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resolv: Move ns_name_skip to its own file and into libc (bug 28091)

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And reformat to GNU style.  Avoid out-of-bounds pointer arithmetic.
This also results in a fix of bug 28091 due to the additional packet
length checks.

The symbol was moved using scripts/move-symbol-to-libc.py.

Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
This commit is contained in:
Florian Weimer
2021-07-19 07:55:27 +02:00
parent 248dbed118
commit cff2c78c51
69 changed files with 143 additions and 70 deletions
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@ -26,6 +26,7 @@ libc {
}
GLIBC_2.9 {
ns_name_ntop;
ns_name_skip;
ns_name_unpack;
}
GLIBC_2.34 {
@ -36,6 +37,7 @@ libc {
getaddrinfo_a;
%endif
ns_name_ntop;
ns_name_skip;
ns_name_unpack;
}
GLIBC_PRIVATE {
@ -45,9 +47,10 @@ libc {
__h_errno;
__inet_aton_exact;
__inet_pton_length;
__res_iclose;
__ns_name_ntop;
__ns_name_skip;
__ns_name_unpack;
__res_iclose;
__resolv_context_get;
__resolv_context_get_override;
__resolv_context_get_preinit;