mirror of
git://git.proxmox.com/git/qemu-server.git
synced 2025-01-18 06:03:55 +03:00
e8e0fd93bf
if one would try to use -v in a systemd service, systemd would disable line buffering for stdout and no output would happen (until the buffer is full) Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
115 lines
2.8 KiB
C
115 lines
2.8 KiB
C
/*
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Copyright (C) 2018 Proxmox Server Solutions GmbH
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Copyright: qemumonitor is under GNU GPL, the GNU General Public License.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 dated June, 1991.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA.
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Author: Dominik Csapak <d.csapak@proxmox.com>
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*/
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#include <sys/syscall.h>
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#ifndef __NR_pidfd_open
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#define __NR_pidfd_open 434
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#endif
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#ifndef __NR_pidfd_send_signal
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#define __NR_pidfd_send_signal 424
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#endif
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#define VERBOSE_PRINT(...) do { if (verbose) { printf(__VA_ARGS__); fflush(stdout); } } while (0)
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static inline void log_neg(int errval, const char *msg)
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{
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if (errval < 0) {
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perror(msg);
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}
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}
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static inline void bail_neg(int errval, const char *msg)
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{
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if (errval < 0) {
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perror(msg);
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exit(EXIT_FAILURE);
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}
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}
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static inline int
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pidfd_open(pid_t pid, unsigned int flags)
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{
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return syscall(__NR_pidfd_open, pid, flags);
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}
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static inline int
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pidfd_send_signal(int pidfd, int sig, siginfo_t *info, unsigned int flags)
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{
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return syscall(__NR_pidfd_send_signal, pidfd, sig, info, flags);
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}
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typedef enum {
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CLIENT_NONE,
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CLIENT_QEMU,
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CLIENT_VZDUMP
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} ClientType;
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typedef enum {
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STATE_HANDSHAKE,
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STATE_IDLE,
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STATE_EXPECT_STATUS_RESP,
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STATE_TERMINATING
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} ClientState;
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struct Client {
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char buf[4096];
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unsigned int buflen;
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int fd;
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pid_t pid;
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ClientType type;
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ClientState state;
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// only relevant for type=CLIENT_QEMU
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struct {
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char vmid[16];
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unsigned short graceful;
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unsigned short guest;
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bool term_check_queued;
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bool backup;
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} qemu;
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// only relevant for type=CLIENT_VZDUMP
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struct {
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// vmid of referenced backup
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char vmid[16];
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} vzdump;
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};
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struct CleanupData {
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pid_t pid;
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int pidfd;
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};
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void handle_qmp_handshake(struct Client *client);
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void handle_qmp_event(struct Client *client, struct json_object *obj);
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void handle_qmp_return(struct Client *client, struct json_object *data, bool error);
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void handle_vzdump_handshake(struct Client *client, struct json_object *data);
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void handle_client(struct Client *client);
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void add_new_client(int client_fd);
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void cleanup_client(struct Client *client);
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void terminate_client(struct Client *client);
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void terminate_check(struct Client *client);
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