Add open files to resource debug

1 files changed, 18 insertions, 1 deletions

diff --git a/utils.c b/utils.c
index 45ecf92..39f91f1 100644
--- a/utils.c
+++ b/utils.c
@@ -6,6 +6,8 @@
 #include <string.h>
 #include <sys/types.h>
 #include <dirent.h>
+#include <fcntl.h>
+#include <unistd.h>
 
 #include "main.h"
 #include "utils.h"
@@ -112,6 +114,9 @@ debug_resource_usage()
 	struct allocation *a;
 	DIR *dir;
 	struct dirent *dent;
+	char buf[4096];
+	ssize_t r;
+	unsigned file_count = 0;
 
 	fprintf(stderr, "Still malloced %i (total %u)\n",
 		malloc_count, total_malloc_count);
@@ -133,9 +138,21 @@ debug_resource_usage()
 		    !strcmp(dent->d_name, ".."))
 			continue;
 
-		fprintf(stderr, " * %s\n", dent->d_name);
+		r = readlinkat(dirfd(dir), dent->d_name, buf, sizeof(buf));
+		if (r < 0) {
+			fprintf(stderr, "Failed to readlink %s\n", dent->d_name);
+			continue;
+		}
+		buf[r] = '\0';
+		fprintf(stderr, " * %s -> %s\n", dent->d_name, buf);
+		file_count++;
 	}
 	closedir(dir);
+
+	if (file_count > 4) {
+		fprintf(stderr, "Lost file descriptor(s)\n");
+		exit(EXIT_FAILURE);
+	}
 }
 
 uint16_t sockaddr_port(struct sockaddr_in46 *addr)