From c2788174198632e0c8bdbfa7762081f595460bdf Mon Sep 17 00:00:00 2001 From: Jon Santmyer Date: Tue, 29 Sep 2026 12:53:57 -0400 Subject: move process code into proc. add panic folder --- sys/link.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'sys/link.c') diff --git a/sys/link.c b/sys/link.c index 592fe8f..45c118a 100644 --- a/sys/link.c +++ b/sys/link.c @@ -1,6 +1,8 @@ #include "link.h" #include "arch/x86_64/hal/obj.h" #include "hal/memory.h" +#include "lib/printf.h" +#include "jove.h" uint8_t link_gettype(jove_owned_obj_t *obj) @@ -57,6 +59,27 @@ link_try_traverse(jove_owned_obj_t *link, lockstack_t *lockstack) return perm_obj; } +jove_perm_obj_t +link_try_traverse_objdir(jove_owned_obj_t *objdir, lockstack_t *lockstack, + size_t pathlen, objpath_part_t *path) +{ + /*Do a traversal through the passed objdir to get objdir permissions.*/ + jove_perm_obj_t perm_obj = link_try_traverse(objdir, lockstack); + if(perm_obj.obj == 0) return perm_obj; + if(pathlen == 0) return perm_obj; + + /*Get the object pointed to by the head of the path. */ + perm_obj.obj = lockstack_push(lockstack, objdir_trygetlocal(perm_obj.obj, path[0])); + if(pathlen > 1) lockstack_pop(lockstack); /*Don't lock the directory we're traversing. */ + + /*Recurse through the remaining path, resolving as we go. */ + jove_perm_obj_t traverse_obj = link_try_traverse_objdir(perm_obj.obj, lockstack, pathlen - 1, &path[1]); + + /*Mask permissions against the head object. */ + traverse_obj.permissions &= perm_obj.permissions; + return traverse_obj; +} + jove_owned_obj_t *link_new(jove_obj_t *tgt, jove_owned_obj_t *dst, uint16_t permissions) { struct obj_link *linkval = obj_deref(dst); -- cgit v1.2.3