command: Add function to show own file ownership

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

diff --git a/tests/stub/command.c b/tests/stub/command.c
index 9c9dc27f8af810bd6fb920bba541d5e7f4e6e832..3fa7802d3bf8995c6ea98dbeed39583708d968ba 100644 (file)
--- a/tests/stub/command.c
+++ b/tests/stub/command.c
@@ -18,10 +18,12 @@
 #                                                                             #
 #############################################################################*/
 
+#include <linux/limits.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/resource.h>
+#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <time.h>
@@ -261,6 +263,45 @@ static int _sleep(int argc, char* argv[]) {
        return EXIT_SUCCESS;
 }
 
+static int stat_self(struct stat* st) {
+       char path[PATH_MAX];
+       int r;
+
+       // Find path to ourselves
+       r = readlink("/proc/self/exe", path, sizeof(path));
+       if (r < 0) {
+               fprintf(stderr, "readlink() failed: %m\n");
+               return 1;
+       }
+
+       // stat()
+       r = stat(path, st);
+       if (r < 0) {
+               fprintf(stderr, "stat() on %s failed: %m\n", path);
+               return 1;
+       }
+
+       return 0;
+}
+
+/*
+       Returns who owns this binary
+*/
+static int stat_ownership(int argc, char* argv[]) {
+       struct stat st;
+       int r;
+
+       // Stat ourselves
+       r = stat_self(&st);
+       if (r)
+               return r;
+
+       // Print result
+       printf("uid=%d gid=%d\n", st.st_uid, st.st_gid);
+
+       return 0;
+}
+
 int main(int argc, char* argv[]) {
        if (argc < 2) {
                fprintf(stderr, "No command given\n");
@@ -313,6 +354,10 @@ int main(int argc, char* argv[]) {
        else if (strcmp(command, "sleep") == 0)
                callback = _sleep;
 
+       // Stat ownership
+       else if (strcmp(command, "stat-ownership") == 0)
+               callback = stat_ownership;
+
        // Exit if no callback has been set
        if (!callback) {
                fprintf(stderr, "Unknown command: %s\n", command);