Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 1 | /* |
| 2 | * QEMU storage daemon |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * Copyright (c) 2019 Kevin Wolf <kwolf@redhat.com> |
| 6 | * |
| 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | * of this software and associated documentation files (the "Software"), to deal |
| 9 | * in the Software without restriction, including without limitation the rights |
| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | * copies of the Software, and to permit persons to whom the Software is |
| 12 | * furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included in |
| 15 | * all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | * THE SOFTWARE. |
| 24 | */ |
| 25 | |
| 26 | #include "qemu/osdep.h" |
| 27 | |
| 28 | #include <getopt.h> |
| 29 | |
| 30 | #include "block/block.h" |
| 31 | #include "crypto/init.h" |
| 32 | |
| 33 | #include "qapi/error.h" |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 34 | #include "qapi/qapi-visit-block-core.h" |
| 35 | #include "qapi/qapi-commands-block-core.h" |
| 36 | #include "qapi/qobject-input-visitor.h" |
| 37 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 38 | #include "qemu-common.h" |
| 39 | #include "qemu-version.h" |
| 40 | #include "qemu/config-file.h" |
| 41 | #include "qemu/error-report.h" |
| 42 | #include "qemu/log.h" |
| 43 | #include "qemu/main-loop.h" |
| 44 | #include "qemu/module.h" |
| 45 | |
| 46 | #include "trace/control.h" |
| 47 | |
| 48 | static void help(void) |
| 49 | { |
| 50 | printf( |
| 51 | "Usage: %s [options]\n" |
| 52 | "QEMU storage daemon\n" |
| 53 | "\n" |
| 54 | " -h, --help display this help and exit\n" |
| 55 | " -T, --trace [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
| 56 | " specify tracing options\n" |
| 57 | " -V, --version output version information and exit\n" |
| 58 | "\n" |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 59 | " --blockdev [driver=]<driver>[,node-name=<N>][,discard=ignore|unmap]\n" |
| 60 | " [,cache.direct=on|off][,cache.no-flush=on|off]\n" |
| 61 | " [,read-only=on|off][,auto-read-only=on|off]\n" |
| 62 | " [,force-share=on|off][,detect-zeroes=on|off|unmap]\n" |
| 63 | " [,driver specific parameters...]\n" |
| 64 | " configure a block backend\n" |
| 65 | "\n" |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 66 | QEMU_HELP_BOTTOM "\n", |
| 67 | error_get_progname()); |
| 68 | } |
| 69 | |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 70 | enum { |
| 71 | OPTION_BLOCKDEV = 256, |
| 72 | }; |
| 73 | |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 74 | static void process_options(int argc, char *argv[]) |
| 75 | { |
| 76 | int c; |
| 77 | |
| 78 | static const struct option long_options[] = { |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 79 | {"blockdev", required_argument, NULL, OPTION_BLOCKDEV}, |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 80 | {"help", no_argument, NULL, 'h'}, |
| 81 | {"trace", required_argument, NULL, 'T'}, |
| 82 | {"version", no_argument, NULL, 'V'}, |
| 83 | {0, 0, 0, 0} |
| 84 | }; |
| 85 | |
| 86 | /* |
| 87 | * In contrast to the system emulator, options are processed in the order |
| 88 | * they are given on the command lines. This means that things must be |
| 89 | * defined first before they can be referenced in another option. |
| 90 | */ |
| 91 | while ((c = getopt_long(argc, argv, "hT:V", long_options, NULL)) != -1) { |
| 92 | switch (c) { |
| 93 | case '?': |
| 94 | exit(EXIT_FAILURE); |
| 95 | case 'h': |
| 96 | help(); |
| 97 | exit(EXIT_SUCCESS); |
| 98 | case 'T': |
| 99 | { |
| 100 | char *trace_file = trace_opt_parse(optarg); |
| 101 | trace_init_file(trace_file); |
| 102 | g_free(trace_file); |
| 103 | break; |
| 104 | } |
| 105 | case 'V': |
| 106 | printf("qemu-storage-daemon version " |
| 107 | QEMU_FULL_VERSION "\n" QEMU_COPYRIGHT "\n"); |
| 108 | exit(EXIT_SUCCESS); |
Kevin Wolf | 14837c6 | 2020-02-24 15:29:54 +0100 | [diff] [blame] | 109 | case OPTION_BLOCKDEV: |
| 110 | { |
| 111 | Visitor *v; |
| 112 | BlockdevOptions *options; |
| 113 | |
| 114 | v = qobject_input_visitor_new_str(optarg, "driver", |
| 115 | &error_fatal); |
| 116 | |
| 117 | visit_type_BlockdevOptions(v, NULL, &options, &error_fatal); |
| 118 | visit_free(v); |
| 119 | |
| 120 | qmp_blockdev_add(options, &error_fatal); |
| 121 | qapi_free_BlockdevOptions(options); |
| 122 | break; |
| 123 | } |
Kevin Wolf | f353415 | 2020-02-24 15:29:49 +0100 | [diff] [blame] | 124 | default: |
| 125 | g_assert_not_reached(); |
| 126 | } |
| 127 | } |
| 128 | if (optind != argc) { |
| 129 | error_report("Unexpected argument: %s", argv[optind]); |
| 130 | exit(EXIT_FAILURE); |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | int main(int argc, char *argv[]) |
| 135 | { |
| 136 | #ifdef CONFIG_POSIX |
| 137 | signal(SIGPIPE, SIG_IGN); |
| 138 | #endif |
| 139 | |
| 140 | error_init(argv[0]); |
| 141 | qemu_init_exec_dir(argv[0]); |
| 142 | |
| 143 | module_call_init(MODULE_INIT_QOM); |
| 144 | module_call_init(MODULE_INIT_TRACE); |
| 145 | qemu_add_opts(&qemu_trace_opts); |
| 146 | qcrypto_init(&error_fatal); |
| 147 | bdrv_init(); |
| 148 | |
| 149 | if (!trace_init_backends()) { |
| 150 | return EXIT_FAILURE; |
| 151 | } |
| 152 | qemu_set_log(LOG_TRACE); |
| 153 | |
| 154 | qemu_init_main_loop(&error_fatal); |
| 155 | process_options(argc, argv); |
| 156 | |
| 157 | return EXIT_SUCCESS; |
| 158 | } |