diff --git a/unix/mkpost.go b/unix/mkpost.go index f1a92dd1..42000693 100644 --- a/unix/mkpost.go +++ b/unix/mkpost.go @@ -50,6 +50,21 @@ func main() { b = sttimespec.ReplaceAll(b, []byte("Timespec")) } + if goos == "darwin" { + // KinfoProc contains various pointers to objects stored + // in kernel space. Replace these by uintptr to prevent + // accidental dereferencing. + kinfoProcPointerRegex := regexp.MustCompile(`\*_Ctype_struct_(pgrp|proc|session|sigacts|ucred|user|vnode)`) + b = kinfoProcPointerRegex.ReplaceAll(b, []byte("uintptr")) + + // ExternProc contains a p_un member that in kernel + // space stores a pair of pointers and in user space + // stores the process creation time. We only care about + // the process creation time. + externProcStarttimeRegex := regexp.MustCompile(`P_un\s*\[\d+\]byte`) + b = externProcStarttimeRegex.ReplaceAll(b, []byte("P_starttime Timeval")) + } + // Intentionally export __val fields in Fsid and Sigset_t valRegex := regexp.MustCompile(`type (Fsid|Sigset_t) struct {(\s+)X__(bits|val)(\s+\S+\s+)}`) b = valRegex.ReplaceAll(b, []byte("type $1 struct {${2}Val$4}")) diff --git a/unix/syscall_darwin.go b/unix/syscall_darwin.go index 9945e5f9..23f6b576 100644 --- a/unix/syscall_darwin.go +++ b/unix/syscall_darwin.go @@ -13,6 +13,7 @@ package unix import ( + "fmt" "runtime" "syscall" "unsafe" @@ -398,6 +399,38 @@ func GetsockoptXucred(fd, level, opt int) (*Xucred, error) { return x, err } +func SysctlKinfoProcSlice(name string) ([]KinfoProc, error) { + mib, err := sysctlmib(name) + if err != nil { + return nil, err + } + + // Find size. + n := uintptr(0) + if err := sysctl(mib, nil, &n, nil, 0); err != nil { + return nil, err + } + if n == 0 { + return nil, nil + } + if n%SizeofKinfoProc != 0 { + return nil, fmt.Errorf("sysctl() returned a size of %d, which is not a multiple of %d", n, SizeofKinfoProc) + } + + // Read into buffer of that size. + buf := make([]KinfoProc, n/SizeofKinfoProc) + if err := sysctl(mib, (*byte)(unsafe.Pointer(&buf[0])), &n, nil, 0); err != nil { + return nil, err + } + if n%SizeofKinfoProc != 0 { + return nil, fmt.Errorf("sysctl() returned a size of %d, which is not a multiple of %d", n, SizeofKinfoProc) + } + + // The actual call may return less than the original reported required + // size so ensure we deal with that. + return buf[:n/SizeofKinfoProc], nil +} + //sys sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error) /* diff --git a/unix/types_darwin.go b/unix/types_darwin.go index e65c0de2..0b13f935 100644 --- a/unix/types_darwin.go +++ b/unix/types_darwin.go @@ -37,6 +37,7 @@ package unix #include #include #include +#include #include #include #include @@ -304,3 +305,21 @@ type Clockinfo C.struct_clockinfo // ctl_info type CtlInfo C.struct_ctl_info + +// KinfoProc + +const SizeofKinfoProc = C.sizeof_struct_kinfo_proc + +type Eproc C.struct_eproc + +type ExternProc C.struct_extern_proc + +type Itimerval C.struct_itimerval + +type KinfoProc C.struct_kinfo_proc + +type Vmspace C.struct_vmspace + +type Pcred C.struct__pcred + +type Ucred C.struct__ucred diff --git a/unix/ztypes_darwin_amd64.go b/unix/ztypes_darwin_amd64.go index 2673e6c5..4c8dc0ba 100644 --- a/unix/ztypes_darwin_amd64.go +++ b/unix/ztypes_darwin_amd64.go @@ -535,3 +535,107 @@ type CtlInfo struct { Id uint32 Name [96]byte } + +const SizeofKinfoProc = 0x288 + +type Eproc struct { + Paddr uintptr + Sess uintptr + Pcred Pcred + Ucred Ucred + Vm Vmspace + Ppid int32 + Pgid int32 + Jobc int16 + Tdev int32 + Tpgid int32 + Tsess uintptr + Wmesg [8]int8 + Xsize int32 + Xrssize int16 + Xccount int16 + Xswrss int16 + Flag int32 + Login [12]int8 + Spare [4]int32 + _ [4]byte +} + +type ExternProc struct { + P_starttime Timeval + P_vmspace *Vmspace + P_sigacts uintptr + P_flag int32 + P_stat int8 + P_pid int32 + P_oppid int32 + P_dupfd int32 + User_stack *int8 + Exit_thread *byte + P_debugger int32 + Sigwait int32 + P_estcpu uint32 + P_cpticks int32 + P_pctcpu uint32 + P_wchan *byte + P_wmesg *int8 + P_swtime uint32 + P_slptime uint32 + P_realtimer Itimerval + P_rtime Timeval + P_uticks uint64 + P_sticks uint64 + P_iticks uint64 + P_traceflag int32 + P_tracep uintptr + P_siglist int32 + P_textvp uintptr + P_holdcnt int32 + P_sigmask uint32 + P_sigignore uint32 + P_sigcatch uint32 + P_priority uint8 + P_usrpri uint8 + P_nice int8 + P_comm [17]int8 + P_pgrp uintptr + P_addr uintptr + P_xstat uint16 + P_acflag uint16 + P_ru *Rusage +} + +type Itimerval struct { + Interval Timeval + Value Timeval +} + +type KinfoProc struct { + Proc ExternProc + Eproc Eproc +} + +type Vmspace struct { + Dummy int32 + Dummy2 *int8 + Dummy3 [5]int32 + Dummy4 [3]*int8 +} + +type Pcred struct { + Pc_lock [72]int8 + Pc_ucred uintptr + P_ruid uint32 + P_svuid uint32 + P_rgid uint32 + P_svgid uint32 + P_refcnt int32 + _ [4]byte +} + +type Ucred struct { + Ref int32 + Uid uint32 + Ngroups int16 + Groups [16]uint32 +} diff --git a/unix/ztypes_darwin_arm64.go b/unix/ztypes_darwin_arm64.go index 1465cbcf..96f0e6ae 100644 --- a/unix/ztypes_darwin_arm64.go +++ b/unix/ztypes_darwin_arm64.go @@ -535,3 +535,107 @@ type CtlInfo struct { Id uint32 Name [96]byte } + +const SizeofKinfoProc = 0x288 + +type Eproc struct { + Paddr uintptr + Sess uintptr + Pcred Pcred + Ucred Ucred + Vm Vmspace + Ppid int32 + Pgid int32 + Jobc int16 + Tdev int32 + Tpgid int32 + Tsess uintptr + Wmesg [8]int8 + Xsize int32 + Xrssize int16 + Xccount int16 + Xswrss int16 + Flag int32 + Login [12]int8 + Spare [4]int32 + _ [4]byte +} + +type ExternProc struct { + P_starttime Timeval + P_vmspace *Vmspace + P_sigacts uintptr + P_flag int32 + P_stat int8 + P_pid int32 + P_oppid int32 + P_dupfd int32 + User_stack *int8 + Exit_thread *byte + P_debugger int32 + Sigwait int32 + P_estcpu uint32 + P_cpticks int32 + P_pctcpu uint32 + P_wchan *byte + P_wmesg *int8 + P_swtime uint32 + P_slptime uint32 + P_realtimer Itimerval + P_rtime Timeval + P_uticks uint64 + P_sticks uint64 + P_iticks uint64 + P_traceflag int32 + P_tracep uintptr + P_siglist int32 + P_textvp uintptr + P_holdcnt int32 + P_sigmask uint32 + P_sigignore uint32 + P_sigcatch uint32 + P_priority uint8 + P_usrpri uint8 + P_nice int8 + P_comm [17]int8 + P_pgrp uintptr + P_addr uintptr + P_xstat uint16 + P_acflag uint16 + P_ru *Rusage +} + +type Itimerval struct { + Interval Timeval + Value Timeval +} + +type KinfoProc struct { + Proc ExternProc + Eproc Eproc +} + +type Vmspace struct { + Dummy int32 + Dummy2 *int8 + Dummy3 [5]int32 + Dummy4 [3]*int8 +} + +type Pcred struct { + Pc_lock [72]int8 + Pc_ucred uintptr + P_ruid uint32 + P_svuid uint32 + P_rgid uint32 + P_svgid uint32 + P_refcnt int32 + _ [4]byte +} + +type Ucred struct { + Ref int32 + Uid uint32 + Ngroups int16 + Groups [16]uint32 +}