Mercurial > hg > Members > mitsuki > xv6_rpi2_port
view uprogs/buf.h @ 2:77a5fa9bee07 default tip
add kernel.elf
author | mir3636 |
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date | Sun, 06 Jan 2019 19:37:16 +0900 |
parents | ed10291ff195 |
children |
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struct buf { int flags; uint dev; uint sector; struct buf *prev; // LRU cache list struct buf *next; struct buf *qnext; // disk queue uchar data[512]; }; #define B_BUSY 0x1 // buffer is locked by some process #define B_VALID 0x2 // buffer has been read from disk #define B_DIRTY 0x4 // buffer needs to be written to disk