owner: New utility

2 files changed, 36 insertions, 0 deletions

diff --git a/owner/CMakeLists.txt b/owner/CMakeLists.txt
new file mode 100644
index 0000000..961efe7
--- /dev/null
+++ b/owner/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(OWNER_SRCS
+        owner.c
+)
+add_executable(hscript-printowner ${OWNER_SRCS})
+
+install(TARGETS hscript-printowner DESTINATION bin)
diff --git a/owner/owner.c b/owner/owner.c
new file mode 100644
index 0000000..2540421
--- /dev/null
+++ b/owner/owner.c
@@ -0,0 +1,30 @@
+/*
+ * owner.c - Implementation of the "print file owner UID" utility
+ * Project Horizon
+ *
+ * Copyright (c) 2019 Adélie Linux and contributors.  All rights reserved.
+ * This code is licensed under the NCSA license.
+ *
+ * SPDX-License-Identifier: NCSA
+ */
+
+#include <stdio.h>      /* fprintf, perror */
+#include <stdlib.h>     /* EXIT_* */
+#include <sys/stat.h>   /* stat(3) and friends */
+
+int main(int argc, char *argv[]) {
+    if(argc != 2) {
+        fprintf(stderr, "hscript-printowner: requires a path or file\n");
+        return EXIT_FAILURE;
+    }
+
+    struct stat buf;
+    if(stat(argv[1], &buf) != 0) {
+        perror("hscript-printowner: stat");
+        return EXIT_FAILURE;
+    }
+
+    fprintf(stdout, "%d\n", buf.st_uid);
+
+    return EXIT_SUCCESS;
+}