July 2010 - Darwin-dev - lists.apple.com

sem_open() returns ENOSPC
by Norm Green 14 Jul '10

14 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.10) Gecko/20100512 Thunderbird/3.0.5 _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com sem_t *theSem = sem_open(semName, O_CREAT|O_EXCL, 0660, 0);

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Re: [OT] Re: Inserting string data as blob in the database
by Alastair Houghton 12 Jul '10

12 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha1; c=relaxed; d=coriolis-systems.com; h= subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s=aug07; bh=o2rN5s6RTizq5G7wmxH84SQVEts=; b=AZJonYwxNDKwFXuIzHJ5HSz1I8n8 XrhJrFdNwuDCMpMOzwfwU5I5GT/4Rh1dfgZcI3Nev8wR7iBQfSrizsDEeP1LTEPT AsaaD3WYjjz0ddtY5B2dmLSiR/B/b32QoYKnIbz29aSXVTUv+ij7WfybUO51zNC4 p5HwdwQPwQAFExE= On 12 Jul 2010, at 13:02, Arnab Ganguly wrote: > I am really sorry for the inconvenience caused....I tried out concerned forum but no luck.This forum consists of highly technical expertise so just checking out if anybody can help me on this. Then try Stack Overflow or some other general programming forum. This list is for questions about Darwin; your question isn't even *peripherally* related---you even said it was to do with Windows! Kind regards, Alastair. -- http://alastairs-place.net _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: [OT] Re: Inserting string data as blob in the database
by Arnab Ganguly 12 Jul '10

12 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=0tlhWsR0R3qfPFsLLzuMZy1HdMxnTJV3SE5j6nmxa6E=; b=OS73UMqeEnDqTIFeUMeErosy15eHCVfRaHqzyni4/L4X5dSY+UqdfEhYyOVXM48XfP A9TTJ8eTZgD2wbK5a80KT8oMlKVaoljG8pDlMXfvl/axStSNkGnu3Z/yQdFvr1k+LwWY sYM5JcSZ5oduiqGBJyGZcZzuMYeLVyBkcA3FY= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=Wfebenehf4jm3kEUr3aLM+NmNeK5sDzY0CjKYiE0hCpVuOmRatFRKMMWCQHKyP8qpu GJykNBtVig+zJP4L4HqAOLX+kdlKzjV4VOJe4LBpidZS966cddRJk6G/CixkxEhR1wui lJi8pU1x5HyUvtN6zhiC6Q6hWbhfmT6VP1Xk4= _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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[OT] Re: Inserting string data as blob in the database
by Alastair Houghton 12 Jul '10

12 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha1; c=relaxed; d=coriolis-systems.com; h= subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; s=aug07; bh=IexECjaUSIXN/W4FOoV6SenrCY0=; b=Kae+nzxWMgMr1q/cM3LFl3Jrn5XL W/o7+BcVCxza9mAQdsESVORjwG2D9D73LS/C1qJFh/rM3Vzg0LSb1krUfz9XJB81 50govl9SDzRJyYMX4Wmio0iHepG9bPv8UAV38gdFgig509HBn7Pe4ZqDYvV3a3PZ UH9ICT9ucbL35wI= On 12 Jul 2010, at 12:27, Arnab Ganguly wrote: > Dear All, > I know this is not the correct forum but information request as any idea how do I insert string as a blob data in DB.The problem that I am getting is I am migrating from 32bit Windows to 64bit Windows. See? What did I say? Questions about how to grow onions. Arnab, this is *RIDICULOUS*. Kindly put some effort into finding an appropriate forum for your question, and stop wasting everyones' time. You might start with the developer forums/mailing lists for whatever database you are using. Kind regards, Alastair. -- http://alastairs-place.net _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Off Topic: Inserting string data as blob in the database
by Arnab Ganguly 12 Jul '10

12 Jul '10

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A question of depth
by Stéphane Sudre 08 Jul '10

08 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com - I'm playing with the following perl line: perl -e '$a="C"x22;for(1..50000){ ! -d $a and mkdir $a and chdir $a }' which is from http://www.securityfocus.com/bid/34008/info I'm checking it on a Mac OS X 10.6.4 system. This does not produce a crash, it just takes some time to complete. - I'm also playing with a slight variation: perl -e '$a="D"x22;for(1..60){ ! -d $a and mkdir $a and chdir $a }' Problems: . Only 44 levels shown in the Trash . The Empty Trash action does not work . More surprising, when you run rm -r DDDDDDDDDDDDDDDDDDDDDD, it asks: _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… The problem I'm seeing is that I can't delete the top CCCCCCCCCCCCCCCCCCCCCC folder. If I put it in the Trash and tell the Finder to empty the trash, it does nothing. If I disclose the contents of the CCCCCCCCCCCCCCCCCCCCCC folder in the Trash (with the alt key), it only shows 44 levels. When you try to do a rm -r on the folder, it fails because "Too many open files in system". override rwxr-xr-x toto/staff for DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/ DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD/DDDDDDDDDDDDDDDDDDDDDD? I'm not especially interested by all the problems related to MAX_PATHLEN and sysctl max files but: [Q] Shouldn't there be a warning dialog in the Finder to report that the empty request failed? [Q] Isn't the "override rwxr-xr-x toto/staff" request a bug considering the request is not made for a hierarchy with only 1 or 2 levels? This email sent to site_archiver(a)lists.apple.com

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Re: asl and the console
by Marc Majka 02 Jul '10

02 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com The simple answer is that Debug and Info level messages get filtered out. The longer answer is how this filtering works. There are filters in two places: on the client's side (your application) and on the server side (the syslogd daemon). syslogd receives log messages from various sources: from Libc (via the asl(3) and syslog(3) APIs), from the kernel, and - if the UDP listener port is enabled - from network sources. The server filters and files messages by following the rules in two different configuration files: /etc/syslog.conf and /etc/asl.conf. /etc/syslog.conf is the "legacy" BSD syslog configuration file. It has lines that match facility names and levels. If a message matches the facility and level on the line, the message is formatted in a standard way and written out to a specified flat file. There are also configuration lines that will send matching messages to specified network addresses (and optional UDP port numbers), or that will write to ttys of all or selected users. The /etc/asl.conf file specifies additional rules for processing messages. Most of the lines in the file are pattern matching rules that determine whether received messages will be saved in the ASL data store. The data store is what you see in the "DATABASE SEARCHES" section of Console.app, and what you see when you run the "syslog" command-line utility. If you are not seeing Debug or Info level messages when you run Console (or use "syslog"), then it's because those messages are not getting saved in the ASL data store. Why? One reason is that the /etc/asl.conf file may be screening them out. Indeed: if you read through the file, you'll see: # save kernel [PID 0] and launchd [PID 1] messages ? [<= PID 1] store # save everything from emergency to notice ? [<= Level notice] store # save lpr info level and above ? [<= Level info] [= Facility lpr] store # save all mail, ftp, local0, and local1 messages ? [= Facility mail] store ? [= Facility ftp] store ? [= Facility local0] store ? [= Facility local1] store Kernel and launchd messages all get saved. Everything from Info to Emergency from the "lpr" facility gets saved. All messages from mail, ftp, local0, and local1 facilities get saved. For everything else, only Notice to Emergency gets saved - Info and Debug messages get filtered out. We set this up as the default because there are just *way* too many Info and Debug messages. Saving them all fills up disk space too fast, and you have to remember that most of Apple's customers are not really all that techie. Saving all messages would largely just be a waste of energy and disk space. So, it you want to see all those Info and Debug level messages in Console, then it is necessary* (but not sufficient - see below) to change the config file. Assuming you might want to change the settings back to the original some day, you could just change that main line from ? [<= Level notice] store to ? [<= Level debug] store However, you can tailor the rules to meet your needs. The asl.conf man page tells you how. When I said it was not sufficient to just change the asl.conf file, that's because it only controls whether syslogd saves the messages that it *receives* from clients. There's also filtering in the client-side library code (in Libc) that determines whether or not your process *sends* messages to syslogd. If your client doesn't send it, it won't end up in the data store! The asl(3) and syslog(3) library both contain API for setting a client-side filter. The filter is a bitmask of message levels. If the bit corresponding to a level is set, the library sends the message to syslogd. If it is zero, the library just drops the message. The default for the syslog(3) API is to do no filtering - all messages are passed to syslogd. The default for the asl(3) API is to filter out ASL_LEVEL_INFO and ASL_LEVEL_DEBUG. Aha! If you are using asl_log(), you need to make some adjustments. If you want to change the client filter in your own code, you can set it using asl_set_filter(). See the asl(3) man page. It's very similar to the setlogmask() API in the syslog(3) library. * I've saved the best for last. It's not always necessary to change the asl.conf file. There's one more way to control the filtering for a particular application, although it only works while that process is running. There's a remote-control mechanism that you can use to adjust filtering "on-the-fly". For example, if you want all messages from the application named "MyApp" to get saved in the ASL data store, then you can do: syslog -c MyApp -d See the syslog(1) man page for specifics, but briefly, this overrides the Library-code bit mask with a remote-control bitmask. "-d" means "everything from emergency to debug". A great feature of this remote-control mechanism is that it also causes messages from your process to tunnel through any filtering that's in place for the ASL data store. So, if you are debugging your application, just set the remote-control mask using "syslog -c", and it just works! Messages send by your process will all get saved in the data store and appear in Console, even if you still have server-side filtering in /etc/asl.conf. This "tunneling" behavior persists until the process exits,. or you turn it off, e.g.: syslog -c MyApp off Final detail: there are actually two remote-control filters. Not only are there per-process remote control filters, but there is a global filter that applies to ALL running processes. The global, or "master" filter as it is sometimes called in the man pages, is normally "off", just like all the per-process remote control filters. If you really want to see a lot of messages, you could set the global bitmask to allow all messages: syslog -c 0 -d or, alternatively, if you wanted to tell all processes to stop logging anything except Emergency and Alert level messages: syslog -c -0 pa See the syslog(1) man page for details. As with the per-process filter, messages sent from processes which are under control of the global filter will tunnel through /etc/asl.conf filtering. OK, really the final detail: If you enable the global filter, it overrides the Libc (asl_set_filter or setlogmask) bitmask. However, the per-process remote-control overrides both. So you could, for example, get all processes to log very verbosely, but then tell particular processes to cut down to Emergency to Error: syslog -c 0 -d syslog -c LoudMouth -e or you might want to tell everyone to be quite except for your own application: syslog -c 0 p syslog -c MyApp -d In practice, the global / "master" filter is really not that useful, but it's part of what goes on in the client code. Hope this helps! -- Marc Majka > Hello, > > I did not find any list that looked more appropriate, so I am trying my luck here... > > When my App is sending messages with asl_log(3) , I only see messages in the Console between the levels of ASL_LEVEL_NOTICE and ASL_LEVEL_EMERG. So far, so good. Normal users should not be swamped with messages of level ASL_LEVEL_INFO or ASL_LEVEL_DEBUG. > > But how can I as a developer, or even a user, query the console in such a way that these levels are included? I tried setting up a little query in the Console.app GUI, but still, I got nothing less important than Notice. > > I have also tried to RTFM if I can do it in the command line, but did not see anything. > > Am I doing something wrong? Did I miss something? > > Thanks > > Alex > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/darwin-dev/majka%40apple.com > > This email sent to majka(a)apple.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: asl and the console
by Greg Parker 02 Jul '10

02 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Jul 2, 2010, at 8:07 AM, Alexander von Below wrote: > When my App is sending messages with asl_log(3) , I only see messages in the Console between the levels of ASL_LEVEL_NOTICE and ASL_LEVEL_EMERG. So far, so good. Normal users should not be swamped with messages of level ASL_LEVEL_INFO or ASL_LEVEL_DEBUG. > > But how can I as a developer, or even a user, query the console in such a way that these levels are included? I tried setting up a little query in the Console.app GUI, but still, I got nothing less important than Notice. ASL has two points that filter out low-priority logs: the client side and the server side. Any log must pass both filters in order to be saved. Logs caught by these filters are thrown away. On the client side, you can use asl_set_filter() to allow low-priority logs to go out. The default filter drops INFO and DEBUG. On the server side, you can use `syslog -c` to manipulate the server-side filters. There are several filters on the server side. I don't know what the defaults are there. -- Greg Parker gparker(a)apple.com Runtime Wrangler _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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asl and the console
by Alexander von Below 02 Jul '10

02 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Hello, I did not find any list that looked more appropriate, so I am trying my luck here... When my App is sending messages with asl_log(3) , I only see messages in the Console between the levels of ASL_LEVEL_NOTICE and ASL_LEVEL_EMERG. So far, so good. Normal users should not be swamped with messages of level ASL_LEVEL_INFO or ASL_LEVEL_DEBUG. But how can I as a developer, or even a user, query the console in such a way that these levels are included? I tried setting up a little query in the Console.app GUI, but still, I got nothing less important than Notice. I have also tried to RTFM if I can do it in the command line, but did not see anything. Am I doing something wrong? Did I miss something? Thanks Alex _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… This email sent to site_archiver(a)lists.apple.com

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Re: Programmatically turn caps-lock off
by Jonas Maebe 01 Jul '10

01 Jul '10

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com User-agent: Internet Messaging Program (IMP) H3 (4.3.4) Markus Hanauska wrote on Thu, 01 Jul 2010: Jonas ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.app… E.g. if this is something that can only be done from within the kernel, possibly by a kernel extension, let me know and I'll take it to the correct list. Afaik, it's indeed only possible via the kernel. You can have a look at Keyremap4Macbook, which installs a kernel extension, for some ideas: http://pqrs.org/macosx/keyremap4macbook They have a separate kernel extension for remapping the capslock key (see the "CapsLock" tab on the site), because apparently this requires patching the keyboard driver. This email sent to site_archiver(a)lists.apple.com

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