1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (C) 2018 Intel Corporation.
3 * All rights reserved.
4 */
5
6 #include "spdk/stdinc.h"
7
8 #include "spdk/config.h"
9 #include "spdk/env.h"
10 #include "spdk/event.h"
11 #if defined(SPDK_CONFIG_VHOST)
12 #include "spdk/vhost.h"
13 #endif
14 #if defined(SPDK_CONFIG_VFIO_USER)
15 #include "spdk/vfu_target.h"
16 #endif
17
18 #if defined(SPDK_CONFIG_VHOST) || defined(SPDK_CONFIG_VFIO_USER)
19 #define SPDK_SOCK_PATH "S:"
20 #else
21 #define SPDK_SOCK_PATH
22 #endif
23
24 static const char *g_pid_path = NULL;
25 static const char g_spdk_tgt_get_opts_string[] = "f:" SPDK_SOCK_PATH;
26
27 static void
spdk_tgt_usage(void)28 spdk_tgt_usage(void)
29 {
30 printf(" -f <file> pidfile save pid to file under given path\n");
31 #if defined(SPDK_CONFIG_VHOST) || defined(SPDK_CONFIG_VFIO_USER)
32 printf(" -S <path> directory where to create vhost/vfio-user sockets (default: pwd)\n");
33 #endif
34 }
35
36 static void
spdk_tgt_save_pid(const char * pid_path)37 spdk_tgt_save_pid(const char *pid_path)
38 {
39 FILE *pid_file;
40
41 pid_file = fopen(pid_path, "w");
42 if (pid_file == NULL) {
43 fprintf(stderr, "Couldn't create pid file '%s': %s\n", pid_path, strerror(errno));
44 exit(EXIT_FAILURE);
45 }
46
47 fprintf(pid_file, "%d\n", getpid());
48 fclose(pid_file);
49 }
50
51
52 static int
spdk_tgt_parse_arg(int ch,char * arg)53 spdk_tgt_parse_arg(int ch, char *arg)
54 {
55 switch (ch) {
56 case 'f':
57 g_pid_path = arg;
58 break;
59 #if defined(SPDK_CONFIG_VHOST) || defined(SPDK_CONFIG_VFIO_USER)
60 case 'S':
61 #ifdef SPDK_CONFIG_VHOST
62 spdk_vhost_set_socket_path(arg);
63 #endif
64 #ifdef SPDK_CONFIG_VFIO_USER
65 spdk_vfu_set_socket_path(arg);
66 #endif
67 break;
68 #endif
69 default:
70 return -EINVAL;
71 }
72 return 0;
73 }
74
75 static void
spdk_tgt_started(void * arg1)76 spdk_tgt_started(void *arg1)
77 {
78 if (g_pid_path) {
79 spdk_tgt_save_pid(g_pid_path);
80 }
81
82 if (getenv("MEMZONE_DUMP") != NULL) {
83 spdk_memzone_dump(stdout);
84 fflush(stdout);
85 }
86 }
87
88 int
main(int argc,char ** argv)89 main(int argc, char **argv)
90 {
91 struct spdk_app_opts opts = {};
92 int rc;
93
94 spdk_app_opts_init(&opts, sizeof(opts));
95 opts.name = "spdk_tgt";
96 if ((rc = spdk_app_parse_args(argc, argv, &opts, g_spdk_tgt_get_opts_string,
97 NULL, spdk_tgt_parse_arg, spdk_tgt_usage)) !=
98 SPDK_APP_PARSE_ARGS_SUCCESS) {
99 return rc;
100 }
101
102 rc = spdk_app_start(&opts, spdk_tgt_started, NULL);
103 spdk_app_fini();
104
105 return rc;
106 }
107