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Kernel: Add a /proc/all process table dump.

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This will be useful for implementing some process-related utilities.
This commit is contained in:
Andreas Kling 2019-02-03 18:53:18 +01:00
parent dddd0e7b03
commit b51031bb54
5 changed files with 83 additions and 4 deletions
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31
Kernel/ProcFS.cpp
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@ -27,6 +27,7 @@ enum ProcFileType {
FI_Root_mm,
FI_Root_mounts,
FI_Root_kmalloc,
FI_Root_all,
FI_Root_summary,
FI_Root_cpuinfo,
FI_Root_inodes,
@ -216,7 +217,7 @@ ByteBuffer procfs$pid_vm(InodeIdentifier identifier)
region->laddr().get(),
region->laddr().offset(region->size() - 1).get(),
region->size(),
region->committed(),
region->amount_resident(),
region->name().characters());
}
return builder.to_byte_buffer();
@ -480,6 +481,33 @@ ByteBuffer procfs$summary(InodeIdentifier)
return builder.to_byte_buffer();
}
ByteBuffer procfs$all(InodeIdentifier)
{
InterruptDisabler disabler;
auto processes = Process::all_processes();
StringBuilder builder;
for (auto* process : processes) {
builder.appendf("%u,%u,%u,%u,%u,%u,%s,%u,%u,%u,%s,%s,%u,%u,%u\n",
process->pid(),
process->tty() ? process->tty()->pgid() : 0,
process->pgid(),
process->sid(),
process->uid(),
process->gid(),
to_string(process->state()),
process->ppid(),
process->times_scheduled(),
process->number_of_open_file_descriptors(),
process->tty() ? process->tty()->tty_name().characters() : "notty",
process->name().characters(),
process->amount_virtual(),
process->amount_resident(),
process->amount_shared()
);
}
return builder.to_byte_buffer();
}
ByteBuffer procfs$inodes(InodeIdentifier)
{
extern HashTable<Inode*>& all_inodes();
@ -970,6 +998,7 @@ ProcFS::ProcFS()
m_entries[FI_Root_mm] = { "mm", FI_Root_mm, procfs$mm };
m_entries[FI_Root_mounts] = { "mounts", FI_Root_mounts, procfs$mounts };
m_entries[FI_Root_kmalloc] = { "kmalloc", FI_Root_kmalloc, procfs$kmalloc };
m_entries[FI_Root_all] = { "all", FI_Root_all, procfs$all };
m_entries[FI_Root_summary] = { "summary", FI_Root_summary, procfs$summary };
m_entries[FI_Root_cpuinfo] = { "cpuinfo", FI_Root_summary, procfs$cpuinfo};
m_entries[FI_Root_inodes] = { "inodes", FI_Root_inodes, procfs$inodes };