[Minios-devel] [UNIKRAFT PATCH 1/1] Implement sethostname and uname

[Vlad-Andrei BĂDOIU (78692) <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>]

---
 lib/uksysinfo/exportsyms.uk |  1 +
 lib/uksysinfo/sysinfo.c     | 39 +++++++++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)

diff --git a/lib/uksysinfo/exportsyms.uk b/lib/uksysinfo/exportsyms.uk
index 2e35b6fa..73e1fe99 100644
--- a/lib/uksysinfo/exportsyms.uk
+++ b/lib/uksysinfo/exportsyms.uk
@@ -5,3 +5,4 @@ pathconf
 getpagesize
 uname
 gethostname
+sethostname
diff --git a/lib/uksysinfo/sysinfo.c b/lib/uksysinfo/sysinfo.c
index 15e097c4..b41b2f7b 100644
--- a/lib/uksysinfo/sysinfo.c
+++ b/lib/uksysinfo/sysinfo.c
@@ -39,6 +39,21 @@
 #include <string.h>
 #include <sys/utsname.h>
 #include <uk/essentials.h>
+#include <uk/config.h>
+
+static struct utsname utsname = {
+       .sysname        = "Unikraft",
+       .nodename       = "unikraft",
+       .release        = STRINGIFY(UK_CODENAME),
+       .version        = STRINGIFY(UK_FULLVERSION),
+#ifdef ARCH_X86_64
+       .machine        = "x86_64"
+#elif ARCH_ARM_64
+       .machine        = "arm64"
+#elif ARCH_ARM_32
+       .machine        = "arm32"
+#endif
+};
 
 long fpathconf(int fd __unused, int name __unused)
 {
@@ -70,6 +85,30 @@ int getpagesize(void)
 
 int uname(struct utsname *buf __unused)
 {
+       if (buf == NULL) {
+               errno = EFAULT;
+               return -1;
+       }
+
+       memcpy(buf, &utsname, sizeof(struct utsname));
+       return 0;
+}
+
+int sethostname(const char *name, size_t len)
+{
+       if (name == NULL) {
+               errno = EFAULT;
+               return -1;
+       }
+
+       if (len < 0 || len > sizeof(utsname.nodename)) {
+               errno = EINVAL;
+               return -1;
+       }
+
+       strncpy(utsname.nodename, name, len);
+       if (len < sizeof(utsname.nodename))
+               utsname.nodename[len] = 0;
        return 0;
 }
 
-- 
2.20.1


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