Messages in this thread |  | | From | Joakim Tjernlund <> | Subject | Re: printk of non NULL terminated strings ? | Date | Thu, 9 Jul 2020 15:28:41 +0000 |
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On Thu, 2020-07-09 at 15:30 +0200, Rasmus Villemoes wrote: > On 09/07/2020 15.26, Joakim Tjernlund wrote: > > On Thu, 2020-07-09 at 14:56 +0200, Andreas Schwab wrote: > > > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. > > > > > > > > > On Jul 09 2020, Joakim Tjernlund wrote: > > > > > > > Is there a format (or other function) that lets me > > > > print strings without an \0 terminator using an explicit length arg instead? > > > > > > Use the precision. > > > > Looking at that now but have a hard time figuring how to use it, can you give me an example? > > Exactly as you'd do in userspace: > > printf("%.*s\n", len, buf) > > Of course, vsnprintf() will still stop if it encounters a nul byte > within those first len bytes in buf. And you need len to have type int, > so you may need a cast if you have a size_t or ssize_t or whatnot.
Thanks, this did the trick :)
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