Try page_duplicate only during reset

Merge pull request #44 from lrowe/cow-written-pages

Merge pull request #43 from lrowe/revert-empty-path-check-removal

Merge pull request #42 from lrowe/syscall-epoll-pwait2

Merge pull request #41 from lrowe/net-permissions

Allow a limited set of flags in fcntl SETFL/GETFL

Allow a limited set of flags in fcntl SETFL/GETFL

Disable F_SETFL, use getcwd for fake lstat

Merge pull request #39 from lrowe/file-permissions-callback

Promote experimental clock_gettime() option to always enabled

Promote experimental clock_gettime() option to always enabled

Use KVM PV wall-clock instead of hypercall

Use KVM PV wall-clock instead of hypercall

Use KVM PV wall-clock instead of hypercall

Use KVM PV wall-clock instead of hypercall

Use hypercall to reduce latency of clock_gettime

Add stubs for flock(), faccessat2() and redirect for epoll_create()

Add stubs for flock(), faccessat2() and redirect for epoll_create()

Allow denying listen()

Use fake lstat for some paths, no longer support

Constrain socket to 3 common domains

Use openat2 for openat and newfstatat for newfstatat

Implement mremap() properly

Distinguish between hint and fixed using MAP_FIXED

Implement msync stub, basic mremap()

Add fchdir(), symlink(), improve stat()

Force new allocation when fixed mmap with prot==0 collides

Merge pull request #38 from lrowe/fix-ioctl-fionbio

Merge pull request #37 from lrowe/always_set_clock_gettime_uses_rdtsc

Fix TLS bug when resetting from different thread