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https://github.com/mjl-/mox.git
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update dependencies
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63
vendor/golang.org/x/sys/unix/syscall_linux.go
generated
vendored
63
vendor/golang.org/x/sys/unix/syscall_linux.go
generated
vendored
@ -1885,7 +1885,7 @@ func Getpgrp() (pid int) {
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//sys PerfEventOpen(attr *PerfEventAttr, pid int, cpu int, groupFd int, flags int) (fd int, err error)
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//sys PivotRoot(newroot string, putold string) (err error) = SYS_PIVOT_ROOT
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//sys Prctl(option int, arg2 uintptr, arg3 uintptr, arg4 uintptr, arg5 uintptr) (err error)
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//sys Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) = SYS_PSELECT6
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//sys pselect6(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *sigset_argpack) (n int, err error)
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//sys read(fd int, p []byte) (n int, err error)
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//sys Removexattr(path string, attr string) (err error)
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//sys Renameat2(olddirfd int, oldpath string, newdirfd int, newpath string, flags uint) (err error)
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@ -2125,28 +2125,6 @@ func writevRacedetect(iovecs []Iovec, n int) {
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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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var mapper = &mremapMmapper{
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mmapper: mmapper{
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active: make(map[*byte][]byte),
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mmap: mmap,
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munmap: munmap,
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},
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mremap: mremap,
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}
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func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, err error) {
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return mapper.Mmap(fd, offset, length, prot, flags)
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}
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func Munmap(b []byte) (err error) {
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return mapper.Munmap(b)
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}
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func Mremap(oldData []byte, newLength int, flags int) (data []byte, err error) {
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return mapper.Mremap(oldData, newLength, flags)
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}
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//sys Madvise(b []byte, advice int) (err error)
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//sys Mprotect(b []byte, prot int) (err error)
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//sys Mlock(b []byte) (err error)
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@ -2155,6 +2133,12 @@ func Mremap(oldData []byte, newLength int, flags int) (data []byte, err error) {
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//sys Munlock(b []byte) (err error)
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//sys Munlockall() (err error)
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const (
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mremapFixed = MREMAP_FIXED
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mremapDontunmap = MREMAP_DONTUNMAP
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mremapMaymove = MREMAP_MAYMOVE
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)
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// Vmsplice splices user pages from a slice of Iovecs into a pipe specified by fd,
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// using the specified flags.
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func Vmsplice(fd int, iovs []Iovec, flags int) (int, error) {
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@ -2454,6 +2438,39 @@ func Getresgid() (rgid, egid, sgid int) {
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return int(r), int(e), int(s)
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}
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// Pselect is a wrapper around the Linux pselect6 system call.
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// This version does not modify the timeout argument.
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func Pselect(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
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// Per https://man7.org/linux/man-pages/man2/select.2.html#NOTES,
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// The Linux pselect6() system call modifies its timeout argument.
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// [Not modifying the argument] is the behavior required by POSIX.1-2001.
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var mutableTimeout *Timespec
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if timeout != nil {
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mutableTimeout = new(Timespec)
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*mutableTimeout = *timeout
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}
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// The final argument of the pselect6() system call is not a
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// sigset_t * pointer, but is instead a structure
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var kernelMask *sigset_argpack
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if sigmask != nil {
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wordBits := 32 << (^uintptr(0) >> 63) // see math.intSize
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// A sigset stores one bit per signal,
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// offset by 1 (because signal 0 does not exist).
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// So the number of words needed is ⌈__C_NSIG - 1 / wordBits⌉.
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sigsetWords := (_C__NSIG - 1 + wordBits - 1) / (wordBits)
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sigsetBytes := uintptr(sigsetWords * (wordBits / 8))
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kernelMask = &sigset_argpack{
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ss: sigmask,
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ssLen: sigsetBytes,
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}
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}
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return pselect6(nfd, r, w, e, mutableTimeout, kernelMask)
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}
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/*
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* Unimplemented
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*/
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