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Fix partial read handling in pg_upgrade's multixact conversion

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Author: Man Zeng <zengman@halodbtech.com>
Discussion: https://www.postgresql.org/message-id/tencent_566562B52163DB1502F4F7A4@qq.com
This commit is contained in:
Heikki Linnakangas
2026-01-04 20:04:36 +02:00
parent 0eadf1767a
commit ac94ce8194
1 changed files with 2 additions and 2 deletions
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4
src/bin/pg_upgrade/slru_io.c
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@@ -121,7 +121,7 @@ SlruReadSwitchPageSlow(SlruSegState *state, uint64 pageno)
ssize_t rc;
rc = pg_pread(state->fd,
&state->buf.data + bytes_read,
&state->buf.data[bytes_read],
BLCKSZ - bytes_read,
offset);
if (rc < 0)
@@ -135,7 +135,7 @@ SlruReadSwitchPageSlow(SlruSegState *state, uint64 pageno)
/* unexpected EOF */
pg_log(PG_WARNING, "unexpected EOF reading file \"%s\" at offset %u, reading as zeros",
state->fn, (unsigned int) offset);
memset(&state->buf.data + bytes_read, 0, BLCKSZ - bytes_read);
memset(&state->buf.data[bytes_read], 0, BLCKSZ - bytes_read);
break;
}
bytes_read += rc;