<div dir="ltr"><div><div><div></div>Here is the security part of the .config:<br><br>#<br># Security options<br>#<br>CONFIG_KEYS=y<br>CONFIG_PERSISTENT_KEYRINGS=y<br>CONFIG_BIG_KEYS=y<br># CONFIG_ENCRYPTED_KEYS is not set<br>CONFIG_KEYS_DEBUG_PROC_KEYS=y<br># CONFIG_SECURITY_DMESG_RESTRICT is not set<br>CONFIG_SECURITY=y<br>CONFIG_SECURITYFS=y<br>CONFIG_SECURITY_NETWORK=y<br>CONFIG_SECURITY_NETWORK_XFRM=y<br>CONFIG_SECURITY_PATH=y<br>CONFIG_INTEL_TXT=y<br># CONFIG_SECURITY_SELINUX is not set<br># CONFIG_SECURITY_SMACK is not set<br># CONFIG_SECURITY_TOMOYO is not set<br># CONFIG_SECURITY_APPARMOR is not set<br># CONFIG_SECURITY_YAMA is not set<br>CONFIG_SECURITY_HELLOWORLD=y<br># CONFIG_IMA is not set<br># CONFIG_EVM is not set<br>CONFIG_DEFAULT_SECURITY_HELLOWORLD=y<br># CONFIG_DEFAULT_SECURITY_DAC is not set<br>CONFIG_DEFAULT_SECURITY="helloworld"<br>CONFIG_CRYPTO=y<br><br><br></div><div>SELinux is not loading before my module. SELinux was working on the kernel that came with the distribution, did not try to build my kernel with it on. I will try to do so.<br></div><div><br></div>Thank you very much,<br></div>Thomas<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 19 January 2015 at 00:20, Dave Tian <span dir="ltr"><<a href="mailto:dave.jing.tian@gmail.com" target="_blank">dave.jing.tian@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word"><div><div>Did SELinux get loaded before your changes (Fedora uses SELinux by default)? Would you please post your security config? I still suspect that there was sth messed up in the config.</div><div><br></div><div>Thanks,</div><div>Dave</div><br>
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<br><div><blockquote type="cite"><div>On Jan 18, 2015, at 7:09 PM, Thomas F. J.-M. Pasquier <<a href="mailto:tfjmp2@cam.ac.uk" target="_blank">tfjmp2@cam.ac.uk</a>> wrote:</div><br><div>No, other LSM. Checked in the config file. The only one selected is mine and it is set "Default Security Module" when using menuconfig.<br><br><div class="gmail_quote">On Mon Jan 19 2015 at 12:07:33 AM Tian Dave <<a href="mailto:dave.jing.tian@gmail.com" target="_blank">dave.jing.tian@gmail.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Then which LSM was triggered? SELinux? You probably need to disable other LSM before making your LSM work.<div><br></div><div>Thanks,</div><div>Dave</div></div><div class="gmail_extra"><br><div class="gmail_quote">2015-01-18 18:49 GMT-05:00 Thomas F. J.-M. Pasquier <span dir="ltr"><<a href="mailto:tfjmp2@cam.ac.uk" target="_blank">tfjmp2@cam.ac.uk</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"></blockquote></div></div><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi everyone,<div><br></div><div>Kernel version 3.17.8<br><div><br></div><div>I am trying to build a skeleton LSM module, but I am not having much luck so far. The problem seems to be that the LSM init function is never called.</div><div><br></div><div>I am selecting my helloworld LSM when building the kernel and it is set as default (checked and re-checked in menuconfig + in the file).</div><div><br></div><div>The build is going fine (my module is built as I would expect). The rest of the building procedure goes fine. I reboot, the new image works just fine except my LSM is not in (nor any other, it seems, for that matter).</div><div><br></div><div>Here is the init function:</div><div><div>static __init int hw_init(void){</div><div><span style="white-space:pre-wrap"> </span>/* avoid security registration races */</div><div><span style="white-space:pre-wrap"> </span>if (!security_module_enable(&hw_<u></u>ops)){</div><div><span style="white-space:pre-wrap"> </span>printk(KERN_INFO "hw: Disabled at boot.\n");</div><div><span style="white-space:pre-wrap"> </span>return 0;</div><div><span style="white-space:pre-wrap"> </span>}</div><div><br></div><div><span style="white-space:pre-wrap"> </span>printk(KERN_INFO "hw: Initializing.\n");</div><div><br></div><div><span style="white-space:pre-wrap"> </span>if (register_security(&hw_ops))</div><div><span style="white-space:pre-wrap"> </span>panic("hw: Unable to register with kernel.\n");</div><div><span style="white-space:pre-wrap"> </span>else</div><div><span style="white-space:pre-wrap"> </span>printk(KERN_INFO "hw: registered with the kernel.\n");</div><div><br></div><div><span style="white-space:pre-wrap"> </span>return 0;</div><div>}</div><div><br></div><div>security_initcall(hw_init);</div></div><div><br></div><div>I looked at how it was done in SELinux and the other security module and I don't seem to be doing things differently or incorrectly. I checked the log level just in case and that's not the issue either.</div><div><br></div><div>I am tempted to say the problem come from my building procedure/configuration, rather than the module/code in itself (the dist on top of the kernel is fedora21). I have been at it for a while now and any help would be most welcomed.</div><div><br></div><div>Thank you in advance.</div><div><br></div><div>Regards,</div><div>Thomas</div><div><br></div><div><br></div></div>
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