50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
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#include <inc/fs.h>
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#include <inc/lib.h>
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#define SECTSIZE 512 // bytes per disk sector
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#define BLKSECTS (BLKSIZE / SECTSIZE) // sectors per block
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/* Disk block n, when in memory, is mapped into the file system
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* server's address space at DISKMAP + (n*BLKSIZE). */
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#define DISKMAP 0x10000000
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/* Maximum disk size we can handle (3GB) */
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#define DISKSIZE 0xC0000000
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struct Super *super; // superblock
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uint32_t *bitmap; // bitmap blocks mapped in memory
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/* ide.c */
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bool ide_probe_disk1(void);
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void ide_set_disk(int diskno);
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void ide_set_partition(uint32_t first_sect, uint32_t nsect);
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int ide_read(uint32_t secno, void *dst, size_t nsecs);
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int ide_write(uint32_t secno, const void *src, size_t nsecs);
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/* bc.c */
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void* diskaddr(uint32_t blockno);
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bool va_is_mapped(void *va);
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bool va_is_dirty(void *va);
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void flush_block(void *addr);
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void bc_init(void);
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/* fs.c */
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void fs_init(void);
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int file_get_block(struct File *f, uint32_t file_blockno, char **pblk);
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int file_create(const char *path, struct File **f);
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int file_open(const char *path, struct File **f);
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ssize_t file_read(struct File *f, void *buf, size_t count, off_t offset);
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int file_write(struct File *f, const void *buf, size_t count, off_t offset);
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int file_set_size(struct File *f, off_t newsize);
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void file_flush(struct File *f);
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int file_remove(const char *path);
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void fs_sync(void);
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/* int map_block(uint32_t); */
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bool block_is_free(uint32_t blockno);
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int alloc_block(void);
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/* test.c */
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void fs_test(void);
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