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socket: enable only specified IP families

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Allow an IP family to be specified in the socket initialization in order
to globally disable the other family. This replaces the ntp_io and
cmdmon code handling the -4/-6 options and fixes a case where the NTP
client could still use a disabled family if the source was specified
with an IP address.
This commit is contained in:
Miroslav Lichvar
2020-06-17 12:06:21 +02:00
parent 80316de3b8
commit 27e20a568b
12 changed files with 52 additions and 50 deletions
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9
socket.h
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@@ -73,14 +73,15 @@ typedef struct {
int descriptor;
} SCK_Message;
/* Initialisation function */
extern void SCK_Initialise(void);
/* Initialisation function (the specified IP family is enabled,
or all if IPADDR_UNSPEC) */
extern void SCK_Initialise(int family);
/* Finalisation function */
extern void SCK_Finalise(void);
/* Check if support for the IP family was enabled in the build */
extern int SCK_IsFamilySupported(int family);
/* Check if support for the IP family is enabled */
extern int SCK_IsIpFamilyEnabled(int family);
/* Get the 0.0.0.0/::0 or 127.0.0.1/::1 address */
extern void SCK_GetAnyLocalIPAddress(int family, IPAddr *local_addr);