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Kernel: Add /proc/<n>/cwd 

Also update /proc/<n>/* permissions to match what linux does :D
This commit is contained in:
Bananymous 2025-11-18 04:14:09 +02:00
parent 812e70c626
commit fff5139d80
3 changed files with 15 additions and 4 deletions
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3
kernel/include/kernel/Process.h
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@ -233,7 +233,8 @@ namespace Kernel
size_t proc_meminfo(off_t offset, BAN::ByteSpan) const; size_t proc_meminfo(off_t offset, BAN::ByteSpan) const;
size_t proc_cmdline(off_t offset, BAN::ByteSpan) const; size_t proc_cmdline(off_t offset, BAN::ByteSpan) const;
size_t proc_environ(off_t offset, BAN::ByteSpan) const; size_t proc_environ(off_t offset, BAN::ByteSpan) const;
BAN::ErrorOr<BAN::String> proc_executable() const; BAN::ErrorOr<BAN::String> proc_cwd() const;
BAN::ErrorOr<BAN::String> proc_exe() const;
BAN::StringView executable() const { return m_executable; } BAN::StringView executable() const { return m_executable; }

6
kernel/kernel/FS/ProcFS/Inode.cpp
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@ -15,9 +15,10 @@ namespace Kernel
TRY(inode->link_inode(*inode, "."_sv)); TRY(inode->link_inode(*inode, "."_sv));
TRY(inode->link_inode(static_cast<TmpInode&>(*fs.root_inode()), ".."_sv)); TRY(inode->link_inode(static_cast<TmpInode&>(*fs.root_inode()), ".."_sv));
TRY(inode->link_inode(*MUST(ProcROProcessInode::create_new(process, &Process::proc_meminfo, fs, 0400)), "meminfo"_sv)); TRY(inode->link_inode(*MUST(ProcROProcessInode::create_new(process, &Process::proc_meminfo, fs, 0400)), "meminfo"_sv));
TRY(inode->link_inode(*MUST(ProcROProcessInode::create_new(process, &Process::proc_cmdline, fs, 0400)), "cmdline"_sv)); TRY(inode->link_inode(*MUST(ProcROProcessInode::create_new(process, &Process::proc_cmdline, fs, 0444)), "cmdline"_sv));
TRY(inode->link_inode(*MUST(ProcROProcessInode::create_new(process, &Process::proc_environ, fs, 0400)), "environ"_sv)); TRY(inode->link_inode(*MUST(ProcROProcessInode::create_new(process, &Process::proc_environ, fs, 0400)), "environ"_sv));
TRY(inode->link_inode(*MUST(ProcSymlinkProcessInode::create_new(process, &Process::proc_executable, fs, 0400)), "exe"_sv)); TRY(inode->link_inode(*MUST(ProcSymlinkProcessInode::create_new(process, &Process::proc_cwd, fs, 0777)), "cwd"_sv));
TRY(inode->link_inode(*MUST(ProcSymlinkProcessInode::create_new(process, &Process::proc_exe, fs, 0777)), "exe"_sv));
return inode; return inode;
} }
@ -33,6 +34,7 @@ namespace Kernel
(void)TmpDirectoryInode::unlink_impl("meminfo"_sv); (void)TmpDirectoryInode::unlink_impl("meminfo"_sv);
(void)TmpDirectoryInode::unlink_impl("cmdline"_sv); (void)TmpDirectoryInode::unlink_impl("cmdline"_sv);
(void)TmpDirectoryInode::unlink_impl("environ"_sv); (void)TmpDirectoryInode::unlink_impl("environ"_sv);
(void)TmpDirectoryInode::unlink_impl("cwd"_sv);
(void)TmpDirectoryInode::unlink_impl("exe"_sv); (void)TmpDirectoryInode::unlink_impl("exe"_sv);
} }

10
kernel/kernel/Process.cpp
View File

@ -508,7 +508,15 @@ namespace Kernel
return read_from_vec_of_str(m_environ, offset, buffer); return read_from_vec_of_str(m_environ, offset, buffer);
} }
BAN::ErrorOr<BAN::String> Process::proc_executable() const BAN::ErrorOr<BAN::String> Process::proc_cwd() const
{
LockGuard _(m_process_lock);
BAN::String result;
TRY(result.append(m_working_directory.canonical_path));
return result;
}
BAN::ErrorOr<BAN::String> Process::proc_exe() const
{ {
LockGuard _(m_process_lock); LockGuard _(m_process_lock);
BAN::String result; BAN::String result;