61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
#ifndef __KERN_FS_FILE_H__
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#define __KERN_FS_FILE_H__
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//#include <types.h>
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#include <fs.h>
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#include <proc.h>
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#include <atomic.h>
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#include <assert.h>
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struct inode;
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struct stat;
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struct dirent;
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struct file {
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enum {
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FD_NONE, FD_INIT, FD_OPENED, FD_CLOSED,
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} status;
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bool readable;
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bool writable;
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int fd;
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off_t pos;
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struct inode *node;
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atomic_t open_count;
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};
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void fd_array_init(struct file *fd_array);
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void fd_array_open(struct file *file);
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void fd_array_close(struct file *file);
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void fd_array_dup(struct file *to, struct file *from);
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bool file_testfd(int fd, bool readable, bool writable);
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int file_open(char *path, uint32_t open_flags);
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int file_close(int fd);
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int file_read(int fd, void *base, size_t len, size_t *copied_store);
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int file_write(int fd, void *base, size_t len, size_t *copied_store);
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int file_seek(int fd, off_t pos, int whence);
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int file_fstat(int fd, struct stat *stat);
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int file_fsync(int fd);
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int file_getdirentry(int fd, struct dirent *dirent);
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int file_dup(int fd1, int fd2);
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int file_pipe(int fd[]);
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int file_mkfifo(const char *name, uint32_t open_flags);
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static inline int
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fopen_count(struct file *file) {
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return atomic_read(&(file->open_count));
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}
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static inline int
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fopen_count_inc(struct file *file) {
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return atomic_add_return(&(file->open_count), 1);
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}
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static inline int
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fopen_count_dec(struct file *file) {
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return atomic_sub_return(&(file->open_count), 1);
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}
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#endif /* !__KERN_FS_FILE_H__ */
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