1 files changed, 67 insertions, 0 deletions
diff --git a/ports/linux/guts/openat.c b/ports/linux/guts/openat.c
new file mode 100644
index 0000000..c245796
--- /dev/null
+++ b/ports/linux/guts/openat.c
@@ -0,0 +1,67 @@
+/* 
+ * Copyright (c) 2008-2010 Wind River Systems; see
+ * guts/COPYRIGHT for information.
+ *
+ * static int
+ * wrap_openat(int dirfd, const char *path, int flags, ...mode_t mode) {
+ *	int rc = -1;
+ */
+	struct stat64 buf;
+	int existed = 1;
+	int save_errno;
+
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+	if (dirfd != AT_FDCWD) {
+		errno = ENOSYS;
+		return -1;
+	}
+#endif
+	/* if a creation has been requested, check whether file exists */
+	if (flags & O_CREAT) {
+		save_errno = errno;
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+		rc = real___xstat64(_STAT_VER, path, &buf);
+#else
+		rc = real___fxstatat64(_STAT_VER, dirfd, path, &buf, 0);
+#endif
+		existed = (rc != -1);
+		if (!existed)
+			pseudo_debug(2, "openat_creat: %s -> 0%o\n", path, mode);
+		errno = save_errno;
+	}
+
+	/* because we are not actually root, secretly mask in 0700 to the
+	 * underlying mode
+	 */
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+	rc = real_open(path, flags, PSEUDO_FS_MODE(mode));
+#else
+	rc = real_openat(dirfd, path, flags, PSEUDO_FS_MODE(mode));
+#endif
+	save_errno = errno;
+
+	if (rc != -1) {
+		int stat_rc;
+#ifdef PSEUDO_NO_REAL_AT_FUNCTIONS
+		stat_rc = real___xstat64(_STAT_VER, path, &buf);
+#else
+		stat_rc = real___fxstatat64(_STAT_VER, dirfd, path, &buf, 0);
+#endif
+
+		if (stat_rc != -1) {
+			buf.st_mode = PSEUDO_DB_MODE(buf.st_mode, mode);
+			if (!existed) {
+				pseudo_client_op(OP_CREAT, 0, -1, dirfd, path, &buf);
+			}
+			pseudo_client_op(OP_OPEN, PSEUDO_ACCESS(flags), rc, dirfd, path, &buf);
+		} else {
+			pseudo_debug(1, "openat (fd %d, path %d/%s, flags %d) succeeded, but stat failed (%s).\n",
+				rc, dirfd, path, flags, strerror(errno));
+			pseudo_client_op(OP_OPEN, PSEUDO_ACCESS(flags), rc, dirfd, path, 0);
+		}
+		errno = save_errno;
+	}
+
+/*	return rc;
+ * }
+ */