[PATCH] fuse2fs: clean up the lockfile handling

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

Fix various problems with the new lockfile code in fuse2fs: the printfs
should use the actual logging function err_printf, the messages should
be looked up in gettext, we should actually exit main properly on
error instead of calling exit(), and the error message printing for the
final lockfile unlink is broken.

Fixes: e83c0df0135f98 ("fuse2fs: rename the inusefile option to lockfile")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
---
 misc/fuse2fs.c |   45 +++++++++++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 16 deletions(-)

diff --git a/misc/fuse2fs.c b/misc/fuse2fs.c
index 0f9cb6849aa7ad..bb75d9421283ed 100644
--- a/misc/fuse2fs.c
+++ b/misc/fuse2fs.c
@@ -4417,19 +4417,31 @@ int main(int argc, char *argv[])
 		fctx.alloc_all_blocks = 1;
 	}
 
-	if(fctx.lockfile) {
-		FILE* lockfile=fopen(fctx.lockfile, "w");
-		if(!lockfile) {
-			fprintf(stderr, "Requested lockfile=%s but couldn't open the file for writing\n", fctx.lockfile);
-			exit(1);
+	if (fctx.lockfile) {
+		FILE *lockfile = fopen(fctx.lockfile, "w");
+		char *resolved;
+
+		if (!lockfile) {
+			err = errno;
+			err_printf(&fctx, "%s: %s: %s\n", fctx.lockfile,
+				   _("opening lockfile failed"),
+				   strerror(err));
+			fctx.lockfile = NULL;
+			ret |= 32;
+			goto out;
 		}
 		fclose(lockfile);
-		char* resolved = realpath(fctx.lockfile, NULL);
+
+		resolved = realpath(fctx.lockfile, NULL);
 		if (!resolved) {
-			perror("realpath");
-			fprintf(stderr, "Could not resolve realpath for lockfile=%s\n", fctx.lockfile);
+			err = errno;
+			err_printf(&fctx, "%s: %s: %s\n", fctx.lockfile,
+				   _("resolving lockfile failed"),
+				   strerror(err));
 			unlink(fctx.lockfile);
-			exit(1);
+			fctx.lockfile = NULL;
+			ret |= 32;
+			goto out;
 		}
 		free(fctx.lockfile);
 		fctx.lockfile = resolved;
@@ -4639,14 +4651,15 @@ int main(int argc, char *argv[])
 			com_err(argv[0], err, "while closing fs");
 		global_fs = NULL;
 	}
-	if(fctx.lockfile) {
-		err = unlink(fctx.lockfile);
-		if (err)
-			com_err(argv[0], errno, "while unlinking '%s'",
-				fctx.lockfile);
-	}
-	if (fctx.lockfile)
+	if (fctx.lockfile) {
+		if (unlink(fctx.lockfile)) {
+			err = errno;
+			err_printf(&fctx, "%s: %s: %s\n", fctx.lockfile,
+				   _("removing lockfile failed"),
+				   strerror(err));
+		}
 		free(fctx.lockfile);
+	}
 	if (fctx.device)
 		free(fctx.device);
 	fuse_opt_free_args(&args);