/*
* QEMU System Emulator block driver
- *
+ *
* Copyright (c) 2003 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
int64_t sector_num, const uint8_t *buf, int nb_sectors,
BlockDriverCompletionFunc *cb, void *opaque);
static void bdrv_aio_cancel_em(BlockDriverAIOCB *acb);
-static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num,
+static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num,
uint8_t *buf, int nb_sectors);
static int bdrv_write_em(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors);
return NULL;
}
-int bdrv_create(BlockDriver *drv,
+int bdrv_create(BlockDriver *drv,
const char *filename, int64_t size_in_sectors,
const char *backing_file, int flags)
{
void get_tmp_filename(char *filename, int size)
{
char temp_dir[MAX_PATH];
-
+
GetTempPath(MAX_PATH, temp_dir);
GetTempFileName(temp_dir, "qem", 0, filename);
}
(filename[0] >= 'A' && filename[0] <= 'Z')) &&
filename[1] == ':');
}
-
+
static int is_windows_drive(const char *filename)
{
- if (is_windows_drive_prefix(filename) &&
+ if (is_windows_drive_prefix(filename) &&
filename[2] == '\0')
return 1;
if (strstart(filename, "\\\\.\\", NULL) ||
memcpy(protocol, filename, len);
protocol[len] = '\0';
for(drv1 = first_drv; drv1 != NULL; drv1 = drv1->next) {
- if (drv1->protocol_name &&
+ if (drv1->protocol_name &&
!strcmp(drv1->protocol_name, protocol))
return drv1;
}
BlockDriver *drv1, *drv;
uint8_t buf[2048];
BlockDriverState *bs;
-
+
/* detect host devices. By convention, /dev/cdrom[N] is always
recognized as a host CDROM */
if (strstart(filename, "/dev/cdrom", NULL))
#else
{
struct stat st;
- if (stat(filename, &st) >= 0 &&
+ if (stat(filename, &st) >= 0 &&
(S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
return &bdrv_host_device;
}
}
#endif
-
+
drv = find_protocol(filename);
/* no need to test disk image formats for vvfat */
if (drv == &bdrv_vvfat)
int ret, open_flags;
char tmp_filename[PATH_MAX];
char backing_filename[PATH_MAX];
-
+
bs->read_only = 0;
bs->is_temporary = 0;
bs->encrypted = 0;
if (flags & BDRV_O_SNAPSHOT) {
BlockDriverState *bs1;
int64_t total_size;
-
+
/* if snapshot, we create a temporary backing file and open it
instead of opening 'filename' directly */
}
total_size = bdrv_getlength(bs1) >> SECTOR_BITS;
bdrv_delete(bs1);
-
+
get_tmp_filename(tmp_filename, sizeof(tmp_filename));
realpath(filename, backing_filename);
- if (bdrv_create(&bdrv_qcow2, tmp_filename,
+ if (bdrv_create(&bdrv_qcow2, tmp_filename,
total_size, backing_filename, 0) < 0) {
return -1;
}
}
/* return < 0 if error. See bdrv_write() for the return codes */
-int bdrv_read(BlockDriverState *bs, int64_t sector_num,
+int bdrv_read(BlockDriverState *bs, int64_t sector_num,
uint8_t *buf, int nb_sectors)
{
BlockDriver *drv = bs->drv;
}
}
-/* Return < 0 if error. Important errors are:
+/* Return < 0 if error. Important errors are:
-EIO generic I/O error (may happen for all errors)
-ENOMEDIUM No media inserted.
-EINVAL Invalid sector number or nb_sectors
-EACCES Trying to write a read-only device
*/
-int bdrv_write(BlockDriverState *bs, int64_t sector_num,
+int bdrv_write(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors)
{
BlockDriver *drv = bs->drv;
if (bs->read_only)
return -EACCES;
if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) {
- memcpy(bs->boot_sector_data, buf, 512);
+ memcpy(bs->boot_sector_data, buf, 512);
}
if (drv->bdrv_pwrite) {
int ret, len;
}
}
-static int bdrv_pread_em(BlockDriverState *bs, int64_t offset,
+static int bdrv_pread_em(BlockDriverState *bs, int64_t offset,
uint8_t *buf, int count1)
{
uint8_t tmp_buf[SECTOR_SIZE];
return count1;
}
-static int bdrv_pwrite_em(BlockDriverState *bs, int64_t offset,
+static int bdrv_pwrite_em(BlockDriverState *bs, int64_t offset,
const uint8_t *buf, int count1)
{
uint8_t tmp_buf[SECTOR_SIZE];
}
/**
- * Read with byte offsets (needed only for file protocols)
+ * Read with byte offsets (needed only for file protocols)
*/
-int bdrv_pread(BlockDriverState *bs, int64_t offset,
+int bdrv_pread(BlockDriverState *bs, int64_t offset,
void *buf1, int count1)
{
BlockDriver *drv = bs->drv;
return drv->bdrv_pread(bs, offset, buf1, count1);
}
-/**
- * Write with byte offsets (needed only for file protocols)
+/**
+ * Write with byte offsets (needed only for file protocols)
*/
-int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
+int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
const void *buf1, int count1)
{
BlockDriver *drv = bs->drv;
memset(bs->boot_sector_data + size, 0, 512 - size);
}
-void bdrv_set_geometry_hint(BlockDriverState *bs,
+void bdrv_set_geometry_hint(BlockDriverState *bs,
int cyls, int heads, int secs)
{
bs->cyls = cyls;
bs->translation = translation;
}
-void bdrv_get_geometry_hint(BlockDriverState *bs,
+void bdrv_get_geometry_hint(BlockDriverState *bs,
int *pcyls, int *pheads, int *psecs)
{
*pcyls = bs->cyls;
}
/* XXX: no longer used */
-void bdrv_set_change_cb(BlockDriverState *bs,
+void bdrv_set_change_cb(BlockDriverState *bs,
void (*change_cb)(void *opaque), void *opaque)
{
bs->change_cb = change_cb;
}
}
-void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
+void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
void *opaque)
{
BlockDriver *drv;
}
}
-void bdrv_get_backing_filename(BlockDriverState *bs,
+void bdrv_get_backing_filename(BlockDriverState *bs,
char *filename, int filename_size)
{
if (!bs->backing_hd) {
}
}
-int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
+int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors)
{
BlockDriver *drv = bs->drv;
return -ENOTSUP;
return drv->bdrv_write_compressed(bs, sector_num, buf, nb_sectors);
}
-
+
int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
{
BlockDriver *drv = bs->drv;
/**************************************************************/
/* handling of snapshots */
-int bdrv_snapshot_create(BlockDriverState *bs,
+int bdrv_snapshot_create(BlockDriverState *bs,
QEMUSnapshotInfo *sn_info)
{
BlockDriver *drv = bs->drv;
return drv->bdrv_snapshot_create(bs, sn_info);
}
-int bdrv_snapshot_goto(BlockDriverState *bs,
+int bdrv_snapshot_goto(BlockDriverState *bs,
const char *snapshot_id)
{
BlockDriver *drv = bs->drv;
return drv->bdrv_snapshot_delete(bs, snapshot_id);
}
-int bdrv_snapshot_list(BlockDriverState *bs,
+int bdrv_snapshot_list(BlockDriverState *bs,
QEMUSnapshotInfo **psn_info)
{
BlockDriver *drv = bs->drv;
base = 1024;
for(i = 0; i < NB_SUFFIXES; i++) {
if (size < (10 * base)) {
- snprintf(buf, buf_size, "%0.1f%c",
+ snprintf(buf, buf_size, "%0.1f%c",
(double)size / base,
suffixes[i]);
break;
} else if (size < (1000 * base) || i == (NB_SUFFIXES - 1)) {
- snprintf(buf, buf_size, "%" PRId64 "%c",
+ snprintf(buf, buf_size, "%" PRId64 "%c",
((size + (base >> 1)) / base),
suffixes[i]);
break;
int64_t secs;
if (!sn) {
- snprintf(buf, buf_size,
- "%-10s%-20s%7s%20s%15s",
+ snprintf(buf, buf_size,
+ "%-10s%-20s%7s%20s%15s",
"ID", "TAG", "VM SIZE", "DATE", "VM CLOCK");
} else {
ti = sn->date_sec;
"%02d:%02d:%02d.%03d",
(int)(secs / 3600),
(int)((secs / 60) % 60),
- (int)(secs % 60),
+ (int)(secs % 60),
(int)((sn->vm_clock_nsec / 1000000) % 1000));
snprintf(buf, buf_size,
- "%-10s%-20s%7s%20s%15s",
+ "%-10s%-20s%7s%20s%15s",
sn->id_str, sn->name,
get_human_readable_size(buf1, sizeof(buf1), sn->vm_state_size),
date_buf,
if (!drv)
return NULL;
-
+
/* XXX: we assume that nb_sectors == 0 is suppored by the async read */
if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) {
memcpy(buf, bs->boot_sector_data, 512);
if (bs->read_only)
return NULL;
if (sector_num == 0 && bs->boot_sector_enabled && nb_sectors > 0) {
- memcpy(bs->boot_sector_data, buf, 512);
+ memcpy(bs->boot_sector_data, buf, 512);
}
return drv->bdrv_aio_write(bs, sector_num, buf, nb_sectors, cb, opaque);
#define NOT_DONE 0x7fffffff
-static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num,
+static int bdrv_read_em(BlockDriverState *bs, int64_t sector_num,
uint8_t *buf, int nb_sectors)
{
int async_ret;
async_ret = NOT_DONE;
qemu_aio_wait_start();
- acb = bdrv_aio_read(bs, sector_num, buf, nb_sectors,
+ acb = bdrv_aio_read(bs, sector_num, buf, nb_sectors,
bdrv_rw_em_cb, &async_ret);
if (acb == NULL) {
qemu_aio_wait_end();
async_ret = NOT_DONE;
qemu_aio_wait_start();
- acb = bdrv_aio_write(bs, sector_num, buf, nb_sectors,
+ acb = bdrv_aio_write(bs, sector_num, buf, nb_sectors,
bdrv_rw_em_cb, &async_ret);
if (acb == NULL) {
qemu_aio_wait_end();
/**
* Return TRUE if the media changed since the last call to this
- * function. It is currently only used for floppy disks
+ * function. It is currently only used for floppy disks
*/
int bdrv_media_changed(BlockDriverState *bs)
{
projects / qemu / blobdiff