1 files changed, 158 insertions, 0 deletions
diff --git a/third_party/rust/lucet-wasi-wasmsbx/tests/guests/fs.c b/third_party/rust/lucet-wasi-wasmsbx/tests/guests/fs.c
new file mode 100644
index 0000000000..6f4bfa78e5
--- /dev/null
+++ b/third_party/rust/lucet-wasi-wasmsbx/tests/guests/fs.c
@@ -0,0 +1,158 @@
+#include <sys/stat.h>
+#include <sys/time.h>
+
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+#include <utime.h>
+
+int main(void)
+{
+    struct timespec times[2];
+    struct dirent * entry;
+    char            buf[4];
+    DIR *           dir;
+    FILE *          fp;
+    struct stat     st;
+    off_t           offset;
+    int             fd;
+    int             res;
+
+    fd = open("/sandbox/testfile", O_CREAT | O_RDWR, 0644);
+    assert(fd != -1);
+
+    res = posix_fallocate(fd, 0, 10000);
+    assert(res == 0);
+
+    res = fstat(fd, &st);
+    assert(res == 0);
+    assert(st.st_size == 10000);
+
+    res = ftruncate(fd, 1000);
+    res = fstat(fd, &st);
+    assert(res == 0);
+    assert(st.st_size == 1000);
+    assert(st.st_nlink == 1);
+    res = posix_fadvise(fd, 0, 1000, POSIX_FADV_RANDOM);
+    assert(res == 0);
+
+    res = (int) write(fd, "test", 4);
+    assert(res == 4);
+
+    offset = lseek(fd, 0, SEEK_CUR);
+    assert(offset == 4);
+    offset = lseek(fd, 0, SEEK_END);
+    assert(offset == 1000);
+    offset = lseek(fd, 0, SEEK_SET);
+    assert(offset == 0);
+
+    res = fdatasync(fd);
+    assert(res == 0);
+
+    res = fsync(fd);
+    assert(res == 0);
+
+    times[0] = (struct timespec){ .tv_sec = 1557403800, .tv_nsec = 0 };
+    times[1] = (struct timespec){ .tv_sec = 1557403800, .tv_nsec = 0 };
+
+    res = futimens(fd, times);
+    assert(res == 0);
+
+    res = pread(fd, buf, sizeof buf, 2);
+    assert(res == 4);
+    assert(buf[1] == 't');
+
+    res = pwrite(fd, "T", 1, 3);
+    assert(res == 1);
+
+    res = pread(fd, buf, sizeof buf, 2);
+    assert(res == 4);
+    assert(buf[1] == 'T');
+
+    res = close(fd);
+    assert(res == 0);
+
+    dir = opendir("/nonexistent");
+    assert(dir == NULL);
+
+    res = mkdir("/sandbox/test", 0755);
+    assert(res == 0);
+
+    res = mkdir("/sandbox/test", 0755);
+    assert(res == -1);
+    assert(errno == EEXIST);
+
+    res = rmdir("/sandbox/test");
+    assert(res == 0);
+
+    res = rmdir("/sandbox/test");
+    assert(res == -1);
+
+    res = rename("/sandbox/testfile", "/sandbox/testfile2");
+    assert(res == 0);
+
+    res = unlink("/sandbox/testfile");
+    assert(res == -1);
+
+    res = access("/sandbox/testfile2", R_OK);
+    assert(res == 0);
+
+    res = link("/sandbox/testfile2", "/sandbox/testfile-link");
+    assert(res == 0);
+
+    res = access("/sandbox/testfile-link", R_OK);
+    assert(res == 0);
+
+    res = symlink("/sandbox/testfile-link", "/sandbox/testfile-symlink");
+    assert(res == 0);
+
+    res = symlink("/sandbox/testfile2", "/sandbox/testfile-symlink");
+    assert(res == -1);
+
+    res = sched_yield();
+    assert(res == 0);
+
+    fd = open("/sandbox/testfile2", O_RDONLY);
+    assert(fd != -1);
+
+    fp = fdopen(fd, "r");
+    assert(fp != NULL);
+
+    res = fgetc(fp);
+    assert(res == 't');
+
+    res = fclose(fp);
+    assert(res == 0);
+
+    dir = opendir("/sandbox");
+    assert(dir != NULL);
+
+    res = 0;
+    while ((entry = readdir(dir)) != NULL) {
+        if (entry->d_name[0] == '.') {
+            res += 1000;
+        } else {
+            res++;
+        }
+    }
+    assert(res == 2003);
+
+    res = closedir(dir);
+    assert(res == 0);
+
+    res = mkdir("/sandbox/a", 0755);
+    assert(res == 0);
+    res = mkdir("/sandbox/a/b", 0755);
+    assert(res == 0);
+    res = mkdir("/sandbox/a/b/c", 0755);
+    assert(res == 0);
+    res = access("/sandbox/a/b/c", R_OK);
+    assert(res == 0);
+
+    return 0;
+}