March 2009 - Darwin-dev - lists.apple.com

getpwnam() restricted in a chrooted environment?
by Axel Rau 10 Mar '09

10 Mar '09

site_archiver(a)lists.apple.com Delivered-To: Darwin-dev(a)lists.apple.com Hi all, Is getpwnam() restricted some how in a chrooted environment? Any help greatly appreciated, Axel --- ar3 _______________________________________________ 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… while installing hylafax 5.2.8 on darwin 9, getpwnam fails on the chrooted server. The relevant function is: ------------- void UUCPLock::setupIDs() { if (UUCPuid == (uid_t) -1) { const passwd *pwd = getpwnam("uucp"); if (!pwd) faxApp::fatal("Can not deduce identity of UUCP"); UUCPuid = pwd->pw_uid; UUCPgid = pwd->pw_gid; endpwent(); // paranoia } } ------------- Putting the code in a small c-program, it runs as expected. This email sent to site_archiver(a)lists.apple.com

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Re: Query on program counters range
by Jean-Daniel Dupas 10 Mar '09

10 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 10 mars 09 à 16:21, Arnab Ganguly a écrit : _______________________________________________ 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… Hi All, Not sure whether it is being posted in correct group. Is it possible to get the range of stack addresses of a particular application, to be more specific I would like to know the range of Program counters that we get when application crashes. Thanks in advance -A AFAK, program counter and stack address are not related. The PC can be any executable memory address (which include all shared libraries' __text sections and also any heap allocated memory block which is implicitly executable on i386, and can be explicitly set executable on x86_64). This email sent to site_archiver(a)lists.apple.com

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Query on program counters range
by Arnab Ganguly 10 Mar '09

10 Mar '09

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:date:message-id:subject :from:to:content-type; bh=vH9qfv2MdN4LJhFRHIcXy46qlPMXhG29k9mKr4ZOMuU=; b=cxctdywoKV+fQPunEZCeD/0RxYCRFKotZckCccosrqXlaDyA3ijzUA792914Ogfbrc SnkVgmZz4h2kaboAGLGrqBEDa7MCkGflzxOkN4Um/l1MWXGoARFDltDR2A6eQ7DDaPUl UqPjuM7BZDr4c2QFFZ0PO687q+twoHxklPfsk= Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=QPWSJJ0LPQyA4A2WrUR1hIGzMyjijzkZEwgX3Mx6ZS0DM3thnkGJf9Yz81x/DobWwy /jHkvPHph4JvYlapj147skIgha9C9mS2YxA8TOroGV2o7ZFfc2grPkSlNxWfynAf/bBP gLvivHLd+vEFhiE51Cq08ZMGG/GS5SXvXqLmM= _______________________________________________ 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: loading agent with launchd gets Bus Error
by Rick Mann 09 Mar '09

09 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Mar 9, 2009, at 14:37:13, Damien Sorresso wrote: :-) -- Rick _______________________________________________ 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… You may have a library dependency in your program that isn't being satisfied when run outside of the Xcode/debugging environment then. I have no dependencies at all, apart from the default set up by the Xcode template. This is a bare-bones project to test the various launching/quitting/log-in/log-out/crash behaviors. It links against Cocoa.framework, AppKit, CoreData, Foundation. "LimitLoadToSessionType" says "Don't load this job in any session but Aqua". By default, launchctl wants to load things into the Background session, so you specify "-S Aqua" to say, explicitly, "Load this into the Aqua session". I know it's confusing, and I sincerely apologize for it. Heh, thanks. You can make it up to me by giving me a programmatic API for launchctl (none of this fork/execv stuff). This email sent to site_archiver(a)lists.apple.com

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Re: loading agent with launchd gets Bus Error
by Rick Mann 09 Mar '09

09 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com On Mar 9, 2009, at 14:23:06, Damien Sorresso wrote: I can't find a ZeroLink setting (of any kind) in my projects. Any ideas what I'm doing wrong? TIA! My plist looks like this (after launchctl unformatted it): -- Damien Sorresso BSD Engineering Apple Inc. -- Rick _______________________________________________ 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… On Mar 9, 2009, at 2:12 PM, Rick Mann wrote: If I let launchd launch my user agent, (via .plist file in ~/ Library/LaunchAgents), I get a Bus Error, even if all I do is call NSLog() from main and then return. I notice that you're loading a debug build of your program. You don't by chance have ZeroLink enabled or something like that, do you? Also, load or load -w result in "nothing to load" from launchctl. Try `launchctl load -S Aqua <PathToPlist>`. That worked! It loaded and launched just fine. I'm confused, since I specify Aqua in the .plist. If I launch my agent from the command line or from Xcode, it seems to run fine. It has LSUIElement set to true in it's Info.plist. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd "> <plist version="1.0"> <dict> <key>KeepAlive</key> <true/> <key>Label</key> <string>com.test.test</string> <key>LimitLoadToSessionType</key> <string>Aqua</string> <key>Program</key> <string>/Users/rmann/Desktop/TestAgents/build/Debug/TestAgents.app/ Contents/Resources/Agent.app/Contents/MacOS/Agent</string> </dict> </plist> This email sent to site_archiver(a)lists.apple.com

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Re: loading agent with launchd gets Bus Error
by Damien Sorresso 09 Mar '09

09 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Try `launchctl load -S Aqua <PathToPlist>`. Any ideas what I'm doing wrong? TIA! My plist looks like this (after launchctl unformatted it): -- Damien Sorresso BSD Engineering Apple Inc. _______________________________________________ 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 On Mar 9, 2009, at 2:12 PM, Rick Mann wrote: If I let launchd launch my user agent, (via .plist file in ~/Library/ LaunchAgents), I get a Bus Error, even if all I do is call NSLog() from main and then return. I notice that you're loading a debug build of your program. You don't by chance have ZeroLink enabled or something like that, do you? Also, load or load -w result in "nothing to load" from launchctl. If I launch my agent from the command line or from Xcode, it seems to run fine. It has LSUIElement set to true in it's Info.plist. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd "> <plist version="1.0"> <dict> <key>KeepAlive</key> <true/> <key>Label</key> <string>com.test.test</string> <key>LimitLoadToSessionType</key> <string>Aqua</string> <key>Program</key> <string>/Users/rmann/Desktop/TestAgents/build/Debug/TestAgents.app/ Contents/Resources/Agent.app/Contents/MacOS/Agent</string> </dict> </plist> smime.p7s

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loading agent with launchd gets Bus Error
by Rick Mann 09 Mar '09

09 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Also, load or load -w result in "nothing to load" from launchctl. Any ideas what I'm doing wrong? TIA! My plist looks like this (after launchctl unformatted it): -- Rick _______________________________________________ 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… If I let launchd launch my user agent, (via .plist file in ~/Library/ LaunchAgents), I get a Bus Error, even if all I do is call NSLog() from main and then return. If I launch my agent from the command line or from Xcode, it seems to run fine. It has LSUIElement set to true in it's Info.plist. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd "> <plist version="1.0"> <dict> <key>KeepAlive</key> <true/> <key>Label</key> <string>com.test.test</string> <key>LimitLoadToSessionType</key> <string>Aqua</string> <key>Program</key> <string>/Users/rmann/Desktop/TestAgents/build/Debug/TestAgents.app/ Contents/Resources/Agent.app/Contents/MacOS/Agent</string> </dict> </plist> This email sent to site_archiver(a)lists.apple.com

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Re: Code-signing broken?
by Damien Sorresso 06 Mar '09

06 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.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 On Mar 6, 2009, at 9:53 AM, Tim Murison wrote: The code-signature still passes. So, my question is WTF? Scratch that... I got myself confused. If I add stuff to the end of the file, the signature passes. You can't modify the code segment and keep a valid signature though. When signing a fat Mach file, each architecture is signed independently. So you could use lipo to thin a fat Mach file, which is certainly a massive change, and the remaining architectures' code signatures would still validate. -- Damien Sorresso BSD Engineering Apple Inc. smime.p7s

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Re: Code-signing broken?
by Jean-Daniel Dupas 06 Mar '09

06 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Le 6 mars 09 à 18:53, Tim Murison a écrit : I think codesign signs only the __text section of the Mach-O binary. _______________________________________________ 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 code-signature still passes. So, my question is WTF? Scratch that... I got myself confused. If I add stuff to the end of the file, the signature passes. You can't modify the code segment and keep a valid signature though. If you want detailed anwsers about codesign, the apple-cdsa mailing list will be more appropriate. This email sent to site_archiver(a)lists.apple.com

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Re: Code-signing broken?
by Tim Murison 06 Mar '09

06 Mar '09

site_archiver(a)lists.apple.com Delivered-To: darwin-dev(a)lists.apple.com Thread-index: AcmefSB+h61AOV8hWUKFuBlWddxtOQAB0798 Thread-topic: Code-signing broken? User-agent: Microsoft-Entourage/12.15.0.081119 > The code-signature still passes. So, my question is WTF? Scratch that... I got myself confused. If I add stuff to the end of the file, the signature passes. You can't modify the code segment and keep a valid signature though. _______________________________________________ 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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