servers/vfs/fproc.h

   1 #ifndef __VFS_FPROC_H__
   2 #define __VFS_FPROC_H__
   3
   4 #include <sys/select.h>
   5 #include <minix/safecopies.h>
   6
   7 /* This is the per-process information.  A slot is reserved for each potential
   8  * process. Thus NR_PROCS must be the same as in the kernel. It is not
   9  * possible or even necessary to tell when a slot is free here.
  10  */
  11 EXTERN struct fproc {
  12   unsigned fp_flags;
  13
  14   mode_t fp_umask;              /* mask set by umask system call */
  15
  16   struct vnode *fp_wd;          /* working directory; NULL during reboot */
  17   struct vnode *fp_rd;          /* root directory; NULL during reboot */
  18
  19   struct filp *fp_filp[OPEN_MAX];/* the file descriptor table */
  20
  21   fd_set fp_filp_inuse;         /* which fd's are in use? */
  22   uid_t fp_realuid;             /* real user id */
  23   uid_t fp_effuid;              /* effective user id */
  24   gid_t fp_realgid;             /* real group id */
  25   gid_t fp_effgid;              /* effective group id */
  26   int fp_ngroups;               /* number of supplemental groups */
  27   gid_t fp_sgroups[NGROUPS_MAX];/* supplemental groups */
  28   dev_t fp_tty;                 /* major/minor of controlling tty */
  29   int fp_fd;                    /* place to save fd if rd/wr can't finish */
  30   char *fp_buffer;              /* place to save buffer if rd/wr can't finish*/
  31   int  fp_nbytes;               /* place to save bytes if rd/wr can't finish */
  32   int  fp_cum_io_partial;       /* partial byte count if rd/wr can't finish */
  33   int fp_revived;               /* set to indicate process being revived */
  34   endpoint_t fp_task;           /* which task is proc suspended on */
  35   int fp_blocked_on;            /* what is it blocked on */
  36
  37   endpoint_t fp_ioproc;         /* proc no. in suspended-on i/o message */
  38   cp_grant_id_t fp_grant;       /* revoke this grant on unsuspend if > -1 */
  39
  40   char fp_sesldr;               /* true if proc is a session leader */
  41   char fp_execced;              /* true if proc has exec()ced after fork */
  42   pid_t fp_pid;                 /* process id */
  43
  44   fd_set fp_cloexec_set;        /* bit map for POSIX Table 6-2 FD_CLOEXEC */
  45   endpoint_t fp_endpoint;       /* kernel endpoint number of this process */
  46 } fproc[NR_PROCS];
  47
  48 /* fp_flags */
  49 #define NO_FLAGS        0
  50 #define SUSP_REOPEN     1       /* Process is suspended until the reopens are
  51                                  * completed (after the restart of a driver).
  52                                  */
  53
  54 /* Field values. */
  55 #define NOT_REVIVING       0xC0FFEEE    /* process is not being revived */
  56 #define REVIVING           0xDEEAD      /* process is being revived from suspension */
  57 #define PID_FREE           0    /* process slot free */
  58
  59 #endif /* __VFS_FPROC_H__ */