mirror of
https://github.com/nArnoSNES/tcc-65816.git
synced 2024-06-02 19:42:59 +00:00
77 lines
1.1 KiB
C
77 lines
1.1 KiB
C
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struct inode {
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long long i_size;
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struct super_block *i_sb;
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};
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struct file {
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long long f_pos;
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};
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struct super_block {
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int s_blocksize;
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unsigned char s_blocksize_bits;
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int s_hs;
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};
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static char *
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isofs_bread(unsigned int block)
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{
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if (block)
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abort ();
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exit(0);
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}
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static int
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do_isofs_readdir(struct inode *inode, struct file *filp)
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{
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int bufsize = inode->i_sb->s_blocksize;
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unsigned char bufbits = inode->i_sb->s_blocksize_bits;
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unsigned int block, offset;
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char *bh = 0;
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int hs;
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if (filp->f_pos >= inode->i_size)
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return 0;
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offset = filp->f_pos & (bufsize - 1);
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block = filp->f_pos >> bufbits;
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hs = inode->i_sb->s_hs;
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while (filp->f_pos < inode->i_size) {
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if (!bh)
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bh = isofs_bread(block);
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hs += block << bufbits;
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if (hs == 0)
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filp->f_pos++;
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if (offset >= bufsize)
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offset &= bufsize - 1;
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if (*bh)
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filp->f_pos++;
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filp->f_pos++;
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}
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return 0;
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}
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struct super_block s;
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struct inode i;
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struct file f;
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int
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main(int argc, char **argv)
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{
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s.s_blocksize = 512;
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s.s_blocksize_bits = 9;
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i.i_size = 2048;
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i.i_sb = &s;
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f.f_pos = 0;
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do_isofs_readdir(&i,&f);
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abort ();
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}
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