site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com Carl Smith writes:

Ah I see, said the blind man. Thanks Quinn, understand the concept a little more.

Ok so I ran the % find /System/Library/Extensions/System.kext/PlugIns \ -type f -a ! -name "*.plist" | xargs nm | grep strcmp

and I get back: U _strcmp U _strcmp U _strcmp

How does this tell me which KPI exports the symbol, I thought I was looking for something like, "com.apple.kernel.libkern" and so on?

Try adding -o to nm. Eg: % find /System/Library/Extensions/System.kext/PlugIns -type f -a ! -name "*.plist" | xargs nm -o | grep strncmp /System/Library/Extensions/System.kext/PlugIns/Libkern.kext/Libkern: U _strncmp /System/Library/Extensions/System.kext/PlugIns/Mach.kext/Mach: U _strncmp /System/Library/Extensions/System.kext/PlugIns/System6.0.kext/kernel.6.0: U _strncmp Note the "U", which means it is importing the symbol...

From some discussions I had off-list, these files generally contain imported symbols which they also re-export. But not always, and there isn't a 100% bullet proof way to figure out which "fake" kext supplies which symbols.

Also when I use strcmp, as my code is now, I get a warning of "implicit declaration of function 'strcmp'". Do I have to add the "#include string.h" to my file or does this have to do with adding the correct bundle identifier?

Compilation warnings like that refer to missing headers, so yes, add string.h. Problems with your info.plist file are usually linking errors and module load time. Drew _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com