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path: root/sys/compat/linux/arch/amd64
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2021-12-02regenryo
2021-12-02add prlimit64(2) syscall to COMPAT_LINUX and COMPAT_LINUX32ryo
2021-11-26- LINUX_GO_RT0_SIGNATURE for compat_linux is no longer enabled by default.ryo
it is now defined in each arch same as the other *_SIGNATURE definitions. - add new LINUX32_GO_RT0_SIGNATURE for compat_linux32, and is defined in amd64 and aarch64.
2021-10-27Use __SIGTRAMP_SIGCODE_VERSION rather than hard-coding 0.thorpej
2021-10-12fix various typos, mainly in comments.andvar
2021-09-20Regen for preadv(2) / pwritev(2).thorpej
2021-09-20Add preadv(2) and pwritev(2) system calls to COMPAT_LINUX and COMPAT_LINUX32.thorpej
2021-09-20Regen for eventfd.thorpej
2021-09-20Add the eventfd system calls to COMPAT_LINUX and COMPAT_LINUX32.thorpej
2021-09-19Regen for timerfd.thorpej
2021-09-19Add the timerfd syscalls to COMPAT_LINUX and COMPAT_LINUX32.thorpej
2021-09-19Regen for POSIX timer syscalls.thorpej
2021-09-19Add the POSIX timer syscalls (timer_create(), timer_settime(), timer_gettime(),thorpej
timer_getoverrun(), and timer_delete()) to COMPAT_LINUX and COMPAT_LINUX32.
2021-09-07sys/compat: Memset zero before copyout.riastradh
Just in case of uninitialized padding which would lead to kernel stack disclosure. If the compiler can prove the memset redundant then it can optimize it away; otherwise better safe than sorry.
2020-09-05Round of uvm.h cleanup.riastradh
The poorly named uvm.h is generally supposed to be for uvm-internal users only. - Narrow it to files that actually need it -- mostly files that need to query whether curlwp is the pagedaemon, which should maybe be exposed by an external header. - Use uvm_extern.h where feasible and uvm_*.h for things not exposed by it. We should split up uvm_extern.h but this will serve for now to reduce the uvm.h dependencies. - Use uvm_stat.h and #ifdef UVMHIST uvm.h for files that use UVMHIST(ubchist), since ubchist is declared in uvm.h but the reference evaporates if UVMHIST is not defined, so we reduce header file dependencies. - Make uvm_device.h and uvm_swap.h independently includable while here. ok chs@
2020-05-03Always clear FUTEX_PRIVATE_FLAG for Linux processes. NetBSD-native futexesthorpej
exist in different namespace depending on FUTEX_PRIVATE_FLAG. This appears not to be the case in Linux, and some futex users will mix private and non- private ops on the same futex object. Provide a convenience wrapper that puts this logic in one place witn a comment explaining why. While here, move the Linux futex wrapper out of its own file and plop it in linux_misc.c, which is where it lives in the linux32 module.
2020-04-26Regen for native futex calls.thorpej
2020-04-26Add a NetBSD native futex implementation, mostly written by riastradh@.thorpej
Map the COMPAT_LINUX futex calls to the native ones.
2020-01-12Tidy up the vnode locking around execve() on ELF images to acquire andad
release the locks fewer times. Proposed on tech-kern a very long time go.
2019-11-09regenjdolecek
2019-11-09add dummy implementation of linux fallocate() which just returns EOPNOTSUPP;jdolecek
this is needed so that glibc falls back to emulation and apps behaving properly, since EOPNOTSUPP is a documented and expected return code, but ENOSYS is not right now there are no filesystems in NetBSD tree supporting the fallocate VOP, so no point trying to map this to a native call supposed to help with problem reported in https://mail-index.netbsd.org/tech-kern/2019/11/03/msg025641.html
2019-08-23Remove printf.maxv
2019-05-19Renamemaxv
fpu_save_area_clear -> fpu_clear fpu_save_area_reset -> fpu_sigreset Clearer, and reduces a future diff. No real functional change.
2019-03-24Fix a tiny race in setregs and linux_setregs. Between the moment we setmaxv
pcb_flags to zero, and the moment cpu_segregs64_zero resets pcb_gs, we may be preempted. If this happens, and if the calling LWP was a 32bit thread, when switching back to that LWP, the context switcher sees that PCB_COMPAT32 is not set in pcb_flags and tries to perform a 64bit context switch; but pcb_gs contains a 32bit GDT descriptor, and not a 64bit GS.base value. The wrmsr therefore faults because the value is non-canonical, and this fault is fatal. Rearrange the code so that the update of pcb_flags and pcb_gs/pcb_fs is non interruptible. This fixes the problem, tested with a reproducer (which therefore doesn't work anymore). Likely fixes PR/53993.
2018-08-10Regenpgoyette
2018-01-01Use the default %cs, and mask the other segregs.maxv
2017-10-21Include opt_user_ldt.h when needed.maxv
2017-10-19Always mask the 16 bits of the segregs in the trapframe. We don't zero-maxv
extend the uint64_t's when building it, so we're leaking 48 bits of kernel stack to userland. Having said that, it appears that I unintentionally fixed most of this issue in locore.S::rev1.127 - by building the frame with interrupts disabled, we are implicitly guaranteeing that the structure doesn't get overwritten by the kernel. Which means, we are leaking to userland data that comes from userland anyway. (still other places with this issue, but I'll fix them differently)
2017-10-15Use two separate functions: cpu_segregs32_zero and cpu_segregs64_zero. Themaxv
way segment registers work on amd64 will diverge between 32bit and 64bit LWPs.
2017-07-14Don't forget to clean l_md.md_flags, otherwise there may be MDL_COMPAT32,maxv
in which case the kernel would always use iret (slower).
2017-05-10regenriastradh
2017-02-13Make sure %rip is in userland. This is harmless, since the return tomaxv
userland is made with iret instead of sysret in this path. While here, use size_t.
2017-02-13Don't let userland choose %rip. This is the Intel Sysret vulnerabilitymaxv
again.
2017-02-05Missing pmap_ldt_cleanup.maxv
2017-02-03regenchristos
2017-02-03add sendmmsg and recvmmsgchristos
2017-02-02regenchristos
2017-02-02implement accept4christos
XXX: mips looks busted (the syscalls file has lots of NOARGS syscalls that should be STD).
2017-01-16regen allchristos
2017-01-13regenchristos
2017-01-02Regen (something apparently went wrong in previous)martin
2017-01-02Regenmanu
2017-01-02Add pselect6 Linux system call.manu
This lets Matlab R2016A run on NetBSD/amd64
2016-07-24Regen for readlink/readlinkat signatures.njoly
2016-07-24Small cleanup. Adjust readlink/readlinkat signatures to reduce diffs withnjoly
native.
2015-11-14PR/50428: Rin Okuyama: support SA_RESTORER flag for rt_sigaction(2) in thechristos
ports that support it.
2015-10-27Regennjoly
2015-10-27Fix setuid/setgid return type (void -> int) to match native.njoly
2015-09-24regenchristos
2015-05-31Regen for write(2) size argument fix.njoly