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<blockquote data-quote="dr_springfield" data-source="post: 47625">kernel programmingTrying to get my kext to write to a file... does anyone know how to do this?&nbsp; I've discovered I can only use the headers in the Kernel framework, and sys/fcntl.h should be able to open up a file at least, but I can't seem to get it to be recognized by the compiler (I include it and I get an error that open is undeclared, as well as write and close).This should be entirely possible (but I don't know).&nbsp; I know I can write to the syslog with printf, but this isn't the desired behavior.&nbsp; Thanks for any help.dr_springfieldEdit: well, problem not really solved.&nbsp; If anyone know what's wrong with this, please let me know, because it causes kernel panics and I can't figure it out:char pathBuf[]=&quot;/my_dir&quot;;struct nameidata *ndp=(struct nameidata*)_MALLOC(sizeof(struct nameidata),M_FREE,M_WAITOK);&nbsp; &nbsp; &nbsp; &nbsp; NDINIT(ndp,CREATE,LOCKLEAF,UIO_USERSPACE,pathBuf,current_proc());error = namei(ndp);printf(&quot;namei returns %u\n&quot;,error);</blockquote>

[QUOTE="dr_springfield, post: 47625"] [b]kernel programming[/b] Trying to get my kext to write to a file... does anyone know how to do this? I've discovered I can only use the headers in the Kernel framework, and sys/fcntl.h should be able to open up a file at least, but I can't seem to get it to be recognized by the compiler (I include it and I get an error that open is undeclared, as well as write and close). This should be entirely possible (but I don't know). I know I can write to the syslog with printf, but this isn't the desired behavior. Thanks for any help. dr_springfield Edit: well, problem not really solved. If anyone know what's wrong with this, please let me know, because it causes kernel panics and I can't figure it out: char pathBuf[]="/my_dir"; struct nameidata *ndp=(struct nameidata*)_MALLOC(sizeof(struct nameidata),M_FREE,M_WAITOK); NDINIT(ndp,CREATE,LOCKLEAF,UIO_USERSPACE,pathBuf,current_proc());error = namei(ndp); printf("namei returns %u\n",error); [/QUOTE]

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