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 | 237 |
1 files changed, 200 insertions, 37 deletions
diff --git a/vendor/golang.org/x/sys/unix/syscall_linux.go b/vendor/golang.org/x/sys/unix/syscall_linux.go index fb4e502..4958a65 100644 --- a/vendor/golang.org/x/sys/unix/syscall_linux.go +++ b/vendor/golang.org/x/sys/unix/syscall_linux.go @@ -13,6 +13,7 @@ package unix import ( "encoding/binary" + "slices" "strconv" "syscall" "time" @@ -61,15 +62,23 @@ func FanotifyMark(fd int, flags uint, mask uint64, dirFd int, pathname string) ( } //sys fchmodat(dirfd int, path string, mode uint32) (err error) +//sys fchmodat2(dirfd int, path string, mode uint32, flags int) (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 +func Fchmodat(dirfd int, path string, mode uint32, flags int) error { + // Linux fchmodat doesn't support the flags parameter, but fchmodat2 does. + // Try fchmodat2 if flags are specified. + if flags != 0 { + err := fchmodat2(dirfd, path, mode, flags) + if err == ENOSYS { + // fchmodat2 isn't available. If the flags are known to be valid, + // return EOPNOTSUPP to indicate that fchmodat doesn't support them. + if flags&^(AT_SYMLINK_NOFOLLOW|AT_EMPTY_PATH) != 0 { + return EINVAL + } else if flags&(AT_SYMLINK_NOFOLLOW|AT_EMPTY_PATH) != 0 { + return EOPNOTSUPP + } + } + return err } return fchmodat(dirfd, path, mode) } @@ -409,7 +418,7 @@ func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { return nil, 0, EINVAL } sa.raw.Family = AF_UNIX - for i := 0; i < n; i++ { + for i := range n { sa.raw.Path[i] = int8(name[i]) } // length is family (uint16), name, NUL. @@ -417,7 +426,8 @@ func (sa *SockaddrUnix) sockaddr() (unsafe.Pointer, _Socklen, error) { if n > 0 { sl += _Socklen(n) + 1 } - if sa.raw.Path[0] == '@' { + if sa.raw.Path[0] == '@' || (sa.raw.Path[0] == 0 && sl > 3) { + // Check sl > 3 so we don't change unnamed socket behavior. sa.raw.Path[0] = 0 // Don't count trailing NUL for abstract address. sl-- @@ -498,7 +508,7 @@ func (sa *SockaddrL2) sockaddr() (unsafe.Pointer, _Socklen, error) { psm := (*[2]byte)(unsafe.Pointer(&sa.raw.Psm)) psm[0] = byte(sa.PSM) psm[1] = byte(sa.PSM >> 8) - for i := 0; i < len(sa.Addr); i++ { + for i := range len(sa.Addr) { sa.raw.Bdaddr[i] = sa.Addr[len(sa.Addr)-1-i] } cid := (*[2]byte)(unsafe.Pointer(&sa.raw.Cid)) @@ -580,11 +590,11 @@ func (sa *SockaddrCAN) sockaddr() (unsafe.Pointer, _Socklen, error) { sa.raw.Family = AF_CAN sa.raw.Ifindex = int32(sa.Ifindex) rx := (*[4]byte)(unsafe.Pointer(&sa.RxID)) - for i := 0; i < 4; i++ { + for i := range 4 { sa.raw.Addr[i] = rx[i] } tx := (*[4]byte)(unsafe.Pointer(&sa.TxID)) - for i := 0; i < 4; i++ { + for i := range 4 { sa.raw.Addr[i+4] = tx[i] } return unsafe.Pointer(&sa.raw), SizeofSockaddrCAN, nil @@ -609,11 +619,11 @@ func (sa *SockaddrCANJ1939) sockaddr() (unsafe.Pointer, _Socklen, error) { sa.raw.Family = AF_CAN sa.raw.Ifindex = int32(sa.Ifindex) n := (*[8]byte)(unsafe.Pointer(&sa.Name)) - for i := 0; i < 8; i++ { + for i := range 8 { sa.raw.Addr[i] = n[i] } p := (*[4]byte)(unsafe.Pointer(&sa.PGN)) - for i := 0; i < 4; i++ { + for i := range 4 { sa.raw.Addr[i+8] = p[i] } sa.raw.Addr[12] = sa.Addr @@ -902,7 +912,7 @@ func (sa *SockaddrIUCV) sockaddr() (unsafe.Pointer, _Socklen, error) { // These are EBCDIC encoded by the kernel, but we still need to pad them // with blanks. Initializing with blanks allows the caller to feed in either // a padded or an unpadded string. - for i := 0; i < 8; i++ { + for i := range 8 { sa.raw.Nodeid[i] = ' ' sa.raw.User_id[i] = ' ' sa.raw.Name[i] = ' ' @@ -1139,7 +1149,7 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { var user [8]byte var name [8]byte - for i := 0; i < 8; i++ { + for i := range 8 { user[i] = byte(pp.User_id[i]) name[i] = byte(pp.Name[i]) } @@ -1164,11 +1174,11 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { Ifindex: int(pp.Ifindex), } name := (*[8]byte)(unsafe.Pointer(&sa.Name)) - for i := 0; i < 8; i++ { + for i := range 8 { name[i] = pp.Addr[i] } pgn := (*[4]byte)(unsafe.Pointer(&sa.PGN)) - for i := 0; i < 4; i++ { + for i := range 4 { pgn[i] = pp.Addr[i+8] } addr := (*[1]byte)(unsafe.Pointer(&sa.Addr)) @@ -1179,11 +1189,11 @@ func anyToSockaddr(fd int, rsa *RawSockaddrAny) (Sockaddr, error) { Ifindex: int(pp.Ifindex), } rx := (*[4]byte)(unsafe.Pointer(&sa.RxID)) - for i := 0; i < 4; i++ { + for i := range 4 { rx[i] = pp.Addr[i] } tx := (*[4]byte)(unsafe.Pointer(&sa.TxID)) - for i := 0; i < 4; i++ { + for i := range 4 { tx[i] = pp.Addr[i+4] } return sa, nil @@ -1286,6 +1296,48 @@ func GetsockoptTCPInfo(fd, level, opt int) (*TCPInfo, error) { return &value, err } +// GetsockoptTCPCCVegasInfo returns algorithm specific congestion control information for a socket using the "vegas" +// algorithm. +// +// The socket's congestion control algorighm can be retrieved via [GetsockoptString] with the [TCP_CONGESTION] option: +// +// algo, err := unix.GetsockoptString(fd, unix.IPPROTO_TCP, unix.TCP_CONGESTION) +func GetsockoptTCPCCVegasInfo(fd, level, opt int) (*TCPVegasInfo, error) { + var value [SizeofTCPCCInfo / 4]uint32 // ensure proper alignment + vallen := _Socklen(SizeofTCPCCInfo) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) + out := (*TCPVegasInfo)(unsafe.Pointer(&value[0])) + return out, err +} + +// GetsockoptTCPCCDCTCPInfo returns algorithm specific congestion control information for a socket using the "dctp" +// algorithm. +// +// The socket's congestion control algorighm can be retrieved via [GetsockoptString] with the [TCP_CONGESTION] option: +// +// algo, err := unix.GetsockoptString(fd, unix.IPPROTO_TCP, unix.TCP_CONGESTION) +func GetsockoptTCPCCDCTCPInfo(fd, level, opt int) (*TCPDCTCPInfo, error) { + var value [SizeofTCPCCInfo / 4]uint32 // ensure proper alignment + vallen := _Socklen(SizeofTCPCCInfo) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) + out := (*TCPDCTCPInfo)(unsafe.Pointer(&value[0])) + return out, err +} + +// GetsockoptTCPCCBBRInfo returns algorithm specific congestion control information for a socket using the "bbr" +// algorithm. +// +// The socket's congestion control algorighm can be retrieved via [GetsockoptString] with the [TCP_CONGESTION] option: +// +// algo, err := unix.GetsockoptString(fd, unix.IPPROTO_TCP, unix.TCP_CONGESTION) +func GetsockoptTCPCCBBRInfo(fd, level, opt int) (*TCPBBRInfo, error) { + var value [SizeofTCPCCInfo / 4]uint32 // ensure proper alignment + vallen := _Socklen(SizeofTCPCCInfo) + err := getsockopt(fd, level, opt, unsafe.Pointer(&value[0]), &vallen) + out := (*TCPBBRInfo)(unsafe.Pointer(&value[0])) + return out, err +} + // GetsockoptString returns the string value of the socket option opt for the // socket associated with fd at the given socket level. func GetsockoptString(fd, level, opt int) (string, error) { @@ -1301,7 +1353,7 @@ func GetsockoptString(fd, level, opt int) (string, error) { return "", err } } - return string(buf[:vallen-1]), nil + return ByteSliceToString(buf[:vallen]), nil } func GetsockoptTpacketStats(fd, level, opt int) (*TpacketStats, error) { @@ -1809,6 +1861,7 @@ func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err e //sys ClockAdjtime(clockid int32, buf *Timex) (state int, err error) //sys ClockGetres(clockid int32, res *Timespec) (err error) //sys ClockGettime(clockid int32, time *Timespec) (err error) +//sys ClockSettime(clockid int32, time *Timespec) (err error) //sys ClockNanosleep(clockid int32, flags int, request *Timespec, remain *Timespec) (err error) //sys Close(fd int) (err error) //sys CloseRange(first uint, last uint, flags uint) (err error) @@ -1840,6 +1893,105 @@ func Dup2(oldfd, newfd int) error { //sys Fsmount(fd int, flags int, mountAttrs int) (fsfd int, err error) //sys Fsopen(fsName string, flags int) (fd int, err error) //sys Fspick(dirfd int, pathName string, flags int) (fd int, err error) + +//sys fsconfig(fd int, cmd uint, key *byte, value *byte, aux int) (err error) + +func fsconfigCommon(fd int, cmd uint, key string, value *byte, aux int) (err error) { + var keyp *byte + if keyp, err = BytePtrFromString(key); err != nil { + return + } + return fsconfig(fd, cmd, keyp, value, aux) +} + +// FsconfigSetFlag is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_SET_FLAG. +// +// fd is the filesystem context to act upon. +// key the parameter key to set. +func FsconfigSetFlag(fd int, key string) (err error) { + return fsconfigCommon(fd, FSCONFIG_SET_FLAG, key, nil, 0) +} + +// FsconfigSetString is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_SET_STRING. +// +// fd is the filesystem context to act upon. +// key the parameter key to set. +// value is the parameter value to set. +func FsconfigSetString(fd int, key string, value string) (err error) { + var valuep *byte + if valuep, err = BytePtrFromString(value); err != nil { + return + } + return fsconfigCommon(fd, FSCONFIG_SET_STRING, key, valuep, 0) +} + +// FsconfigSetBinary is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_SET_BINARY. +// +// fd is the filesystem context to act upon. +// key the parameter key to set. +// value is the parameter value to set. +func FsconfigSetBinary(fd int, key string, value []byte) (err error) { + if len(value) == 0 { + return EINVAL + } + return fsconfigCommon(fd, FSCONFIG_SET_BINARY, key, &value[0], len(value)) +} + +// FsconfigSetPath is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_SET_PATH. +// +// fd is the filesystem context to act upon. +// key the parameter key to set. +// path is a non-empty path for specified key. +// atfd is a file descriptor at which to start lookup from or AT_FDCWD. +func FsconfigSetPath(fd int, key string, path string, atfd int) (err error) { + var valuep *byte + if valuep, err = BytePtrFromString(path); err != nil { + return + } + return fsconfigCommon(fd, FSCONFIG_SET_PATH, key, valuep, atfd) +} + +// FsconfigSetPathEmpty is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_SET_PATH_EMPTY. The same as +// FconfigSetPath but with AT_PATH_EMPTY implied. +func FsconfigSetPathEmpty(fd int, key string, path string, atfd int) (err error) { + var valuep *byte + if valuep, err = BytePtrFromString(path); err != nil { + return + } + return fsconfigCommon(fd, FSCONFIG_SET_PATH_EMPTY, key, valuep, atfd) +} + +// FsconfigSetFd is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_SET_FD. +// +// fd is the filesystem context to act upon. +// key the parameter key to set. +// value is a file descriptor to be assigned to specified key. +func FsconfigSetFd(fd int, key string, value int) (err error) { + return fsconfigCommon(fd, FSCONFIG_SET_FD, key, nil, value) +} + +// FsconfigCreate is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_CMD_CREATE. +// +// fd is the filesystem context to act upon. +func FsconfigCreate(fd int) (err error) { + return fsconfig(fd, FSCONFIG_CMD_CREATE, nil, nil, 0) +} + +// FsconfigReconfigure is equivalent to fsconfig(2) called +// with cmd == FSCONFIG_CMD_RECONFIGURE. +// +// fd is the filesystem context to act upon. +func FsconfigReconfigure(fd int) (err error) { + return fsconfig(fd, FSCONFIG_CMD_RECONFIGURE, nil, nil, 0) +} + //sys Getdents(fd int, buf []byte) (n int, err error) = SYS_GETDENTS64 //sysnb Getpgid(pid int) (pgid int, err error) @@ -1851,7 +2003,26 @@ 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) + +func Getrandom(buf []byte, flags int) (n int, err error) { + vdsoRet, supported := vgetrandom(buf, uint32(flags)) + if supported { + if vdsoRet < 0 { + return 0, errnoErr(syscall.Errno(-vdsoRet)) + } + return vdsoRet, nil + } + var p *byte + if len(buf) > 0 { + p = &buf[0] + } + r, _, e := Syscall(SYS_GETRANDOM, uintptr(unsafe.Pointer(p)), uintptr(len(buf)), uintptr(flags)) + if e != 0 { + return 0, errnoErr(e) + } + return int(r), nil +} + //sysnb Getrusage(who int, rusage *Rusage) (err error) //sysnb Getsid(pid int) (sid int, err error) //sysnb Gettid() (tid int) @@ -2046,10 +2217,7 @@ func readvRacedetect(iovecs []Iovec, n int, err error) { return } for i := 0; n > 0 && i < len(iovecs); i++ { - m := int(iovecs[i].Len) - if m > n { - m = n - } + m := min(int(iovecs[i].Len), n) n -= m if m > 0 { raceWriteRange(unsafe.Pointer(iovecs[i].Base), m) @@ -2100,10 +2268,7 @@ func writevRacedetect(iovecs []Iovec, n int) { return } for i := 0; n > 0 && i < len(iovecs); i++ { - m := int(iovecs[i].Len) - if m > n { - m = n - } + m := min(int(iovecs[i].Len), n) n -= m if m > 0 { raceReadRange(unsafe.Pointer(iovecs[i].Base), m) @@ -2150,12 +2315,7 @@ func isGroupMember(gid int) bool { return false } - for _, g := range groups { - if g == gid { - return true - } - } - return false + return slices.Contains(groups, gid) } func isCapDacOverrideSet() bool { @@ -2482,3 +2642,6 @@ func SchedGetAttr(pid int, flags uint) (*SchedAttr, error) { } return attr, nil } + +//sys Cachestat(fd uint, crange *CachestatRange, cstat *Cachestat_t, flags uint) (err error) +//sys Mseal(b []byte, flags uint) (err error) |