quota-fs: If FS quota is enabled, create (some of) users' temp files to /tmp.

--HG--
branch : HEAD

diff --git a/src/plugins/quota/quota-fs.c b/src/plugins/quota/quota-fs.c
index c01b245d104c4718ca11a4d2fd3fcc3144448df6..b5616ec9dfb2d03bf081202f95faff815fa50e69 100644 (file)
--- a/src/plugins/quota/quota-fs.c
+++ b/src/plugins/quota/quota-fs.c
@@ -5,6 +5,7 @@
 #include "lib.h"
 #include "array.h"
 #include "str.h"
+#include "hostpid.h"
 #include "mountpoint.h"
 #include "quota-private.h"
 #include "quota-fs.h"
@@ -87,6 +88,17 @@ static struct quota_root *fs_quota_alloc(void)
        return &root->root;
 }
 
+static const char *
+quota_fs_mail_user_get_temp_prefix(struct mail_user *user ATTR_UNUSED)
+{
+       /* when filesystem quota is used, temp files will decrease the user's
+          quota if they're written under user's home. for example with lda
+          large mails are also first written to this temp directory, so if it
+          were in user's home, the user would always have two have twice
+          as much space available as necessary. */
+       return t_strconcat("/tmp/dovecot.", my_pid, ".", NULL);
+}
+
 static int fs_quota_init(struct quota_root *_root, const char *args)
 {
        struct fs_quota_root *root = (struct fs_quota_root *)_root;
@@ -112,6 +124,9 @@ static int fs_quota_init(struct quota_root *_root, const char *args)
                        return -1;
                }
        }
+
+       _root->quota->user->v.get_temp_prefix =
+               quota_fs_mail_user_get_temp_prefix;
        return 0;
 }