Quoting Cyrill Gorcunov ([email protected]): > To eliminate code duplication lets introduce check_data_rlimit > helper which we will use in brk() and prctl() syscalls. > > v2 (serge.hallyn@): > - need to check against RLIM_INFINITY rather than RLIMIT_DATA > > Signed-off-by: Cyrill Gorcunov <[email protected]> > Cc: Kees Cook <[email protected]> > Cc: Tejun Heo <[email protected]> > Cc: Andrew Morton <[email protected]> > Cc: Andrew Vagin <[email protected]> > Cc: Eric W. Biederman <[email protected]> > Cc: H. Peter Anvin <[email protected]> > Cc: Serge Hallyn <[email protected]>
Acked-by: Serge Hallyn <[email protected]> > Cc: Pavel Emelyanov <[email protected]> > Cc: Vasiliy Kulikov <[email protected]> > Cc: KAMEZAWA Hiroyuki <[email protected]> > Cc: Michael Kerrisk <[email protected]> > Cc: Julien Tinnes <[email protected]> > --- > include/linux/mm.h | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > Index: linux-2.6.git/include/linux/mm.h > =================================================================== > --- linux-2.6.git.orig/include/linux/mm.h > +++ linux-2.6.git/include/linux/mm.h > @@ -18,6 +18,7 @@ > #include <linux/pfn.h> > #include <linux/bit_spinlock.h> > #include <linux/shrinker.h> > +#include <linux/resource.h> > > struct mempolicy; > struct anon_vma; > @@ -1780,6 +1781,20 @@ extern struct vm_area_struct *copy_vma(s > bool *need_rmap_locks); > extern void exit_mmap(struct mm_struct *); > > +static inline int check_data_rlimit(unsigned long rlim, > + unsigned long new, > + unsigned long start, > + unsigned long end_data, > + unsigned long start_data) > +{ > + if (rlim < RLIM_INFINITY) { > + if (((new - start) + (end_data - start_data)) > rlim) > + return -ENOSPC; > + } > + > + return 0; > +} > + > extern int mm_take_all_locks(struct mm_struct *mm); > extern void mm_drop_all_locks(struct mm_struct *mm); > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
