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Kernel: Add /proc/uptime file (number of seconds since boot.)

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Also added a simple /bin/uptime to pretty-print this information. :^)
This commit is contained in:
Andreas Kling 2019-04-14 15:19:45 +02:00
parent 0e30f4e412
commit c0fe48635b
5 changed files with 47 additions and 0 deletions
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9
Kernel/FileSystem/ProcFS.cpp
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@ -36,6 +36,7 @@ enum ProcFileType {
FI_Root_inodes,
FI_Root_dmesg,
FI_Root_pci,
FI_Root_uptime,
FI_Root_self, // symlink
FI_Root_sys, // directory
__FI_Root_End,
@ -248,6 +249,13 @@ ByteBuffer procfs$pci(InodeIdentifier)
return builder.to_byte_buffer();
}
ByteBuffer procfs$uptime(InodeIdentifier)
{
StringBuilder builder;
builder.appendf("%u\n", (dword)(g_uptime / 1000));
return builder.to_byte_buffer();
}
ByteBuffer procfs$pid_vmo(InodeIdentifier identifier)
{
auto handle = ProcessInspectionHandle::from_pid(to_pid(identifier));
@ -1144,6 +1152,7 @@ ProcFS::ProcFS()
m_entries[FI_Root_dmesg] = { "dmesg", FI_Root_dmesg, procfs$dmesg };
m_entries[FI_Root_self] = { "self", FI_Root_self, procfs$self };
m_entries[FI_Root_pci] = { "pci", FI_Root_pci, procfs$pci };
m_entries[FI_Root_uptime] = { "uptime", FI_Root_uptime, procfs$uptime };
m_entries[FI_Root_sys] = { "sys", FI_Root_sys };
m_entries[FI_PID_vm] = { "vm", FI_PID_vm, procfs$pid_vm };