At Wed, 30 May 2007 18:08:55 -0700 (PDT), Roland McGrath wrote: > > Aside from typos, I think it should be more clearly and strongly worded. > > "These should never be seen by user programs. To return one of these > codes, signal_pending() MUST be set. Note that ptrace can observe these at > syscall exit tracing, but they will never be left for the debugged user > process to see."
Thanks, is that better? Satoru --- Add comment for errnos related to restart syscall to avoid the leakage of them to user programs. Signed-off-by: Satoru Takeuchi <[EMAIL PROTECTED]> Cc: Oleg Nesterov <[EMAIL PROTECTED]> Cc: Roland McGrath <[EMAIL PROTECTED]> Index: linux-2.6.22-rc3/include/linux/errno.h =================================================================== --- linux-2.6.22-rc3.orig/include/linux/errno.h 2007-04-26 12:08:32.000000000 +0900 +++ linux-2.6.22-rc3/include/linux/errno.h 2007-05-31 10:47:40.000000000 +0900 @@ -5,7 +5,12 @@ #ifdef __KERNEL__ -/* Should never be seen by user programs */ +/* + * These should never be seen by user programs. To return one of ERESTART* + * codes, signal_pending() MUST be set. Note that ptrace can observe these + * at syscall exit tracing, but they will never be left for the debugged user + * process to see. + */ #define ERESTARTSYS 512 #define ERESTARTNOINTR 513 #define ERESTARTNOHAND 514 /* restart if no handler.. */ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
