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ntp: support per-source IP family restriction

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Add a new parameter to the NSR_AddSourceByName() function to allow
individual sources to be limited to IPv4 or IPv6 addresses. This doesn't
change the options passed to the resolver. It's just an additional
filter in the processing of resolved addresses following the -4/-6
command-line option of chronyd.
This commit is contained in:
Miroslav Lichvar
2024-02-05 14:06:52 +01:00
parent e11b518a1f
commit d7c2b1d2f3
6 changed files with 38 additions and 17 deletions
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9
ntp_sources.h
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@@ -55,9 +55,12 @@ extern NSR_Status NSR_AddSource(NTP_Remote_Address *remote_addr, NTP_Source_Type
/* Procedure to add a new server, peer source, or pool of servers specified by
name instead of address. The name is resolved in exponentially increasing
intervals until it succeeds or fails with a non-temporary error. If the
name is an address, it is equivalent to NSR_AddSource(). */
extern NSR_Status NSR_AddSourceByName(char *name, int port, int pool, NTP_Source_Type type,
intervals until it succeeds or fails with a non-temporary error. The
specified family filters resolved addresses. If the name is an address
and its family does not conflict with the specified family, it is equivalent
to NSR_AddSource(). */
extern NSR_Status NSR_AddSourceByName(char *name, int family, int port, int pool,
NTP_Source_Type type,
SourceParameters *params, uint32_t *conf_id);
extern const char *NSR_StatusToString(NSR_Status status);