fix: kpm user interface

Author: bmax

kernel/patch/common/supercall.c

@@ -89,14 +89,15 @@ static long call_kpm_info(const char *__user uname, char *__user out_info, int o
 {
     if (out_len <= 0) return -EINVAL;
     char name[64];
-    char buf[1024];
+    char buf[2048];
     int len = strncpy_from_user_nofault(name, uname, sizeof(name));
     if (len <= 0) return -EINVAL;
     int sz = get_module_info(name, buf, sizeof(buf));
-    if (sz <= 0) return sz;
-    if (sz > out_len) return -ENOMEM;
+    if (sz < 0) return sz;
+    if (sz > out_len) return -ENOBUFS;
     sz = seq_copy_to_user(out_info, buf, sz);
-    return sz;
+    if (sz < 0) return sz;
+    return 0;
 }
 
 static long call_su(struct su_profile *__user uprofile)

kernel/patch/module/module.c

@@ -578,8 +578,10 @@ int get_module_info(const char *name, char *out_info, int size)
                       "version=%s\n"
                       "license=%s\n"
                       "author=%s\n"
-                      "description=%s\n",
-                      mod->info.name, mod->info.version, mod->info.license, mod->info.author, mod->info.description);
+                      "description=%s\n"
+                      "args=%s\n",
+                      mod->info.name, mod->info.version, mod->info.license, mod->info.author, mod->info.description,
+                      mod->args);
     logkfd("%s", out_info);
     return sz;
 }

user/kpm.c

@@ -39,7 +39,7 @@ int kpm_list(const char *key)
 
 int kpm_info(const char *key, const char *name)
 {
-    char buf[1024];
+    char buf[2048];
     int rc = sc_kpm_info(key, name, buf, sizeof(buf));
     if (rc > 0) {
         fprintf(stdout, "%s", buf);

version

@@ -1,3 +1,3 @@
 #define MAJOR 0
 #define MINOR 7
-#define PATCH 1
+#define PATCH 2