diff options
Diffstat (limited to 'vendor/golang.org/x/sys/unix/syscall_linux.go')
| -rw-r--r-- | vendor/golang.org/x/sys/unix/syscall_linux.go | 205 |
1 files changed, 189 insertions, 16 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go index 9737e08..4520328 100644 --- a/vendor/golang.org/x/sys/unix/syscall_linux.go +++ b/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -36,6 +36,59 @@ func Creat(path string, mode uint32) (fd int, err error) { return Open(path, O_CREAT|O_WRONLY|O_TRUNC, mode) } +//sys fchmodat(dirfd int, path string, mode uint32) (err error) + +func Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) { + // Linux fchmodat doesn't support the flags parameter. Mimick glibc's behavior + // and check the flags. Otherwise the mode would be applied to the symlink + // destination which is not what the user expects. + if flags&^AT_SYMLINK_NOFOLLOW != 0 { + return EINVAL + } else if flags&AT_SYMLINK_NOFOLLOW != 0 { + return EOPNOTSUPP + } + return fchmodat(dirfd, path, mode) +} + +//sys ioctl(fd int, req uint, arg uintptr) (err error) + +// ioctl itself should not be exposed directly, but additional get/set +// functions for specific types are permissible. + +// IoctlSetInt performs an ioctl operation which sets an integer value +// on fd, using the specified request number. +func IoctlSetInt(fd int, req uint, value int) error { + return ioctl(fd, req, uintptr(value)) +} + +func IoctlSetWinsize(fd int, req uint, value *Winsize) error { + return ioctl(fd, req, uintptr(unsafe.Pointer(value))) +} + +func IoctlSetTermios(fd int, req uint, value *Termios) error { + return ioctl(fd, req, uintptr(unsafe.Pointer(value))) +} + +// IoctlGetInt performs an ioctl operation which gets an integer value +// from fd, using the specified request number. +func IoctlGetInt(fd int, req uint) (int, error) { + var value int + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return value, err +} + +func IoctlGetWinsize(fd int, req uint) (*Winsize, error) { + var value Winsize + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return &value, err +} + +func IoctlGetTermios(fd int, req uint) (*Termios, error) { + var value Termios + err := ioctl(fd, req, uintptr(unsafe.Pointer(&value))) + return &value, err +} + //sys Linkat(olddirfd int, oldpath string, newdirfd int, newpath string, flags int) (err error) func Link(oldpath string, newpath string) (err error) { @@ -299,10 +352,14 @@ func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, return } -func Mkfifo(path string, mode uint32) (err error) { +func Mkfifo(path string, mode uint32) error { return Mknod(path, mode|S_IFIFO, 0) } +func Mkfifoat(dirfd int, path string, mode uint32) error { + return Mknodat(dirfd, path, mode|S_IFIFO, 0) +} + func (sa *SockaddrInet4) sockaddr() (unsafe.Pointer, _Socklen, error) { if sa.Port < 0 || sa.Port > 0xFFFF { return nil, 0, EINVAL @@ -755,6 +812,113 @@ func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) { return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq)) } +// Keyctl Commands (http://man7.org/linux/man-pages/man2/keyctl.2.html) + +// KeyctlInt calls keyctl commands in which each argument is an int. +// These commands are KEYCTL_REVOKE, KEYCTL_CHOWN, KEYCTL_CLEAR, KEYCTL_LINK, +// KEYCTL_UNLINK, KEYCTL_NEGATE, KEYCTL_SET_REQKEY_KEYRING, KEYCTL_SET_TIMEOUT, +// KEYCTL_ASSUME_AUTHORITY, KEYCTL_SESSION_TO_PARENT, KEYCTL_REJECT, +// KEYCTL_INVALIDATE, and KEYCTL_GET_PERSISTENT. +//sys KeyctlInt(cmd int, arg2 int, arg3 int, arg4 int, arg5 int) (ret int, err error) = SYS_KEYCTL + +// KeyctlBuffer calls keyctl commands in which the third and fourth +// arguments are a buffer and its length, respectively. +// These commands are KEYCTL_UPDATE, KEYCTL_READ, and KEYCTL_INSTANTIATE. +//sys KeyctlBuffer(cmd int, arg2 int, buf []byte, arg5 int) (ret int, err error) = SYS_KEYCTL + +// KeyctlString calls keyctl commands which return a string. +// These commands are KEYCTL_DESCRIBE and KEYCTL_GET_SECURITY. +func KeyctlString(cmd int, id int) (string, error) { + // We must loop as the string data may change in between the syscalls. + // We could allocate a large buffer here to reduce the chance that the + // syscall needs to be called twice; however, this is unnecessary as + // the performance loss is negligible. + var buffer []byte + for { + // Try to fill the buffer with data + length, err := KeyctlBuffer(cmd, id, buffer, 0) + if err != nil { + return "", err + } + + // Check if the data was written + if length <= len(buffer) { + // Exclude the null terminator + return string(buffer[:length-1]), nil + } + + // Make a bigger buffer if needed + buffer = make([]byte, length) + } +} + +// Keyctl commands with special signatures. + +// KeyctlGetKeyringID implements the KEYCTL_GET_KEYRING_ID command. +// See the full documentation at: +// http://man7.org/linux/man-pages/man3/keyctl_get_keyring_ID.3.html +func KeyctlGetKeyringID(id int, create bool) (ringid int, err error) { + createInt := 0 + if create { + createInt = 1 + } + return KeyctlInt(KEYCTL_GET_KEYRING_ID, id, createInt, 0, 0) +} + +// KeyctlSetperm implements the KEYCTL_SETPERM command. The perm value is the +// key handle permission mask as described in the "keyctl setperm" section of +// http://man7.org/linux/man-pages/man1/keyctl.1.html. +// See the full documentation at: +// http://man7.org/linux/man-pages/man3/keyctl_setperm.3.html +func KeyctlSetperm(id int, perm uint32) error { + _, err := KeyctlInt(KEYCTL_SETPERM, id, int(perm), 0, 0) + return err +} + +//sys keyctlJoin(cmd int, arg2 string) (ret int, err error) = SYS_KEYCTL + +// KeyctlJoinSessionKeyring implements the KEYCTL_JOIN_SESSION_KEYRING command. +// See the full documentation at: +// http://man7.org/linux/man-pages/man3/keyctl_join_session_keyring.3.html +func KeyctlJoinSessionKeyring(name string) (ringid int, err error) { + return keyctlJoin(KEYCTL_JOIN_SESSION_KEYRING, name) +} + +//sys keyctlSearch(cmd int, arg2 int, arg3 string, arg4 string, arg5 int) (ret int, err error) = SYS_KEYCTL + +// KeyctlSearch implements the KEYCTL_SEARCH command. +// See the full documentation at: +// http://man7.org/linux/man-pages/man3/keyctl_search.3.html +func KeyctlSearch(ringid int, keyType, description string, destRingid int) (id int, err error) { + return keyctlSearch(KEYCTL_SEARCH, ringid, keyType, description, destRingid) +} + +//sys keyctlIOV(cmd int, arg2 int, payload []Iovec, arg5 int) (err error) = SYS_KEYCTL + +// KeyctlInstantiateIOV implements the KEYCTL_INSTANTIATE_IOV command. This +// command is similar to KEYCTL_INSTANTIATE, except that the payload is a slice +// of Iovec (each of which represents a buffer) instead of a single buffer. +// See the full documentation at: +// http://man7.org/linux/man-pages/man3/keyctl_instantiate_iov.3.html +func KeyctlInstantiateIOV(id int, payload []Iovec, ringid int) error { + return keyctlIOV(KEYCTL_INSTANTIATE_IOV, id, payload, ringid) +} + +//sys keyctlDH(cmd int, arg2 *KeyctlDHParams, buf []byte) (ret int, err error) = SYS_KEYCTL + +// KeyctlDHCompute implements the KEYCTL_DH_COMPUTE command. This command +// computes a Diffie-Hellman shared secret based on the provide params. The +// secret is written to the provided buffer and the returned size is the number +// of bytes written (returning an error if there is insufficient space in the +// buffer). If a nil buffer is passed in, this function returns the minimum +// buffer length needed to store the appropriate data. Note that this differs +// from KEYCTL_READ's behavior which always returns the requested payload size. +// See the full documentation at: +// http://man7.org/linux/man-pages/man3/keyctl_dh_compute.3.html +func KeyctlDHCompute(params *KeyctlDHParams, buffer []byte) (size int, err error) { + return keyctlDH(KEYCTL_DH_COMPUTE, params, buffer) +} + func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from Sockaddr, err error) { var msg Msghdr var rsa RawSockaddrAny @@ -767,8 +931,13 @@ func Recvmsg(fd int, p, oob []byte, flags int) (n, oobn int, recvflags int, from } var dummy byte if len(oob) > 0 { + var sockType int + sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE) + if err != nil { + return + } // receive at least one normal byte - if len(p) == 0 { + if sockType != SOCK_DGRAM && len(p) == 0 { iov.Base = &dummy iov.SetLen(1) } @@ -814,8 +983,13 @@ func SendmsgN(fd int, p, oob []byte, to Sockaddr, flags int) (n int, err error) } var dummy byte if len(oob) > 0 { + var sockType int + sockType, err = GetsockoptInt(fd, SOL_SOCKET, SO_TYPE) + if err != nil { + return 0, err + } // send at least one normal byte - if len(p) == 0 { + if sockType != SOCK_DGRAM && len(p) == 0 { iov.Base = &dummy iov.SetLen(1) } @@ -1033,22 +1207,24 @@ func Mount(source string, target string, fstype string, flags uintptr, data stri * Direct access */ //sys Acct(path string) (err error) +//sys AddKey(keyType string, description string, payload []byte, ringid int) (id int, err error) //sys Adjtimex(buf *Timex) (state int, err error) //sys Chdir(path string) (err error) //sys Chroot(path string) (err error) //sys ClockGettime(clockid int32, time *Timespec) (err error) //sys Close(fd int) (err error) +//sys CopyFileRange(rfd int, roff *int64, wfd int, woff *int64, len int, flags int) (n int, err error) //sys Dup(oldfd int) (fd int, err error) //sys Dup3(oldfd int, newfd int, flags int) (err error) //sysnb EpollCreate(size int) (fd int, err error) //sysnb EpollCreate1(flag int) (fd int, err error) //sysnb EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error) +//sys Eventfd(initval uint, flags int) (fd int, err error) = SYS_EVENTFD2 //sys Exit(code int) = SYS_EXIT_GROUP //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error) //sys Fallocate(fd int, mode uint32, off int64, len int64) (err error) //sys Fchdir(fd int) (err error) //sys Fchmod(fd int, mode uint32) (err error) -//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error) //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error) //sys fcntl(fd int, cmd int, arg int) (val int, err error) //sys Fdatasync(fd int) (err error) @@ -1075,16 +1251,22 @@ func Getpgrp() (pid int) { //sysnb InotifyRmWatch(fd int, watchdesc uint32) (success int, err error) //sysnb Kill(pid int, sig syscall.Signal) (err error) //sys Klogctl(typ int, buf []byte) (n int, err error) = SYS_SYSLOG +//sys Lgetxattr(path string, attr string, dest []byte) (sz int, err error) //sys Listxattr(path string, dest []byte) (sz int, err error) +//sys Llistxattr(path string, dest []byte) (sz int, err error) +//sys Lremovexattr(path string, attr string) (err error) +//sys Lsetxattr(path string, attr string, data []byte, flags int) (err error) //sys Mkdirat(dirfd int, path string, mode uint32) (err error) //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error) //sys Nanosleep(time *Timespec, leftover *Timespec) (err error) //sys PivotRoot(newroot string, putold string) (err error) = SYS_PIVOT_ROOT //sysnb prlimit(pid int, resource int, newlimit *Rlimit, old *Rlimit) (err error) = SYS_PRLIMIT64 //sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error) +//sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) = SYS_PSELECT6 //sys read(fd int, p []byte) (n int, err error) //sys Removexattr(path string, attr string) (err error) //sys Renameat(olddirfd int, oldpath string, newdirfd int, newpath string) (err error) +//sys RequestKey(keyType string, description string, callback string, destRingid int) (id int, err error) //sys Setdomainname(p []byte) (err error) //sys Sethostname(p []byte) (err error) //sysnb Setpgid(pid int, pgid int) (err error) @@ -1108,6 +1290,7 @@ func Setgid(uid int) (err error) { //sys Setpriority(which int, who int, prio int) (err error) //sys Setxattr(path string, attr string, data []byte, flags int) (err error) //sys Sync() +//sys Syncfs(fd int) (err error) //sysnb Sysinfo(info *Sysinfo_t) (err error) //sys Tee(rfd int, wfd int, len int, flags int) (n int64, err error) //sysnb Tgkill(tgid int, tid int, sig syscall.Signal) (err error) @@ -1142,8 +1325,9 @@ func Munmap(b []byte) (err error) { //sys Madvise(b []byte, advice int) (err error) //sys Mprotect(b []byte, prot int) (err error) //sys Mlock(b []byte) (err error) -//sys Munlock(b []byte) (err error) //sys Mlockall(flags int) (err error) +//sys Msync(b []byte, flags int) (err error) +//sys Munlock(b []byte) (err error) //sys Munlockall() (err error) // Vmsplice splices user pages from a slice of Iovecs into a pipe specified by fd, @@ -1168,7 +1352,6 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { /* * Unimplemented */ -// AddKey // AfsSyscall // Alarm // ArchPrctl @@ -1184,7 +1367,6 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { // EpollCtlOld // EpollPwait // EpollWaitOld -// Eventfd // Execve // Fgetxattr // Flistxattr @@ -1203,23 +1385,16 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { // IoGetevents // IoSetup // IoSubmit -// Ioctl // IoprioGet // IoprioSet // KexecLoad -// Keyctl -// Lgetxattr -// Llistxattr // LookupDcookie -// Lremovexattr -// Lsetxattr // Mbind // MigratePages // Mincore // ModifyLdt // Mount // MovePages -// Mprotect // MqGetsetattr // MqNotify // MqOpen @@ -1231,7 +1406,6 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { // Msgget // Msgrcv // Msgsnd -// Msync // Newfstatat // Nfsservctl // Personality @@ -1243,7 +1417,6 @@ func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) { // Readahead // Readv // RemapFilePages -// RequestKey // RestartSyscall // RtSigaction // RtSigpending |