netdev - Re: [PATCH iproute2] ifstat: handle unlink return value

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Date: Wed, 28 Feb 2024 16:51:33 -0800
From: Stephen Hemminger <stephen@...workplumber.org>
To: Denis Kirjanov <kirjanov@...il.com>
Cc: netdev@...r.kernel.org, Denis Kirjanov <dkirjanov@...e.de>
Subject: Re: [PATCH iproute2] ifstat: handle unlink return value

On Wed, 21 Feb 2024 07:04:24 -0500
Denis Kirjanov <kirjanov@...il.com> wrote:

> Print an error message if we can't remove the history file
> 
> Signed-off-by: Denis Kirjanov <dkirjanov@...e.de>
> ---

Good idea, but would like the output and result to look like
the other errors in ifstat about history file. Something like:

diff --git a/misc/ifstat.c b/misc/ifstat.c
index 767cedd4aa47..72901097e6c2 100644
--- a/misc/ifstat.c
+++ b/misc/ifstat.c
@@ -937,8 +937,10 @@ int main(int argc, char *argv[])
                                 "%s/.%s_ifstat.u%d", P_tmpdir, stats_type,
                                 getuid());
 
-       if (reset_history)
-               unlink(hist_name);
+       if (reset_history && unlink(hist_name) < 0) {
+               perror("ifstat: unlink history file");
+               exit(-1);
+       }
 
        if (!ignore_history || !no_update) {
                struct stat stb;