Zbigniew Jędrzejewski-Szmek
11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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***/
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "alloc-util.h"
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#include "fileio.h"
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#include "hostname-setup.h"
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#include "hostname-util.h"
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#include "log.h"
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#include "macro.h"
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#include "string-util.h"
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#include "util.h"
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int hostname_setup(void) {
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_cleanup_free_ char *b = NULL;
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bool enoent = false;
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const char *hn;
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int r;
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r = read_etc_hostname(NULL, &b);
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if (r < 0) {
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if (r == -ENOENT)
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enoent = true;
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else
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log_warning_errno(r, "Failed to read configured hostname: %m");
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hn = NULL;
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} else
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hn = b;
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if (isempty(hn)) {
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/* Don't override the hostname if it is already set
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* and not explicitly configured */
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if (hostname_is_set())
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return 0;
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if (enoent)
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log_info("No hostname configured.");
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hn = FALLBACK_HOSTNAME;
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}
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r = sethostname_idempotent(hn);
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if (r < 0)
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return log_warning_errno(r, "Failed to set hostname to <%s>: %m", hn);
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log_info("Set hostname to <%s>.", hn);
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return 0;
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}
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