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#include <kernel/mem/alloc.h>
#include <kernel/vfs/mount.h>
#include <shared/mem.h>
struct vfs_mount *vfs_mount_seed(void) {
struct vfs_mount *mount = kmalloc(sizeof *mount);
struct vfs_backend *backend = kmalloc(sizeof *backend);
backend->type = VFS_BACK_ROOT;
*mount = (struct vfs_mount){
.prev = NULL,
.prefix = "",
.prefix_len = 0,
.backend = backend,
};
return mount;
}
struct vfs_mount *vfs_mount_resolve(
struct vfs_mount *top, const char *path, size_t path_len)
{
for (; top; top = top->prev) {
if (top->prefix_len > path_len)
continue;
if (memcmp(top->prefix, path, top->prefix_len) != 0)
continue;
/* ensure that there's no garbage after the match
* recognize that e.g. /thisasdf doesn't get recognized as mounted under
* /this */
if (top->prefix_len == path_len) // can't happen if prefix == path
break;
if (path[top->prefix_len] == '/')
break;
}
return top;
}
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