diff options
| -rw-r--r-- | cmd.c | 565 | ||||
| -rw-r--r-- | cmd.h | 78 | ||||
| -rw-r--r-- | qemu-io.c | 1074 |
3 files changed, 1717 insertions, 0 deletions
@@ -0,0 +1,565 @@ +/* + * Copyright (c) 2003-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#include "cmd.h" + +#define _(x) x /* not gettext support yet */ + +extern int optind; + +/* from libxcmd/command.c */ + +cmdinfo_t *cmdtab; +int ncmds; + +static argsfunc_t args_func; +static checkfunc_t check_func; +static int ncmdline; +static char **cmdline; + +static int +compare(const void *a, const void *b) +{ + return strcmp(((const cmdinfo_t *)a)->name, + ((const cmdinfo_t *)b)->name); +} + +void +add_command( + const cmdinfo_t *ci) +{ + cmdtab = realloc((void *)cmdtab, ++ncmds * sizeof(*cmdtab)); + cmdtab[ncmds - 1] = *ci; + qsort(cmdtab, ncmds, sizeof(*cmdtab), compare); +} + +static int +check_command( + const cmdinfo_t *ci) +{ + if (check_func) + return check_func(ci); + return 1; +} + +void +add_check_command( + checkfunc_t cf) +{ + check_func = cf; +} + +int +command_usage( + const cmdinfo_t *ci) +{ + printf("%s %s -- %s\n", ci->name, ci->args, ci->oneline); + return 0; +} + +int +command( + const cmdinfo_t *ct, + int argc, + char **argv) +{ + char *cmd = argv[0]; + + if (!check_command(ct)) + return 0; + + if (argc-1 < ct->argmin || (ct->argmax != -1 && argc-1 > ct->argmax)) { + if (ct->argmax == -1) + fprintf(stderr, + _("bad argument count %d to %s, expected at least %d arguments\n"), + argc-1, cmd, ct->argmin); + else if (ct->argmin == ct->argmax) + fprintf(stderr, + _("bad argument count %d to %s, expected %d arguments\n"), + argc-1, cmd, ct->argmin); + else + fprintf(stderr, + _("bad argument count %d to %s, expected between %d and %d arguments\n"), + argc-1, cmd, ct->argmin, ct->argmax); + return 0; + } + optind = 0; + return ct->cfunc(argc, argv); +} + +const cmdinfo_t * +find_command( + const char *cmd) +{ + cmdinfo_t *ct; + + for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) { + if (strcmp(ct->name, cmd) == 0 || + (ct->altname && strcmp(ct->altname, cmd) == 0)) + return (const cmdinfo_t *)ct; + } + return NULL; +} + +void +add_user_command(char *optarg) +{ + ncmdline++; + cmdline = realloc(cmdline, sizeof(char*) * (ncmdline)); + if (!cmdline) { + perror("realloc"); + exit(1); + } + cmdline[ncmdline-1] = optarg; +} + +static int +args_command( + int index) +{ + if (args_func) + return args_func(index); + return 0; +} + +void +add_args_command( + argsfunc_t af) +{ + args_func = af; +} + +void +command_loop(void) +{ + int c, i, j = 0, done = 0; + char *input; + char **v; + const cmdinfo_t *ct; + + for (i = 0; !done && i < ncmdline; i++) { + input = strdup(cmdline[i]); + if (!input) { + fprintf(stderr, + _("cannot strdup command '%s': %s\n"), + cmdline[i], strerror(errno)); + exit(1); + } + v = breakline(input, &c); + if (c) { + ct = find_command(v[0]); + if (ct) { + if (ct->flags & CMD_FLAG_GLOBAL) + done = command(ct, c, v); + else { + j = 0; + while (!done && (j = args_command(j))) + done = command(ct, c, v); + } + } else + fprintf(stderr, _("command \"%s\" not found\n"), + v[0]); + } + doneline(input, v); + } + if (cmdline) { + free(cmdline); + return; + } + while (!done) { + if ((input = fetchline()) == NULL) + break; + v = breakline(input, &c); + if (c) { + ct = find_command(v[0]); + if (ct) + done = command(ct, c, v); + else + fprintf(stderr, _("command \"%s\" not found\n"), + v[0]); + } + doneline(input, v); + } +} + +/* from libxcmd/input.c */ + +#if defined(ENABLE_READLINE) +# include <readline/history.h> +# include <readline/readline.h> +#elif defined(ENABLE_EDITLINE) +# include <histedit.h> +#endif + +extern char *progname; + +static char * +get_prompt(void) +{ + static char prompt[FILENAME_MAX + 2 /*"> "*/ + 1 /*"\0"*/ ]; + + if (!prompt[0]) + snprintf(prompt, sizeof(prompt), "%s> ", progname); + return prompt; +} + +#if defined(ENABLE_READLINE) +char * +fetchline(void) +{ + char *line; + + line = readline(get_prompt()); + if (line && *line) + add_history(line); + return line; +} +#elif defined(ENABLE_EDITLINE) +static char *el_get_prompt(EditLine *e) { return get_prompt(); } +char * +fetchline(void) +{ + static EditLine *el; + static History *hist; + HistEvent hevent; + char *line; + int count; + + if (!el) { + hist = history_init(); + history(hist, &hevent, H_SETSIZE, 100); + el = el_init(progname, stdin, stdout, stderr); + el_source(el, NULL); + el_set(el, EL_SIGNAL, 1); + el_set(el, EL_PROMPT, el_get_prompt); + el_set(el, EL_HIST, history, (const char *)hist); + } + line = strdup(el_gets(el, &count)); + if (line) { + if (count > 0) + line[count-1] = '\0'; + if (*line) + history(hist, &hevent, H_ENTER, line); + } + return line; +} +#else +# define MAXREADLINESZ 1024 +char * +fetchline(void) +{ + char *p, *line = malloc(MAXREADLINESZ); + + if (!line) + return NULL; + printf("%s", get_prompt()); + fflush(stdout); + if (!fgets(line, MAXREADLINESZ, stdin)) { + free(line); + return NULL; + } + p = line + strlen(line); + if (p != line && p[-1] == '\n') + p[-1] = '\0'; + return line; +} +#endif + +char ** +breakline( + char *input, + int *count) +{ + int c = 0; + char *p; + char **rval = calloc(sizeof(char *), 1); + + while (rval && (p = strsep(&input, " ")) != NULL) { + if (!*p) + continue; + c++; + rval = realloc(rval, sizeof(*rval) * (c + 1)); + if (!rval) { + c = 0; + break; + } + rval[c - 1] = p; + rval[c] = NULL; + } + *count = c; + return rval; +} + +void +doneline( + char *input, + char **vec) +{ + free(input); + free(vec); +} + +#define EXABYTES(x) ((long long)(x) << 60) +#define PETABYTES(x) ((long long)(x) << 50) +#define TERABYTES(x) ((long long)(x) << 40) +#define GIGABYTES(x) ((long long)(x) << 30) +#define MEGABYTES(x) ((long long)(x) << 20) +#define KILOBYTES(x) ((long long)(x) << 10) + +long long +cvtnum( + char *s) +{ + long long i; + char *sp; + int c; + + i = strtoll(s, &sp, 0); + if (i == 0 && sp == s) + return -1LL; + if (*sp == '\0') + return i; + + if (sp[1] != '\0') + return -1LL; + + c = tolower(*sp); + switch (c) { + default: + return i; + case 'k': + return KILOBYTES(i); + case 'm': + return MEGABYTES(i); + case 'g': + return GIGABYTES(i); + case 't': + return TERABYTES(i); + case 'p': + return PETABYTES(i); + case 'e': + return EXABYTES(i); + } + return -1LL; +} + +#define TO_EXABYTES(x) ((x) / EXABYTES(1)) +#define TO_PETABYTES(x) ((x) / PETABYTES(1)) +#define TO_TERABYTES(x) ((x) / TERABYTES(1)) +#define TO_GIGABYTES(x) ((x) / GIGABYTES(1)) +#define TO_MEGABYTES(x) ((x) / MEGABYTES(1)) +#define TO_KILOBYTES(x) ((x) / KILOBYTES(1)) + +void +cvtstr( + double value, + char *str, + size_t size) +{ + const char *fmt; + int precise; + + precise = ((double)value * 1000 == (double)(int)value * 1000); + + if (value >= EXABYTES(1)) { + fmt = precise ? "%.f EiB" : "%.3f EiB"; + snprintf(str, size, fmt, TO_EXABYTES(value)); + } else if (value >= PETABYTES(1)) { + fmt = precise ? "%.f PiB" : "%.3f PiB"; + snprintf(str, size, fmt, TO_PETABYTES(value)); + } else if (value >= TERABYTES(1)) { + fmt = precise ? "%.f TiB" : "%.3f TiB"; + snprintf(str, size, fmt, TO_TERABYTES(value)); + } else if (value >= GIGABYTES(1)) { + fmt = precise ? "%.f GiB" : "%.3f GiB"; + snprintf(str, size, fmt, TO_GIGABYTES(value)); + } else if (value >= MEGABYTES(1)) { + fmt = precise ? "%.f MiB" : "%.3f MiB"; + snprintf(str, size, fmt, TO_MEGABYTES(value)); + } else if (value >= KILOBYTES(1)) { + fmt = precise ? "%.f KiB" : "%.3f KiB"; + snprintf(str, size, fmt, TO_KILOBYTES(value)); + } else { + snprintf(str, size, "%f bytes", value); + } +} + +struct timeval +tsub(struct timeval t1, struct timeval t2) +{ + t1.tv_usec -= t2.tv_usec; + if (t1.tv_usec < 0) { + t1.tv_usec += 1000000; + t1.tv_sec--; + } + t1.tv_sec -= t2.tv_sec; + return t1; +} + +double +tdiv(double value, struct timeval tv) +{ + return value / ((double)tv.tv_sec + ((double)tv.tv_usec / 1000000.0)); +} + +#define HOURS(sec) ((sec) / (60 * 60)) +#define MINUTES(sec) (((sec) % (60 * 60)) / 60) +#define SECONDS(sec) ((sec) % 60) + +void +timestr( + struct timeval *tv, + char *ts, + size_t size, + int format) +{ + double usec = (double)tv->tv_usec / 1000000.0; + + if (format & TERSE_FIXED_TIME) { + if (!HOURS(tv->tv_sec)) { + snprintf(ts, size, "%u:%02u.%02u", + (unsigned int) MINUTES(tv->tv_sec), + (unsigned int) SECONDS(tv->tv_sec), + (unsigned int) usec * 100); + return; + } + format |= VERBOSE_FIXED_TIME; /* fallback if hours needed */ + } + + if ((format & VERBOSE_FIXED_TIME) || tv->tv_sec) { + snprintf(ts, size, "%u:%02u:%02u.%02u", + (unsigned int) HOURS(tv->tv_sec), + (unsigned int) MINUTES(tv->tv_sec), + (unsigned int) SECONDS(tv->tv_sec), + (unsigned int) usec * 100); + } else { + snprintf(ts, size, "0.%04u sec", (unsigned int) usec * 10000); + } +} + + +/* from libxcmd/quit.c */ + +static cmdinfo_t quit_cmd; + +/* ARGSUSED */ +static int +quit_f( + int argc, + char **argv) +{ + return 1; +} + +void +quit_init(void) +{ + quit_cmd.name = _("quit"); + quit_cmd.altname = _("q"); + quit_cmd.cfunc = quit_f; + quit_cmd.argmin = -1; + quit_cmd.argmax = -1; + quit_cmd.flags = CMD_FLAG_GLOBAL; + quit_cmd.oneline = _("exit the program"); + + add_command(&quit_cmd); +} + +/* from libxcmd/help.c */ + +static cmdinfo_t help_cmd; +static void help_onecmd(const char *cmd, const cmdinfo_t *ct); +static void help_oneline(const char *cmd, const cmdinfo_t *ct); + +static void +help_all(void) +{ + const cmdinfo_t *ct; + + for (ct = cmdtab; ct < &cmdtab[ncmds]; ct++) + help_oneline(ct->name, ct); + printf(_("\nUse 'help commandname' for extended help.\n")); +} + +static int +help_f( + int argc, + char **argv) +{ + const cmdinfo_t *ct; + + if (argc == 1) { + help_all(); + return 0; + } + ct = find_command(argv[1]); + if (ct == NULL) { + printf(_("command %s not found\n"), argv[1]); + return 0; + } + help_onecmd(argv[1], ct); + return 0; +} + +static void +help_onecmd( + const char *cmd, + const cmdinfo_t *ct) +{ + help_oneline(cmd, ct); + if (ct->help) + ct->help(); +} + +static void +help_oneline( + const char *cmd, + const cmdinfo_t *ct) +{ + if (cmd) + printf("%s ", cmd); + else { + printf("%s ", ct->name); + if (ct->altname) + printf("(or %s) ", ct->altname); + } + if (ct->args) + printf("%s ", ct->args); + printf("-- %s\n", ct->oneline); +} + +void +help_init(void) +{ + help_cmd.name = _("help"); + help_cmd.altname = _("?"); + help_cmd.cfunc = help_f; + help_cmd.argmin = 0; + help_cmd.argmax = 1; + help_cmd.flags = CMD_FLAG_GLOBAL; + help_cmd.args = _("[command]"); + help_cmd.oneline = _("help for one or all commands"); + + add_command(&help_cmd); +} @@ -0,0 +1,78 @@ +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef __COMMAND_H__ +#define __COMMAND_H__ + +#define CMD_FLAG_GLOBAL ((int)0x80000000) /* don't iterate "args" */ + +typedef int (*cfunc_t)(int argc, char **argv); +typedef void (*helpfunc_t)(void); + +typedef struct cmdinfo { + const char *name; + const char *altname; + cfunc_t cfunc; + int argmin; + int argmax; + int canpush; + int flags; + const char *args; + const char *oneline; + helpfunc_t help; +} cmdinfo_t; + +extern cmdinfo_t *cmdtab; +extern int ncmds; + +extern void help_init(void); +extern void quit_init(void); + +typedef int (*argsfunc_t)(int index); +typedef int (*checkfunc_t)(const cmdinfo_t *ci); + +extern void add_command(const cmdinfo_t *ci); +extern void add_user_command(char *optarg); +extern void add_args_command(argsfunc_t af); +extern void add_check_command(checkfunc_t cf); + +extern const cmdinfo_t *find_command(const char *cmd); + +extern void command_loop(void); +extern int command_usage(const cmdinfo_t *ci); +extern int command(const cmdinfo_t *ci, int argc, char **argv); + +/* from input.h */ +extern char **breakline(char *input, int *count); +extern void doneline(char *input, char **vec); +extern char *fetchline(void); + +extern long long cvtnum(char *s); +extern void cvtstr(double value, char *str, size_t sz); + +extern struct timeval tsub(struct timeval t1, struct timeval t2); +extern double tdiv(double value, struct timeval tv); + +enum { + DEFAULT_TIME = 0x0, + TERSE_FIXED_TIME = 0x1, + VERBOSE_FIXED_TIME = 0x2 +}; + +extern void timestr(struct timeval *tv, char *str, size_t sz, int flags); + +#endif /* __COMMAND_H__ */ diff --git a/qemu-io.c b/qemu-io.c new file mode 100644 index 0000000000..466d22cb39 --- /dev/null +++ b/qemu-io.c @@ -0,0 +1,1074 @@ +/* + * Command line utility to exercise the QEMU I/O path. + * + * Copyright (C) 2009 Red Hat, Inc. + * Copyright (c) 2003-2005 Silicon Graphics, Inc. + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + */ +#include <sys/types.h> +#include <stdarg.h> +#include <stdio.h> +#include <getopt.h> + +#include "qemu-common.h" +#include "block_int.h" +#include "cmd.h" + +#define VERSION "0.0.1" + +#define CMD_NOFILE_OK 0x01 + +char *progname; +static BlockDriverState *bs; + +static int misalign; + +/* + * Memory allocation helpers. + * + * Make sure memory is aligned by default, or purposefully misaligned if + * that is specified on the command line. + */ + +#define MISALIGN_OFFSET 16 +static void *qemu_io_alloc(size_t len, int pattern) +{ + void *buf; + + if (misalign) + len += MISALIGN_OFFSET; + buf = qemu_memalign(512, len); + memset(buf, pattern, len); + if (misalign) + buf += MISALIGN_OFFSET; + return buf; +} + +static void qemu_io_free(void *p) +{ + if (misalign) + p -= MISALIGN_OFFSET; + qemu_vfree(p); +} + +static void +dump_buffer(char *buffer, int64_t offset, int len) +{ + int i, j; + char *p; + + for (i = 0, p = buffer; i < len; i += 16) { + char *s = p; + + printf("%08llx: ", (unsigned long long)offset + i); + for (j = 0; j < 16 && i + j < len; j++, p++) + printf("%02x ", *p); + printf(" "); + for (j = 0; j < 16 && i + j < len; j++, s++) { + if (isalnum((int)*s)) + printf("%c", *s); + else + printf("."); + } + printf("\n"); + } +} + +static void +print_report(const char *op, struct timeval *t, int64_t offset, + int count, int total, int cnt, int Cflag) +{ + char s1[64], s2[64], ts[64]; + + timestr(t, ts, sizeof(ts), Cflag ? VERBOSE_FIXED_TIME : 0); + if (!Cflag) { + cvtstr((double)total, s1, sizeof(s1)); + cvtstr(tdiv((double)total, *t), s2, sizeof(s2)); + printf("%s %d/%d bytes at offset %lld\n", + op, total, count, (long long)offset); + printf("%s, %d ops; %s (%s/sec and %.4f ops/sec)\n", + s1, cnt, ts, s2, tdiv((double)cnt, *t)); + } else {/* bytes,ops,time,bytes/sec,ops/sec */ + printf("%d,%d,%s,%.3f,%.3f\n", + total, cnt, ts, + tdiv((double)total, *t), + tdiv((double)cnt, *t)); + } +} + +static int do_read(char *buf, int64_t offset, int count, int *total) +{ + int ret; + + ret = bdrv_read(bs, offset >> 9, (uint8_t *)buf, count >> 9); + if (ret < 0) + return ret; + *total = count; + return 1; +} + +static int do_write(char *buf, int64_t offset, int count, int *total) +{ + int ret; + + ret = bdrv_write(bs, offset >> 9, (uint8_t *)buf, count >> 9); + if (ret < 0) + return ret; + *total = count; + return 1; +} + +static int do_pread(char *buf, int64_t offset, int count, int *total) +{ + *total = bdrv_pread(bs, offset, (uint8_t *)buf, count); + if (*total < 0) + return *total; + return 1; +} + +static int do_pwrite(char *buf, int64_t offset, int count, int *total) +{ + *total = bdrv_pwrite(bs, offset, (uint8_t *)buf, count); + if (*total < 0) + return *total; + return 1; +} + +#define NOT_DONE 0x7fffffff +static void aio_rw_done(void *opaque, int ret) +{ + *(int *)opaque = ret; +} + +static int do_aio_readv(QEMUIOVector *qiov, int64_t offset, int *total) +{ + BlockDriverAIOCB *acb; + int async_ret = NOT_DONE; + + acb = bdrv_aio_readv(bs, offset >> 9, qiov, qiov->size >> 9, + aio_rw_done, &async_ret); + if (!acb) + return -EIO; + + while (async_ret == NOT_DONE) + qemu_aio_wait(); + + *total = qiov->size; + return async_ret < 0 ? async_ret : 1; +} + +static int do_aio_writev(QEMUIOVector *qiov, int64_t offset, int *total) +{ + BlockDriverAIOCB *acb; + int async_ret = NOT_DONE; + + acb = bdrv_aio_writev(bs, offset >> 9, qiov, qiov->size >> 9, + aio_rw_done, &async_ret); + if (!acb) + return -EIO; + + while (async_ret == NOT_DONE) + qemu_aio_wait(); + + *total = qiov->size >> 9; + return async_ret < 0 ? async_ret : 1; +} + + +static const cmdinfo_t read_cmd; + +static void +read_help(void) +{ + printf( +"\n" +" reads a range of bytes from the given offset\n" +"\n" +" Example:\n" +" 'read -v 512 1k' - dumps 1 kilobyte read from 512 bytes into the file\n" +"\n" +" Reads a segment of the currently open file, optionally dumping it to the\n" +" standard output stream (with -v option) for subsequent inspection.\n" +" -p, -- use bdrv_pread to read the file\n" +" -C, -- report statistics in a machine parsable format\n" +" -v, -- dump buffer to standard output\n" +" -q, -- quite mode, do not show I/O statistics\n" +"\n"); +} + +static int +read_f(int argc, char **argv) +{ + struct timeval t1, t2; + int Cflag = 0, pflag = 0, qflag = 0, vflag = 0; + int c, cnt; + char *buf; + int64_t offset; + int count, total; + + while ((c = getopt(argc, argv, "Cpqv")) != EOF) { + switch (c) { + case 'C': + Cflag = 1; + break; + case 'p': + pflag = 1; + break; + case 'q': + qflag = 1; + break; + case 'v': + vflag = 1; + break; + default: + return command_usage(&read_cmd); + } + } + + if (optind != argc - 2) + return command_usage(&read_cmd); + + offset = cvtnum(argv[optind]); + if (offset < 0) { + printf("non-numeric length argument -- %s\n", argv[optind]); + return 0; + } + + optind++; + count = cvtnum(argv[optind]); + if (count < 0) { + printf("non-numeric length argument -- %s\n", argv[optind]); + return 0; + } + + if (!pflag) + if (offset & 0x1ff) { + printf("offset %lld is not sector aligned\n", + (long long)offset); + return 0; + + if (count & 0x1ff) { + printf("count %d is not sector aligned\n", + count); + return 0; + } + } + + buf = qemu_io_alloc(count, 0xab); + + gettimeofday(&t1, NULL); + if (pflag) + cnt = do_pread(buf, offset, count, &total); + else + cnt = do_read(buf, offset, count, &total); + gettimeofday(&t2, NULL); + + if (cnt < 0) { + printf("read failed: %s\n", strerror(-cnt)); + return 0; + } + + if (qflag) + return 0; + + if (vflag) + dump_buffer(buf, offset, count); + + /* Finally, report back -- -C gives a parsable format */ + t2 = tsub(t2, t1); + print_report("read", &t2, offset, count, total, cnt, Cflag); + + qemu_io_free(buf); + + return 0; +} + +static const cmdinfo_t read_cmd = { + .name = "read", + .altname = "r", + .cfunc = read_f, + .argmin = 2, + .argmax = -1, + .args = "[-aCpqv] off len", + .oneline = "reads a number of bytes at a specified offset", + .help = read_help, +}; + +static const cmdinfo_t readv_cmd; + +static void +readv_help(void) +{ + printf( +"\n" +" reads a range of bytes from the given offset into multiple buffers\n" +"\n" +" Example:\n" +" 'readv -v 512 1k 1k ' - dumps 2 kilobytes read from 512 bytes into the file\n" +"\n" +" Reads a segment of the currently open file, optionally dumping it to the\n" +" standard output stream (with -v option) for subsequent inspection.\n" +" Uses multiple iovec buffers if more than one byte range is specified.\n" +" -C, -- report statistics in a machine parsable format\n" +" -v, -- dump buffer to standard output\n" +" -q, -- quite mode, do not show I/O statistics\n" +"\n"); +} + +static int +readv_f(int argc, char **argv) +{ + struct timeval t1, t2; + int Cflag = 0, qflag = 0, vflag = 0; + int c, cnt; + char *buf, *p; + int64_t offset; + int count = 0, total; + int nr_iov, i; + QEMUIOVector qiov; + + while ((c = getopt(argc, argv, "Cqv")) != EOF) { + switch (c) { + case 'C': + Cflag = 1; + break; + case 'q': + qflag = 1; + break; + case 'v': + vflag = 1; + break; + default: + return command_usage(&readv_cmd); + } + } + + if (optind > argc - 2) + return command_usage(&readv_cmd); + + + offset = cvtnum(argv[optind]); + if (offset < 0) { + printf("non-numeric length argument -- %s\n", argv[optind]); + return 0; + } + optind++; + + if (offset & 0x1ff) { + printf("offset %lld is not sector aligned\n", + (long long)offset); + return 0; + } + + if (count & 0x1ff) { + printf("count %d is not sector aligned\n", + count); + return 0; + } + + for (i = optind; i < argc; i++) { + size_t len; + + len = cvtnum(argv[i]); + if (len < 0) { + printf("non-numeric length argument -- %s\n", argv[i]); + return 0; + } + count += len; + } + + nr_iov = argc - optind; + qemu_iovec_init(&qiov, nr_iov); + buf = p = qemu_io_alloc(count, 0xab); + for (i = 0; i < nr_iov; i++) { + size_t len; + + len = cvtnum(argv[optind]); + if (len < 0) { + printf("non-numeric length argument -- %s\n", + argv[optind]); + return 0; + } + + qemu_iovec_add(&qiov, p, len); + p += len; + optind++; + } + + gettimeofday(&t1, NULL); + cnt = do_aio_readv(&qiov, offset, &total); + gettimeofday(&t2, NULL); + + if (cnt < 0) { + printf("readv failed: %s\n", strerror(-cnt)); + return 0; + } + + if (qflag) + return 0; + + if (vflag) + dump_buffer(buf, offset, qiov.size); + + /* Finally, report back -- -C gives a parsable format */ + t2 = tsub(t2, t1); + print_report("read", &t2, offset, qiov.size, total, cnt, Cflag); + + qemu_io_free(buf); + + return 0; +} + +static const cmdinfo_t readv_cmd = { + .name = "readv", + .cfunc = readv_f, + .argmin = 2, + .argmax = -1, + .args = "[-Cqv] off len [len..]", + .oneline = "reads a number of bytes at a specified offset", + .help = readv_help, +}; + +static const cmdinfo_t write_cmd; + +static void +write_help(void) +{ + printf( +"\n" +" writes a range of bytes from the given offset\n" +"\n" +" Example:\n" +" 'write 512 1k' - writes 1 kilobyte at 512 bytes into the open file\n" +"\n" +" Writes into a segment of the currently open file, using a buffer\n" +" filled with a set pattern (0xcdcdcdcd).\n" +" -p, -- use bdrv_pwrite to write the file\n" +" -P, -- use different pattern to fill file\n" +" -C, -- report statistics in a machine parsable format\n" +" -q, -- quite mode, do not show I/O statistics\n" +"\n"); +} + +static int +write_f(int argc, char **argv) +{ + struct timeval t1, t2; + int Cflag = 0, pflag = 0, qflag = 0; + int c, cnt; + char *buf; + int64_t offset; + int count, total; + int pattern = 0xcd; + + while ((c = getopt(argc, argv, "CpP:q")) != EOF) { + switch (c) { + case 'C': + Cflag = 1; + break; + case 'p': + pflag = 1; + break; + case 'P': + pattern = atoi(optarg); + break; + case 'q': + qflag = 1; + break; + default: + return command_usage(&write_cmd); + } + } + + if (optind != argc - 2) + return command_usage(&write_cmd); + + offset = cvtnum(argv[optind]); + if (offset < 0) { + printf("non-numeric length argument -- %s\n", argv[optind]); + return 0; + } + + optind++; + count = cvtnum(argv[optind]); + if (count < 0) { + printf("non-numeric length argument -- %s\n", argv[optind]); + return 0; + } + + if (!pflag) { + if (offset & 0x1ff) { + printf("offset %lld is not sector aligned\n", + (long long)offset); + return 0; + } + + if (count & 0x1ff) { + printf("count %d is not sector aligned\n", + count); + return 0; + } + } + + buf = qemu_io_alloc(count, pattern); + + gettimeofday(&t1, NULL); + if (pflag) + cnt = do_pwrite(buf, offset, count, &total); + else + cnt = do_write(buf, offset, count, &total); + gettimeofday(&t2, NULL); + + if (cnt < 0) { + printf("write failed: %s\n", strerror(-cnt)); + return 0; + } + + if (qflag) + return 0; + + /* Finally, report back -- -C gives a parsable format */ + t2 = tsub(t2, t1); + print_report("wrote", &t2, offset, count, total, cnt, Cflag); + + qemu_io_free(buf); + + return 0; +} + +static const cmdinfo_t write_cmd = { + .name = "write", + .altname = "w", + .cfunc = write_f, + .argmin = 2, + .argmax = -1, + .args = "[-aCpq] [-P pattern ] off len", + .oneline = "writes a number of bytes at a specified offset", + .help = write_help, +}; + +static const cmdinfo_t writev_cmd; + +static void +writev_help(void) +{ + printf( +"\n" +" writes a range of bytes from the given offset source from multiple buffers\n" +"\n" +" Example:\n" +" 'write 512 1k 1k' - writes 2 kilobytes at 512 bytes into the open file\n" +"\n" +" Writes into a segment of the currently open file, using a buffer\n" +" filled with a set pattern (0xcdcdcdcd).\n" +" -P, -- use different pattern to fill file\n" +" -C, -- report statistics in a machine parsable format\n" +" -q, -- quite mode, do not show I/O statistics\n" +"\n"); +} + +static int +writev_f(int argc, char **argv) +{ + struct timeval t1, t2; + int Cflag = 0, qflag = 0; + int c, cnt; + char *buf, *p; + int64_t offset; + int count = 0, total; + int nr_iov, i; + int pattern = 0xcd; + QEMUIOVector qiov; + + while ((c = getopt(argc, argv, "CqP:")) != EOF) { + switch (c) { + case 'C': + Cflag = 1; + break; + case 'q': + qflag = 1; + break; + case 'P': + pattern = atoi(optarg); + break; + default: + return command_usage(&writev_cmd); + } + } + + if (optind > argc - 2) + return command_usage(&writev_cmd); + + offset = cvtnum(argv[optind]); + if (offset < 0) { + printf("non-numeric length argument -- %s\n", argv[optind]); + return 0; + } + optind++; + + if (offset & 0x1ff) { + printf("offset %lld is not sector aligned\n", + (long long)offset); + return 0; + } + + if (count & 0x1ff) { + printf("count %d is not sector aligned\n", + count); + return 0; + } + + + for (i = optind; i < argc; i++) { + size_t len; + + len = cvtnum(argv[optind]); + if (len < 0) { + printf("non-numeric length argument -- %s\n", argv[i]); + return 0; + } + count += len; + } + + nr_iov = argc - optind; + qemu_iovec_init(&qiov, nr_iov); + buf = p = qemu_io_alloc(count, 0xab); + for (i = 0; i < nr_iov; i++) { + size_t len; + + len = cvtnum(argv[optind]); + if (len < 0) { + printf("non-numeric length argument -- %s\n", + argv[optind]); + return 0; + } + + qemu_iovec_add(&qiov, p, len); + p += len; + optind++; + } + + gettimeofday(&t1, NULL); + cnt = do_aio_writev(&qiov, offset, &total); + gettimeofday(&t2, NULL); + + if (cnt < 0) { + printf("writev failed: %s\n", strerror(-cnt)); + return 0; + } + + if (qflag) + return 0; + + /* Finally, report back -- -C gives a parsable format */ + t2 = tsub(t2, t1); + print_report("wrote", &t2, offset, qiov.size, total, cnt, Cflag); + + qemu_io_free(buf); + + return 0; +} + +static const cmdinfo_t writev_cmd = { + .name = "writev", + .cfunc = writev_f, + .argmin = 2, + .argmax = -1, + .args = "[-Cq] [-P pattern ] off len [len..]", + .oneline = "writes a number of bytes at a specified offset", + .help = writev_help, +}; + +static int +flush_f(int argc, char **argv) +{ + bdrv_flush(bs); + return 0; +} + +static const cmdinfo_t flush_cmd = { + .name = "flush", + .altname = "f", + .cfunc = flush_f, + .oneline = "flush all in-core file state to disk", +}; + +static int +truncate_f(int argc, char **argv) +{ + int64_t offset; + int ret; + + offset = cvtnum(argv[1]); + if (offset < 0) { + printf("non-numeric truncate argument -- %s\n", argv[1]); + return 0; + } + + ret = bdrv_truncate(bs, offset); + if (ret < 0) { + printf("truncate: %s", strerror(ret)); + return 0; + } + + return 0; +} + +static const cmdinfo_t truncate_cmd = { + .name = "truncate", + .altname = "t", + .cfunc = truncate_f, + .argmin = 1, + .argmax = 1, + .args = "off", + .oneline = "truncates the current file at the given offset", +}; + +static int +length_f(int argc, char **argv) +{ + int64_t size; + char s1[64]; + + size = bdrv_getlength(bs); + if (size < 0) { + printf("getlength: %s", strerror(size)); + return 0; + } + + cvtstr(size, s1, sizeof(s1)); + printf("%s\n", s1); + return 0; +} + + +static const cmdinfo_t length_cmd = { + .name = "length", + .altname = "l", + .cfunc = length_f, + .oneline = "gets the length of the current file", +}; + + +static int +info_f(int argc, char **argv) +{ + BlockDriverInfo bdi; + char s1[64], s2[64]; + int ret; + + if (bs->drv && bs->drv->format_name) + printf("format name: %s\n", bs->drv->format_name); + if (bs->drv && bs->drv->protocol_name) + printf("format name: %s\n", bs->drv->protocol_name); + + ret = bdrv_get_info(bs, &bdi); + if (ret) + return 0; + + cvtstr(bdi.cluster_size, s1, sizeof(s1)); + cvtstr(bdi.vm_state_offset, s2, sizeof(s2)); + + printf("cluster size: %s\n", s1); + printf("vm state offset: %s\n", s2); + + return 0; +} + + + +static const cmdinfo_t info_cmd = { + .name = "info", + .altname = "i", + .cfunc = info_f, + .oneline = "prints information about the current file", +}; + +static int +alloc_f(int argc, char **argv) +{ + int64_t offset; + int nb_sectors; + char s1[64]; + int num; + int ret; + + offset = cvtnum(argv[1]); + if (offset & 0x1ff) { + printf("offset %lld is not sector aligned\n", + (long long)offset); + return 0; + } + + if (argc == 3) + nb_sectors = cvtnum(argv[2]); + else + nb_sectors = 1; + + ret = bdrv_is_allocated(bs, offset >> 9, nb_sectors, &num); + if (ret) { + printf("is_allocated: %s", strerror(ret)); + return 0; + } + + cvtstr(offset, s1, sizeof(s1)); + + if (nb_sectors == 1) + printf("sector allocated at offset %s\n", s1); + else + printf("%d/%d sectors allocated at offset %s\n", + num, nb_sectors, s1); + return 0; +} + +static const cmdinfo_t alloc_cmd = { + .name = "alloc", + .altname = "a", + .argmin = 1, + .argmax = 2, + .cfunc = alloc_f, + .args = "off [sectors]", + .oneline = "checks if a sector is present in the file", +}; + +static int +close_f(int argc, char **argv) +{ + bdrv_close(bs); + bs = NULL; + return 0; +} + +static const cmdinfo_t close_cmd = { + .name = "close", + .altname = "c", + .cfunc = close_f, + .oneline = "close the current open file", +}; + +static int openfile(char *name, int flags) +{ + if (bs) { + fprintf(stderr, "file open already, try 'help close'\n"); + return 1; + } + + bs = bdrv_new("hda"); + if (!bs) + return 1; + + if (bdrv_open(bs, name, flags) == -1) { + fprintf(stderr, "%s: can't open device %s\n", progname, name); + bs = NULL; + return 1; + } + + return 0; +} + +static void +open_help(void) +{ + printf( +"\n" +" opens a new file in the requested mode\n" +"\n" +" Example:\n" +" 'open -Cn /tmp/data' - creates/opens data file read-write and uncached\n" +"\n" +" Opens a file for subsequent use by all of the other qemu-io commands.\n" +" -C, -- create new file if it doesn't exist\n" +" -r, -- open file read-only\n" +" -s, -- use snapshot file\n" +" -n, -- disable host cache\n" +"\n"); +} + +static const cmdinfo_t open_cmd; + +static int +open_f(int argc, char **argv) +{ + int flags = 0; + int readonly = 0; + int c; + + while ((c = getopt(argc, argv, "snCr")) != EOF) { + switch (c) { + case 's': + flags |= BDRV_O_SNAPSHOT; + break; + case 'n': + flags |= BDRV_O_NOCACHE; + break; + case 'C': + flags |= BDRV_O_CREAT; + break; + case 'r': + readonly = 1; + break; + default: + return command_usage(&open_cmd); + } + } + + if (readonly) + flags |= BDRV_O_RDONLY; + else + flags |= BDRV_O_RDWR; + + if (optind != argc - 1) + return command_usage(&open_cmd); + + return openfile(argv[optind], flags); +} + +static const cmdinfo_t open_cmd = { + .name = "open", + .altname = "o", + .cfunc = open_f, + .argmin = 1, + .argmax = -1, + .flags = CMD_NOFILE_OK, + .args = "[-Crsn] [path]", + .oneline = "open the file specified by path", + .help = open_help, +}; + +static int +init_args_command( + int index) +{ + /* only one device allowed so far */ + if (index >= 1) + return 0; + return ++index; +} + +static int +init_check_command( + const cmdinfo_t *ct) +{ + if (ct->flags & CMD_FLAG_GLOBAL) + return 1; + if (!(ct->flags & CMD_NOFILE_OK) && !bs) { + fprintf(stderr, "no file open, try 'help open'\n"); + return 0; + } + return 1; +} + +static void usage(const char *name) +{ + printf( +"Usage: %s [-h] [-V] [-Crsnm] [-c cmd] ... [file]\n" +"QEMU Disk excerciser\n" +"\n" +" -C, --create create new file if it doesn't exist\n" +" -c, --cmd command to execute\n" +" -r, --read-only export read-only\n" +" -s, --snapshot use snapshot file\n" +" -n, --nocache disable host cache\n" +" -m, --misalign misalign allocations for O_DIRECT\n" +" -h, --help display this help and exit\n" +" -V, --version output version information and exit\n" +"\n", + name); +} + + +int main(int argc, char **argv) +{ + int readonly = 0; + const char *sopt = "hVc:Crsnm"; + struct option lopt[] = { + { "help", 0, 0, 'h' }, + { "version", 0, 0, 'V' }, + { "offset", 1, 0, 'o' }, + { "cmd", 1, 0, 'c' }, + { "create", 0, 0, 'C' }, + { "read-only", 0, 0, 'r' }, + { "snapshot", 0, 0, 's' }, + { "nocache", 0, 0, 'n' }, + { "misalign", 0, 0, 'm' }, + { NULL, 0, 0, 0 } + }; + int c; + int opt_index = 0; + int flags = 0; + + progname = basename(argv[0]); + + while ((c = getopt_long(argc, argv, sopt, lopt, &opt_index)) != -1) { + switch (c) { + case 's': + flags |= BDRV_O_SNAPSHOT; + break; + case 'n': + flags |= BDRV_O_NOCACHE; + break; + case 'c': + add_user_command(optarg); + break; + case 'C': + flags |= BDRV_O_CREAT; + break; + case 'r': + readonly = 1; + break; + case 'm': + misalign = 1; + break; + case 'V': + printf("%s version %s\n", progname, VERSION); + exit(0); + case 'h': + usage(progname); + exit(0); + default: + usage(progname); + exit(1); + } + } + + if ((argc - optind) > 1) { + usage(progname); + exit(1); + } + + bdrv_init(); + + /* initialize commands */ + quit_init(); + help_init(); + add_command(&open_cmd); + add_command(&close_cmd); + add_command(&read_cmd); + add_command(&readv_cmd); + add_command(&write_cmd); + add_command(&writev_cmd); + add_command(&flush_cmd); + add_command(&truncate_cmd); + add_command(&length_cmd); + add_command(&info_cmd); + add_command(&alloc_cmd); + + add_args_command(init_args_command); + add_check_command(init_check_command); + + /* open the device */ + if (readonly) + flags |= BDRV_O_RDONLY; + else + flags |= BDRV_O_RDWR; + + if ((argc - optind) == 1) + openfile(argv[optind], flags); + command_loop(); + + if (bs) + bdrv_close(bs); + return 0; +} |