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authorLennart Poettering <lennart@poettering.net>2015-01-22 17:31:59 +0100
committerLennart Poettering <lennart@poettering.net>2015-01-22 17:50:50 +0100
commit6adf7b5e46d32376868feef0197e6ada352aa6f2 (patch)
tree2b3523ec0ab26aba36fe454f053ff5e76833885f
parent813c65c34beae2eed1f93d9317f97d7e806389f5 (diff)
machinectl: when downloading an image, clarify that C-c will not cancel the download, but continue it in the background
-rw-r--r--src/machine/machinectl.c72
1 files changed, 41 insertions, 31 deletions
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index 8e2780e9c8..5a42f26eaf 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -1733,19 +1733,14 @@ static int enable_machine(int argc, char *argv[], void *userdata) {
return 0;
}
-typedef struct PullContext {
- const char *path;
- int result;
-} PullContext;
-
static int match_log_message(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- PullContext *c = userdata;
- const char *line;
+ const char **our_path = userdata, *line;
unsigned priority;
int r;
assert(bus);
assert(m);
+ assert(our_path);
r = sd_bus_message_read(m, "us", &priority, &line);
if (r < 0) {
@@ -1753,7 +1748,7 @@ static int match_log_message(sd_bus *bus, sd_bus_message *m, void *userdata, sd_
return 0;
}
- if (!streq_ptr(c->path, sd_bus_message_get_path(m)))
+ if (!streq_ptr(*our_path, sd_bus_message_get_path(m)))
return 0;
if (arg_quiet && LOG_PRI(priority) >= LOG_INFO)
@@ -1764,14 +1759,13 @@ static int match_log_message(sd_bus *bus, sd_bus_message *m, void *userdata, sd_
}
static int match_transfer_removed(sd_bus *bus, sd_bus_message *m, void *userdata, sd_bus_error *error) {
- PullContext *c = userdata;
- const char *path, *result;
+ const char **our_path = userdata, *path, *result;
uint32_t id;
int r;
assert(bus);
assert(m);
- assert(c);
+ assert(our_path);
r = sd_bus_message_read(m, "uos", &id, &path, &result);
if (r < 0) {
@@ -1779,10 +1773,21 @@ static int match_transfer_removed(sd_bus *bus, sd_bus_message *m, void *userdata
return 0;
}
- if (!streq_ptr(c->path, path))
+ if (!streq_ptr(*our_path, path))
return 0;
- c->result = streq_ptr(result, "done");
+ sd_event_exit(sd_bus_get_event(bus), !streq_ptr(result, "done"));
+ return 0;
+}
+
+static int transfer_signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) {
+ assert(s);
+ assert(si);
+
+ if (!arg_quiet)
+ log_info("Continuing download in the background. Use \"machinectl cancel-transfer %" PRIu32 "\" to arbort transfer.", PTR_TO_UINT32(userdata));
+
+ sd_event_exit(sd_event_source_get_event(s), EINTR);
return 0;
}
@@ -1790,9 +1795,8 @@ static int pull_image_common(sd_bus *bus, sd_bus_message *m) {
_cleanup_bus_slot_unref_ sd_bus_slot *slot_job_removed = NULL, *slot_log_message = NULL;
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
- PullContext c = {
- .result = -1,
- };
+ _cleanup_event_unref_ sd_event* event = NULL;
+ const char *path = NULL;
uint32_t id;
int r;
@@ -1801,6 +1805,14 @@ static int pull_image_common(sd_bus *bus, sd_bus_message *m) {
polkit_agent_open_if_enabled();
+ r = sd_event_default(&event);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get event loop: %m");
+
+ r = sd_bus_attach_event(bus, event, 0);
+ if (r < 0)
+ return log_error_errno(r, "Failed to attach bus to event loop: %m");
+
r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
if (r < 0)
return bus_log_create_error(r);
@@ -1813,7 +1825,7 @@ static int pull_image_common(sd_bus *bus, sd_bus_message *m) {
"interface='org.freedesktop.import1.Manager',"
"member='TransferRemoved',"
"path='/org/freedesktop/import1'",
- match_transfer_removed, &c);
+ match_transfer_removed, &path);
if (r < 0)
return log_error_errno(r, "Failed to install match: %m");
@@ -1824,7 +1836,7 @@ static int pull_image_common(sd_bus *bus, sd_bus_message *m) {
"sender='org.freedesktop.import1',"
"interface='org.freedesktop.import1.Transfer',"
"member='LogMessage'",
- match_log_message, &c);
+ match_log_message, &path);
if (r < 0)
return log_error_errno(r, "Failed to install match: %m");
@@ -1834,25 +1846,23 @@ static int pull_image_common(sd_bus *bus, sd_bus_message *m) {
return r;
}
- r = sd_bus_message_read(reply, "uo", &id, &c.path);
+ r = sd_bus_message_read(reply, "uo", &id, &path);
if (r < 0)
return bus_log_parse_error(r);
- for (;;) {
- r = sd_bus_process(bus, NULL);
- if (r < 0)
- return r;
+ sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1);
- /* The match sets this to NULL when we are done */
- if (c.result >= 0)
- break;
+ if (!arg_quiet)
+ log_info("Enqueued transfer job %u. Press C-c to continue download in background.", id);
- r = sd_bus_wait(bus, (uint64_t) -1);
- if (r < 0)
- return r;
- }
+ sd_event_add_signal(event, NULL, SIGINT, transfer_signal_handler, UINT32_TO_PTR(id));
+ sd_event_add_signal(event, NULL, SIGTERM, transfer_signal_handler, UINT32_TO_PTR(id));
+
+ r = sd_event_loop(event);
+ if (r < 0)
+ return log_error_errno(r, "Failed to run event loop: %m");
- return c.result ? 0 : -EINVAL;
+ return -r;
}
static int pull_tar(int argc, char *argv[], void *userdata) {