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FileSystem: Port most of the code over to using custodies.

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The current working directory is now stored as a custody. Likewise for a
process executable file. This unbreaks /proc/PID/fd which has not been
working since we made the filesystem bigger.

This still needs a bunch of work, for instance when renaming or removing
a file somewhere, we have to update the relevant custody links.
This commit is contained in:
Andreas Kling 2019-05-30 18:58:59 +02:00
parent 4cb87b1753
commit 393851418b
11 changed files with 280 additions and 220 deletions
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34
Kernel/FileSystem/VirtualFileSystem.h
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@ -63,22 +63,22 @@ public:
bool mount(RetainPtr<FS>&&, StringView path);
KResultOr<Retained<FileDescriptor>> open(RetainPtr<Device>&&, int options);
KResultOr<Retained<FileDescriptor>> open(StringView path, int options, mode_t mode, Inode& base);
KResultOr<Retained<FileDescriptor>> create(StringView path, int options, mode_t mode, Inode& base);
KResult mkdir(StringView path, mode_t mode, Inode& base);
KResult link(StringView old_path, StringView new_path, Inode& base);
KResult unlink(StringView path, Inode& base);
KResult symlink(StringView target, StringView linkpath, Inode& base);
KResult rmdir(StringView path, Inode& base);
KResult chmod(StringView path, mode_t, Inode& base);
KResult chmod(Inode&, mode_t);
KResult chown(StringView path, uid_t, gid_t, Inode& base);
KResult access(StringView path, int mode, Inode& base);
KResult stat(StringView path, int options, Inode& base, struct stat&);
KResult utime(StringView path, Inode& base, time_t atime, time_t mtime);
KResult rename(StringView oldpath, StringView newpath, Inode& base);
KResult mknod(StringView path, mode_t, dev_t, Inode& base);
KResultOr<Retained<Inode>> open_directory(StringView path, Inode& base);
KResultOr<Retained<FileDescriptor>> open(StringView path, int options, mode_t mode, Custody& base);
KResultOr<Retained<FileDescriptor>> create(StringView path, int options, mode_t mode, Custody& base);
KResult mkdir(StringView path, mode_t mode, Custody& base);
KResult link(StringView old_path, StringView new_path, Custody& base);
KResult unlink(StringView path, Custody& base);
KResult symlink(StringView target, StringView linkpath, Custody& base);
KResult rmdir(StringView path, Custody& base);
KResult chmod(StringView path, mode_t, Custody& base);
KResult fchmod(Inode&, mode_t);
KResult chown(StringView path, uid_t, gid_t, Custody& base);
KResult access(StringView path, int mode, Custody& base);
KResult stat(StringView path, int options, Custody& base, struct stat&);
KResult utime(StringView path, Custody& base, time_t atime, time_t mtime);
KResult rename(StringView oldpath, StringView newpath, Custody& base);
KResult mknod(StringView path, mode_t, dev_t, Custody& base);
KResultOr<Retained<Custody>> open_directory(StringView path, Custody& base);
void register_device(Device&);
void unregister_device(Device&);
@ -98,7 +98,7 @@ public:
Device* get_device(unsigned major, unsigned minor);
Custody& root_custody();
KResultOr<Retained<Custody>> resolve_path_to_custody(StringView path, Custody& base, int options = 0);
KResultOr<Retained<Custody>> resolve_path_to_custody(StringView path, Custody& base, RetainPtr<Custody>* parent = nullptr, int options = 0);
private:
friend class FileDescriptor;