109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012, 2013.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/kernel/descriptor.h
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A file descriptor.
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*******************************************************************************/
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#ifndef INCLUDE_SORTIX_KERNEL_DESCRIPTOR_H
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#define INCLUDE_SORTIX_KERNEL_DESCRIPTOR_H
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#include <sys/types.h>
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#include <stdint.h>
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#include <sortix/timespec.h>
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#include <sortix/kernel/kthread.h>
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#include <sortix/kernel/refcount.h>
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struct stat;
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struct timeval;
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struct winsize;
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struct kernel_dirent;
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namespace Sortix {
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class Inode;
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class Vnode;
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struct ioctx_struct;
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typedef struct ioctx_struct ioctx_t;
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class Descriptor : public Refcountable
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{
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public:
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Descriptor(Ref<Vnode> vnode, int dflags);
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virtual ~Descriptor();
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Ref<Descriptor> Fork();
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int sync(ioctx_t* ctx);
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int stat(ioctx_t* ctx, struct stat* st);
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int chmod(ioctx_t* ctx, mode_t mode);
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int chown(ioctx_t* ctx, uid_t owner, gid_t group);
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int truncate(ioctx_t* ctx, off_t length);
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off_t lseek(ioctx_t* ctx, off_t offset, int whence);
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ssize_t read(ioctx_t* ctx, uint8_t* buf, size_t count);
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ssize_t pread(ioctx_t* ctx, uint8_t* buf, size_t count, off_t off);
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ssize_t write(ioctx_t* ctx, const uint8_t* buf, size_t count);
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ssize_t pwrite(ioctx_t* ctx, const uint8_t* buf, size_t count, off_t off);
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int utimes(ioctx_t* ctx, const struct timeval times[2]);
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int isatty(ioctx_t* ctx);
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ssize_t readdirents(ioctx_t* ctx, struct kernel_dirent* dirent, size_t size,
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size_t maxcount);
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Ref<Descriptor> open(ioctx_t* ctx, const char* filename, int flags,
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mode_t mode = 0);
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int mkdir(ioctx_t* ctx, const char* filename, mode_t mode);
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int link(ioctx_t* ctx, const char* filename, Ref<Descriptor> node);
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int unlink(ioctx_t* ctx, const char* filename);
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int rmdir(ioctx_t* ctx, const char* filename);
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int symlink(ioctx_t* ctx, const char* oldname, const char* filename);
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ssize_t readlink(ioctx_t* ctx, char* buf, size_t bufsiz);
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int tcgetwinsize(ioctx_t* ctx, struct winsize* ws);
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int settermmode(ioctx_t* ctx, unsigned mode);
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int gettermmode(ioctx_t* ctx, unsigned* mode);
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private:
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Ref<Descriptor> open_elem(ioctx_t* ctx, const char* filename, int flags,
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mode_t mode);
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bool IsSeekable();
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public: /* These must never change after construction and is read-only. */
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ino_t ino;
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dev_t dev;
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mode_t type; // For use by S_IS* macros.
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public /*TODO: private*/:
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Ref<Vnode> vnode;
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kthread_mutex_t curofflock;
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bool seekable;
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bool checked_seekable;
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off_t curoff;
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int dflags;
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};
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bool LinkInodeInDir(ioctx_t* ctx, Ref<Descriptor> dir, const char* name,
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Ref<Inode> inode);
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Ref<Descriptor> OpenDirContainingPath(ioctx_t* ctx, Ref<Descriptor> from,
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const char* path, char** finalp);
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} // namespace Sortix
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#endif
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