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syscall: implement nametomib() on netbsd

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Implement nametomib() on NetBSD using the CTL_QUERY node discovery
mechanism.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6211071
This commit is contained in:
Joel Sing 2012-05-23 01:33:48 +10:00
parent 5c6162cdd1
commit 495a9dc2b3
7 changed files with 105 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/pkg/syscall/mkerrors.sh
View File

@ -106,7 +106,7 @@ includes_NetBSD='
#include <netinet/if_ether.h>
// Needed since <sys/param.h> refers to it...
const int schedppq = 1;
#define schedppq 1
'
includes_OpenBSD='
@ -199,8 +199,8 @@ ccflags="$@"
$2 == "SOMAXCONN" ||
$2 == "NAME_MAX" ||
$2 == "IFNAMSIZ" ||
$2 == "CTL_NET" ||
$2 == "CTL_MAXNAME" ||
$2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ ||
$2 ~ /^SYSCTL_VERS/ ||
$2 ~ /^(MS|MNT)_/ ||
$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
$2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ ||

60
src/pkg/syscall/syscall_netbsd.go
View File

@ -28,8 +28,66 @@ type SockaddrDatalink struct {
func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
var olen uintptr
// Get a list of all sysctl nodes below the given MIB by performing
// a sysctl for the given MIB with CTL_QUERY appended.
mib = append(mib, CTL_QUERY)
qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
qp := (*byte)(unsafe.Pointer(&qnode))
sz := unsafe.Sizeof(qnode)
if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
return nil, err
}
// Now that we know the size, get the actual nodes.
nodes = make([]Sysctlnode, olen/sz)
np := (*byte)(unsafe.Pointer(&nodes[0]))
if err = sysctl(mib, np, &olen, qp, sz); err != nil {
return nil, err
}
return nodes, nil
}
func nametomib(name string) (mib []_C_int, err error) {
return nil, EINVAL
// Split name into components.
var parts []string
last := 0
for i := 0; i < len(name); i++ {
if name[i] == '.' {
parts = append(parts, name[last:i])
last = i + 1
}
}
parts = append(parts, name[last:])
// Discover the nodes and construct the MIB OID.
for partno, part := range parts {
nodes, err := sysctlNodes(mib)
if err != nil {
return nil, err
}
for _, node := range nodes {
n := make([]byte, 0)
for i := range node.Name {
if node.Name[i] != 0 {
n = append(n, byte(node.Name[i]))
}
}
if string(n) == part {
mib = append(mib, _C_int(node.Num))
break
}
}
if len(mib) != partno+1 {
return nil, EINVAL
}
}
return mib, nil
}
// ParseDirent parses up to max directory entries in buf,

5
src/pkg/syscall/types_netbsd.go
View File

@ -31,6 +31,7 @@ package syscall
#include <sys/signal.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/un.h>
@ -210,3 +211,7 @@ type BpfInsn C.struct_bpf_insn
type BpfHdr C.struct_bpf_hdr
type BpfTimeval C.struct_bpf_timeval
// Sysctl
type Sysctlnode C.struct_sysctlnode

6
src/pkg/syscall/zerrors_netbsd_386.go
View File

@ -159,6 +159,7 @@ const (
CSUSP = 0x1a
CTL_MAXNAME = 0xc
CTL_NET = 0x4
CTL_QUERY = -0x2
DIOCBSFLUSH = 0x20006478
DLT_AIRONET_HEADER = 0x78
DLT_APPLE_IP_OVER_IEEE1394 = 0x8a
@ -984,6 +985,7 @@ const (
PARMRK = 0x8
PARODD = 0x2000
PENDIN = 0x20000000
PRI_IOFLUSH = 0x7c
RLIMIT_AS = 0xa
RLIMIT_CORE = 0x4
RLIMIT_CPU = 0x0
@ -1163,6 +1165,10 @@ const (
SO_TIMESTAMP = 0x2000
SO_TYPE = 0x1008
SO_USELOOPBACK = 0x40
SYSCTL_VERSION = 0x1000000
SYSCTL_VERS_0 = 0x0
SYSCTL_VERS_1 = 0x1000000
SYSCTL_VERS_MASK = 0xff000000
S_ARCH1 = 0x10000
S_ARCH2 = 0x20000
S_BLKSIZE = 0x200

6
src/pkg/syscall/zerrors_netbsd_amd64.go
View File

@ -159,6 +159,7 @@ const (
CSUSP = 0x1a
CTL_MAXNAME = 0xc
CTL_NET = 0x4
CTL_QUERY = -0x2
DIOCBSFLUSH = 0x20006478
DLT_AIRONET_HEADER = 0x78
DLT_APPLE_IP_OVER_IEEE1394 = 0x8a
@ -974,6 +975,7 @@ const (
PARMRK = 0x8
PARODD = 0x2000
PENDIN = 0x20000000
PRI_IOFLUSH = 0x7c
RLIMIT_AS = 0xa
RLIMIT_CORE = 0x4
RLIMIT_CPU = 0x0
@ -1153,6 +1155,10 @@ const (
SO_TIMESTAMP = 0x2000
SO_TYPE = 0x1008
SO_USELOOPBACK = 0x40
SYSCTL_VERSION = 0x1000000
SYSCTL_VERS_0 = 0x0
SYSCTL_VERS_1 = 0x1000000
SYSCTL_VERS_MASK = 0xff000000
S_ARCH1 = 0x10000
S_ARCH2 = 0x20000
S_BLKSIZE = 0x200

13
src/pkg/syscall/ztypes_netbsd_386.go
View File

@ -348,3 +348,16 @@ type BpfTimeval struct {
Sec int32
Usec int32
}
type Sysctlnode struct {
Flags uint32
Num int32
Name [32]int8
Ver uint32
X__rsvd uint32
Un [16]byte
X_sysctl_size [8]byte
X_sysctl_func [8]byte
X_sysctl_parent [8]byte
X_sysctl_desc [8]byte
}

13
src/pkg/syscall/ztypes_netbsd_amd64.go
View File

@ -355,3 +355,16 @@ type BpfTimeval struct {
Sec int64
Usec int64
}
type Sysctlnode struct {
Flags uint32
Num int32
Name [32]int8
Ver uint32
X__rsvd uint32
Un [16]byte
X_sysctl_size [8]byte
X_sysctl_func [8]byte
X_sysctl_parent [8]byte
X_sysctl_desc [8]byte
}