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* osd(9): Change array pointer to array pointer type from void*Conrad Meyer2016-04-261-1/+1
| | | | | | | | | | | | | | | | This is a minor follow-up to r297422, prompted by a Coverity warning. (It's not a real defect, just a code smell.) OSD slot array reservations are an array of pointers (void **) but were cast to void* and back unnecessarily. Keep the correct type from reservation to use. osd.9 is updated to match, along with a few trivial igor fixes. Reported by: Coverity CID: 1353811 Sponsored by: EMC / Isilon Storage Division Notes: svn path=/head/; revision=298661
* Redo the changes to the SYSV IPC sysctl functions from r298585, so theyJamie Gritton2016-04-261-28/+18
| | | | | | | | | don't (mis)use sbufs. PR: 48471 Notes: svn path=/head/; revision=298656
* sys: extend use of the howmany() macro when available.Pedro F. Giffuni2016-04-261-1/+1
| | | | | | | | We have a howmany() macro in the <sys/param.h> header that is convenient to re-use as it makes things easier to read. Notes: svn path=/head/; revision=298649
* Encapsulate SYSV IPC objects in jails. Define per-module parametersJamie Gritton2016-04-251-39/+347
| | | | | | | | | | | | | | | | | | | | | | | sysvmsg, sysvsem, and sysvshm, with the following bahavior: inherit: allow full access to the IPC primitives. This is the same as the current setup with allow.sysvipc is on. Jails and the base system can see (and moduly) each other's objects, which is generally considered a bad thing (though may be useful in some circumstances). disable: all no access, same as the current setup with allow.sysvipc off. new: A jail may see use the IPC objects that it has created. It also gets its own IPC key namespace, so different jails may have their own objects using the same key value. The parent jail (or base system) can see the jail's IPC objects, but not its keys. PR: 48471 Submitted by: based on work by kikuchan98@gmail.com MFC after: 5 days Notes: svn path=/head/; revision=298585
* Indentation issues.Pedro F. Giffuni2016-04-201-2/+1
| | | | | | | | | Contract some lines leftover from r298310. Mea culpa. Notes: svn path=/head/; revision=298354
* kernel: use our nitems() macro when it is available through param.h.Pedro F. Giffuni2016-04-191-1/+1
| | | | | | | | | No functional change, only trivial cases are done in this sweep, Discussed in: freebsd-current Notes: svn path=/head/; revision=298310
* Add kern.racct.enable tunable and RACCT_DISABLED config option.Edward Tomasz Napierala2015-04-291-19/+23
| | | | | | | | | | | | | | The point of this is to be able to add RACCT (with RACCT_DISABLED) to GENERIC, to avoid having to rebuild the kernel to use rctl(8). Differential Revision: https://reviews.freebsd.org/D2369 Reviewed by: kib@ MFC after: 1 month Relnotes: yes Sponsored by: The FreeBSD Foundation Notes: svn path=/head/; revision=282213
* Avoid dynamic syscall overhead for statically compiled modules.Mateusz Guzik2014-10-261-2/+2
| | | | | | | | | | | | | | | | The kernel tracks syscall users so that modules can safely unregister them. But if the module is not unloadable or was compiled into the kernel, there is no need to do this. Achieve this by adding SY_THR_STATIC_KLD macro which expands to SY_THR_STATIC during kernel build and 0 otherwise. Reviewed by: kib (previous version) MFC after: 2 weeks Notes: svn path=/head/; revision=273707
* Pull in r267961 and r267973 again. Fix for issues reported will follow.Hans Petter Selasky2014-06-281-6/+0
| | | | Notes: svn path=/head/; revision=267992
* Revert r267961, r267973:Glen Barber2014-06-271-0/+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/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* In order to maximize the re-usability of kernel code in user space thisKip Macy2011-09-161-10/+12
| | | | | | | | | | | | | | | | patch modifies makesyscalls.sh to prefix all of the non-compatibility calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel entry points and all places in the code that use them. It also fixes an additional name space collision between the kernel function psignal and the libc function of the same name by renaming the kernel psignal kern_psignal(). By introducing this change now we will ease future MFCs that change syscalls. Reviewed by: rwatson Approved by: re (bz) Notes: svn path=/head/; revision=225617
* All the racct_*() calls need to happen with the proc locked. Fixing thisEdward Tomasz Napierala2011-07-061-0/+8
| | | | | | | | | won't happen before 9.0. This commit adds "#ifdef RACCT" around all the "PROC_LOCK(p); racct_whatever(p, ...); PROC_UNLOCK(p)" instances, in order to avoid useless locking/unlocking in kernels built without "options RACCT". Notes: svn path=/head/; revision=223825
* Style fix.Edward Tomasz Napierala2011-04-061-2/+1
| | | | | | | Submitted by: jhb@ Notes: svn path=/head/; revision=220399
* Add accounting for SysV-related resources.Edward Tomasz Napierala2011-04-061-8/+45
| | | | | | | | Sponsored by: The FreeBSD Foundation Reviewed by: kib (earlier version) Notes: svn path=/head/; revision=220398
* Add ucred pointer to the SysV-related memory structures. This is requiredEdward Tomasz Napierala2011-04-061-0/+5
| | | | | | | | | | | | | for racct. Note that after this commit, ipcs(1) needs to be rebuilt. Otherwise, it will fail with "ipcs: sysctlbyname: kern.ipc.msqids: Cannot allocate memory". Sponsored by: The FreeBSD Foundation Reviewed by: kib (earlier version) Notes: svn path=/head/; revision=220388
* Add some FEATURE macros for various features (AUDIT/CAM/IPC/KTR/MAC/NFS/NTP/Alexander Leidinger2011-02-251-0/+2
| | | | | | | | | | | | | | | | PMC/SYSV/...). No FreeBSD version bump, the userland application to query the features will be committed last and can serve as an indication of the availablility if needed. Sponsored by: Google Summer of Code 2010 Submitted by: kibab Reviewed by: arch@ (parts by rwatson, trasz, jhb) X-MFC after: to be determined in last commit with code from this project Notes: svn path=/head/; revision=219028
* Specify a CTLTYPE_FOO so that a future sysctl(8) change does not needMatthew D Fleming2011-01-181-1/+1
| | | | | | | to rely on the format string. Notes: svn path=/head/; revision=217555
* Remove useless NULL checks for M_WAITOK mallocs.Edward Tomasz Napierala2010-12-021-17/+0
| | | | Notes: svn path=/head/; revision=216104
* Move SysV IPC freebsd32 compat shims from freebsd32_misc.c to correspondingKonstantin Belousov2010-03-191-11/+209
| | | | | | | | | | | | | | | | | sysv_{msg,sem,shm}.c files. Mark SysV IPC freebsd32 syscalls as NOSTD and add required SYSCALL_INIT_HELPER/SYSCALL32_INIT_HELPERs to provide auto register/unregister on module load. This makes COMPAT_FREEBSD32 functional with SysV IPC compiled and loaded as modules. Reviewed by: jhb MFC after: 2 weeks Notes: svn path=/head/; revision=205323
* Change the ABI of some of the structures used by the SYSV IPC API:John Baldwin2009-06-241-1/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - The uid/cuid members of struct ipc_perm are now uid_t instead of unsigned short. - The gid/cgid members of struct ipc_perm are now gid_t instead of unsigned short. - The mode member of struct ipc_perm is now mode_t instead of unsigned short (this is merely a style bug). - The rather dubious padding fields for ABI compat with SV/I386 have been removed from struct msqid_ds and struct semid_ds. - The shm_segsz member of struct shmid_ds is now a size_t instead of an int. This removes the need for the shm_bsegsz member in struct shmid_kernel and should allow for complete support of SYSV SHM regions >= 2GB. - The shm_nattch member of struct shmid_ds is now an int instead of a short. - The shm_internal member of struct shmid_ds is now gone. The internal VM object pointer for SHM regions has been moved into struct shmid_kernel. - The existing __semctl(), msgctl(), and shmctl() system call entries are now marked COMPAT7 and new versions of those system calls which support the new ABI are now present. - The new system calls are assigned to the FBSD-1.1 version in libc. The FBSD-1.0 symbols in libc now refer to the old COMPAT7 system calls. - A simplistic framework for tagging system calls with compatibility symbol versions has been added to libc. Version tags are added to system calls by adding an appropriate __sym_compat() entry to src/lib/libc/incldue/compat.h. [1] PR: kern/16195 kern/113218 bin/129855 Reviewed by: arch@, rwatson Discussed with: kan, kib [1] Notes: svn path=/head/; revision=194910
* Deprecate the msgsys(), semsys(), and shmsys() system calls by movingJohn Baldwin2009-06-241-34/+40
| | | | | | | | | | | | them under COMPAT_FREEBSD[4567]. Starting with FreeBSD 5.0 the SYSV IPC API was implemented via direct system calls (e.g. msgctl(), msgget(), etc.) rather than indirecting through the var-args *sys() system calls. The shmsys() system call was already effectively deprecated for all but COMPAT_FREEBSD4 already as its implementation for the !COMPAT_FREEBSD4 case was to simply invoke nosys(). Notes: svn path=/head/; revision=194894
* - Move syscall function argument structure types to be just above theJohn Baldwin2009-06-241-2/+1
| | | | | | | | relevenat system call function. - Whitespace fixes. Notes: svn path=/head/; revision=194832
* In non-debugging mode make this define (void)0 instead of nothing. ThisRoman Divacky2009-06-211-1/+1
| | | | | | | | | | | | | helps to catch bugs like the below with clang. if (cond); <--- note the trailing ; something(); Approved by: ed (mentor) Discussed on: current@ Notes: svn path=/head/; revision=194575
* Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERICRobert Watson2009-06-051-1/+0
| | | | | | | | | | | and used in a large number of files, but also because an increasing number of incorrect uses of MAC calls were sneaking in due to copy-and-paste of MAC-aware code without the associated opt_mac.h include. Discussed with: pjd Notes: svn path=/head/; revision=193511
* Add hierarchical jails. A jail may further virtualize its environmentJamie Gritton2009-05-271-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | by creating a child jail, which is visible to that jail and to any parent jails. Child jails may be restricted more than their parents, but never less. Jail names reflect this hierarchy, being MIB-style dot-separated strings. Every thread now points to a jail, the default being prison0, which contains information about the physical system. Prison0's root directory is the same as rootvnode; its hostname is the same as the global hostname, and its securelevel replaces the global securelevel. Note that the variable "securelevel" has actually gone away, which should not cause any problems for code that properly uses securelevel_gt() and securelevel_ge(). Some jail-related permissions that were kept in global variables and set via sysctls are now per-jail settings. The sysctls still exist for backward compatibility, used only by the now-deprecated jail(2) system call. Approved by: bz (mentor) Notes: svn path=/head/; revision=192895
* Merge first in a series of TrustedBSD MAC Framework KPI changesRobert Watson2007-10-241-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | from Mac OS X Leopard--rationalize naming for entry points to the following general forms: mac_<object>_<method/action> mac_<object>_check_<method/action> The previous naming scheme was inconsistent and mostly reversed from the new scheme. Also, make object types more consistent and remove spaces from object types that contain multiple parts ("posix_sem" -> "posixsem") to make mechanical parsing easier. Introduce a new "netinet" object type for certain IPv4/IPv6-related methods. Also simplify, slightly, some entry point names. All MAC policy modules will need to be recompiled, and modules not updates as part of this commit will need to be modified to conform to the new KPI. Sponsored by: SPARTA (original patches against Mac OS X) Obtained from: TrustedBSD Project, Apple Computer Notes: svn path=/head/; revision=172930
* Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); inRobert Watson2007-06-121-2/+1
| | | | | | | | | | | | | | | | | | some cases, move to priv_check() if it was an operation on a thread and no other flags were present. Eliminate caller-side jail exception checking (also now-unused); jail privilege exception code now goes solely in kern_jail.c. We can't yet eliminate suser() due to some cases in the KAME code where a privilege check is performed and then used in many different deferred paths. Do, however, move those prototypes to priv.h. Reviewed by: csjp Obtained from: TrustedBSD Project Notes: svn path=/head/; revision=170587
* Further system call comment cleanup:Robert Watson2007-03-051-4/+0
| | | | | | | | | | | | | - Remove also "MP SAFE" after prior "MPSAFE" pass. (suggested by bde) - Remove extra blank lines in some cases. - Add extra blank lines in some cases. - Remove no-op comments consisting solely of the function name, the word "syscall", or the system call name. - Add punctuation. - Re-wrap some comments. Notes: svn path=/head/; revision=167232
* Remove 'MPSAFE' annotations from the comments above most system calls: allRobert Watson2007-03-041-15/+1
| | | | | | | | | | | system calls now enter without Giant held, and then in some cases, acquire Giant explicitly. Remove a number of other MPSAFE annotations in the credential code and tweak one or two other adjacent comments. Notes: svn path=/head/; revision=167211
* Do allow privilege to create over-sized messages on System V IPCRobert Watson2007-02-191-1/+2
| | | | | | | message queues in jail. Notes: svn path=/head/; revision=166829
* MFP4: (part of) 110058Jung-uk Kim2006-12-201-85/+88
| | | | | | | | | | | | copyin()/copyout() for message type is separated from msgsnd()/msgrcv() and it is done from its wrapper functions to support 32-bit emulations. After I implemented this, I have briefly referenced NetBSD and Darwin. NetBSD passes copyin()/copyout() function pointers from wrappers. Darwin passes size of message type as an argument, which is actually similar to my first implementation (P4 109706). We may revisit these implementations later. Notes: svn path=/head/; revision=165403
* Fix msgsnd(3)/msgrcv(3) deadlock under heavy resource pressure by timing outJung-uk Kim2006-11-171-5/+9
| | | | | | | | | | msgsnd and rechecking resources. This problem was found while I was running Linux Test Project test suite (test cases: msgctl08, msgctl09). Change `msgwait' to `msgsnd' and `msgrcv' to distinguish its sleeping conditions. Few cosmetic changes to debugging messages. Notes: svn path=/head/; revision=164368
* Sweep kernel replacing suser(9) calls with priv(9) calls, assigningRobert Watson2006-11-061-1/+2
| | | | | | | | | | | | | | | | specific privilege names to a broad range of privileges. These may require some future tweaking. Sponsored by: nCircle Network Security, Inc. Obtained from: TrustedBSD Project Discussed on: arch@ Reviewed (at least in part) by: mlaier, jmg, pjd, bde, ceri, Alex Lyashkov <umka at sevcity dot net>, Skip Ford <skip dot ford at verizon dot net>, Antoine Brodin <antoine dot brodin at laposte dot net> Notes: svn path=/head/; revision=164033
* Complete break-out of sys/sys/mac.h into sys/security/mac/mac_framework.hRobert Watson2006-10-221-1/+2
| | | | | | | | | | | | | | | | begun with a repo-copy of mac.h to mac_framework.h. sys/mac.h now contains the userspace and user<->kernel API and definitions, with all in-kernel interfaces moved to mac_framework.h, which is now included across most of the kernel instead. This change is the first step in a larger cleanup and sweep of MAC Framework interfaces in the kernel, and will not be MFC'd. Obtained from: TrustedBSD Project Sponsored by: SPARTA Notes: svn path=/head/; revision=163606
* Remove MAC_DEBUG + MPRINTF debugging from System V IPC. This no longerRobert Watson2006-09-201-32/+7
| | | | | | | | | | | | appears to be serving a useful purpose, as it was used during initial development of MAC support for System V IPC. MFC after: 1 month Obtained from: TrustedBSD Project Suggested by: Christopher dot Vance at SPARTA dot com Notes: svn path=/head/; revision=162468
* Move some functions and definitions from uipc_socket2.c to uipc_socket.c:Robert Watson2006-06-101-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | - Move sonewconn(), which creates new sockets for incoming connections on listen sockets, so that all socket allocate code is together in uipc_socket.c. - Move 'maxsockets' and associated sysctls to uipc_socket.c with the socket allocation code. - Move kern.ipc sysctl node to uipc_socket.c, add a SYSCTL_DECL() for it to sysctl.h and remove lots of scattered implementations in various IPC modules. - Sort sodealloc() after soalloc() in uipc_socket.c for dependency order reasons. Statisticize soalloc() and sodealloc() as they are now required only in uipc_socket.c, and are internal to the socket implementation. After this change, socket allocation and deallocation is entirely centralized in one file, and uipc_socket2.c consists entirely of socket buffer manipulation and default protocol switch functions. MFC after: 1 month Notes: svn path=/head/; revision=159481
* Add much needed descriptions for a number of the IPC related sysctl OIDs.Christian S.J. Peron2005-02-121-6/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This information will be very useful for people who are tuning applications which have a dependence on IPC mechanisms. The following OIDs were documented: Message queues: kern.ipc.msgmax kern.ipc.msgmni kern.ipc.msgmnb kern.ipc.msgtlq kern.ipc.msgssz kern.ipc.msgseg Semaphores: kern.ipc.semmap kern.ipc.semmni kern.ipc.semmns kern.ipc.semmnu kern.ipc.semmsl kern.ipc.semopm kern.ipc.semume kern.ipc.semusz kern.ipc.semvmx kern.ipc.semaem Shared memory: kern.ipc.shmmax kern.ipc.shmmin kern.ipc.shmmni kern.ipc.shmseg kern.ipc.shmall kern.ipc.shm_use_phys kern.ipc.shm_allow_removed kern.ipc.shmsegs These new descriptions can be viewed using sysctl -d PR: kern/65219 Submitted by: Dan Nelson <dnelson at allantgroup dot com> (modified) No objections: developers@ Descriptions reviewed by: gnn MFC after: 1 week Notes: svn path=/head/; revision=141710
* - Tweak kern_msgctl() to return a copy of the requested message queue idJohn Baldwin2005-02-071-7/+5
| | | | | | | | | | | | | | | | | | | | structure in the struct pointed to by the 3rd argument for IPC_STAT and get rid of the 4th argument. The old way returned a pointer into the kernel array that the calling function would then access afterwards without holding the appropriate locks and doing non-lock-safe things like copyout() with the data anyways. This change removes that unsafeness and resulting race conditions as well as simplifying the interface. - Implement kern_foo wrappers for stat(), lstat(), fstat(), statfs(), fstatfs(), and fhstatfs(). Use these wrappers to cut out a lot of code duplication for freebsd4 and netbsd compatability system calls. - Add a new lookup function kern_alternate_path() that looks up a filename under an alternate prefix and determines which filename should be used. This is basically a more general version of linux_emul_convpath() that can be shared by all the ABIs thus allowing for further reduction of code duplication. Notes: svn path=/head/; revision=141471
* Split out kernel side of msgctl(2) into two parts: the first that pops dataMaxim Sobolev2005-01-261-21/+37
| | | | | | | | | | | from the userland and pushes results back and the second which does actual processing. Use the latter to eliminate stackgap in the linux wrapper of that syscall. MFC after: 2 weeks Notes: svn path=/head/; revision=140839
* Invoke label initialization, creation, cleanup, and tear-down MACRobert Watson2005-01-221-0/+162
| | | | | | | | | | | Framework entry points for System V IPC message queues. Submitted by: Dandekar Hrishikesh <rishi_dandekar at sbcglobal dot net> Obtained from: TrustedBSD Project Sponsored by: DARPA, SPAWAR, McAfee Research Notes: svn path=/head/; revision=140614
* /* -> /*- for copyright notices, minor format tweaks as necessaryWarner Losh2005-01-061-1/+1
| | | | Notes: svn path=/head/; revision=139804
* Make the sysctls kern.ipc.msgmnb and kern.ipc.msgtql into tunables asRobert Watson2004-12-301-2/+4
| | | | | | | | | | | | is the case for most other sysctls in the System V IPC message queue implementation. PR: 75541 Submitted by: Sergiy Vyshnevetskiy <serg at vostok dot net> MFC after: 2 weeks Notes: svn path=/head/; revision=139436
* Second of several commits to allow kernel System V IPC data structuresRobert Watson2004-11-121-134/+126
| | | | | | | | | | | | | | | | | | | to be modified and extended without breaking the user space ABI: Use _kernel variants on _ds structures for System V sempahores, message queues, and shared memory. When interfacing with userspace, export only the _ds subsets of the _kernel data structures. A lot of search and replace. Define the message structure in the _KERNEL portion of msg.h so that it can be used by other kernel consumers, but not exposed to user space. Submitted by: Dandekar Hrishikesh <rishi_dandekar at sbcglobal dot net> Obtained from: TrustedBSD Project Sponsored by: DARPA, SPAWAR, McAfee Research Notes: svn path=/head/; revision=137613
* Add missing #include <sys/module.h>Poul-Henning Kamp2004-05-301-0/+1
| | | | Notes: svn path=/head/; revision=129882
* Slight whitespace consistency improvement:Robert Watson2003-11-071-1/+1
| | | | | | | | Trim trailing whitespace. Remove unmatched " " before ")". Notes: svn path=/head/; revision=122201
* Change all SYSCTLS which are readonly and have a related TUNABLEMike Silbersack2003-10-211-3/+3
| | | | | | | | from CTLFLAG_RD to CTLFLAG_RDTUN so that sysctl(8) can provide more useful error messages. Notes: svn path=/head/; revision=121307
* Update some argument-documenting comments to match reality.Jacques Vidrine2003-08-071-2/+3
| | | | | | | | Add an explicit range check to those same arguments to reduce risk of cardiac arrest in future code readers. Notes: svn path=/head/; revision=118615
* Use __FBSDID().David E. O'Brien2003-06-111-2/+3
| | | | Notes: svn path=/head/; revision=116182
* Back out M_* changes, per decision of the TRB.Warner Losh2003-02-191-4/+4
| | | | | | | Approved by: trb Notes: svn path=/head/; revision=111119
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