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Add basic symlink support.

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- sys$readlink + readlink()
- Add a /proc/PID/exe symlink to the process's executable.
- Print symlink contents in ls output.
- Some work on plumbing options into VFS::open().
This commit is contained in:
Andreas Kling 2018-10-28 14:11:51 +01:00
parent 1d4af51250
commit 97726862dd
20 changed files with 140 additions and 46 deletions
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11
VirtualFileSystem/VirtualFileSystem.h
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@ -12,6 +12,13 @@
#include "Limits.h"
#include "FileSystem.h"
#define O_RDONLY 0
#define O_WRONLY 1
#define O_RDWR 2
#define O_DIRECTORY 00200000
#define O_NOFOLLOW 00400000
#define O_NOFOLLOW_NOERROR 0x4000000
class CharacterDevice;
class FileHandle;
@ -79,7 +86,7 @@ public:
bool mountRoot(RetainPtr<FileSystem>&&);
bool mount(RetainPtr<FileSystem>&&, const String& path);
OwnPtr<FileHandle> open(const String& path, InodeIdentifier base = InodeIdentifier());
OwnPtr<FileHandle> open(const String& path, int options = 0, InodeIdentifier base = InodeIdentifier());
OwnPtr<FileHandle> create(const String& path, InodeIdentifier base = InodeIdentifier());
OwnPtr<FileHandle> mkdir(const String& path, InodeIdentifier base = InodeIdentifier());
@ -98,7 +105,7 @@ private:
friend class FileHandle;
void enumerateDirectoryInode(InodeIdentifier, Function<bool(const FileSystem::DirectoryEntry&)>);
InodeIdentifier resolvePath(const String& path, InodeIdentifier base = InodeIdentifier());
InodeIdentifier resolvePath(const String& path, int& error, InodeIdentifier base = InodeIdentifier(), int options = 0);
InodeIdentifier resolveSymbolicLink(const String& basePath, InodeIdentifier symlinkInode);
RetainPtr<Node> allocateNode();