[PATCH 2/3] xfs_scrub: load and unload libicu properly

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From: Darrick J. Wong <djwong@xxxxxxxxxx>

Make sure we actually load and unload libicu properly.  This isn't
strictly required since the library can bootstrap itself, but unloading
means fewer things for valgrind to complain about.

Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
 scrub/unicrash.c  |   17 +++++++++++++++++
 scrub/unicrash.h  |    4 ++++
 scrub/xfs_scrub.c |    6 ++++++
 3 files changed, 27 insertions(+)


diff --git a/scrub/unicrash.c b/scrub/unicrash.c
index d5d2cf20..de3217c2 100644
--- a/scrub/unicrash.c
+++ b/scrub/unicrash.c
@@ -722,3 +722,20 @@ unicrash_check_fs_label(
 	return __unicrash_check_name(uc, dsc, _("filesystem label"),
 			label, 0);
 }
+
+/* Load libicu and initialize it. */
+bool
+unicrash_load(void)
+{
+	UErrorCode		uerr = U_ZERO_ERROR;
+
+	u_init(&uerr);
+	return U_FAILURE(uerr);
+}
+
+/* Unload libicu once we're done with it. */
+void
+unicrash_unload(void)
+{
+	u_cleanup();
+}
diff --git a/scrub/unicrash.h b/scrub/unicrash.h
index c3a7f385..32cae3d4 100644
--- a/scrub/unicrash.h
+++ b/scrub/unicrash.h
@@ -25,6 +25,8 @@ int unicrash_check_xattr_name(struct unicrash *uc, struct descr *dsc,
 		const char *attrname);
 int unicrash_check_fs_label(struct unicrash *uc, struct descr *dsc,
 		const char *label);
+bool unicrash_load(void);
+void unicrash_unload(void);
 #else
 # define unicrash_dir_init(u, c, b)		(0)
 # define unicrash_xattr_init(u, c, b)		(0)
@@ -33,6 +35,8 @@ int unicrash_check_fs_label(struct unicrash *uc, struct descr *dsc,
 # define unicrash_check_dir_name(u, d, n)	(0)
 # define unicrash_check_xattr_name(u, d, n)	(0)
 # define unicrash_check_fs_label(u, d, n)	(0)
+# define unicrash_init()			(0)
+# define unicrash_unload()			do { } while (0)
 #endif /* HAVE_LIBICU */
 
 #endif /* XFS_SCRUB_UNICRASH_H_ */
diff --git a/scrub/xfs_scrub.c b/scrub/xfs_scrub.c
index 1edeb150..6b202912 100644
--- a/scrub/xfs_scrub.c
+++ b/scrub/xfs_scrub.c
@@ -603,6 +603,11 @@ main(
 	setlocale(LC_ALL, "");
 	bindtextdomain(PACKAGE, LOCALEDIR);
 	textdomain(PACKAGE);
+	if (unicrash_load()) {
+		fprintf(stderr,
+			_("%s: could initialize Unicode library.\n"), progname);
+		goto out;
+	}
 
 	pthread_mutex_init(&ctx.lock, NULL);
 	ctx.mode = SCRUB_MODE_REPAIR;
@@ -788,6 +793,7 @@ main(
 	phase_end(&all_pi, 0);
 	if (progress_fp)
 		fclose(progress_fp);
+	unicrash_unload();
 
 	/*
 	 * If we're being run as a service, the return code must fit the LSB




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