LibC+Userland: Add a proper syscall wrapper for purge()

2 files changed, 11 insertions, 0 deletions

diff --git a/Libraries/LibC/serenity.cpp b/Libraries/LibC/serenity.cpp
index 5b47f6ae41..7ada371ad8 100644
--- a/Libraries/LibC/serenity.cpp
+++ b/Libraries/LibC/serenity.cpp
@@ -47,4 +47,10 @@ int futex(int32_t* userspace_address, int futex_op, int32_t value, const struct
     __RETURN_WITH_ERRNO(rc, rc, -1);
 }
 
+int purge(int mode)
+{
+    int rc = syscall(SC_purge, mode);
+    __RETURN_WITH_ERRNO(rc, rc, -1);
+}
+
 }
diff --git a/Libraries/LibC/serenity.h b/Libraries/LibC/serenity.h
index 634d804502..5ab39f7da0 100644
--- a/Libraries/LibC/serenity.h
+++ b/Libraries/LibC/serenity.h
@@ -58,4 +58,9 @@ int set_process_boost(pid_t, int amount);
 
 int futex(int32_t* userspace_address, int futex_op, int32_t value, const struct timespec* timeout);
 
+#define PURGE_ALL_VOLATILE 0x1
+#define PURGE_ALL_CLEAN_INODE 0x2
+
+int purge(int mode);
+
 __END_DECLS