servers/vfs/glo.h

   1 #ifndef __VFS_GLO_H__
   2 #define __VFS_GLO_H__
   3
   4 /* EXTERN should be extern except for the table file */
   5 #ifdef _TABLE
   6 #undef EXTERN
   7 #define EXTERN
   8 #endif
   9
  10 #include <minix/param.h>
  11
  12 /* File System global variables */
  13 EXTERN struct fproc *fp;        /* pointer to caller's fproc struct */
  14 EXTERN int susp_count;          /* number of procs suspended on pipe */
  15 EXTERN int nr_locks;            /* number of locks currently in place */
  16 EXTERN int reviving;            /* number of pipe processes to be revived */
  17 EXTERN int pending;
  18 EXTERN int sending;
  19 EXTERN int verbose;
  20
  21 EXTERN dev_t ROOT_DEV;          /* device number of the root device */
  22 EXTERN int ROOT_FS_E;           /* kernel endpoint of the root FS proc */
  23 EXTERN u32_t system_hz;         /* system clock frequency. */
  24
  25 /* The parameters of the call are kept here. */
  26 EXTERN message m_in;            /* the input message itself */
  27 EXTERN message m_out;           /* the output message used for reply */
  28 # define who_p          ((int) (fp - fproc))
  29 # define isokslot(p)    (p >= 0 && \
  30                          p < (int)(sizeof(fproc) / sizeof(struct fproc)))
  31 # define who_e          (self != NULL && fp != NULL ? fp->fp_endpoint : \
  32                                                         m_in.m_source)
  33 # define call_nr        (m_in.m_type)
  34 # define job_m_in       (self->w_job.j_m_in)
  35 # define job_call_nr    (job_m_in.m_type)
  36 # define super_user     (fp->fp_effuid == SU_UID ? 1 : 0)
  37 # define scratch(p)             (scratchpad[((int) ((p) - fproc))])
  38 EXTERN struct worker_thread *self;
  39 EXTERN int force_sync;          /* toggle forced synchronous communication */
  40 EXTERN int deadlock_resolving;
  41 EXTERN mutex_t exec_lock;
  42 EXTERN mutex_t bsf_lock;/* Global lock for access to block special files */
  43 EXTERN struct worker_thread workers[NR_WTHREADS];
  44 EXTERN struct worker_thread sys_worker;
  45 EXTERN struct worker_thread dl_worker;
  46 EXTERN thread_t invalid_thread_id;
  47 EXTERN char mount_label[LABEL_MAX];     /* label of file system to mount */
  48
  49 /* The following variables are used for returning results to the caller. */
  50 EXTERN int err_code;            /* temporary storage for error number */
  51
  52 /* Data initialized elsewhere. */
  53 extern int(*call_vec[]) (void);
  54 extern int(*pfs_call_vec[]) (void);
  55 extern char mode_map[]; /* mapping from O_ACCMODE mask to R_BIT/W_BIT flags */
  56
  57 EXTERN struct kinfo kinfo;     /* kernel information */
  58
  59 #endif