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IPv4: Implement socket ioctls SIOCGIFADDR and SIOCSIFADDR

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This allows userspace programs to get and set (superuser-only) the IPv4
address of a network adapter. :^)
This commit is contained in:
Andreas Kling 2019-09-23 19:06:03 +02:00
parent a3575f3c60
commit 2482fc3538
7 changed files with 117 additions and 1 deletions
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30
Kernel/UnixTypes.h
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@ -406,3 +406,33 @@ struct iovec {
struct sched_param {
int sched_priority;
};
struct ifreq {
#define IFNAMSIZ 16
char ifr_name[IFNAMSIZ];
union {
struct sockaddr ifru_addr;
struct sockaddr ifru_dstaddr;
struct sockaddr ifru_broadaddr;
short ifru_flags;
int ifru_metric;
int64_t ifru_vnetid;
uint64_t ifru_media;
void* ifru_data;
unsigned int ifru_index;
} ifr_ifru;
#define ifr_addr ifr_ifru.ifru_addr // address
#define ifr_dstaddr ifr_ifru.ifru_dstaddr // other end of p-to-p link
#define ifr_broadaddr ifr_ifru.ifru_broadaddr // broadcast address
#define ifr_flags ifr_ifru.ifru_flags // flags
#define ifr_metric ifr_ifru.ifru_metric // metric
#define ifr_mtu ifr_ifru.ifru_metric // mtu (overload)
#define ifr_hardmtu ifr_ifru.ifru_metric // hardmtu (overload)
#define ifr_media ifr_ifru.ifru_media // media options
#define ifr_rdomainid ifr_ifru.ifru_metric // VRF instance (overload)
#define ifr_vnetid ifr_ifru.ifru_vnetid // Virtual Net Id
#define ifr_ttl ifr_ifru.ifru_metric // tunnel TTL (overload)
#define ifr_data ifr_ifru.ifru_data // for use by interface
#define ifr_index ifr_ifru.ifru_index // interface index
#define ifr_llprio ifr_ifru.ifru_metric // link layer priority
};