logind: make $XDG_RUNTIME_DIR a per-user tmpfs

This way each user allocates from his own pool, with its own size limit.

This puts the size limit by default to 10% of the physical RAM size but
makes it configurable in logind.conf.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/shared/util.h b/src/shared/util.h
index 78b1444739..e4300719a3 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -58,6 +58,14 @@
 #  error Unknown uid_t size
 #endif
 
+#if SIZEOF_GID_T == 4
+#  define GID_FMT "%" PRIu32
+#elif SIZEOF_GID_T == 2
+#  define GID_FMT "%" PRIu16
+#else
+#  error Unknown gid_t size
+#endif
+
 #include "macro.h"
 #include "time-util.h"
 
@@ -883,3 +891,5 @@ int fd_warn_permissions(const char *path, int fd);
 
 unsigned long personality_from_string(const char *p);
 const char *personality_to_string(unsigned long);
+
+uint64_t physical_memory(void);