handle /etc/hostname, sethostname(2), gethostname(2) and uname(2)

kernel-src/sys/syscalls/uname.c

@@ -0,0 +1,29 @@
+#include <kernel/syscalls.h>
+#include <build.h>
+
+typedef struct {
+	char sysname[65];
+	char nodename[65];
+	char release[65];
+	char version[65];
+	char machine[65];
+	char domainname[65];
+} utsname_t;
+
+void hostname_get(char *buf);
+
+syscallret_t syscall_uname(context_t *, utsname_t *utsname) {
+	syscallret_t ret = {0};
+
+	char hostname[HOST_NAME_MAX + 1];
+	hostname_get(hostname);
+
+	strcpy(utsname->sysname, "Astral");
+	strcpy(utsname->nodename, hostname);
+	strcpy(utsname->release, "Astral");
+	strcpy(utsname->version, BUILD_DATE);
+	strcpy(utsname->machine, BUILD_TARGET);
+	strcpy(utsname->domainname, hostname);
+
+	return ret;
+}