int attr_cache_add(struct file_stat *st)
{
assert(st->ino != 0);
struct file_stat *old = attr_cache_lookup(st->ino);
if (old){
/*if (st->parent_ino == FS_VROOT_INO) //split 后的*/
old->size = st->size;
old->mode = st->mode;
old->pos_arr[0] = st ->pos_arr[0];
old->pos_arr[1] = st ->pos_arr[1];
old->name = strdup(st->name);
old->version = cluster_get_current_version();
log_file_stat("attr_cache update instead insert !", old);
}else{
assert(st->parent_ino != 0);
st->version = cluster_get_current_version();
hashtable_insert(attr_ht, &(st->ino), st);
log_file_stat("attr_cache_ inserted: ", st);
}
return 0;
}
int git_attr_cache__get(
git_attr_file **out,
git_repository *repo,
git_attr_session *attr_session,
git_attr_file_source source,
const char *base,
const char *filename,
git_attr_file_parser parser)
{
int error = 0;
git_attr_cache *cache = git_repository_attr_cache(repo);
git_attr_file_entry *entry = NULL;
git_attr_file *file = NULL, *updated = NULL;
if ((error = attr_cache_lookup(
&file, &entry, repo, attr_session, source, base, filename)) < 0)
return error;
/* load file if we don't have one or if existing one is out of date */
if (!file || (error = git_attr_file__out_of_date(repo, attr_session, file)) > 0)
error = git_attr_file__load(&updated, repo, attr_session, entry, source, parser);
/* if we loaded the file, insert into and/or update cache */
if (updated) {
if ((error = attr_cache_upsert(cache, updated)) < 0)
git_attr_file__free(updated);
else {
git_attr_file__free(file); /* offset incref from lookup */
file = updated;
}
}
/* if file could not be loaded */
if (error < 0) {
/* remove existing entry */
if (file) {
attr_cache_remove(cache, file);
git_attr_file__free(file); /* offset incref from lookup */
file = NULL;
}
/* no error if file simply doesn't exist */
if (error == GIT_ENOTFOUND) {
giterr_clear();
error = 0;
}
}
*out = file;
return error;
}
static int corefs_getattr(const char *path, struct stat *stbuf)
{
int res;
// if we're not caching attributes or cache fails do the syscall.
if ((! g_msp->cache_attr) || (! attr_cache_lookup(path, stbuf))) {
res = mop.getattr(path, stbuf);
if(res < 0)
return res;
if (g_msp->cache_attr) attr_cache_store(path, stbuf);
}
if (g_msp->spoof_uids) stbuf->st_uid=getuid();
if (g_msp->spoof_gids) stbuf->st_gid=getgid();
if (g_msp->spoof_perms) {
stbuf->st_mode &= 0770000; // preserve directory, symlink, etc bits
stbuf->st_mode |= g_msp->spoof_permbits; // add back in user bits
}
return 0;
}
