f32f3638f4
- Got rid of dummy proc[0]. Now proc[0] is init. - Added initcode.S to exec /init, so that /init is just a regular binary. - Moved exec out of sysfile to exec.c - Moved code dealing with fs guts (like struct inode) from sysfile.c to fs.c. Code dealing with system call arguments stays in sysfile.c - Refactored directory routines in fs.c; should be simpler. - Changed iget to return *unlocked* inode structure. This solves the lookup-then-use race in namei without introducing deadlocks. It also enabled getting rid of the dummy proc[0].
21 lines
432 B
C
21 lines
432 B
C
// in-core file system types
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struct inode {
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uint dev; // Device number
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uint inum; // Inode number
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int ref; // Reference count
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int flags; // I_BUSY, I_VALID
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short type; // copy of disk inode
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short major;
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short minor;
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short nlink;
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uint size;
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uint addrs[NADDRS];
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};
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#define ROOTDEV 1 // Device number of root file system
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#define I_BUSY 0x1
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#define I_VALID 0x2
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