libext2fs: the unixfd IO manager shouldn't close its fd

The unixfd IO manager didn't create the fd that was passed in, so it
should not close the fd when the io channel closes.

Cc: <linux-ext4@vger.kernel.org> # v1.43.2
Fixes: 4ccf9e4fe165cf ("libext2fs: add unixfd_io_manager")
Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>

diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
index 723a5c2474cdd5d0d3f3aed75c148ba31d009575..1456b4d4bbe212c0bc1cf9993c4d01a5195e80a5 100644 (file)
--- a/lib/ext2fs/unix_io.c
+++ b/lib/ext2fs/unix_io.c
@@ -1061,7 +1061,7 @@ static errcode_t unix_open_channel(const char *name, int fd,
 
 cleanup:
        if (data) {
-               if (data->dev >= 0)
+               if (io->manager != unixfd_io_manager && data->dev >= 0)
                        close(data->dev);
                if (data->cache) {
                        free_cache(data);
@@ -1147,7 +1147,7 @@ static errcode_t unix_close(io_channel channel)
        retval = flush_cached_blocks(channel, data, 0);
 #endif
 
-       if (close(data->dev) < 0)
+       if (channel->manager != unixfd_io_manager && close(data->dev) < 0)
                retval = errno;
        free_cache(data);
        free(data->cache);