1 #ifndef __VFS_FPROC_H__ 2 #define __VFS_FPROC_H__ 3 4 #include "threads.h" 5 6 #include <sys/select.h> 7 #include <minix/safecopies.h> 8 #include <minix/sef.h> 9 10 /* This is the per-process information. A slot is reserved for each potential 11 * process. Thus NR_PROCS must be the same as in the kernel. It is not 12 * possible or even necessary to tell when a slot is free here. 13 */ 14 #define LOCK_DEBUG 0 15 EXTERN struct fproc { 16 unsigned fp_flags; 17 18 pid_t fp_pid; /* process id */ 19 endpoint_t fp_endpoint; /* kernel endpoint number of this process */ 20 21 struct vnode *fp_wd; /* working directory; NULL during reboot */ 22 struct vnode *fp_rd; /* root directory; NULL during reboot */ 23 24 struct filp *fp_filp[OPEN_MAX];/* the file descriptor table (free if NULL) */ 25 fd_set fp_cloexec_set; /* bit map for POSIX Table 6-2 FD_CLOEXEC */ 26 27 dev_t fp_tty; /* major/minor of controlling tty */ 28 29 int fp_blocked_on; /* what is it blocked on */ 30 int fp_block_callnr; /* blocked call if rd/wr can't finish */ 31 size_t fp_cum_io_partial; /* partial byte count if write can't finish */ 32 endpoint_t fp_task; /* which task is proc suspended on */ 33 cp_grant_id_t fp_grant; /* revoke this grant on unsuspend if > -1 */ 34 35 int fp_fd; /* file descriptor for blocking call */ 36 vir_bytes fp_io_buffer; /* user buffer address for ongoing I/O */ 37 size_t fp_io_nbytes; /* number of bytes left for ongoing I/O */ 38 39 uid_t fp_realuid; /* real user id */ 40 uid_t fp_effuid; /* effective user id */ 41 gid_t fp_realgid; /* real group id */ 42 gid_t fp_effgid; /* effective group id */ 43 int fp_ngroups; /* number of supplemental groups */ 44 gid_t fp_sgroups[NGROUPS_MAX];/* supplemental groups */ 45 mode_t fp_umask; /* mask set by umask system call */ 46 47 mutex_t fp_lock; /* mutex to lock fproc object */ 48 struct worker_thread *fp_worker;/* active worker thread, or NULL */ 49 void (*fp_func)(void); /* handler function for pending work */ 50 message fp_msg; /* pending or active message from process */ 51 message fp_pm_msg; /* pending/active postponed PM request */ 52 53 char fp_name[PROC_NAME_LEN]; /* Last exec() */ 54 #if LOCK_DEBUG 55 int fp_vp_rdlocks; /* number of read-only locks on vnodes */ 56 int fp_vmnt_rdlocks; /* number of read-only locks on vmnts */ 57 #endif 58 } fproc[NR_PROCS]; 59 60 /* fp_flags */ 61 #define FP_NOFLAGS 0000 62 #define FP_SRV_PROC 0001 /* Set if process is a service */ 63 #define FP_REVIVED 0002 /* Indicates process is being revived */ 64 #define FP_SESLDR 0004 /* Set if process is session leader */ 65 #define FP_PENDING 0010 /* Set if process has pending work */ 66 #define FP_EXITING 0020 /* Set if process is exiting */ 67 #define FP_PM_WORK 0040 /* Set if process has a postponed PM request */ 68 69 /* Field values. */ 70 #define NOT_REVIVING 0xC0FFEEE /* process is not being revived */ 71 #define REVIVING 0xDEEAD /* process is being revived from suspension */ 72 #define PID_FREE 0 /* process slot free */ 73 74 #endif /* __VFS_FPROC_H__ */ 75