[PATCH v4 03/11] reftable: fix resource leak blocksource.c

From: Han-Wen Nienhuys via GitGitGadget <gitgitgadget@gmail.com>
Date: Dec 14, 2021, 11:47 UTC
Message-ID: <7a914f77756bc7c9ec5338584f955cb5930ea4e4.1639482477.git.gitgitgadget@gmail.com>
In-Reply-To: <pull.1152.v4.git.git.1639482476.gitgitgadget@gmail.com>

From: Han-Wen Nienhuys <hanwen@google.com>

This would be triggered in the unlikely event of fstat() failing on an opened file.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
---
 reftable/blocksource.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/reftable/blocksource.c b/reftable/blocksource.c
index 0044eecd9aa..2605371c28d 100644
--- a/reftable/blocksource.c
+++ b/reftable/blocksource.c
@@ -134,8 +134,10 @@ int reftable_block_source_from_file(struct reftable_block_source *bs,
 	}
 
 	err = fstat(fd, &st);
-	if (err < 0)
-		return -1;
+	if (err < 0) {
+		close(fd);
+		return REFTABLE_IO_ERROR;
+	}
 
 	p = reftable_calloc(sizeof(struct file_block_source));
 	p->size = st.st_size;

-- 
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