Hi Jeremy, Jeremy Kerr wrote: > Since 2.6.6, we've had another type (10) option to the syslog syscall, > this change adds it to the syslog manpage. > > Signed-off-by: Jeremy Kerr <jk@xxxxxxxxxx> > > --- > > man2/syslog.2 | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) > > Index: man-pages-2.77/man2/syslog.2 > =================================================================== > --- man-pages-2.77.orig/man2/syslog.2 > +++ man-pages-2.77/man2/syslog.2 > @@ -66,19 +66,20 @@ Quoting from > * 7 \-\- Enable printk's to console > * 8 \-\- Set level of messages printed to console > * 9 \-\- Return number of unread characters in the log buffer > + * 10 \-\- Return size of the log buffer > */ > .fi > > -Only function 3 is allowed to non-root processes. > -(Function 9 was added in 2.4.10.) > +Only functions 3 and 10 are allowed to non-root processes. A nicely caught detail; confirmed. > +(Function 9 was added in 2.4.10, function 10 in 2.6.6) Version number confirmed. Thanks for attending to that detail. > .B The kernel log buffer > .br > The kernel has a cyclic buffer of length > .B LOG_BUF_LEN > (4096, since 1.3.54: 8192, since 2.1.113: 16384; in recent kernels > -the size can be set at compile time) in which messages given as argument > -to the kernel function > +the size can be queried with function 10) in which messages given as > +argument to the kernel function > .BR printk () > are stored > (regardless of their loglevel). Patch applied for man-pages-2.79. But it seems to me that the piece on LOG_BUF_LEN was somewhat out of date. I reworked it as the following (could you confirm these details?): === The kernel has a cyclic buffer of length .B LOG_BUF_LEN in which messages given as arguments to the kernel function .BR printk () are stored (regardless of their loglevel). In early kernels, .B LOG_BUF_LEN had the value 4096; from kernel 1.3.54, it was 8192; from kernel 2.1.113 it was 16384; since 2.4.23/2.6 the value is a kernel configuration option. .\" Under "General setup" ==> "Kernel log buffer size" In recent kernels the size can be queried with command type 10. === Cheers, Michael -- Michael Kerrisk Maintainer of the Linux man-pages project http://www.kernel.org/doc/man-pages/ Want to report a man-pages bug? Look here: http://www.kernel.org/doc/man-pages/reporting_bugs.html - To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
