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ioping.c
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ioping.c
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/*
* ioping -- simple I/0 latency measuring tool
*
* Copyright (C) 2011-2015 Konstantin Khlebnikov <[email protected]>
*
* 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef VERSION
# define VERSION "1.3"
#endif
#ifndef EXTRA_VERSION
# define EXTRA_VERSION ""
#endif
#define _GNU_SOURCE
#define _FILE_OFFSET_BITS 64
#ifdef __MINGW32__
# define _WIN32_WINNT 0x0600
# define _POSIX_C_SOURCE 200809L
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdbool.h>
#include <getopt.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <time.h>
#include <math.h>
#include <limits.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/stat.h>
#define HAVE_GETOPT_LONG_ONLY
#ifdef __linux__
# include <sys/ioctl.h>
# include <sys/sysmacros.h>
# include <sys/syscall.h>
# define HAVE_CLOCK_GETTIME
# define HAVE_POSIX_FADVICE
# define HAVE_POSIX_MEMALIGN
# define HAVE_MKOSTEMP
# define HAVE_DIRECT_IO
# define HAVE_LINUX_ASYNC_IO
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
# define MAX_RW_COUNT 0x7ffff000 /* 2G - 4K */
# undef RWF_NOWAIT
# include <linux/fs.h>
# include <linux/aio_abi.h>
# ifndef RWF_NOWAIT
# define aio_rw_flags aio_reserved1
# endif
#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 32)
# define HAVE_ERR_NAME
#endif
# undef RWF_NOWAIT
# include <sys/uio.h>
# ifdef RWF_NOWAIT
# define HAVE_LINUX_PREADV2
# endif
# ifndef RWF_NOWAIT
# define RWF_NOWAIT 0x00000008
# endif
# ifndef RWF_HIPRI
# define RWF_HIPRI 0x00000001
# endif
#else /* __linux__ */
# ifndef RWF_NOWAIT
# define RWF_NOWAIT 0
# endif
# ifndef RWF_HIPRI
# define RWF_HIPRI 0
# endif
#endif /* __linux__ */
#ifdef __gnu_hurd__
# include <sys/ioctl.h>
# define HAVE_CLOCK_GETTIME
# define HAVE_POSIX_MEMALIGN
# define HAVE_MKOSTEMP
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
#endif
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
# include <sys/ioctl.h>
# include <sys/mount.h>
# include <sys/disk.h>
# define HAVE_CLOCK_GETTIME
# define HAVE_MKOSTEMP
# define HAVE_DIRECT_IO
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
#endif
#ifdef __DragonFly__
# include <sys/diskslice.h>
# define HAVE_CLOCK_GETTIME
# define HAVE_MKOSTEMP
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
#endif
#ifdef __OpenBSD__
# include <sys/ioctl.h>
# include <sys/disklabel.h>
# include <sys/dkio.h>
# include <sys/param.h>
# include <sys/mount.h>
# define HAVE_CLOCK_GETTIME
# define HAVE_POSIX_MEMALIGN
# define HAVE_MKOSTEMP
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
#endif
#ifdef __APPLE__ /* OS X */
# include <sys/ioctl.h>
# include <sys/mount.h>
# include <sys/disk.h>
# include <sys/uio.h>
# define HAVE_FULLFSYNC
# define HAVE_NOCACHE_IO
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
#endif
#ifdef __sun /* Solaris */
# include <sys/dkio.h>
# include <sys/vtoc.h>
# define HAVE_CLOCK_GETTIME
# define HAVE_POSIX_FADVICE
# define HAVE_ERR_INCLUDE
# define HAVE_STATVFS
#endif
#ifdef __MINGW32__ /* Windows */
# include <io.h>
# include <stdarg.h>
# include <windows.h>
# define HAVE_DIRECT_IO
# define HAVE_SYNC_IO
# define HAVE_MKOSTEMP /* not required */
#endif
#if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
# define HAVE_POSIX_FDATASYNC
#endif
#ifdef O_SYNC
# define HAVE_SYNC_IO
#endif
#ifdef O_DSYNC
# define HAVE_DATA_SYNC_IO
#endif
#ifdef HAVE_STATVFS
# include <sys/statvfs.h>
#endif
#ifdef HAVE_ERR_INCLUDE
# include <err.h>
#else
#define ERR_PREFIX "ioping: "
void err(int eval, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, ERR_PREFIX);
vfprintf(stderr, fmt, ap);
fprintf(stderr, ": %s\n", strerror(errno));
va_end(ap);
exit(eval);
}
void errx(int eval, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, ERR_PREFIX);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
exit(eval);
}
void warnx(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, ERR_PREFIX);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
}
#endif /* HAVE_ERR_INCLUDE */
static const char *errno_name(void)
{
#ifdef HAVE_ERR_NAME
return strerrorname_np(errno);
#else
static char buf[16];
switch (errno) {
case ENOENT:
return "ENOENT";
case ENOSYS:
return "ENOSYS";
case ENOMEM:
return "ENOMEM";
case ENODEV:
return "ENODEV";
case EAGAIN:
return "EAGAIN";
case EINTR:
return "EINTR";
case EIO:
return "EIO";
case EPIPE:
return "EPIPE";
case EBUSY:
return "EBUSY";
case EROFS:
return "EROFS";
case ENOSPC:
return "ENOSPC";
case EFBIG:
return "EFBIG";
case EPERM:
return "EPERM";
case EACCES:
return "EACCES";
# ifdef EDQUOT
case EDQUOT:
return "EDQUOT";
# endif
}
snprintf(buf, sizeof(buf), "errno=%d", errno);
return buf;
#endif
}
#define NSEC_PER_SEC 1000000000ll
#define USEC_PER_SEC 1000000L
int timestamp_uptodate;
char timestamp_str[64];
char localtime_str[64];
const char *localtime_fmt = "%b %d %T";
#ifdef HAVE_CLOCK_GETTIME
static inline long long now(void)
{
struct timespec ts;
if (clock_gettime(CLOCK_MONOTONIC, &ts))
err(3, "clock_gettime failed");
return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec;
}
static inline void update_timestamp(void)
{
struct timespec ts;
struct tm tm;
if (timestamp_uptodate)
return;
timestamp_uptodate = 1;
if (clock_gettime(CLOCK_REALTIME, &ts))
err(3, "clock_gettime failed");
snprintf(timestamp_str, sizeof(timestamp_str), "%f",
ts.tv_sec + (double)ts.tv_nsec / NSEC_PER_SEC);
localtime_r(&ts.tv_sec, &tm);
strftime(localtime_str, sizeof(localtime_str), localtime_fmt, &tm);
}
#else
static inline long long now(void)
{
struct timeval tv;
if (gettimeofday(&tv, NULL))
err(3, "gettimeofday failed");
return tv.tv_sec * NSEC_PER_SEC + tv.tv_usec * 1000ll;
}
static inline void update_timestamp(void)
{
struct timeval tv;
struct tm tm;
if (timestamp_uptodate)
return;
timestamp_uptodate = 1;
if (gettimeofday(&tv, NULL))
err(3, "gettimeofday failed");
snprintf(timestamp_str, sizeof(timestamp_str), "%f",
tv.tv_sec + (double)tv.tv_usec / USEC_PER_SEC);
time_t t = tv.tv_sec; /* windows bug */
localtime_r(&t, &tm);
strftime(localtime_str, sizeof(localtime_str), localtime_fmt, &tm);
}
#endif /* HAVE_CLOCK_GETTIME */
#ifndef HAVE_MKOSTEMP
int mkostemp(char *template, int flags)
{
int fd;
fd = mkstemp(template);
if (!flags || fd < 0)
return fd;
close(fd);
return open(template, O_RDWR | flags);
}
#endif
int async = 0;
#ifdef __MINGW32__
ssize_t pread(int fd, void *buf, size_t count, off_t offset)
{
HANDLE h = (HANDLE)_get_osfhandle(fd);
DWORD r;
OVERLAPPED o;
memset(&o, 0, sizeof(o));
o.Offset = offset;
o.OffsetHigh = offset >> 32;
if (ReadFile(h, buf, count, &r, &o))
return r;
if (async && GetLastError() == ERROR_IO_PENDING &&
GetOverlappedResult(h, &o, &r, TRUE))
return r;
return -1;
}
ssize_t pwrite(int fd, void *buf, size_t count, off_t offset)
{
HANDLE h = (HANDLE)_get_osfhandle(fd);
DWORD r;
OVERLAPPED o;
memset(&o, 0, sizeof(o));
o.Offset = offset;
o.OffsetHigh = offset >> 32;
if (WriteFile(h, buf, count, &r, &o))
return r;
if (async && GetLastError() == ERROR_IO_PENDING &&
GetOverlappedResult(h, &o, &r, TRUE))
return r;
return -1;
}
int fsync(int fd)
{
HANDLE h = (HANDLE)_get_osfhandle(fd);
return FlushFileBuffers(h) ? 0 : -1;
}
int nanosleep(const struct timespec *req, struct timespec *rem)
{
(void)rem;
Sleep(req->tv_sec * 1000 + req->tv_nsec / 1000000);
return 0;
}
#endif /* __MINGW32__ */
#ifndef HAVE_POSIX_MEMALIGN
/* don't free it */
int posix_memalign(void **memptr, size_t alignment, size_t size)
{
char *ptr;
ptr = malloc(size + alignment);
if (!ptr)
return -ENOMEM;
*memptr = ptr + alignment - (size_t)ptr % alignment;
return 0;
}
#endif
void version(void)
{
fprintf(stdout, "ioping %s\n", VERSION EXTRA_VERSION);
}
struct suffix {
const char *txt;
long long mul;
};
static struct suffix int_suffix[] = {
{ "T", 1000000000000ll },
{ "G", 1000000000ll },
{ "M", 1000000ll },
{ "k", 1000ll },
{ "", 1ll },
{ "da", 10ll },
{ "P", 1000000000000000ll },
{ "E", 1000000000000000000ll },
{ NULL, 0ll },
};
static struct suffix size_suffix[] = {
/* These are first match for printing */
{ "PiB", 1ll<<50 },
{ "TiB", 1ll<<40 },
{ "GiB", 1ll<<30 },
{ "MiB", 1ll<<20 },
{ "KiB", 1ll<<10 },
{ "B", 1 },
{ "", 1 },
/* Should be decimal, keep binary for compatibility */
{ "k", 1ll<<10 },
{ "kb", 1ll<<10 },
{ "m", 1ll<<20 },
{ "mb", 1ll<<20 },
{ "g", 1ll<<30 },
{ "gb", 1ll<<30 },
{ "t", 1ll<<40 },
{ "tb", 1ll<<40 },
{ "pb", 1ll<<50 },
{ "eb", 1ll<<60 },
{ "sector", 512 },
{ "page", 4096 },
{ NULL, 0ll },
};
static struct suffix time_suffix[] = {
{ "hour", NSEC_PER_SEC * 60 * 60 },
{ "min", NSEC_PER_SEC * 60 },
{ "s", NSEC_PER_SEC },
{ "ms", 1000000ll },
{ "us", 1000ll },
{ "ns", 1ll },
{ "nsec", 1ll },
{ "usec", 1000ll },
{ "msec", 1000000ll },
{ "", NSEC_PER_SEC },
{ "sec", NSEC_PER_SEC },
{ "m", NSEC_PER_SEC * 60 },
{ "h", NSEC_PER_SEC * 60 * 60 },
{ NULL, 0ll },
};
double parse_suffix(const char *str, struct suffix *sfx,
long long min, long long max)
{
char *end;
double val, den;
val = strtod(str, &end);
if (*end == '/') {
if (end == str)
val = 1;
den = strtod(end + 1, &end);
if (!den)
errx(1, "division by zero in parsing argument: %s", str);
val /= den;
}
for ( ; sfx->txt ; sfx++ ) {
if (strcasecmp(end, sfx->txt))
continue;
val *= sfx->mul;
if (val < min || val > max)
errx(1, "integer overflow at parsing argument: %s", str);
return val;
}
errx(1, "invalid suffix: \"%s\"", end);
return 0;
}
int parse_int(const char *str)
{
return parse_suffix(str, int_suffix, 0, INT_MAX);
}
ssize_t parse_size(const char *str)
{
return parse_suffix(str, size_suffix, 0, LONG_MAX);
}
off_t parse_offset(const char *str)
{
return parse_suffix(str, size_suffix, 0, LLONG_MAX);
}
long long parse_time(const char *str)
{
return parse_suffix(str, time_suffix, 0, LLONG_MAX);
}
void print_suffix(long long val, struct suffix *sfx)
{
int precision;
while (val < sfx->mul && sfx->mul > 1)
sfx++;
if (val % sfx->mul == 0)
precision = 0;
else if (val >= sfx->mul * 10)
precision = 1;
else
precision = 2;
printf("%.*f", precision, val * 1.0 / sfx->mul);
if (*sfx->txt)
printf(" %s", sfx->txt);
}
void print_int(long long val)
{
print_suffix(val, int_suffix);
}
void print_size(long long val)
{
print_suffix(val, size_suffix);
}
void print_time(long long val)
{
print_suffix(val, time_suffix);
}
char *path = NULL;
char *fstype = "";
char *device = "";
long long device_size = 0;
int target_fd = -1;
void *buf;
const char *notice = NULL;
int quiet = 0;
int time_info = 0;
int batch_mode = 0;
int direct = 0;
int cached = 0;
int rw_flags = 0;
int syncio = 0;
int data_syncio = 0;
int randomize = 1;
int write_test = 0;
int write_read_test = 0;
int ignore_error = 0;
unsigned long long random_entropy = 0;
long long period_request = 0;
long long period_time = 0;
int custom_interval, custom_deadline;
long long interval = NSEC_PER_SEC;
struct timespec interval_ts;
long long deadline = 0;
long long speed_limit = 0;
double rate_limit = 0;
long long min_valid_time = 0;
long long max_valid_time = LLONG_MAX;
ssize_t default_size = 1<<12;
ssize_t size = 0;
off_t wsize = 0;
off_t temp_wsize = 1<<20;
int keep_file = 0;
off_t offset = 0;
off_t woffset = 0;
long long request = 0;
long long warmup_request = 1;
long long burst = 0;
long long burst_request = 0;
long long stop_at_request = 0;
int json = 0;
int json_line = 0;
int exiting = 0;
const char *options = "hvkALRDNHCWGEYBqyi:t:T:w:s:S:c:o:p:P:l:r:a:I::Je:b:";
#ifdef HAVE_GETOPT_LONG_ONLY
static struct option long_options[] = {
{"help", no_argument, NULL, 'h'},
{"version", no_argument, NULL, 'v'},
{"keep", no_argument, NULL, 'k'},
{"quiet", no_argument, NULL, 'q'},
{"batch", no_argument, NULL, 'B'},
{"time", optional_argument, NULL, 'I'},
{"json", no_argument, NULL, 'J'},
{"rapid", no_argument, NULL, 'R'},
{"linear", no_argument, NULL, 'L'},
{"direct", no_argument, NULL, 'D'},
{"cached", no_argument, NULL, 'C'},
{"nowait", no_argument, NULL, 'N'},
{"hipri", no_argument, NULL, 'H'},
{"sync", no_argument, NULL, 'Y'},
{"dsync", no_argument, NULL, 'y'},
{"async", no_argument, NULL, 'A'},
{"write", no_argument, NULL, 'W'},
{"read-write", no_argument, NULL, 'G'},
{"ignore-error",no_argument, NULL, 'E'},
{"size", required_argument, NULL, 's'},
{"work-size", required_argument, NULL, 'S'},
{"work-offset", required_argument, NULL, 'o'},
{"count", required_argument, NULL, 'c'},
{"work-time", required_argument, NULL, 'w'},
{"interval", required_argument, NULL, 'i'},
{"burst", required_argument, NULL, 'b'},
{"speed-limit", required_argument, NULL, 'l'},
{"rate-limit", required_argument, NULL, 'r'},
{"warmup", required_argument, NULL, 'a'},
{"min-time", required_argument, NULL, 't'},
{"max-time", required_argument, NULL, 'T'},
{"print-count", required_argument, NULL, 'p'},
{"print-interval", required_argument, NULL, 'P'},
{"entropy", required_argument, NULL, 'e'},
{0, 0, NULL, 0},
};
#endif /* HAVE_GETOPT_LONG */
void usage(FILE *output)
{
fprintf(output,
" Usage: ioping [options...] directory|file|device\n"
" ioping -h | -v\n"
"\n"
" options:\n"
" -A, -async use asynchronous I/O\n"
" -C, -cached use cached I/O (no cache flush/drop)\n"
" -D, -direct use direct I/O (O_DIRECT)\n"
" -E -ignore-error continue after request failure\n"
" -G, -read-write read-write ping-pong mode\n"
" -L, -linear use sequential operations\n"
" -N, -nowait use nowait I/O (RWF_NOWAIT)\n"
" -H, -hipri use high priority I/O (RWF_HIPRI)\n"
" -W, -write use write I/O (please read manpage)\n"
" -Y, -sync use sync I/O (O_SYNC)\n"
" -y, -dsync use data sync I/O (O_DSYNC)\n"
" -R, -rapid test with rapid I/O during 3s (-q -i 0 -w 3)\n"
" -k, -keep keep and reuse temporary file (ioping.tmp)\n"
"\n"
" parameters:\n"
" -a, -warmup <count> ignore <count> first requests (1)\n"
" -b, -burst <count> make <count> requsts without delay (0)\n"
" -c, -count <count> stop after <count> requests\n"
" -e, -entropy <seed> seed for random number generator (0)\n"
" -i, -interval <time> interval between requests (1s)\n"
" -s, -size <size> request size (4k)\n"
" -S, -work-size <size> working set size (1m)\n"
" -o, -work-offset <size> working set offset (0)\n"
" -w, -work-time <time> stop after <time> passed\n"
" -l, -speed-limit <size> limit speed with <size> per second\n"
" -r, -rate-limit <count> limit rate with <count> per second\n"
" -t, -min-time <time> minimal valid request time (0us)\n"
" -T, -max-time <time> maximum valid request time\n"
"\n"
" output:\n"
" -B, -batch print final statistics in raw format\n"
" -I, -time [format] print current time for every request\n"
" -J, -json print output in JSON format\n"
" -p, -print-count <count> print statistics for every <count> requests\n"
" -P, -print-interval <time> print statistics for every <time>\n"
" -q, -quiet suppress human-readable output\n"
" -h, -help display this message and exit\n"
" -v, -version display version and exit\n"
"\n"
);
}
void parse_options(int argc, char **argv)
{
int opt;
if (argc < 2) {
usage(stdout);
exit(1);
}
while ((opt =
#ifdef HAVE_GETOPT_LONG_ONLY
getopt_long_only(argc, argv, options, long_options, NULL)
#else
getopt(argc, argv, options)
#endif
) != -1) {
switch (opt) {
case 'h':
usage(stdout);
exit(0);
case 'v':
version();
exit(0);
case 'L':
randomize = 0;
default_size = 1<<18;
break;
case 'e':
random_entropy = strtoull(optarg, NULL, 0);
break;
case 'l':
if (!custom_interval)
interval = 0;
speed_limit = parse_size(optarg);
break;
case 'r':
if (!custom_interval)
interval = 0;
rate_limit = parse_suffix(optarg, int_suffix, 0, NSEC_PER_SEC);
break;
case 'R':
if (!custom_interval)
interval = 0;
if (!custom_deadline)
deadline = 3 * NSEC_PER_SEC;
temp_wsize = 1<<26;
quiet = 1;
break;
case 'D':
direct = 1;
break;
case 'C':
cached = 1;
break;
case 'N':
rw_flags |= RWF_NOWAIT;
break;
case 'H':
rw_flags |= RWF_HIPRI;
break;
case 'A':
async = 1;
break;
case 'W':
write_test++;
break;
case 'G':
write_test++;
write_read_test = 1;
break;
case 'E':
ignore_error = 1;
break;
case 'Y':
syncio = 1;
break;
case 'y':
data_syncio = 1;
break;
case 'i':
interval = parse_time(optarg);
custom_interval = 1;
break;
case 't':
min_valid_time = parse_time(optarg);
break;
case 'T':
max_valid_time = parse_time(optarg);
break;
case 'w':
deadline = parse_time(optarg);
custom_deadline = 1;
break;
case 's':
size = parse_size(optarg);
break;
case 'S':
wsize = parse_offset(optarg);
break;
case 'o':
offset = parse_offset(optarg);
break;
case 'p':
period_request = parse_int(optarg);
break;
case 'P':
period_time = parse_time(optarg);
break;
case 'q':
quiet = 1;
break;
case 'B':
quiet = 1;
batch_mode = 1;
break;
case 'I':
time_info = 1;
if (optarg)
localtime_fmt = optarg;
break;
case 'J':
json = 1;
localtime_fmt = "%FT%T%z";
break;
case 'c':
stop_at_request = parse_int(optarg);
break;
case 'a':
warmup_request = parse_int(optarg);
break;
case 'b':
burst = parse_int(optarg);
break;
case 'k':
keep_file = 1;
break;
case '?':
fprintf(stderr, "\n");
usage(stderr);
exit(1);
}
}
if (optind > argc-1)
errx(1, "no destination specified");
if (optind < argc-1)
errx(1, "more than one destination specified");
path = argv[optind];
}
#ifdef __linux__
void parse_device(dev_t dev)
{
char *buf = NULL, *ptr;
unsigned major, minor;
struct statvfs vfs;
size_t len;
FILE *file;
char *real;
if (!fstatvfs(target_fd, &vfs))
device_size = (long long)vfs.f_frsize * vfs.f_blocks;
/* since v2.6.26 */
file = fopen("/proc/self/mountinfo", "r");
if (!file)
goto old;
while (getline(&buf, &len, file) > 0) {
sscanf(buf, "%*d %*d %u:%u", &major, &minor);
if (makedev(major, minor) != dev)
continue;
ptr = strstr(buf, " - ") + 3;
fstype = strdup(strsep(&ptr, " "));
device = strdup(strsep(&ptr, " "));
goto out;
}
old:
/* for older versions */
file = fopen("/proc/mounts", "r");
if (!file)
return;
while (getline(&buf, &len, file) > 0) {
struct stat st;
ptr = buf;
strsep(&ptr, " ");
if (*buf != '/' || stat(buf, &st) || st.st_rdev != dev)
continue;
strsep(&ptr, " ");
fstype = strdup(strsep(&ptr, " "));
device = strdup(buf);
goto out;
}
out:
free(buf);
fclose(file);
real = realpath(device, NULL);
if (real) {
free(device);
device = real;
}
}
#elif defined(__APPLE__) || defined(__OpenBSD__) \
|| defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
void parse_device(dev_t dev)
{
struct statfs fs;
(void)dev;
if (statfs(path, &fs))
return;
fstype = strdup(fs.f_fstypename);
device = strdup(fs.f_mntfromname);
device_size = (long long)fs.f_bsize * fs.f_blocks;
}
#elif defined(__MINGW32__)
void parse_device(dev_t dev)
{
HANDLE h = (HANDLE)_get_osfhandle(target_fd);
ULARGE_INTEGER total;
DWORD flags;
wchar_t wname[MAX_PATH + 1];
wchar_t wtype[MAX_PATH + 1];
(void)dev;
if (GetDiskFreeSpaceExA(path, NULL ,&total, NULL))
device_size = total.QuadPart;
if (GetVolumeInformationByHandleW(h, wname, MAX_PATH,
NULL, NULL, &flags,
wtype, MAX_PATH)) {
size_t len;
len = wcstombs(NULL, wname, 0) + 1;
device = malloc(len);
wcstombs(device, wname, len);
len = wcstombs(NULL, wtype, 0) + 1;
fstype = malloc(len);
wcstombs(fstype, wtype, len);
}
}
#else
void parse_device(dev_t dev)
{