syscall: implement Pipe using pipe2 syscall on all linux platforms

Most architectures currently already implement Pipe using the pipe2
syscall. Only 386, amd64 and mips{,le} still use the pipe syscall.
However, some systems (e.g. Android seccomp policies) block that
syscall, see #40828 for an example.

The pipe2 syscall was added in Linux kernel version 2.6.27. The minimum
required Linux kernel version for Go 1.18 will be changed to 2.6.32
per #45964 so it is possible to unify the implementation of Pipe using
the pipe2 syscall.

For #45964

Change-Id: I8ed6a391300c95f3107b4ec6b27d320e42fb535b
Reviewed-on: https://go-review.googlesource.com/c/go/+/350530
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

diff --git a/src/syscall/syscall_linux.go b/src/syscall/syscall_linux.go
index 6d428d58ddb108cd26dc88a4e5fc961562734f48..f02fa45a894c1e2dc247cfa20a64a5454803409c 100644 (file)
--- a/src/syscall/syscall_linux.go
+++ b/src/syscall/syscall_linux.go
@@ -161,6 +161,23 @@ func Openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
        return openat(dirfd, path, flags|O_LARGEFILE, mode)
 }
 
+func Pipe(p []int) error {
+       return Pipe2(p, 0)
+}
+
+//sysnb pipe2(p *[2]_C_int, flags int) (err error)
+
+func Pipe2(p []int, flags int) error {
+       if len(p) != 2 {
+               return EINVAL
+       }
+       var pp [2]_C_int
+       err := pipe2(&pp, flags)
+       p[0] = int(pp[0])
+       p[1] = int(pp[1])
+       return err
+}
+
 //sys  readlinkat(dirfd int, path string, buf []byte) (n int, err error)
 
 func Readlink(path string, buf []byte) (n int, err error) {

diff --git a/src/syscall/syscall_linux_386.go b/src/syscall/syscall_linux_386.go
index 0db037470d438761c4c290d27384aafe43c7eda2..98442055d80ea7c5c6837c5891bb6e7726c88722 100644 (file)
--- a/src/syscall/syscall_linux_386.go
+++ b/src/syscall/syscall_linux_386.go
@@ -22,32 +22,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: int32(sec), Usec: int32(usec)}
 }
 
-//sysnb        pipe(p *[2]_C_int) (err error)
-
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe(&pp)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 // 64-bit file system and 32-bit uid calls
 // (386 default is 32-bit file system and 16-bit uid).
 //sys  Dup2(oldfd int, newfd int) (err error)

diff --git a/src/syscall/syscall_linux_amd64.go b/src/syscall/syscall_linux_amd64.go
index 5df3f796d1677785114bad853ae8479e8fee83b6..04acd063fa69e407184f67a8394e088732f43f4f 100644 (file)
--- a/src/syscall/syscall_linux_amd64.go
+++ b/src/syscall/syscall_linux_amd64.go
@@ -110,32 +110,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: sec, Usec: usec}
 }
 
-//sysnb        pipe(p *[2]_C_int) (err error)
-
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe(&pp)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 func (r *PtraceRegs) PC() uint64 { return r.Rip }
 
 func (r *PtraceRegs) SetPC(pc uint64) { r.Rip = pc }

diff --git a/src/syscall/syscall_linux_arm.go b/src/syscall/syscall_linux_arm.go
index fffa4b29b96ff89ce844343dd8fc029cde45dc98..f2f342e7ed25ed485ec12a187308f82825c3d516 100644 (file)
--- a/src/syscall/syscall_linux_arm.go
+++ b/src/syscall/syscall_linux_arm.go
@@ -22,32 +22,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: int32(sec), Usec: int32(usec)}
 }
 
-//sysnb pipe(p *[2]_C_int) (err error)
-
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, 0)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 // Underlying system call writes to newoffset via pointer.
 // Implemented in assembly to avoid allocation.
 func seek(fd int, offset int64, whence int) (newoffset int64, err Errno)

diff --git a/src/syscall/syscall_linux_arm64.go b/src/syscall/syscall_linux_arm64.go
index 517723ae471e7813f99111ffde38a31006b3c873..990e732f359f0404654bd076cdcc9aee9482359f 100644 (file)
--- a/src/syscall/syscall_linux_arm64.go
+++ b/src/syscall/syscall_linux_arm64.go
@@ -145,30 +145,6 @@ func utimes(path string, tv *[2]Timeval) (err error) {
        return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
 }
 
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, 0)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 // Getrlimit prefers the prlimit64 system call. See issue 38604.
 func Getrlimit(resource int, rlim *Rlimit) error {
        err := prlimit(0, resource, nil, rlim)

diff --git a/src/syscall/syscall_linux_mips64x.go b/src/syscall/syscall_linux_mips64x.go
index 5feb03e915adf0021f5060b2fa6e5b88d9b973b7..fa0d2799ed3581fc16a0eecb8a6a7a193982c28c 100644 (file)
--- a/src/syscall/syscall_linux_mips64x.go
+++ b/src/syscall/syscall_linux_mips64x.go
@@ -103,30 +103,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: sec, Usec: usec}
 }
 
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, 0)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 func Ioperm(from int, num int, on int) (err error) {
        return ENOSYS
 }

diff --git a/src/syscall/syscall_linux_mipsx.go b/src/syscall/syscall_linux_mipsx.go
index 39104d71d84520f8fe6dd3bb17d8944635354318..568523eb27d3e647ba696e63f8d49af8e906e040 100644 (file)
--- a/src/syscall/syscall_linux_mipsx.go
+++ b/src/syscall/syscall_linux_mipsx.go
@@ -112,29 +112,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: int32(sec), Usec: int32(usec)}
 }
 
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe() (p1 int, p2 int, err error)
-
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       p[0], p[1], err = pipe()
-       return
-}
-
 //sys  mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
 
 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {

diff --git a/src/syscall/syscall_linux_ppc64x.go b/src/syscall/syscall_linux_ppc64x.go
index 495ae29757cac649b2a3b9cb754a0be19d1ff1e2..3e73f6f2a4c8d123447e5fc2008c31fe8666508f 100644 (file)
--- a/src/syscall/syscall_linux_ppc64x.go
+++ b/src/syscall/syscall_linux_ppc64x.go
@@ -82,30 +82,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: sec, Usec: usec}
 }
 
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, 0)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 func (r *PtraceRegs) PC() uint64 { return r.Nip }
 
 func (r *PtraceRegs) SetPC(pc uint64) { r.Nip = pc }

diff --git a/src/syscall/syscall_linux_riscv64.go b/src/syscall/syscall_linux_riscv64.go
index 2a0fe64d258617a8dc147d17d55cc8d205e0905b..bcb89c6e9aca20b63d42246ff7cb3bc5f2faa3b0 100644 (file)
--- a/src/syscall/syscall_linux_riscv64.go
+++ b/src/syscall/syscall_linux_riscv64.go
@@ -149,30 +149,6 @@ func utimes(path string, tv *[2]Timeval) (err error) {
        return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
 }
 
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, 0)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 func (r *PtraceRegs) PC() uint64 { return r.Pc }
 
 func (r *PtraceRegs) SetPC(pc uint64) { r.Pc = pc }

diff --git a/src/syscall/syscall_linux_s390x.go b/src/syscall/syscall_linux_s390x.go
index 0f6f6277bbfda2b02aab58268b77ce9b796c2097..123664f5b2b98acf760310c11eef871eb10b3fdb 100644 (file)
--- a/src/syscall/syscall_linux_s390x.go
+++ b/src/syscall/syscall_linux_s390x.go
@@ -74,30 +74,6 @@ func setTimeval(sec, usec int64) Timeval {
        return Timeval{Sec: sec, Usec: usec}
 }
 
-func Pipe(p []int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, 0)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
-//sysnb pipe2(p *[2]_C_int, flags int) (err error)
-
-func Pipe2(p []int, flags int) (err error) {
-       if len(p) != 2 {
-               return EINVAL
-       }
-       var pp [2]_C_int
-       err = pipe2(&pp, flags)
-       p[0] = int(pp[0])
-       p[1] = int(pp[1])
-       return
-}
-
 // Linux on s390x uses the old mmap interface, which requires arguments to be passed in a struct.
 // mmap2 also requires arguments to be passed in a struct; it is currently not exposed in <asm/unistd.h>.
 func mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) {

diff --git a/src/syscall/zsyscall_linux_386.go b/src/syscall/zsyscall_linux_386.go
index ac822d6f7a435dde180689e7f217f90e1c972cd8..a1394d32cb6efc57047b624ffe57d159e78cbae1 100644 (file)
--- a/src/syscall/zsyscall_linux_386.go
+++ b/src/syscall/zsyscall_linux_386.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1048,26 +1058,6 @@ func Munlockall() (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe(p *[2]_C_int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func Dup2(oldfd int, newfd int) (err error) {
        _, _, e1 := Syscall(SYS_DUP2, uintptr(oldfd), uintptr(newfd), 0)
        if e1 != 0 {

diff --git a/src/syscall/zsyscall_linux_amd64.go b/src/syscall/zsyscall_linux_amd64.go
index ed37fa8decaa08bb6d3f6416ba623176654424d8..de6047d11c9dc566d7cd752c8dbb8ee168f56d1a 100644 (file)
--- a/src/syscall/zsyscall_linux_amd64.go
+++ b/src/syscall/zsyscall_linux_amd64.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1644,23 +1654,3 @@ func utimes(path string, times *[2]Timeval) (err error) {
        }
        return
 }
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe(p *[2]_C_int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}

diff --git a/src/syscall/zsyscall_linux_arm.go b/src/syscall/zsyscall_linux_arm.go
index 213aaf3bac40a18ab11647ee6e3ebbb16c3dbf81..3663b2eead1a6b2641ff84255456f1cad78b2763 100644 (file)
--- a/src/syscall/zsyscall_linux_arm.go
+++ b/src/syscall/zsyscall_linux_arm.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1048,26 +1058,6 @@ func Munlockall() (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe(p *[2]_C_int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE, uintptr(unsafe.Pointer(p)), 0, 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func accept(s int, rsa *RawSockaddrAny, addrlen *_Socklen) (fd int, err error) {
        r0, _, e1 := Syscall(SYS_ACCEPT, uintptr(s), uintptr(unsafe.Pointer(rsa)), uintptr(unsafe.Pointer(addrlen)))
        fd = int(r0)

diff --git a/src/syscall/zsyscall_linux_arm64.go b/src/syscall/zsyscall_linux_arm64.go
index e2f9c0fd9b06e2cd0d60fbdb8dc8ce6170698001..19a9c0ca6133c1f42bb28912ee8300db0eaa0be6 100644 (file)
--- a/src/syscall/zsyscall_linux_arm64.go
+++ b/src/syscall/zsyscall_linux_arm64.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1555,16 +1565,6 @@ func Gettimeofday(tv *Timeval) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func ppoll(fds *pollFd, nfds int, timeout *Timespec, sigmask *sigset_t) (n int, err error) {
        r0, _, e1 := Syscall6(SYS_PPOLL, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
        n = int(r0)

diff --git a/src/syscall/zsyscall_linux_mips.go b/src/syscall/zsyscall_linux_mips.go
index 617c2f54663309179f6182694c4102734bdbf887..966b2e1f2c2d3b0e37dff04a129bde0bfbf8f99b 100644 (file)
--- a/src/syscall/zsyscall_linux_mips.go
+++ b/src/syscall/zsyscall_linux_mips.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1646,28 +1656,6 @@ func EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe() (p1 int, p2 int, err error) {
-       r0, r1, e1 := RawSyscall(SYS_PIPE, 0, 0, 0)
-       p1 = int(r0)
-       p2 = int(r1)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) {
        r0, _, e1 := Syscall6(SYS_MMAP2, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(pageOffset))
        xaddr = uintptr(r0)

diff --git a/src/syscall/zsyscall_linux_mips64.go b/src/syscall/zsyscall_linux_mips64.go
index 793d4b98846a4e7691c946eb3af2ab7b6d93d5e1..c6812a051522e0590eafa1dbbc0854ebc90a9c31 100644 (file)
--- a/src/syscall/zsyscall_linux_mips64.go
+++ b/src/syscall/zsyscall_linux_mips64.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1642,16 +1652,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func fstat(fd int, st *stat_t) (err error) {
        _, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(unsafe.Pointer(st)), 0)
        if e1 != 0 {

diff --git a/src/syscall/zsyscall_linux_mips64le.go b/src/syscall/zsyscall_linux_mips64le.go
index 54e1760bda6d081a01cf174d439962273e1a14ce..eaaf7dfb41d7b49c210de763848d7bfefe7800a7 100644 (file)
--- a/src/syscall/zsyscall_linux_mips64le.go
+++ b/src/syscall/zsyscall_linux_mips64le.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1642,16 +1652,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func fstat(fd int, st *stat_t) (err error) {
        _, _, e1 := Syscall(SYS_FSTAT, uintptr(fd), uintptr(unsafe.Pointer(st)), 0)
        if e1 != 0 {

diff --git a/src/syscall/zsyscall_linux_mipsle.go b/src/syscall/zsyscall_linux_mipsle.go
index ba7e2118c04e5769079a61229255a798b2ac247f..bb159f1fe7bf1a1af0235c911ce447c79c7a1af0 100644 (file)
--- a/src/syscall/zsyscall_linux_mipsle.go
+++ b/src/syscall/zsyscall_linux_mipsle.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1646,28 +1656,6 @@ func EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe() (p1 int, p2 int, err error) {
-       r0, r1, e1 := RawSyscall(SYS_PIPE, 0, 0, 0)
-       p1 = int(r0)
-       p2 = int(r1)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error) {
        r0, _, e1 := Syscall6(SYS_MMAP2, uintptr(addr), uintptr(length), uintptr(prot), uintptr(flags), uintptr(fd), uintptr(pageOffset))
        xaddr = uintptr(r0)

diff --git a/src/syscall/zsyscall_linux_ppc64.go b/src/syscall/zsyscall_linux_ppc64.go
index c3437722e02f50c49e40ebdb05a9b4d486eedc11..8a4328560a50e8b8f037b88bb76a0cc8f7ed6f06 100644 (file)
--- a/src/syscall/zsyscall_linux_ppc64.go
+++ b/src/syscall/zsyscall_linux_ppc64.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1703,16 +1713,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func syncFileRange2(fd int, flags int, off int64, n int64) (err error) {
        _, _, e1 := Syscall6(SYS_SYNC_FILE_RANGE2, uintptr(fd), uintptr(flags), uintptr(off), uintptr(n), 0, 0)
        if e1 != 0 {

diff --git a/src/syscall/zsyscall_linux_ppc64le.go b/src/syscall/zsyscall_linux_ppc64le.go
index acc34a76d2b6315a3f864773c5131191445531b2..274b55ce6b9947fc51b8a577ac1df4501e3f85ce 100644 (file)
--- a/src/syscall/zsyscall_linux_ppc64le.go
+++ b/src/syscall/zsyscall_linux_ppc64le.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1703,16 +1713,6 @@ func utimes(path string, times *[2]Timeval) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func syncFileRange2(fd int, flags int, off int64, n int64) (err error) {
        _, _, e1 := Syscall6(SYS_SYNC_FILE_RANGE2, uintptr(fd), uintptr(flags), uintptr(off), uintptr(n), 0, 0)
        if e1 != 0 {

diff --git a/src/syscall/zsyscall_linux_riscv64.go b/src/syscall/zsyscall_linux_riscv64.go
index d662d780db9d8fd8c3eda1de74b5816c0e548922..e21dc46f32c50e05588726a74f728fbc7fdd7ce4 100644 (file)
--- a/src/syscall/zsyscall_linux_riscv64.go
+++ b/src/syscall/zsyscall_linux_riscv64.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1555,16 +1565,6 @@ func Gettimeofday(tv *Timeval) (err error) {
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
 func ppoll(fds *pollFd, nfds int, timeout *Timespec, sigmask *sigset_t) (n int, err error) {
        r0, _, e1 := Syscall6(SYS_PPOLL, uintptr(unsafe.Pointer(fds)), uintptr(nfds), uintptr(unsafe.Pointer(timeout)), uintptr(unsafe.Pointer(sigmask)), 0, 0)
        n = int(r0)

diff --git a/src/syscall/zsyscall_linux_s390x.go b/src/syscall/zsyscall_linux_s390x.go
index 20f8c61366ca1eef8721a36a00c523a5351b9fc8..fc667e7c3fa906430565355c4ef8ddddb3fb2ad7 100644 (file)
--- a/src/syscall/zsyscall_linux_s390x.go
+++ b/src/syscall/zsyscall_linux_s390x.go
@@ -76,6 +76,16 @@ func openat(dirfd int, path string, flags int, mode uint32) (fd int, err error)
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func pipe2(p *[2]_C_int, flags int) (err error) {
+       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
+       if e1 != 0 {
+               err = errnoErr(e1)
+       }
+       return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func readlinkat(dirfd int, path string, buf []byte) (n int, err error) {
        var _p0 *byte
        _p0, err = BytePtrFromString(path)
@@ -1490,13 +1500,3 @@ func utimes(path string, times *[2]Timeval) (err error) {
        }
        return
 }
-
-// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
-
-func pipe2(p *[2]_C_int, flags int) (err error) {
-       _, _, e1 := RawSyscall(SYS_PIPE2, uintptr(unsafe.Pointer(p)), uintptr(flags), 0)
-       if e1 != 0 {
-               err = errnoErr(e1)
-       }
-       return
-}