## Tasks #889

### librbd.cc : more int ->uint64_t

0%

**Description**

Hi ,

1.

commit : 4ee75a881ec637e2b0c5b74b16b1e44ac710707c

still exist some of params that need modify int ->uint64_t .

example : total_read ,total_write.

at read_iterate function, should modify

"int total_read = 0;"

to

"uint64_t total_read = 0;"

,or rbd export file size >2GB ,still fail.

i listed some of the functions at the below.

int read_iterate(ImageCtx *ictx, uint64_t off, size_t len,

int (*cb)(uint64_t, size_t, const char *, void *),

void *arg)
{

int r = ictx_check(ictx);

if (r < 0)

return r;
{

if (!len)

return 0;

`int r = ictx_check(ictx);`

if (r < 0)

return r;

int total_write = 0;

..............

int aio_read(ImageCtx *ictx, uint64_t off, size_t len,

char *buf,

AioCompletion *c)
{

..............

int total_read = 0;

...............

}

int write(ImageCtx *ictx, uint64_t off, size_t len, const char *buf)
{

if (!len)

return 0;

`int r = ictx_check(ictx);`

if (r < 0)

return r;

`int total_write = 0;`

..............................

}

2. to suggest, modify some of functions that "int" ->"int64_t"

example :

modify:

int read_iterate(ImageCtx *ictx, uint64_t off, size_t len,

int (*cb)(uint64_t, size_t, const char *, void *),

void *arg)

to

int64_t read_iterate(ImageCtx *ictx, uint64_t off, size_t len,

int (*cb)(uint64_t, size_t, const char *, void *),

void *arg)

read,write,aio_read,aio_write ,etc.

### History

#### #1 Updated by Sage Weil over 8 years ago

In both of these cases, we can read no more than the size_t len. In practical terms, we will never read more than what will fit in addressable memory. Is there any case where those ints could *actually* overflow? I guess we could switch them to unsigned to allow a 2GB read operation on 32bit...

#### #2 Updated by Sage Weil over 8 years ago

Oh, nevermind, I see why it matters (read_iterate can cover more data because it goes in pieces).

should be fixed by 174aa56c4bdf56454d54b8898f21204511ed6aaa

#### #3 Updated by Sage Weil over 8 years ago

**Status**changed from*New*to*Resolved*

#### #4 Updated by Sage Weil over 8 years ago

**Target version**set to*v0.25.2*