2006-03-09 17:00:33 +01:00
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#include <sys/select.h>
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2006-06-20 12:12:09 +02:00
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#include <minix/safecopies.h>
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2006-03-09 17:00:33 +01:00
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2005-04-21 16:53:53 +02:00
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/* This is the per-process information. A slot is reserved for each potential
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* process. Thus NR_PROCS must be the same as in the kernel. It is not
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* possible or even necessary to tell when a slot is free here.
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*/
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EXTERN struct fproc {
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mode_t fp_umask; /* mask set by umask system call */
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struct inode *fp_workdir; /* pointer to working directory's inode */
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struct inode *fp_rootdir; /* pointer to current root dir (see chroot) */
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struct filp *fp_filp[OPEN_MAX];/* the file descriptor table */
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2006-03-09 17:00:33 +01:00
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fd_set fp_filp_inuse; /* which fd's are in use? */
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2005-04-21 16:53:53 +02:00
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uid_t fp_realuid; /* real user id */
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uid_t fp_effuid; /* effective user id */
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gid_t fp_realgid; /* real group id */
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gid_t fp_effgid; /* effective group id */
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dev_t fp_tty; /* major/minor of controlling tty */
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int fp_fd; /* place to save fd if rd/wr can't finish */
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char *fp_buffer; /* place to save buffer if rd/wr can't finish*/
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int fp_nbytes; /* place to save bytes if rd/wr can't finish */
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int fp_cum_io_partial; /* partial byte count if rd/wr can't finish */
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char fp_suspended; /* set to indicate process hanging */
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char fp_revived; /* set to indicate process being revived */
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endpoint-aware conversion of servers.
'who', indicating caller number in pm and fs and some other servers, has
been removed in favour of 'who_e' (endpoint) and 'who_p' (proc nr.).
In both PM and FS, isokendpt() convert endpoints to process slot
numbers, returning OK if it was a valid and consistent endpoint number.
okendpt() does the same but panic()s if it doesn't succeed. (In PM,
this is pm_isok..)
pm and fs keep their own records of process endpoints in their proc tables,
which are needed to make kernel calls about those processes.
message field names have changed.
fs drivers are endpoints.
fs now doesn't try to get out of driver deadlock, as the protocol isn't
supposed to let that happen any more. (A warning is printed if ELOCKED
is detected though.)
fproc[].fp_task (indicating which driver the process is suspended on)
became an int.
PM and FS now get endpoint numbers of initial boot processes from the
kernel. These happen to be the same as the old proc numbers, to let
user processes reach them with the old numbers, but FS and PM don't know
that. All new processes after INIT, even after the generation number
wraps around, get endpoint numbers with generation 1 and higher, so
the first instances of the boot processes are the only processes ever
to have endpoint numbers in the old proc number range.
More return code checks of sys_* functions have been added.
IS has become endpoint-aware. Ditched the 'text' and 'data' fields
in the kernel dump (which show locations, not sizes, so aren't terribly
useful) in favour of the endpoint number. Proc number is still visible.
Some other dumps (e.g. dmap, rs) show endpoint numbers now too which got
the formatting changed.
PM reading segments using rw_seg() has changed - it uses other fields
in the message now instead of encoding the segment and process number and
fd in the fd field. For that it uses _read_pm() and _write_pm() which to
_taskcall()s directly in pm/misc.c.
PM now sys_exit()s itself on panic(), instead of sys_abort().
RS also talks in endpoints instead of process numbers.
2006-03-03 11:20:58 +01:00
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int fp_task; /* which task is proc suspended on */
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2006-06-20 12:12:09 +02:00
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endpoint_t fp_ioproc; /* proc no. in suspended-on i/o message */
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cp_grant_id_t fp_grant; /* revoke this grant on unsuspend if > -1 */
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2005-04-21 16:53:53 +02:00
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char fp_sesldr; /* true if proc is a session leader */
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2005-10-20 21:39:32 +02:00
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char fp_execced; /* true if proc has exec()ced after fork */
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pid_t fp_pid; /* process id */
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2006-06-27 18:47:35 +02:00
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fd_set fp_cloexec_set; /* bit map for POSIX Table 6-2 FD_CLOEXEC */
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2006-06-20 12:12:09 +02:00
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endpoint_t fp_endpoint; /* kernel endpoint number of this process */
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2005-04-21 16:53:53 +02:00
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} fproc[NR_PROCS];
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/* Field values. */
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#define NOT_SUSPENDED 0 /* process is not suspended on pipe or task */
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#define SUSPENDED 1 /* process is suspended on pipe or task */
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#define NOT_REVIVING 0 /* process is not being revived */
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#define REVIVING 1 /* process is being revived from suspension */
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#define PID_FREE 0 /* process slot free */
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/* Check is process number is acceptable - includes system processes. */
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#define isokprocnr(n) ((unsigned)((n)+NR_TASKS) < NR_PROCS + NR_TASKS)
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