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* imgact: Mark brandinfo and note structures as constMark Johnston2025-10-141-15/+9
| | | | | | | | No functional change intended. Reviewed by: olce, kib, emaste MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D53062
* sysent: retire unused SV_IA32Brooks Davis2025-06-031-1/+1
| | | | | | | | | | | | | When COMPAT_IA32 was generaliaed to COMPAT_FREEBSD32 in 2010 (commit 841c0c7ec75b), all runtime uses of SV_IA32 were removed in favor of SV_ILP32 check. Given SV_ILP32's existance it makes no sense to dynamically check for SV_IA32 (even if we had a 32-bit x86 ABI with 64-bit time_t we needed to differentiate, SV_IA32 would be the wrong spelling.) As such, remove SV_IA32 and mark the bit reserved. Reviewed by: kib Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D50672
* freebsd32: struct siginfo32 -> struct __siginfo32Brooks Davis2024-03-192-3/+3
| | | | | | | | | In the next commit I will update syscalls.master to use struct __siginfo (which actually exists) so this update will be needed to make generated files (from make sysent) align. Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D44380
* sysentvec: add SV_SIGSYS flagKonstantin Belousov2023-10-021-1/+2
| | | | | | | | | | | | | | to allow ABIs to indicate that SIGSYS is needed. Mark all native FreeBSD ABIs with the flag. This implicitly marks Linux' ABIs as not delivering SIGSYS on invalid syscall. Reviewed by: dchagin, markj Discussed with: jhb Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D41976
* sys: Remove $FreeBSD$: one-line .c patternWarner Losh2023-08-162-4/+0
| | | | Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
* sys: Remove $FreeBSD$: two-line .h patternWarner Losh2023-08-162-4/+0
| | | | Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
* sysentvec: Retire sv_imgact_try as unneeded anymoreDmitry Chagin2023-05-291-1/+0
| | | | | | | | | | The sysentvec sv_imgact_try was used by kern_exec() to allow non-native ABI to fixup shell path according to ABI root directory. Since the non-native ABI can now specify its root directory directly to namei() via pwd_altroot() call this facility is not needed anymore. Differential Revision: https://reviews.freebsd.org/D40092 MFC after: 2 month
* Brandinfo: Retire emul_path as unneeded anymoreDmitry Chagin2023-05-291-3/+0
| | | | | | | | | | The Barndinfo emul_path was used by the Elf image activator to fixup interpreter file name according to ABI root directory. Since the non-native ABI can now specify its root directory directly to namei() via pwd_altroot() call this facility is not needed anymore. Differential Revision: https://reviews.freebsd.org/D40091 MFC after: 2 month
* spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSDWarner Losh2023-05-121-1/+1
| | | | | | | | | The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch up to that fact and revert to their recommended match of BSD-2-Clause. Discussed with: pfg MFC After: 3 days Sponsored by: Netflix
* Retire sv_transtrapDmitry Chagin2022-05-201-1/+0
| | | | | | Call translate_traps directly from sendsig(). MFC after: 2 weeks
* Add PT_GETREGSETAndrew Turner2022-01-271-0/+4
| | | | | | | | | | | | | | | | | | | This adds the PT_GETREGSET and PT_SETREGSET ptrace types. These can be used to access all the registers from a specified core dump note type. The NT_PRSTATUS and NT_FPREGSET notes are initially supported. Other machine-dependant types are expected to be added in the future. The ptrace addr points to a struct iovec pointing at memory to hold the registers along with its length. On success the length in the iovec is updated to tell userspace the actual length the kernel wrote or, if the base address is NULL, the length the kernel would have written. Because the data field is an int the arguments are backwards when compared to the Linux PTRACE_GETREGSET call. Reviewed by: kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19831
* exec: Remove the stack gap implementationMark Johnston2022-01-171-1/+0
| | | | | | | | | | | | | | | ASLR stack randomization will reappear in a forthcoming commit. Rather than inserting a random gap into the stack mapping, the entire stack mapping itself will be randomized in the same way that other mappings are when ASLR is enabled. No functional change intended, as the stack gap implementation is currently disabled by default. Reviewed by: kib MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33704
* sysent: Add a sv_psstringssz field to struct sysentvecMark Johnston2022-01-171-0/+1
| | | | | | | | | | | The size of the ps_strings structure varies between ABIs, so this is useful for computing the address of the ps_strings structure relative to the top of the stack when stack address randomization is enabled. Reviewed by: kib MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33704
* ia32_signal.h: Drop #ifdef's for old compat structures.John Baldwin2022-01-141-8/+0
| | | | Requested by: kib
* ia32: Rename a struct ia32_sigcontext3 -> struct ia32_osigcontext.John Baldwin2022-01-141-1/+1
| | | | Fixes: bd7630ef6198 ia32: Sync signal context type names with i386.
* ia32: Sync signal context type names with i386.John Baldwin2022-01-143-18/+18
| | | | | | | | | - Use ia32_freebsd4_* instead of ia32_*4. - Use ia32_o* instead of ia32_*3. Reviewed by: brooks, imp, kib Sponsored by: The University of Cambridge, Google Inc. Differential Revision: https://reviews.freebsd.org/D33882
* sys/compat: Use C99 fixed-width integer types.John Baldwin2021-12-281-92/+92
| | | | | | | No functional change. Reviewed by: imp Differential Revision: https://reviews.freebsd.org/D33632
* amd64 ia32 vdso: add unwind annotations to the signal trampolineKonstantin Belousov2021-12-061-3/+17
| | | | | | | | | Reviewed by: emaste Discussed with: jhb, jrtc27 Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D32960
* vdso for ia32 on amd64Konstantin Belousov2021-12-062-11/+10
| | | | | | | | | Reviewed by: emaste Discussed with: jrtc27 Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D32960
* fork: Allow ABI to specify fork return values for child.Dmitry Chagin2021-08-121-0/+1
| | | | | | | | | | | | At least Linux x86 ABI's does not use carry bit and expects that the dx register is preserved. For this add a new sv_set_fork_retval hook and call it from cpu_fork(). Add a short comment about touching dx in x86_set_fork_retval(), for more details see phab comments from kib@ and imp@. Reviewed by: kib Differential revision: https://reviews.freebsd.org/D31472 MFC after: 2 weeks
* Do not call FreeBSD-ABI specific code for all ABIsKonstantin Belousov2021-07-071-0/+2
| | | | | | | | | | | | Use sysentvec hooks to only call umtx_thread_exit/umtx_exec, which handle robust mutexes, for native FreeBSD ABI. Similarly, there is no sense in calling sigfastblock_clear() for non-native ABIs. Requested by: dchagin Reviewed by: dchagin, markj (previous version) Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Differential revision: https://reviews.freebsd.org/D30987
* Add infrastructure required for Linux coredump supportEdward Tomasz Napierala2021-06-291-0/+3
| | | | | | | | | | | | | | | | This adds `sv_elf_core_osabi`, `sv_elf_core_abi_vendor`, and `sv_elf_core_prepare_notes` fields to `struct sysentvec`, and modifies imgact_elf.c to make use of them instead of hardcoding FreeBSD-specific values. It also updates all of the ABI definitions to preserve current behaviour. This makes it possible to implement non-native ELF coredump support without unnecessary code duplication. It will be used for Linux coredumps. Reviewed By: kib Sponsored By: EPSRC Differential Revision: https://reviews.freebsd.org/D30921
* random(4) FenestrasX: Push root seed version to arc4random(3)Conrad Meyer2020-10-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Push the root seed version to userspace through the VDSO page, if the RANDOM_FENESTRASX algorithm is enabled. Otherwise, there is no functional change. The mechanism can be disabled with debug.fxrng_vdso_enable=0. arc4random(3) obtains a pointer to the root seed version published by the kernel in the shared page at allocation time. Like arc4random(9), it maintains its own per-process copy of the seed version corresponding to the root seed version at the time it last rekeyed. On read requests, the process seed version is compared with the version published in the shared page; if they do not match, arc4random(3) reseeds from the kernel before providing generated output. This change does not implement the FenestrasX concept of PCPU userspace generators seeded from a per-process base generator. That change is left for future discussion/work. Reviewed by: kib (previous version) Approved by: csprng (me -- only touching FXRNG here) Differential Revision: https://reviews.freebsd.org/D22839 Notes: svn path=/head/; revision=366622
* Get rid of sv_errtbl and SV_ABI_ERRNO().Edward Tomasz Napierala2020-09-171-2/+0
| | | | | | | | | Reviewed by: kib Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D26388 Notes: svn path=/head/; revision=365832
* compat: clean up empty lines in .c and .h filesMateusz Guzik2020-09-011-1/+0
| | | | Notes: svn path=/head/; revision=365080
* Retire procfs-based process debugging.John Baldwin2020-04-011-1/+0
| | | | | | | | | | | | | | | | | | Modern debuggers and process tracers use ptrace() rather than procfs for debugging. ptrace() has a supserset of functionality available via procfs and new debugging features are only added to ptrace(). While the two debugging services share some fields in struct proc, they each use dedicated fields and separate code. This results in extra complexity to support a feature that hasn't been enabled in the default install for several years. PR: 244939 (exp-run) Reviewed by: kib, mjg (earlier version) Relnotes: yes Differential Revision: https://reviews.freebsd.org/D23837 Notes: svn path=/head/; revision=359530
* Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many)Pawel Biernacki2020-02-261-1/+2
| | | | | | | | | | | | | | | | | | | r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718 Notes: svn path=/head/; revision=358333
* Use uintptr_t instead of register_t * for the stack base.John Baldwin2019-12-031-1/+1
| | | | | | | | | | | | | | | | | | | - Use ustringp for the location of the argv and environment strings and allow destp to travel further down the stack for the stackgap and auxv regions. - Update the Linux copyout_strings variants to move destp down the stack as was done for the native ABIs in r263349. - Stop allocating a space for a stack gap in the Linux ABIs. This used to hold translated system call arguments, but hasn't been used since r159992. Reviewed by: kib Tested on: md64 (amd64, i386, linux64), i386 (i386, linux) Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D22501 Notes: svn path=/head/; revision=355373
* Add a sv_copyout_auxargs() hook in sysentvec.John Baldwin2019-11-151-0/+1
| | | | | | | | | | | | | | | | | | Change the FreeBSD ELF ABIs to use this new hook to copyout ELF auxv instead of doing it in the sv_fixup hook. In particular, this new hook allows the stack space to be allocated at the same time the auxv values are copied out to userland. This allows us to avoid wasting space for unused auxv entries as well as not having to recalculate where the auxv vector is by walking back up over the argv and environment vectors. Reviewed by: brooks, emaste Tested on: amd64 (amd64 and i386 binaries), i386, mips, mips64 Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D22355 Notes: svn path=/head/; revision=354741
* Make randomized stack gap between strings and pointers to argv/envs.Konstantin Belousov2019-07-311-0/+1
| | | | | | | | | | | | | | | | | | | | | This effectively makes the stack base on the csu _start entry randomized. The gap is enabled if ASLR is for the ABI is enabled, and then kern.elf{64,32}.aslr.stack_gap specify the max percentage of the initial stack size that can be wasted for gap. Setting it to zero disables the gap, and max is capped at 50%. Only amd64 for now. Reviewed by: cem, markj Discussed with: emaste MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D21081 Notes: svn path=/head/; revision=350484
* Remove sv_pagesize, originally introduced with r100384.Edward Tomasz Napierala2019-03-011-1/+0
| | | | | | | | | | | | | | | | In all of the architectures we have today, we always use PAGE_SIZE. While in theory one could define different things, none of the current architectures do, even the ones that have transitioned from 32-bit to 64-bit like i386 and arm. Some ancient mips binaries on other systems used 8k instead of 4k, but we don't support running those and likely never will due to their age and obscurity. Reviewed by: imp (who also contributed the commit message) Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D19280 Notes: svn path=/head/; revision=344705
* Implement Address Space Layout Randomization (ASLR)Konstantin Belousov2019-02-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With this change, randomization can be enabled for all non-fixed mappings. It means that the base address for the mapping is selected with a guaranteed amount of entropy (bits). If the mapping was requested to be superpage aligned, the randomization honours the superpage attributes. Although the value of ASLR is diminshing over time as exploit authors work out simple ASLR bypass techniques, it elimintates the trivial exploitation of certain vulnerabilities, at least in theory. This implementation is relatively small and happens at the correct architectural level. Also, it is not expected to introduce regressions in existing cases when turned off (default for now), or cause any significant maintaince burden. The randomization is done on a best-effort basis - that is, the allocator falls back to a first fit strategy if fragmentation prevents entropy injection. It is trivial to implement a strong mode where failure to guarantee the requested amount of entropy results in mapping request failure, but I do not consider that to be usable. I have not fine-tuned the amount of entropy injected right now. It is only a quantitive change that will not change the implementation. The current amount is controlled by aslr_pages_rnd. To not spoil coalescing optimizations, to reduce the page table fragmentation inherent to ASLR, and to keep the transient superpage promotion for the malloced memory, locality clustering is implemented for anonymous private mappings, which are automatically grouped until fragmentation kicks in. The initial location for the anon group range is, of course, randomized. This is controlled by vm.cluster_anon, enabled by default. The default mode keeps the sbrk area unpopulated by other mappings, but this can be turned off, which gives much more breathing bits on architectures with small address space, such as i386. This is tied with the question of following an application's hint about the mmap(2) base address. Testing shows that ignoring the hint does not affect the function of common applications, but I would expect more demanding code could break. By default sbrk is preserved and mmap hints are satisfied, which can be changed by using the kern.elf{32,64}.aslr.honor_sbrk sysctl. ASLR is enabled on per-ABI basis, and currently it is only allowed on FreeBSD native i386 and amd64 (including compat 32bit) ABIs. Support for additional architectures will be added after further testing. Both per-process and per-image controls are implemented: - procctl(2) adds PROC_ASLR_CTL/PROC_ASLR_STATUS; - NT_FREEBSD_FCTL_ASLR_DISABLE feature control note bit makes it possible to force ASLR off for the given binary. (A tool to edit the feature control note is in development.) Global controls are: - kern.elf{32,64}.aslr.enable - for non-fixed mappings done by mmap(2); - kern.elf{32,64}.aslr.pie_enable - for PIE image activation mappings; - kern.elf{32,64}.aslr.honor_sbrk - allow to use sbrk area for mmap(2); - vm.cluster_anon - enables anon mapping clustering. PR: 208580 (exp runs) Exp-runs done by: antoine Reviewed by: markj (previous version) Discussed with: emaste Tested by: pho MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D5603 Notes: svn path=/head/; revision=343964
* Remove iBCS2, part2: general kernelMateusz Guzik2018-12-191-1/+0
| | | | | | | | Reviewed by: kib (previous version) Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=342243
* Move most of the contents of opt_compat.h to opt_global.h.Brooks Davis2018-04-062-4/+0
| | | | | | | | | | | | | | | | | | | | | opt_compat.h is mentioned in nearly 180 files. In-progress network driver compabibility improvements may add over 100 more so this is closer to "just about everywhere" than "only some files" per the guidance in sys/conf/options. Keep COMPAT_LINUX32 in opt_compat.h as it is confined to a subset of sys/compat/linux/*.c. A fake _COMPAT_LINUX option ensure opt_compat.h is created on all architectures. Move COMPAT_LINUXKPI to opt_dontuse.h as it is only used to control the set of compiled files. Reviewed by: kib, cem, jhb, jtl Sponsored by: DARPA, AFRL Differential Revision: https://reviews.freebsd.org/D14941 Notes: svn path=/head/; revision=332122
* sys/compat: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-273-0/+6
| | | | | | | | | | | | | | | Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Notes: svn path=/head/; revision=326266
* Move struct syscall_args syscall arguments parameters container intoKonstantin Belousov2017-06-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | struct thread. For all architectures, the syscall trap handlers have to allocate the structure on the stack. The structure takes 88 bytes on 64bit arches which is not negligible. Also, it cannot be easily found by other code, which e.g. caused duplication of some members of the structure to struct thread already. The change removes td_dbg_sc_code and td_dbg_sc_nargs which were directly copied from syscall_args. The structure is put into the copied on fork part of the struct thread to make the syscall arguments information correct in the child after fork. This move will also allow several more uses shortly. Reviewed by: jhb (previous version) Sponsored by: The FreeBSD Foundation MFC after: 3 weeks X-Differential revision: https://reviews.freebsd.org/D11080 Notes: svn path=/head/; revision=319873
* With the removal of IA64, the only arch which uses ia32 compat is amd64.Konstantin Belousov2017-03-011-5/+2
| | | | | | | | Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Notes: svn path=/head/; revision=314489
* Tidy up ia32_sysvec sv_flags settingEd Maste2016-10-201-5/+3
| | | | | | | | Use the same approach as sys/arm/arm/elf_machdep.c to avoid an odd- looking , on a separate line. Notes: svn path=/head/; revision=307688
* Add missing header dependency.Ed Schouten2016-08-241-0/+2
| | | | | | | This header depends on sigaltstack32 being declared. Notes: svn path=/head/; revision=304740
* Implement vsyscall hack. Prior to 2.13 glibc uses vsyscallDmitry Chagin2016-01-091-0/+1
| | | | | | | | | | | | instead of vdso. An upcoming linux_base-c6 needs it. Differential Revision: https://reviews.freebsd.org/D1090 Reviewed by: kib, trasz MFC after: 1 week Notes: svn path=/head/; revision=293613
* Remove sv_prepsyscall, sv_sigsize and sv_sigtbl members of the structKonstantin Belousov2015-11-281-3/+0
| | | | | | | | | | | | | | | | | | | sysent. sv_prepsyscall is unused. sv_sigsize and sv_sigtbl translate signal number from the FreeBSD namespace into the ABI domain. It is only utilized on i386 for iBCS2 binaries. The issue with this approach is that signals for iBCS2 were delivered with the FreeBSD signal frame layout, which does not follow iBCS2. The same note is true for any other potential user if sv_sigtbl. In other words, if ABI needs signal number translation, it really needs custom sv_sendsig method instead. Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=291420
* Split kerne timekeep ABI structure vdso_sv_tk out of the structKonstantin Belousov2015-11-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | sysentvec. This allows the timekeep data to be shared between similar ABIs which cannot share sysentvec. Make the timekeep_push_vdso() tick callback to the timekeep structures instead of sysentvecs. If several sysentvec share the vdso_sv_tk structure, we would update the userspace data several times on each tick, without the change. Only allocate vdso_sv_tk in the exec_sysvec_init() sysinit when sysentvec is marked with the new SV_TIMEKEEP flag. This saves allocation and update of unneeded vdso_sv_tk for ABIs which do not provide userspace gettimeofday yet, which are PowerPCs arches right now. Make vdso_sv_tk allocator public, namely split out and export alloc_sv_tk() and alloc_sv_tk_compat32(). ABIs which share timekeep data now can allocate it manually and share as appropriate. Requested by: nwhitehorn Tested by: nwhitehorn, pho Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Notes: svn path=/head/; revision=291171
* In preparation for switching linuxulator to the use the native 1:1Dmitry Chagin2015-05-241-0/+1
| | | | | | | | | threads add a hook for cleaning thread resources before the thread die. Differential Revision: https://reviews.freebsd.org/D1038 Notes: svn path=/head/; revision=283382
* Improve support for XSAVE with debuggers.John Baldwin2014-11-211-2/+18
| | | | | | | | | | | | | | | | | | | | | | - Dump an NT_X86_XSTATE note if XSAVE is in use. This note is designed to match what Linux does in that 1) it dumps the entire XSAVE area including the fxsave state, and 2) it stashes a copy of the current xsave mask in the unused padding between the fxsave state and the xstate header at the same location used by Linux. - Teach readelf() to recognize NT_X86_XSTATE notes. - Change PT_GET/SETXSTATE to take the entire XSAVE state instead of only the extra portion. This avoids having to always make two ptrace() calls to get or set the full XSAVE state. - Add a PT_GET_XSTATE_INFO which returns the length of the current XSTATE save area (so the size of the buffer needed for PT_GETXSTATE) and the current XSAVE mask (%xcr0). Differential Revision: https://reviews.freebsd.org/D1193 Reviewed by: kib MFC after: 2 weeks Notes: svn path=/head/; revision=274817
* Remove ia64.Marcel Moolenaar2014-07-071-7/+0
| | | | | | | | | | | | | | | | | | | | This includes: o All directories named *ia64* o All files named *ia64* o All ia64-specific code guarded by __ia64__ o All ia64-specific makefile logic o Mention of ia64 in comments and documentation This excludes: o Everything under contrib/ o Everything under crypto/ o sys/xen/interface o sys/sys/elf_common.h Discussed at: BSDcan Notes: svn path=/head/; revision=268351
* Pull in r267961 and r267973 again. Fix for issues reported will follow.Hans Petter Selasky2014-06-281-6/+3
| | | | Notes: svn path=/head/; revision=267992
* Revert r267961, r267973:Glen Barber2014-06-271-3/+6
| | | | | | | | | | | | | These changes prevent sysctl(8) from returning proper output, such as: 1) no output from sysctl(8) 2) erroneously returning ENOMEM with tools like truss(1) or uname(1) truss: can not get etype: Cannot allocate memory Notes: svn path=/head/; revision=267985
* Extend the meaning of the CTLFLAG_TUN flag to automatically check ifHans Petter Selasky2014-06-271-6/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | there is an environment variable which shall initialize the SYSCTL during early boot. This works for all SYSCTL types both statically and dynamically created ones, except for the SYSCTL NODE type and SYSCTLs which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to be used in the case a tunable sysctl has a custom initialisation function allowing the sysctl to still be marked as a tunable. The kernel SYSCTL API is mostly the same, with a few exceptions for some special operations like iterating childrens of a static/extern SYSCTL node. This operation should probably be made into a factored out common macro, hence some device drivers use this. The reason for changing the SYSCTL API was the need for a SYSCTL parent OID pointer and not only the SYSCTL parent OID list pointer in order to quickly generate the sysctl path. The motivation behind this patch is to avoid parameter loading cludges inside the OFED driver subsystem. Instead of adding special code to the OFED driver subsystem to post-load tunables into dynamically created sysctls, we generalize this in the kernel. Other changes: - Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask" to "hw.pcic.intr_mask". - Removed redundant TUNABLE statements throughout the kernel. - Some minor code rewrites in connection to removing not needed TUNABLE statements. - Added a missing SYSCTL_DECL(). - Wrapped two very long lines. - Avoid malloc()/free() inside sysctl string handling, in case it is called to initialize a sysctl from a tunable, hence malloc()/free() is not ready when sysctls from the sysctl dataset are registered. - Bumped FreeBSD version to indicate SYSCTL API change. MFC after: 2 weeks Sponsored by: Mellanox Technologies Notes: svn path=/head/; revision=267961
* Cosmetics: define FREEBSD32_MINUSER and AOUT32_MINUSER for structKonstantin Belousov2012-07-222-9/+10
| | | | | | | | | | sysentvec .sv_minuser. Also improve style. Submitted by: Oliver Pinter <oliver.pinter@gmail.com> MFC after: 1 week Notes: svn path=/head/; revision=238687
* Remove some unnecessary includes.Tijl Coosemans2012-03-181-9/+0
| | | | Notes: svn path=/head/; revision=233127
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