Changes between Version 5 and Version 6 of Dev/KernelHack/COINS/worklog/201110


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Timestamp:
Nov 2, 2011 12:29:43 PM (13 years ago)
Author:
mitty
Comment:

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  • Dev/KernelHack/COINS/worklog/201110

    v5 v6  
    14121412Oct 26 13:12:45 ubuntu-lucid64 kernel: [   45.645548] new_hello() syscall with 4 
    14131413}}} 
     1414 
     1415 = 10/28 = 
     1416 
     1417 * [http://www.bugbearr.jp/?C%E8%A8%80%E8%AA%9E%2F%E6%97%A5%E6%99%82 C言語/日時 - BugbearR's Wiki] 
     1418 * http://linuxjm.sourceforge.jp/html/LDP_man-pages/man2/clock_gettime.2.html 
     1419 * [http://d.hatena.ne.jp/pyopyopyo/20060711/p1 linuxで時刻を取得する方法 - ぴょぴょぴょ? - Linuxとかプログラミングの覚え書き -] 
     1420 
     1421 * [http://linux.die.net/man/2/intro intro(2): Introduction to system calls - Linux man page] 
     1422 > System calls are not required to return only positive or negative error codes. You need to read the source to be sure how it will return errors. Usually, it is the negative of a standard error code, e.g., -EPERM. The _syscall() macros will return the result r of the system call when r is non-negative, but will return -1 and set the variable errno to -r when r is negative.