[OpenWrt-Devel] [PATCH] odhcpd: fix compilation with musl 1.2.0

Hans Dedecker dedeckeh at gmail.com
Sat Mar 28 04:23:57 EDT 2020


Hi,

On Fri, Mar 27, 2020 at 12:07 AM Rosen Penev <rosenp at gmail.com> wrote:
>
> SYS_clock_gettime is gone with musl 1.2.0. Switched to the function.
>
> Also fixed two format strings that fail as time_t is 64-bit with 1.2.0.
>
> Signed-off-by: Rosen Penev <rosenp at gmail.com>
> ---
>  src/dhcpv6-ia.c | 8 ++++----
>  src/odhcpd.c    | 2 +-
>  2 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c
> index 1a13945..9f5c77e 100644
> --- a/src/dhcpv6-ia.c
> +++ b/src/dhcpv6-ia.c
> @@ -338,12 +338,12 @@ void dhcpv6_ia_write_statefile(void)
>                                         odhcpd_hexlify(duidbuf, ctxt.c->clid_data, ctxt.c->clid_len);
>
>                                         /* iface DUID iaid hostname lifetime assigned length [addrs...] */
> -                                       ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s %x %s%s %ld %x %u ",
> +                                       ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s %x %s%s " PRId64 " %x %u ",
>                                                                 ctxt.iface->ifname, duidbuf, ntohl(ctxt.c->iaid),
>                                                                 (ctxt.c->flags & OAF_BROKEN_HOSTNAME) ? "broken\\x20" : "",
>                                                                 (ctxt.c->hostname ? ctxt.c->hostname : "-"),
>                                                                 (ctxt.c->valid_until > now ?
> -                                                                       (ctxt.c->valid_until - now + wall_time) :
> +                                                                       (int64_t)(ctxt.c->valid_until - now + wall_time) :
>                                                                         (INFINITE_VALID(ctxt.c->valid_until) ? -1 : 0)),
>                                                                 ctxt.c->assigned, (unsigned)ctxt.c->length);
This fails for me :
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:
In function 'dhcpv6_ia_write_statefile':
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:341:54:
error: format '%x' expects argument of type 'unsigned int', but
argument 9 has type 'long long int' [-Werror=format=]
      ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s %x %s%s
" PRId64 " %x %u ",
                                                      ^~~~~~~~~~~~~~~~~~
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:345:9:
         (ctxt.c->valid_until > now ?
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          (int64_t)(ctxt.c->valid_until - now + wall_time) :
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          (INFINITE_VALID(ctxt.c->valid_until) ? -1 : 0)),
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:341:83:
note: format string is defined here
      ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s %x %s%s
" PRId64 " %x %u ",

           ~^

           %llx
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:341:54:
error: too many arguments for format [-Werror=format-extra-args]
      ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s %x %s%s
" PRId64 " %x %u ",

>
> @@ -368,12 +368,12 @@ void dhcpv6_ia_write_statefile(void)
>                                         odhcpd_hexlify(duidbuf, c->hwaddr, sizeof(c->hwaddr));
>
>                                         /* iface DUID iaid hostname lifetime assigned length [addrs...] */
> -                                       ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s ipv4 %s%s %ld %x 32 ",
> +                                       ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s ipv4 %s%s " PRId64 " %x 32 ",
>                                                                 ctxt.iface->ifname, duidbuf,
>                                                                 (c->flags & OAF_BROKEN_HOSTNAME) ? "broken\\x20" : "",
>                                                                 (c->hostname ? c->hostname : "-"),
>                                                                 (c->valid_until > now ?
> -                                                                       (c->valid_until - now + wall_time) :
> +                                                                       (int64_t)(c->valid_until - now + wall_time) :
Same here :

/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:371:54:
error: format '%x' expects argument of type 'unsigned int', but
argument 8 has type 'long long int' [-Werror=format=]
      ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s ipv4
%s%s " PRId64 " %x 32 ",
                                                      ^~~~~~~~~~~~~~~~~~~~
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:375:9:
         (c->valid_until > now ?
         ~~~~~~~~~~~~~~~~~~~~~~~
          (int64_t)(c->valid_until - now + wall_time) :
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
          (INFINITE_VALID(c->valid_until) ? -1 : 0)),
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:371:85:
note: format string is defined here
      ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s ipv4
%s%s " PRId64 " %x 32 ",

             ~^

             %llx
/home/dedeckeh/OpenWrt_staging/build_dir/target-arm_cortex-a15+neon-vfpv4_musl_eabi/odhcpd-full/odhcpd-2020-03-14-6594c6b1/src/dhcpv6-ia.c:371:54:
error: too many arguments for format [-Werror=format-extra-args]
      ctxt.buf_idx = snprintf(ctxt.buf, ctxt.buf_len, "# %s %s ipv4
%s%s " PRId64 " %x 32 ",
                                                      ^~~~~~~~~~~~~~~~~~~~

Has this been compile tested ?

Hans
>                                                                         (INFINITE_VALID(c->valid_until) ? -1 : 0)),
>                                                                 ntohl(c->addr));
>
> diff --git a/src/odhcpd.c b/src/odhcpd.c
> index 4b8e589..26094b1 100644
> --- a/src/odhcpd.c
> +++ b/src/odhcpd.c
> @@ -440,7 +440,7 @@ int odhcpd_urandom(void *data, size_t len)
>  time_t odhcpd_time(void)
>  {
>         struct timespec ts;
> -       syscall(SYS_clock_gettime, CLOCK_MONOTONIC, &ts);
> +       clock_gettime(CLOCK_MONOTONIC, &ts);
>         return ts.tv_sec;
>  }
>
> --
> 2.25.1
>
>
> _______________________________________________
> openwrt-devel mailing list
> openwrt-devel at lists.openwrt.org
> https://lists.openwrt.org/mailman/listinfo/openwrt-devel

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