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fileobj/devobj: record path name (originally by Takagi-san)

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This commit is contained in:
Balazs Gerofi
2018-04-13 15:14:53 +09:00
parent 249bda4aef
commit f3d18eb9de
5 changed files with 87 additions and 4 deletions
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16
kernel/fileobj.c
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@ -223,6 +223,18 @@ int fileobj_create(int fd, struct memobj **objp, int *maxprotp, uintptr_t virt_a
newobj->memobj.ops = &fileobj_ops;
newobj->memobj.flags = MF_HAS_PAGER | MF_REG_FILE;
newobj->handle = result.handle;
dkprintf("%s: path=%s\n", __FUNCTION__, result.path);
if (result.path[0]) {
newobj->memobj.path = kmalloc(PATH_MAX, IHK_MC_AP_NOWAIT);
if (!newobj->memobj.path) {
error = -ENOMEM;
kprintf("%s: error: allocating path\n", __FUNCTION__);
goto out;
}
strncpy(newobj->memobj.path, result.path, PATH_MAX);
}
newobj->sref = 1;
newobj->cref = 1;
fileobj_page_hash_init(newobj);
@ -434,6 +446,10 @@ static void fileobj_release(struct memobj *memobj)
kfree(to_memobj(free_obj)->pages);
}
if (to_memobj(free_obj)->path) {
kfree(to_memobj(free_obj)->path);
}
obj_list_remove(free_obj);
mcs_lock_unlock_noirq(&fileobj_list_lock, &node);
kfree(free_obj);