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| author | Mole Shang <[email protected]> | 2024-02-11 14:44:22 +0800 |
|---|---|---|
| committer | Mole Shang <[email protected]> | 2024-02-11 16:06:15 +0800 |
| commit | 2fe04bc8faa4bf737a86c36a8017473e84814f3b (patch) | |
| tree | 2146d3dae86f21060e2e807ad364f5a949fd1c53 /kernel/sysinfo.c | |
| parent | 5ce1f630132d8b7b35b9dc46b4a55f860eb85d5c (diff) | |
| parent | 48a5e34fcd07852b4a68825ce8e37feb6f6d04d7 (diff) | |
| download | xv6-labs-2fe04bc8faa4bf737a86c36a8017473e84814f3b.tar.gz xv6-labs-2fe04bc8faa4bf737a86c36a8017473e84814f3b.tar.bz2 xv6-labs-2fe04bc8faa4bf737a86c36a8017473e84814f3b.zip | |
Merge branch 'traps' into cow
Conflicts:
.gitignore
Makefile
conf/lab.mk
Diffstat (limited to 'kernel/sysinfo.c')
| -rw-r--r-- | kernel/sysinfo.c | 24 |
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; +} + |