servers/vfs/fproc.h

   1 #include <sys/select.h>
   2 #include <minix/safecopies.h>
   3
   4 /* This is the per-process information.  A slot is reserved for each potential
   5  * process. Thus NR_PROCS must be the same as in the kernel. It is not
   6  * possible or even necessary to tell when a slot is free here.
   7  */
   8 EXTERN struct fproc {
   9   mode_t fp_umask;              /* mask set by umask system call */
  10
  11 /*  struct inode *fp_workdir;*/ /* pointer to working directory's inode */
  12 /*  struct inode *fp_rootdir;*/ /* pointer to current root dir (see chroot) */
  13
  14   struct filp *fp_filp[OPEN_MAX];/* the file descriptor table */
  15
  16   struct vnode *fp_wd;
  17   struct vnode *fp_rd;
  18
  19   fd_set fp_filp_inuse;         /* which fd's are in use? */
  20   uid_t fp_realuid;             /* real user id */
  21   uid_t fp_effuid;              /* effective user id */
  22   gid_t fp_realgid;             /* real group id */
  23   gid_t fp_effgid;              /* effective group id */
  24   dev_t fp_tty;                 /* major/minor of controlling tty */
  25   int fp_fd;                    /* place to save fd if rd/wr can't finish */
  26   char *fp_buffer;              /* place to save buffer if rd/wr can't finish*/
  27   int  fp_nbytes;               /* place to save bytes if rd/wr can't finish */
  28   int  fp_cum_io_partial;       /* partial byte count if rd/wr can't finish */
  29   char fp_suspended;            /* set to indicate process hanging */
  30   char fp_revived;              /* set to indicate process being revived */
  31   int fp_task;                  /* which task is proc suspended on */
  32
  33   endpoint_t fp_ioproc;         /* proc no. in suspended-on i/o message */
  34   cp_grant_id_t fp_grant;       /* revoke this grant on unsuspend if > -1 */
  35
  36   char fp_sesldr;               /* true if proc is a session leader */
  37   char fp_execced;              /* true if proc has exec()ced after fork */
  38   pid_t fp_pid;                 /* process id */
  39
  40   fd_set fp_cloexec_set;        /* bit map for POSIX Table 6-2 FD_CLOEXEC */
  41   endpoint_t fp_endpoint;       /* kernel endpoint number of this process */
  42 } fproc[NR_PROCS];
  43
  44 /* Field values. */
  45 #define NOT_SUSPENDED      0    /* process is not suspended on pipe or task */
  46 #define SUSPENDED          1    /* process is suspended on pipe or task */
  47 #define NOT_REVIVING       0    /* process is not being revived */
  48 #define REVIVING           1    /* process is being revived from suspension */
  49 #define PID_FREE           0    /* process slot free */
  50
  51 /* Check is process number is acceptable - includes system processes. */
  52 #define isokprocnr(n)   ((unsigned)((n)+NR_TASKS) < NR_PROCS + NR_TASKS)
  53