1 files changed, 43 insertions, 0 deletions
diff --git a/util/shmsweep.c b/util/shmsweep.c
new file mode 100644
index 00000000..01acb26b
--- /dev/null
+++ b/util/shmsweep.c
@@ -0,0 +1,43 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include "config.h"
+#include "pttstruct.h"
+
+int main() {
+    int i, shm, counter;
+    struct utmpfile_t *utmpshm;
+
+    
+    shm = shmget(UTMPSHM_KEY, USHM_SIZE, SHM_R | SHM_W);
+    if(shm == -1) {
+	perror("shmget");
+	exit(0);
+    }
+    
+    utmpshm = shmat(shm, NULL, 0);
+    if(utmpshm == (struct utmpfile_t *)-1) {
+	perror("shmat");
+	exit(0);
+    }
+    
+    for(i = counter = 0; i < USHM_SIZE; i++)
+	if(utmpshm->uinfo[i].pid) {
+	    char buf[256];
+	    userinfo_t *f;
+	    struct stat sb;
+		
+	    f = &utmpshm->uinfo[i];
+	    sprintf(buf, "/proc/%d", f->pid);
+	    if(stat(buf, &sb)) {
+		f->pid = 0;
+		utmpshm->number--;
+		counter++;
+	    }
+	}
+    printf("clear %d slots\n", counter);
+    return 0;
+}