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From 5006e4bd9aecea40ca3d907adc692c4c8001a6c1 Mon Sep 17 00:00:00 2001
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From: Yu Watanabe <watanabe.yu+github@gmail.com>
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Date: Mon, 22 Jul 2019 11:08:06 +0900
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Subject: [PATCH] pstore: do not add FILE= journal entry if content_size == 0
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(cherry picked from commit 6bf18debddbe1b231f783617e054cc194bb36d1e)
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Related: #2158832
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---
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 src/pstore/pstore.c | 25 ++++++++++++++-----------
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 1 file changed, 14 insertions(+), 11 deletions(-)
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diff --git a/src/pstore/pstore.c b/src/pstore/pstore.c
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index ce8080ceed..eb251d61c8 100644
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--- a/src/pstore/pstore.c
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+++ b/src/pstore/pstore.c
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@@ -114,10 +114,8 @@ static int compare_pstore_entries(const void *_a, const void *_b) {
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 static int move_file(PStoreEntry *pe, const char *subdir) {
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         _cleanup_free_ char *ifd_path = NULL, *ofd_path = NULL;
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-        _cleanup_free_ void *field = NULL;
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+        const char *suffix, *message;
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         struct iovec iovec[2];
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-        const char *suffix;
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-        size_t field_size;
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         int n_iovec = 0, r;
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         if (pe->handled)
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@@ -133,15 +131,20 @@ static int move_file(PStoreEntry *pe, const char *subdir) {
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         /* Always log to the journal */
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         suffix = arg_storage == PSTORE_STORAGE_EXTERNAL ? strjoina(" moved to ", ofd_path) : (char *)".";
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-        field = strjoina("MESSAGE=PStore ", pe->dirent.d_name, suffix);
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-        iovec[n_iovec++] = IOVEC_MAKE_STRING(field);
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+        message = strjoina("MESSAGE=PStore ", pe->dirent.d_name, suffix);
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+        iovec[n_iovec++] = IOVEC_MAKE_STRING(message);
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-        field_size = strlen("FILE=") + pe->content_size;
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-        field = malloc(field_size);
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-        if (!field)
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-                return log_oom();
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-        memcpy(stpcpy(field, "FILE="), pe->content, pe->content_size);
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-        iovec[n_iovec++] = IOVEC_MAKE(field, field_size);
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+        if (pe->content_size > 0) {
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+                _cleanup_free_ void *field = NULL;
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+                size_t field_size;
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+
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+                field_size = strlen("FILE=") + pe->content_size;
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+                field = malloc(field_size);
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+                if (!field)
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+                        return log_oom();
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+                memcpy(stpcpy(field, "FILE="), pe->content, pe->content_size);
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+                iovec[n_iovec++] = IOVEC_MAKE(field, field_size);
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+        }
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         r = sd_journal_sendv(iovec, n_iovec);
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         if (r < 0)