44f34e53d5
This commit introduces a new request type called REQ_BPEEK. It requests minor device blocks from the FS. Analogously to REQ_PEEK, it requests the filesystem to get the requested blocks into its cache, without actually copying the result anywhere. Change-Id: If1d06645b0e17553a64b3167091e9d12efeb3d6f
33 lines
1.0 KiB
C
33 lines
1.0 KiB
C
#ifndef __VFS_VMNT_H__
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#define __VFS_VMNT_H__
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#include "tll.h"
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#include "comm.h"
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EXTERN struct vmnt {
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int m_fs_e; /* FS process' kernel endpoint */
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tll_t m_lock;
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comm_t m_comm;
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dev_t m_dev; /* device number */
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unsigned int m_flags; /* mount flags */
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struct vnode *m_mounted_on; /* vnode on which the partition is mounted */
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struct vnode *m_root_node; /* root vnode */
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char m_label[LABEL_MAX]; /* label of the file system process */
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char m_mount_path[PATH_MAX]; /* path on which vmnt is mounted */
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char m_mount_dev[PATH_MAX]; /* path on which vmnt is mounted */
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int m_haspeek; /* supports REQ_PEEK, REQ_BPEEK */
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} vmnt[NR_MNTS];
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/* vmnt flags */
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#define VMNT_READONLY 01 /* Device mounted readonly */
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#define VMNT_CALLBACK 02 /* FS did back call */
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#define VMNT_MOUNTING 04 /* Device is being mounted */
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#define VMNT_FORCEROOTBSF 010 /* Force usage of none-device */
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/* vmnt lock types mapping */
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#define VMNT_READ TLL_READ
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#define VMNT_WRITE TLL_READSER
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#define VMNT_EXCL TLL_WRITE
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#endif
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