From c281ee3b61e8ab53ff118866d72618ae8cce582b Mon Sep 17 00:00:00 2001 From: Christopher Speller Date: Mon, 13 Mar 2017 12:54:22 -0400 Subject: Updating server dependancies. Also adding github.com/jaytaylor/html2text and gopkg.in/gomail.v2 (#5748) --- vendor/golang.org/x/sys/unix/syscall_linux.go | 150 +++++++++++++++++++++++++- 1 file changed, 149 insertions(+), 1 deletion(-) (limited to 'vendor/golang.org/x/sys/unix/syscall_linux.go') diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go index 01c569ad5..1ff45e9f6 100644 --- a/vendor/golang.org/x/sys/unix/syscall_linux.go +++ b/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -452,6 +452,127 @@ func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) { return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil } +// SockaddrALG implements the Sockaddr interface for AF_ALG type sockets. +// SockaddrALG enables userspace access to the Linux kernel's cryptography +// subsystem. The Type and Name fields specify which type of hash or cipher +// should be used with a given socket. +// +// To create a file descriptor that provides access to a hash or cipher, both +// Bind and Accept must be used. Once the setup process is complete, input +// data can be written to the socket, processed by the kernel, and then read +// back as hash output or ciphertext. +// +// Here is an example of using an AF_ALG socket with SHA1 hashing. +// The initial socket setup process is as follows: +// +// // Open a socket to perform SHA1 hashing. +// fd, _ := unix.Socket(unix.AF_ALG, unix.SOCK_SEQPACKET, 0) +// addr := &unix.SockaddrALG{Type: "hash", Name: "sha1"} +// unix.Bind(fd, addr) +// // Note: unix.Accept does not work at this time; must invoke accept() +// // manually using unix.Syscall. +// hashfd, _, _ := unix.Syscall(unix.SYS_ACCEPT, uintptr(fd), 0, 0) +// +// Once a file descriptor has been returned from Accept, it may be used to +// perform SHA1 hashing. The descriptor is not safe for concurrent use, but +// may be re-used repeatedly with subsequent Write and Read operations. +// +// When hashing a small byte slice or string, a single Write and Read may +// be used: +// +// // Assume hashfd is already configured using the setup process. +// hash := os.NewFile(hashfd, "sha1") +// // Hash an input string and read the results. Each Write discards +// // previous hash state. Read always reads the current state. +// b := make([]byte, 20) +// for i := 0; i < 2; i++ { +// io.WriteString(hash, "Hello, world.") +// hash.Read(b) +// fmt.Println(hex.EncodeToString(b)) +// } +// // Output: +// // 2ae01472317d1935a84797ec1983ae243fc6aa28 +// // 2ae01472317d1935a84797ec1983ae243fc6aa28 +// +// For hashing larger byte slices, or byte streams such as those read from +// a file or socket, use Sendto with MSG_MORE to instruct the kernel to update +// the hash digest instead of creating a new one for a given chunk and finalizing it. +// +// // Assume hashfd and addr are already configured using the setup process. +// hash := os.NewFile(hashfd, "sha1") +// // Hash the contents of a file. +// f, _ := os.Open("/tmp/linux-4.10-rc7.tar.xz") +// b := make([]byte, 4096) +// for { +// n, err := f.Read(b) +// if err == io.EOF { +// break +// } +// unix.Sendto(hashfd, b[:n], unix.MSG_MORE, addr) +// } +// hash.Read(b) +// fmt.Println(hex.EncodeToString(b)) +// // Output: 85cdcad0c06eef66f805ecce353bec9accbeecc5 +// +// For more information, see: http://www.chronox.de/crypto-API/crypto/userspace-if.html. +type SockaddrALG struct { + Type string + Name string + Feature uint32 + Mask uint32 + raw RawSockaddrALG +} + +func (sa *SockaddrALG) sockaddr() (unsafe.Pointer, _Socklen, error) { + // Leave room for NUL byte terminator. + if len(sa.Type) > 13 { + return nil, 0, EINVAL + } + if len(sa.Name) > 63 { + return nil, 0, EINVAL + } + + sa.raw.Family = AF_ALG + sa.raw.Feat = sa.Feature + sa.raw.Mask = sa.Mask + + typ, err := ByteSliceFromString(sa.Type) + if err != nil { + return nil, 0, err + } + name, err := ByteSliceFromString(sa.Name) + if err != nil { + return nil, 0, err + } + + copy(sa.raw.Type[:], typ) + copy(sa.raw.Name[:], name) + + return unsafe.Pointer(&sa.raw), SizeofSockaddrALG, nil +} + +// SockaddrVM implements the Sockaddr interface for AF_VSOCK type sockets. +// SockaddrVM provides access to Linux VM sockets: a mechanism that enables +// bidirectional communication between a hypervisor and its guest virtual +// machines. +type SockaddrVM struct { + // CID and Port specify a context ID and port address for a VM socket. + // Guests have a unique CID, and hosts may have a well-known CID of: + // - VMADDR_CID_HYPERVISOR: refers to the hypervisor process. + // - VMADDR_CID_HOST: refers to other processes on the host. + CID uint32 + Port uint32 + raw RawSockaddrVM +} + +func (sa *SockaddrVM) sockaddr() (unsafe.Pointer, _Socklen, error) { + sa.raw.Family = AF_VSOCK + sa.raw.Port = sa.Port + sa.raw.Cid = sa.CID + + return unsafe.Pointer(&sa.raw), SizeofSockaddrVM, nil +} + func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) { switch rsa.Addr.Family { case AF_NETLINK: @@ -521,6 +642,14 @@ func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) { sa.Addr[i] = pp.Addr[i] } return sa, nil + + case AF_VSOCK: + pp := (*RawSockaddrVM)(unsafe.Pointer(rsa)) + sa := &SockaddrVM{ + CID: pp.Cid, + Port: pp.Port, + } + return sa, nil } return nil, EAFNOSUPPORT } @@ -939,6 +1068,7 @@ func Getpgrp() (pid int) { //sysnb Getpid() (pid int) //sysnb Getppid() (ppid int) //sys Getpriority(which int, who int) (prio int, err error) +//sys Getrandom(buf []byte, flags int) (n int, err error) //sysnb Getrusage(who int, rusage *Rusage) (err error) //sysnb Getsid(pid int) (sid int, err error) //sysnb Gettid() (tid int) @@ -1019,6 +1149,25 @@ func Munmap(b []byte) (err error) { //sys Mlockall(flags int) (err error) //sys Munlockall() (err error) +// Vmsplice splices user pages from a slice of Iovecs into a pipe specified by fd, +// using the specified flags. +func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { + n, _, errno := Syscall6( + SYS_VMSPLICE, + uintptr(fd), + uintptr(unsafe.Pointer(&iovs[0])), + uintptr(len(iovs)), + uintptr(flags), + 0, + 0, + ) + if errno != 0 { + return 0, syscall.Errno(errno) + } + + return int(n), nil +} + /* * Unimplemented */ @@ -1146,7 +1295,6 @@ func Munmap(b []byte) (err error) { // Utimensat // Vfork // Vhangup -// Vmsplice // Vserver // Waitid // _Sysctl -- cgit v1.2.3-1-g7c22