add epoll_ctl

Author: SeeFlowerX

src/types.h

@@ -56,6 +56,7 @@ enum arg_type_e
 	TYPE_SOCKADDR,
 	TYPE_RUSAGE,
 	TYPE_IOVEC,
+	TYPE_EPOLLEVENT,
 	TYPE_SIGSET,
 	TYPE_POLLFD,
 	TYPE_ARGASSIZE,

user/config/config_syscall.go

@@ -205,6 +205,7 @@ const (
 	TYPE_SOCKADDR
 	TYPE_RUSAGE
 	TYPE_IOVEC
+	TYPE_EPOLLEVENT
 	TYPE_SIGSET
 	TYPE_POLLFD
 	TYPE_ARGASSIZE
@@ -232,6 +233,7 @@ var UTSNAME = ArgType{TYPE_UTSNAME, TYPE_STRUCT, uint32(unsafe.Sizeof(syscall.Ut
 var SOCKADDR = ArgType{TYPE_SOCKADDR, TYPE_STRUCT, uint32(unsafe.Sizeof(syscall.RawSockaddrAny{}))}
 var RUSAGE = ArgType{TYPE_RUSAGE, TYPE_STRUCT, uint32(unsafe.Sizeof(syscall.Rusage{}))}
 var IOVEC = ArgType{TYPE_IOVEC, TYPE_STRUCT, uint32(unsafe.Sizeof(syscall.Iovec{}))}
+var EPOLLEVENT = ArgType{TYPE_EPOLLEVENT, TYPE_STRUCT, uint32(unsafe.Sizeof(syscall.EpollEvent{}))}
 
 // 64 位下这个是 unsigned long sig[_NSIG_WORDS]
 // #define _NSIG       64
@@ -259,6 +261,7 @@ func init() {
 	Register(&SArgs{9, PA("lgetxattr", []PArg{A("path", STRING), A("name", STRING), A("value", POINTER), A("size", INT)})})
 	Register(&SArgs{10, PA("fgetxattr", []PArg{A("fd", INT), A("name", STRING), A("value", POINTER), A("size", INT)})})
 	Register(&SArgs{17, PA("getcwd", []PArg{B("buf", STRING), A("size", UINT64)})})
+	Register(&SArgs{21, PA("epoll_ctl", []PArg{A("epfd", INT), A("op", INT), A("fd", INT), A("event", EPOLLEVENT)})})
 	Register(&SArgs{22, PA("epoll_pwait", []PArg{A("epfd", INT), A("events", POINTER), A("maxevents", INT), A("timeout", INT)})})
 	Register(&SArgs{23, PA("dup", []PArg{A("oldfd", INT)})})
 	Register(&SArgs{24, PA("dup3", []PArg{A("oldfd", INT), A("newfd", UINT64), A("flags", INT)})})

user/event/event_raw_syscalls.go

@@ -169,6 +169,21 @@ func (this *Arg_Iovec) Format() string {
     return fmt.Sprintf("iovec{%s}", strings.Join(fields, ", "))
 }
 
+type Arg_EpollEvent struct {
+    Index uint8
+    Len   uint32
+    syscall.EpollEvent
+}
+
+func (this *Arg_EpollEvent) Format() string {
+    var fields []string
+    fields = append(fields, fmt.Sprintf("events=0x%x", this.Events))
+    fields = append(fields, fmt.Sprintf("_=*"))
+    fields = append(fields, fmt.Sprintf("fd=%d", this.Fd))
+    fields = append(fields, fmt.Sprintf("pad=%d", this.Pad))
+    return fmt.Sprintf("epollevent{%s}", strings.Join(fields, ", "))
+}
+
 type Arg_Rusage struct {
     Index uint8
     Len   uint32
@@ -381,6 +396,18 @@ func (this *SyscallEvent) ParseArg(point_arg *config.PointArg, ptr Arg_reg) (err
             arg_fmt = "NULL"
         }
         point_arg.AppendValue(fmt.Sprintf("(%s)", arg_fmt))
+    case config.TYPE_EPOLLEVENT:
+        var arg_fmt string
+        if ptr.Address != 0 {
+            var arg_epollevent Arg_EpollEvent
+            if err = binary.Read(this.buf, binary.LittleEndian, &arg_epollevent); err != nil {
+                panic(fmt.Sprintf("binary.Read err:%v", err))
+            }
+            arg_fmt = arg_epollevent.Format()
+        } else {
+            arg_fmt = "NULL"
+        }
+        point_arg.AppendValue(fmt.Sprintf("(%s)", arg_fmt))
     default:
         panic(fmt.Sprintf("unknown point_arg.AliasType %d", point_arg.AliasType))
     }