> > Author: eadler > > Date: Sat Jun 2 22:06:27 2018 > > New Revision: 334543 > > URL: https://svnweb.freebsd.org/changeset/base/334543 > > > > Log: > > top(1): chdir to / as init; remove unneeded comment > > > > - chdir to / to allow unmounting of wd > > - remove warning about running top(1) as setuid. If this is a concern we > > should just drop privs instead. > > > > Modified: > > head/usr.bin/top/machine.c > > head/usr.bin/top/top.c > > > > Modified: head/usr.bin/top/machine.c > > ============================================================================== > > --- head/usr.bin/top/machine.c Sat Jun 2 21:50:00 2018 > > (r334542) > > +++ head/usr.bin/top/machine.c Sat Jun 2 22:06:27 2018 > > (r334543) > > @@ -1613,11 +1613,6 @@ compare_ivcsw(const void *arg1, const void *arg2) > > /* > > * proc_owner(pid) - returns the uid that owns process "pid", or -1 if > > * the process does not exist. > > - * It is EXTREMELY IMPORTANT that this function work correctly. > > - * If top runs setuid root (as in SVR4), then this function > > - * is the only thing that stands in the way of a serious > > - * security problem. It validates requests for the "kill" > > - * and "renice" commands. > > */ > > > > int > > > > Modified: head/usr.bin/top/top.c > > ============================================================================== > > --- head/usr.bin/top/top.c Sat Jun 2 21:50:00 2018 (r334542) > > +++ head/usr.bin/top/top.c Sat Jun 2 22:06:27 2018 (r334543) > > @@ -260,6 +260,15 @@ main(int argc, char *argv[]) > > #define CMD_order 26 > > #define CMD_pid 27 > > > > + /* > > + * Since top(1) is often long running and > > + * doesn't typically care about where its running from > > + * chdir to the root to allow unmounting of its > > + * originall wd. Failure is alright as this is > > + * just a courtesy for users. > > + */ > > + chdir("/"); > > + > > Bad side effect of doing that is it is not hard to get a "core" ^^^ now > from top when run as a user, as it is going to try to write > to /, and it probably does not have permission for that. > > Better might be a cd to /tmp, or /var/tmp, which are usually > hard to unmount for these reasons anyway. > > > /* set the buffer for stdout */ > > #ifdef DEBUG > > extern FILE *debug; > > > > > > -- > Rod Grimes rgri...@freebsd.org > >
-- Rod Grimes rgri...@freebsd.org _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
