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util: introduce bus_message_read_ifindex()

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This commit is contained in:
Yu Watanabe 2020-07-19 12:07:27 +09:00
parent 10d4620467
commit 3dd95ab6c5
2 changed files with 21 additions and 0 deletions
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20
src/shared/bus-message-util.c
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@ -4,6 +4,26 @@
#include "resolve-util.h"
int bus_message_read_ifindex(sd_bus_message *message, sd_bus_error *error, int *ret) {
int ifindex, r;
assert(message);
assert(ret);
assert_cc(sizeof(int) == sizeof(int32_t));
r = sd_bus_message_read(message, "i", &ifindex);
if (r < 0)
return r;
if (ifindex <= 0)
return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid interface index");
*ret = ifindex;
return 0;
}
int bus_message_read_family(sd_bus_message *message, sd_bus_error *error, int *ret) {
int family, r;

1
src/shared/bus-message-util.h
View file

@ -6,6 +6,7 @@
#include "in-addr-util.h"
#include "socket-netlink.h"
int bus_message_read_ifindex(sd_bus_message *message, sd_bus_error *error, int *ret);
int bus_message_read_family(sd_bus_message *message, sd_bus_error *error, int *ret);
int bus_message_read_in_addr_auto(sd_bus_message *message, sd_bus_error *error, int *ret_family, union in_addr_union *ret_addr);