> This flag PF_SUPERPRI, indicates used superuser privileges and not use > superuser privileges. I get it. This is really a misunderstanding. Thanks a lot. 2011/9/8 rohan puri <rohan.puri15@xxxxxxxxx>: > Hi, > > When forking a child process, the copy_process() function will by > default clear the PF_SUPERPRIV flag, which indicates whether a process > use superuser privileges. That means a superuser process will create > a child process does not has superuser privileges. I think the child > process of a superuser process should also be a superuser one, while > the child process of a normal process by default should also be a > normal one (except that the setuid bit of the child executable is turn > on). In both cases it is not necessary that the PF_SUPERPRIV flag to > be cleared. So, I wonder why the PF_SUPERPRIV flag is cleared by > defult. > > > Hi, > > This flag PF_SUPERPRI, indicates used superuser privileges and not use > superuser privileges. Which in any case, INDEPENDENT of all the processes > which have superuser privileges, whether they had used them or not and for > those processes which do not have superuser privileges needs to be cleared > for the child of them (since the child process has been just created and at > this point in time it has not used the superuser privileges) Its a kind of > initialization you can think of. > > Regards, > Rohan. > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
