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authorMole Shang <[email protected]>2024-02-16 10:20:27 +0800
committerMole Shang <[email protected]>2024-02-16 10:20:27 +0800
commita98c56a811142e5ede3332a7a444cca45f628769 (patch)
treec93ff7090da7b6ef911932be283818c2f6a03784 /kernel/sysinfo.c
parent0d65be5d1d880afafbf08c2adb605cf9f72216e2 (diff)
parent99015f3a985b2fd051606636743a2a2969b216e8 (diff)
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Merge branch 'lock' into thread
Conflicts: .gitignore Makefile conf/lab.mk
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;
+}
+