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pg_regress: Save errno in emit_tap_output_v() and switch to %m

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emit_tap_output_v() includes some fprintf() calls for some output
related to the TAP protocol, that may clobber errno and break %m.  This
commit makes the logging of pg_regress smarter by saving errno before
restoring it in vfprintf() where the input strings are used, removing
the need for strerror().  All logs are switched to %m rather than
strerror(), shaving some code.

This was not a problem until now as pg_regress.c did not use %m, but the
change is simple enough that we have no reason to not support this
placeholder, and that will avoid future mistakes if new logs that
include %m are added.

Author: Dagfinn Ilmari Mannsåker
Reviewed-by: Peter Eisentraunt, Michael Paquier
Discussion: https://postgr.es/m/87sf13jhuw.fsf@wibble.ilmari.org
This commit is contained in:
Michael Paquier 2024-04-04 11:33:07 +09:00
parent 71b66171d0
commit 85230a247c
1 changed files with 34 additions and 50 deletions
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84
src/test/regress/pg_regress.c
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@ -341,6 +341,14 @@ emit_tap_output_v(TAPtype type, const char *fmt, va_list argp)
{
va_list argp_logfile;
FILE *fp;
int save_errno;
/*
* The fprintf() calls used to output TAP-protocol elements might clobber
* errno, so save it here and restore it before vfprintf()-ing the user's
* format string, in case it contains %m placeholders.
*/
save_errno = errno;
/*
* Diagnostic output will be hidden by prove unless printed to stderr. The
@ -379,9 +387,13 @@ emit_tap_output_v(TAPtype type, const char *fmt, va_list argp)
if (logfile)
fprintf(logfile, "# ");
}
errno = save_errno;
vfprintf(fp, fmt, argp);
if (logfile)
{
errno = save_errno;
vfprintf(logfile, fmt, argp_logfile);
}
/*
* If we are entering into a note with more details to follow, register
@ -492,10 +504,7 @@ make_temp_sockdir(void)
temp_sockdir = mkdtemp(template);
if (temp_sockdir == NULL)
{
bail("could not create directory \"%s\": %s",
template, strerror(errno));
}
bail("could not create directory \"%s\": %m", template);
/* Stage file names for remove_temp(). Unsafe in a signal handler. */
UNIXSOCK_PATH(sockself, port, temp_sockdir);
@ -616,8 +625,7 @@ load_resultmap(void)
/* OK if it doesn't exist, else complain */
if (errno == ENOENT)
return;
bail("could not open file \"%s\" for reading: %s",
buf, strerror(errno));
bail("could not open file \"%s\" for reading: %m", buf);
}
while (fgets(buf, sizeof(buf), f))
@ -1046,10 +1054,7 @@ config_sspi_auth(const char *pgdata, const char *superuser_name)
#define CW(cond) \
do { \
if (!(cond)) \
{ \
bail("could not write to file \"%s\": %s", \
fname, strerror(errno)); \
} \
bail("could not write to file \"%s\": %m", fname); \
} while (0)
res = snprintf(fname, sizeof(fname), "%s/pg_hba.conf", pgdata);
@ -1064,8 +1069,7 @@ config_sspi_auth(const char *pgdata, const char *superuser_name)
hba = fopen(fname, "w");
if (hba == NULL)
{
bail("could not open file \"%s\" for writing: %s",
fname, strerror(errno));
bail("could not open file \"%s\" for writing: %m", fname);
}
CW(fputs("# Configuration written by config_sspi_auth()\n", hba) >= 0);
CW(fputs("host all all 127.0.0.1/32 sspi include_realm=1 map=regress\n",
@ -1079,8 +1083,7 @@ config_sspi_auth(const char *pgdata, const char *superuser_name)
ident = fopen(fname, "w");
if (ident == NULL)
{
bail("could not open file \"%s\" for writing: %s",
fname, strerror(errno));
bail("could not open file \"%s\" for writing: %m", fname);
}
CW(fputs("# Configuration written by config_sspi_auth()\n", ident) >= 0);
@ -1210,7 +1213,7 @@ spawn_process(const char *cmdline)
pid = fork();
if (pid == -1)
{
bail("could not fork: %s", strerror(errno));
bail("could not fork: %m");
}
if (pid == 0)
{
@ -1226,7 +1229,7 @@ spawn_process(const char *cmdline)
cmdline2 = psprintf("exec %s", cmdline);
execl(shellprog, shellprog, "-c", cmdline2, (char *) NULL);
/* Not using the normal bail() here as we want _exit */
bail_noatexit("could not exec \"%s\": %s", shellprog, strerror(errno));
bail_noatexit("could not exec \"%s\": %m", shellprog);
}
/* in parent */
return pid;
@ -1262,8 +1265,7 @@ file_size(const char *file)
if (!f)
{
diag("could not open file \"%s\" for reading: %s",
file, strerror(errno));
diag("could not open file \"%s\" for reading: %m", file);
return -1;
}
fseek(f, 0, SEEK_END);
@ -1284,8 +1286,7 @@ file_line_count(const char *file)
if (!f)
{
diag("could not open file \"%s\" for reading: %s",
file, strerror(errno));
diag("could not open file \"%s\" for reading: %m", file);
return -1;
}
while ((c = fgetc(f)) != EOF)
@ -1325,9 +1326,7 @@ static void
make_directory(const char *dir)
{
if (mkdir(dir, S_IRWXU | S_IRWXG | S_IRWXO) < 0)
{
bail("could not create directory \"%s\": %s", dir, strerror(errno));
}
bail("could not create directory \"%s\": %m", dir);
}
/*
@ -1456,10 +1455,7 @@ results_differ(const char *testname, const char *resultsfile, const char *defaul
alt_expectfile = get_alternative_expectfile(expectfile, i);
if (!alt_expectfile)
{
bail("Unable to check secondary comparison files: %s",
strerror(errno));
}
bail("Unable to check secondary comparison files: %m");
if (!file_exists(alt_expectfile))
{
@ -1572,9 +1568,7 @@ wait_for_tests(PID_TYPE * pids, int *statuses, instr_time *stoptimes,
p = wait(&exit_status);
if (p == INVALID_PID)
{
bail("failed to wait for subprocesses: %s", strerror(errno));
}
bail("failed to wait for subprocesses: %m");
#else
DWORD exit_status;
int r;
@ -1664,10 +1658,7 @@ run_schedule(const char *schedule, test_start_function startfunc,
scf = fopen(schedule, "r");
if (!scf)
{
bail("could not open file \"%s\" for reading: %s",
schedule, strerror(errno));
}
bail("could not open file \"%s\" for reading: %m", schedule);
while (fgets(scbuf, sizeof(scbuf), scf))
{
@ -1931,20 +1922,15 @@ open_result_files(void)
logfilename = pg_strdup(file);
logfile = fopen(logfilename, "w");
if (!logfile)
{
bail("could not open file \"%s\" for writing: %s",
logfilename, strerror(errno));
}
bail("could not open file \"%s\" for writing: %m", logfilename);
/* create the diffs file as empty */
snprintf(file, sizeof(file), "%s/regression.diffs", outputdir);
difffilename = pg_strdup(file);
difffile = fopen(difffilename, "w");
if (!difffile)
{
bail("could not open file \"%s\" for writing: %s",
difffilename, strerror(errno));
}
bail("could not open file \"%s\" for writing: %m", difffilename);
/* we don't keep the diffs file open continuously */
fclose(difffile);
@ -2406,10 +2392,8 @@ regression_main(int argc, char *argv[],
snprintf(buf, sizeof(buf), "%s/data/postgresql.conf", temp_instance);
pg_conf = fopen(buf, "a");
if (pg_conf == NULL)
{
bail("could not open \"%s\" for adding extra config: %s",
buf, strerror(errno));
}
bail("could not open \"%s\" for adding extra config: %m", buf);
fputs("\n# Configuration added by pg_regress\n\n", pg_conf);
fputs("log_autovacuum_min_duration = 0\n", pg_conf);
fputs("log_checkpoints = on\n", pg_conf);
@ -2427,8 +2411,8 @@ regression_main(int argc, char *argv[],
extra_conf = fopen(temp_config, "r");
if (extra_conf == NULL)
{
bail("could not open \"%s\" to read extra config: %s",
temp_config, strerror(errno));
bail("could not open \"%s\" to read extra config: %m",
temp_config);
}
while (fgets(line_buf, sizeof(line_buf), extra_conf) != NULL)
fputs(line_buf, pg_conf);
@ -2503,7 +2487,7 @@ regression_main(int argc, char *argv[],
outputdir);
postmaster_pid = spawn_process(buf);
if (postmaster_pid == INVALID_PID)
bail("could not spawn postmaster: %s", strerror(errno));
bail("could not spawn postmaster: %m");
/*
* Wait till postmaster is able to accept connections; normally takes
@ -2566,7 +2550,7 @@ regression_main(int argc, char *argv[],
*/
#ifndef WIN32
if (kill(postmaster_pid, SIGKILL) != 0 && errno != ESRCH)
bail("could not kill failed postmaster: %s", strerror(errno));
bail("could not kill failed postmaster: %m");
#else
if (TerminateProcess(postmaster_pid, 255) == 0)
bail("could not kill failed postmaster: error code %lu",