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authorMole Shang <[email protected]>2024-02-14 20:46:23 +0800
committerMole Shang <[email protected]>2024-02-14 20:46:23 +0800
commitf98eeb30507040dc916b2a337818830954ee1d4a (patch)
treea741cb0bbd6be96d8084e72b4af895ac093a2b48 /kernel/sysinfo.c
parent0de5ac779602f562a038e5ad27163d85bc71638b (diff)
parent904885a96efd1dd0221585f67477f5a39bcce7f7 (diff)
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Merge branch 'net' into lock
Conflicts: .gitignore Makefile conf/lab.mk kernel/defs.h user/user.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;
+}
+