7eb698ea4a
For VFS, initialization is a special case for processing work: PFS and the ramdisk MFS must be fully mounted before VFS can process any other requests, in particular from init(8). This case was handled by receiving reply messages only from the FS service being mounted, but this effectively disallowed PFS from calling setuid(2) at startup. This patch lets VFS receive all messages during the mounting process, but defer processing any new requests. As a result, the FS services have a bit more freedom in what they can do during startup. Change-Id: I18275f458952a8d790736a9c9559b27bbef97b7b
49 lines
1.7 KiB
C
49 lines
1.7 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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#include <minix/param.h>
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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 sending;
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EXTERN int verbose;
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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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# define who_p ((int) (fp - fproc))
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# define fproc_addr(e) (&fproc[_ENDPOINT_P(e)])
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# define who_e (self != NULL ? fp->fp_endpoint : m_in.m_source)
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# define call_nr (m_in.m_type)
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# define job_m_in (self->w_m_in)
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# define job_m_out (self->w_m_out)
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# define job_call_nr (job_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 deadlock_resolving;
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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 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 int (* const call_vec[])(void);
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EXTERN struct kinfo kinfo; /* kernel information */
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#endif
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