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SELinux was sometimes using the task "objective" credentials when it could/should use the "subjective" credentials. This was sometimes hidden by the fact that we were unnecessarily passing around pointers to the current task, making it appear as if the task could be something other than current, so eliminate all such passing of current. Inline various permission checking helper functions that can be reduced to a single avc_has_perm() call. Since the credentials infrastructure only allows a task to alter its own credentials, we can always assume that current must be the same as the target task in selinux_setprocattr after the check. We likely should move this check from selinux_setprocattr() to proc_pid_attr_write() and drop the task argument to the security hook altogether; it can only serve to confuse things. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <paul@paul-moore.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.