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* In order to maximize the re-usability of kernel code in user space thiskmacy2011-09-161-8/+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)
* Set various POSIX capability sysctls to the version of the API that isjhb2010-11-191-1/+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
* - kern_sched_rr_get_interval should return interval for thread 1 indavidxu2010-09-291-11/+5
| | | | | | | target process. - eliminate a goto. MFC after: 1 week
* Remove kernel support for M:N threading.jeff2008-03-121-2/+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.
* generally we are interested in what thread did something asjulian2007-11-141-1/+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.
* - Restore historical sched_yield() behavior by changing sched_relinquish()jeff2007-10-081-1/+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
* Further system call comment cleanup:rwatson2007-03-051-3/+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.
* Remove 'MPSAFE' annotations from the comments above most system calls: allrwatson2007-03-041-24/+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.
* Update #includes list.trhodes2006-11-111-2/+1
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* Sweep kernel replacing suser(9) calls with priv(9) calls, assigningrwatson2006-11-061-3/+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>
* Backout the feature which can change thread's scheduling option, I reallydavidxu2006-07-131-42/+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.
* Oops, remove debugger line.davidxu2006-07-111-2/+0
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* Extended the POSIX scheduler APIs to accept lwpid as well, we've alreadydavidxu2006-07-111-36/+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.
* Don't allow non-root user to set a scheduler policy, otherwise this coulddavidxu2006-05-211-0/+4
| | | | | | be a local DOS. Submitted by: Diane Bruce at db at db.net
* Style fixes.davidxu2006-05-191-20/+27
| | | | Submitted by: Diane Bruce < db at db dot net >
* Use proc lock to prevent a thread from exiting, Giant was no longer used todavidxu2006-04-101-26/+9
| | | | protect thread list.
* Actually commit the code for kern_sched_get_rr_interval().jhb2005-03-311-13/+20
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* /* -> /*- for license, minor formatting changesimp2005-01-071-1/+1
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* Use __FBSDID().obrien2003-06-111-2/+3
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* Use copyout to access user memory.alfred2003-01-071-1/+5
| | | | | Submittted by: pho MFC After: 2 days
* headers should not really include "opt_foo.h" (in this case opt_posix.h).alfred2002-11-151-0/+2
| | | | remove it from the header and add it to the files that require it.
* Change p_can{debug,see,sched,signal}()'s first argument to be a threadjhb2002-05-191-5/+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.
* Pre-KSE/M3 commit.julian2002-02-071-5/+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,
* KSE Milestone 2julian2001-09-121-30/+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
* Make various posix4 system calls MPSAFE (will fixup syscalls.master later)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()
* o Replace calls to p_can(..., P_CAN_xxx) with calls to p_canxxx().rwatson2001-07-051-5/+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
* o Unfold p31b_proc() into the individual posix4 system calls so as torwatson2001-06-301-66/+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
* Replace some use of 'p' with 'targetp' so as to not scarily overload therwatson2001-06-301-11/+17
| | | | | | passed 'p' argument. No functional change. Obtained from: USENIX Emporium, Cheap Tricks Department
* Remove a fascinating but confusing construct involving chainingrwatson2001-06-281-33/+31
| | | | | | | | conditional clauses in the following way: (0 || a || b); No functional change.
* Add error checking for copyin() operations in posix4 scheduling code.rwatson2001-06-281-2/+6
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* o Merge contents of struct pcred into struct ucred. Specifically, add therwatson2001-05-251-9/+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
* o First step in cleaning up authorization code for the posix4rwatson2001-05-061-8/+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
* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inmarkm2001-05-011-3/+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)
* Change the pfind() and zpfind() functions to lock the process that theyjhb2001-04-241-2/+4
| | | | | | find before releasing the allproc lock and returning. Reviewed by: -smp, dfr, jake
* Add $FreeBSD$peter2000-05-011-0/+1
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* Well folks, this is it - The second stage of the removal for build supportpeter1999-04-171-1/+1
| | | | for LKM's..
* Set PAGE_SIZE for _SC_PAGESIZE sysconf().dufault1998-06-011-0/+1
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* 1. Add new defs for mins and maxs for the POSIX flavor priorities. Theydufault1998-05-191-3/+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.
* 1. Don't use "nosys" and generate coredumps for unconfigureddufault1998-05-181-1/+9
| | | | | | system calls - return ENOSYS per the spec. 2. Fix interface stub to set priority properly.
* Finish _POSIX_PRIORITY_SCHEDULING. Needs P1003_1B anddufault1998-03-281-0/+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.
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