Fix alignment and structure size for 32-bit systems

[darktemplarbasealt]

No description provided.

[darktemplarbasealt]

Without such changes on 32-bit system (Linux i686) I'm getting following error:

# sadf
Invalid system activity file: /var/log/sa/sa10

On closer inspection I've found out that activity record has size 0x14 (20 bytes) on 32bit system since sizeof(unsigned long) is usually 4 bytes:

https://github.com/sysstat/sysstat/blob/master/rd_stats.h#L719

Hardcoded size of buffer is { 1, 3, 0 }:

https://github.com/sysstat/sysstat/blob/master/activity.c#L1894

Size is checked here:

https://github.com/sysstat/sysstat/blob/master/sa_common.c#L2058

Result of check is fail, since MAP_SIZE(1, 3, 0) = 1 * 8 + 3 * 8 + 0 * 4 = 32, but size of structure is 1 * 8 + 3 * 4 = 20.

https://github.com/sysstat/sysstat/blob/master/rd_stats.h#L91

This change fixes this issue by adding alignment for unsigned long members of new structures in rd_stats.h

Tested on sysstat v12.5.1.

[sysstat]

Thanks for this bug report! I will apply your patch ASAP.
BTW would it be possible to send me such a datafile (/var/log/sa/saDD) created on a 32-bit system please? (send it to sysstat at orange.fr)