1 files changed, 90 insertions, 0 deletions
diff --git a/user/usr/bin/tests/eatinodes.c b/user/usr/bin/tests/eatinodes.c
new file mode 100644
index 0000000..7e6f8a1
--- /dev/null
+++ b/user/usr/bin/tests/eatinodes.c
@@ -0,0 +1,90 @@
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+static char root_dir[64];
+
+static void eatinodes_start(void)
+{
+    int err;
+
+    root_dir[0] = '\0';
+    do
+    {
+        snprintf(root_dir, sizeof(root_dir), "eatinodes-%d", rand());
+        err = mkdir(root_dir, 0777);
+        if (err && errno != EEXIST)
+        {
+            printf("Failed to make test root directory: %s\n", strerror(errno));
+            exit(errno);
+        }
+    } while (err != 0);
+    printf("Created test root directory: ./%s\n", root_dir);
+
+    err = chdir(root_dir);
+    if (err < 0)
+    {
+        printf("Could not cd into test directory\n");
+        exit(1);
+    }
+}
+
+static void eatinodes(void)
+{
+    int i;
+    int fd;
+    int err = 0;
+    char fname[32];
+
+    for (i = 0; !err; ++i)
+    {
+        snprintf(fname, sizeof(fname), "test-%d", i);
+        fd = open(fname, O_CREAT | O_TRUNC | O_WRONLY, 0666);
+        if (fd < 0)
+        {
+            printf("Could not open file %d: %s\n", i, strerror(errno));
+            break;
+        }
+        err = close(fd);
+        if (err < 0)
+        {
+            printf("Could not close fd %d: %s\n", fd, strerror(errno));
+            break;
+        }
+        printf("Created %d files\n", i);
+    }
+    int j;
+    printf("Cleaning up...\n");
+    for (j = 0; j < i; ++j)
+    {
+        snprintf(fname, sizeof(fname), "test-%d", j);
+        err = unlink(fname);
+        if (err < 0)
+        {
+            printf("Could not remove file %d: %s\n", j, strerror(errno));
+        }
+    }
+}
+
+static void eatinodes_end(void)
+{
+    chdir("..");
+    int err = rmdir(root_dir);
+    if (err < 0)
+    {
+        printf("Could not remove test directory: %s\n", strerror(errno));
+    }
+}
+
+int main(int argc, char **argv)
+{
+    eatinodes_start();
+    eatinodes();
+    eatinodes_end();
+
+    return 0;
+}