+/*
+ * LSD proc entry handlers
+ */
+static int lprocfs_wr_lsd_downcall(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct upcall_cache *cache = __mds_get_global_lsd_cache();
+ struct lsd_downcall_args param;
+ gid_t gids_local[NGROUPS_SMALL];
+ gid_t *gids = NULL;
+
+ if (count != sizeof(param)) {
+ CERROR("invalid data size %lu\n", count);
+ goto do_err_downcall;
+ }
+ if (copy_from_user(¶m, buffer, count)) {
+ CERROR("broken downcall\n");
+ goto do_err_downcall;
+ }
+
+ if (param.err) {
+ CERROR("LSD downcall indicate error %d\n", param.err);
+ goto do_downcall;
+ }
+
+ if (param.ngroups > NGROUPS_MAX) {
+ CERROR("%d groups too big\n", param.ngroups);
+ goto do_err_downcall;
+ }
+
+ if (param.ngroups <= NGROUPS_SMALL)
+ gids = gids_local;
+ else {
+ OBD_ALLOC(gids, param.ngroups * sizeof(gid_t));
+ if (!gids) {
+ CERROR("fail to alloc memory for %d gids\n",
+ param.ngroups);
+ goto do_err_downcall;
+ }
+ }
+ if (copy_from_user(gids, param.groups,
+ param.ngroups * sizeof(gid_t))) {
+ CERROR("broken downcall\n");
+ goto do_err_downcall;
+ }
+
+ param.groups = gids;
+
+do_downcall:
+ upcall_cache_downcall(cache, (__u64) param.uid, ¶m);
+
+ if (gids && gids != gids_local)
+ OBD_FREE(gids, param.ngroups * sizeof(gid_t));
+ return count;
+
+do_err_downcall:
+ param.err = -EINVAL;
+ goto do_downcall;
+}
+
+static int lprocfs_rd_lsd_expire(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ struct upcall_cache *cache= __mds_get_global_lsd_cache();
+
+ *eof = 1;
+ return snprintf(page, count, "%lu\n", cache->uc_entry_expire);
+}
+static int lprocfs_wr_lsd_expire(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct upcall_cache *cache= __mds_get_global_lsd_cache();
+ char buf[32];
+
+ if (copy_from_user(buf, buffer, min(count, 32UL)))
+ return count;
+ buf[31] = 0;
+ sscanf(buf, "%lu", &cache->uc_entry_expire);
+ return count;
+}
+
+static int lprocfs_rd_lsd_ac_expire(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct upcall_cache *cache= __mds_get_global_lsd_cache();
+
+ *eof = 1;
+ return snprintf(page, count, "%lu\n", cache->uc_acquire_expire);
+}
+static int lprocfs_wr_lsd_ac_expire(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct upcall_cache *cache= __mds_get_global_lsd_cache();
+ char buf[32];
+
+ if (copy_from_user(buf, buffer, min(count, 32UL)))
+ return count;
+ buf[31] = 0;
+ sscanf(buf, "%lu", &cache->uc_acquire_expire);
+ return count;
+}
+
+static int lprocfs_rd_lsd_upcall(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ struct upcall_cache *cache= __mds_get_global_lsd_cache();
+
+ *eof = 1;
+ return snprintf(page, count, "%s\n", cache->uc_upcall);
+}
+static int lprocfs_wr_lsd_upcall(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct upcall_cache *cache= __mds_get_global_lsd_cache();
+
+ if (count < UC_CACHE_UPCALL_MAXPATH) {
+ sscanf(buffer, "%1024s", cache->uc_upcall);
+ cache->uc_upcall[UC_CACHE_UPCALL_MAXPATH - 1] = 0;
+ }
+ return count;
+}
+
+extern void lgss_svc_cache_flush(__u32 uid);
+static int lprocfs_wr_lsd_flush(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ char buf[32];
+ __u32 uid;
+
+ if (copy_from_user(buf, buffer, min(count, 32UL)))
+ return count;
+ buf[31] = 0;
+ sscanf(buf, "%d", &uid);
+
+ mds_flush_lsd(uid);
+#ifdef ENABLE_GSS
+ lgss_svc_cache_flush(uid);
+#endif
+ return count;
+}
+