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authorMole Shang <[email protected]>2024-02-17 11:55:33 +0800
committerMole Shang <[email protected]>2024-02-17 12:22:07 +0800
commite8e0a7b4c97064eb5e9415726d7e38aaceccd3fd (patch)
treefb42ba5be7a8ae608b968266f62fd71fa889a89d /kernel/sysinfo.c
parenta6af72924b115c1177d18d9b1eaba56623e4248b (diff)
parentd85aec2689c4250d0384904bdc11aa618c726bec (diff)
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Merge branch 'thread' into fs
Conflicts: .gitignore Makefile conf/lab.mk kernel/param.h
Diffstat (limited to 'kernel/sysinfo.c')
-rw-r--r--kernel/sysinfo.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/kernel/sysinfo.c b/kernel/sysinfo.c
new file mode 100644
index 0000000..c66324d
--- /dev/null
+++ b/kernel/sysinfo.c
@@ -0,0 +1,24 @@
+#include "types.h"
+#include "riscv.h"
+#include "param.h"
+#include "spinlock.h"
+#include "defs.h"
+#include "sysinfo.h"
+#include "proc.h"
+
+// Get current system info
+// addr is a user virtual address, pointing to a struct sysinfo.
+int
+sys_info(uint64 addr) {
+ struct proc *p = myproc();
+ struct sysinfo info;
+
+ // Fill nums into the sysinfo struct
+ info.freemem = get_freemem();
+ info.nproc = get_nproc();
+
+ if(copyout(p->pagetable, addr, (char *)&info, sizeof(info)) < 0)
+ return -1;
+ return 0;
+}
+