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Implement basic chmod() syscall and /bin/chmod helper.

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Only raw octal modes are supported right now.
This patch also changes mode_t from 32-bit to 16-bit to match the on-disk
type used by Ext2FS.

I also ran into EPERM being errno=0 which was confusing, so I inserted an
ESUCCESS in its place.
This commit is contained in:
Andreas Kling 2019-01-29 04:55:08 +01:00
parent ad53f6afd3
commit c30e2c8d44
22 changed files with 156 additions and 4 deletions
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2
Kernel/FileSystem.h
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@ -74,6 +74,7 @@ public:
bool is_symlink() const { return metadata().isSymbolicLink(); }
bool is_directory() const { return metadata().isDirectory(); }
bool is_character_device() const { return metadata().isCharacterDevice(); }
mode_t mode() const { return metadata().mode; }
InodeIdentifier identifier() const { return { fsid(), index() }; }
virtual InodeMetadata metadata() const = 0;
@ -89,6 +90,7 @@ public:
virtual bool remove_child(const String& name, int& error) = 0;
virtual RetainPtr<Inode> parent() const = 0;
virtual size_t directory_entry_count() const = 0;
virtual bool chmod(mode_t, int& error) = 0;
bool is_metadata_dirty() const { return m_metadata_dirty; }