| Message ID | 1395844634-11729-3-git-send-email-alex.bennee@linaro.org |
|---|---|
| State | New |
| Headers | show |
On Wed, Mar 26, 2014 at 02:37:12PM +0000, alex.bennee@linaro.org wrote: > From: Alex Bennée <alex.bennee@linaro.org> > > When debugging stuff that occurs over several forks it would be useful > not to keep overwriting the one logfile you've set-up. This allows a > simple %d to be included once in the logfile parameter which is > substituted with getpid(). > > Signed-off-by: Alex Bennée <alex.bennee@linaro.org> > > diff --git a/qemu-log.c b/qemu-log.c > index 35bbb56..2897596 100644 > --- a/qemu-log.c > +++ b/qemu-log.c > @@ -81,11 +81,24 @@ void do_qemu_set_log(int log_flags, bool use_own_buffers) > qemu_log_close(); > } > } > - > +/* > + * Allow the user to include %d in their logfile which will be > + * substituted with the current PID. This is useful for debugging many > + * nested linux-user tasks but will result in lots of logs. > + */ > void qemu_set_log_filename(const char *filename) > { > g_free(logfilename); > - logfilename = g_strdup(filename); > + if (g_strrstr(filename, "%d")) { > + /* if we are going to format this we'd better validate first */ > + if (g_regex_match_simple("^[^%]+%d[^%]+$", filename, 0, 0)) { > + logfilename = g_strdup_printf(filename, getpid()); > + } else { > + g_error("Bad logfile format: %s", filename); > + } > + } else { > + logfilename = g_strdup(filename); > + } > qemu_log_close(); > qemu_set_log(qemu_loglevel); > } Looks good to me.
Leandro Dorileo <l@dorileo.org> writes: > On Wed, Mar 26, 2014 at 02:37:12PM +0000, alex.bennee@linaro.org wrote: >> From: Alex Bennée <alex.bennee@linaro.org> >> >> When debugging stuff that occurs over several forks it would be useful >> not to keep overwriting the one logfile you've set-up. This allows a >> simple %d to be included once in the logfile parameter which is >> substituted with getpid(). <snip> > > Looks good to me. Is that a Reviewed-by? If you include a Reviewed-by tag it makes it easier to copy and paste into the commit for the next iteration.
On Thu, Mar 27, 2014 at 09:59:21AM +0000, Alex Bennée wrote: > > Leandro Dorileo <l@dorileo.org> writes: > > > On Wed, Mar 26, 2014 at 02:37:12PM +0000, alex.bennee@linaro.org wrote: > >> From: Alex Bennée <alex.bennee@linaro.org> > >> > >> When debugging stuff that occurs over several forks it would be useful > >> not to keep overwriting the one logfile you've set-up. This allows a > >> simple %d to be included once in the logfile parameter which is > >> substituted with getpid(). > <snip> > > > > Looks good to me. > > Is that a Reviewed-by? If you include a Reviewed-by tag it makes it > easier to copy and paste into the commit for the next iteration. Sure, you can add Reviewed-by: Leandro Dorileo <l@dorileo.org>
diff --git a/qemu-log.c b/qemu-log.c index 35bbb56..2897596 100644 --- a/qemu-log.c +++ b/qemu-log.c @@ -81,11 +81,24 @@ void do_qemu_set_log(int log_flags, bool use_own_buffers) qemu_log_close(); } } - +/* + * Allow the user to include %d in their logfile which will be + * substituted with the current PID. This is useful for debugging many + * nested linux-user tasks but will result in lots of logs. + */ void qemu_set_log_filename(const char *filename) { g_free(logfilename); - logfilename = g_strdup(filename); + if (g_strrstr(filename, "%d")) { + /* if we are going to format this we'd better validate first */ + if (g_regex_match_simple("^[^%]+%d[^%]+$", filename, 0, 0)) { + logfilename = g_strdup_printf(filename, getpid()); + } else { + g_error("Bad logfile format: %s", filename); + } + } else { + logfilename = g_strdup(filename); + } qemu_log_close(); qemu_set_log(qemu_loglevel); }