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author | Michal Privoznik <mprivozn@redhat.com> | 2018-07-03 11:51:14 +0200 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-07-06 18:39:19 +0200 |
commit | 2729d79d4993099782002c9a218de1fc12c32c69 (patch) | |
tree | 1e8819da3494a302bf26bcc7c5efb3a3cccdeb89 /scsi | |
parent | ee8c13b81474e002db083e9692b11c0e106a9c7f (diff) | |
download | qemu-2729d79d4993099782002c9a218de1fc12c32c69.zip qemu-2729d79d4993099782002c9a218de1fc12c32c69.tar.gz qemu-2729d79d4993099782002c9a218de1fc12c32c69.tar.bz2 |
pr-helper: Rework socket path handling
When reviewing Paolo's pr-helper patches I've noticed couple of
problems:
1) socket_path needs to be calculated at two different places
(one for printing out help, the other if socket activation is NOT
used),
2) even though the default socket_path is allocated in
compute_default_paths() it is the only default path the function
handles. For instance, pidfile is allocated outside of this
function. And yet again, at different places than 1)
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Message-Id: <c791ba035f26ea957e8f3602e3009b621769b1ba.1530611283.git.mprivozn@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scsi')
-rw-r--r-- | scsi/qemu-pr-helper.c | 36 |
1 files changed, 10 insertions, 26 deletions
diff --git a/scsi/qemu-pr-helper.c b/scsi/qemu-pr-helper.c index c89a446..1528a71 100644 --- a/scsi/qemu-pr-helper.c +++ b/scsi/qemu-pr-helper.c @@ -76,14 +76,12 @@ static int gid = -1; static void compute_default_paths(void) { - if (!socket_path) { - socket_path = qemu_get_local_state_pathname("run/qemu-pr-helper.sock"); - } + socket_path = qemu_get_local_state_pathname("run/qemu-pr-helper.sock"); + pidfile = qemu_get_local_state_pathname("run/qemu-pr-helper.pid"); } static void usage(const char *name) { - compute_default_paths(); (printf) ( "Usage: %s [OPTIONS] FILE\n" "Persistent Reservation helper program for QEMU\n" @@ -841,19 +839,6 @@ static gboolean accept_client(QIOChannel *ioc, GIOCondition cond, gpointer opaqu return TRUE; } - -/* - * Check socket parameters compatibility when socket activation is used. - */ -static const char *socket_activation_validate_opts(void) -{ - if (socket_path != NULL) { - return "Unix socket can't be set when using socket activation"; - } - - return NULL; -} - static void termsig_handler(int signum) { atomic_cmpxchg(&state, RUNNING, TERMINATE); @@ -927,6 +912,7 @@ int main(int argc, char **argv) char *trace_file = NULL; bool daemonize = false; bool pidfile_specified = false; + bool socket_path_specified = false; unsigned socket_activation; struct sigaction sa_sigterm; @@ -943,12 +929,14 @@ int main(int argc, char **argv) qemu_add_opts(&qemu_trace_opts); qemu_init_exec_dir(argv[0]); - pidfile = qemu_get_local_state_pathname("run/qemu-pr-helper.pid"); + compute_default_paths(); while ((ch = getopt_long(argc, argv, sopt, lopt, &opt_ind)) != -1) { switch (ch) { case 'k': - socket_path = optarg; + g_free(socket_path); + socket_path = g_strdup(optarg); + socket_path_specified = true; if (socket_path[0] != '/') { error_report("socket path must be absolute"); exit(EXIT_FAILURE); @@ -1039,10 +1027,9 @@ int main(int argc, char **argv) socket_activation = check_socket_activation(); if (socket_activation == 0) { SocketAddress saddr; - compute_default_paths(); saddr = (SocketAddress){ .type = SOCKET_ADDRESS_TYPE_UNIX, - .u.q_unix.path = g_strdup(socket_path) + .u.q_unix.path = socket_path, }; server_ioc = qio_channel_socket_new(); if (qio_channel_socket_listen_sync(server_ioc, &saddr, &local_err) < 0) { @@ -1050,12 +1037,10 @@ int main(int argc, char **argv) error_report_err(local_err); return 1; } - g_free(saddr.u.q_unix.path); } else { /* Using socket activation - check user didn't use -p etc. */ - const char *err_msg = socket_activation_validate_opts(); - if (err_msg != NULL) { - error_report("%s", err_msg); + if (socket_path_specified) { + error_report("Unix socket can't be set when using socket activation"); exit(EXIT_FAILURE); } @@ -1072,7 +1057,6 @@ int main(int argc, char **argv) error_get_pretty(local_err)); exit(EXIT_FAILURE); } - socket_path = NULL; } if (qemu_init_main_loop(&local_err)) { |