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Check return value of pclose() correctly

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Some callers didn't check the return value of pclose() or
ClosePipeStream() correctly.  Either they didn't check it at all or
they treated it like the return of fclose().

The correct way is to first check whether the return value is -1, and
then report errno, and then check the return value like a result from
system(), for which we already have wait_result_to_str() to make it
simpler.  To make this more compact, expand wait_result_to_str() to
also handle -1 explicitly.

Reviewed-by: Ankit Kumar Pandey <itsankitkp@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/8cd9fb02-bc26-65f1-a809-b1cb360eef73@enterprisedb.com
This commit is contained in:
Peter Eisentraut
2022-11-15 15:35:37 +01:00
parent b7f3981756
commit 2fe3bdbd69
8 changed files with 57 additions and 15 deletions
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2
src/bin/pgbench/pgbench.c
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@@ -3002,7 +3002,7 @@ runShellCommand(Variables *variables, char *variable, char **argv, int argc)
}
if (pclose(fp) < 0)
{
pg_log_error("%s: could not close shell command", argv[0]);
pg_log_error("%s: could not run shell command: %m", argv[0]);
return false;
}