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https://gitlab.com/sortix/sortix.git
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bc928e99a4
This cleans up constructors so fields are initialized in the same order they are declared in. This makes it trivial to spot accidentally uninitialized fields. This fixes a minor argument parsing bug when the mount path isn't set, but fortunately argv[argc] is NULL and we wanted to set it to NULL anyway. This prevents excessively large block sizes from being used. This improves inode value range checks in the fsmarshall code. Inode 0 is not a valid inode. The new code for this is also simpler. This prevents creating links with names larger than 255 bytes. This adds a check to ensure inodes don't overflow the hardlink count. This ensures the dirent filetype is only set if supported.
91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014, 2015.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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inode.h
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Filesystem inode.
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*******************************************************************************/
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#ifndef INODE_H
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#define INODE_H
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class Block;
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class Filesystem;
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class Inode
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{
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public:
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Inode(Filesystem* filesystem, uint32_t inode_id);
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~Inode();
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public:
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Inode* prev_inode;
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Inode* next_inode;
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Inode* prev_hashed;
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Inode* next_hashed;
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Inode* prev_dirty;
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Inode* next_dirty;
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Block* data_block;
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struct ext_inode* data;
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Filesystem* filesystem;
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size_t reference_count;
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size_t remote_reference_count;
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uint32_t inode_id;
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bool dirty;
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public:
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uint32_t Mode();
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uint32_t UserId();
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uint32_t GroupId();
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uint64_t Size();
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void SetMode(uint32_t mode);
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void SetUserId(uint32_t user);
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void SetGroupId(uint32_t group);
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void SetSize(uint64_t new_size);
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void Truncate(uint64_t new_size);
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bool FreeIndirect(uint64_t from, uint64_t offset, uint32_t block_id,
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int indirection, uint64_t entry_span);
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Block* GetBlock(uint64_t offset);
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Block* GetBlockFromTable(Block* table, uint32_t index);
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Inode* Open(const char* elem, int flags, mode_t mode);
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bool Link(const char* elem, Inode* dest, bool directories);
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bool Symlink(const char* elem, const char* dest);
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bool Unlink(const char* elem, bool directories, bool force=false);
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Inode* UnlinkKeep(const char* elem, bool directories, bool force=false);
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ssize_t ReadAt(uint8_t* buffer, size_t count, off_t offset);
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ssize_t WriteAt(const uint8_t* buffer, size_t count, off_t offset);
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bool UnembedInInode();
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bool Rename(Inode* olddir, const char* oldname, const char* newname);
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Inode* CreateDirectory(const char* path, mode_t mode);
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bool RemoveDirectory(const char* path);
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bool IsEmptyDirectory();
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void Refer();
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void Unref();
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void RemoteRefer();
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void RemoteUnref();
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void Sync();
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void BeginWrite();
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void FinishWrite();
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void Modified();
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void Use();
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void Unlink();
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void Prelink();
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void Delete();
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};
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#endif
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