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Fix pg_truncate() on Windows.

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Commit 57faaf376 added pg_truncate(const char *path, off_t length), but
"length" was ignored under WIN32 and the file was unconditionally
truncated to 0.

There was no live bug, since the only caller passes 0.

Fix, and back-patch to 14 where the function arrived.

Author: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://postgr.es/m/20230106031652.GR3109%40telsasoft.com
This commit is contained in:
Thomas Munro 2023-01-06 16:38:46 +13:00
parent f2857af485
commit 72aea955d4
1 changed files with 1 additions and 1 deletions
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2
src/backend/storage/file/fd.c
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@ -638,7 +638,7 @@ pg_truncate(const char *path, off_t length)
fd = OpenTransientFile(path, O_RDWR | PG_BINARY); fd = OpenTransientFile(path, O_RDWR | PG_BINARY);
if (fd >= 0) if (fd >= 0)
{ {
ret = ftruncate(fd, 0); ret = ftruncate(fd, length);
save_errno = errno; save_errno = errno;
CloseTransientFile(fd); CloseTransientFile(fd);
errno = save_errno; errno = save_errno;