On 08/02/17 14:36, Hans Petter Selasky wrote:
On 08/02/17 12:14, Konstantin Belousov wrote:
+#define major(x) ((int)((dev_t)(x) >> 32)) /* major number */
+#define minor(x) ((int)((x) & 0xffffffff)) /* minor number */
+#define makedev(x, y) (((dev_t)(x) << 32) | (y)) /* create
dev_t */
One more comment on this issue:
I think makedev(x, y) should be declared like this, to avoid issues when
"y" is negative:
#define makedev(x, y) (((dev_t)(x) << 32) | (unsigned int)(y))
/* create dev_t */
???
--HPS
And you'll probably want a final wrapping dev_t cast aswell. 128-bit
numbers are not yet there.
#define makedev(x, y) ((dev_t)(((dev_t)(x) << 32) | (unsigned
int)(y)))
> /* create dev_t */
--HPS
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