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09d46cfd41
systemd/src/import/importd.c
Lennart Poettering 09d46cfd41 importd: minor log improvements
2015-01-22 17:50:50 +01:00

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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2015 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <sys/prctl.h>
#include "sd-bus.h"
#include "util.h"
#include "strv.h"
#include "bus-util.h"
#include "bus-common-errors.h"
#include "def.h"
#include "import-util.h"
typedef struct Transfer Transfer;
typedef struct Manager Manager;
typedef enum TransferType {
TRANSFER_TAR,
TRANSFER_RAW,
TRANSFER_DKR,
_TRANSFER_TYPE_MAX,
_TRANSFER_TYPE_INVALID = -1,
} TransferType;
struct Transfer {
Manager *manager;
uint32_t id;
char *object_path;
TransferType type;
ImportVerify verify;
char *remote;
char *local;
bool force_local;
char *dkr_index_url;
pid_t pid;
int log_fd;
char log_message[LINE_MAX];
size_t log_message_size;
sd_event_source *pid_event_source;
sd_event_source *log_event_source;
unsigned n_canceled;
};
struct Manager {
sd_event *event;
sd_bus *bus;
uint32_t current_transfer_id;
Hashmap *transfers;
Hashmap *polkit_registry;
};
#define TRANSFERS_MAX 64
static const char* const transfer_type_table[_TRANSFER_TYPE_MAX] = {
[TRANSFER_TAR] = "tar",
[TRANSFER_RAW] = "raw",
[TRANSFER_DKR] = "dkr",
};
DEFINE_PRIVATE_STRING_TABLE_LOOKUP(transfer_type, TransferType);
static Transfer *transfer_unref(Transfer *t) {
if (!t)
return NULL;
if (t->manager)
hashmap_remove(t->manager->transfers, UINT32_TO_PTR(t->id));
sd_event_source_unref(t->pid_event_source);
sd_event_source_unref(t->log_event_source);
free(t->remote);
free(t->local);
free(t->dkr_index_url);
free(t->object_path);
if (t->pid > 0) {
(void) kill_and_sigcont(t->pid, SIGKILL);
(void) wait_for_terminate(t->pid, NULL);
}
safe_close(t->log_fd);
free(t);
return NULL;
}
DEFINE_TRIVIAL_CLEANUP_FUNC(Transfer*, transfer_unref);
static int transfer_new(Manager *m, Transfer **ret) {
_cleanup_(transfer_unrefp) Transfer *t = NULL;
uint32_t id;
int r;
assert(m);
assert(ret);
if (hashmap_size(m->transfers) >= TRANSFERS_MAX)
return -E2BIG;
r = hashmap_ensure_allocated(&m->transfers, &trivial_hash_ops);
if (r < 0)
return r;
t = new0(Transfer, 1);
if (!t)
return -ENOMEM;
t->type = _TRANSFER_TYPE_INVALID;
t->log_fd = -1;
id = m->current_transfer_id + 1;
if (asprintf(&t->object_path, "/org/freedesktop/import1/transfer/_%" PRIu32, id) < 0)
return -ENOMEM;
r = hashmap_put(m->transfers, UINT32_TO_PTR(id), t);
if (r < 0)
return r;
m->current_transfer_id = id;
t->manager = m;
t->id = id;
*ret = t;
t = NULL;
return 0;
}
static void transfer_send_log_line(Transfer *t, const char *line) {
int r, priority = LOG_INFO;
assert(t);
assert(line);
syslog_parse_priority(&line, &priority, true);
log_full(priority, "(transfer%" PRIu32 ") %s", t->id, line);
r = sd_bus_emit_signal(
t->manager->bus,
t->object_path,
"org.freedesktop.import1.Transfer",
"LogMessage",
"us",
priority,
line);
if (r < 0)
log_error_errno(r, "Cannot emit message: %m");
}
static void transfer_send_logs(Transfer *t, bool flush) {
assert(t);
/* Try to send out all log messages, if we can. But if we
* can't we remove the messages from the buffer, but don't
* fail */
while (t->log_message_size > 0) {
_cleanup_free_ char *n = NULL;
char *e;
if (t->log_message_size >= sizeof(t->log_message))
e = t->log_message + sizeof(t->log_message);
else {
char *a, *b;
a = memchr(t->log_message, 0, t->log_message_size);
b = memchr(t->log_message, '\n', t->log_message_size);
if (a && b)
e = a < b ? a : b;
else if (a)
e = a;
else
e = b;
}
if (!e) {
if (!flush)
return;
e = t->log_message + t->log_message_size;
}
n = strndup(t->log_message, e - t->log_message);
/* Skip over NUL and newlines */
while (e < t->log_message + t->log_message_size && (*e == 0 || *e == '\n'))
e++;
memmove(t->log_message, e, t->log_message + sizeof(t->log_message) - e);
t->log_message_size -= e - t->log_message;
if (!n) {
log_oom();
continue;
}
if (isempty(n))
continue;
transfer_send_log_line(t, n);
}
}
static int transfer_finalize(Transfer *t, bool success) {
int r;
assert(t);
transfer_send_logs(t, true);
r = sd_bus_emit_signal(
t->manager->bus,
"/org/freedesktop/import1",
"org.freedesktop.import1.Manager",
"TransferRemoved",
"uos",
t->id,
t->object_path,
success ? "done" :
t->n_canceled > 0 ? "canceled" : "failed");
if (r < 0)
log_error_errno(r, "Cannot emit message: %m");
transfer_unref(t);
return 0;
}
static int transfer_cancel(Transfer *t) {
int r;
assert(t);
r = kill_and_sigcont(t->pid, t->n_canceled < 3 ? SIGTERM : SIGKILL);
if (r < 0)
return r;
t->n_canceled++;
return 0;
}
static int transfer_on_pid(sd_event_source *s, const siginfo_t *si, void *userdata) {
Transfer *t = userdata;
bool success = false;
assert(s);
assert(t);
if (si->si_code == CLD_EXITED) {
if (si->si_status != 0)
log_error("Import process failed with exit code %i.", si->si_status);
else {
log_debug("Import process succeeded.");
success = true;
}
} else if (si->si_code == CLD_KILLED ||
si->si_code == CLD_DUMPED)
log_error("Import process terminated by signal %s.", signal_to_string(si->si_status));
else
log_error("Import process failed due to unknown reason.");
t->pid = 0;
return transfer_finalize(t, success);
}
static int transfer_on_log(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
Transfer *t = userdata;
ssize_t l;
assert(s);
assert(t);
l = read(fd, t->log_message + t->log_message_size, sizeof(t->log_message) - t->log_message_size);
if (l <= 0) {
/* EOF/read error. We just close the pipe here, and
* close the watch, waiting for the SIGCHLD to arrive,
* before we do anything else. */
if (l < 0)
log_error_errno(errno, "Failed to read log message: %m");
t->log_event_source = sd_event_source_unref(t->log_event_source);
return 0;
}
t->log_message_size += l;
transfer_send_logs(t, false);
return 0;
}
static int transfer_start(Transfer *t) {
_cleanup_close_pair_ int pipefd[2] = { -1, -1 };
int r;
assert(t);
assert(t->pid <= 0);
if (pipe2(pipefd, O_CLOEXEC) < 0)
return -errno;
t->pid = fork();
if (t->pid < 0)
return -errno;
if (t->pid == 0) {
const char *cmd[] = {
"systemd-import",
t->type == TRANSFER_TAR ? "pull-tar" :
t->type == TRANSFER_RAW ? "pull-raw" :
"pull-dkr",
"--verify",
NULL, /* verify argument */
NULL, /* maybe --force */
NULL, /* maybe --dkr-index-url */
NULL, /* the actual URL */
NULL, /* remote */
NULL, /* local */
NULL
};
int null_fd;
unsigned k = 3;
/* Child */
reset_all_signal_handlers();
reset_signal_mask();
assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
pipefd[0] = safe_close(pipefd[0]);
if (dup2(pipefd[1], STDOUT_FILENO) != STDOUT_FILENO) {
log_error_errno(errno, "Failed to dup2() fd: %m");
_exit(EXIT_FAILURE);
}
if (dup2(pipefd[1], STDERR_FILENO) != STDERR_FILENO) {
log_error_errno(errno, "Failed to dup2() fd: %m");
_exit(EXIT_FAILURE);
}
if (pipefd[1] != STDOUT_FILENO && pipefd[1] != STDERR_FILENO)
pipefd[1] = safe_close(pipefd[1]);
null_fd = open("/dev/null", O_RDONLY|O_NOCTTY);
if (null_fd < 0) {
log_error_errno(errno, "Failed to open /dev/null: %m");
_exit(EXIT_FAILURE);
}
if (dup2(null_fd, STDIN_FILENO) != STDIN_FILENO) {
log_error_errno(errno, "Failed to dup2() fd: %m");
_exit(EXIT_FAILURE);
}
if (null_fd != STDIN_FILENO)
safe_close(null_fd);
fd_cloexec(STDIN_FILENO, false);
fd_cloexec(STDOUT_FILENO, false);
fd_cloexec(STDERR_FILENO, false);
putenv((char*) "SYSTEMD_LOG_TARGET=console-prefixed");
cmd[k++] = import_verify_to_string(t->verify);
if (t->force_local)
cmd[k++] = "--force";
if (t->dkr_index_url) {
cmd[k++] = "--dkr-index-url";
cmd[k++] = t->dkr_index_url;
}
cmd[k++] = t->remote;
if (t->local)
cmd[k++] = t->local;
cmd[k] = NULL;
execv(SYSTEMD_IMPORT_PATH, (char * const *) cmd);
log_error_errno(errno, "Failed to execute import tool: %m");
_exit(EXIT_FAILURE);
}
pipefd[1] = safe_close(pipefd[1]);
t->log_fd = pipefd[0];
pipefd[0] = -1;
r = sd_event_add_child(t->manager->event, &t->pid_event_source, t->pid, WEXITED, transfer_on_pid, t);
if (r < 0)
return r;
r = sd_event_add_io(t->manager->event, &t->log_event_source, t->log_fd, EPOLLIN, transfer_on_log, t);
if (r < 0)
return r;
/* Make sure always process logging before SIGCHLD */
r = sd_event_source_set_priority(t->log_event_source, SD_EVENT_PRIORITY_NORMAL -5);
if (r < 0)
return r;
r = sd_bus_emit_signal(
t->manager->bus,
"/org/freedesktop/import1",
"org.freedesktop.import1.Manager",
"TransferNew",
"uo",
t->id,
t->object_path);
if (r < 0)
return r;
return 0;
}
static Manager *manager_unref(Manager *m) {
Transfer *t;
if (!m)
return NULL;
while ((t = hashmap_first(m->transfers)))
transfer_unref(t);
hashmap_free(m->transfers);
bus_verify_polkit_async_registry_free(m->polkit_registry);
sd_bus_close(m->bus);
sd_bus_unref(m->bus);
sd_event_unref(m->event);
free(m);
return NULL;
}
DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_unref);
static int manager_new(Manager **ret) {
_cleanup_(manager_unrefp) Manager *m = NULL;
int r;
assert(ret);
m = new0(Manager, 1);
if (!m)
return -ENOMEM;
r = sd_event_default(&m->event);
if (r < 0)
return r;
sd_event_set_watchdog(m->event, true);
r = sd_bus_default_system(&m->bus);
if (r < 0)
return r;
*ret = m;
m = NULL;
return 0;
}
static Transfer *manager_find(Manager *m, TransferType type, const char *dkr_index_url, const char *remote) {
Transfer *t;
Iterator i;
assert(m);
assert(type >= 0);
assert(type < _TRANSFER_TYPE_MAX);
HASHMAP_FOREACH(t, m->transfers, i) {
if (t->type == type &&
streq_ptr(t->remote, remote) &&
streq_ptr(t->dkr_index_url, dkr_index_url))
return t;
}
return NULL;
}
static int method_pull_tar_or_raw(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) {
_cleanup_(transfer_unrefp) Transfer *t = NULL;
const char *remote, *local, *verify, *object;
Manager *m = userdata;
ImportVerify v;
TransferType type;
int force, r;
uint32_t id;
assert(bus);
assert(msg);
assert(m);
r = bus_verify_polkit_async(
msg,
CAP_SYS_ADMIN,
"org.freedesktop.import1.pull",
false,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = sd_bus_message_read(msg, "sssb", &remote, &local, &verify, &force);
if (r < 0)
return r;
if (!http_url_is_valid(remote))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "URL %s is invalid", remote);
if (isempty(local))
local = NULL;
else if (!machine_name_is_valid(local))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
if (isempty(verify))
v = IMPORT_VERIFY_SIGNATURE;
else
v = import_verify_from_string(verify);
if (v < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify);
type = streq_ptr(sd_bus_message_get_member(msg), "PullTar") ? TRANSFER_TAR : TRANSFER_RAW;
if (manager_find(m, type, NULL, remote))
return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote);
r = transfer_new(m, &t);
if (r < 0)
return r;
t->type = type;
t->verify = v;
t->force_local = force;
t->remote = strdup(remote);
if (!t->remote)
return -ENOMEM;
t->local = strdup(local);
if (!t->local)
return -ENOMEM;
r = transfer_start(t);
if (r < 0)
return r;
object = t->object_path;
id = t->id;
t = NULL;
return sd_bus_reply_method_return(msg, "uo", id, object);
}
static int method_pull_dkr(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) {
_cleanup_(transfer_unrefp) Transfer *t = NULL;
const char *index_url, *remote, *tag, *local, *verify, *object;
Manager *m = userdata;
ImportVerify v;
int force, r;
uint32_t id;
assert(bus);
assert(msg);
assert(m);
r = bus_verify_polkit_async(
msg,
CAP_SYS_ADMIN,
"org.freedesktop.import1.pull",
false,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = sd_bus_message_read(msg, "sssssb", &index_url, &remote, &tag, &local, &verify, &force);
if (r < 0)
return r;
if (isempty(index_url))
index_url = DEFAULT_DKR_INDEX_URL;
if (!index_url)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Index URL must be specified.");
if (!http_url_is_valid(index_url))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Index URL %s is invalid", index_url);
if (!dkr_name_is_valid(remote))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Remote name %s is not valid", remote);
if (isempty(tag))
tag = "latest";
else if (!dkr_tag_is_valid(tag))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Tag %s is not valid", tag);
if (isempty(local))
local = NULL;
else if (!machine_name_is_valid(local))
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Local name %s is invalid", local);
if (isempty(verify))
v = IMPORT_VERIFY_SIGNATURE;
else
v = import_verify_from_string(verify);
if (v < 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unknown verification mode %s", verify);
if (v != IMPORT_VERIFY_NO)
return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "DKR does not support verification.");
if (manager_find(m, TRANSFER_DKR, index_url, remote))
return sd_bus_error_setf(error, BUS_ERROR_TRANSFER_IN_PROGRESS, "Transfer for %s already in progress.", remote);
r = transfer_new(m, &t);
if (r < 0)
return r;
t->type = TRANSFER_DKR;
t->verify = v;
t->force_local = force;
t->dkr_index_url = strdup(index_url);
if (!t->dkr_index_url)
return -ENOMEM;
t->remote = strjoin(remote, ":", tag, NULL);
if (!t->remote)
return -ENOMEM;
t->local = strdup(local);
if (!t->local)
return -ENOMEM;
r = transfer_start(t);
if (r < 0)
return r;
object = t->object_path;
id = t->id;
t = NULL;
return sd_bus_reply_method_return(msg, "uo", id, object);
}
static int method_list_transfers(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) {
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
Manager *m = userdata;
Transfer *t;
Iterator i;
int r;
assert(bus);
assert(msg);
assert(m);
r = sd_bus_message_new_method_return(msg, &reply);
if (r < 0)
return r;
r = sd_bus_message_open_container(reply, 'a', "(ussso)");
if (r < 0)
return r;
HASHMAP_FOREACH(t, m->transfers, i) {
r = sd_bus_message_append(
reply,
"(ussso)",
t->id,
transfer_type_to_string(t->type),
t->remote,
t->local,
t->object_path);
if (r < 0)
return r;
}
r = sd_bus_message_close_container(reply);
if (r < 0)
return r;
return sd_bus_send(bus, reply, NULL);
}
static int method_cancel(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) {
Transfer *t = userdata;
int r;
assert(bus);
assert(msg);
assert(t);
r = bus_verify_polkit_async(
msg,
CAP_SYS_ADMIN,
"org.freedesktop.import1.pull",
false,
&t->manager->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = transfer_cancel(t);
if (r < 0)
return r;
return sd_bus_reply_method_return(msg, NULL);
}
static int method_cancel_transfer(sd_bus *bus, sd_bus_message *msg, void *userdata, sd_bus_error *error) {
Manager *m = userdata;
Transfer *t;
uint32_t id;
int r;
assert(bus);
assert(msg);
assert(m);
r = bus_verify_polkit_async(
msg,
CAP_SYS_ADMIN,
"org.freedesktop.import1.pull",
false,
&m->polkit_registry,
error);
if (r < 0)
return r;
if (r == 0)
return 1; /* Will call us back */
r = sd_bus_message_read(msg, "u", &id);
if (r < 0)
return r;
if (id <= 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid transfer id");
t = hashmap_get(m->transfers, UINT32_TO_PTR(id));
if (!t)
return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_TRANSFER, "No transfer by id %" PRIu32, id);
r = transfer_cancel(t);
if (r < 0)
return r;
return sd_bus_reply_method_return(msg, NULL);
}
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, transfer_type, TransferType);
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_verify, import_verify, ImportVerify);
static const sd_bus_vtable transfer_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_PROPERTY("Id", "u", NULL, offsetof(Transfer, id), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Local", "s", NULL, offsetof(Transfer, local), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Remote", "s", NULL, offsetof(Transfer, remote), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Transfer, type), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_PROPERTY("Verify", "s", property_get_verify, offsetof(Transfer, verify), SD_BUS_VTABLE_PROPERTY_CONST),
SD_BUS_METHOD("Cancel", NULL, NULL, method_cancel, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("LogMessage", "us", 0),
SD_BUS_VTABLE_END,
};
static const sd_bus_vtable manager_vtable[] = {
SD_BUS_VTABLE_START(0),
SD_BUS_METHOD("PullTar", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("PullRaw", "sssb", "uo", method_pull_tar_or_raw, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("PullDkr", "sssssb", "uo", method_pull_dkr, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ListTransfers", NULL, "a(ussso)", method_list_transfers, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("CancelTransfer", "u", NULL, method_cancel_transfer, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_SIGNAL("TransferNew", "uo", 0),
SD_BUS_SIGNAL("TransferRemoved", "uos", 0),
SD_BUS_VTABLE_END,
};
static int transfer_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
Manager *m = userdata;
Transfer *t;
const char *p;
uint32_t id;
int r;
assert(bus);
assert(path);
assert(interface);
assert(found);
assert(m);
p = startswith(path, "/org/freedesktop/import1/transfer/_");
if (!p)
return 0;
r = safe_atou32(p, &id);
if (r < 0 || id == 0)
return 0;
t = hashmap_get(m->transfers, UINT32_TO_PTR(id));
if (!t)
return 0;
*found = t;
return 1;
}
static int transfer_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
_cleanup_strv_free_ char **l = NULL;
Manager *m = userdata;
Transfer *t;
unsigned k = 0;
Iterator i;
l = new0(char*, hashmap_size(m->transfers) + 1);
if (!l)
return -ENOMEM;
HASHMAP_FOREACH(t, m->transfers, i) {
l[k] = strdup(t->object_path);
if (!l[k])
return -ENOMEM;
k++;
}
*nodes = l;
l = NULL;
return 1;
}
static int manager_add_bus_objects(Manager *m) {
int r;
assert(m);
r = sd_bus_add_object_vtable(m->bus, NULL, "/org/freedesktop/import1", "org.freedesktop.import1.Manager", manager_vtable, m);
if (r < 0)
return log_error_errno(r, "Failed to register object: %m");
r = sd_bus_add_fallback_vtable(m->bus, NULL, "/org/freedesktop/import1/transfer", "org.freedesktop.import1.Transfer", transfer_vtable, transfer_object_find, m);
if (r < 0)
return log_error_errno(r, "Failed to register object: %m");
r = sd_bus_add_node_enumerator(m->bus, NULL, "/org/freedesktop/import1/transfer", transfer_node_enumerator, m);
if (r < 0)
return log_error_errno(r, "Failed to add transfer enumerator: %m");
r = sd_bus_request_name(m->bus, "org.freedesktop.import1", 0);
if (r < 0)
return log_error_errno(r, "Failed to register name: %m");
r = sd_bus_attach_event(m->bus, m->event, 0);
if (r < 0)
return log_error_errno(r, "Failed to attach bus to event loop: %m");
return 0;
}
static bool manager_check_idle(void *userdata) {
Manager *m = userdata;
return hashmap_isempty(m->transfers);
}
static int manager_run(Manager *m) {
assert(m);
return bus_event_loop_with_idle(
m->event,
m->bus,
"org.freedesktop.import1",
DEFAULT_EXIT_USEC,
manager_check_idle,
m);
}
int main(int argc, char *argv[]) {
_cleanup_(manager_unrefp) Manager *m = NULL;
int r;
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
if (argc != 1) {
log_error("This program takes no arguments.");
r = -EINVAL;
goto finish;
}
assert_se(sigprocmask_many(SIG_BLOCK, SIGCHLD, -1) >= 0);
r = manager_new(&m);
if (r < 0) {
log_error_errno(r, "Failed to allocate manager object: %m");
goto finish;
}
r = manager_add_bus_objects(m);
if (r < 0)
goto finish;
r = manager_run(m);
if (r < 0) {
log_error_errno(r, "Failed to run event loop: %m");
goto finish;
}
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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