diff options
| -rw-r--r-- | monitor/Makefile.objs | 2 | ||||
| -rw-r--r-- | monitor/hmp.c | 1417 | ||||
| -rw-r--r-- | monitor/misc.c | 1364 | ||||
| -rw-r--r-- | monitor/monitor-internal.h | 8 | ||||
| -rw-r--r-- | monitor/trace-events | 4 |
5 files changed, 1443 insertions, 1352 deletions
diff --git a/monitor/Makefile.objs b/monitor/Makefile.objs index 1037c09ff8..bea8838acc 100644 --- a/monitor/Makefile.objs +++ b/monitor/Makefile.objs @@ -1,3 +1,3 @@ obj-y += misc.o -common-obj-y += qmp.o +common-obj-y += qmp.o hmp.o common-obj-y += qmp-cmds.o hmp-cmds.o diff --git a/monitor/hmp.c b/monitor/hmp.c new file mode 100644 index 0000000000..cbbee6477a --- /dev/null +++ b/monitor/hmp.c @@ -0,0 +1,1417 @@ +/* + * QEMU monitor + * + * Copyright (c) 2003-2004 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "qemu/osdep.h" +#include <dirent.h> +#include "monitor-internal.h" +#include "qapi/error.h" +#include "qapi/qmp/qdict.h" +#include "qapi/qmp/qnum.h" +#include "qemu/config-file.h" +#include "qemu/ctype.h" +#include "qemu/cutils.h" +#include "qemu/log.h" +#include "qemu/option.h" +#include "qemu/units.h" +#include "sysemu/block-backend.h" +#include "sysemu/sysemu.h" +#include "trace.h" + +static void monitor_command_cb(void *opaque, const char *cmdline, + void *readline_opaque) +{ + MonitorHMP *mon = opaque; + + monitor_suspend(&mon->common); + handle_hmp_command(mon, cmdline); + monitor_resume(&mon->common); +} + +void monitor_read_command(MonitorHMP *mon, int show_prompt) +{ + if (!mon->rs) { + return; + } + + readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL); + if (show_prompt) { + readline_show_prompt(mon->rs); + } +} + +int monitor_read_password(MonitorHMP *mon, ReadLineFunc *readline_func, + void *opaque) +{ + if (mon->rs) { + readline_start(mon->rs, "Password: ", 1, readline_func, opaque); + /* prompt is printed on return from the command handler */ + return 0; + } else { + monitor_printf(&mon->common, + "terminal does not support password prompting\n"); + return -ENOTTY; + } +} + +static int get_str(char *buf, int buf_size, const char **pp) +{ + const char *p; + char *q; + int c; + + q = buf; + p = *pp; + while (qemu_isspace(*p)) { + p++; + } + if (*p == '\0') { + fail: + *q = '\0'; + *pp = p; + return -1; + } + if (*p == '\"') { + p++; + while (*p != '\0' && *p != '\"') { + if (*p == '\\') { + p++; + c = *p++; + switch (c) { + case 'n': + c = '\n'; + break; + case 'r': + c = '\r'; + break; + case '\\': + case '\'': + case '\"': + break; + default: + printf("unsupported escape code: '\\%c'\n", c); + goto fail; + } + if ((q - buf) < buf_size - 1) { + *q++ = c; + } + } else { + if ((q - buf) < buf_size - 1) { + *q++ = *p; + } + p++; + } + } + if (*p != '\"') { + printf("unterminated string\n"); + goto fail; + } + p++; + } else { + while (*p != '\0' && !qemu_isspace(*p)) { + if ((q - buf) < buf_size - 1) { + *q++ = *p; + } + p++; + } + } + *q = '\0'; + *pp = p; + return 0; +} + +#define MAX_ARGS 16 + +static void free_cmdline_args(char **args, int nb_args) +{ + int i; + + assert(nb_args <= MAX_ARGS); + + for (i = 0; i < nb_args; i++) { + g_free(args[i]); + } + +} + +/* + * Parse the command line to get valid args. + * @cmdline: command line to be parsed. + * @pnb_args: location to store the number of args, must NOT be NULL. + * @args: location to store the args, which should be freed by caller, must + * NOT be NULL. + * + * Returns 0 on success, negative on failure. + * + * NOTE: this parser is an approximate form of the real command parser. Number + * of args have a limit of MAX_ARGS. If cmdline contains more, it will + * return with failure. + */ +static int parse_cmdline(const char *cmdline, + int *pnb_args, char **args) +{ + const char *p; + int nb_args, ret; + char buf[1024]; + + p = cmdline; + nb_args = 0; + for (;;) { + while (qemu_isspace(*p)) { + p++; + } + if (*p == '\0') { + break; + } + if (nb_args >= MAX_ARGS) { + goto fail; + } + ret = get_str(buf, sizeof(buf), &p); + if (ret < 0) { + goto fail; + } + args[nb_args] = g_strdup(buf); + nb_args++; + } + *pnb_args = nb_args; + return 0; + + fail: + free_cmdline_args(args, nb_args); + return -1; +} + +/* + * Can command @cmd be executed in preconfig state? + */ +static bool cmd_can_preconfig(const HMPCommand *cmd) +{ + if (!cmd->flags) { + return false; + } + + return strchr(cmd->flags, 'p'); +} + +static void help_cmd_dump_one(Monitor *mon, + const HMPCommand *cmd, + char **prefix_args, + int prefix_args_nb) +{ + int i; + + if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) { + return; + } + + for (i = 0; i < prefix_args_nb; i++) { + monitor_printf(mon, "%s ", prefix_args[i]); + } + monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help); +} + +/* @args[@arg_index] is the valid command need to find in @cmds */ +static void help_cmd_dump(Monitor *mon, const HMPCommand *cmds, + char **args, int nb_args, int arg_index) +{ + const HMPCommand *cmd; + size_t i; + + /* No valid arg need to compare with, dump all in *cmds */ + if (arg_index >= nb_args) { + for (cmd = cmds; cmd->name != NULL; cmd++) { + help_cmd_dump_one(mon, cmd, args, arg_index); + } + return; + } + + /* Find one entry to dump */ + for (cmd = cmds; cmd->name != NULL; cmd++) { + if (hmp_compare_cmd(args[arg_index], cmd->name) && + ((!runstate_check(RUN_STATE_PRECONFIG) || + cmd_can_preconfig(cmd)))) { + if (cmd->sub_table) { + /* continue with next arg */ + help_cmd_dump(mon, cmd->sub_table, + args, nb_args, arg_index + 1); + } else { + help_cmd_dump_one(mon, cmd, args, arg_index); + } + return; + } + } + + /* Command not found */ + monitor_printf(mon, "unknown command: '"); + for (i = 0; i <= arg_index; i++) { + monitor_printf(mon, "%s%s", args[i], i == arg_index ? "'\n" : " "); + } +} + +void help_cmd(Monitor *mon, const char *name) +{ + char *args[MAX_ARGS]; + int nb_args = 0; + + /* 1. parse user input */ + if (name) { + /* special case for log, directly dump and return */ + if (!strcmp(name, "log")) { + const QEMULogItem *item; + monitor_printf(mon, "Log items (comma separated):\n"); + monitor_printf(mon, "%-10s %s\n", "none", "remove all logs"); + for (item = qemu_log_items; item->mask != 0; item++) { + monitor_printf(mon, "%-10s %s\n", item->name, item->help); + } + return; + } + + if (parse_cmdline(name, &nb_args, args) < 0) { + return; + } + } + + /* 2. dump the contents according to parsed args */ + help_cmd_dump(mon, hmp_cmds, args, nb_args, 0); + + free_cmdline_args(args, nb_args); +} + +/*******************************************************************/ + +static const char *pch; +static sigjmp_buf expr_env; + +static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN +expr_error(Monitor *mon, const char *fmt, ...) +{ + va_list ap; + va_start(ap, fmt); + monitor_vprintf(mon, fmt, ap); + monitor_printf(mon, "\n"); + va_end(ap); + siglongjmp(expr_env, 1); +} + +static void next(void) +{ + if (*pch != '\0') { + pch++; + while (qemu_isspace(*pch)) { + pch++; + } + } +} + +static int64_t expr_sum(Monitor *mon); + +static int64_t expr_unary(Monitor *mon) +{ + int64_t n; + char *p; + int ret; + + switch (*pch) { + case '+': + next(); + n = expr_unary(mon); + break; + case '-': + next(); + n = -expr_unary(mon); + break; + case '~': + next(); + n = ~expr_unary(mon); + break; + case '(': + next(); + n = expr_sum(mon); + if (*pch != ')') { + expr_error(mon, "')' expected"); + } + next(); + break; + case '\'': + pch++; + if (*pch == '\0') { + expr_error(mon, "character constant expected"); + } + n = *pch; + pch++; + if (*pch != '\'') { + expr_error(mon, "missing terminating \' character"); + } + next(); + break; + case '$': + { + char buf[128], *q; + int64_t reg = 0; + + pch++; + q = buf; + while ((*pch >= 'a' && *pch <= 'z') || + (*pch >= 'A' && *pch <= 'Z') || + (*pch >= '0' && *pch <= '9') || + *pch == '_' || *pch == '.') { + if ((q - buf) < sizeof(buf) - 1) { + *q++ = *pch; + } + pch++; + } + while (qemu_isspace(*pch)) { + pch++; + } + *q = 0; + ret = get_monitor_def(®, buf); + if (ret < 0) { + expr_error(mon, "unknown register"); + } + n = reg; + } + break; + case '\0': + expr_error(mon, "unexpected end of expression"); + n = 0; + break; + default: + errno = 0; + n = strtoull(pch, &p, 0); + if (errno == ERANGE) { + expr_error(mon, "number too large"); + } + if (pch == p) { + expr_error(mon, "invalid char '%c' in expression", *p); + } + pch = p; + while (qemu_isspace(*pch)) { + pch++; + } + break; + } + return n; +} + +static int64_t expr_prod(Monitor *mon) +{ + int64_t val, val2; + int op; + + val = expr_unary(mon); + for (;;) { + op = *pch; + if (op != '*' && op != '/' && op != '%') { + break; + } + next(); + val2 = expr_unary(mon); + switch (op) { + default: + case '*': + val *= val2; + break; + case '/': + case '%': + if (val2 == 0) { + expr_error(mon, "division by zero"); + } + if (op == '/') { + val /= val2; + } else { + val %= val2; + } + break; + } + } + return val; +} + +static int64_t expr_logic(Monitor *mon) +{ + int64_t val, val2; + int op; + + val = expr_prod(mon); + for (;;) { + op = *pch; + if (op != '&' && op != '|' && op != '^') { + break; + } + next(); + val2 = expr_prod(mon); + switch (op) { + default: + case '&': + val &= val2; + break; + case '|': + val |= val2; + break; + case '^': + val ^= val2; + break; + } + } + return val; +} + +static int64_t expr_sum(Monitor *mon) +{ + int64_t val, val2; + int op; + + val = expr_logic(mon); + for (;;) { + op = *pch; + if (op != '+' && op != '-') { + break; + } + next(); + val2 = expr_logic(mon); + if (op == '+') { + val += val2; + } else { + val -= val2; + } + } + return val; +} + +static int get_expr(Monitor *mon, int64_t *pval, const char **pp) +{ + pch = *pp; + if (sigsetjmp(expr_env, 0)) { + *pp = pch; + return -1; + } + while (qemu_isspace(*pch)) { + pch++; + } + *pval = expr_sum(mon); + *pp = pch; + return 0; +} + +static int get_double(Monitor *mon, double *pval, const char **pp) +{ + const char *p = *pp; + char *tailp; + double d; + + d = strtod(p, &tailp); + if (tailp == p) { + monitor_printf(mon, "Number expected\n"); + return -1; + } + if (d != d || d - d != 0) { + /* NaN or infinity */ + monitor_printf(mon, "Bad number\n"); + return -1; + } + *pval = d; + *pp = tailp; + return 0; +} + +/* + * Store the command-name in cmdname, and return a pointer to + * the remaining of the command string. + */ +static const char *get_command_name(const char *cmdline, + char *cmdname, size_t nlen) +{ + size_t len; + const char *p, *pstart; + + p = cmdline; + while (qemu_isspace(*p)) { + p++; + } + if (*p == '\0') { + return NULL; + } + pstart = p; + while (*p != '\0' && *p != '/' && !qemu_isspace(*p)) { + p++; + } + len = p - pstart; + if (len > nlen - 1) { + len = nlen - 1; + } + memcpy(cmdname, pstart, len); + cmdname[len] = '\0'; + return p; +} + +/** + * Read key of 'type' into 'key' and return the current + * 'type' pointer. + */ +static char *key_get_info(const char *type, char **key) +{ + size_t len; + char *p, *str; + + if (*type == ',') { + type++; + } + + p = strchr(type, ':'); + if (!p) { + *key = NULL; + return NULL; + } + len = p - type; + + str = g_malloc(len + 1); + memcpy(str, type, len); + str[len] = '\0'; + + *key = str; + return ++p; +} + +static int default_fmt_format = 'x'; +static int default_fmt_size = 4; + +static int is_valid_option(const char *c, const char *typestr) +{ + char option[3]; + + option[0] = '-'; + option[1] = *c; + option[2] = '\0'; + + typestr = strstr(typestr, option); + return (typestr != NULL); +} + +static const HMPCommand *search_dispatch_table(const HMPCommand *disp_table, + const char *cmdname) +{ + const HMPCommand *cmd; + + for (cmd = disp_table; cmd->name != NULL; cmd++) { + if (hmp_compare_cmd(cmdname, cmd->name)) { + return cmd; + } + } + + return NULL; +} + +/* + * Parse command name from @cmdp according to command table @table. + * If blank, return NULL. + * Else, if no valid command can be found, report to @mon, and return + * NULL. + * Else, change @cmdp to point right behind the name, and return its + * command table entry. + * Do not assume the return value points into @table! It doesn't when + * the command is found in a sub-command table. + */ +static const HMPCommand *monitor_parse_command(MonitorHMP *hmp_mon, + const char *cmdp_start, + const char **cmdp, + HMPCommand *table) +{ + Monitor *mon = &hmp_mon->common; + const char *p; + const HMPCommand *cmd; + char cmdname[256]; + + /* extract the command name */ + p = get_command_name(*cmdp, cmdname, sizeof(cmdname)); + if (!p) { + return NULL; + } + + cmd = search_dispatch_table(table, cmdname); + if (!cmd) { + monitor_printf(mon, "unknown command: '%.*s'\n", + (int)(p - cmdp_start), cmdp_start); + return NULL; + } + if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) { + monitor_printf(mon, "Command '%.*s' not available with -preconfig " + "until after exit_preconfig.\n", + (int)(p - cmdp_start), cmdp_start); + return NULL; + } + + /* filter out following useless space */ + while (qemu_isspace(*p)) { + p++; + } + + *cmdp = p; + /* search sub command */ + if (cmd->sub_table != NULL && *p != '\0') { + return monitor_parse_command(hmp_mon, cmdp_start, cmdp, cmd->sub_table); + } + + return cmd; +} + +/* + * Parse arguments for @cmd. + * If it can't be parsed, report to @mon, and return NULL. + * Else, insert command arguments into a QDict, and return it. + * Note: On success, caller has to free the QDict structure. + */ +static QDict *monitor_parse_arguments(Monitor *mon, + const char **endp, + const HMPCommand *cmd) +{ + const char *typestr; + char *key; + int c; + const char *p = *endp; + char buf[1024]; + QDict *qdict = qdict_new(); + + /* parse the parameters */ + typestr = cmd->args_type; + for (;;) { + typestr = key_get_info(typestr, &key); + if (!typestr) { + break; + } + c = *typestr; + typestr++; + switch (c) { + case 'F': + case 'B': + case 's': + { + int ret; + + while (qemu_isspace(*p)) { + p++; + } + if (*typestr == '?') { + typestr++; + if (*p == '\0') { + /* no optional string: NULL argument */ + break; + } + } + ret = get_str(buf, sizeof(buf), &p); + if (ret < 0) { + switch (c) { + case 'F': + monitor_printf(mon, "%s: filename expected\n", + cmd->name); + break; + case 'B': + monitor_printf(mon, "%s: block device name expected\n", + cmd->name); + break; + default: + monitor_printf(mon, "%s: string expected\n", cmd->name); + break; + } + goto fail; + } + qdict_put_str(qdict, key, buf); + } + break; + case 'O': + { + QemuOptsList *opts_list; + QemuOpts *opts; + + opts_list = qemu_find_opts(key); + if (!opts_list || opts_list->desc->name) { + goto bad_type; + } + while (qemu_isspace(*p)) { + p++; + } + if (!*p) { + break; + } + if (get_str(buf, sizeof(buf), &p) < 0) { + goto fail; + } + opts = qemu_opts_parse_noisily(opts_list, buf, true); + if (!opts) { + goto fail; + } + qemu_opts_to_qdict(opts, qdict); + qemu_opts_del(opts); + } + break; + case '/': + { + int count, format, size; + + while (qemu_isspace(*p)) { + p++; + } + if (*p == '/') { + /* format found */ + p++; + count = 1; + if (qemu_isdigit(*p)) { + count = 0; + while (qemu_isdigit(*p)) { + count = count * 10 + (*p - '0'); + p++; + } + } + size = -1; + format = -1; + for (;;) { + switch (*p) { + case 'o': + case 'd': + case 'u': + case 'x': + case 'i': + case 'c': + format = *p++; + break; + case 'b': + size = 1; + p++; + break; + case 'h': + size = 2; + p++; + break; + case 'w': + size = 4; + p++; + break; + case 'g': + case 'L': + size = 8; + p++; + break; + default: + goto next; + } + } + next: + if (*p != '\0' && !qemu_isspace(*p)) { + monitor_printf(mon, "invalid char in format: '%c'\n", + *p); + goto fail; + } + if (format < 0) { + format = default_fmt_format; + } + if (format != 'i') { + /* for 'i', not specifying a size gives -1 as size */ + if (size < 0) { + size = default_fmt_size; + } + default_fmt_size = size; + } + default_fmt_format = format; + } else { + count = 1; + format = default_fmt_format; + if (format != 'i') { + size = default_fmt_size; + } else { + size = -1; + } + } + qdict_put_int(qdict, "count", count); + qdict_put_int(qdict, "format", format); + qdict_put_int(qdict, "size", size); + } + break; + case 'i': + case 'l': + case 'M': + { + int64_t val; + + while (qemu_isspace(*p)) { + p++; + } + if (*typestr == '?' || *typestr == '.') { + if (*typestr == '?') { + if (*p == '\0') { + typestr++; + break; + } + } else { + if (*p == '.') { + p++; + while (qemu_isspace(*p)) { + p++; + } + } else { + typestr++; + break; + } + } + typestr++; + } + if (get_expr(mon, &val, &p)) { + goto fail; + } + /* Check if 'i' is greater than 32-bit */ + if ((c == 'i') && ((val >> 32) & 0xffffffff)) { + monitor_printf(mon, "\'%s\' has failed: ", cmd->name); + monitor_printf(mon, "integer is for 32-bit values\n"); + goto fail; + } else if (c == 'M') { + if (val < 0) { + monitor_printf(mon, "enter a positive value\n"); + goto fail; + } + val *= MiB; + } + qdict_put_int(qdict, key, val); + } + break; + case 'o': + { + int ret; + uint64_t val; + const char *end; + + while (qemu_isspace(*p)) { + p++; + } + if (*typestr == '?') { + typestr++; + if (*p == '\0') { + break; + } + } + ret = qemu_strtosz_MiB(p, &end, &val); + if (ret < 0 || val > INT64_MAX) { + monitor_printf(mon, "invalid size\n"); + goto fail; + } + qdict_put_int(qdict, key, val); + p = end; + } + break; + case 'T': + { + double val; + + while (qemu_isspace(*p)) { + p++; + } + if (*typestr == '?') { + typestr++; + if (*p == '\0') { + break; + } + } + if (get_double(mon, &val, &p) < 0) { + goto fail; + } + if (p[0] && p[1] == 's') { + switch (*p) { + case 'm': + val /= 1e3; p += 2; break; + case 'u': + val /= 1e6; p += 2; break; + case 'n': + val /= 1e9; p += 2; break; + } + } + if (*p && !qemu_isspace(*p)) { + monitor_printf(mon, "Unknown unit suffix\n"); + goto fail; + } + qdict_put(qdict, key, qnum_from_double(val)); + } + break; + case 'b': + { + const char *beg; + bool val; + + while (qemu_isspace(*p)) { + p++; + } + beg = p; + while (qemu_isgraph(*p)) { + p++; + } + if (p - beg == 2 && !memcmp(beg, "on", p - beg)) { + val = true; + } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) { + val = false; + } else { + monitor_printf(mon, "Expected 'on' or 'off'\n"); + goto fail; + } + qdict_put_bool(qdict, key, val); + } + break; + case '-': + { + const char *tmp = p; + int skip_key = 0; + /* option */ + + c = *typestr++; + if (c == '\0') { + goto bad_type; + } + while (qemu_isspace(*p)) { + p++; + } + if (*p == '-') { + p++; + if (c != *p) { + if (!is_valid_option(p, typestr)) { + monitor_printf(mon, "%s: unsupported option -%c\n", + cmd->name, *p); + goto fail; + } else { + skip_key = 1; + } + } + if (skip_key) { + p = tmp; + } else { + /* has option */ + p++; + qdict_put_bool(qdict, key, true); + } + } + } + break; + case 'S': + { + /* package all remaining string */ + int len; + + while (qemu_isspace(*p)) { + p++; + } + if (*typestr == '?') { + typestr++; + if (*p == '\0') { + /* no remaining string: NULL argument */ + break; + } + } + len = strlen(p); + if (len <= 0) { + monitor_printf(mon, "%s: string expected\n", + cmd->name); + goto fail; + } + qdict_put_str(qdict, key, p); + p += len; + } + break; + default: + bad_type: + monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c); + goto fail; + } + g_free(key); + key = NULL; + } + /* check that all arguments were parsed */ + while (qemu_isspace(*p)) { + p++; + } + if (*p != '\0') { + monitor_printf(mon, "%s: extraneous characters at the end of line\n", + cmd->name); + goto fail; + } + + return qdict; + +fail: + qobject_unref(qdict); + g_free(key); + return NULL; +} + +void handle_hmp_command(MonitorHMP *mon, const char *cmdline) +{ + QDict *qdict; + const HMPCommand *cmd; + const char *cmd_start = cmdline; + + trace_handle_hmp_command(mon, cmdline); + + cmd = monitor_parse_command(mon, cmdline, &cmdline, hmp_cmds); + if (!cmd) { + return; + } + + qdict = monitor_parse_arguments(&mon->common, &cmdline, cmd); + if (!qdict) { + while (cmdline > cmd_start && qemu_isspace(cmdline[-1])) { + cmdline--; + } + monitor_printf(&mon->common, "Try \"help %.*s\" for more information\n", + (int)(cmdline - cmd_start), cmd_start); + return; + } + + cmd->cmd(&mon->common, qdict); + qobject_unref(qdict); +} + +static void cmd_completion(MonitorHMP *mon, const char *name, const char *list) +{ + const char *p, *pstart; + char cmd[128]; + int len; + + p = list; + for (;;) { + pstart = p; + p = qemu_strchrnul(p, '|'); + len = p - pstart; + if (len > sizeof(cmd) - 2) { + len = sizeof(cmd) - 2; + } + memcpy(cmd, pstart, len); + cmd[len] = '\0'; + if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) { + readline_add_completion(mon->rs, cmd); + } + if (*p == '\0') { + break; + } + p++; + } +} + +static void file_completion(MonitorHMP *mon, const char *input) +{ + DIR *ffs; + struct dirent *d; + char path[1024]; + char file[1024], file_prefix[1024]; + int input_path_len; + const char *p; + + p = strrchr(input, '/'); + if (!p) { + input_path_len = 0; + pstrcpy(file_prefix, sizeof(file_prefix), input); + pstrcpy(path, sizeof(path), "."); + } else { + input_path_len = p - input + 1; + memcpy(path, input, input_path_len); + if (input_path_len > sizeof(path) - 1) { + input_path_len = sizeof(path) - 1; + } + path[input_path_len] = '\0'; + pstrcpy(file_prefix, sizeof(file_prefix), p + 1); + } + + ffs = opendir(path); + if (!ffs) { + return; + } + for (;;) { + struct stat sb; + d = readdir(ffs); + if (!d) { + break; + } + + if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) { + continue; + } + + if (strstart(d->d_name, file_prefix, NULL)) { + memcpy(file, input, input_path_len); + if (input_path_len < sizeof(file)) { + pstrcpy(file + input_path_len, sizeof(file) - input_path_len, + d->d_name); + } + /* + * stat the file to find out if it's a directory. + * In that case add a slash to speed up typing long paths + */ + if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) { + pstrcat(file, sizeof(file), "/"); + } + readline_add_completion(mon->rs, file); + } + } + closedir(ffs); +} + +static const char *next_arg_type(const char *typestr) +{ + const char *p = strchr(typestr, ':'); + return (p != NULL ? ++p : typestr); +} + +static void monitor_find_completion_by_table(MonitorHMP *mon, + const HMPCommand *cmd_table, + char **args, + int nb_args) +{ + const char *cmdname; + int i; + const char *ptype, *old_ptype, *str, *name; + const HMPCommand *cmd; + BlockBackend *blk = NULL; + + if (nb_args <= 1) { + /* command completion */ + if (nb_args == 0) { + cmdname = ""; + } else { + cmdname = args[0]; + } + readline_set_completion_index(mon->rs, strlen(cmdname)); + for (cmd = cmd_table; cmd->name != NULL; cmd++) { + if (!runstate_check(RUN_STATE_PRECONFIG) || + cmd_can_preconfig(cmd)) { + cmd_completion(mon, cmdname, cmd->name); + } + } + } else { + /* find the command */ + for (cmd = cmd_table; cmd->name != NULL; cmd++) { + if (hmp_compare_cmd(args[0], cmd->name) && + (!runstate_check(RUN_STATE_PRECONFIG) || + cmd_can_preconfig(cmd))) { + break; + } + } + if (!cmd->name) { + return; + } + + if (cmd->sub_table) { + /* do the job again */ + monitor_find_completion_by_table(mon, cmd->sub_table, + &args[1], nb_args - 1); + return; + } + if (cmd->command_completion) { + cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]); + return; + } + + ptype = next_arg_type(cmd->args_type); + for (i = 0; i < nb_args - 2; i++) { + if (*ptype != '\0') { + ptype = next_arg_type(ptype); + while (*ptype == '?') { + ptype = next_arg_type(ptype); + } + } + } + str = args[nb_args - 1]; + old_ptype = NULL; + while (*ptype == '-' && old_ptype != ptype) { + old_ptype = ptype; + ptype = next_arg_type(ptype); + } + switch (*ptype) { + case 'F': + /* file completion */ + readline_set_completion_index(mon->rs, strlen(str)); + file_completion(mon, str); + break; + case 'B': + /* block device name completion */ + readline_set_completion_index(mon->rs, strlen(str)); + while ((blk = blk_next(blk)) != NULL) { + name = blk_name(blk); + if (str[0] == '\0' || + !strncmp(name, str, strlen(str))) { + readline_add_completion(mon->rs, name); + } + } + break; + case 's': + case 'S': + if (!strcmp(cmd->name, "help|?")) { + monitor_find_completion_by_table(mon, cmd_table, + &args[1], nb_args - 1); + } + break; + default: + break; + } + } +} + +static void monitor_find_completion(void *opaque, + const char *cmdline) +{ + MonitorHMP *mon = opaque; + char *args[MAX_ARGS]; + int nb_args, len; + + /* 1. parse the cmdline */ + if (parse_cmdline(cmdline, &nb_args, args) < 0) { + return; + } + + /* + * if the line ends with a space, it means we want to complete the + * next arg + */ + len = strlen(cmdline); + if (len > 0 && qemu_isspace(cmdline[len - 1])) { + if (nb_args >= MAX_ARGS) { + goto cleanup; + } + args[nb_args++] = g_strdup(""); + } + + /* 2. auto complete according to args */ + monitor_find_completion_by_table(mon, hmp_cmds, args, nb_args); + +cleanup: + free_cmdline_args(args, nb_args); +} + +static void monitor_read(void *opaque, const uint8_t *buf, int size) +{ + MonitorHMP *mon; + Monitor *old_mon = cur_mon; + int i; + + cur_mon = opaque; + mon = container_of(cur_mon, MonitorHMP, common); + + if (mon->rs) { + for (i = 0; i < size; i++) { + readline_handle_byte(mon->rs, buf[i]); + } + } else { + if (size == 0 || buf[size - 1] != 0) { + monitor_printf(cur_mon, "corrupted command\n"); + } else { + handle_hmp_command(mon, (char *)buf); + } + } + + cur_mon = old_mon; +} + +static void monitor_event(void *opaque, int event) +{ + Monitor *mon = opaque; + MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common); + + switch (event) { + case CHR_EVENT_MUX_IN: + qemu_mutex_lock(&mon->mon_lock); + mon->mux_out = 0; + qemu_mutex_unlock(&mon->mon_lock); + if (mon->reset_seen) { + readline_restart(hmp_mon->rs); + monitor_resume(mon); + monitor_flush(mon); + } else { + atomic_mb_set(&mon->suspend_cnt, 0); + } + break; + + case CHR_EVENT_MUX_OUT: + if (mon->reset_seen) { + if (atomic_mb_read(&mon->suspend_cnt) == 0) { + monitor_printf(mon, "\n"); + } + monitor_flush(mon); + monitor_suspend(mon); + } else { + atomic_inc(&mon->suspend_cnt); + } + qemu_mutex_lock(&mon->mon_lock); + mon->mux_out = 1; + qemu_mutex_unlock(&mon->mon_lock); + break; + + case CHR_EVENT_OPENED: + monitor_printf(mon, "QEMU %s monitor - type 'help' for more " + "information\n", QEMU_VERSION); + if (!mon->mux_out) { + readline_restart(hmp_mon->rs); + readline_show_prompt(hmp_mon->rs); + } + mon->reset_seen = 1; + mon_refcount++; + break; + + case CHR_EVENT_CLOSED: + mon_refcount--; + monitor_fdsets_cleanup(); + break; + } +} + + +/* + * These functions just adapt the readline interface in a typesafe way. We + * could cast function pointers but that discards compiler checks. + */ +static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque, + const char *fmt, ...) +{ + MonitorHMP *mon = opaque; + va_list ap; + va_start(ap, fmt); + monitor_vprintf(&mon->common, fmt, ap); + va_end(ap); +} + +static void monitor_readline_flush(void *opaque) +{ + MonitorHMP *mon = opaque; + monitor_flush(&mon->common); +} + +void monitor_init_hmp(Chardev *chr, int flags) +{ + MonitorHMP *mon = g_new0(MonitorHMP, 1); + bool use_readline = flags & MONITOR_USE_READLINE; + + monitor_data_init(&mon->common, flags, false, false); + qemu_chr_fe_init(&mon->common.chr, chr, &error_abort); + + if (use_readline) { + mon->rs = readline_init(monitor_readline_printf, + monitor_readline_flush, + mon, + monitor_find_completion); + monitor_read_command(mon, 0); + } + + qemu_chr_fe_set_handlers(&mon->common.chr, monitor_can_read, monitor_read, + monitor_event, NULL, &mon->common, NULL, true); + monitor_list_append(&mon->common); +} diff --git a/monitor/misc.c b/monitor/misc.c index 824d28d717..e4d656f002 100644 --- a/monitor/misc.c +++ b/monitor/misc.c @@ -24,8 +24,6 @@ #include "qemu/osdep.h" #include "monitor-internal.h" -#include "qemu/units.h" -#include <dirent.h> #include "cpu.h" #include "hw/hw.h" #include "monitor/qdev.h" @@ -43,7 +41,6 @@ #include "qemu/ctype.h" #include "ui/console.h" #include "ui/input.h" -#include "sysemu/block-backend.h" #include "audio/audio.h" #include "disas/disas.h" #include "sysemu/balloon.h" @@ -55,7 +52,6 @@ #include "sysemu/tpm.h" #include "qapi/qmp/qdict.h" #include "qapi/qmp/qerror.h" -#include "qapi/qmp/qnum.h" #include "qapi/qmp/qstring.h" #include "qom/object_interfaces.h" #include "trace.h" @@ -66,7 +62,6 @@ #endif #include "exec/memory.h" #include "exec/exec-all.h" -#include "qemu/log.h" #include "qemu/option.h" #include "hmp.h" #include "qemu/thread.h" @@ -149,14 +144,10 @@ static QLIST_HEAD(, MonFdset) mon_fdsets; int mon_refcount; -static HMPCommand hmp_cmds[]; static HMPCommand hmp_info_cmds[]; __thread Monitor *cur_mon; -static void monitor_command_cb(void *opaque, const char *cmdline, - void *readline_opaque); - /** * Is @mon is using readline? * Note: not all HMP monitors use readline, e.g., gdbserver has a @@ -191,31 +182,6 @@ bool monitor_cur_is_qmp(void) return cur_mon && monitor_is_qmp(cur_mon); } -void monitor_read_command(MonitorHMP *mon, int show_prompt) -{ - if (!mon->rs) - return; - - readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL); - if (show_prompt) - readline_show_prompt(mon->rs); -} - -int monitor_read_password(MonitorHMP *mon, ReadLineFunc *readline_func, - void *opaque) -{ - if (mon->rs) { - readline_start(mon->rs, "Password: ", 1, readline_func, opaque); - /* prompt is printed on return from the command handler */ - return 0; - } else { - monitor_printf(&mon->common, - "terminal does not support password prompting\n"); - return -ENOTTY; - } -} - - static void monitor_flush_locked(Monitor *mon); static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond, @@ -534,8 +500,6 @@ static void monitor_qapi_event_init(void) qapi_event_throttle_equal); } -static void handle_hmp_command(MonitorHMP *mon, const char *cmdline); - static void monitor_iothread_init(void); void monitor_data_init(Monitor *mon, int flags, bool skip_flush, @@ -602,245 +566,27 @@ out: return output; } -static int compare_cmd(const char *name, const char *list) +/** + * Is @name in the '|' separated list of names @list? + */ +int hmp_compare_cmd(const char *name, const char *list) { const char *p, *pstart; int len; len = strlen(name); p = list; - for(;;) { + for (;;) { pstart = p; p = qemu_strchrnul(p, '|'); - if ((p - pstart) == len && !memcmp(pstart, name, len)) + if ((p - pstart) == len && !memcmp(pstart, name, len)) { return 1; - if (*p == '\0') - break; - p++; - } - return 0; -} - -static int get_str(char *buf, int buf_size, const char **pp) -{ - const char *p; - char *q; - int c; - - q = buf; - p = *pp; - while (qemu_isspace(*p)) { - p++; - } - if (*p == '\0') { - fail: - *q = '\0'; - *pp = p; - return -1; - } - if (*p == '\"') { - p++; - while (*p != '\0' && *p != '\"') { - if (*p == '\\') { - p++; - c = *p++; - switch (c) { - case 'n': - c = '\n'; - break; - case 'r': - c = '\r'; - break; - case '\\': - case '\'': - case '\"': - break; - default: - printf("unsupported escape code: '\\%c'\n", c); - goto fail; - } - if ((q - buf) < buf_size - 1) { - *q++ = c; - } - } else { - if ((q - buf) < buf_size - 1) { - *q++ = *p; - } - p++; - } - } - if (*p != '\"') { - printf("unterminated string\n"); - goto fail; - } - p++; - } else { - while (*p != '\0' && !qemu_isspace(*p)) { - if ((q - buf) < buf_size - 1) { - *q++ = *p; - } - p++; - } - } - *q = '\0'; - *pp = p; - return 0; -} - -#define MAX_ARGS 16 - -static void free_cmdline_args(char **args, int nb_args) -{ - int i; - - assert(nb_args <= MAX_ARGS); - - for (i = 0; i < nb_args; i++) { - g_free(args[i]); - } - -} - -/* - * Parse the command line to get valid args. - * @cmdline: command line to be parsed. - * @pnb_args: location to store the number of args, must NOT be NULL. - * @args: location to store the args, which should be freed by caller, must - * NOT be NULL. - * - * Returns 0 on success, negative on failure. - * - * NOTE: this parser is an approximate form of the real command parser. Number - * of args have a limit of MAX_ARGS. If cmdline contains more, it will - * return with failure. - */ -static int parse_cmdline(const char *cmdline, - int *pnb_args, char **args) -{ - const char *p; - int nb_args, ret; - char buf[1024]; - - p = cmdline; - nb_args = 0; - for (;;) { - while (qemu_isspace(*p)) { - p++; } if (*p == '\0') { break; } - if (nb_args >= MAX_ARGS) { - goto fail; - } - ret = get_str(buf, sizeof(buf), &p); - if (ret < 0) { - goto fail; - } - args[nb_args] = g_strdup(buf); - nb_args++; + p++; } - *pnb_args = nb_args; return 0; - - fail: - free_cmdline_args(args, nb_args); - return -1; -} - -/* - * Can command @cmd be executed in preconfig state? - */ -static bool cmd_can_preconfig(const HMPCommand *cmd) -{ - if (!cmd->flags) { - return false; - } - - return strchr(cmd->flags, 'p'); -} - -static void help_cmd_dump_one(Monitor *mon, - const HMPCommand *cmd, - char **prefix_args, - int prefix_args_nb) -{ - int i; - - if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) { - return; - } - - for (i = 0; i < prefix_args_nb; i++) { - monitor_printf(mon, "%s ", prefix_args[i]); - } - monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help); -} - -/* @args[@arg_index] is the valid command need to find in @cmds */ -static void help_cmd_dump(Monitor *mon, const HMPCommand *cmds, - char **args, int nb_args, int arg_index) -{ - const HMPCommand *cmd; - size_t i; - - /* No valid arg need to compare with, dump all in *cmds */ - if (arg_index >= nb_args) { - for (cmd = cmds; cmd->name != NULL; cmd++) { - help_cmd_dump_one(mon, cmd, args, arg_index); - } - return; - } - - /* Find one entry to dump */ - for (cmd = cmds; cmd->name != NULL; cmd++) { - if (compare_cmd(args[arg_index], cmd->name) && - ((!runstate_check(RUN_STATE_PRECONFIG) || - cmd_can_preconfig(cmd)))) { - if (cmd->sub_table) { - /* continue with next arg */ - help_cmd_dump(mon, cmd->sub_table, - args, nb_args, arg_index + 1); - } else { - help_cmd_dump_one(mon, cmd, args, arg_index); - } - return; - } - } - - /* Command not found */ - monitor_printf(mon, "unknown command: '"); - for (i = 0; i <= arg_index; i++) { - monitor_printf(mon, "%s%s", args[i], i == arg_index ? "'\n" : " "); - } -} - -static void help_cmd(Monitor *mon, const char *name) -{ - char *args[MAX_ARGS]; - int nb_args = 0; - - /* 1. parse user input */ - if (name) { - /* special case for log, directly dump and return */ - if (!strcmp(name, "log")) { - const QEMULogItem *item; - monitor_printf(mon, "Log items (comma separated):\n"); - monitor_printf(mon, "%-10s %s\n", "none", "remove all logs"); - for (item = qemu_log_items; item->mask != 0; item++) { - monitor_printf(mon, "%-10s %s\n", item->name, item->help); - } - return; - } - - if (parse_cmdline(name, &nb_args, args) < 0) { - return; - } - } - - /* 2. dump the contents according to parsed args */ - help_cmd_dump(mon, hmp_cmds, args, nb_args, 0); - - free_cmdline_args(args, nb_args); } static void do_help_cmd(Monitor *mon, const QDict *qdict) @@ -2500,30 +2246,16 @@ static HMPCommand hmp_info_cmds[] = { }; /* hmp_cmds and hmp_info_cmds would be sorted at runtime */ -static HMPCommand hmp_cmds[] = { +HMPCommand hmp_cmds[] = { #include "hmp-commands.h" { NULL, NULL, }, }; -/*******************************************************************/ - -static const char *pch; -static sigjmp_buf expr_env; - - -static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN -expr_error(Monitor *mon, const char *fmt, ...) -{ - va_list ap; - va_start(ap, fmt); - monitor_vprintf(mon, fmt, ap); - monitor_printf(mon, "\n"); - va_end(ap); - siglongjmp(expr_env, 1); -} - -/* return 0 if OK, -1 if not found */ -static int get_monitor_def(target_long *pval, const char *name) +/* + * Set @pval to the value in the register identified by @name. + * return 0 if OK, -1 if not found + */ +int get_monitor_def(int64_t *pval, const char *name) { const MonitorDef *md = target_monitor_defs(); CPUState *cs = mon_get_cpu(); @@ -2536,7 +2268,7 @@ static int get_monitor_def(target_long *pval, const char *name) } for(; md->name != NULL; md++) { - if (compare_cmd(name, md->name)) { + if (hmp_compare_cmd(name, md->name)) { if (md->get_value) { *pval = md->get_value(md, md->offset); } else { @@ -2566,829 +2298,6 @@ static int get_monitor_def(target_long *pval, const char *name) return ret; } -static void next(void) -{ - if (*pch != '\0') { - pch++; - while (qemu_isspace(*pch)) - pch++; - } -} - -static int64_t expr_sum(Monitor *mon); - -static int64_t expr_unary(Monitor *mon) -{ - int64_t n; - char *p; - int ret; - - switch(*pch) { - case '+': - next(); - n = expr_unary(mon); - break; - case '-': - next(); - n = -expr_unary(mon); - break; - case '~': - next(); - n = ~expr_unary(mon); - break; - case '(': - next(); - n = expr_sum(mon); - if (*pch != ')') { - expr_error(mon, "')' expected"); - } - next(); - break; - case '\'': - pch++; - if (*pch == '\0') - expr_error(mon, "character constant expected"); - n = *pch; - pch++; - if (*pch != '\'') - expr_error(mon, "missing terminating \' character"); - next(); - break; - case '$': - { - char buf[128], *q; - target_long reg=0; - - pch++; - q = buf; - while ((*pch >= 'a' && *pch <= 'z') || - (*pch >= 'A' && *pch <= 'Z') || - (*pch >= '0' && *pch <= '9') || - *pch == '_' || *pch == '.') { - if ((q - buf) < sizeof(buf) - 1) - *q++ = *pch; - pch++; - } - while (qemu_isspace(*pch)) - pch++; - *q = 0; - ret = get_monitor_def(®, buf); - if (ret < 0) - expr_error(mon, "unknown register"); - n = reg; - } - break; - case '\0': - expr_error(mon, "unexpected end of expression"); - n = 0; - break; - default: - errno = 0; - n = strtoull(pch, &p, 0); - if (errno == ERANGE) { - expr_error(mon, "number too large"); - } - if (pch == p) { - expr_error(mon, "invalid char '%c' in expression", *p); - } - pch = p; - while (qemu_isspace(*pch)) - pch++; - break; - } - return n; -} - - -static int64_t expr_prod(Monitor *mon) -{ - int64_t val, val2; - int op; - - val = expr_unary(mon); - for(;;) { - op = *pch; - if (op != '*' && op != '/' && op != '%') - break; - next(); - val2 = expr_unary(mon); - switch(op) { - default: - case '*': - val *= val2; - break; - case '/': - case '%': - if (val2 == 0) - expr_error(mon, "division by zero"); - if (op == '/') - val /= val2; - else - val %= val2; - break; - } - } - return val; -} - -static int64_t expr_logic(Monitor *mon) -{ - int64_t val, val2; - int op; - - val = expr_prod(mon); - for(;;) { - op = *pch; - if (op != '&' && op != '|' && op != '^') - break; - next(); - val2 = expr_prod(mon); - switch(op) { - default: - case '&': - val &= val2; - break; - case '|': - val |= val2; - break; - case '^': - val ^= val2; - break; - } - } - return val; -} - -static int64_t expr_sum(Monitor *mon) -{ - int64_t val, val2; - int op; - - val = expr_logic(mon); - for(;;) { - op = *pch; - if (op != '+' && op != '-') - break; - next(); - val2 = expr_logic(mon); - if (op == '+') - val += val2; - else - val -= val2; - } - return val; -} - -static int get_expr(Monitor *mon, int64_t *pval, const char **pp) -{ - pch = *pp; - if (sigsetjmp(expr_env, 0)) { - *pp = pch; - return -1; - } - while (qemu_isspace(*pch)) - pch++; - *pval = expr_sum(mon); - *pp = pch; - return 0; -} - -static int get_double(Monitor *mon, double *pval, const char **pp) -{ - const char *p = *pp; - char *tailp; - double d; - - d = strtod(p, &tailp); - if (tailp == p) { - monitor_printf(mon, "Number expected\n"); - return -1; - } - if (d != d || d - d != 0) { - /* NaN or infinity */ - monitor_printf(mon, "Bad number\n"); - return -1; - } - *pval = d; - *pp = tailp; - return 0; -} - -/* - * Store the command-name in cmdname, and return a pointer to - * the remaining of the command string. - */ -static const char *get_command_name(const char *cmdline, - char *cmdname, size_t nlen) -{ - size_t len; - const char *p, *pstart; - - p = cmdline; - while (qemu_isspace(*p)) - p++; - if (*p == '\0') - return NULL; - pstart = p; - while (*p != '\0' && *p != '/' && !qemu_isspace(*p)) - p++; - len = p - pstart; - if (len > nlen - 1) - len = nlen - 1; - memcpy(cmdname, pstart, len); - cmdname[len] = '\0'; - return p; -} - -/** - * Read key of 'type' into 'key' and return the current - * 'type' pointer. - */ -static char *key_get_info(const char *type, char **key) -{ - size_t len; - char *p, *str; - - if (*type == ',') - type++; - - p = strchr(type, ':'); - if (!p) { - *key = NULL; - return NULL; - } - len = p - type; - - str = g_malloc(len + 1); - memcpy(str, type, len); - str[len] = '\0'; - - *key = str; - return ++p; -} - -static int default_fmt_format = 'x'; -static int default_fmt_size = 4; - -static int is_valid_option(const char *c, const char *typestr) -{ - char option[3]; - - option[0] = '-'; - option[1] = *c; - option[2] = '\0'; - - typestr = strstr(typestr, option); - return (typestr != NULL); -} - -static const HMPCommand *search_dispatch_table(const HMPCommand *disp_table, - const char *cmdname) -{ - const HMPCommand *cmd; - - for (cmd = disp_table; cmd->name != NULL; cmd++) { - if (compare_cmd(cmdname, cmd->name)) { - return cmd; - } - } - - return NULL; -} - -/* - * Parse command name from @cmdp according to command table @table. - * If blank, return NULL. - * Else, if no valid command can be found, report to @mon, and return - * NULL. - * Else, change @cmdp to point right behind the name, and return its - * command table entry. - * Do not assume the return value points into @table! It doesn't when - * the command is found in a sub-command table. - */ -static const HMPCommand *monitor_parse_command(MonitorHMP *hmp_mon, - const char *cmdp_start, - const char **cmdp, - HMPCommand *table) -{ - Monitor *mon = &hmp_mon->common; - const char *p; - const HMPCommand *cmd; - char cmdname[256]; - - /* extract the command name */ - p = get_command_name(*cmdp, cmdname, sizeof(cmdname)); - if (!p) - return NULL; - - cmd = search_dispatch_table(table, cmdname); - if (!cmd) { - monitor_printf(mon, "unknown command: '%.*s'\n", - (int)(p - cmdp_start), cmdp_start); - return NULL; - } - if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) { - monitor_printf(mon, "Command '%.*s' not available with -preconfig " - "until after exit_preconfig.\n", - (int)(p - cmdp_start), cmdp_start); - return NULL; - } - - /* filter out following useless space */ - while (qemu_isspace(*p)) { - p++; - } - - *cmdp = p; - /* search sub command */ - if (cmd->sub_table != NULL && *p != '\0') { - return monitor_parse_command(hmp_mon, cmdp_start, cmdp, cmd->sub_table); - } - - return cmd; -} - -/* - * Parse arguments for @cmd. - * If it can't be parsed, report to @mon, and return NULL. - * Else, insert command arguments into a QDict, and return it. - * Note: On success, caller has to free the QDict structure. - */ - -static QDict *monitor_parse_arguments(Monitor *mon, - const char **endp, - const HMPCommand *cmd) -{ - const char *typestr; - char *key; - int c; - const char *p = *endp; - char buf[1024]; - QDict *qdict = qdict_new(); - - /* parse the parameters */ - typestr = cmd->args_type; - for(;;) { - typestr = key_get_info(typestr, &key); - if (!typestr) - break; - c = *typestr; - typestr++; - switch(c) { - case 'F': - case 'B': - case 's': - { - int ret; - - while (qemu_isspace(*p)) - p++; - if (*typestr == '?') { - typestr++; - if (*p == '\0') { - /* no optional string: NULL argument */ - break; - } - } - ret = get_str(buf, sizeof(buf), &p); - if (ret < 0) { - switch(c) { - case 'F': - monitor_printf(mon, "%s: filename expected\n", - cmd->name); - break; - case 'B': - monitor_printf(mon, "%s: block device name expected\n", - cmd->name); - break; - default: - monitor_printf(mon, "%s: string expected\n", cmd->name); - break; - } - goto fail; - } - qdict_put_str(qdict, key, buf); - } - break; - case 'O': - { - QemuOptsList *opts_list; - QemuOpts *opts; - - opts_list = qemu_find_opts(key); - if (!opts_list || opts_list->desc->name) { - goto bad_type; - } - while (qemu_isspace(*p)) { - p++; - } - if (!*p) - break; - if (get_str(buf, sizeof(buf), &p) < 0) { - goto fail; - } - opts = qemu_opts_parse_noisily(opts_list, buf, true); - if (!opts) { - goto fail; - } - qemu_opts_to_qdict(opts, qdict); - qemu_opts_del(opts); - } - break; - case '/': - { - int count, format, size; - - while (qemu_isspace(*p)) - p++; - if (*p == '/') { - /* format found */ - p++; - count = 1; - if (qemu_isdigit(*p)) { - count = 0; - while (qemu_isdigit(*p)) { - count = count * 10 + (*p - '0'); - p++; - } - } - size = -1; - format = -1; - for(;;) { - switch(*p) { - case 'o': - case 'd': - case 'u': - case 'x': - case 'i': - case 'c': - format = *p++; - break; - case 'b': - size = 1; - p++; - break; - case 'h': - size = 2; - p++; - break; - case 'w': - size = 4; - p++; - break; - case 'g': - case 'L': - size = 8; - p++; - break; - default: - goto next; - } - } - next: - if (*p != '\0' && !qemu_isspace(*p)) { - monitor_printf(mon, "invalid char in format: '%c'\n", - *p); - goto fail; - } - if (format < 0) - format = default_fmt_format; - if (format != 'i') { - /* for 'i', not specifying a size gives -1 as size */ - if (size < 0) - size = default_fmt_size; - default_fmt_size = size; - } - default_fmt_format = format; - } else { - count = 1; - format = default_fmt_format; - if (format != 'i') { - size = default_fmt_size; - } else { - size = -1; - } - } - qdict_put_int(qdict, "count", count); - qdict_put_int(qdict, "format", format); - qdict_put_int(qdict, "size", size); - } - break; - case 'i': - case 'l': - case 'M': - { - int64_t val; - - while (qemu_isspace(*p)) - p++; - if (*typestr == '?' || *typestr == '.') { - if (*typestr == '?') { - if (*p == '\0') { - typestr++; - break; - } - } else { - if (*p == '.') { - p++; - while (qemu_isspace(*p)) - p++; - } else { - typestr++; - break; - } - } - typestr++; - } - if (get_expr(mon, &val, &p)) - goto fail; - /* Check if 'i' is greater than 32-bit */ - if ((c == 'i') && ((val >> 32) & 0xffffffff)) { - monitor_printf(mon, "\'%s\' has failed: ", cmd->name); - monitor_printf(mon, "integer is for 32-bit values\n"); - goto fail; - } else if (c == 'M') { - if (val < 0) { - monitor_printf(mon, "enter a positive value\n"); - goto fail; - } - val *= MiB; - } - qdict_put_int(qdict, key, val); - } - break; - case 'o': - { - int ret; - uint64_t val; - const char *end; - - while (qemu_isspace(*p)) { - p++; - } - if (*typestr == '?') { - typestr++; - if (*p == '\0') { - break; - } - } - ret = qemu_strtosz_MiB(p, &end, &val); - if (ret < 0 || val > INT64_MAX) { - monitor_printf(mon, "invalid size\n"); - goto fail; - } - qdict_put_int(qdict, key, val); - p = end; - } - break; - case 'T': - { - double val; - - while (qemu_isspace(*p)) - p++; - if (*typestr == '?') { - typestr++; - if (*p == '\0') { - break; - } - } - if (get_double(mon, &val, &p) < 0) { - goto fail; - } - if (p[0] && p[1] == 's') { - switch (*p) { - case 'm': - val /= 1e3; p += 2; break; - case 'u': - val /= 1e6; p += 2; break; - case 'n': - val /= 1e9; p += 2; break; - } - } - if (*p && !qemu_isspace(*p)) { - monitor_printf(mon, "Unknown unit suffix\n"); - goto fail; - } - qdict_put(qdict, key, qnum_from_double(val)); - } - break; - case 'b': - { - const char *beg; - bool val; - - while (qemu_isspace(*p)) { - p++; - } - beg = p; - while (qemu_isgraph(*p)) { - p++; - } - if (p - beg == 2 && !memcmp(beg, "on", p - beg)) { - val = true; - } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) { - val = false; - } else { - monitor_printf(mon, "Expected 'on' or 'off'\n"); - goto fail; - } - qdict_put_bool(qdict, key, val); - } - break; - case '-': - { - const char *tmp = p; - int skip_key = 0; - /* option */ - - c = *typestr++; - if (c == '\0') - goto bad_type; - while (qemu_isspace(*p)) - p++; - if (*p == '-') { - p++; - if(c != *p) { - if(!is_valid_option(p, typestr)) { - - monitor_printf(mon, "%s: unsupported option -%c\n", - cmd->name, *p); - goto fail; - } else { - skip_key = 1; - } - } - if(skip_key) { - p = tmp; - } else { - /* has option */ - p++; - qdict_put_bool(qdict, key, true); - } - } - } - break; - case 'S': - { - /* package all remaining string */ - int len; - - while (qemu_isspace(*p)) { - p++; - } - if (*typestr == '?') { - typestr++; - if (*p == '\0') { - /* no remaining string: NULL argument */ - break; - } - } - len = strlen(p); - if (len <= 0) { - monitor_printf(mon, "%s: string expected\n", - cmd->name); - goto fail; - } - qdict_put_str(qdict, key, p); - p += len; - } - break; - default: - bad_type: - monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c); - goto fail; - } - g_free(key); - key = NULL; - } - /* check that all arguments were parsed */ - while (qemu_isspace(*p)) - p++; - if (*p != '\0') { - monitor_printf(mon, "%s: extraneous characters at the end of line\n", - cmd->name); - goto fail; - } - - return qdict; - -fail: - qobject_unref(qdict); - g_free(key); - return NULL; -} - -static void handle_hmp_command(MonitorHMP *mon, const char *cmdline) -{ - QDict *qdict; - const HMPCommand *cmd; - const char *cmd_start = cmdline; - - trace_handle_hmp_command(mon, cmdline); - - cmd = monitor_parse_command(mon, cmdline, &cmdline, hmp_cmds); - if (!cmd) { - return; - } - - qdict = monitor_parse_arguments(&mon->common, &cmdline, cmd); - if (!qdict) { - while (cmdline > cmd_start && qemu_isspace(cmdline[-1])) { - cmdline--; - } - monitor_printf(&mon->common, "Try \"help %.*s\" for more information\n", - (int)(cmdline - cmd_start), cmd_start); - return; - } - - cmd->cmd(&mon->common, qdict); - qobject_unref(qdict); -} - -static void cmd_completion(MonitorHMP *mon, const char *name, const char *list) -{ - const char *p, *pstart; - char cmd[128]; - int len; - - p = list; - for(;;) { - pstart = p; - p = qemu_strchrnul(p, '|'); - len = p - pstart; - if (len > sizeof(cmd) - 2) - len = sizeof(cmd) - 2; - memcpy(cmd, pstart, len); - cmd[len] = '\0'; - if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) { - readline_add_completion(mon->rs, cmd); - } - if (*p == '\0') - break; - p++; - } -} - -static void file_completion(MonitorHMP *mon, const char *input) -{ - DIR *ffs; - struct dirent *d; - char path[1024]; - char file[1024], file_prefix[1024]; - int input_path_len; - const char *p; - - p = strrchr(input, '/'); - if (!p) { - input_path_len = 0; - pstrcpy(file_prefix, sizeof(file_prefix), input); - pstrcpy(path, sizeof(path), "."); - } else { - input_path_len = p - input + 1; - memcpy(path, input, input_path_len); - if (input_path_len > sizeof(path) - 1) - input_path_len = sizeof(path) - 1; - path[input_path_len] = '\0'; - pstrcpy(file_prefix, sizeof(file_prefix), p + 1); - } - - ffs = opendir(path); - if (!ffs) - return; - for(;;) { - struct stat sb; - d = readdir(ffs); - if (!d) - break; - - if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) { - continue; - } - - if (strstart(d->d_name, file_prefix, NULL)) { - memcpy(file, input, input_path_len); - if (input_path_len < sizeof(file)) - pstrcpy(file + input_path_len, sizeof(file) - input_path_len, - d->d_name); - /* stat the file to find out if it's a directory. - * In that case add a slash to speed up typing long paths - */ - if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) { - pstrcat(file, sizeof(file), "/"); - } - readline_add_completion(mon->rs, file); - } - } - closedir(ffs); -} - -static const char *next_arg_type(const char *typestr) -{ - const char *p = strchr(typestr, ':'); - return (p != NULL ? ++p : typestr); -} - static void add_completion_option(ReadLineState *rs, const char *str, const char *option) { @@ -3819,127 +2728,6 @@ void loadvm_completion(ReadLineState *rs, int nb_args, const char *str) } } -static void monitor_find_completion_by_table(MonitorHMP *mon, - const HMPCommand *cmd_table, - char **args, - int nb_args) -{ - const char *cmdname; - int i; - const char *ptype, *old_ptype, *str, *name; - const HMPCommand *cmd; - BlockBackend *blk = NULL; - - if (nb_args <= 1) { - /* command completion */ - if (nb_args == 0) - cmdname = ""; - else - cmdname = args[0]; - readline_set_completion_index(mon->rs, strlen(cmdname)); - for (cmd = cmd_table; cmd->name != NULL; cmd++) { - if (!runstate_check(RUN_STATE_PRECONFIG) || - cmd_can_preconfig(cmd)) { - cmd_completion(mon, cmdname, cmd->name); - } - } - } else { - /* find the command */ - for (cmd = cmd_table; cmd->name != NULL; cmd++) { - if (compare_cmd(args[0], cmd->name) && - (!runstate_check(RUN_STATE_PRECONFIG) || - cmd_can_preconfig(cmd))) { - break; - } - } - if (!cmd->name) { - return; - } - - if (cmd->sub_table) { - /* do the job again */ - monitor_find_completion_by_table(mon, cmd->sub_table, - &args[1], nb_args - 1); - return; - } - if (cmd->command_completion) { - cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]); - return; - } - - ptype = next_arg_type(cmd->args_type); - for(i = 0; i < nb_args - 2; i++) { - if (*ptype != '\0') { - ptype = next_arg_type(ptype); - while (*ptype == '?') - ptype = next_arg_type(ptype); - } - } - str = args[nb_args - 1]; - old_ptype = NULL; - while (*ptype == '-' && old_ptype != ptype) { - old_ptype = ptype; - ptype = next_arg_type(ptype); - } - switch(*ptype) { - case 'F': - /* file completion */ - readline_set_completion_index(mon->rs, strlen(str)); - file_completion(mon, str); - break; - case 'B': - /* block device name completion */ - readline_set_completion_index(mon->rs, strlen(str)); - while ((blk = blk_next(blk)) != NULL) { - name = blk_name(blk); - if (str[0] == '\0' || - !strncmp(name, str, strlen(str))) { - readline_add_completion(mon->rs, name); - } - } - break; - case 's': - case 'S': - if (!strcmp(cmd->name, "help|?")) { - monitor_find_completion_by_table(mon, cmd_table, - &args[1], nb_args - 1); - } - break; - default: - break; - } - } -} - -static void monitor_find_completion(void *opaque, - const char *cmdline) -{ - MonitorHMP *mon = opaque; - char *args[MAX_ARGS]; - int nb_args, len; - - /* 1. parse the cmdline */ - if (parse_cmdline(cmdline, &nb_args, args) < 0) { - return; - } - - /* if the line ends with a space, it means we want to complete the - next arg */ - len = strlen(cmdline); - if (len > 0 && qemu_isspace(cmdline[len - 1])) { - if (nb_args >= MAX_ARGS) { - goto cleanup; - } - args[nb_args++] = g_strdup(""); - } - - /* 2. auto complete according to args */ - monitor_find_completion_by_table(mon, hmp_cmds, args, nb_args); - -cleanup: - free_cmdline_args(args, nb_args); -} - int monitor_can_read(void *opaque) { Monitor *mon = opaque; @@ -3947,38 +2735,6 @@ int monitor_can_read(void *opaque) return !atomic_mb_read(&mon->suspend_cnt); } -static void monitor_read(void *opaque, const uint8_t *buf, int size) -{ - MonitorHMP *mon; - Monitor *old_mon = cur_mon; - int i; - - cur_mon = opaque; - mon = container_of(cur_mon, MonitorHMP, common); - - if (mon->rs) { - for (i = 0; i < size; i++) - readline_handle_byte(mon->rs, buf[i]); - } else { - if (size == 0 || buf[size - 1] != 0) - monitor_printf(cur_mon, "corrupted command\n"); - else - handle_hmp_command(mon, (char *)buf); - } - - cur_mon = old_mon; -} - -static void monitor_command_cb(void *opaque, const char *cmdline, - void *readline_opaque) -{ - MonitorHMP *mon = opaque; - - monitor_suspend(&mon->common); - handle_hmp_command(mon, cmdline); - monitor_resume(&mon->common); -} - int monitor_suspend(Monitor *mon) { if (monitor_is_hmp_non_interactive(mon)) { @@ -4033,58 +2789,6 @@ void monitor_resume(Monitor *mon) trace_monitor_suspend(mon, -1); } -static void monitor_event(void *opaque, int event) -{ - Monitor *mon = opaque; - MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common); - - switch (event) { - case CHR_EVENT_MUX_IN: - qemu_mutex_lock(&mon->mon_lock); - mon->mux_out = 0; - qemu_mutex_unlock(&mon->mon_lock); - if (mon->reset_seen) { - readline_restart(hmp_mon->rs); - monitor_resume(mon); - monitor_flush(mon); - } else { - atomic_mb_set(&mon->suspend_cnt, 0); - } - break; - - case CHR_EVENT_MUX_OUT: - if (mon->reset_seen) { - if (atomic_mb_read(&mon->suspend_cnt) == 0) { - monitor_printf(mon, "\n"); - } - monitor_flush(mon); - monitor_suspend(mon); - } else { - atomic_inc(&mon->suspend_cnt); - } - qemu_mutex_lock(&mon->mon_lock); - mon->mux_out = 1; - qemu_mutex_unlock(&mon->mon_lock); - break; - - case CHR_EVENT_OPENED: - monitor_printf(mon, "QEMU %s monitor - type 'help' for more " - "information\n", QEMU_VERSION); - if (!mon->mux_out) { - readline_restart(hmp_mon->rs); - readline_show_prompt(hmp_mon->rs); - } - mon->reset_seen = 1; - mon_refcount++; - break; - - case CHR_EVENT_CLOSED: - mon_refcount--; - monitor_fdsets_cleanup(); - break; - } -} - static int compare_mon_cmd(const void *a, const void *b) { @@ -4125,25 +2829,6 @@ void monitor_init_globals(void) NULL); } -/* These functions just adapt the readline interface in a typesafe way. We - * could cast function pointers but that discards compiler checks. - */ -static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque, - const char *fmt, ...) -{ - MonitorHMP *mon = opaque; - va_list ap; - va_start(ap, fmt); - monitor_vprintf(&mon->common, fmt, ap); - va_end(ap); -} - -static void monitor_readline_flush(void *opaque) -{ - MonitorHMP *mon = opaque; - monitor_flush(&mon->common); -} - /* * Print to current monitor if we have one, else to stderr. */ @@ -4186,27 +2871,6 @@ void monitor_list_append(Monitor *mon) } } -static void monitor_init_hmp(Chardev *chr, int flags) -{ - MonitorHMP *mon = g_new0(MonitorHMP, 1); - bool use_readline = flags & MONITOR_USE_READLINE; - - monitor_data_init(&mon->common, flags, false, false); - qemu_chr_fe_init(&mon->common.chr, chr, &error_abort); - - if (use_readline) { - mon->rs = readline_init(monitor_readline_printf, - monitor_readline_flush, - mon, - monitor_find_completion); - monitor_read_command(mon, 0); - } - - qemu_chr_fe_set_handlers(&mon->common.chr, monitor_can_read, monitor_read, - monitor_event, NULL, &mon->common, NULL, true); - monitor_list_append(&mon->common); -} - void monitor_init(Chardev *chr, int flags) { if (flags & MONITOR_USE_CONTROL) { diff --git a/monitor/monitor-internal.h b/monitor/monitor-internal.h index d859bd3894..10fda7d97c 100644 --- a/monitor/monitor-internal.h +++ b/monitor/monitor-internal.h @@ -159,7 +159,10 @@ extern QemuMutex monitor_lock; extern MonitorList mon_list; extern int mon_refcount; +extern HMPCommand hmp_cmds[]; + void monitor_init_qmp(Chardev *chr, int flags); +void monitor_init_hmp(Chardev *chr, int flags); int monitor_puts(Monitor *mon, const char *str); void monitor_data_init(Monitor *mon, int flags, bool skip_flush, @@ -172,4 +175,9 @@ void qmp_send_response(MonitorQMP *mon, const QDict *rsp); void monitor_data_destroy_qmp(MonitorQMP *mon); void monitor_qmp_bh_dispatcher(void *data); +int get_monitor_def(int64_t *pval, const char *name); +void help_cmd(Monitor *mon, const char *name); +void handle_hmp_command(MonitorHMP *mon, const char *cmdline); +int hmp_compare_cmd(const char *name, const char *list); + #endif diff --git a/monitor/trace-events b/monitor/trace-events index a06dde3fd3..2285d26121 100644 --- a/monitor/trace-events +++ b/monitor/trace-events @@ -1,10 +1,12 @@ # See docs/devel/tracing.txt for syntax documentation. +# hmp.c +handle_hmp_command(void *mon, const char *cmdline) "mon %p cmdline: %s" + # misc.c monitor_protocol_event_handler(uint32_t event, void *qdict) "event=%d data=%p" monitor_protocol_event_emit(uint32_t event, void *data) "event=%d data=%p" monitor_protocol_event_queue(uint32_t event, void *qdict, uint64_t rate) "event=%d data=%p rate=%" PRId64 -handle_hmp_command(void *mon, const char *cmdline) "mon %p cmdline: %s" monitor_suspend(void *ptr, int cnt) "mon %p: %d" # qmp.c |