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2146 files changed
+112256
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@@ -1874,6 +1874,7 @@ func Dup2(oldfd, newfd int) error {
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//sys Dup3(oldfd int, newfd int, flags int) (err error)
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//sysnb EpollCreate1(flag int) (fd int, err error)
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//sysnb EpollCtl(epfd int, op int, fd int, event *EpollEvent) (err error)
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//sys EpollWait(epfd int, events []EpollEvent, msec int) (n int, err error) = SYS_EPOLL_PWAIT
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//sys Eventfd(initval uint, flags int) (fd int, err error) = SYS_EVENTFD2
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//sys Exit(code int) = SYS_EXIT_GROUP
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//sys Fallocate(fd int, mode uint32, off int64, len int64) (err error)
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@@ -2150,33 +2151,10 @@ func Signalfd(fd int, sigmask *Sigset_t, flags int) (newfd int, err error) {
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//sys exitThread(code int) (err error) = SYS_EXIT
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//sys readv(fd int, iovs []Iovec) (n int, err error) = SYS_READV
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//sys writev(fd int, iovs []Iovec) (n int, err error) = SYS_WRITEV
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//sys preadv(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PREADV
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//sys pwritev(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PWRITEV
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//sys preadv2(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PREADV2
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//sys pwritev2(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PWRITEV2
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// minIovec is the size of the small initial allocation used by
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// Readv, Writev, etc.
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//
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// This small allocation gets stack allocated, which lets the
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// common use case of len(iovs) <= minIovs avoid more expensive
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// heap allocations.
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const minIovec = 8
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// appendBytes converts bs to Iovecs and appends them to vecs.
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func appendBytes(vecs []Iovec, bs [][]byte) []Iovec {
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for _, b := range bs {
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var v Iovec
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v.SetLen(len(b))
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if len(b) > 0 {
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v.Base = &b[0]
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} else {
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v.Base = (*byte)(unsafe.Pointer(&_zero))
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}
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vecs = append(vecs, v)
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}
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return vecs
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}
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//sys preadvSyscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PREADV
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//sys pwritevSyscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr) (n int, err error) = SYS_PWRITEV
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//sys preadv2Syscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PREADV2
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//sys pwritev2Syscall(fd int, iovs []Iovec, offs_l uintptr, offs_h uintptr, flags int) (n int, err error) = SYS_PWRITEV2
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// offs2lohi splits offs into its low and high order bits.
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func offs2lohi(offs int64) (lo, hi uintptr) {
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@@ -2184,69 +2162,23 @@ func offs2lohi(offs int64) (lo, hi uintptr) {
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return uintptr(offs), uintptr(uint64(offs) >> (longBits - 1) >> 1) // two shifts to avoid false positive in vet
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}
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func Readv(fd int, iovs [][]byte) (n int, err error) {
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iovecs := make([]Iovec, 0, minIovec)
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iovecs = appendBytes(iovecs, iovs)
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n, err = readv(fd, iovecs)
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readvRacedetect(iovecs, n, err)
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return n, err
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}
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func Preadv(fd int, iovs [][]byte, offset int64) (n int, err error) {
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iovecs := make([]Iovec, 0, minIovec)
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iovecs = appendBytes(iovecs, iovs)
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func preadv(fd int, iovecs []Iovec, offset int64) (n int, err error) {
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lo, hi := offs2lohi(offset)
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n, err = preadv(fd, iovecs, lo, hi)
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readvRacedetect(iovecs, n, err)
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return n, err
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return preadvSyscall(fd, iovecs, lo, hi)
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}
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func Preadv2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error) {
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iovecs := make([]Iovec, 0, minIovec)
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iovecs = appendBytes(iovecs, iovs)
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lo, hi := offs2lohi(offset)
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n, err = preadv2(fd, iovecs, lo, hi, flags)
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readvRacedetect(iovecs, n, err)
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n, err = preadv2Syscall(fd, iovecs, lo, hi, flags)
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readvRaceDetect(iovecs, n, err)
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return n, err
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}
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func readvRacedetect(iovecs []Iovec, n int, err error) {
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if !raceenabled {
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return
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}
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for i := 0; n > 0 && i < len(iovecs); i++ {
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m := min(int(iovecs[i].Len), n)
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n -= m
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if m > 0 {
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raceWriteRange(unsafe.Pointer(iovecs[i].Base), m)
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}
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}
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if err == nil {
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raceAcquire(unsafe.Pointer(&ioSync))
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}
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}
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func Writev(fd int, iovs [][]byte) (n int, err error) {
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iovecs := make([]Iovec, 0, minIovec)
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iovecs = appendBytes(iovecs, iovs)
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if raceenabled {
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raceReleaseMerge(unsafe.Pointer(&ioSync))
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}
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n, err = writev(fd, iovecs)
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writevRacedetect(iovecs, n)
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return n, err
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}
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func Pwritev(fd int, iovs [][]byte, offset int64) (n int, err error) {
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iovecs := make([]Iovec, 0, minIovec)
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iovecs = appendBytes(iovecs, iovs)
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if raceenabled {
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raceReleaseMerge(unsafe.Pointer(&ioSync))
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}
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func pwritev(fd int, iovecs []Iovec, offset int64) (n int, err error) {
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lo, hi := offs2lohi(offset)
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n, err = pwritev(fd, iovecs, lo, hi)
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writevRacedetect(iovecs, n)
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return n, err
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return pwritevSyscall(fd, iovecs, lo, hi)
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}
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func Pwritev2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error) {
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@@ -2256,24 +2188,11 @@ func Pwritev2(fd int, iovs [][]byte, offset int64, flags int) (n int, err error)
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raceReleaseMerge(unsafe.Pointer(&ioSync))
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}
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lo, hi := offs2lohi(offset)
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n, err = pwritev2(fd, iovecs, lo, hi, flags)
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writevRacedetect(iovecs, n)
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n, err = pwritev2Syscall(fd, iovecs, lo, hi, flags)
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writevRaceDetect(iovecs, n)
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return n, err
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}
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func writevRacedetect(iovecs []Iovec, n int) {
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if !raceenabled {
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return
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}
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for i := 0; n > 0 && i < len(iovecs); i++ {
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m := min(int(iovecs[i].Len), n)
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n -= m
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if m > 0 {
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raceReadRange(unsafe.Pointer(iovecs[i].Base), m)
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}
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}
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}
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// mmap varies by architecture; see syscall_linux_*.go.
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//sys munmap(addr uintptr, length uintptr) (err error)
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//sys mremap(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (xaddr uintptr, err error)
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@@ -2444,7 +2363,7 @@ func (fh *FileHandle) Bytes() []byte {
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if n == 0 {
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return nil
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}
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return unsafe.Slice((*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(&fh.fileHandle.Type))+4)), n)
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return unsafe.Slice((*byte)(unsafe.Add(unsafe.Pointer(&fh.fileHandle.Type), 4)), n)
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}
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// NameToHandleAt wraps the name_to_handle_at system call; it obtains
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@@ -2644,8 +2563,12 @@ func SchedGetAttr(pid int, flags uint) (*SchedAttr, error) {
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//sys Cachestat(fd uint, crange *CachestatRange, cstat *Cachestat_t, flags uint) (err error)
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//sys Mseal(b []byte, flags uint) (err error)
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//sys setMemPolicy(mode int, mask *CPUSet, size int) (err error) = SYS_SET_MEMPOLICY
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//sys setMemPolicy(mode int, mask unsafe.Pointer, size uintptr) (err error) = SYS_SET_MEMPOLICY
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func SetMemPolicy(mode int, mask *CPUSet) error {
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return setMemPolicy(mode, mask, _CPU_SETSIZE)
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return setMemPolicy(mode, unsafe.Pointer(mask), _CPU_SETSIZE)
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}
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func SetMemPolicyDynamic(mode int, mask CPUSetDynamic) error {
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return setMemPolicy(mode, mask.pointer(), mask.size())
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}
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