src/kernel --> src/

src/userland/sys/ping.c

@@ -0,0 +1,70 @@
+#include <stdlib.h>
+#include <syscall.h>
+
+static int parse_ip(const char* str, net_ipv4_address_t* ip) {
+    int val = 0;
+    int part = 0;
+    const char* p = str;
+    while (*p) {
+        if (*p >= '0' && *p <= '9') {
+            val = val * 10 + (*p - '0');
+            if (val > 255) return -1;
+        } else if (*p == '.') {
+            if (part > 3) return -1;
+            ip->bytes[part++] = (uint8_t)val;
+            val = 0;
+        } else {
+            return -1;
+        }
+        p++;
+    }
+    if (part != 3) return -1;
+    ip->bytes[3] = (uint8_t)val;
+    return 0;
+}
+
+static int resolve_host(const char* host, net_ipv4_address_t* ip) {
+    if (parse_ip(host, ip) == 0) return 0;
+    return sys_dns_lookup(host, ip);
+}
+
+int main(int argc, char **argv) {
+    if (argc < 2) {
+        printf("Usage: ping <host>\n");
+        return 1;
+    }
+    
+    if (!sys_network_is_initialized()) {
+        printf("Initializing network...\n");
+        sys_network_init();
+    }
+    
+    const char *host = argv[1];
+    net_ipv4_address_t ip;
+    
+    if (resolve_host(host, &ip) != 0) {
+        printf("Failed to resolve %s\n", host);
+        return 1;
+    }
+    
+    printf("Pinging %s (%d.%d.%d.%d)...\n", host, ip.bytes[0], ip.bytes[1], ip.bytes[2], ip.bytes[3]);
+    
+    int successful = 0;
+    for (int i = 0; i < 4; i++) {
+        int rtt = sys_icmp_ping(&ip);
+        if (rtt >= 0) {
+            printf("64 bytes from %d.%d.%d.%d: icmp_seq=%d time=%dms\n", 
+                   ip.bytes[0], ip.bytes[1], ip.bytes[2], ip.bytes[3], i + 1, rtt);
+            successful++;
+        } else {
+            printf("Request timeout for icmp_seq %d\n", i + 1);
+        }
+        // Small delay between pings
+        for(volatile int d=0; d<1000000; d++);
+    }
+    
+    printf("\n--- %s ping statistics ---\n", host);
+    printf("4 packets transmitted, %d received, %d%% packet loss\n", successful, (4-successful)*25);
+    
+    return successful > 0 ? 0 : 1;
+}