consolidate BINPRM_FLAGS_ENFORCE_NONDUMP handling
new helper: would_dump(bprm, file). Checks if we are allowed to
read the file and if we are not - sets ENFORCE_NODUMP. Exported,
used in places that previously open-coded the same logics.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 8845613..fd88a39 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -111,6 +111,7 @@
extern int search_binary_handler(struct linux_binprm *, struct pt_regs *);
extern int flush_old_exec(struct linux_binprm * bprm);
extern void setup_new_exec(struct linux_binprm * bprm);
+extern void would_dump(struct linux_binprm *, struct file *);
extern int suid_dumpable;
#define SUID_DUMP_DISABLE 0 /* No setuid dumping */