From dacd6cee76a08331b8c8616c5f30f70ee49aa2f9 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 29 Jul 2015 20:31:07 +0200
Subject: tree-wide: port everything over to fflush_and_check()

Some places invoked fflush() directly with their own manual error
checking, let's unify all that by using fflush_and_check().

This also unifies the general error paths of fflush()+rename() file
writers.
---
 src/journal/catalog.c         | 12 +++++-------
 src/journal/journald-stream.c | 26 ++++++++++++--------------
 2 files changed, 17 insertions(+), 21 deletions(-)

(limited to 'src/journal')

diff --git a/src/journal/catalog.c b/src/journal/catalog.c
index 0801e13599..33b0539315 100644
--- a/src/journal/catalog.c
+++ b/src/journal/catalog.c
@@ -371,25 +371,23 @@ static long write_catalog(const char *database, Hashmap *h, struct strbuf *sb,
                 goto error;
         }
 
-        fflush(w);
-
-        if (ferror(w)) {
-                log_error("%s: failed to write database.", p);
+        r = fflush_and_check(w);
+        if (r < 0) {
+                log_error_errno(r, "%s: failed to write database: %m", p);
                 goto error;
         }
 
         fchmod(fileno(w), 0644);
 
         if (rename(p, database) < 0) {
-                log_error_errno(errno, "rename (%s -> %s) failed: %m", p, database);
-                r = -errno;
+                r = log_error_errno(errno, "rename (%s -> %s) failed: %m", p, database);
                 goto error;
         }
 
         return ftell(w);
 
 error:
-        unlink(p);
+        (void) unlink(p);
         return r;
 }
 
diff --git a/src/journal/journald-stream.c b/src/journal/journald-stream.c
index db2f581972..69e2d41863 100644
--- a/src/journal/journald-stream.c
+++ b/src/journal/journald-stream.c
@@ -142,7 +142,7 @@ static int stdout_stream_save(StdoutStream *s) {
 
         r = fopen_temporary(s->state_file, &f, &temp_path);
         if (r < 0)
-                goto finish;
+                goto fail;
 
         fprintf(f,
                 "# This is private data. Do not parse\n"
@@ -163,7 +163,7 @@ static int stdout_stream_save(StdoutStream *s) {
                 escaped = cescape(s->identifier);
                 if (!escaped) {
                         r = -ENOMEM;
-                        goto finish;
+                        goto fail;
                 }
 
                 fprintf(f, "IDENTIFIER=%s\n", escaped);
@@ -175,7 +175,7 @@ static int stdout_stream_save(StdoutStream *s) {
                 escaped = cescape(s->unit_id);
                 if (!escaped) {
                         r = -ENOMEM;
-                        goto finish;
+                        goto fail;
                 }
 
                 fprintf(f, "UNIT=%s\n", escaped);
@@ -183,16 +183,13 @@ static int stdout_stream_save(StdoutStream *s) {
 
         r = fflush_and_check(f);
         if (r < 0)
-                goto finish;
+                goto fail;
 
         if (rename(temp_path, s->state_file) < 0) {
                 r = -errno;
-                goto finish;
+                goto fail;
         }
 
-        free(temp_path);
-        temp_path = NULL;
-
         /* Store the connection fd in PID 1, so that we get it passed
          * in again on next start */
         if (!s->fdstore) {
@@ -200,14 +197,15 @@ static int stdout_stream_save(StdoutStream *s) {
                 s->fdstore = true;
         }
 
-finish:
-        if (temp_path)
-                unlink(temp_path);
+        return 0;
 
-        if (r < 0)
-                log_error_errno(r, "Failed to save stream data %s: %m", s->state_file);
+fail:
+        (void) unlink(s->state_file);
+
+        if (temp_path)
+                (void) unlink(temp_path);
 
-        return r;
+        return log_error_errno(r, "Failed to save stream data %s: %m", s->state_file);
 }
 
 static int stdout_stream_log(StdoutStream *s, const char *p) {
-- 
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