Minix1.5/fs/fproc.h

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/* This is the per-process information.  A slot is reserved for each potential
 * process. Thus NR_PROCS must be the same as in the kernel. It is not possible
 * or even necessary to tell when a slot is free here.
 */


EXTERN struct fproc {
  mode_t fp_umask;		/* mask set by umask system call */
  struct inode *fp_workdir;	/* pointer to working directory's inode */
  struct inode *fp_rootdir;	/* pointer to current root dir (see chroot) */
  struct filp *fp_filp[OPEN_MAX];/* the file descriptor table */
  uid_t fp_realuid;		/* real user id */
  uid_t fp_effuid;		/* effective user id */
  gid_t fp_realgid;		/* real group id */
  gid_t fp_effgid;		/* effective group id */
  dev_t fs_tty;			/* major/minor of controlling tty */
  int fp_fd;			/* place to save fd if rd/wr can't finish */
  char *fp_buffer;		/* place to save buffer if rd/wr can't finish*/
  int  fp_nbytes;		/* place to save bytes if rd/wr can't finish */
  char fp_suspended;		/* set to indicate process hanging */
  char fp_revived;		/* set to indicate process being revived */
  char fp_task;			/* which task is proc suspended on */
  int fp_pid;			/* process id */
  int fp_pgrp;			/* process group */
} fproc[NR_PROCS];

/* Field values. */
#define NOT_SUSPENDED      0	/* process is not suspended on pipe or task */
#define SUSPENDED          1	/* process is suspended on pipe or task */
#define NOT_REVIVING       0	/* process is not being revived */
#define REVIVING           1	/* process is being revived from suspension */