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* sched_setscheduler(2): Change realtime privilege checkFlorian Walpen2024-02-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | Check for privilege PRIV_SCHED_SETPOLICY instead of PRIV_SCHED_SET, to at least make it coherent with what is done at thread creation when a realtime policy is requested, and have users authorized by mac_priority(4) pass it. This change is good enough in practice since it only allows 'root' (as before) and mac_priority(4)'s authorized users in (the point of this change), without other side effects. More changes in this area, to generally ensure that all privilege checks are consistent, are going to come as olce's priority revamp project lands. (olce: Expanded the explanations.) PR: 276962 Reported by: jbeich Reviewed by: olce Approved by: emaste (mentor) MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D43835 (cherry picked from commit 2198221bd9df0ceb69945120bc477309a5729241) Approved by: emaste (mentor) Approved by: re (cperciva)
* sys: Remove $FreeBSD$: one-line .c patternWarner Losh2023-08-231-2/+0
| | | | | | | Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/ Similar commit in current: (cherry picked from commit 685dc743dc3b)
* sysent: Get rid of bogus sys/sysent.h include.Dmitry Chagin2022-06-171-1/+0
| | | | | | | | Where appropriate hide sysent.h under proper condition. MFC after: 2 weeks (cherry picked from commit 31d1b816fe139f46083f8609c34b7d129a6e2ee0)
* spdx: initial adoption of licensing ID tags.Pedro F. Giffuni2017-11-181-0/+2
| | | | | | | | | | | | | | | | | | | | 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. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point. Initially, only tag files that use BSD 4-Clause "Original" license. RelNotes: yes Differential Revision: https://reviews.freebsd.org/D13133 Notes: svn path=/head/; revision=325966
* Use passed thread pointer instead of curthread in sys_sched_yieldMateusz Guzik2017-11-121-2/+2
| | | | | | | No functional changes. Notes: svn path=/head/; revision=325733
* In preparation for switching linuxulator to the use the native 1:1Dmitry Chagin2015-05-241-24/+78
| | | | | | | | | | | | | threads split sys_sched_getparam(), sys_sched_setparam(), sys_sched_getscheduler(), sys_sched_setscheduler() to their kern_* counterparts and add targettd parameter to allow specify the target thread directly by callee. Differential Revision: https://reviews.freebsd.org/D1034 Reviewed by: trasz Notes: svn path=/head/; revision=283377
* In preparation for switching linuxulator to the use the native 1:1Dmitry Chagin2015-05-241-3/+16
| | | | | | | | | | | | | | | | threads refactor kern_sched_rr_get_interval() and sys_sched_rr_get_interval(). Add a kern_sched_rr_get_interval() counterpart which takes a targettd parameter to allow specify target thread directly by callee (new Linuxulator). Linuxulator temporarily uses first thread in proc. Move linux_sched_rr_get_interval() to the MI part. Differential Revision: https://reviews.freebsd.org/D1032 Reviewed by: trasz Notes: svn path=/head/; revision=283374
* In order to maximize the re-usability of kernel code in user space thisKip Macy2011-09-161-8/+8
| | | | | | | | | | | | | | | | 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
* Set various POSIX capability sysctls to the version of the API that isJohn Baldwin2010-11-191-1/+1
| | | | | | | | | | supported rather than 1. They are supposed to return a suitable value for sysconf(3). While here, make the fsync sysctl match <unistd.h>. MFC after: 1 week Notes: svn path=/head/; revision=215540
* - kern_sched_rr_get_interval should return interval for thread 1 inDavid Xu2010-09-291-11/+5
| | | | | | | | | | target process. - eliminate a goto. MFC after: 1 week Notes: svn path=/head/; revision=213258
* Remove kernel support for M:N threading.Jeff Roberson2008-03-121-2/+2
| | | | | | | | | | | While the KSE project was quite successful in bringing threading to FreeBSD, the M:N approach taken by the kse library was never developed to its full potential. Backwards compatibility will be provided via libmap.conf for dynamically linked binaries and static binaries will be broken. Notes: svn path=/head/; revision=177091
* generally we are interested in what thread did something asJulian Elischer2007-11-141-1/+1
| | | | | | | | | opposed to what process. Since threads by default have teh name of the process unless over-written with more useful information, just print the thread name instead. Notes: svn path=/head/; revision=173600
* - Restore historical sched_yield() behavior by changing sched_relinquish()Jeff Roberson2007-10-081-1/+2
| | | | | | | | | | | | to simply switch rather than lowering priority and switching. This allows threads of equal priority to run but not lesser priority. Discussed with: davidxu Reported by: NIIMI Satoshi <sa2c@sa2c.net> Approved by: re Notes: svn path=/head/; revision=172483
* Further system call comment cleanup:Robert Watson2007-03-051-3/+3
| | | | | | | | | | | | | - 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 Watson2007-03-041-24/+0
| | | | | | | | | | | 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
* Update #includes list.Tom Rhodes2006-11-111-2/+1
| | | | Notes: svn path=/head/; revision=164183
* Sweep kernel replacing suser(9) calls with priv(9) calls, assigningRobert Watson2006-11-061-3/+5
| | | | | | | | | | | | | | | | 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
* Backout the feature which can change thread's scheduling option, I reallyDavid Xu2006-07-131-42/+4
| | | | | | | | | don't want to mix process and thread scheduling options together in these functions, now the thread scheduling option is implemented in new thr syscalls. Notes: svn path=/head/; revision=160322
* Oops, remove debugger line.David Xu2006-07-111-2/+0
| | | | Notes: svn path=/head/; revision=160258
* Extended the POSIX scheduler APIs to accept lwpid as well, we've alreadyDavid Xu2006-07-111-36/+69
| | | | | | | | | done this in ptrace syscall, when a pid is large than PID_MAX, the syscall will search a thread in current process. It permits 1:1 thread library to get and set a thread's scheduler attributes. Notes: svn path=/head/; revision=160257
* Don't allow non-root user to set a scheduler policy, otherwise this couldDavid Xu2006-05-211-0/+4
| | | | | | | | | be a local DOS. Submitted by: Diane Bruce at db at db.net Notes: svn path=/head/; revision=158778
* Style fixes.David Xu2006-05-191-20/+27
| | | | | | | Submitted by: Diane Bruce < db at db dot net > Notes: svn path=/head/; revision=158745
* Use proc lock to prevent a thread from exiting, Giant was no longer used toDavid Xu2006-04-101-26/+9
| | | | | | | protect thread list. Notes: svn path=/head/; revision=157623
* Actually commit the code for kern_sched_get_rr_interval().John Baldwin2005-03-311-13/+20
| | | | Notes: svn path=/head/; revision=144447
* /* -> /*- for license, minor formatting changesWarner Losh2005-01-071-1/+1
| | | | Notes: svn path=/head/; revision=139825
* Use __FBSDID().David E. O'Brien2003-06-111-2/+3
| | | | Notes: svn path=/head/; revision=116192
* Use copyout to access user memory.Alfred Perlstein2003-01-071-1/+5
| | | | | | | | Submittted by: pho MFC After: 2 days Notes: svn path=/head/; revision=108896
* headers should not really include "opt_foo.h" (in this case opt_posix.h).Alfred Perlstein2002-11-151-0/+2
| | | | | | | remove it from the header and add it to the files that require it. Notes: svn path=/head/; revision=106969
* Change p_can{debug,see,sched,signal}()'s first argument to be a threadJohn Baldwin2002-05-191-5/+5
| | | | | | | | | | pointer instead of a proc pointer and require the process pointed to by the second argument to be locked. We now use the thread ucred reference for the credential checks in p_can*() as a result. p_canfoo() should now no longer need Giant. Notes: svn path=/head/; revision=96886
* Pre-KSE/M3 commit.Julian Elischer2002-02-071-5/+5
| | | | | | | | | | | | | this is a low-functionality change that changes the kernel to access the main thread of a process via the linked list of threads rather than assuming that it is embedded in the process. It IS still embeded there but remove all teh code that assumes that in preparation for the next commit which will actually move it out. Reviewed by: peter@freebsd.org, gallatin@cs.duke.edu, benno rice, Notes: svn path=/head/; revision=90361
* KSE Milestone 2Julian Elischer2001-09-121-30/+51
| | | | | | | | | | | | | | | | | Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha Notes: svn path=/head/; revision=83366
* Make various posix4 system calls MPSAFE (will fixup syscalls.master later)Matthew Dillon2001-08-311-42/+95
| | | | | | | | | | | | | | sched_setparam() sched_getparam() sched_setscheduler() sched_getscheduler() sched_yield() sched_get_priority_max() sched_get_priority_min() sched_rr_get_interval() Notes: svn path=/head/; revision=82701
* o Replace calls to p_can(..., P_CAN_xxx) with calls to p_canxxx().Robert Watson2001-07-051-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | The p_can(...) construct was a premature (and, it turns out, awkward) abstraction. The individual calls to p_canxxx() better reflect differences between the inter-process authorization checks, such as differing checks based on the type of signal. This has a side effect of improving code readability. o Replace direct credential authorization checks in ktrace() with invocation of p_candebug(), while maintaining the special case check of KTR_ROOT. This allows ktrace() to "play more nicely" with new mandatory access control schemes, as well as making its authorization checks consistent with other "debugging class" checks. o Eliminate "privused" construct for p_can*() calls which allowed the caller to determine if privilege was required for successful evaluation of the access control check. This primitive is currently unused, and as such, serves only to complicate the API. Approved by: ({procfs,linprocfs} changes) des Obtained from: TrustedBSD Project Notes: svn path=/head/; revision=79335
* o Unfold p31b_proc() into the individual posix4 system calls so as toRobert Watson2001-06-301-66/+60
| | | | | | | | | | | | allow call-specific authorization. o Modify the authorization model so that p_can() is used to check scheduling get/set events, using P_CAN_SEE for gets, and P_CAN_SCHED for sets. This brings the checks in line with get/setpriority(). Obtained from: TrustedBSD Project Notes: svn path=/head/; revision=79020
* Replace some use of 'p' with 'targetp' so as to not scarily overload theRobert Watson2001-06-301-11/+17
| | | | | | | | | passed 'p' argument. No functional change. Obtained from: USENIX Emporium, Cheap Tricks Department Notes: svn path=/head/; revision=79004
* Remove a fascinating but confusing construct involving chainingRobert Watson2001-06-281-33/+31
| | | | | | | | | | | conditional clauses in the following way: (0 || a || b); No functional change. Notes: svn path=/head/; revision=78944
* Add error checking for copyin() operations in posix4 scheduling code.Robert Watson2001-06-281-2/+6
| | | | Notes: svn path=/head/; revision=78943
* o Merge contents of struct pcred into struct ucred. Specifically, add theRobert Watson2001-05-251-9/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | real uid, saved uid, real gid, and saved gid to ucred, as well as the pcred->pc_uidinfo, which was associated with the real uid, only rename it to cr_ruidinfo so as not to conflict with cr_uidinfo, which corresponds to the effective uid. o Remove p_cred from struct proc; add p_ucred to struct proc, replacing original macro that pointed. p->p_ucred to p->p_cred->pc_ucred. o Universally update code so that it makes use of ucred instead of pcred, p->p_ucred instead of p->p_pcred, cr_ruidinfo instead of p_uidinfo, cr_{r,sv}{u,g}id instead of p_*, etc. o Remove pcred0 and its initialization from init_main.c; initialize cr_ruidinfo there. o Restruction many credential modification chunks to always crdup while we figure out locking and optimizations; generally speaking, this means moving to a structure like this: newcred = crdup(oldcred); ... p->p_ucred = newcred; crfree(oldcred); It's not race-free, but better than nothing. There are also races in sys_process.c, all inter-process authorization, fork, exec, and exit. o Remove sigio->sio_ruid since sigio->sio_ucred now contains the ruid; remove comments indicating that the old arrangement was a problem. o Restructure exec1() a little to use newcred/oldcred arrangement, and use improved uid management primitives. o Clean up exit1() so as to do less work in credential cleanup due to pcred removal. o Clean up fork1() so as to do less work in credential cleanup and allocation. o Clean up ktrcanset() to take into account changes, and move to using suser_xxx() instead of performing a direct uid==0 comparision. o Improve commenting in various kern_prot.c credential modification calls to better document current behavior. In a couple of places, current behavior is a little questionable and we need to check POSIX.1 to make sure it's "right". More commenting work still remains to be done. o Update credential management calls, such as crfree(), to take into account new ruidinfo reference. o Modify or add the following uid and gid helper routines: change_euid() change_egid() change_ruid() change_rgid() change_svuid() change_svgid() In each case, the call now acts on a credential not a process, and as such no longer requires more complicated process locking/etc. They now assume the caller will do any necessary allocation of an exclusive credential reference. Each is commented to document its reference requirements. o CANSIGIO() is simplified to require only credentials, not processes and pcreds. o Remove lots of (p_pcred==NULL) checks. o Add an XXX to authorization code in nfs_lock.c, since it's questionable, and needs to be considered carefully. o Simplify posix4 authorization code to require only credentials, not processes and pcreds. Note that this authorization, as well as CANSIGIO(), needs to be updated to use the p_cansignal() and p_cansched() centralized authorization routines, as they currently do not take into account some desirable restrictions that are handled by the centralized routines, as well as being inconsistent with other similar authorization instances. o Update libkvm to take these changes into account. Obtained from: TrustedBSD Project Reviewed by: green, bde, jhb, freebsd-arch, freebsd-audit Notes: svn path=/head/; revision=77183
* o First step in cleaning up authorization code for the posix4Robert Watson2001-05-061-8/+8
| | | | | | | | | | | | implementation. Move from direct uid 0 comparision to using suser_xxx() call with the same semantics. Simplify CAN_AFFECT() macro as passed pcred was redundant. The checks here still aren't "right", but they are probably "better". Obtained from: TrustedBSD Project Notes: svn path=/head/; revision=76316
* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inMark Murray2001-05-011-3/+5
| | | | | | | | | | | | | | other "system" header files. Also help the deprecation of lockmgr.h by making it a sub-include of sys/lock.h and removing sys/lockmgr.h form kernel .c files. Sort sys/*.h includes where possible in affected files. OK'ed by: bde (with reservations) Notes: svn path=/head/; revision=76166
* Change the pfind() and zpfind() functions to lock the process that theyJohn Baldwin2001-04-241-2/+4
| | | | | | | | | find before releasing the allproc lock and returning. Reviewed by: -smp, dfr, jake Notes: svn path=/head/; revision=75893
* Add $FreeBSD$Peter Wemm2000-05-011-0/+1
| | | | Notes: svn path=/head/; revision=59874
* Well folks, this is it - The second stage of the removal for build supportPeter Wemm1999-04-171-1/+1
| | | | | | | for LKM's.. Notes: svn path=/head/; revision=45739
* Set PAGE_SIZE for _SC_PAGESIZE sysconf().Peter Dufault1998-06-011-0/+1
| | | | Notes: svn path=/head/; revision=36578
* 1. Add new defs for mins and maxs for the POSIX flavor priorities. TheyPeter Dufault1998-05-191-3/+15
| | | | | | | | | | | | | | | | end up being the same, but it doesn't look like you're comparing apples and oranges. 2. Use need_resched instead of reset_priority. This isn't right either, since for example you'll round-robin against equal priority FIFO processes when lowering the priority of another process, but this works better and a real fix needs to be in kern_synch and not out here. 3. This is not a device driver: copyin/copyout the structure. Notes: svn path=/head/; revision=36218
* 1. Don't use "nosys" and generate coredumps for unconfiguredPeter Dufault1998-05-181-1/+9
| | | | | | | | | system calls - return ENOSYS per the spec. 2. Fix interface stub to set priority properly. Notes: svn path=/head/; revision=36155
* Finish _POSIX_PRIORITY_SCHEDULING. Needs P1003_1B andPeter Dufault1998-03-281-0/+239
_KPOSIX_PRIORITY_SCHEDULING options to work. Changes: Change all "posix4" to "p1003_1b". Misnamed files are left as "posix4" until I'm told if I can simply delete them and add new ones; Add _POSIX_PRIORITY_SCHEDULING system calls for FreeBSD and Linux; Add man pages for _POSIX_PRIORITY_SCHEDULING system calls; Add options to LINT; Minor fixes to P1003_1B code during testing. Notes: svn path=/head/; revision=34925
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