[hackers] [sbase] Ensure we return a proper error value in setsid(1) || sin

[git]

commit 6a18e77962eee34480e7b8c89f1e4a441beac8bf
Author: sin <s...@2f30.org>
Date:   Mon Jan 27 15:15:58 2014 +0000

    Ensure we return a proper error value in setsid(1)

diff --git a/setsid.c b/setsid.c
index 6f7c095..b46c4f3 100644
--- a/setsid.c
+++ b/setsid.c
@@ -15,6 +15,8 @@ usage(void)
 int
 main(int argc, char *argv[])
 {
+       int savederrno;
+
        ARGBEGIN {
        default:
                usage();
@@ -36,6 +38,7 @@ main(int argc, char *argv[])
        if(setsid() < 0)
                eprintf("setsid:");
        execvp(argv[0], argv);
-       eprintf("execvp:");
-       return (errno == ENOENT) ? 127 : 126;
+       savederrno = errno;
+       weprintf("execvp %s:", argv[0]);
+       return (savederrno == ENOENT) ? 127 : 126;
 }