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Get a network interface address
#include <sys/types.h>
#include <sys/socket.h>
#include <ifaddrs.h>
int getifaddrs( struct ifaddrs ** ifap );
- ifap
- The address of a location where the function can store a pointer to a
linked list of ifaddrs structures that contain the data
related to the network interfaces on the local machine.
libsocket
Use the -l socket option to
qcc
to link against this library.
The getifaddrs() function stores a reference to a linked list of the network interfaces
on the local machine in the memory referenced by ifap.
The data returned by getifaddrs() is dynamically allocated;
you should free it by calling
freeifaddrs()
when you no longer need it.
- 0
- Success.
- -1
- An error occurred (errno is set).
The getifaddrs() function may fail and set
errno
for any of the errors specified by:
Unix
Safety: | |
Cancellation point |
Yes |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
errno,
freeifaddrs(),
ifaddrs,
ioctl(),
malloc(),
socket(),
sysctl()
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