stack.
func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr *ProcAttr, sys *SysProcAttr, pipe int) (pid int, err Errno) {
// Declare all variables at top in case any
// declarations require heap allocation (e.g., err1).
var (
r1 uintptr
err1 Errno
nextfd int
i int
)
// guard against side effects of shuffling fds below.
fd := append([]int(nil), attr.Files...)
// About to call fork.
// No more allocation or calls of non-assembly functions.
r1, _, err1 = RawSyscall(SYS_FORK, 0, 0, 0)
if err1 != 0 {
return 0, err1
}
if r1 != 0 {
// parent; return PID
return int(r1), 0
}
// Fork succeeded, now in child.
// Parent death signal
if sys.Pdeathsig != 0 {
_, _, err1 = RawSyscall6(SYS_PRCTL, PR_SET_PDEATHSIG, uintptr(sys.Pdeathsig), 0, 0, 0, 0)
if err1 != 0 {
goto childerror
}
// Signal self if parent is already dead. This might cause a
// duplicate signal in rare cases, but it won't matter when
// using SIGKILL.
r1, _, _ = RawSyscall(SYS_GETPPID, 0, 0, 0)
if r1 == 1 {
pid, _, _ := RawSyscall(SYS_GETPID, 0, 0, 0)
_, _, err1 := RawSyscall(SYS_KILL, pid, uintptr(sys.Pdeathsig), 0)
if err1 != 0 {
goto childerror
}
}
}
// Enable tracing if requested.
if sys.Ptrace {
_, _, err1 = RawSyscall(SYS_PTRACE, uintptr(PTRACE_TRACEME), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Session ID
if sys.Setsid {
_, _, err1 = RawSyscall(SYS_SETSID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Set process group
if sys.Setpgid {
_, _, err1 = RawSyscall(SYS_SETPGID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chroot
if chroot != nil {
_, _, err1 = RawSyscall(SYS_CHROOT, uintptr(unsafe.Pointer(chroot)), 0, 0)
if err1 != 0 {
goto childerror
}
}
// User and groups
if cred := sys.Credential; cred != nil {
ngroups := uintptr(len(cred.Groups))
groups := uintptr(0)
if ngroups > 0 {
groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
}
_, _, err1 = RawSyscall(SYS_SETGROUPS, ngroups, groups, 0)
if err1 != 0 {
goto childerror
}
_, _, err1 = RawSyscall(SYS_SETGID, uintptr(cred.Gid), 0, 0)
if err1 != 0 {
goto childerror
}
_, _, err1 = RawSyscall(SYS_SETUID, uintptr(cred.Uid), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chdir
if dir != nil {
_, _, err1 = RawSyscall(SYS_CHDIR, uintptr(unsafe.Pointer(dir)), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Pass 1: look for fd[i] < i and move those up above len(fd)
// so that pass 2 won't stomp on an fd it needs later.
nextfd = int(len(fd))
if pipe < nextfd {
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(pipe), uintptr(nextfd), 0)
if err1 != 0 {
goto childerror
}
RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
pipe = nextfd
nextfd++
}
for i = 0; i < len(fd); i++ {
if fd[i] >= 0 && fd[i] < int(i) {
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(nextfd), 0)
if err1 != 0 {
goto childerror
}
RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
fd[i] = nextfd
nextfd++
if nextfd == pipe { // don't stomp on pipe
nextfd++
}
}
}
// Pass 2: dup fd[i] down onto i.
for i = 0; i < len(fd); i++ {
if fd[i] == -1 {
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
continue
}
if fd[i] == int(i) {
// dup2(i, i) won't clear close-on-exec flag on Linux,
// probably not elsewhere either.
_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(fd[i]), F_SETFD, 0)
if err1 != 0 {
goto childerror
}
continue
}
// The new fd is created NOT close-on-exec,
// which is exactly what we want.
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(i), 0)
if err1 != 0 {
goto childerror
}
}
// By convention, we don't close-on-exec the fds we are
// started with, so if len(fd) < 3, close 0, 1, 2 as needed.
// Programs that know they inherit fds >= 3 will need
// to set them close-on-exec.
for i = len(fd); i < 3; i++ {
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
}
// Detach fd 0 from tty
if sys.Noctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCNOTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Make fd 0 the tty
if sys.Setctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCSCTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Time to exec.
_, _, err1 = RawSyscall(SYS_EXECVE,
uintptr(unsafe.Pointer(argv0)),
uintptr(unsafe.Pointer(&argv[0])),
uintptr(unsafe.Pointer(&envv[0])))
childerror:
// send error code on pipe
RawSyscall(SYS_WRITE, uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1))
for {
RawSyscall(SYS_EXIT, 253, 0, 0)
}
// Calling panic is not actually safe,
// but the for loop above won't break
// and this shuts up the compiler.
panic("unreached")
}

209
src/pkg/syscall/exec_unix.go
View File

@ -89,205 +89,6 @@ func SetNonblock(fd int, nonblocking bool) (err error) {
return err
}
// Fork, dup fd onto 0..len(fd), and exec(argv0, argvv, envv) in child.
// If a dup or exec fails, write the errno error to pipe.
// (Pipe is close-on-exec so if exec succeeds, it will be closed.)
// In the child, this function must not acquire any locks, because
// they might have been locked at the time of the fork. This means
// no rescheduling, no malloc calls, and no new stack segments.
// The calls to RawSyscall are okay because they are assembly
// functions that do not grow the stack.
func forkAndExecInChild(argv0 *byte, argv, envv []*byte, chroot, dir *byte, attr *ProcAttr, sys *SysProcAttr, pipe int) (pid int, err Errno) {
// Declare all variables at top in case any
// declarations require heap allocation (e.g., err1).
var (
r1, r2 uintptr
err1 Errno
nextfd int
i int
)
// guard against side effects of shuffling fds below.
fd := append([]int(nil), attr.Files...)
darwin := OS == "darwin"
// About to call fork.
// No more allocation or calls of non-assembly functions.
r1, r2, err1 = RawSyscall(SYS_FORK, 0, 0, 0)
if err1 != 0 {
return 0, err1
}
// On Darwin:
// r1 = child pid in both parent and child.
// r2 = 0 in parent, 1 in child.
// Convert to normal Unix r1 = 0 in child.
if darwin && r2 == 1 {
r1 = 0
}
if r1 != 0 {
// parent; return PID
return int(r1), 0
}
// Fork succeeded, now in child.
// Enable tracing if requested.
if sys.Ptrace {
_, _, err1 = RawSyscall(SYS_PTRACE, uintptr(PTRACE_TRACEME), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Session ID
if sys.Setsid {
_, _, err1 = RawSyscall(SYS_SETSID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Set process group
if sys.Setpgid {
_, _, err1 = RawSyscall(SYS_SETPGID, 0, 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chroot
if chroot != nil {
_, _, err1 = RawSyscall(SYS_CHROOT, uintptr(unsafe.Pointer(chroot)), 0, 0)
if err1 != 0 {
goto childerror
}
}
// User and groups
if cred := sys.Credential; cred != nil {
ngroups := uintptr(len(cred.Groups))
groups := uintptr(0)
if ngroups > 0 {
groups = uintptr(unsafe.Pointer(&cred.Groups[0]))
}
_, _, err1 = RawSyscall(SYS_SETGROUPS, ngroups, groups, 0)
if err1 != 0 {
goto childerror
}
_, _, err1 = RawSyscall(SYS_SETGID, uintptr(cred.Gid), 0, 0)
if err1 != 0 {
goto childerror
}
_, _, err1 = RawSyscall(SYS_SETUID, uintptr(cred.Uid), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Chdir
if dir != nil {
_, _, err1 = RawSyscall(SYS_CHDIR, uintptr(unsafe.Pointer(dir)), 0, 0)
if err1 != 0 {
goto childerror
}
}
// Pass 1: look for fd[i] < i and move those up above len(fd)
// so that pass 2 won't stomp on an fd it needs later.
nextfd = int(len(fd))
if pipe < nextfd {
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(pipe), uintptr(nextfd), 0)
if err1 != 0 {
goto childerror
}
RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
pipe = nextfd
nextfd++
}
for i = 0; i < len(fd); i++ {
if fd[i] >= 0 && fd[i] < int(i) {
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(nextfd), 0)
if err1 != 0 {
goto childerror
}
RawSyscall(SYS_FCNTL, uintptr(nextfd), F_SETFD, FD_CLOEXEC)
fd[i] = nextfd
nextfd++
if nextfd == pipe { // don't stomp on pipe
nextfd++
}
}
}
// Pass 2: dup fd[i] down onto i.
for i = 0; i < len(fd); i++ {
if fd[i] == -1 {
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
continue
}
if fd[i] == int(i) {
// dup2(i, i) won't clear close-on-exec flag on Linux,
// probably not elsewhere either.
_, _, err1 = RawSyscall(SYS_FCNTL, uintptr(fd[i]), F_SETFD, 0)
if err1 != 0 {
goto childerror
}
continue
}
// The new fd is created NOT close-on-exec,
// which is exactly what we want.
_, _, err1 = RawSyscall(SYS_DUP2, uintptr(fd[i]), uintptr(i), 0)
if err1 != 0 {
goto childerror
}
}
// By convention, we don't close-on-exec the fds we are
// started with, so if len(fd) < 3, close 0, 1, 2 as needed.
// Programs that know they inherit fds >= 3 will need
// to set them close-on-exec.
for i = len(fd); i < 3; i++ {
RawSyscall(SYS_CLOSE, uintptr(i), 0, 0)
}
// Detach fd 0 from tty
if sys.Noctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCNOTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Make fd 0 the tty
if sys.Setctty {
_, _, err1 = RawSyscall(SYS_IOCTL, 0, uintptr(TIOCSCTTY), 0)
if err1 != 0 {
goto childerror
}
}
// Time to exec.
_, _, err1 = RawSyscall(SYS_EXECVE,
uintptr(unsafe.Pointer(argv0)),
uintptr(unsafe.Pointer(&argv[0])),
uintptr(unsafe.Pointer(&envv[0])))
childerror:
// send error code on pipe
RawSyscall(SYS_WRITE, uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1))
for {
RawSyscall(SYS_EXIT, 253, 0, 0)
}
// Calling panic is not actually safe,
// but the for loop above won't break
// and this shuts up the compiler.
panic("unreached")
}
// Credential holds user and group identities to be assumed
// by a child process started by StartProcess.
type Credential struct {
@ -305,16 +106,6 @@ type ProcAttr struct {
Sys *SysProcAttr
}
type SysProcAttr struct {
Chroot string // Chroot.
Credential *Credential // Credential.
Ptrace bool // Enable tracing.
Setsid bool // Create session.
Setpgid bool // Set process group ID to new pid (SYSV setpgrp)
Setctty bool // Set controlling terminal to fd 0
Noctty bool // Detach fd 0 from controlling terminal
}
var zeroProcAttr ProcAttr
var zeroSysProcAttr SysProcAttr

3
src/pkg/syscall/mkerrors.sh
View File

@ -67,6 +67,7 @@ includes_Linux='
#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 <linux/if_addr.h>
@ -176,7 +177,7 @@ ccflags="$@"
$2 ~ /^SIG[^_]/ ||
$2 ~ /^IN_/ ||
$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV)_/ ||
$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|TCP|EVFILT|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
$2 == "SOMAXCONN" ||
$2 == "NAME_MAX" ||
$2 == "IFNAMSIZ" ||

58
src/pkg/syscall/zerrors_linux_386.go
View File

@ -659,6 +659,64 @@ const (
PROT_NONE = 0x0
PROT_READ = 0x1
PROT_WRITE = 0x2
PR_CAPBSET_DROP = 0x18
PR_CAPBSET_READ = 0x17
PR_ENDIAN_BIG = 0x0
PR_ENDIAN_LITTLE = 0x1
PR_ENDIAN_PPC_LITTLE = 0x2
PR_FPEMU_NOPRINT = 0x1
PR_FPEMU_SIGFPE = 0x2
PR_FP_EXC_ASYNC = 0x2
PR_FP_EXC_DISABLED = 0x0
PR_FP_EXC_DIV = 0x10000
PR_FP_EXC_INV = 0x100000
PR_FP_EXC_NONRECOV = 0x1
PR_FP_EXC_OVF = 0x20000
PR_FP_EXC_PRECISE = 0x3
PR_FP_EXC_RES = 0x80000
PR_FP_EXC_SW_ENABLE = 0x80
PR_FP_EXC_UND = 0x40000
PR_GET_DUMPABLE = 0x3
PR_GET_ENDIAN = 0x13
PR_GET_FPEMU = 0x9
PR_GET_FPEXC = 0xb
PR_GET_KEEPCAPS = 0x7
PR_GET_NAME = 0x10
PR_GET_PDEATHSIG = 0x2
PR_GET_SECCOMP = 0x15
PR_GET_SECUREBITS = 0x1b
PR_GET_TIMERSLACK = 0x1e
PR_GET_TIMING = 0xd
PR_GET_TSC = 0x19
PR_GET_UNALIGN = 0x5
PR_MCE_KILL = 0x21
PR_MCE_KILL_CLEAR = 0x0
PR_MCE_KILL_DEFAULT = 0x2
PR_MCE_KILL_EARLY = 0x1
PR_MCE_KILL_GET = 0x22
PR_MCE_KILL_LATE = 0x0
PR_MCE_KILL_SET = 0x1
PR_SET_DUMPABLE = 0x4
PR_SET_ENDIAN = 0x14
PR_SET_FPEMU = 0xa
PR_SET_FPEXC = 0xc
PR_SET_KEEPCAPS = 0x8
PR_SET_NAME = 0xf
PR_SET_PDEATHSIG = 0x1
PR_SET_SECCOMP = 0x16
PR_SET_SECUREBITS = 0x1c
PR_SET_TIMERSLACK = 0x1d
PR_SET_TIMING = 0xe
PR_SET_TSC = 0x1a
PR_SET_UNALIGN = 0x6
PR_TASK_PERF_EVENTS_DISABLE = 0x1f
PR_TASK_PERF_EVENTS_ENABLE = 0x20
PR_TIMING_STATISTICAL = 0x0
PR_TIMING_TIMESTAMP = 0x1
PR_TSC_ENABLE = 0x1
PR_TSC_SIGSEGV = 0x2
PR_UNALIGN_NOPRINT = 0x1
PR_UNALIGN_SIGBUS = 0x2
PTRACE_ATTACH = 0x10
PTRACE_CONT = 0x7
PTRACE_DETACH = 0x11

58
src/pkg/syscall/zerrors_linux_amd64.go
View File

@ -659,6 +659,64 @@ const (
PROT_NONE = 0x0
PROT_READ = 0x1
PROT_WRITE = 0x2
PR_CAPBSET_DROP = 0x18
PR_CAPBSET_READ = 0x17
PR_ENDIAN_BIG = 0x0
PR_ENDIAN_LITTLE = 0x1
PR_ENDIAN_PPC_LITTLE = 0x2
PR_FPEMU_NOPRINT = 0x1
PR_FPEMU_SIGFPE = 0x2
PR_FP_EXC_ASYNC = 0x2
PR_FP_EXC_DISABLED = 0x0
PR_FP_EXC_DIV = 0x10000
PR_FP_EXC_INV = 0x100000
PR_FP_EXC_NONRECOV = 0x1
PR_FP_EXC_OVF = 0x20000
PR_FP_EXC_PRECISE = 0x3
PR_FP_EXC_RES = 0x80000
PR_FP_EXC_SW_ENABLE = 0x80
PR_FP_EXC_UND = 0x40000
PR_GET_DUMPABLE = 0x3
PR_GET_ENDIAN = 0x13
PR_GET_FPEMU = 0x9
PR_GET_FPEXC = 0xb
PR_GET_KEEPCAPS = 0x7
PR_GET_NAME = 0x10
PR_GET_PDEATHSIG = 0x2
PR_GET_SECCOMP = 0x15
PR_GET_SECUREBITS = 0x1b
PR_GET_TIMERSLACK = 0x1e
PR_GET_TIMING = 0xd
PR_GET_TSC = 0x19
PR_GET_UNALIGN = 0x5
PR_MCE_KILL = 0x21
PR_MCE_KILL_CLEAR = 0x0
PR_MCE_KILL_DEFAULT = 0x2
PR_MCE_KILL_EARLY = 0x1
PR_MCE_KILL_GET = 0x22
PR_MCE_KILL_LATE = 0x0
PR_MCE_KILL_SET = 0x1
PR_SET_DUMPABLE = 0x4
PR_SET_ENDIAN = 0x14
PR_SET_FPEMU = 0xa
PR_SET_FPEXC = 0xc
PR_SET_KEEPCAPS = 0x8
PR_SET_NAME = 0xf
PR_SET_PDEATHSIG = 0x1
PR_SET_SECCOMP = 0x16
PR_SET_SECUREBITS = 0x1c
PR_SET_TIMERSLACK = 0x1d
PR_SET_TIMING = 0xe
PR_SET_TSC = 0x1a
PR_SET_UNALIGN = 0x6
PR_TASK_PERF_EVENTS_DISABLE = 0x1f
PR_TASK_PERF_EVENTS_ENABLE = 0x20
PR_TIMING_STATISTICAL = 0x0
PR_TIMING_TIMESTAMP = 0x1
PR_TSC_ENABLE = 0x1
PR_TSC_SIGSEGV = 0x2
PR_UNALIGN_NOPRINT = 0x1
PR_UNALIGN_SIGBUS = 0x2
PTRACE_ARCH_PRCTL = 0x1e
PTRACE_ATTACH = 0x10
PTRACE_CONT = 0x7

58
src/pkg/syscall/zerrors_linux_arm.go
View File

@ -623,6 +623,64 @@ const (
PROT_NONE = 0x0
PROT_READ = 0x1
PROT_WRITE = 0x2
PR_CAPBSET_DROP = 0x18
PR_CAPBSET_READ = 0x17
PR_ENDIAN_BIG = 0x0
PR_ENDIAN_LITTLE = 0x1
PR_ENDIAN_PPC_LITTLE = 0x2
PR_FPEMU_NOPRINT = 0x1
PR_FPEMU_SIGFPE = 0x2
PR_FP_EXC_ASYNC = 0x2
PR_FP_EXC_DISABLED = 0x0
PR_FP_EXC_DIV = 0x10000
PR_FP_EXC_INV = 0x100000
PR_FP_EXC_NONRECOV = 0x1
PR_FP_EXC_OVF = 0x20000
PR_FP_EXC_PRECISE = 0x3
PR_FP_EXC_RES = 0x80000
PR_FP_EXC_SW_ENABLE = 0x80
PR_FP_EXC_UND = 0x40000
PR_GET_DUMPABLE = 0x3
PR_GET_ENDIAN = 0x13
PR_GET_FPEMU = 0x9
PR_GET_FPEXC = 0xb
PR_GET_KEEPCAPS = 0x7
PR_GET_NAME = 0x10
PR_GET_PDEATHSIG = 0x2
PR_GET_SECCOMP = 0x15
PR_GET_SECUREBITS = 0x1b
PR_GET_TIMERSLACK = 0x1e
PR_GET_TIMING = 0xd
PR_GET_TSC = 0x19
PR_GET_UNALIGN = 0x5
PR_MCE_KILL = 0x21
PR_MCE_KILL_CLEAR = 0x0
PR_MCE_KILL_DEFAULT = 0x2
PR_MCE_KILL_EARLY = 0x1
PR_MCE_KILL_GET = 0x22
PR_MCE_KILL_LATE = 0x0
PR_MCE_KILL_SET = 0x1
PR_SET_DUMPABLE = 0x4
PR_SET_ENDIAN = 0x14
PR_SET_FPEMU = 0xa
PR_SET_FPEXC = 0xc
PR_SET_KEEPCAPS = 0x8
PR_SET_NAME = 0xf
PR_SET_PDEATHSIG = 0x1
PR_SET_SECCOMP = 0x16
PR_SET_SECUREBITS = 0x1c
PR_SET_TIMERSLACK = 0x1d
PR_SET_TIMING = 0xe
PR_SET_TSC = 0x1a
PR_SET_UNALIGN = 0x6
PR_TASK_PERF_EVENTS_DISABLE = 0x1f
PR_TASK_PERF_EVENTS_ENABLE = 0x20
PR_TIMING_STATISTICAL = 0x0
PR_TIMING_TIMESTAMP = 0x1
PR_TSC_ENABLE = 0x1
PR_TSC_SIGSEGV = 0x2
PR_UNALIGN_NOPRINT = 0x1
PR_UNALIGN_SIGBUS = 0x2
PTRACE_ATTACH = 0x10
PTRACE_CONT = 0x7
PTRACE_DETACH = 0x11