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64 bit file I/O by default

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1040 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-08-03 21:14:23 +00:00
parent 11c0315f9b
commit d5249393ef
7 changed files with 32 additions and 28 deletions
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18
block.c
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@ -71,14 +71,22 @@ int bdrv_create(BlockDriver *drv,
return drv->bdrv_create(filename, size_in_sectors, backing_file, flags);
}
/* XXX: race condition possible */
#ifdef _WIN32
static void get_tmp_filename(char *filename, int size)
{
/* XXX: find a better function */
tmpnam(filename);
}
#else
static void get_tmp_filename(char *filename, int size)
{
int fd;
/* XXX: race condition possible */
pstrcpy(filename, size, "/tmp/vl.XXXXXX");
fd = mkstemp(filename);
close(fd);
}
#endif
static BlockDriver *find_image_format(const char *filename)
{
@ -514,7 +522,7 @@ static int raw_open(BlockDriverState *bs, const char *filename)
return -1;
bs->read_only = 1;
}
size = lseek64(fd, 0, SEEK_END);
size = lseek(fd, 0, SEEK_END);
bs->total_sectors = size / 512;
s->fd = fd;
return 0;
@ -526,7 +534,7 @@ static int raw_read(BlockDriverState *bs, int64_t sector_num,
BDRVRawState *s = bs->opaque;
int ret;
lseek64(s->fd, sector_num * 512, SEEK_SET);
lseek(s->fd, sector_num * 512, SEEK_SET);
ret = read(s->fd, buf, nb_sectors * 512);
if (ret != nb_sectors * 512)
return -1;
@ -539,7 +547,7 @@ static int raw_write(BlockDriverState *bs, int64_t sector_num,
BDRVRawState *s = bs->opaque;
int ret;
lseek64(s->fd, sector_num * 512, SEEK_SET);
lseek(s->fd, sector_num * 512, SEEK_SET);
ret = write(s->fd, buf, nb_sectors * 512);
if (ret != nb_sectors * 512)
return -1;
@ -564,7 +572,7 @@ static int raw_create(const char *filename, int64_t total_size,
0644);
if (fd < 0)
return -EIO;
ftruncate64(fd, total_size * 512);
ftruncate(fd, total_size * 512);
close(fd);
return 0;
}