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* sys: Remove ancient SCCS tags.Warner Losh2023-11-271-2/+0
| | | | | | | | Remove ancient SCCS tags from the tree, automated scripting, with two minor fixup to keep things compiling. All the common forms in the tree were removed with a perl script. Sponsored by: Netflix
* sys: Remove $FreeBSD$: one-line .h patternWarner Losh2023-08-161-1/+0
| | | | Remove /^\s*\*+\s*\$FreeBSD\$.*$\n/
* sysent: Get rid of bogus sys/sysent.h include.Dmitry Chagin2022-05-281-1/+1
| | | | | | Where appropriate hide sysent.h under proper condition. MFC after: 2 weeks
* Create sys/reg.h for the common code previously in machine/reg.hAndrew Turner2021-08-301-2/+0
| | | | | | | | | | Move the common kernel function signatures from machine/reg.h to a new sys/reg.h. This is in preperation for adding PT_GETREGSET to ptrace(2). Reviewed by: imp, markj Sponsored by: DARPA, AFRL (original work) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D19830
* Plug memory disclosures via ptrace(2).Mark Johnston2018-12-031-1/+3
| | | | | | | | | | | | | | | | On some architectures, the structures returned by PT_GET*REGS were not fully populated and could contain uninitialized stack memory. The same issue existed with the register files in procfs. Reported by: Thomas Barabosch, Fraunhofer FKIE Reviewed by: kib MFC after: 3 days Security: kernel stack memory disclosure Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18421 Notes: svn path=/head/; revision=341442
* Move most of the contents of opt_compat.h to opt_global.h.Brooks Davis2018-04-061-2/+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: further adoption of SPDX licensing ID tags.Pedro F. Giffuni2017-11-201-0/+2
| | | | | | | | | | | | | | | | | Mainly focus on files that use BSD 3-Clause license. 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. Notes: svn path=/head/; revision=326023
* Renumber copyright clause 4Warner Losh2017-02-281-1/+1
| | | | | | | | | | | | Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96 Notes: svn path=/head/; revision=314436
* - Consistently use PROC_ASSERT_HELD() to verify that a process' hold countMark Johnston2015-11-081-1/+1
| | | | | | | | | | | | is non-zero. - Include the process address in the PROC_ASSERT_HELD() and PROC_ASSERT_NOT_HELD() assertion messages so that the corresponding process can be found easily when debugging. MFC after: 1 week Notes: svn path=/head/; revision=290530
* Add macro to test the sv_flags of any process. Change some places to testDmitry Chagin2011-01-261-1/+1
| | | | | | | | | | the flags instead of explicit comparing with address of known sysentvec structures. MFC after: 1 month Notes: svn path=/head/; revision=217896
* Provide groundwork for 32-bit binary compatibility on non-x86 platforms,Nathan Whitehorn2010-03-111-4/+3
| | | | | | | | | | | | for upcoming 64-bit PowerPC and MIPS support. This renames the COMPAT_IA32 option to COMPAT_FREEBSD32, removes some IA32-specific code from MI parts of the kernel and enhances the freebsd32 compatibility code to support big-endian platforms. Reviewed by: kib, jhb Notes: svn path=/head/; revision=205014
* Use the p_sysent->sv_flags flag SV_ILP32 to detect 32bit processKonstantin Belousov2009-03-021-3/+3
| | | | | | | | | executing on 64bit kernel. This eliminates the direct comparisions of p_sysent with &ia32_freebsd_sysvec, that were left intact after r185169. Notes: svn path=/head/; revision=189282
* Remove kernel support for M:N threading.Jeff Roberson2008-03-121-1/+0
| | | | | | | | | | | 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
* Don't reset uio_offset to 0 before returning. Instead, refuse to serviceDag-Erling Smørgrav2007-04-151-1/+3
| | | | | | | | | | requests where uio_offset is not 0 to begin with. This fixes a long- standing bug where e.g. 'cat /proc/$$/regs' would loop forever. MFC after: 3 weeks Notes: svn path=/head/; revision=168758
* Jumbo-commit to enhance 32 bit application support on 64 bit kernels.Peter Wemm2005-06-301-3/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is good enough to be able to run a RELENG_4 gdb binary against a RELENG_4 application, along with various other tools (eg: 4.x gcore). We use this at work. ia32_reg.[ch]: handle the 32 bit register file format, used by ptrace, procfs and core dumps. procfs_*regs.c: vary the format of proc/XXX/*regs depending on the client and target application. procfs_map.c: Don't print a 64 bit value to 32 bit consumers, or their sscanf fails. They expect an unsigned long. imgact_elf.c: produce a valid 32 bit coredump for 32 bit apps. sys_process.c: handle 32 bit consumers debugging 32 bit targets. Note that 64 bit consumers can still debug 32 bit targets. IA64 has got stubs for ia32_reg.c. Known limitations: a 5.x/6.x gdb uses get/setcontext(), which isn't implemented in the 32/64 wrapper yet. We also make a tiny patch to gdb pacify it over conflicting formats of ld-elf.so.1. Approved by: re Notes: svn path=/head/; revision=147692
* Don't PHOLD() the target process in procfs, since this is already doneDavid Schultz2004-10-011-2/+1
| | | | | | | | in pseudofs. Moreover, PHOLD() may block between the p_candebug() access check and the actual operation. Notes: svn path=/head/; revision=136004
* Remove advertising clause from University of California Regent'sWarner Losh2004-04-071-4/+0
| | | | | | | | | | license, per letter dated July 22, 1999 and email from Peter Wemm, Alan Cox and Robert Watson. Approved by: core, peter, alc, rwatson Notes: svn path=/head/; revision=128019
* Introduce a uiomove_frombuf helper routine that handles computing andJacques Vidrine2003-10-021-15/+3
| | | | | | | | | | | | | | | | | | validating the offset within a given memory buffer before handing the real work off to uiomove(9). Use uiomove_frombuf in procfs to correct several issues with integer arithmetic that could result in underflows/overflows. As a side-effect, the code is significantly simplified. Add additional sanity checks when computing a memory allocation size in pfs_read. Submitted by: rwatson (original uiomove_frombuf -- bugs are mine :-) Reported by: Joost Pol <joost@pine.nl> (integer underflows/overflows) Notes: svn path=/head/; revision=120665
* Clean up proc locking in procfs: make sure the proc lock is held beforeRobert Watson2003-05-051-1/+4
| | | | | | | | | | | | | | entering sys_process.c debugging primitives, or we violate assertions. Also, be more careful about releasing the process lock around calls to uiomove() which may sleep waiting for paging machinations or related notions. We may want to defer the uiomove() in at least one case, but jhb will look into that at a later date. Reported by: Philippe Charnier <charnier@xp11.frmug.org> Reviewed by: jhb Notes: svn path=/head/; revision=114734
* Part 1 of KSE-IIIJulian Elischer2002-06-291-1/+1
| | | | | | | | | | | | | | | | The ability to schedule multiple threads per process (one one cpu) by making ALL system calls optionally asynchronous. to come: ia64 and power-pc patches, patches for gdb, test program (in tools) Reviewed by: Almost everyone who counts (at various times, peter, jhb, matt, alfred, mini, bernd, and a cast of thousands) NOTE: this is still Beta code, and contains lots of debugging stuff. expect slight instability in signals.. Notes: svn path=/head/; revision=99072
* Change p_can{debug,see,sched,signal}()'s first argument to be a threadJohn Baldwin2002-05-191-1/+1
| | | | | | | | | | 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
* Lock the target process in procfs_doproc*regs() for p_candebug and whileJohn Baldwin2002-04-131-3/+7
| | | | | | | reading/writing the registers. Notes: svn path=/head/; revision=94622
* FIxed the following style bugs:Bruce Evans2002-02-161-3/+9
| | | | | | | | | | - clobbering of jsp's $Id$ by FreeBSD's old $Id$. - lost Berkeley id in procfs_dbregs.c - long lines in recent KSE changes. - various gratuitous differences between procfs_*regs.c. Notes: svn path=/head/; revision=90716
* Fixed missing PHOLD()/PRELE().Bruce Evans2002-02-161-0/+2
| | | | | | | | Obtained from: procfs_dbregs.c Approved by: des Notes: svn path=/head/; revision=90715
* Pre-KSE/M3 commit.Julian Elischer2002-02-071-2/+2
| | | | | | | | | | | | | 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
* Pseudofsize procfs(5).Dag-Erling Smørgrav2001-12-041-19/+4
| | | | Notes: svn path=/head/; revision=87321
* Move procfs_* from procfs_machdep.c into sys_process.c, and rename them toDag-Erling Smørgrav2001-10-211-2/+2
| | | | | | | | | proc_* in the process; procfs_machdep.c is no longer needed. Run-tested on i386, build-tested on Alpha, untested on other platforms. Notes: svn path=/head/; revision=85297
* Dissociate ptrace from procfs.Dag-Erling Smørgrav2001-10-071-0/+1
| | | | | | | | | | | | | | | | | | | | Until now, the ptrace syscall was implemented as a wrapper that called various functions in procfs depending on which ptrace operation was requested. Most of these functions were themselves wrappers around procfs_{read,write}_{,db,fp}regs(), with only some extra error checks, which weren't necessary in the ptrace case anyway. This commit moves procfs_rwmem() from procfs_mem.c into sys_process.c (renaming it to proc_rwmem() in the process), and implements ptrace() directly in terms of procfs_{read,write}_{,db,fp}regs() instead of having it fake up a struct uio and then call procfs_do{,db,fp}regs(). It also moves the prototypes for procfs_{read,write}_{,db,fp}regs() and proc_rwmem() from proc.h to ptrace.h, and marks all procfs files except procfs_machdep.c as "optional procfs" instead of "standard". Notes: svn path=/head/; revision=84637
* KSE Milestone 2Julian Elischer2001-09-121-5/+4
| | | | | | | | | | | | | | | | | 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
* o Replace calls to p_can(..., P_CAN_xxx) with calls to p_canxxx().Robert Watson2001-07-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | 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
* - FDESC, FIFO, NULL, PORTAL, PROC, UMAP and UNION fileRuslan Ermilov2001-05-231-1/+1
| | | | | | | | | | | | | | | | | | systems were repo-copied from sys/miscfs to sys/fs. - Renamed the following file systems and their modules: fdesc -> fdescfs, portal -> portalfs, union -> unionfs. - Renamed corresponding kernel options: FDESC -> FDESCFS, PORTAL -> PORTALFS, UNION -> UNIONFS. - Install header files for the above file systems. - Removed bogus -I${.CURDIR}/../../sys CFLAGS from userland Makefiles. Notes: svn path=/head/; revision=77031
* Undo part of the tangle of having sys/lock.h and sys/mutex.h included inMark Murray2001-05-011-1/+6
| | | | | | | | | | | | | | 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 Baldwin2001-04-241-5/+1
| | | | | | | | | find before releasing the allproc lock and returning. Reviewed by: -smp, dfr, jake Notes: svn path=/head/; revision=75893
* Catch up to header include changes:John Baldwin2001-03-281-0/+1
| | | | | | | | - <sys/mutex.h> now requires <sys/systm.h> - <sys/mutex.h> and <sys/sx.h> now require <sys/lock.h> Notes: svn path=/head/; revision=74914
* Protect p_flag with the proc lock.John Baldwin2001-03-071-1/+6
| | | | Notes: svn path=/head/; revision=73906
* o Centralize inter-process access control, introducing:Robert Watson2000-08-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | int p_can(p1, p2, operation, privused) which allows specification of subject process, object process, inter-process operation, and an optional call-by-reference privused flag, allowing the caller to determine if privilege was required for the call to succeed. This allows jail, kern.ps_showallprocs and regular credential-based interaction checks to occur in one block of code. Possible operations are P_CAN_SEE, P_CAN_SCHED, P_CAN_KILL, and P_CAN_DEBUG. p_can currently breaks out as a wrapper to a series of static function checks in kern_prot, which should not be invoked directly. o Commented out capabilities entries are included for some checks. o Update most inter-process authorization to make use of p_can() instead of manual checks, PRISON_CHECK(), P_TRESPASS(), and kern.ps_showallprocs. o Modify suser{,_xxx} to use const arguments, as it no longer modifies process flags due to the disabling of ASU. o Modify some checks/errors in procfs so that ENOENT is returned instead of ESRCH, further improving concealment of processes that should not be visible to other processes. Also introduce new access checks to improve hiding of processes for procfs_lookup(), procfs_getattr(), procfs_readdir(). Correct a bug reported by bp concerning not handling the CREATE case in procfs_lookup(). Remove volatile flag in procfs that caused apparently spurious qualifier warnigns (approved by bde). o Add comment noting that ktrace() has not been updated, as its access control checks are different from ptrace(), whereas they should probably be the same. Further discussion should happen on this topic. Reviewed by: bde, green, phk, freebsd-security, others Approved by: bde Obtained from: TrustedBSD Project Notes: svn path=/head/; revision=65237
* Remove unused #includes.Poul-Henning Kamp1999-12-081-1/+0
| | | | | | | Obtained from: http://bogon.freebsd.dk/include Notes: svn path=/head/; revision=54292
* Introduce the new functionPoul-Henning Kamp1999-11-211-1/+1
| | | | | | | | | | | | | | | | | p_trespass(struct proc *p1, struct proc *p2) which returns zero or an errno depending on the legality of p1 trespassing on p2. Replace kern_sig.c:CANSIGNAL() with call to p_trespass() and one extra signal related check. Replace procfs.h:CHECKIO() macros with calls to p_trespass(). Only show command lines to process which can trespass on the target process. Notes: svn path=/head/; revision=53518
* $Id$ -> $FreeBSD$Peter Wemm1999-08-281-1/+1
| | | | Notes: svn path=/head/; revision=50477
* Support for i386 hardware breakpoints.Jonathan Lemon1999-07-091-0/+101
Submitted by: Brian Dean <brdean@unx.sas.com> Notes: svn path=/head/; revision=48692
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