/*
* kobj_load_file:
*
* Load an object located in the file system.
*/
int
kobj_load_file(kobj_t *kop, const char *filename, const char *base,
bool autoload)
{
struct nameidata nd;
kauth_cred_t cred;
char *path;
int error;
kobj_t ko;
cred = kauth_cred_get();
ko = kmem_zalloc(sizeof(*ko), KM_SLEEP);
if (ko == NULL) {
return ENOMEM;
}
if (autoload) {
error = ENOENT;
} else {
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, filename);
error = vn_open(&nd, FREAD, 0);
}
if (error != 0) {
if (error != ENOENT) {
goto out;
}
path = PNBUF_GET();
snprintf(path, MAXPATHLEN - 1, "%s/%s/%s.kmod", base,
filename, filename);
NDINIT(&nd, LOOKUP, FOLLOW | NOCHROOT, UIO_SYSSPACE, path);
error = vn_open(&nd, FREAD, 0);
if (error != 0) {
strlcat(path, ".o", MAXPATHLEN);
NDINIT(&nd, LOOKUP, FOLLOW | NOCHROOT, UIO_SYSSPACE,
path);
error = vn_open(&nd, FREAD, 0);
}
PNBUF_PUT(path);
if (error != 0) {
goto out;
}
}
out:
if (error != 0) {
kmem_free(ko, sizeof(*ko));
return error;
}
ko->ko_type = KT_VNODE;
ko->ko_source = nd.ni_vp;
*kop = ko;
return kobj_load(ko);
}
/*
* kobj_load_mem:
*
* Load an object already resident in memory. If size is not -1,
* the complete size of the object is known.
*/
int
kobj_load_mem(kobj_t *kop, void *base, ssize_t size)
{
kobj_t ko;
ko = kmem_zalloc(sizeof(*ko), KM_SLEEP);
if (ko == NULL) {
return ENOMEM;
}
ko->ko_type = KT_MEMORY;
ko->ko_source = base;
ko->ko_memsize = size;
*kop = ko;
return kobj_load(ko);
}
/*
* kobj_load_vfs:
*
* Load an object located in the file system.
*/
int
kobj_load_vfs(kobj_t *kop, const char *path, const bool nochroot)
{
struct nameidata nd;
struct pathbuf *pb;
kauth_cred_t cred;
int error;
kobj_t ko;
KASSERT(path != NULL);
if (strchr(path, '/') == NULL)
return ENOENT;
cred = kauth_cred_get();
ko = kmem_zalloc(sizeof(*ko), KM_SLEEP);
if (ko == NULL) {
return ENOMEM;
}
pb = pathbuf_create(path);
if (pb == NULL) {
kmem_free(ko, sizeof(*ko));
return ENOMEM;
}
NDINIT(&nd, LOOKUP, FOLLOW | (nochroot ? NOCHROOT : 0), pb);
error = vn_open(&nd, FREAD, 0);
if (error != 0) {
pathbuf_destroy(pb);
kmem_free(ko, sizeof(*ko));
return error;
}
ko->ko_type = KT_VNODE;
kobj_setname(ko, path);
ko->ko_source = nd.ni_vp;
ko->ko_read = kobj_read_vfs;
ko->ko_close = kobj_close_vfs;
pathbuf_destroy(pb);
*kop = ko;
return kobj_load(ko);
}
/*
* kobj_load_mem:
*
* Load an object already resident in memory. If size is not -1,
* the complete size of the object is known.
*/
int
kobj_load_mem(kobj_t *kop, const char *name, void *base, ssize_t size)
{
kobj_t ko;
ko = kmem_zalloc(sizeof(*ko), KM_SLEEP);
if (ko == NULL) {
return ENOMEM;
}
ko->ko_type = KT_MEMORY;
kobj_setname(ko, name);
ko->ko_source = base;
ko->ko_memsize = size;
ko->ko_read = kobj_read_mem;
ko->ko_close = kobj_close_mem;
*kop = ko;
return kobj_load(ko);
}