diff options
Diffstat (limited to 'pkg/sentry/platform/ring0/defs.go')
| -rw-r--r-- | pkg/sentry/platform/ring0/defs.go | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/pkg/sentry/platform/ring0/defs.go b/pkg/sentry/platform/ring0/defs.go index 18137e55d..98d0a6de0 100644 --- a/pkg/sentry/platform/ring0/defs.go +++ b/pkg/sentry/platform/ring0/defs.go @@ -38,6 +38,33 @@ type Kernel struct { KernelArchState } +// Hooks are hooks for kernel functions. +type Hooks interface { + // KernelSyscall is called for kernel system calls. + // + // Return from this call will restore registers and return to the kernel: the + // registers must be modified directly. + // + // If this function is not provided, a kernel exception results in halt. + // + // This must be go:nosplit, as this will be on the interrupt stack. + // Closures are permitted, as the pointer to the closure frame is not + // passed on the stack. + KernelSyscall() + + // KernelException handles an exception during kernel execution. + // + // Return from this call will restore registers and return to the kernel: the + // registers must be modified directly. + // + // If this function is not provided, a kernel exception results in halt. + // + // This must be go:nosplit, as this will be on the interrupt stack. + // Closures are permitted, as the pointer to the closure frame is not + // passed on the stack. + KernelException(Vector) +} + // CPU is the per-CPU struct. type CPU struct { // self is a self reference. @@ -58,29 +85,8 @@ type CPU struct { // calls and exceptions via the Registers function. registers syscall.PtraceRegs - // KernelException handles an exception during kernel execution. - // - // Return from this call will restore registers and return to the kernel: the - // registers must be modified directly. - // - // If this function is not provided, a kernel exception results in halt. - // - // This must be go:nosplit, as this will be on the interrupt stack. - // Closures are permitted, as the pointer to the closure frame is not - // passed on the stack. - KernelException func(Vector) - - // KernelSyscall is called for kernel system calls. - // - // Return from this call will restore registers and return to the kernel: the - // registers must be modified directly. - // - // If this function is not provided, a kernel exception results in halt. - // - // This must be go:nosplit, as this will be on the interrupt stack. - // Closures are permitted, as the pointer to the closure frame is not - // passed on the stack. - KernelSyscall func() + // hooks are kernel hooks. + hooks Hooks } // Registers returns a modifiable-copy of the kernel registers. |