net.c: switch strncat(3) use to strlcat(3)

[ngie-eign]

strlcat(3), unlike its predecessor (strncat(3)), NUL terminates buffers
when the buffer length meets or exceeds the provided dstsize.

Leveraging strlcat(3) instead of strncat(3) squashes compiler warnings,
and ensures the buffer is properly NUL terminated in the pathological case.

This is an alternative approach to the solution suggested in #77.

[ngie-eign]

@ckujau: FYI.

[corecode]

but you copied strlcpy, not strlcat

…

On June 5, 2026 8:37:41 PM CDT, Enji Cooper ***@***.***> wrote: strlcat(3), unlike its predecessor (strncat(3)), NUL terminates buffers when the length are exceeded. Leveraging strlcat(3) instead squashes compiler warnings when the pathological case is hit with strncat(3) where the code (prior to this change) would not properly NUL terminate the buffer, leading to a potential buffer access problem. This is an alternative approach to the solution suggested in #77. You can view, comment on, or merge this pull request online at: #156 -- Commit Summary -- * Import strlcat(3) implementation from DragonFlyBSD * net.c: switch strncat(3) use to strlcat(3) -- File Changes -- M bsd/dma/Makefile (2) M dfcompat.c (56) M net.c (2) -- Patch Links -- https://github.com/corecode/dma/pull/156.patch https://github.com/corecode/dma/pull/156.diff -- Reply to this email directly or view it on GitHub: #156 You are receiving this because you are subscribed to this thread. Message ID: ***@***.***>

[ngie-eign]

but you copied strlcpy, not strlcat
…
On June 5, 2026 8:37:41 PM CDT, Enji Cooper @.> wrote: strlcat(3), unlike its predecessor (strncat(3)), NUL terminates buffers when the length are exceeded. Leveraging strlcat(3) instead squashes compiler warnings when the pathological case is hit with strncat(3) where the code (prior to this change) would not properly NUL terminate the buffer, leading to a potential buffer access problem. This is an alternative approach to the solution suggested in #77. You can view, comment on, or merge this pull request online at: #156 -- Commit Summary -- * Import strlcat(3) implementation from DragonFlyBSD * net.c: switch strncat(3) use to strlcat(3) -- File Changes -- M bsd/dma/Makefile (2) M dfcompat.c (56) M net.c (2) -- Patch Links -- https://github.com/corecode/dma/pull/156.patch https://github.com/corecode/dma/pull/156.diff -- Reply to this email directly or view it on GitHub: #156 You are receiving this because you are subscribed to this thread. Message ID: @.>

JFC. I’ll fix that when I get back home.