]>
git.ipfire.org Git - thirdparty/systemd.git/blob - src/machine/operation.c
2 This file is part of systemd.
4 Copyright 2016 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 #include "alloc-util.h"
22 #include "operation.h"
23 #include "process-util.h"
25 static int operation_done(sd_event_source
*s
, const siginfo_t
*si
, void *userdata
) {
26 _cleanup_(sd_bus_error_free
) sd_bus_error error
= SD_BUS_ERROR_NULL
;
27 Operation
*o
= userdata
;
33 log_debug("Operating " PID_FMT
" is now complete with with code=%s status=%i",
35 sigchld_code_to_string(si
->si_code
), si
->si_status
);
39 if (si
->si_code
!= CLD_EXITED
) {
40 r
= sd_bus_error_setf(&error
, SD_BUS_ERROR_FAILED
, "Child died abnormally.");
44 if (si
->si_status
!= EXIT_SUCCESS
) {
45 if (read(o
->errno_fd
, &r
, sizeof(r
)) == sizeof(r
))
46 r
= sd_bus_error_set_errnof(&error
, r
, "%m");
48 r
= sd_bus_error_setf(&error
, SD_BUS_ERROR_FAILED
, "Child failed.");
53 r
= sd_bus_reply_method_return(o
->message
, NULL
);
55 log_error_errno(r
, "Failed to reply to message: %m");
61 r
= sd_bus_reply_method_error(o
->message
, &error
);
63 log_error_errno(r
, "Failed to reply to message: %m");
69 int operation_new(Manager
*m
, pid_t child
, sd_bus_message
*message
, int errno_fd
) {
73 o
= new0(Operation
, 1);
77 r
= sd_event_add_child(m
->event
, &o
->event_source
, child
, WEXITED
, operation_done
, o
);
84 o
->message
= sd_bus_message_ref(message
);
85 o
->errno_fd
= errno_fd
;
87 LIST_PREPEND(operations
, m
->operations
, o
);
91 log_debug("Started new operation " PID_FMT
".", child
);
93 /* At this point we took ownership of both the child and the errno file descriptor! */
98 Operation
*operation_free(Operation
*o
) {
102 sd_event_source_unref(o
->event_source
);
104 safe_close(o
->errno_fd
);
107 (void) sigkill_wait(&o
->pid
);
109 sd_bus_message_unref(o
->message
);
112 LIST_REMOVE(operations
, o
->manager
->operations
, o
);
113 o
->manager
->n_operations
--;