mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Use extensible buffers to assemble command lines

Browse Source 
This makes use of StringInfo to assemble command lines, instead of
using fixed-size buffers and the (remote) possibility of "command too
long" errors.  Also makes the code a bit simpler.

This covers the test driver programs pg_regress and
pg_isolation_regress.

Similar to the changes done for pg_rewind in a33e17f210.

Discussion: https://www.postgresql.org/message-id/2be4fee5-738f-4749-b9f8-b452032c7ade%40eisentraut.org
This commit is contained in:
Peter Eisentraut 2024-02-11 09:08:35 +01:00
parent 4697454686
commit e70abd67c3
2 changed files with 31 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
src/test/isolation/isolation_main.c
View File

@ -12,6 +12,7 @@
#include "postgres_fe.h"
#include "lib/stringinfo.h"
#include "pg_regress.h"
char saved_argv0[MAXPGPATH];
@ -34,8 +35,7 @@ isolation_start_test(const char *testname,
char infile[MAXPGPATH];
char outfile[MAXPGPATH];
char expectfile[MAXPGPATH];
char psql_cmd[MAXPGPATH * 3];
size_t offset = 0;
StringInfoData psql_cmd;
char *appnameenv;
/* need to do the path lookup here, check isolation_init() for details */
@ -75,34 +75,23 @@ isolation_start_test(const char *testname,
add_stringlist_item(resultfiles, outfile);
add_stringlist_item(expectfiles, expectfile);
if (launcher)
{
offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
"%s ", launcher);
if (offset >= sizeof(psql_cmd))
{
fprintf(stderr, _("command too long\n"));
exit(2);
}
}
initStringInfo(&psql_cmd);
offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
"\"%s\" \"dbname=%s\" < \"%s\" > \"%s\" 2>&1",
isolation_exec,
dblist->str,
infile,
outfile);
if (offset >= sizeof(psql_cmd))
{
fprintf(stderr, _("command too long\n"));
exit(2);
}
if (launcher)
appendStringInfo(&psql_cmd, "%s ", launcher);
appendStringInfo(&psql_cmd,
"\"%s\" \"dbname=%s\" < \"%s\" > \"%s\" 2>&1",
isolation_exec,
dblist->str,
infile,
outfile);
appnameenv = psprintf("isolation/%s", testname);
setenv("PGAPPNAME", appnameenv, 1);
free(appnameenv);
pid = spawn_process(psql_cmd);
pid = spawn_process(psql_cmd.data);
if (pid == INVALID_PID)
{
@ -113,6 +102,8 @@ isolation_start_test(const char *testname,
unsetenv("PGAPPNAME");
pfree(psql_cmd.data);
return pid;
}

41
src/test/regress/pg_regress_main.c
View File

@ -18,6 +18,7 @@
#include "postgres_fe.h"
#include "lib/stringinfo.h"
#include "pg_regress.h"
/*
@ -34,8 +35,7 @@ psql_start_test(const char *testname,
char infile[MAXPGPATH];
char outfile[MAXPGPATH];
char expectfile[MAXPGPATH];
char psql_cmd[MAXPGPATH * 3];
size_t offset = 0;
StringInfoData psql_cmd;
char *appnameenv;
/*
@ -62,40 +62,29 @@ psql_start_test(const char *testname,
add_stringlist_item(resultfiles, outfile);
add_stringlist_item(expectfiles, expectfile);
initStringInfo(&psql_cmd);
if (launcher)
{
offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
"%s ", launcher);
if (offset >= sizeof(psql_cmd))
{
fprintf(stderr, _("command too long\n"));
exit(2);
}
}
appendStringInfo(&psql_cmd, "%s ", launcher);
/*
* Use HIDE_TABLEAM to hide different AMs to allow to use regression tests
* against different AMs without unnecessary differences.
*/
offset += snprintf(psql_cmd + offset, sizeof(psql_cmd) - offset,
"\"%s%spsql\" -X -a -q -d \"%s\" %s < \"%s\" > \"%s\" 2>&1",
bindir ? bindir : "",
bindir ? "/" : "",
dblist->str,
"-v HIDE_TABLEAM=on -v HIDE_TOAST_COMPRESSION=on",
infile,
outfile);
if (offset >= sizeof(psql_cmd))
{
fprintf(stderr, _("command too long\n"));
exit(2);
}
appendStringInfo(&psql_cmd,
"\"%s%spsql\" -X -a -q -d \"%s\" %s < \"%s\" > \"%s\" 2>&1",
bindir ? bindir : "",
bindir ? "/" : "",
dblist->str,
"-v HIDE_TABLEAM=on -v HIDE_TOAST_COMPRESSION=on",
infile,
outfile);
appnameenv = psprintf("pg_regress/%s", testname);
setenv("PGAPPNAME", appnameenv, 1);
free(appnameenv);
pid = spawn_process(psql_cmd);
pid = spawn_process(psql_cmd.data);
if (pid == INVALID_PID)
{
@ -106,6 +95,8 @@ psql_start_test(const char *testname,
unsetenv("PGAPPNAME");
pfree(psql_cmd.data);
return pid;
}