python, iotests: remove socket_scm_helper

It's not used anymore, now.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20210923004938.3999963-11-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>

python/qemu/machine/machine.py

@@ -98,7 +98,6 @@ class QEMUMachine:
                  name: Optional[str] = None,
                  base_temp_dir: str = "/var/tmp",
                  monitor_address: Optional[SocketAddrT] = None,
-                 socket_scm_helper: Optional[str] = None,
                  sock_dir: Optional[str] = None,
                  drain_console: bool = False,
                  console_log: Optional[str] = None,
@@ -113,7 +112,6 @@ class QEMUMachine:
         @param name: prefix for socket and log file names (default: qemu-PID)
         @param base_temp_dir: default location where temp files are created
         @param monitor_address: address for QMP monitor
-        @param socket_scm_helper: helper program, required for send_fd_scm()
         @param sock_dir: where to create socket (defaults to base_temp_dir)
         @param drain_console: (optional) True to drain console socket to buffer
         @param console_log: (optional) path to console log file
@@ -134,7 +132,6 @@ class QEMUMachine:
         self._base_temp_dir = base_temp_dir
         self._sock_dir = sock_dir or self._base_temp_dir
         self._log_dir = log_dir
-        self._socket_scm_helper = socket_scm_helper
 
         if monitor_address is not None:
             self._monitor_address = monitor_address

python/qemu/machine/qtest.py

@@ -115,7 +115,6 @@ class QEMUQtestMachine(QEMUMachine):
                  wrapper: Sequence[str] = (),
                  name: Optional[str] = None,
                  base_temp_dir: str = "/var/tmp",
-                 socket_scm_helper: Optional[str] = None,
                  sock_dir: Optional[str] = None,
                  qmp_timer: Optional[float] = None):
         # pylint: disable=too-many-arguments
@@ -126,7 +125,6 @@ class QEMUQtestMachine(QEMUMachine):
             sock_dir = base_temp_dir
         super().__init__(binary, args, wrapper=wrapper, name=name,
                          base_temp_dir=base_temp_dir,
-                         socket_scm_helper=socket_scm_helper,
                          sock_dir=sock_dir, qmp_timer=qmp_timer)
         self._qtest: Optional[QEMUQtestProtocol] = None
         self._qtest_path = os.path.join(sock_dir, name + "-qtest.sock")

tests/Makefile.include

@@ -148,7 +148,6 @@ check-acceptance: check-venv $(TESTS_RESULTS_DIR) get-vm-images
 check:
 
 ifeq ($(CONFIG_TOOLS)$(CONFIG_POSIX),yy)
-QEMU_IOTESTS_HELPERS-$(CONFIG_LINUX) = tests/qemu-iotests/socket_scm_helper$(EXESUF)
 check: check-block
 export PYTHON
 check-block: $(SRC_PATH)/tests/check-block.sh qemu-img$(EXESUF) \

tests/meson.build

@@ -67,10 +67,6 @@ if have_tools and 'CONFIG_VHOST_USER' in config_host and 'CONFIG_LINUX' in confi
              dependencies: [qemuutil, vhost_user])
 endif
 
-if have_system and 'CONFIG_POSIX' in config_host
-  subdir('qemu-iotests')
-endif
-
 test('decodetree', sh,
      args: [ files('decode/check.sh'), config_host['PYTHON'], files('../scripts/decodetree.py') ],
      workdir: meson.current_source_dir() / 'decode',

tests/qemu-iotests/iotests.py

@@ -107,8 +107,6 @@ if os.environ.get('VALGRIND_QEMU') == "y" and \
 
     qemu_valgrind = ['valgrind', valgrind_logfile, '--error-exitcode=99']
 
-socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
-
 luks_default_secret_object = 'secret,id=keysec0,data=' + \
                              os.environ.get('IMGKEYSECRET', '')
 luks_default_key_secret_opt = 'key-secret=keysec0'
@@ -598,7 +596,6 @@ class VM(qtest.QEMUQtestMachine):
         super().__init__(qemu_prog, qemu_opts, wrapper=wrapper,
                          name=name,
                          base_temp_dir=test_dir,
-                         socket_scm_helper=socket_scm_helper,
                          sock_dir=sock_dir, qmp_timer=timer)
         self._num_drives = 0
 

tests/qemu-iotests/meson.build

@@ -1,5 +0,0 @@
-if 'CONFIG_LINUX' in config_host
-    socket_scm_helper = executable('socket_scm_helper', 'socket_scm_helper.c')
-else
-    socket_scm_helper = []
-endif

tests/qemu-iotests/socket_scm_helper.c

@@ -1,136 +0,0 @@
-/*
- * SCM_RIGHTS with unix socket help program for test
- *
- * Copyright IBM, Inc. 2013
- *
- * Authors:
- *  Wenchao Xia    <xiawenc@linux.vnet.ibm.com>
- *
- * This work is licensed under the terms of the GNU LGPL, version 2 or later.
- * See the COPYING.LIB file in the top-level directory.
- */
-
-#include "qemu/osdep.h"
-#include <sys/socket.h>
-#include <sys/un.h>
-
-/* #define SOCKET_SCM_DEBUG */
-
-/*
- * @fd and @fd_to_send will not be checked for validation in this function,
- * a blank will be sent as iov data to notify qemu.
- */
-static int send_fd(int fd, int fd_to_send)
-{
-    struct msghdr msg;
-    struct iovec iov[1];
-    int ret;
-    char control[CMSG_SPACE(sizeof(int))];
-    struct cmsghdr *cmsg;
-
-    memset(&msg, 0, sizeof(msg));
-    memset(control, 0, sizeof(control));
-
-    /* Send a blank to notify qemu */
-    iov[0].iov_base = (void *)" ";
-    iov[0].iov_len = 1;
-
-    msg.msg_iov = iov;
-    msg.msg_iovlen = 1;
-
-    msg.msg_control = control;
-    msg.msg_controllen = sizeof(control);
-
-    cmsg = CMSG_FIRSTHDR(&msg);
-
-    cmsg->cmsg_len = CMSG_LEN(sizeof(int));
-    cmsg->cmsg_level = SOL_SOCKET;
-    cmsg->cmsg_type = SCM_RIGHTS;
-    memcpy(CMSG_DATA(cmsg), &fd_to_send, sizeof(int));
-
-    do {
-        ret = sendmsg(fd, &msg, 0);
-    } while (ret < 0 && errno == EINTR);
-
-    if (ret < 0) {
-        fprintf(stderr, "Failed to send msg, reason: %s\n", strerror(errno));
-    }
-
-    return ret;
-}
-
-/* Convert string to fd number. */
-static int get_fd_num(const char *fd_str, bool silent)
-{
-    int sock;
-    char *err;
-
-    errno = 0;
-    sock = strtol(fd_str, &err, 10);
-    if (errno) {
-        if (!silent) {
-            fprintf(stderr, "Failed in strtol for socket fd, reason: %s\n",
-                    strerror(errno));
-        }
-        return -1;
-    }
-    if (!*fd_str || *err || sock < 0) {
-        if (!silent) {
-            fprintf(stderr, "bad numerical value for socket fd '%s'\n", fd_str);
-        }
-        return -1;
-    }
-
-    return sock;
-}
-
-/*
- * To make things simple, the caller needs to specify:
- * 1. socket fd.
- * 2. path of the file to be sent.
- */
-int main(int argc, char **argv, char **envp)
-{
-    int sock, fd, ret;
-
-#ifdef SOCKET_SCM_DEBUG
-    int i;
-    for (i = 0; i < argc; i++) {
-        fprintf(stderr, "Parameter %d: %s\n", i, argv[i]);
-    }
-#endif
-
-    if (argc != 3) {
-        fprintf(stderr,
-                "Usage: %s < socket-fd > < file-path >\n",
-                argv[0]);
-        return EXIT_FAILURE;
-    }
-
-
-    sock = get_fd_num(argv[1], false);
-    if (sock < 0) {
-        return EXIT_FAILURE;
-    }
-
-    fd = get_fd_num(argv[2], true);
-    if (fd < 0) {
-        /* Now only open a file in readonly mode for test purpose. If more
-           precise control is needed, use python script in file operation, which
-           is supposed to fork and exec this program. */
-        fd = open(argv[2], O_RDONLY);
-        if (fd < 0) {
-            fprintf(stderr, "Failed to open file '%s'\n", argv[2]);
-            return EXIT_FAILURE;
-        }
-    }
-
-    ret = send_fd(sock, fd);
-    if (ret < 0) {
-        close(fd);
-        return EXIT_FAILURE;
-    }
-
-    close(fd);
-    return EXIT_SUCCESS;
-}

tests/qemu-iotests/testenv.py

@@ -68,7 +68,7 @@ class TestEnv(ContextManager['TestEnv']):
     env_variables = ['PYTHONPATH', 'TEST_DIR', 'SOCK_DIR', 'SAMPLE_IMG_DIR',
                      'OUTPUT_DIR', 'PYTHON', 'QEMU_PROG', 'QEMU_IMG_PROG',
                      'QEMU_IO_PROG', 'QEMU_NBD_PROG', 'QSD_PROG',
-                     'SOCKET_SCM_HELPER', 'QEMU_OPTIONS', 'QEMU_IMG_OPTIONS',
+                     'QEMU_OPTIONS', 'QEMU_IMG_OPTIONS',
                      'QEMU_IO_OPTIONS', 'QEMU_IO_OPTIONS_NO_FMT',
                      'QEMU_NBD_OPTIONS', 'IMGOPTS', 'IMGFMT', 'IMGPROTO',
                      'AIOMODE', 'CACHEMODE', 'VALGRIND_QEMU',
@@ -140,7 +140,6 @@ class TestEnv(ContextManager['TestEnv']):
         """Init binary path variables:
              PYTHON (for bash tests)
              QEMU_PROG, QEMU_IMG_PROG, QEMU_IO_PROG, QEMU_NBD_PROG, QSD_PROG
-             SOCKET_SCM_HELPER
         """
         self.python = sys.executable
 
@@ -174,10 +173,6 @@ class TestEnv(ContextManager['TestEnv']):
             if not isxfile(b):
                 sys.exit('Not executable: ' + b)
 
-        helper_path = os.path.join(self.build_iotests, 'socket_scm_helper')
-        if isxfile(helper_path):
-            self.socket_scm_helper = helper_path  # SOCKET_SCM_HELPER
-
     def __init__(self, imgfmt: str, imgproto: str, aiomode: str,
                  cachemode: Optional[str] = None,
                  imgopts: Optional[str] = None,
@@ -303,7 +298,6 @@ IMGPROTO      -- {IMGPROTO}
 PLATFORM      -- {platform}
 TEST_DIR      -- {TEST_DIR}
 SOCK_DIR      -- {SOCK_DIR}
-SOCKET_SCM_HELPER -- {SOCKET_SCM_HELPER}
 GDB_OPTIONS   -- {GDB_OPTIONS}
 VALGRIND_QEMU -- {VALGRIND_QEMU}
 PRINT_QEMU_OUTPUT -- {PRINT_QEMU}