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Diffstat (limited to 'pkg/sentry/arch/signal.go')
-rw-r--r--pkg/sentry/arch/signal.go232
1 files changed, 0 insertions, 232 deletions
diff --git a/pkg/sentry/arch/signal.go b/pkg/sentry/arch/signal.go
deleted file mode 100644
index b9fd14d10..000000000
--- a/pkg/sentry/arch/signal.go
+++ /dev/null
@@ -1,232 +0,0 @@
-// Copyright 2020 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package arch
-
-import (
- "gvisor.dev/gvisor/pkg/abi/linux"
- "gvisor.dev/gvisor/pkg/hostarch"
-)
-
-// SignalInfo represents information about a signal being delivered, and is
-// equivalent to struct siginfo in linux kernel(linux/include/uapi/asm-generic/siginfo.h).
-//
-// +marshal
-// +stateify savable
-type SignalInfo struct {
- Signo int32 // Signal number
- Errno int32 // Errno value
- Code int32 // Signal code
- _ uint32
-
- // struct siginfo::_sifields is a union. In SignalInfo, fields in the union
- // are accessed through methods.
- //
- // For reference, here is the definition of _sifields: (_sigfault._trapno,
- // which does not exist on x86, omitted for clarity)
- //
- // union {
- // int _pad[SI_PAD_SIZE];
- //
- // /* kill() */
- // struct {
- // __kernel_pid_t _pid; /* sender's pid */
- // __ARCH_SI_UID_T _uid; /* sender's uid */
- // } _kill;
- //
- // /* POSIX.1b timers */
- // struct {
- // __kernel_timer_t _tid; /* timer id */
- // int _overrun; /* overrun count */
- // char _pad[sizeof( __ARCH_SI_UID_T) - sizeof(int)];
- // sigval_t _sigval; /* same as below */
- // int _sys_private; /* not to be passed to user */
- // } _timer;
- //
- // /* POSIX.1b signals */
- // struct {
- // __kernel_pid_t _pid; /* sender's pid */
- // __ARCH_SI_UID_T _uid; /* sender's uid */
- // sigval_t _sigval;
- // } _rt;
- //
- // /* SIGCHLD */
- // struct {
- // __kernel_pid_t _pid; /* which child */
- // __ARCH_SI_UID_T _uid; /* sender's uid */
- // int _status; /* exit code */
- // __ARCH_SI_CLOCK_T _utime;
- // __ARCH_SI_CLOCK_T _stime;
- // } _sigchld;
- //
- // /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
- // struct {
- // void *_addr; /* faulting insn/memory ref. */
- // short _addr_lsb; /* LSB of the reported address */
- // } _sigfault;
- //
- // /* SIGPOLL */
- // struct {
- // __ARCH_SI_BAND_T _band; /* POLL_IN, POLL_OUT, POLL_MSG */
- // int _fd;
- // } _sigpoll;
- //
- // /* SIGSYS */
- // struct {
- // void *_call_addr; /* calling user insn */
- // int _syscall; /* triggering system call number */
- // unsigned int _arch; /* AUDIT_ARCH_* of syscall */
- // } _sigsys;
- // } _sifields;
- //
- // _sifields is padded so that the size of siginfo is SI_MAX_SIZE = 128
- // bytes.
- Fields [128 - 16]byte
-}
-
-// FixSignalCodeForUser fixes up si_code.
-//
-// The si_code we get from Linux may contain the kernel-specific code in the
-// top 16 bits if it's positive (e.g., from ptrace). Linux's
-// copy_siginfo_to_user does
-// err |= __put_user((short)from->si_code, &to->si_code);
-// to mask out those bits and we need to do the same.
-func (s *SignalInfo) FixSignalCodeForUser() {
- if s.Code > 0 {
- s.Code &= 0x0000ffff
- }
-}
-
-// PID returns the si_pid field.
-func (s *SignalInfo) PID() int32 {
- return int32(hostarch.ByteOrder.Uint32(s.Fields[0:4]))
-}
-
-// SetPID mutates the si_pid field.
-func (s *SignalInfo) SetPID(val int32) {
- hostarch.ByteOrder.PutUint32(s.Fields[0:4], uint32(val))
-}
-
-// UID returns the si_uid field.
-func (s *SignalInfo) UID() int32 {
- return int32(hostarch.ByteOrder.Uint32(s.Fields[4:8]))
-}
-
-// SetUID mutates the si_uid field.
-func (s *SignalInfo) SetUID(val int32) {
- hostarch.ByteOrder.PutUint32(s.Fields[4:8], uint32(val))
-}
-
-// Sigval returns the sigval field, which is aliased to both si_int and si_ptr.
-func (s *SignalInfo) Sigval() uint64 {
- return hostarch.ByteOrder.Uint64(s.Fields[8:16])
-}
-
-// SetSigval mutates the sigval field.
-func (s *SignalInfo) SetSigval(val uint64) {
- hostarch.ByteOrder.PutUint64(s.Fields[8:16], val)
-}
-
-// TimerID returns the si_timerid field.
-func (s *SignalInfo) TimerID() linux.TimerID {
- return linux.TimerID(hostarch.ByteOrder.Uint32(s.Fields[0:4]))
-}
-
-// SetTimerID sets the si_timerid field.
-func (s *SignalInfo) SetTimerID(val linux.TimerID) {
- hostarch.ByteOrder.PutUint32(s.Fields[0:4], uint32(val))
-}
-
-// Overrun returns the si_overrun field.
-func (s *SignalInfo) Overrun() int32 {
- return int32(hostarch.ByteOrder.Uint32(s.Fields[4:8]))
-}
-
-// SetOverrun sets the si_overrun field.
-func (s *SignalInfo) SetOverrun(val int32) {
- hostarch.ByteOrder.PutUint32(s.Fields[4:8], uint32(val))
-}
-
-// Addr returns the si_addr field.
-func (s *SignalInfo) Addr() uint64 {
- return hostarch.ByteOrder.Uint64(s.Fields[0:8])
-}
-
-// SetAddr sets the si_addr field.
-func (s *SignalInfo) SetAddr(val uint64) {
- hostarch.ByteOrder.PutUint64(s.Fields[0:8], val)
-}
-
-// Status returns the si_status field.
-func (s *SignalInfo) Status() int32 {
- return int32(hostarch.ByteOrder.Uint32(s.Fields[8:12]))
-}
-
-// SetStatus mutates the si_status field.
-func (s *SignalInfo) SetStatus(val int32) {
- hostarch.ByteOrder.PutUint32(s.Fields[8:12], uint32(val))
-}
-
-// CallAddr returns the si_call_addr field.
-func (s *SignalInfo) CallAddr() uint64 {
- return hostarch.ByteOrder.Uint64(s.Fields[0:8])
-}
-
-// SetCallAddr mutates the si_call_addr field.
-func (s *SignalInfo) SetCallAddr(val uint64) {
- hostarch.ByteOrder.PutUint64(s.Fields[0:8], val)
-}
-
-// Syscall returns the si_syscall field.
-func (s *SignalInfo) Syscall() int32 {
- return int32(hostarch.ByteOrder.Uint32(s.Fields[8:12]))
-}
-
-// SetSyscall mutates the si_syscall field.
-func (s *SignalInfo) SetSyscall(val int32) {
- hostarch.ByteOrder.PutUint32(s.Fields[8:12], uint32(val))
-}
-
-// Arch returns the si_arch field.
-func (s *SignalInfo) Arch() uint32 {
- return hostarch.ByteOrder.Uint32(s.Fields[12:16])
-}
-
-// SetArch mutates the si_arch field.
-func (s *SignalInfo) SetArch(val uint32) {
- hostarch.ByteOrder.PutUint32(s.Fields[12:16], val)
-}
-
-// Band returns the si_band field.
-func (s *SignalInfo) Band() int64 {
- return int64(hostarch.ByteOrder.Uint64(s.Fields[0:8]))
-}
-
-// SetBand mutates the si_band field.
-func (s *SignalInfo) SetBand(val int64) {
- // Note: this assumes the platform uses `long` as `__ARCH_SI_BAND_T`.
- // On some platforms, which gVisor doesn't support, `__ARCH_SI_BAND_T` is
- // `int`. See siginfo.h.
- hostarch.ByteOrder.PutUint64(s.Fields[0:8], uint64(val))
-}
-
-// FD returns the si_fd field.
-func (s *SignalInfo) FD() uint32 {
- return hostarch.ByteOrder.Uint32(s.Fields[8:12])
-}
-
-// SetFD mutates the si_fd field.
-func (s *SignalInfo) SetFD(val uint32) {
- hostarch.ByteOrder.PutUint32(s.Fields[8:12], val)
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 16:39:45 +0000