debianized.

1 files changed, 33 insertions, 0 deletions

diff --git a/src/setuidgid.c b/src/setuidgid.c
new file mode 100644
index 0000000..e5a3db3
--- /dev/null
+++ b/src/setuidgid.c
@@ -0,0 +1,33 @@
+#include <sys/types.h>
+#include <pwd.h>
+#include "prot.h"
+#include "strerr.h"
+#include "pathexec.h"
+
+#define USAGE " account child"
+#define FATAL "setuidgid: fatal: "
+
+const char *progname;
+
+void fatal(char *m) { strerr_die3sys(111, FATAL, m, ": "); }
+void usage() { strerr_die4x(100, "usage: ", progname, USAGE, "\n"); }
+
+int main(int argc, const char *const *argv, const char *const *envp) {
+  const char *account;
+  struct passwd *pw;
+
+  progname =argv[0];
+
+  if (! (account =*++argv)) usage();
+  if (! *++argv) usage();
+
+  if (! (pw =getpwnam(account)))
+    strerr_die3x(111, FATAL, "unknown account ", account);
+
+  if (prot_gid(pw->pw_gid) == -1) fatal("unable to setgid");
+  if (prot_uid(pw->pw_uid) == -1) fatal("unable to setuid");
+
+  pathexec_run(*argv, argv, envp);
+  strerr_die4sys(111, FATAL, "unable to run ", *argv, ": ");
+  return(1);
+}