Editing Ubstat system call
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.
The edit can be undone.
Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision | Your text | ||
Line 25: | Line 25: | ||
The macros and data typed used are declared in <code>include/ub/ub_stat.h</code> file. | The macros and data typed used are declared in <code>include/ub/ub_stat.h</code> file. | ||
− | + | == Arguments description == | |
'''<code>func</code>''' is like <code>cmd</code> in the <code>ioctl</code> system call. It can be one of | '''<code>func</code>''' is like <code>cmd</code> in the <code>ioctl</code> system call. It can be one of | ||
Line 45: | Line 45: | ||
'''<code>size</code>''' is the <code>buf</code> memory size. | '''<code>size</code>''' is the <code>buf</code> memory size. | ||
− | + | == The statistics format == | |
− | The format of data | + | The format of data rerurned into the buffer depends on the function requested. |
'''1. <code>UBSTAT_READ_ONE</code>''' format is | '''1. <code>UBSTAT_READ_ONE</code>''' format is | ||
Line 143: | Line 143: | ||
=== Return value === | === Return value === | ||
− | The system call returns -1 in case error has occurred. In case of <code>UBSTAT_UBPARMNUM</code | + | The system call returns -1 in case error has occurred. In case of <code>UBSTAT_UBPARMNUM</code it returns <code>UB_RESOURCES</code> and in all other cases it returns the amount of bytes written to the <code>buf</code>. |
== Demo == | == Demo == |