87 lines
2.5 KiB
Diff
87 lines
2.5 KiB
Diff
From 7cc9fe69d3f35038b7b3329fef0cccdbe38ffef6 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Mon, 13 Dec 2021 13:22:56 +0100
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Subject: mount: add hint about systemctl daemon-reload
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This commit implements an extra hint for systemd based distros to
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inform users that units currently used by systemd are older than
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fstab. This situation is usually unwanted, and 'systemctl
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daemon-reload' is recommended.
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The message is printed only on terminal to avoid extra messages in
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logs, etc.
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Addresses: https://github.com/systemd/systemd/pull/20476
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=2180413
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Upstream: http://github.com/util-linux/util-linux/commit/1db0715169954a8f3898f7ca9d3902cd6c27084d
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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include/pathnames.h | 2 ++
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sys-utils/mount.c | 23 +++++++++++++++++++++++
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2 files changed, 25 insertions(+)
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diff --git a/include/pathnames.h b/include/pathnames.h
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index 77f8b6e85..19b117cb9 100644
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--- a/include/pathnames.h
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+++ b/include/pathnames.h
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@@ -76,6 +76,8 @@
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#define _PATH_NUMLOCK_ON _PATH_RUNSTATEDIR "/numlock-on"
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#define _PATH_LOGINDEFS "/etc/login.defs"
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+#define _PATH_SD_UNITSLOAD _PATH_RUNSTATEDIR "/systemd/systemd-units-load"
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+
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/* misc paths */
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#define _PATH_WORDS "/usr/share/dict/words"
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#define _PATH_WORDS_ALT "/usr/share/dict/web2"
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diff --git a/sys-utils/mount.c b/sys-utils/mount.c
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index 83cccf63e..108b55001 100644
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--- a/sys-utils/mount.c
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+++ b/sys-utils/mount.c
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@@ -38,6 +38,7 @@
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#include "strutils.h"
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#include "closestream.h"
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#include "canonicalize.h"
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+#include "pathnames.h"
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#define XALLOC_EXIT_CODE MNT_EX_SYSERR
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#include "xalloc.h"
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@@ -287,6 +288,25 @@ static void selinux_warning(struct libmnt_context *cxt, const char *tgt)
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# define selinux_warning(_x, _y)
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#endif
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+static void systemd_hint(void)
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+{
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+ static int fstab_check_done = 0;
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+
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+ if (fstab_check_done == 0) {
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+ struct stat a, b;
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+
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+ if (isatty(STDERR_FILENO) &&
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+ stat(_PATH_SD_UNITSLOAD, &a) == 0 &&
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+ stat(_PATH_MNTTAB, &b) == 0 &&
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+ cmp_stat_mtime(&a, &b, <))
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+ printf(_(
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+ "mount: (hint) your fstab has been modified, but systemd still uses\n"
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+ " the old version; use 'systemctl daemon-reload' to reload.\n"));
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+
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+ fstab_check_done = 1;
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+ }
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+}
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+
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/*
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* Returns exit status (MNT_EX_*) and/or prints error message.
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*/
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@@ -310,6 +330,9 @@ static int mk_exit_code(struct libmnt_context *cxt, int rc)
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if (rc == MNT_EX_SUCCESS && mnt_context_get_status(cxt) == 1) {
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selinux_warning(cxt, tgt);
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}
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+
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+ systemd_hint();
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+
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return rc;
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}
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--
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2.39.2
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