On 05/09/2020 05.11, 罗勇刚(Yonggang Luo) wrote: > > > On Fri, Sep 4, 2020 at 9:07 PM Thomas Huth <th...@redhat.com > <mailto:th...@redhat.com>> wrote: > > On 04/09/2020 00.06, Yonggang Luo wrote: > > Signed-off-by: Yonggang Luo <luoyongg...@gmail.com > <mailto:luoyongg...@gmail.com>> > > --- > > tests/test-replication.c | 17 +++++++++++++---- > > 1 file changed, 13 insertions(+), 4 deletions(-) > > > > diff --git a/tests/test-replication.c b/tests/test-replication.c > > index 9ab3666a90..d0e06f8d77 100644 > > --- a/tests/test-replication.c > > +++ b/tests/test-replication.c > > @@ -23,14 +23,18 @@ > > > > /* primary */ > > #define P_ID "primary-id" > > -static char p_local_disk[] = "/tmp/p_local_disk.XXXXXX"; > > +#define P_LOCAL_DISK "%s/p_local_disk.XXXXXX" > > +static char p_local_disk[PATH_MAX]; > > > > /* secondary */ > > #define S_ID "secondary-id" > > #define S_LOCAL_DISK_ID "secondary-local-disk-id" > > -static char s_local_disk[] = "/tmp/s_local_disk.XXXXXX"; > > -static char s_active_disk[] = "/tmp/s_active_disk.XXXXXX"; > > -static char s_hidden_disk[] = "/tmp/s_hidden_disk.XXXXXX"; > > +#define S_LOCAL_DISK "%s/s_local_disk.XXXXXX" > > +static char s_local_disk[PATH_MAX]; > > +#define S_ACTIVE_DISK "%s/s_active_disk.XXXXXX" > > +static char s_active_disk[PATH_MAX]; > > +#define S_HIDDEN_DISK "%s/s_hidden_disk.XXXXXX" > > +static char s_hidden_disk[PATH_MAX]; > > > > /* FIXME: steal from blockdev.c */ > > QemuOptsList qemu_drive_opts = { > > @@ -571,7 +575,12 @@ static void setup_sigabrt_handler(void) > > int main(int argc, char **argv) > > { > > int ret; > > + const char *tmpdir = g_get_tmp_dir(); > > qemu_init_main_loop(&error_fatal); > > + sprintf(p_local_disk, P_LOCAL_DISK, tmpdir); > > + sprintf(s_local_disk, S_LOCAL_DISK, tmpdir); > > + sprintf(s_active_disk, S_ACTIVE_DISK, tmpdir); > > + sprintf(s_hidden_disk, S_HIDDEN_DISK, tmpdir); > > Sounds like the right way to go, but I think I'd do it without the > #defines and simply use the strings directly here, what do you think? > > I place them at the same place by define is for easily readable, if I > directly place at sprintf, then the code are harder to read
IMHO it's easier to read the code the other way round: For understanding the sprintf and its arguments, you have to know the format string, e.g. will the "tmpdir" be handled via "%s", or "%p" or maybe something completely different? If you then have to look up a macro first, it is a cumbersome indirection. #defines are certainly fine for things that are used multiple times, but here the strings are only used once, so the indirection is really not needed. Thomas
