* 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/time.h>
#include <sys/types.h>
#include <stdarg.h>
#include <stdio.h>
#include <getopt.h>
+#include <libgen.h>
#include "qemu-common.h"
#include "block_int.h"
{
size_t *sizes = calloc(nr_iov, sizeof(size_t));
size_t count = 0;
- void *buf, *p;
+ void *buf = NULL;
+ void *p;
int i;
for (i = 0; i < nr_iov; i++) {
len = cvtnum(arg);
if (len < 0) {
printf("non-numeric length argument -- %s\n", arg);
- return NULL;
+ goto fail;
}
/* should be SIZE_T_MAX, but that doesn't exist */
if (len > UINT_MAX) {
printf("too large length argument -- %s\n", arg);
- return NULL;
+ goto fail;
}
if (len & 0x1ff) {
printf("length argument %lld is not sector aligned\n",
len);
- return NULL;
+ goto fail;
}
sizes[i] = len;
p += sizes[i];
}
+fail:
free(sizes);
return buf;
}
}
-static const cmdinfo_t read_cmd;
-
static void
read_help(void)
{
"\n");
}
+static int read_f(int argc, char **argv);
+
+static const cmdinfo_t read_cmd = {
+ .name = "read",
+ .altname = "r",
+ .cfunc = read_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-abCpqv] [-P pattern [-s off] [-l len]] off len",
+ .oneline = "reads a number of bytes at a specified offset",
+ .help = read_help,
+};
+
static int
read_f(int argc, char **argv)
{
return 0;
}
-static const cmdinfo_t read_cmd = {
- .name = "read",
- .altname = "r",
- .cfunc = read_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-abCpqv] [-P pattern [-s off] [-l len]] 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)
{
"\n");
}
+static int readv_f(int argc, char **argv);
+
+static const cmdinfo_t readv_cmd = {
+ .name = "readv",
+ .cfunc = readv_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cqv] [-P pattern ] off len [len..]",
+ .oneline = "reads a number of bytes at a specified offset",
+ .help = readv_help,
+};
+
static int
readv_f(int argc, char **argv)
{
return 0;
}
-static const cmdinfo_t readv_cmd = {
- .name = "readv",
- .cfunc = readv_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cqv] [-P pattern ] 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)
{
"\n");
}
+static int write_f(int argc, char **argv);
+
+static const cmdinfo_t write_cmd = {
+ .name = "write",
+ .altname = "w",
+ .cfunc = write_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-abCpq] [-P pattern ] off len",
+ .oneline = "writes a number of bytes at a specified offset",
+ .help = write_help,
+};
+
static int
write_f(int argc, char **argv)
{
return 0;
}
-static const cmdinfo_t write_cmd = {
- .name = "write",
- .altname = "w",
- .cfunc = write_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-abCpq] [-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)
{
"\n");
}
+static int writev_f(int argc, char **argv);
+
+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
writev_f(int argc, char **argv)
{
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,
-};
-
struct aio_ctx {
QEMUIOVector qiov;
int64_t offset;
free(ctx);
}
-static const cmdinfo_t aio_read_cmd;
-
static void
aio_read_done(void *opaque, int ret)
{
"\n");
}
+static int aio_read_f(int argc, char **argv);
+
+static const cmdinfo_t aio_read_cmd = {
+ .name = "aio_read",
+ .cfunc = aio_read_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cqv] [-P pattern ] off len [len..]",
+ .oneline = "asynchronously reads a number of bytes",
+ .help = aio_read_help,
+};
+
static int
aio_read_f(int argc, char **argv)
{
return 0;
}
-static const cmdinfo_t aio_read_cmd = {
- .name = "aio_read",
- .cfunc = aio_read_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cqv] [-P pattern ] off len [len..]",
- .oneline = "asynchronously reads a number of bytes",
- .help = aio_read_help,
-};
-
-static const cmdinfo_t aio_write_cmd;
-
static void
aio_write_help(void)
{
"\n");
}
+static int aio_write_f(int argc, char **argv);
+
+static const cmdinfo_t aio_write_cmd = {
+ .name = "aio_write",
+ .cfunc = aio_write_f,
+ .argmin = 2,
+ .argmax = -1,
+ .args = "[-Cq] [-P pattern ] off len [len..]",
+ .oneline = "asynchronously writes a number of bytes",
+ .help = aio_write_help,
+};
static int
aio_write_f(int argc, char **argv)
return 0;
}
-static const cmdinfo_t aio_write_cmd = {
- .name = "aio_write",
- .cfunc = aio_write_f,
- .argmin = 2,
- .argmax = -1,
- .args = "[-Cq] [-P pattern ] off len [len..]",
- .oneline = "asynchronously writes a number of bytes",
- .help = aio_write_help,
-};
-
static int
aio_flush_f(int argc, char **argv)
{
"\n");
}
-static const cmdinfo_t open_cmd;
+static int open_f(int argc, char **argv);
+
+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
open_f(int argc, char **argv)
return openfile(argv[optind], flags, growable);
}
-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)
" -n, --nocache disable host cache\n"
" -g, --growable allow file to grow (only applies to protocols)\n"
" -m, --misalign misalign allocations for O_DIRECT\n"
+" -k, --native-aio use kernel AIO implementation (on Linux only)\n"
" -h, --help display this help and exit\n"
" -V, --version output version information and exit\n"
"\n",
{
int readonly = 0;
int growable = 0;
- const char *sopt = "hVc:Crsnmg";
- 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' },
- { "growable", 0, 0, 'g' },
- { NULL, 0, 0, 0 }
+ const char *sopt = "hVc:Crsnmgk";
+ const struct option lopt[] = {
+ { "help", 0, NULL, 'h' },
+ { "version", 0, NULL, 'V' },
+ { "offset", 1, NULL, 'o' },
+ { "cmd", 1, NULL, 'c' },
+ { "create", 0, NULL, 'C' },
+ { "read-only", 0, NULL, 'r' },
+ { "snapshot", 0, NULL, 's' },
+ { "nocache", 0, NULL, 'n' },
+ { "misalign", 0, NULL, 'm' },
+ { "growable", 0, NULL, 'g' },
+ { "native-aio", 0, NULL, 'k' },
+ { NULL, 0, NULL, 0 }
};
int c;
int opt_index = 0;
case 'g':
growable = 1;
break;
+ case 'k':
+ flags |= BDRV_O_NATIVE_AIO;
+ break;
case 'V':
printf("%s version %s\n", progname, VERSION);
exit(0);
projects / qemu.git / blobdiff