xv6/file.h

struct file {
  enum { FD_CLOSED, FD_NONE, FD_PIPE, FD_INODE } type;
  int ref; // reference count
  char readable;
  char writable;
  struct pipe *pipe;
  struct inode *ip;
  uint off;
};
struct fd -> struct file 2006-09-06 18:38:56 +00:00			`struct file {`
PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf Various changes made while offline. + bwrite sector argument is redundant; use b->sector. + reformatting of files for nicer PDF page breaks + distinguish between locked, unlocked inodes in type signatures + change FD_FILE to FD_INODE + move userinit (nee proc0init) to proc.c + move ROOTDEV to param.h + always parenthesize sizeof argument 2007-08-22 06:01:32 +00:00			`enum { FD_CLOSED, FD_NONE, FD_PIPE, FD_INODE } type;`
more name cleanup 2006-07-16 02:04:58 +00:00			`int ref; // reference count`
file descriptors pipes 2006-06-27 14:35:53 +00:00			`char readable;`
writeable => writable 2006-09-06 18:06:04 +00:00			`char writable;`
file descriptors pipes 2006-06-27 14:35:53 +00:00			`struct pipe *pipe;`
Remove struct uinode. Remove type arg to mknod (assume T_DEV). 2007-08-24 20:54:23 +00:00			`struct inode *ip;`
fix race in holding() check in acquire() give cpu1 a TSS and gdt for when it enters scheduler() and a pseudo proc[] entry for each cpu cpu0 waits for each other cpu to start up read() for files 2006-08-08 19:58:06 +00:00			`uint off;`
file descriptors pipes 2006-06-27 14:35:53 +00:00			`};`