[Libguestfs] [PATCH 2/3] lib: inspect: split limits of package manager files

[Pino Toscano]

Use different defines for the limits of the package manager files
downloaded during the inspection of applications.  This way it will be
possible to tweak each of them without affecting the others.

This is a minor refactoring, with no behaviour change.
---
 lib/inspect-apps.c | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/lib/inspect-apps.c b/lib/inspect-apps.c
index d0bb340da..3441b4b94 100644
--- a/lib/inspect-apps.c
+++ b/lib/inspect-apps.c
@@ -47,12 +47,18 @@
 
 /* Some limits on what the inspection code will read, for safety. */
 
-/* Maximum RPM or dpkg database we will download to /tmp.  RPM
- * 'Packages' database can get very large: 70 MB is roughly the
- * standard size for a new Fedora install, and after lots of package
- * installation/removal I have seen well over 100 MB databases.
+/* Maximum RPM 'Packages' file we will download to /tmp.  This file
+ * can get very large: 70 MB is roughly the standard size for a new
+ * Fedora install, and after lots of package installation/removal
+ * I have seen well over 100 MB databases.
  */
-#define MAX_PKG_DB_SIZE       (300 * 1000 * 1000)
+#define MAX_RPM_PACKAGES_SIZE          (300 * 1000 * 1000)
+/* Maximum RPM 'Name' file we will download to /tmp. */
+#define MAX_RPM_NAME_SIZE              (300 * 1000 * 1000)
+/* Maximum dpkg 'status' file we will download to /tmp. */
+#define MAX_DPKG_STATUS_SIZE           (300 * 1000 * 1000)
+/* Maximum APK 'installed' file we will download to /tmp. */
+#define MAX_APK_INSTALLED_SIZE         (300 * 1000 * 1000)
 
 #ifdef DB_DUMP
 static struct guestfs_application2_list *list_applications_rpm (guestfs_h *g, const char *root);
@@ -380,12 +386,12 @@ list_applications_rpm (guestfs_h *g, const char *root)
   struct read_package_data data;
 
   Name = guestfs_int_download_to_tmp (g, "/var/lib/rpm/Name", NULL,
-				      MAX_PKG_DB_SIZE);
+				      MAX_RPM_NAME_SIZE);
   if (Name == NULL)
     goto error;
 
   Packages = guestfs_int_download_to_tmp (g, "/var/lib/rpm/Packages", NULL,
-					  MAX_PKG_DB_SIZE);
+					  MAX_RPM_PACKAGES_SIZE);
   if (Packages == NULL)
     goto error;
 
@@ -437,7 +443,7 @@ list_applications_deb (guestfs_h *g, const char *root)
   size_t continuation_field_len = 0;
 
   status = guestfs_int_download_to_tmp (g, "/var/lib/dpkg/status", NULL,
-					MAX_PKG_DB_SIZE);
+					MAX_DPKG_STATUS_SIZE);
   if (status == NULL)
     return NULL;
 
@@ -721,7 +727,7 @@ list_applications_apk (guestfs_h *g, const char *root)
     *url = NULL, *description = NULL;
 
   installed = guestfs_int_download_to_tmp (g, "/lib/apk/db/installed",
-                                           NULL, MAX_PKG_DB_SIZE);
+                                           NULL, MAX_APK_INSTALLED_SIZE);
   if (installed == NULL)
     return NULL;
 
-- 
2.17.2