/* we need to fill in only namespace information */
int ns_read(pid_t pid, proc_t *ns_task)
{
struct stat st;
char buff[50];
int i, rc = 0;
for (i = 0; i < NUM_NS; i++) {
snprintf(buff, sizeof(buff), "/proc/%i/ns/%s", pid,
get_ns_name(i));
if (stat(buff, &st)) {
if (errno != ENOENT)
rc = errno;
ns_task->ns[i] = 0;
continue;
}
ns_task->ns[i] = st.st_ino;
}
return rc;
}
/*
* CREATE COLLATION
*/
void define_collation(struct list * names, struct list * parameters)
{
char *collName;
oid_t collNamespace;
acl_result_e aclresult;
struct list_cell *pl;
DefElem *fromEl = NULL;
DefElem *localeEl = NULL;
DefElem *lccollateEl = NULL;
DefElem *lcctypeEl = NULL;
char *collcollate = NULL;
char *collctype = NULL;
oid_t newoid;
collNamespace = qualified_name_get_creation_ns(names, &collName);
aclresult = ns_aclcheck(collNamespace, get_uid(), ACL_CREATE);
if (aclresult != ACLCHECK_OK)
aclcheck_error(aclresult, ACL_KIND_NAMESPACE, get_ns_name(collNamespace));
foreach(pl, parameters) {
DefElem* defel = (DefElem *) lfirst(pl);
DefElem** defelp;
if (pg_strcasecmp(defel->defname, "from") == 0)
defelp = &fromEl;
else if (pg_strcasecmp(defel->defname, "locale") == 0)
defelp = &localeEl;
else if (pg_strcasecmp(defel->defname, "lc_collate") == 0)
defelp = &lccollateEl;
else if (pg_strcasecmp(defel->defname, "lc_ctype") == 0)
defelp = &lcctypeEl;
else {
ereport(ERROR, (
errcode(E_SYNTAX_ERROR),
errmsg("collation attribute \"%s\" not recognized",
defel->defname)));
break;
}
*defelp = defel;
}
static char *format_type_internal(oid_t type_oid, int32 typemod, bool typemod_given, bool allow_invalid)
{
bool with_typemod = typemod_given && (typemod >= 0);
struct heap_tuple * tuple;
Form_pg_type typeform;
oid_t array_base_type;
bool is_array;
char *buf;
if (type_oid == INVALID_OID && allow_invalid)
return pstrdup("-");
tuple = search_syscache1(TYPEOID, OID_TO_D(type_oid));
if (!HT_VALID(tuple)) {
if (allow_invalid)
return pstrdup("???");
else
elog(ERROR, "cache lookup failed for type %u", type_oid);
}
typeform = (Form_pg_type) GET_STRUCT(tuple);
/*
* Check if it's a regular (variable length) array type. Fixed-length
* array types such as "name" shouldn't get deconstructed. As of
* Postgres 8.1, rather than checking typlen we check the toast
* property, and don't deconstruct "plain storage" array types --- this
* is because we don't want to show oid_vector_s as oid[].
*/
array_base_type = typeform->typelem;
if (array_base_type != INVALID_OID && typeform->typstorage != 'p') {
/* Switch our attention to the array element type */
release_syscache(tuple);
tuple = search_syscache1(TYPEOID, OID_TO_D(array_base_type));
if (!HT_VALID(tuple)) {
if (allow_invalid)
return pstrdup("???[]");
else
elog(ERROR, "cache lookup failed for type %u", type_oid);
}
typeform = (Form_pg_type) GET_STRUCT(tuple);
type_oid = array_base_type;
is_array = true;
} else {
is_array = false;
}
/*
* See if we want to special-case the output for certain built-in types.
* Note that these special cases should all correspond to special
* productions in gram.y, to ensure that the type name will be taken as
* a system type, not a user type of the same name.
*
* If we do not provide a special-case output here, the type name will
* be handled the same way as a user type name --- in particular, it
* will be double-quoted if it matches any lexer keyword.
*
* This behavior is essential for some cases, such as types "bit" and
* "char".
*/
buf = NULL; /* flag for no special case */
switch (type_oid) {
case BITOID:
if (with_typemod) {
buf = printTypmod("bit", typemod, typeform->typmodout);
} else if (typemod_given) {
/*
* bit with typmod -1 is not the same as BIT, which
* means BIT(1) per SQL spec. Report it as the quoted
* typename so that parser will not assign a bogus
* typmod.
*/
} else {
buf = pstrdup("bit");
}
break;
case BOOLOID:
buf = pstrdup("boolean");
break;
case BPCHAROID:
if (with_typemod) {
buf = printTypmod("character", typemod, typeform->typmodout);
} else if (typemod_given) {
/*
* bpchar with typmod -1 is not the same as CHARACTER,
* which means CHARACTER(1) per SQL spec. Report it as
* bpchar so that parser will not assign a bogus typmod.
*/
} else {
buf = pstrdup("character");
}
break;
case FLOAT4OID:
buf = pstrdup("real");
break;
case FLOAT8OID:
buf = pstrdup("double precision");
break;
case INT2OID:
buf = pstrdup("smallint");
break;
case INT4OID:
buf = pstrdup("integer");
break;
case INT8OID:
buf = pstrdup("bigint");
break;
case NUMERICOID:
if (with_typemod)
buf = printTypmod("numeric", typemod, typeform->typmodout);
else
buf = pstrdup("numeric");
break;
case INTERVALOID:
if (with_typemod)
buf = printTypmod("interval", typemod, typeform->typmodout);
else
buf = pstrdup("interval");
break;
case TIMEOID:
if (with_typemod)
buf = printTypmod("time", typemod, typeform->typmodout);
else
buf = pstrdup("time without time zone");
break;
case TIMETZOID:
if (with_typemod)
buf = printTypmod("time", typemod, typeform->typmodout);
else
buf = pstrdup("time with time zone");
break;
case TIMESTAMPOID:
if (with_typemod)
buf = printTypmod("timestamp", typemod, typeform->typmodout);
else
buf = pstrdup("timestamp without time zone");
break;
case TIMESTAMPTZOID:
if (with_typemod)
buf = printTypmod("timestamp", typemod, typeform->typmodout);
else
buf = pstrdup("timestamp with time zone");
break;
case VARBITOID:
if (with_typemod)
buf = printTypmod("bit varying", typemod, typeform->typmodout);
else
buf = pstrdup("bit varying");
break;
case VARCHAROID:
if (with_typemod)
buf = printTypmod("character varying", typemod, typeform->typmodout);
else
buf = pstrdup("character varying");
break;
}
if (buf == NULL) {
/*
* Default handling: report the name as it appears in the
* catalog. Here, we must qualify the name if it is not visible
* in the search path, and we must double-quote it if it's not
* a standard identifier or if it matches any keyword.
*/
char *nspname;
char *typname;
if (type_is_visible(type_oid))
nspname = NULL;
else
nspname = get_ns_name(typeform->typnamespace);
typname = NAME_TO_STR(typeform->typname);
buf = quote_qualified_identifier(nspname, typname);
if (with_typemod)
buf = printTypmod(buf, typemod, typeform->typmodout);
}
if (is_array)
buf = psnprintf(strlen(buf) + 3, "%s[]", buf);
release_syscache(tuple);
return buf;
}
