syscall: add SetsockoptIpMreq

notes:
* due to Issue 1466 the Msghdr struct for
 src/pkg/syscall/ztypes_darwin_386.go
 src/pkg/syscall/ztypes_darwin_amd64.go
had to be edited after the godefs generation.
* ztypes_*.go files for linux, freebsd and darwin
have been prepared on the correct host OS and ARCH.
While the total increase is a dozen lines per file
the diff is larger due to a change to godefs,
 http://code.google.com/p/go/source/detail?r=c79e30afe9c8
while has altered the names of Pad members which
causes gofmt to realign the affected structs

R=rsc, mikioh
CC=golang-dev
https://golang.org/cl/4119053

diff --git a/src/pkg/syscall/syscall_bsd.go b/src/pkg/syscall/syscall_bsd.go
index 3c4ac51dc0a90adeecbc6d399525ca0a24819a9b..bf62f4e310bfe6d2a048da3ad850c9e8d2e84ad5 100644 (file)
--- a/src/pkg/syscall/syscall_bsd.go
+++ b/src/pkg/syscall/syscall_bsd.go
@@ -343,6 +343,10 @@ func SetsockoptLinger(fd, level, opt int, l *Linger) (errno int) {
        return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(l)), unsafe.Sizeof(*l))
 }
 
+func SetsockoptIpMreq(fd, level, opt int, mreq *IpMreq) (errno int) {
+       return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
+}
+
 func SetsockoptString(fd, level, opt int, s string) (errno int) {
        return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&[]byte(s)[0])), len(s))
 }

diff --git a/src/pkg/syscall/syscall_linux.go b/src/pkg/syscall/syscall_linux.go
index d20c035b5ab332fe1610b7091aefb66886a611e5..30ad896461d86126043a17f1f43e29d1e697f947 100644 (file)
--- a/src/pkg/syscall/syscall_linux.go
+++ b/src/pkg/syscall/syscall_linux.go
@@ -428,6 +428,10 @@ func SetsockoptLinger(fd, level, opt int, l *Linger) (errno int) {
        return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(l)), unsafe.Sizeof(*l))
 }
 
+func SetsockoptIpMreq(fd, level, opt int, mreq *IpMreq) (errno int) {
+       return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(mreq)), unsafe.Sizeof(*mreq))
+}
+
 func SetsockoptString(fd, level, opt int, s string) (errno int) {
        return setsockopt(fd, level, opt, uintptr(unsafe.Pointer(&[]byte(s)[0])), len(s))
 }

diff --git a/src/pkg/syscall/types_darwin.c b/src/pkg/syscall/types_darwin.c
index d7f7a7460700714c83c4812c4efb8f84cc34e769..2e3a8cda6a6413f3a78e82db057599a43c5b43b7 100644 (file)
--- a/src/pkg/syscall/types_darwin.c
+++ b/src/pkg/syscall/types_darwin.c
@@ -104,6 +104,7 @@ typedef struct sockaddr_any $RawSockaddrAny;
 typedef socklen_t $_Socklen;
 typedef struct linger $Linger;
 typedef struct iovec $Iovec;
+typedef struct ip_mreq $IpMreq;
 typedef struct msghdr $Msghdr;
 typedef struct cmsghdr $Cmsghdr;
 
@@ -113,6 +114,7 @@ enum {
        $SizeofSockaddrAny = sizeof(struct sockaddr_any),
        $SizeofSockaddrUnix = sizeof(struct sockaddr_un),
        $SizeofLinger = sizeof(struct linger),
+       $SizeofIpMreq = sizeof(struct ip_mreq),
        $SizeofMsghdr = sizeof(struct msghdr),
        $SizeofCmsghdr = sizeof(struct cmsghdr),
 };

diff --git a/src/pkg/syscall/types_freebsd.c b/src/pkg/syscall/types_freebsd.c
index 13bec9f9fa76f5bbbce4d1da11dee20671ba80e9..a54c6ee33e481ca6193a9187070e1b9b96a1834a 100644 (file)
--- a/src/pkg/syscall/types_freebsd.c
+++ b/src/pkg/syscall/types_freebsd.c
@@ -116,6 +116,7 @@ typedef struct sockaddr_any $RawSockaddrAny;
 typedef socklen_t $_Socklen;
 typedef struct linger $Linger;
 typedef struct iovec $Iovec;
+typedef struct ip_mreq $IpMreq;
 typedef struct msghdr $Msghdr;
 typedef struct cmsghdr $Cmsghdr;
 
@@ -125,6 +126,7 @@ enum {
        $SizeofSockaddrAny = sizeof(struct sockaddr_any),
        $SizeofSockaddrUnix = sizeof(struct sockaddr_un),
        $SizeofLinger = sizeof(struct linger),
+       $SizeofIpMreq = sizeof(struct ip_mreq),
        $SizeofMsghdr = sizeof(struct msghdr),
        $SizeofCmsghdr = sizeof(struct cmsghdr),
 };

diff --git a/src/pkg/syscall/types_linux.c b/src/pkg/syscall/types_linux.c
index 4752e3122afc3cef17d0b92fcd24780df57a5671..ec94c84df5c9081e5566aabfdcea6c5b9d569dfa 100644 (file)
--- a/src/pkg/syscall/types_linux.c
+++ b/src/pkg/syscall/types_linux.c
@@ -109,6 +109,7 @@ typedef struct sockaddr_any $RawSockaddrAny;
 typedef socklen_t $_Socklen;
 typedef struct linger $Linger;
 typedef struct iovec $Iovec;
+typedef struct ip_mreq $IpMreq;
 typedef struct msghdr $Msghdr;
 typedef struct cmsghdr $Cmsghdr;
 typedef struct ucred $Ucred;
@@ -120,6 +121,7 @@ enum {
        $SizeofSockaddrUnix = sizeof(struct sockaddr_un),
        $SizeofSockaddrLinklayer = sizeof(struct sockaddr_ll),
        $SizeofLinger = sizeof(struct linger),
+       $SizeofIpMreq = sizeof(struct ip_mreq), 
        $SizeofMsghdr = sizeof(struct msghdr),
        $SizeofCmsghdr = sizeof(struct cmsghdr),
        $SizeofUcred = sizeof(struct ucred),

diff --git a/src/pkg/syscall/ztypes_darwin_386.go b/src/pkg/syscall/ztypes_darwin_386.go
index 708bba400fed800dea20fed287e5610051fa98a0..325c367d6d54e647470e575e00141523ab6a02e3 100644 (file)
--- a/src/pkg/syscall/ztypes_darwin_386.go
+++ b/src/pkg/syscall/ztypes_darwin_386.go
@@ -17,6 +17,7 @@ const (
        SizeofSockaddrAny   = 0x6c
        SizeofSockaddrUnix  = 0x6a
        SizeofLinger        = 0x8
+       SizeofIpMreq        = 0x8
        SizeofMsghdr        = 0x1c
        SizeofCmsghdr       = 0xc
        PTRACE_TRACEME      = 0
@@ -144,13 +145,13 @@ type Log2phys_t struct {
 }
 
 type Dirent struct {
-       Ino     uint64
-       Seekoff uint64
-       Reclen  uint16
-       Namlen  uint16
-       Type    uint8
-       Name    [1024]int8
-       Pad0    [3]byte
+       Ino          uint64
+       Seekoff      uint64
+       Reclen       uint16
+       Namlen       uint16
+       Type         uint8
+       Name         [1024]int8
+       Pad_godefs_0 [3]byte
 }
 
 type RawSockaddrInet4 struct {
@@ -199,6 +200,11 @@ type Iovec struct {
        Len  uint32
 }
 
+type IpMreq struct {
+       Multiaddr [4]byte /* in_addr */
+       Interface [4]byte /* in_addr */
+}
+
 type Msghdr struct {
        Name       *byte
        Namelen    uint32

diff --git a/src/pkg/syscall/ztypes_darwin_amd64.go b/src/pkg/syscall/ztypes_darwin_amd64.go
index 5b273768f5c9c3a95d7ff3d85b17a58eecf7c662..62615825d7cd018c761e3ffebffc229935ea03c2 100644 (file)
--- a/src/pkg/syscall/ztypes_darwin_amd64.go
+++ b/src/pkg/syscall/ztypes_darwin_amd64.go
@@ -17,6 +17,7 @@ const (
        SizeofSockaddrAny   = 0x6c
        SizeofSockaddrUnix  = 0x6a
        SizeofLinger        = 0x8
+       SizeofIpMreq        = 0x8
        SizeofMsghdr        = 0x30
        SizeofCmsghdr       = 0xc
        PTRACE_TRACEME      = 0
@@ -40,9 +41,9 @@ type Timespec struct {
 }
 
 type Timeval struct {
-       Sec  int64
-       Usec int32
-       Pad0 [4]byte
+       Sec          int64
+       Usec         int32
+       Pad_godefs_0 [4]byte
 }
 
 type Rusage struct {
@@ -79,7 +80,7 @@ type Stat_t struct {
        Uid           uint32
        Gid           uint32
        Rdev          int32
-       Pad0          [4]byte
+       Pad_godefs_0  [4]byte
        Atimespec     Timespec
        Mtimespec     Timespec
        Ctimespec     Timespec
@@ -129,9 +130,9 @@ type Fstore_t struct {
 }
 
 type Radvisory_t struct {
-       Offset int64
-       Count  int32
-       Pad0   [4]byte
+       Offset       int64
+       Count        int32
+       Pad_godefs_0 [4]byte
 }
 
 type Fbootstraptransfer_t struct {
@@ -147,13 +148,13 @@ type Log2phys_t struct {
 }
 
 type Dirent struct {
-       Ino     uint64
-       Seekoff uint64
-       Reclen  uint16
-       Namlen  uint16
-       Type    uint8
-       Name    [1024]int8
-       Pad0    [3]byte
+       Ino          uint64
+       Seekoff      uint64
+       Reclen       uint16
+       Namlen       uint16
+       Type         uint8
+       Name         [1024]int8
+       Pad_godefs_0 [3]byte
 }
 
 type RawSockaddrInet4 struct {
@@ -202,16 +203,21 @@ type Iovec struct {
        Len  uint64
 }
 
+type IpMreq struct {
+       Multiaddr [4]byte /* in_addr */
+       Interface [4]byte /* in_addr */
+}
+
 type Msghdr struct {
-       Name       *byte
-       Namelen    uint32
-       Pad0       [4]byte
-       Iov        *Iovec
-       Iovlen     int32
-       Pad1       [4]byte
-       Control    *byte
-       Controllen uint32
-       Flags      int32
+       Name         *byte
+       Namelen      uint32
+       Pad_godefs_0 [4]byte
+       Iov          *Iovec
+       Iovlen       int32
+       Pad_godefs_1 [4]byte
+       Control      *byte
+       Controllen   uint32
+       Flags        int32
 }
 
 type Cmsghdr struct {

diff --git a/src/pkg/syscall/ztypes_freebsd_386.go b/src/pkg/syscall/ztypes_freebsd_386.go
index 39e74522d5d71c28a845ead9b3f7a5fbb7b7c235..8e6e88fb176f581f0ce4fd352bab0c15a9630c7d 100644 (file)
--- a/src/pkg/syscall/ztypes_freebsd_386.go
+++ b/src/pkg/syscall/ztypes_freebsd_386.go
@@ -31,6 +31,7 @@ const (
        SizeofSockaddrAny   = 0x6c
        SizeofSockaddrUnix  = 0x6a
        SizeofLinger        = 0x8
+       SizeofIpMreq        = 0x8
        SizeofMsghdr        = 0x1c
        SizeofCmsghdr       = 0xc
        PTRACE_TRACEME      = 0
@@ -102,8 +103,8 @@ type Stat_t struct {
        Gen           uint32
        Lspare        int32
        Birthtimespec Timespec
-       Pad0          uint32
-       Pad1          uint32
+       Pad_godefs_0  uint32
+       Pad_godefs_1  uint32
 }
 
 type Statfs_t struct {
@@ -194,6 +195,11 @@ type Iovec struct {
        Len  uint32
 }
 
+type IpMreq struct {
+       Multiaddr [4]byte /* in_addr */
+       Interface [4]byte /* in_addr */
+}
+
 type Msghdr struct {
        Name       *byte
        Namelen    uint32

diff --git a/src/pkg/syscall/ztypes_freebsd_amd64.go b/src/pkg/syscall/ztypes_freebsd_amd64.go
index eea7a051755862cd80c64c4d5ff82140fc93d7b0..856191767665f8c42ee9c452253574524bbf97e0 100644 (file)
--- a/src/pkg/syscall/ztypes_freebsd_amd64.go
+++ b/src/pkg/syscall/ztypes_freebsd_amd64.go
@@ -31,6 +31,7 @@ const (
        SizeofSockaddrAny   = 0x6c
        SizeofSockaddrUnix  = 0x6a
        SizeofLinger        = 0x8
+       SizeofIpMreq        = 0x8
        SizeofMsghdr        = 0x30
        SizeofCmsghdr       = 0xc
        PTRACE_TRACEME      = 0
@@ -102,8 +103,8 @@ type Stat_t struct {
        Gen           uint32
        Lspare        int32
        Birthtimespec Timespec
-       Pad0          uint8
-       Pad1          uint8
+       Pad_godefs_0  uint8
+       Pad_godefs_1  uint8
 }
 
 type Statfs_t struct {
@@ -132,13 +133,13 @@ type Statfs_t struct {
 }
 
 type Flock_t struct {
-       Start  int64
-       Len    int64
-       Pid    int32
-       Type   int16
-       Whence int16
-       Sysid  int32
-       Pad0   [4]byte
+       Start        int64
+       Len          int64
+       Pid          int32
+       Type         int16
+       Whence       int16
+       Sysid        int32
+       Pad_godefs_0 [4]byte
 }
 
 type Dirent struct {
@@ -195,16 +196,21 @@ type Iovec struct {
        Len  uint64
 }
 
+type IpMreq struct {
+       Multiaddr [4]byte /* in_addr */
+       Interface [4]byte /* in_addr */
+}
+
 type Msghdr struct {
-       Name       *byte
-       Namelen    uint32
-       Pad0       [4]byte
-       Iov        *Iovec
-       Iovlen     int32
-       Pad1       [4]byte
-       Control    *byte
-       Controllen uint32
-       Flags      int32
+       Name         *byte
+       Namelen      uint32
+       Pad_godefs_0 [4]byte
+       Iov          *Iovec
+       Iovlen       int32
+       Pad_godefs_1 [4]byte
+       Control      *byte
+       Controllen   uint32
+       Flags        int32
 }
 
 type Cmsghdr struct {

diff --git a/src/pkg/syscall/ztypes_linux_386.go b/src/pkg/syscall/ztypes_linux_386.go
index 0603168aa50d8c2347b386a96356fe9482ba0b89..d98d6af056c74222ac5eda66d930091a1679974f 100644 (file)
--- a/src/pkg/syscall/ztypes_linux_386.go
+++ b/src/pkg/syscall/ztypes_linux_386.go
@@ -18,6 +18,7 @@ const (
        SizeofSockaddrUnix      = 0x6e
        SizeofSockaddrLinklayer = 0x14
        SizeofLinger            = 0x8
+       SizeofIpMreq            = 0x8
        SizeofMsghdr            = 0x1c
        SizeofCmsghdr           = 0xc
        SizeofUcred             = 0xc
@@ -45,37 +46,37 @@ type Timeval struct {
 }
 
 type Timex struct {
-       Modes     uint32
-       Offset    int32
-       Freq      int32
-       Maxerror  int32
-       Esterror  int32
-       Status    int32
-       Constant  int32
-       Precision int32
-       Tolerance int32
-       Time      Timeval
-       Tick      int32
-       Ppsfreq   int32
-       Jitter    int32
-       Shift     int32
-       Stabil    int32
-       Jitcnt    int32
-       Calcnt    int32
-       Errcnt    int32
-       Stbcnt    int32
-       Tai       int32
-       Pad0      int32
-       Pad1      int32
-       Pad2      int32
-       Pad3      int32
-       Pad4      int32
-       Pad5      int32
-       Pad6      int32
-       Pad7      int32
-       Pad8      int32
-       Pad9      int32
-       Pad10     int32
+       Modes         uint32
+       Offset        int32
+       Freq          int32
+       Maxerror      int32
+       Esterror      int32
+       Status        int32
+       Constant      int32
+       Precision     int32
+       Tolerance     int32
+       Time          Timeval
+       Tick          int32
+       Ppsfreq       int32
+       Jitter        int32
+       Shift         int32
+       Stabil        int32
+       Jitcnt        int32
+       Calcnt        int32
+       Errcnt        int32
+       Stbcnt        int32
+       Tai           int32
+       Pad_godefs_0  int32
+       Pad_godefs_1  int32
+       Pad_godefs_2  int32
+       Pad_godefs_3  int32
+       Pad_godefs_4  int32
+       Pad_godefs_5  int32
+       Pad_godefs_6  int32
+       Pad_godefs_7  int32
+       Pad_godefs_8  int32
+       Pad_godefs_9  int32
+       Pad_godefs_10 int32
 }
 
 type Time_t int32
@@ -119,24 +120,24 @@ type Rlimit struct {
 type _Gid_t uint32
 
 type Stat_t struct {
-       Dev       uint64
-       X__pad1   uint16
-       Pad0      [2]byte
-       X__st_ino uint32
-       Mode      uint32
-       Nlink     uint32
-       Uid       uint32
-       Gid       uint32
-       Rdev      uint64
-       X__pad2   uint16
-       Pad1      [2]byte
-       Size      int64
-       Blksize   int32
-       Blocks    int64
-       Atim      Timespec
-       Mtim      Timespec
-       Ctim      Timespec
-       Ino       uint64
+       Dev          uint64
+       X__pad1      uint16
+       Pad_godefs_0 [2]byte
+       X__st_ino    uint32
+       Mode         uint32
+       Nlink        uint32
+       Uid          uint32
+       Gid          uint32
+       Rdev         uint64
+       X__pad2      uint16
+       Pad_godefs_1 [2]byte
+       Size         int64
+       Blksize      int32
+       Blocks       int64
+       Atim         Timespec
+       Mtim         Timespec
+       Ctim         Timespec
+       Ino          uint64
 }
 
 type Statfs_t struct {
@@ -154,12 +155,12 @@ type Statfs_t struct {
 }
 
 type Dirent struct {
-       Ino    uint64
-       Off    int64
-       Reclen uint16
-       Type   uint8
-       Name   [256]int8
-       Pad0   [1]byte
+       Ino          uint64
+       Off          int64
+       Reclen       uint16
+       Type         uint8
+       Name         [256]int8
+       Pad_godefs_0 [1]byte
 }
 
 type RawSockaddrInet4 struct {
@@ -214,6 +215,11 @@ type Iovec struct {
        Len  uint32
 }
 
+type IpMreq struct {
+       Multiaddr [4]byte /* in_addr */
+       Interface [4]byte /* in_addr */
+}
+
 type Msghdr struct {
        Name       *byte
        Namelen    uint32

diff --git a/src/pkg/syscall/ztypes_linux_amd64.go b/src/pkg/syscall/ztypes_linux_amd64.go
index b975a8732052030d675b902c030a5f1d1bb246d6..db5c32cae716edc0934bb54b91b9c72974bbd89e 100644 (file)
--- a/src/pkg/syscall/ztypes_linux_amd64.go
+++ b/src/pkg/syscall/ztypes_linux_amd64.go
@@ -18,6 +18,7 @@ const (
        SizeofSockaddrUnix      = 0x6e
        SizeofSockaddrLinklayer = 0x14
        SizeofLinger            = 0x8
+       SizeofIpMreq            = 0x8
        SizeofMsghdr            = 0x38
        SizeofCmsghdr           = 0x10
        SizeofUcred             = 0xc
@@ -45,40 +46,40 @@ type Timeval struct {
 }
 
 type Timex struct {
-       Modes     uint32
-       Pad0      [4]byte
-       Offset    int64
-       Freq      int64
-       Maxerror  int64
-       Esterror  int64
-       Status    int32
-       Pad1      [4]byte
-       Constant  int64
-       Precision int64
-       Tolerance int64
-       Time      Timeval
-       Tick      int64
-       Ppsfreq   int64
-       Jitter    int64
-       Shift     int32
-       Pad2      [4]byte
-       Stabil    int64
-       Jitcnt    int64
-       Calcnt    int64
-       Errcnt    int64
-       Stbcnt    int64
-       Tai       int32
-       Pad3      int32
-       Pad4      int32
-       Pad5      int32
-       Pad6      int32
-       Pad7      int32
-       Pad8      int32
-       Pad9      int32
-       Pad10     int32
-       Pad11     int32
-       Pad12     int32
-       Pad13     int32
+       Modes         uint32
+       Pad_godefs_0  [4]byte
+       Offset        int64
+       Freq          int64
+       Maxerror      int64
+       Esterror      int64
+       Status        int32
+       Pad_godefs_1  [4]byte
+       Constant      int64
+       Precision     int64
+       Tolerance     int64
+       Time          Timeval
+       Tick          int64
+       Ppsfreq       int64
+       Jitter        int64
+       Shift         int32
+       Pad_godefs_2  [4]byte
+       Stabil        int64
+       Jitcnt        int64
+       Calcnt        int64
+       Errcnt        int64
+       Stbcnt        int64
+       Tai           int32
+       Pad_godefs_3  int32
+       Pad_godefs_4  int32
+       Pad_godefs_5  int32
+       Pad_godefs_6  int32
+       Pad_godefs_7  int32
+       Pad_godefs_8  int32
+       Pad_godefs_9  int32
+       Pad_godefs_10 int32
+       Pad_godefs_11 int32
+       Pad_godefs_12 int32
+       Pad_godefs_13 int32
 }
 
 type Time_t int64
@@ -154,12 +155,12 @@ type Statfs_t struct {
 }
 
 type Dirent struct {
-       Ino    uint64
-       Off    int64
-       Reclen uint16
-       Type   uint8
-       Name   [256]int8
-       Pad0   [5]byte
+       Ino          uint64
+       Off          int64
+       Reclen       uint16
+       Type         uint8
+       Name         [256]int8
+       Pad_godefs_0 [5]byte
 }
 
 type RawSockaddrInet4 struct {
@@ -214,16 +215,21 @@ type Iovec struct {
        Len  uint64
 }
 
+type IpMreq struct {
+       Multiaddr [4]byte /* in_addr */
+       Interface [4]byte /* in_addr */
+}
+
 type Msghdr struct {
-       Name       *byte
-       Namelen    uint32
-       Pad0       [4]byte
-       Iov        *Iovec
-       Iovlen     uint64
-       Control    *byte
-       Controllen uint64
-       Flags      int32
-       Pad1       [4]byte
+       Name         *byte
+       Namelen      uint32
+       Pad_godefs_0 [4]byte
+       Iov          *Iovec
+       Iovlen       uint64
+       Control      *byte
+       Controllen   uint64
+       Flags        int32
+       Pad_godefs_1 [4]byte
 }
 
 type Cmsghdr struct {
@@ -280,22 +286,22 @@ type FdSet struct {
 }
 
 type Sysinfo_t struct {
-       Uptime    int64
-       Loads     [3]uint64
-       Totalram  uint64
-       Freeram   uint64
-       Sharedram uint64
-       Bufferram uint64
-       Totalswap uint64
-       Freeswap  uint64
-       Procs     uint16
-       Pad       uint16
-       Pad0      [4]byte
-       Totalhigh uint64
-       Freehigh  uint64
-       Unit      uint32
-       X_f       [2]int8
-       Pad1      [4]byte
+       Uptime       int64
+       Loads        [3]uint64
+       Totalram     uint64
+       Freeram      uint64
+       Sharedram    uint64
+       Bufferram    uint64
+       Totalswap    uint64
+       Freeswap     uint64
+       Procs        uint16
+       Pad          uint16
+       Pad_godefs_0 [4]byte
+       Totalhigh    uint64
+       Freehigh     uint64
+       Unit         uint32
+       X_f          [0]int8
+       Pad_godefs_1 [4]byte
 }
 
 type Utsname struct {
@@ -308,12 +314,12 @@ type Utsname struct {
 }
 
 type Ustat_t struct {
-       Tfree  int32
-       Pad0   [4]byte
-       Tinode uint64
-       Fname  [6]int8
-       Fpack  [6]int8
-       Pad1   [4]byte
+       Tfree        int32
+       Pad_godefs_0 [4]byte
+       Tinode       uint64
+       Fname        [6]int8
+       Fpack        [6]int8
+       Pad_godefs_1 [4]byte
 }
 
 type EpollEvent struct {