minix/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 sending;
  18 EXTERN int verbose;
  19
  20 EXTERN dev_t ROOT_DEV;          /* device number of the root device */
  21 EXTERN int ROOT_FS_E;           /* kernel endpoint of the root FS proc */
  22 EXTERN u32_t system_hz;         /* system clock frequency. */
  23
  24 /* The parameters of the call are kept here. */
  25 EXTERN message m_in;            /* the input message itself */
  26 # define who_p          ((int) (fp - fproc))
  27 # define fproc_addr(e)  (&fproc[_ENDPOINT_P(e)])
  28 # define who_e          (self != NULL ? fp->fp_endpoint : m_in.m_source)
  29 # define call_nr        (m_in.m_type)
  30 # define job_m_in       (self->w_m_in)
  31 # define job_m_out      (self->w_m_out)
  32 # define job_call_nr    (job_m_in.m_type)
  33 # define super_user     (fp->fp_effuid == SU_UID ? 1 : 0)
  34 EXTERN struct worker_thread *self;
  35 EXTERN int deadlock_resolving;
  36 EXTERN mutex_t bsf_lock;/* Global lock for access to block special files */
  37 EXTERN struct worker_thread workers[NR_WTHREADS];
  38 EXTERN char mount_label[LABEL_MAX];     /* label of file system to mount */
  39
  40 /* The following variables are used for returning results to the caller. */
  41 EXTERN int err_code;            /* temporary storage for error number */
  42
  43 /* Data initialized elsewhere. */
  44 extern int (* const call_vec[])(void);
  45
  46 #endif