On 5/18/20 7:33 PM, Eric W. Biederman wrote: > > Most of the support for passing the file descriptor of an executable > to an interpreter already lives in the generic code and in binfmt_elf. > Rework the fields in binfmt_elf that deal with executable file > descriptor passing to make executable file descriptor passing a first > class concept. I was reading this to try to figure out how to do execve(NULL, argv[], envp) to re-exec self after a vfork() in a chroot with no /proc, and hit the most trivial quibble ever: > --- a/fs/exec.c > +++ b/fs/exec.c > @@ -1323,7 +1323,10 @@ int begin_new_exec(struct linux_binprm * bprm) > */ > set_mm_exe_file(bprm->mm, bprm->file); > > + /* If the binary is not readable than enforce mm->dumpable=0 */ then Rob
