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mdb Solaris Debuging mini HowTo

Oct 122011

Sveiki,

norėdami įdiegti Solaris 10u9 mdb programėlę susidiekime SUNWmdb ir SUNWmdbr paketus. Visų pirma prijunkime CD.ISO, kas gali būti atlikta tik iš globalios zonos (Jei nenaudojate konteinerių, tai galėjote pabraukto teksto ir neskaityti ):
lofiadm -a /tmp/software.iso /dev/lofi/1 mount -F hsfs -o ro /dev/lofi/1 /mnt
Pereikim į mum reikiamą aplanką
cd /mnt/Solaris_10/Product
Susimeskim visą tai:
pkgadd -d . SUNWmdb pkgadd -d . SUNWmdbr

Toliau beliko arba prisijungti (ir sustabdyti) procesą: mdb -p ĖPID arba atidaryti core/dump failą: mdb core_dump
Na va o daba mdb komandos:

Control Commands
Input & Output Commands
Format Specifications
System Examination
Target Examination
Tracing, Watchpoints & Breakpoints
General Debugging

Control Commands
`$<` or `$<<`	Replace input with a macro or source a macro.
`$>`filename or `::log` filename	Log session to a file. If no filename, use default.
`\|`	Pipe. Allows simple commands to be joined.
`!`	Shell escape. Acts as a pipe to a shell command. (Not available in `kmdb`.)
`//`	Comment. Following words on the same line are ignored.
`$M`	Show built-in macros (Kernel debugger only).
`$P`string	Set prompt to string.
`$Q` `::quit`	Quit. (From `kmdb`, use `-u` option to avoid exiting to `ok>` prompt.)
`$W`	Re-open target in writable mode.
`$p`	Change target context.
`$w`	Control output page width.
`:A`	Attach to a process or core file.
`:R`	Release attachment.
`:k`	Kill and release targets.
`$v`	Print non-zero variables.
`>` `::typeset`	Assign a variable.
`::dcmds`	Print available commands.
`::nm`	Print symbol table. (`-P` specifies a private symbol table. Manipulated with `::nmadd`and `::nmdelete`
`::help` dcmd	Provide usage notes on a dcmd.
`::typeset`	Manipulate variable.
`::walk`	Walk data structure.
`::walkers`	List available walkers.

Input & Output Commands
`$<` `$<<`	Replace input with a macro or source a macro.
`$>`filename	Log session to a file. If no filename, use default.
address`/`format-spec `/`format-spec	Read the value in a memory addressformatted as format-spec. If no address is provided, use dot.
address`/W` value	Write the value in the four bytes starting with address. If no address is provided, usedot. `v`, `w` or `Z` may also be used instead of `W`to write 1, 2 or 8 bytes, respectively.
address`=`format-spec `=`format-spec	Format immediate value of address or dot.
`?`	Read/write primary object file.
`@`format-spec	Read/write physical address as format-spec.
`\`format-spec	Read/write physical address as format-spec.

The difference between / and = is subtle. For example, to find the address holding the value of the maxphys symbol in decimal, we would run:
maxphys=D
To find the value inside the above address, we would use / like:
maxphys/D

Format Specification
Note that the `::formats` dcmd prints out a full list of supported formats.
`D`	Display in signed decimal.
`i`	Display as a disassembled instruction.
`U`	Display in unsigned decimal.
`X`	Display in signed hexidecimal.
`0t`xyz	Specifies xyz as a decimal value.

System Examination
`cpu$<cpus`	Display `cpu0`.
`cpu`n`$<cpu`	Display cpu #n.
`$<msgbuf`	Display message buffer, including all console messages up to panic.
`<`sp`$<stacktrace`	Use the stack pointer address (sp) to display a detailed stack trace.
`$r` `::regs`	Display general registers, including program counter and stack pointer.
`::callout`	Print callout table.
`::cpuinfo -v`	Information about activities of CPUs, including runqueue inhabitants.
`::cpuregs ::cpuregs -c cpuid`	Print CPU registers. `kmdb` only. Can specify a cpu.
`::cpustack ::cpustack -ccpuid`	Print CPU stack. `kmdb` only. Can specify a cpu.
`::dnlc`	Print DNLC contents.
`::ipcs`	Print SVR4 IPC information.
`::kmalog`	Display kernel memory log and stack traces.
`::kmastat`	Print current kernel memory allocations
`::memstat`	Print current memory usage.
`::nm`	Print symbol table. (`-P` specifies a private symbol table. Manipulated with `::nmadd`and `::nmdelete`
`::ps`	List processes with associated threads and lwps
`::ptree`	Print process tree.

Target Examination
`$?`	Print status and registers.
`$C`	Show call trace and arguments, saved frame pointer and saved program counter for each stack frame.
`$X`, `$Y`, `$x`, `$y` and`::fpregs`	Display floating point registers.
`$c`	Display stack backtrace.
`$e`	Print list of global symbols.
`$f`	Print list of source files.
`$l`	Print representative thread’s lwp ID.
`$m`	Print address space mappings.
`$r` `::regs`	Display general registers, including program counter and stack pointer.
`as::as2proc`	Convert as pointer to a `proc_t` pointer.
`::devbindings`	`devinfo` nodes bound to device-name ormajor-num.
`::devinfo`	Detailed `devinfo` of node.
`::devinfo2driver`	Driver name for this node.
`::devnames`	Print `devnames` array.
`::devt`	Display `dev_t`‘s major & minor numbers.
`::did2thread`	Kernel thread for this ID.
`::dump`address	Dump memory from address.
`::findfalse`	Find potentially falsely shared structures.
`::findleaks`	Search for potential kernel memory leaks.
`::findlocks`	Find locks held by specified thread.
`threadp::findstack`	Find kernel thread stack for associated thread.
`::inode`	Display summary of `inode_t`.
`::kmsqid`	Display message queue structure (`kmsqid`).
`::ksemid`	Display a semaphore structure (`ksemid`).
`::kshmid`	Display a shared memory structure (`kshmid`).
`::pgrep pattern`	Find `proc_t` pointers matching the pattern.
`0tPID::pid2proc`	Convert decimal PID to a `proc_t` pointer.
`procp::ps`	Process information matching the associated `proc_t`.
`::status`	Print summary of target status.
`sobj::walk blocked`	Walk threads blocked on a particular synchronization object (sobj).
`procp::walk thread`	Walk threads of associated process.
`sobj::wchaninfo -v`	Blocked on condition variables for a particular synchronization object (sobj).
`address::whatis`	Attempts to identify address contents.
`vnode::whereopen`	Processes with vnode open.

Tracing, Watchpoints and Breakpoints
(Breakpoints for kernel debugger only.)
`$b`	Show all breakpoints.
`$i`	Print list of ignored signals.
`:a`	Set a watchpoint.
`:b`	Set a breakpoint.
`:c` or `::cont`	Continue target execution.
`:d`	Delete a breakpoint.
`:e`	Step over next instruction.
`:i`	Step over next instruction.
`:k`	Kill and release targets.
`:p`	Set execute access watchpoints.
`:r`	Run new target process.
`:s`	Step target to next instruction.
`:t`	Stop on delivery of specified signals.
`:u`	Step out of current function.
`:w`	Set write access watchpoint.
`:z`	Delete all breakpoints.

General Debugging
`$G`	Toggle C++ demangling.
`$V`	Toggle disassembly mode.
`$g`	Toggle C++ demangling.
`address::dis`	Disassemble text starting at address.

Comparison Operators
`==`	Logical equality.
`!=`	Logical inequality.
`&`	Bitwise AND.
`\|`	Bitwise OR.
`^`	Bitwise XOR.

counter.li.org atnaujino savo veiklą Linuxcounter.net vardu

Fun, Kompai, Mąstymai No Responses »

Sep 272011

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Linux naudotojų skaičiuoklės projektas startavo 1993 metais. Šio projekto įkūrėjas Harald Tveit Alvestrand. Vėliau projektui besivystant jis peraugo į nepelno siekiančią organizaciją, kuri buvo registruota Norvegijoje 1999m. gegužės mėn. 1 d., kurios vadovu tapo Linux skaičiuoklės projekto įkūtėjas Harald Tveit Alvestrand. Projekto tikslas sužinoti apytikslų OS Linux paplitimą bei Linux ideologijos plėtra. 2007 metais buvo paskelbta paskutinė naujiena counter.li.org tinklalapyje.
Šis projektas buvo nebeatnaujintas jau daugiau nei ketveri metai. Dėl naujų sistemų atsiradimo bei senųjų sistemų atnaujinimo atsirado nesklandumų interpretuojant siunčiamus pranešimus sistemai. Taip pat verta nepamiršti, kad atsirado ir patobulėjo naujos technologijos ir atsirado poreikis perrašyti patį puslapio atvaizdavimo mechanizmą. Visą šį darbą apsiėmė daryti ir jam vadovauti Alexander Mieland.
Norėdami, kad Jūs būtumėt įskaičiuotas į Linux bendruomenę registruokitės adresu: linuxcounter.net/register.html. Kiekvienas užsiregistravęs gauna viešą internetinį puslapį, kuriame galima skelbti (ar neskelbti) informaciją apie save. O štai ir mano nuorodėlė BiG_NoBoDy. Vėliau aprašysiu visą naujo kompiuterio registravimo procesą.

Taip pat pridedu laišką gautą iš Alexander Mieland, bet jei jis prieštaraus aš jį pašalinsiu.

From - Thu Sep 22 23:01:08 2011 X-Account-Key: account15 X-UIDL: GmailId132733ae303c102d X-Mozilla-Status: 1003 X-Mozilla-Status2: 00000000 X-Mozilla-Keys: Delivered-To: Received: by with SMTP id j6cs169924pbp; Fri, 16 Sep 2011 10:13:52 -0700 (PDT) Received: by 10.204.146.9 with SMTP id f9mr1861657bkv.385.1316193231764; Fri, 16 Sep 2011 10:13:51 -0700 (PDT) Return-Path: < > Received: from ( . [x.x.x.x]) by mx.google.com with ESMTP id i3si5018600bke.79.2011.09.16.10.13.51; Fri, 16 Sep 2011 10:13:51 -0700 (PDT) Received-SPF: neutral (google.com: x.x.x.x is neither permitted nor denied by best guess record for domain of ) client-ip=x.x.x.x; Authentication-Results: mx.google.com; spf=neutral (google.com: x.x.x.x is neither permitted nor denied by best guess record for domain of ) smtp.mail= Received: from localhost (localhost [127.0.0.1]) by (Postfix) with ESMTP id B4081359C1BA for < >; Fri, 16 Sep 2011 19:13:50 +0200 (CEST) X-Quarantine-ID: X-Virus-Scanned: Debian X-Amavis-Alert: BAD HEADER, Improper use of control character (char 0D hex): From: ...x Counter Project < >\r\n Received: from ([127.0.0.1]) by localhost ( [127.0.0.1]) (blablabla) with ESMTP id iXhHX1BjmIeC for < >; Fri, 16 Sep 2011 19:13:48 +0200 (CEST) Received: by blablabla id 4DA3F359C116; Fri, 16 Sep 2011 19:11:21 +0200 (CEST) To: Subject: [LiCo] The New Linux Counter - Announcement - Data Update Reminder From: The New Linux Counter Project < > Reply-To: info@linuxcounter.net X-Mailer: LinuxCounter.net - PHP Message-Id: < > Date: Fri, 16 Sep 2011 19:11:21 +0200 (CEST)


Hello BiG_NoBoDy
my name is Alexander Mieland and I'm the new manager of the Linux

Counter Project. Since I love statistics and because counter.li.org was

not developed at all since over four years, I've started to develop a

completly new and reworked project with the same but modernized design

and the same target.
Last week, Harald Alvestrand and I have decided that this new project

will be the New Linux Counter Project and replace the good old counter

of counter.li.org. The url of the new project is:

 - http://linuxcounter.net
I've worked hard to develop the first version of this new project and

some days ago I've imported all active users from the old, original

database of counter.li.org.
I now want to ask you to come to the new project, to login with your

old, known access data and then to update your personal data and your

Linux machines.
 - Your counter.li.org number is: 403332

 - The url to the new project:    http://linuxcounter.net
With this number and your password, you are able to also login to the

new project. If you don't know your password anymore, you will be able

to request a new password from the lost password page. To access this

page, you have to click on "Login". There you'll find the link to

the lost password page.
If you have problems accessing the new project or with the login, then

don't hesitate to contact me at alex@linuxcounter.net.
If you find a bug or have other problems with the project, then please

visit http://trac.linuxcounter.net, our new wiki and bugtracker.

So if you have found a bug or have feature requests or wishes, don't

hesitate to register on the wiki and file a ticket in the bugtracker.
Another possibility to discuss the new project, to ask questions and

report bugs or feature requests is our mailinglist. Please register

for our mailinglist by sending an email with "subscribe" in the body

to interest-request@counter.li.org. After registration you can

send your emails to interest@counter.li.org.
This new project now also has a twitter account! So please follow us:

 - http://twitter.com/#!/NewLinuxCounter
And one more thing: We also have an rss 2.0 feed that shows you the

most recent changes and news and announcements from the project:

 - http://linuxcounter.net/rss.php
So, please come to http://linuxcounter.net, login and update your data.
Thanks in advance!
Sincerely yours,
Alexander Mieland

http://linuxcounter.net

КВН 2011 Премьер лига – копаем картофан

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Aug 082011

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Samsung B2710 telefonas

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Jul 112011

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sręsti Jums patiems

Gerk Vytauto mineralini vandeni

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Jun 262011

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Mezon ZTE AX326

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Jun 202011

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Sveiki, pasiemiau Mezon’o nauja modemuka, ziuresim, su planu po 19lt/men. he he kompiliuosiu draiveriukus sian vakare…

Husky Pram striukė – pigu.lt

Belekas, Fun 2 Responses »

May 242011

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Sveiki, kaip jumi sekas?

Šiandien nusipirkau Husky Pram stiukytę iš pigu.lt.
Tiesiog noriu į darbą važinėti dviračiu… Šiandien pasitaisiau balniuką… Pakeičiau iš paprasto TORNADO (dviračio modelis) pimpalo (nežinau, jis taip atrodo)… į normalų VAIRAS… JĖĖĖ!!!
Vat tokiu dviratuku važiuosiu, o maniškį MADISON Memphis atidaviau Natkai… heh… vat taip vat… na ką, palinkėkite man sėkmės… Tai va, dviratuku važiuojant reiktų apsisaugoti nuo lietučio… Lietpaltis? suprakaituot gamalia… Taigi pasiėmiau striukytę Husky Pram iš pigu.lt, o ten buvo dydžiai S, M, L, XL… Kokie jie? Taigi radau Husky Pram dydžius šiame PDF

UNIX ABC

Belekas, Fun, Kompai, Mąstymai No Responses »

Apr 182011

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A is for awk, which runs like a snail, and
B is for biff, which reads all your mail.
C is for cc, as hackers recall, while
D is for dd, the command that does all.
E is for emacs, which rebinds your keys, and
F is for fsck, which rebuilds your trees.
G is for grep, a clever detective, while
H is for halt, which may seem defective.
I is for indent, which rarely amuses, and
J is for join, which nobody uses.
K is for kill, which makes you the boss, while
L is for lex, which is missing from DOS.
M is for more, from which less was begot, and
N is for nice, which it really is not.
O is for od, which prints out things nice, while
P is for passwd, which reads in strings twice.
Q is for quota, a Berkeleytype fable, and
R is for ranlib, for sorting ar table.
S is for spell, which attempts to belittle, while
T is for true, which does very little.
U is for uniq, which is used after sort, and
V is for vi, which is hard to abort.
W is for whoami, which tells you your name, while
X is, well, X, of dubious fame.
Y is for yes, which makes an impression, and
Z is for zcat, which handles compression.
– THE ABC'S OF UNIX /usr/share/games/fortune/songspoems