55 lines
2.1 KiB
C
55 lines
2.1 KiB
C
#ifndef __VFS_GLO_H__
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#define __VFS_GLO_H__
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/* EXTERN should be extern except for the table file */
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#ifdef _TABLE
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#undef EXTERN
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#define EXTERN
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#endif
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/* File System global variables */
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EXTERN struct fproc *fp; /* pointer to caller's fproc struct */
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EXTERN int susp_count; /* number of procs suspended on pipe */
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EXTERN int nr_locks; /* number of locks currently in place */
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EXTERN int reviving; /* number of pipe processes to be revived */
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EXTERN int pending;
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EXTERN int sending;
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EXTERN dev_t ROOT_DEV; /* device number of the root device */
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EXTERN int ROOT_FS_E; /* kernel endpoint of the root FS proc */
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EXTERN u32_t system_hz; /* system clock frequency. */
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/* The parameters of the call are kept here. */
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EXTERN message m_in; /* the input message itself */
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EXTERN message m_out; /* the output message used for reply */
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# define who_p ((int) (fp - fproc))
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# define isokslot(p) (p >= 0 && \
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p < (int)(sizeof(fproc) / sizeof(struct fproc)))
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#if 0
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# define who_e (isokslot(who_p) ? fp->fp_endpoint : m_in.m_source)
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#else
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# define who_e (isokslot(who_p) && fp->fp_endpoint != NONE ? \
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fp->fp_endpoint : m_in.m_source)
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#endif
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# define call_nr (m_in.m_type)
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# define super_user (fp->fp_effuid == SU_UID ? 1 : 0)
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# define scratch(p) (scratchpad[((int) ((p) - fproc))])
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EXTERN struct worker_thread *self;
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EXTERN int force_sync; /* toggle forced synchronous communication */
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EXTERN int deadlock_resolving;
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EXTERN mutex_t exec_lock;
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EXTERN mutex_t bsf_lock;/* Global lock for access to block special files */
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EXTERN struct worker_thread workers[NR_WTHREADS];
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EXTERN struct worker_thread sys_worker;
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EXTERN struct worker_thread dl_worker;
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EXTERN char mount_label[LABEL_MAX]; /* label of file system to mount */
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/* The following variables are used for returning results to the caller. */
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EXTERN int err_code; /* temporary storage for error number */
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/* Data initialized elsewhere. */
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extern _PROTOTYPE (int (*call_vec[]), (void) ); /* sys call table */
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extern _PROTOTYPE (int (*pfs_call_vec[]), (void) ); /* pfs callback table */
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extern char mode_map[]; /* mapping from O_ACCMODE mask to R_BIT/W_BIT flags */
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#endif
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