Mercurial > gnulib
view tests/test-gethostname.c @ 40196:e63f5d3edab5
relocatable-prog: Update documentation.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 24 Feb 2019 01:49:15 +0100 |
parents | b06060465f09 |
children |
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/* * Copyright (C) 2008-2019 Free Software Foundation, Inc. * Written by Simon Josefsson. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include <config.h> /* Get gethostname() declaration. */ #include <unistd.h> #include "signature.h" SIGNATURE_CHECK (gethostname, int, (char *, size_t)); /* Get HOST_NAME_MAX definition. */ #include <limits.h> #include <stdio.h> #include <string.h> #include <errno.h> #define NOHOSTNAME "magic-gnulib-test-string" int main (int argc, char *argv[] _GL_UNUSED) { char buf[HOST_NAME_MAX]; int rc; if (strlen (NOHOSTNAME) >= HOST_NAME_MAX) { printf ("HOST_NAME_MAX impossibly small?! %d\n", HOST_NAME_MAX); return 2; } strcpy (buf, NOHOSTNAME); rc = gethostname (buf, sizeof (buf)); if (rc != 0) { printf ("gethostname failed, rc %d errno %d\n", rc, errno); return 1; } if (strcmp (buf, NOHOSTNAME) == 0) { printf ("gethostname left buffer untouched.\n"); return 1; } if (argc > 1) printf ("hostname: %s\n", buf); return 0; }