posix adding posix_fpathconf.

follow-up on GH-10238 but with the file descriptor flavor.

Author: devnexen

ext/posix/posix.c

@@ -1225,3 +1225,35 @@ PHP_FUNCTION(posix_pathconf)
 
 	RETURN_LONG(ret);
 }
+
+PHP_FUNCTION(posix_fpathconf)
+{
+	zend_long name, ret, fd;
+	zval *z_fd;
+
+	ZEND_PARSE_PARAMETERS_START(2, 2)
+		Z_PARAM_ZVAL(z_fd)
+		Z_PARAM_LONG(name);
+	ZEND_PARSE_PARAMETERS_END();
+
+	if (Z_TYPE_P(z_fd) == IS_RESOURCE) {
+		if (!php_posix_stream_get_fd(z_fd, &fd)) {
+			RETURN_FALSE;
+		}
+	} else {
+		if (!zend_parse_arg_long(z_fd, &fd, /* is_null */ false, /* check_null */ false, /* arg_num */ 1)) {
+			zend_argument_type_error(1, "must be of type int/resource, %s given",
+				zend_zval_type_name(z_fd));
+			RETURN_THROWS();
+		}
+	}
+
+	ret = fpathconf(fd, name);
+
+	if (ret < 0 && errno != 0) {
+		POSIX_G(last_error) = errno;
+		RETURN_FALSE;
+	}
+
+	RETURN_LONG(ret);
+}

ext/posix/posix.stub.php

@@ -429,3 +429,5 @@ function posix_initgroups(string $username, int $group_id): bool {}
 function posix_sysconf(int $conf_id): int {}
 
 function posix_pathconf(string $path, int $name): int|false {}
+/** @param resource|int $file_descriptor */
+function posix_fpathconf($file_descriptor, int $name): int|false {}

ext/posix/posix_arginfo.h

@@ -0,0 +1,22 @@
+--TEST--
+Test posix_fpathconf
+--EXTENSIONS--
+posix
+--FILE--
+<?php
+var_dump(posix_fpathconf(-1, POSIX_PC_PATH_MAX));
+var_dump(posix_errno() != 0);
+try {
+	posix_fpathconf("string arg", POSIX_PC_PATH_MAX);
+} catch (\TypeError $e) {
+	echo $e->getMessage() . "\n";
+}
+$fd = fopen(sys_get_temp_dir(), "r");
+var_dump(posix_fpathconf($fd, POSIX_PC_PATH_MAX));
+fclose($fd);
+?>
+--EXPECTF--
+bool(false)
+bool(true)
+posix_fpathconf(): Argument #1 ($file_descriptor) must be of type int|resource, string given
+int(%d)