head 1.33; access; symbols netbsd-9-5-RELEASE:1.31 perseant-exfatfs-base-20250801:1.33 perseant-exfatfs-base-20240630:1.33 perseant-exfatfs:1.33.0.6 perseant-exfatfs-base:1.33 netbsd-8-3-RELEASE:1.28.4.1 netbsd-9-4-RELEASE:1.31 netbsd-9-3-RELEASE:1.31 cjep_sun2x:1.33.0.4 cjep_sun2x-base:1.33 cjep_staticlib_x-base1:1.33 netbsd-9-2-RELEASE:1.31 cjep_staticlib_x:1.33.0.2 cjep_staticlib_x-base:1.33 netbsd-9-1-RELEASE:1.31 phil-wifi-20200421:1.32 phil-wifi-20200411:1.32 is-mlppp:1.31.0.4 is-mlppp-base:1.31 phil-wifi-20200406:1.32 netbsd-8-2-RELEASE:1.28.4.1 netbsd-9-0-RELEASE:1.31 netbsd-9-0-RC2:1.31 netbsd-9-0-RC1:1.31 phil-wifi-20191119:1.31 netbsd-9:1.31.0.2 netbsd-9-base:1.31 phil-wifi-20190609:1.30 netbsd-8-1-RELEASE:1.28.4.1 netbsd-8-1-RC1:1.28.4.1 pgoyette-compat-merge-20190127:1.29.2.1 pgoyette-compat-20190127:1.30 pgoyette-compat-20190118:1.30 pgoyette-compat-1226:1.30 pgoyette-compat-1126:1.30 pgoyette-compat-1020:1.30 pgoyette-compat-0930:1.30 pgoyette-compat-0906:1.30 pgoyette-compat-0728:1.29 netbsd-8-0-RELEASE:1.28.4.1 phil-wifi:1.29.0.4 phil-wifi-base:1.29 pgoyette-compat-0625:1.29 netbsd-8-0-RC2:1.28.4.1 pgoyette-compat-0521:1.29 pgoyette-compat-0502:1.29 pgoyette-compat-0422:1.29 netbsd-8-0-RC1:1.28.4.1 pgoyette-compat-0415:1.29 pgoyette-compat-0407:1.29 pgoyette-compat-0330:1.29 pgoyette-compat-0322:1.29 pgoyette-compat-0315:1.29 pgoyette-compat:1.29.0.2 pgoyette-compat-base:1.29 matt-nb8-mediatek:1.28.0.6 matt-nb8-mediatek-base:1.28 netbsd-8:1.28.0.4 netbsd-8-base:1.28 prg-localcount2-base3:1.28 prg-localcount2-base2:1.28 prg-localcount2-base1:1.28 prg-localcount2:1.28.0.2 prg-localcount2-base:1.28 pgoyette-localcount-20170426:1.28 bouyer-socketcan-base1:1.28 pgoyette-localcount-20170320:1.27 bouyer-socketcan:1.11.0.2 bouyer-socketcan-base:1.11 pgoyette-localcount:1.9.0.2 pgoyette-localcount-20170107:1.9; locks; strict; comment @# @; 1.33 date 2020.10.01.18.21.11; author kamil; state dead; branches; next 1.32; commitid pqJAbo98Kfv1heqC; 1.32 date 2020.04.02.11.19.09; author kamil; state Exp; branches; next 1.31; commitid 3RNsx6wc4UHeNN2C; 1.31 date 2019.06.14.16.11.11; author kamil; state Exp; branches; next 1.30; commitid mNh4r4EP978cParB; 1.30 date 2018.08.05.13.07.33; author kamil; state Exp; branches; next 1.29; commitid cp7nzxNesySdRVMA; 1.29 date 2017.08.28.00.46.07; author kamil; state Exp; branches 1.29.2.1 1.29.4.1; next 1.28; commitid MFC5MK9lwTGREU4A; 1.28 date 2017.04.08.01.08.36; author kamil; state Exp; branches 1.28.4.1; next 1.27; commitid lzqBHBXGSUYnrFMz; 1.27 date 2017.03.03.07.11.49; author kamil; state Exp; branches; next 1.26; commitid MMjXHzOE2JRfC4Iz; 1.26 date 2017.03.03.07.03.11; author kamil; state Exp; branches; next 1.25; commitid iI6mjsal633nz4Iz; 1.25 date 2017.03.02.14.25.41; author kamil; state Exp; branches; next 1.24; commitid R15DA15g1BN93ZHz; 1.24 date 2017.02.28.13.10.54; author kamil; state Exp; branches; next 1.23; commitid fIwbU0QIVBFeHIHz; 1.23 date 2017.02.20.03.37.24; author kamil; state Exp; branches; next 1.22; commitid tcvLiZXAltSHMDGz; 1.22 date 2017.02.17.21.22.02; author kamil; state Exp; branches; next 1.21; commitid pcvz7pkgCisxLlGz; 1.21 date 2017.02.14.18.38.07; author kamil; state Exp; branches; next 1.20; commitid iGxViTr81oEGXWFz; 1.20 date 2017.02.13.15.29.18; author kamil; state Exp; branches; next 1.19; commitid ATrAJZr11IoIWNFz; 1.19 date 2017.02.12.06.16.33; author kamil; state Exp; branches; next 1.18; commitid kgzBkpRbeFE5VCFz; 1.18 date 2017.02.12.05.21.34; author kamil; state Exp; branches; next 1.17; commitid Q8fqfPyNS6Y0CCFz; 1.17 date 2017.02.11.19.10.04; author kamil; state Exp; branches; next 1.16; commitid nAZ6kargilo8dzFz; 1.16 date 2017.02.08.14.53.50; author kamil; state Exp; branches; next 1.15; commitid J3DI3dMTWdJvU9Fz; 1.15 date 2017.02.08.03.44.41; author kamil; state Exp; branches; next 1.14; commitid uFtv2cXdJlIL96Fz; 1.14 date 2017.02.07.16.15.05; author kamil; state Exp; branches; next 1.13; commitid VNCxdMvucVJUn2Fz; 1.13 date 2017.01.26.01.12.13; author kamil; state Exp; branches; next 1.12; commitid 0ACr02BrCFhuMpDz; 1.12 date 2017.01.26.01.04.23; author kamil; state Exp; branches; next 1.11; commitid T76wuJ0jtmqAJpDz; 1.11 date 2017.01.14.01.36.28; author kamil; state Exp; branches 1.11.2.1; next 1.10; commitid WX6tA34u0OYhiSBz; 1.10 date 2017.01.08.04.27.36; author kamil; state Exp; branches; next 1.9; commitid kLWQ3Fkvao12r7Bz; 1.9 date 2016.12.31.20.57.15; author kamil; state Exp; branches 1.9.2.1; next 1.8; commitid FWLqs4TCjGeiabAz; 1.8 date 2016.12.26.08.43.55; author kamil; state Exp; branches; next 1.7; commitid bhGWYgUTq3Ruhtzz; 1.7 date 2016.12.26.03.24.11; author kamil; state Exp; branches; next 1.6; commitid SfbstnLTaPgHvrzz; 1.6 date 2016.12.24.05.43.31; author kamil; state Exp; branches; next 1.5; commitid ZKnnpkcOJmVolczz; 1.5 date 2016.12.19.03.19.37; author kamil; state Exp; branches; next 1.4; commitid Um4WiQwVYIDMHxyz; 1.4 date 2016.12.15.12.42.38; author kamil; state Exp; branches; next 1.3; commitid 7yBYKaBBGaTUW4yz; 1.3 date 2016.12.15.07.47.08; author kamil; state Exp; branches; next 1.2; commitid B4vX2YxFr08Qj3yz; 1.2 date 2016.12.14.06.26.04; author kamil; state Exp; branches; next 1.1; commitid WAS229xPneQUTUxz; 1.1 date 2016.12.13.09.44.35; author kamil; state Exp; branches; next ; commitid eCAFlnoTyMC32Oxz; 1.29.2.1 date 2018.09.06.06.51.43; author pgoyette; state Exp; branches; next ; commitid HCi1bXD317XIK0RA; 1.29.4.1 date 2019.06.10.21.42.38; author christos; state Exp; branches; next 1.29.4.2; commitid jtc8rnCzWiEEHGqB; 1.29.4.2 date 2020.04.13.07.45.37; author martin; state Exp; branches; next ; commitid X01YhRUPVUDaec4C; 1.28.4.1 date 2018.04.12.13.42.49; author martin; state Exp; branches; next ; commitid V8a6bWK6bpwsL9yA; 1.11.2.1 date 2017.04.21.16.51.16; author bouyer; state Exp; branches; next ; commitid dUG7nkTKALCadqOz; 1.9.2.1 date 2016.12.31.20.57.15; author pgoyette; state dead; branches; next 1.9.2.2; commitid uEL0C1YuiJrlV0Bz; 1.9.2.2 date 2017.01.07.08.53.45; author pgoyette; state Exp; branches; next 1.9.2.3; commitid uEL0C1YuiJrlV0Bz; 1.9.2.3 date 2017.03.20.06.52.12; author pgoyette; state Exp; branches; next 1.9.2.4; commitid jjw7cAwgyKq7RfKz; 1.9.2.4 date 2017.04.26.02.52.18; author pgoyette; state Exp; branches; next ; commitid ojV02aOSdzvBqZOz; desc @@ 1.33 log @Drop TODO.ptrace The remaining issues are mostly tracked in the ATF ptrace tests and GDB or LLDB test-suite. @ text @$NetBSD: TODO.ptrace,v 1.32 2020/04/02 11:19:09 kamil Exp $ Items we (currently) plan to finish in the ptrace(2) field: - verify ppid of core dump generated with PT_DUMPCORE it must point to the real parent, not tracer - add PT_DUMPCORE tests in the ATF framework - research kgdb(4) and of course: fix as many bugs as possible. Features in ELF, DWARF, CTF, DTrace are out of scope of the above list. @ 1.32 log @Update with reality Drop finished or not important tasks. @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.31 2019/06/14 16:11:11 kamil Exp $ @ 1.31 log @Update TODO.ptrace Drop compat32 entries as they were mostly addressed. Drop MD specific calls, it's up to port's CPU to contain various features like PT_STEP. @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.30 2018/08/05 13:07:33 kamil Exp $ a6 2 - adapt OpenBSD regress test (regress/sys/ptrace/ptrace.c) for the ATF context - reiterate over FreeBSD tests and add missing ones if applicable a7 7 - research kevent support for tracing a process over a file descriptor, this means alternative to wait(2)-based events with passing events over the kqueue API - signal handlers are global per application and they clash with GUI toolkits (and perhaps other libraries) - this is long term wishlist in GDB for Linux - the current approach is to fork and debug through GDB remote protocol (this is how it is done in LLDB) - add ATF tests for SIGCHLD @ 1.30 log @Update TODO.ptrace Drop the following entries: - PaX MPROTECT tests - done, implemented. - research of ipkdb(4) - it's gone, if it will be superseded it would be probably a networking interface for kgdb - PTRACE_VFORK implemented and covered by tests, there are SMP bugs left @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.29 2017/08/28 00:46:07 kamil Exp $ a15 2 - add support for PT_STEP, PT_GETREGS, PT_SETREGS, PT_GETFPREGS, PT_SETFPREGS in all ports a16 1 - fix more calls for netbsd32 compat a17 1 - check 64-bit debugger on 64-bit kernel tracing capabilities of 32-bit tracee @ 1.29 log @Remove the filesystem tracing feature This is a legacy interface from 4.4BSD, and it was introduced to overcome shortcomings of ptrace(2) at that time, which are no longer relevant (performance). Today /proc/#/ctl offers a narrow subset of ptrace(2) commands and is not applicable for modern applications use beyond simplistic tracing scenarios. This removal will simplify kernel internals. Users will still be able to use all the other /proc files. This change won't affect other procfs files neither Linux compat features within mount_procfs(8). /proc/#/ctl isn't available on Linux. Remove: - /proc/#/ctl from mount_procfs(8) - P_FSTRACE note from the documentation of ps(1) - /proc/#/ctl and filesystem tracing documentation from mount_procfs(8) - KAUTH_REQ_PROCESS_PROCFS_CTL documentation from kauth(9) - source code file miscfs/procfs/procfs_ctl.c - PFSctl and procfs_doctl() from sys/miscfs/procfs/procfs.h - KAUTH_REQ_PROCESS_PROCFS_CTL from sys/sys/kauth.h - PSL_FSTRACE (0x00010000) from sys/sys/proc.h - P_FSTRACE (0x00010000) from sys/sys/sysctl.h Reduce code complexity after removal of this functionality. Update TODO.ptrace accordingly: remove two entries about /proc tracing. Do not keep legacy notes as comments in the headers about removed PSL_FSTRACE / P_FSTRACE, as this interface had little number of users (close or equal to zero). Proposed on tech-kern@@. All filesystem tracing utility users are encouraged to switch to ptrace(2). Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.28 2017/04/08 01:08:36 kamil Exp $ a9 1 - add ATF tests for PT_WRITE_I and PIOD_WRITE_I - test mprotect restrictions a17 1 - add proper implementation of PTRACE_VFORK for vfork(2)-like events a19 1 - research ipkdb(4) @ 1.29.4.1 log @Sync with HEAD @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.30 2018/08/05 13:07:33 kamil Exp $ d10 1 d19 1 d22 1 @ 1.29.4.2 log @Mostly merge changes from HEAD upto 20200411 @ text @d1 1 a1 1 $NetBSD$ d7 2 d10 10 d21 1 @ 1.29.2.1 log @Sync with HEAD Resolve a couple of conflicts (result of the uimin/uimax changes) @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.30 2018/08/05 13:07:33 kamil Exp $ d10 1 d19 1 d22 1 @ 1.28 log @Update TODO.ptrace Remove entries: - research support PT_SYSCALL & PT_STEP combined like in Linux - GDB Remote Protocol expects a case with a step with a signal to be sent, this is currently unsupported on NetBSD Implemented as PT_SETSTEP and PT_CLEARSTEP. Remove: - support QPassSignals (PT_SET_SIGPASS/PT_GET_SIGPASS) in the kernel, a way to stop routing a set of signals to tracer as they are uninteresting - GDB and LLDB expect this feature This interface has been abandoned and will be handled on the debugger level. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.27 2017/03/03 07:11:49 kamil Exp $ a10 5 - add tests for the procfs interface covering all functions available on the same level as ptrace(2) - remove 4.4BSD tracing with /proc, restrict /proc to Linux compat, to be superseded with kevent tracing, the original purpose of /proc debugging is long gone (performance issues with PT_WRITE_* and PT_READ_*) @ 1.28.4.1 log @Pull up following revision(s) (requested by kamil in ticket #713): sys/modules/procfs/Makefile: revision 1.4 sys/miscfs/procfs/procfs_vfsops.c: revision 1.98 bin/ps/ps.1: revision 1.108 sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.32 sys/miscfs/procfs/procfs_vnops.c: revision 1.198 sys/kern/sys_ptrace_common.c: revision 1.23 sys/kern/sys_ptrace_common.c: revision 1.24 sbin/mount_procfs/mount_procfs.8: revision 1.36 sys/kern/sys_ptrace_common.c: revision 1.25 sys/kern/sys_ptrace.c: revision 1.5 sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.30 sys/sys/proc.h: revision 1.342 sys/kern/sys_ptrace_common.c: revision 1.26 sys/miscfs/procfs/procfs_ctl.c: file removal sys/kern/sys_ptrace_common.c: revision 1.27 sys/miscfs/procfs/procfs_subr.c: revision 1.109 sys/kern/sys_ptrace_common.c: revision 1.28 sys/secmodel/extensions/secmodel_extensions.c: revision 1.8 sys/kern/sys_ptrace_common.c: revision 1.29 sys/sys/ptrace.h: revision 1.62 sys/compat/netbsd32/netbsd32_signal.c: revision 1.45 share/man/man9/kauth.9: revision 1.109 sys/miscfs/procfs/files.procfs: revision 1.12 sys/compat/netbsd32/netbsd32.h: revision 1.115 sys/miscfs/procfs/procfs.h: revision 1.72 sys/compat/netbsd32/netbsd32_ptrace.c: revision 1.5 sys/kern/kern_sig.c: revision 1.337 sys/sys/kauth.h: revision 1.75 sys/sys/sysctl.h: revision 1.224 sys/kern/sys_ptrace_common.c: revision 1.30 sys/kern/sys_ptrace_common.c: revision 1.31 sys/kern/sys_ptrace_common.c: revision 1.32 sys/kern/sys_ptrace_common.c: revision 1.33 sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.20 sys/kern/sys_ptrace_common.c: revision 1.34 sys/kern/sys_ptrace_common.c: revision 1.36 sys/kern/kern_proc.c: revision 1.207 sys/kern/kern_exit.c: revision 1.269 doc/TODO.ptrace: revision 1.29 Make {s,g}et{db,fp,}regs work again for PK_32 processes XXX: pullup-8 add disgusting magic to handle compat_netbsd32 as a module. use process_*reg32 instead of struct *reg32. Remove the filesystem tracing feature This is a legacy interface from 4.4BSD, and it was introduced to overcome shortcomings of ptrace(2) at that time, which are no longer relevant (performance). Today /proc/#/ctl offers a narrow subset of ptrace(2) commands and is not applicable for modern applications use beyond simplistic tracing scenarios. This removal will simplify kernel internals. Users will still be able to use all the other /proc files. This change won't affect other procfs files neither Linux compat features within mount_procfs(8). /proc/#/ctl isn't available on Linux. Remove: - /proc/#/ctl from mount_procfs(8) - P_FSTRACE note from the documentation of ps(1) - /proc/#/ctl and filesystem tracing documentation from mount_procfs(8) - KAUTH_REQ_PROCESS_PROCFS_CTL documentation from kauth(9) - source code file miscfs/procfs/procfs_ctl.c - PFSctl and procfs_doctl() from sys/miscfs/procfs/procfs.h - KAUTH_REQ_PROCESS_PROCFS_CTL from sys/sys/kauth.h - PSL_FSTRACE (0x00010000) from sys/sys/proc.h - P_FSTRACE (0x00010000) from sys/sys/sysctl.h Reduce code complexity after removal of this functionality. Update TODO.ptrace accordingly: remove two entries about /proc tracing. Do not keep legacy notes as comments in the headers about removed PSL_FSTRACE / P_FSTRACE, as this interface had little number of users (close or equal to zero). Proposed on tech-kern@@. All filesystem tracing utility users are encouraged to switch to ptrace(2). Sponsored by untangle the mess: - factor out common code - break each ptrace subcall to its own sub-function .. more to come ... - reduce ifdef ugliness by moving it up top. - factor out PT_IO and make PT_{READ,WRITE}_{I,D} use it - factor out PT_DUMPCORE - factor out sendsig code .. more to come ... handle siginfo requests for ptrace32 ptrace: Partially undo PT_{READ,WRITE}_{I,D} and unbreak these commands The refactored code did not work and was generating EFAULT. Sponsored by Merge the code back; the problem was that since we are reading/writing to a kernel address for PT_{READ,WRITE}_{I,D} we need the kernel vmspace. provide separate read and write functions to accomodate register functions that need a size argument. don't ignore error from copyout_piod Use the proper process (the tracee) to get information about lwps and registers and the tracer for vmspace. Add new sysctl(3) entry: security.models.extensions.user_set_dbregs Model this new sysctl(3) entry after "user_set_cpu_affinity" in the same level of sysctl(3) switches. Allow to read unconditionally Debug Registers (no change here). This is convenient as even if a user of a debugger does not use hardware assisted watchpoints/breakpoints, a debugger can still prompt these values to store in an internal cache with context of registers. Reading them should have no security concerns. Add a paranoid MI switch that prohibits by default setting these registers by a regular user (non-superuser). Make this switch disabled by default. There are enough reserved bits out there to allow using them unconditionally on hardened hosts. Features shipped with Debug Registers are optional features in debuggers. There is no reduction in elementary functionality. Reviewed by Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.28 2017/04/08 01:08:36 kamil Exp $ d11 5 @ 1.27 log @TODO.ptrace: Remove entry about addition of TRAP_SCE and TRAP_SCX These siginfo(2) codes have been committed. @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.26 2017/03/03 07:03:11 kamil Exp $ a25 1 - research support PT_SYSCALL & PT_STEP combined like in Linux a29 5 - GDB Remote Protocol expects a case with a step with a signal to be sent, this is currently unsupported on NetBSD - support QPassSignals (PT_SET_SIGPASS/PT_GET_SIGPASS) in the kernel, a way to stop routing a set of signals to tracer as they are uninteresting - GDB and LLDB expect this feature @ 1.26 log @Add new entry in TODO.ptrace about QPassSignals Added: support QPassSignals (PT_SET_SIGPASS/PT_GET_SIGPASS) in the kernel, a way to stop routing a set of signals to tracer as they are uninteresting - GDB and LLDB expect this feature @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.25 2017/03/02 14:25:41 kamil Exp $ a25 1 - add si_code values for PT_SYSCALL: TRAP_SCE and TRAP_SCX @ 1.25 log @Add new entry in TODO.ptrace about PT_STEP with a signal Added: GDB Remote Protocol expects a case with a step with a signal to be sent, this is currently unsupported on NetBSD @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.24 2017/02/28 13:10:54 kamil Exp $ d34 3 @ 1.24 log @Sync TODO.ptrace with reality Remove entries: - add new ptrace(2) calls to lock (suspend) and unlock LWP within a process - switch PT_WATCHPOINT* to PT_*ETDBREGS and document it, add ATF tests - add ATF tests for PT_SYSCALL and PT_SYSCALLEMU Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.23 2017/02/20 03:37:24 kamil Exp $ d32 2 @ 1.23 log @Add new entry to TODO.ptrace check 64-bit debugger on 64-bit kernel tracing capabilities of 32-bit tracee Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.22 2017/02/17 21:22:02 kamil Exp $ a8 1 - add new ptrace(2) calls to lock (suspend) and unlock LWP within a process a10 1 - switch PT_WATCHPOINT* to PT_*ETDBREGS and document it, add ATF tests a26 1 - add ATF tests for PT_SYSCALL and PT_SYSCALLEMU @ 1.22 log @Add new entry in TODO.ptrace Research kgdb. It should be supported by GDB and LLDB. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.21 2017/02/14 18:38:07 kamil Exp $ d34 1 @ 1.21 log @Add new entry to TODO.ptrace research ipkdb(4) Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.20 2017/02/13 15:29:18 kamil Exp $ d33 1 @ 1.20 log @Update TODO.ptrace Note BSD4.4-like /proc debugging removal Explain kevent(2)-based debugging proposal Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.19 2017/02/12 06:16:33 kamil Exp $ d32 1 @ 1.19 log @Update TODO.ptrace Remove: - add PT_SET_SIGMASK and PT_GET_SIGMASK - used by checkpointing software This interface has been committed to HEAD. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.18 2017/02/12 05:21:34 kamil Exp $ d15 9 a23 3 - add support to read debugger events via a file descriptor in procfs (kevent(2)), it's still useful in cases when a parent traces tracee and has to call waitpid(2) for its child - as this clashes with GUI toolkits @ 1.18 log @Update TODO.ptrace with new entries Added entries: - add support to read debugger events via a file descriptor in procfs (kevent(2)), it's still useful in cases when a parent traces tracee and has to call waitpid(2) for its child - as this clashes with GUI toolkits - fix more calls for netbsd32 compat Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.17 2017/02/11 19:10:04 kamil Exp $ a23 1 - add PT_SET_SIGMASK and PT_GET_SIGMASK - used by checkpointing software @ 1.17 log @Update TODO.ptrace Remove entries: - remove exect(3) from libc - there is no usecase for it Interface has been marked obsolete and it's on the queue to be removed for. - research what happens when a tracee masks signals (including SIGTRAP) and a breakpoint is triggered It has been researched and ATF tests added (signal1 .. signal10). It's currently broken on NetBSD. Add: - research support PT_SYSCALL & PT_STEP combined like in Linux There are circumstances when we want to sstep and catch syscall events. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.16 2017/02/08 14:53:50 kamil Exp $ d15 3 d26 1 @ 1.16 log @Add new entry in TODO.ptrace Added: add PT_SET_SIGMASK and PT_GET_SIGMASK - used by checkpointing software Example software: gdb, criu @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.15 2017/02/08 03:44:41 kamil Exp $ a17 3 - remove exect(3) from libc - there is no usecase for it - research what happens when a tracee masks signals (including SIGTRAP) and a breakpoint is triggered d22 1 @ 1.15 log @libpthread_dbg(3) deletion from the base distribution libpthread_dbg(3) is a remnant library from the M:N thread model (pre-NetBSD-5.0) API to introspect threads within a process and for use of debuggers. Currently in the 1:1 model it's not used in GDB neither in LLDB and it's not either planned to be used. It's current function to read pthread_t structures is realizable within a regular debugger capable to instrospect objects within a tracee (GDB, LLDB...). Remaining users of this API can still use this library from pkgsrc/devel/libpthread_dbg. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.14 2017/02/07 16:15:05 kamil Exp $ d24 1 @ 1.14 log @Update TODO.ptrace Note PT_WATCHPOINT change to PT_*ETDBREGS. Remove GDB and LLDB related entries from generic ptrace(2) TODO. Note need for TRAP_SCE and TRAP_SCX si_codes in PT_SYSCALL*. Note removal request of pthread_dbg(3). Sponsord by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.13 2017/01/26 01:12:13 kamil Exp $ a18 1 - remove pthread_dbg(3) from the base distribution @ 1.13 log @Update TODO.ptrace Added: - reiterate over FreeBSD tests and add missing ones if applicable Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.12 2017/01/26 01:04:23 kamil Exp $ d12 1 a12 1 - once the API for hardware watchpoints will stabilize, document it a16 2 - integrate all ptrace(2) features in gdb - add ptrace(2) NetBSD support in LLDB d18 2 a19 3 - remove exect(3) - there is no usecase for it - refactor pthread_dbg(3) to only query private pthread_t data, otherwise it duplicates ptrace(2) interface and cannot cover all types of threads d23 1 @ 1.12 log @Update TODO.ptrace Drop: - add ATF tests for PIOD_READ_AUXV Add new entry: - research what happens when a tracee masks signals (including SIGTRAP) and a breakpoint is triggered Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.11 2017/01/14 01:36:28 kamil Exp $ d8 1 @ 1.11 log @Update TODO.ptrace Removed: - evaluate equivalent for PTRACE_O_TRACECLONE from Linux clone(2)-like calls are traced with PTRACE_FORK, PTRACE_VFORK and PTRACE_VFORK_DONE. VFORK ones block parent till termination or execve(2) of its child. Added: - add proper implementation of PTRACE_VFORK for vfork(2)-like events Currently PTRACE_VFORK is a stub. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.10 2017/01/08 04:27:36 kamil Exp $ a10 1 - add ATF tests for PIOD_READ_AUXV d22 2 @ 1.11.2.1 log @Sync with HEAD @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.28 2017/04/08 01:08:36 kamil Exp $ d8 1 a8 1 - reiterate over FreeBSD tests and add missing ones if applicable d11 2 a14 9 - remove 4.4BSD tracing with /proc, restrict /proc to Linux compat, to be superseded with kevent tracing, the original purpose of /proc debugging is long gone (performance issues with PT_WRITE_* and PT_READ_*) - research kevent support for tracing a process over a file descriptor, this means alternative to wait(2)-based events with passing events over the kqueue API - signal handlers are global per application and they clash with GUI toolkits (and perhaps other libraries) - this is long term wishlist in GDB for Linux - the current approach is to fork and debug through GDB remote protocol (this is how it is done in LLDB) d17 2 d20 3 d24 1 a24 4 - fix more calls for netbsd32 compat - research ipkdb(4) - research kgdb(4) - check 64-bit debugger on 64-bit kernel tracing capabilities of 32-bit tracee @ 1.10 log @Update TODO.ptrace 1. siginfo_t accessors done 2. PTRACE_O_TRACEEXIT not applicable for NetBSD as we are tracing the whole process at once, not per thread 3. PTRACE_O_TRACEEXEC implemented as SIGTRAP & TRAP_EXEC Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.9 2016/12/31 20:57:15 kamil Exp $ d19 1 a19 1 - evaluate equivalent for PTRACE_O_TRACECLONE from Linux @ 1.9 log @Update TODO.ptrace Mark exect(3) for removal, there is no use-case for it. exec() is already monitored and emits SIGTRAP when traced. Accessor for siginfo_t is not case for PT_IO -- it's not reading/writing process space of other process, but shared kernel space. @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.8 2016/12/26 08:43:55 kamil Exp $ d19 1 a19 2 - add support for detecting equivalent events to PTRACE_O_TRACEEXEC, PTRACE_O_TRACECLONE, PTRACE_O_TRACEEXIT from Linux a24 1 - add support to read and write siginfo_t from and to tracee @ 1.9.2.1 log @file TODO.ptrace was added on branch pgoyette-localcount on 2017-01-07 08:53:45 +0000 @ text @d1 30 @ 1.9.2.2 log @Sync with HEAD. (Note that most of these changes are simply $NetBSD$ tag issues.) @ text @a0 30 $NetBSD: TODO.ptrace,v 1.9 2016/12/31 20:57:15 kamil Exp $ Items we (currently) plan to finish in the ptrace(2) field: - verify ppid of core dump generated with PT_DUMPCORE it must point to the real parent, not tracer - adapt OpenBSD regress test (regress/sys/ptrace/ptrace.c) for the ATF context - add new ptrace(2) calls to lock (suspend) and unlock LWP within a process - add PT_DUMPCORE tests in the ATF framework - add ATF tests for PT_WRITE_I and PIOD_WRITE_I - test mprotect restrictions - add ATF tests for PIOD_READ_AUXV - once the API for hardware watchpoints will stabilize, document it - add tests for the procfs interface covering all functions available on the same level as ptrace(2) - add support for PT_STEP, PT_GETREGS, PT_SETREGS, PT_GETFPREGS, PT_SETFPREGS in all ports - integrate all ptrace(2) features in gdb - add ptrace(2) NetBSD support in LLDB - add support for detecting equivalent events to PTRACE_O_TRACEEXEC, PTRACE_O_TRACECLONE, PTRACE_O_TRACEEXIT from Linux - remove exect(3) - there is no usecase for it - refactor pthread_dbg(3) to only query private pthread_t data, otherwise it duplicates ptrace(2) interface and cannot cover all types of threads - add ATF tests for SIGCHLD - add ATF tests for PT_SYSCALL and PT_SYSCALLEMU - add support to read and write siginfo_t from and to tracee and of course: fix as many bugs as possible. Features in ELF, DWARF, CTF, DTrace are out of scope of the above list. @ 1.9.2.3 log @Sync with HEAD @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.27 2017/03/03 07:11:49 kamil Exp $ d8 1 a8 1 - reiterate over FreeBSD tests and add missing ones if applicable d11 2 a14 9 - remove 4.4BSD tracing with /proc, restrict /proc to Linux compat, to be superseded with kevent tracing, the original purpose of /proc debugging is long gone (performance issues with PT_WRITE_* and PT_READ_*) - research kevent support for tracing a process over a file descriptor, this means alternative to wait(2)-based events with passing events over the kqueue API - signal handlers are global per application and they clash with GUI toolkits (and perhaps other libraries) - this is long term wishlist in GDB for Linux - the current approach is to fork and debug through GDB remote protocol (this is how it is done in LLDB) d17 7 a23 1 - add proper implementation of PTRACE_VFORK for vfork(2)-like events d25 2 a26 10 - research support PT_SYSCALL & PT_STEP combined like in Linux - fix more calls for netbsd32 compat - research ipkdb(4) - research kgdb(4) - check 64-bit debugger on 64-bit kernel tracing capabilities of 32-bit tracee - GDB Remote Protocol expects a case with a step with a signal to be sent, this is currently unsupported on NetBSD - support QPassSignals (PT_SET_SIGPASS/PT_GET_SIGPASS) in the kernel, a way to stop routing a set of signals to tracer as they are uninteresting - GDB and LLDB expect this feature @ 1.9.2.4 log @Sync with HEAD @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.28 2017/04/08 01:08:36 kamil Exp $ d26 1 d31 5 @ 1.8 log @Add new entry in TODO.ptrace + add support to read and write siginfo_t from and to tracee (reuse PT_IO?) Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.7 2016/12/26 03:24:11 kamil Exp $ d21 1 a21 1 - exect(3) rethink or remove -- maybe PT_TRACE_ME + PTRACE_O_TRACEEXEC? d26 1 a26 1 - add support to read and write siginfo_t from and to tracee (reuse PT_IO?) @ 1.7 log @Add new entry in TODO.ptrace + add ATF tests for PT_SYSCALL and PT_SYSCALLEMU Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.6 2016/12/24 05:43:31 kamil Exp $ d25 2 a26 1 - add ATF tsts for PT_SYSCALL and PT_SYSCALLEMU @ 1.6 log @Add new entry in TODO.ptrace New entry: - add ATF tests for SIGCHLD @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.5 2016/12/19 03:19:37 kamil Exp $ d21 1 a21 1 - exect(3) rething or remove -- maybe PT_TRACE_ME + PTRACE_O_TRACEEXEC? d25 1 @ 1.5 log @TODO.ptrace: Update notes about MD documentation Currently all the MD interfaces are documented, remove this line from TODO. Add new note: once the API for hardware watchpoints will stabilize, document it Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.4 2016/12/15 12:42:38 kamil Exp $ d24 1 @ 1.4 log @Update TODO.ptrace with recent changes Hardware assisted breakpoint/watchpoint API has been merged with current. Add note about pthread_dbg(3) API needed to be refactored and limited to querying POSIX thread private data fields. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.3 2016/12/15 07:47:08 kamil Exp $ d12 1 a12 2 - document all MD specific ptrace(2) interfaces (PT_GETXMMREGS, PT_SETXMMREGS, ...) @ 1.3 log @Add new entries to TODO.ptrace - add support for detecting equivalent events to PTRACE_O_TRACEEXEC, PTRACE_O_TRACECLONE, PTRACE_O_TRACEEXIT from Linux - exect(3) rething or remove -- maybe PT_TRACE_ME + PTRACE_O_TRACEEXEC? Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.2 2016/12/14 06:26:04 kamil Exp $ a4 1 - merge hardware watchpoint (breakpoint) support with HEAD d23 2 a24 1 @ 1.2 log @Update TODO.ptrace Add new entries: - add support for PT_STEP, PT_GETREGS, PT_SETREGS, PT_GETFPREGS, PT_SETFPREGS in all ports - integrate all ptrace(2) features in gdb - add ptrace(2) NetBSD support in LLDB Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.ptrace,v 1.1 2016/12/13 09:44:35 kamil Exp $ d21 4 @ 1.1 log @Add initial TODO list for the ptrace(2) (and procfs) interface. Sponsored by @ text @d1 1 a1 1 $NetBSD: TODO.8,v 1.5 2016/10/26 20:05:11 christos Exp $ d13 1 a13 1 - document more all MD specific ptrace(2) interfaces d17 4 @