44 lines
1.7 KiB
C
44 lines
1.7 KiB
C
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EXTERN struct vnode {
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endpoint_t v_fs_e; /* FS process' endpoint number */
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ino_t v_inode_nr; /* inode number on its (minor) device */
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mode_t v_mode; /* file type, protection, etc. */
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uid_t v_uid;
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gid_t v_gid;
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off_t v_size; /* current file size in bytes */
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int v_ref_count; /* # times vnode used; 0 means slot is free */
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int v_fs_count; /* # reference at the underlying FS */
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int v_ref_check; /* for consistency checks */
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char v_pipe; /* set to I_PIPE if pipe */
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char v_w_pipe_busy; /* true iff writer suspended */
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off_t v_pipe_rd_pos;
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off_t v_pipe_wr_pos;
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endpoint_t v_bfs_e; /* endpoint number for the FS proces in case
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of a block special file */
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dev_t v_dev; /* device number on which the corresponding
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inode resides */
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Dev_t v_sdev; /* device number for special files */
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unsigned short v_index; /* inode's index in the FS inode table */
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struct vmnt *v_vmnt; /* vmnt object of the partition */
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/* For debugging */
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char *v_file;
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int v_line;
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int v_isfifo;
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} vnode[NR_VNODES];
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#define NIL_VNODE (struct vnode *) 0 /* indicates absence of vnode slot */
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/* Field values. Note that CLEAN and DIRTY are defined in "const.h" */
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#define NO_PIPE 0 /* i_pipe is NO_PIPE if inode is not a pipe */
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#define I_PIPE 1 /* i_pipe is I_PIPE if inode is a pipe */
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#define NO_MOUNT 0 /* i_mount is NO_MOUNT if file not mounted on*/
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#define I_MOUNT 1 /* i_mount is I_MOUNT if file mounted on */
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#define NO_SEEK 0 /* i_seek = NO_SEEK if last op was not SEEK */
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#define ISEEK 1 /* i_seek = ISEEK if last op was SEEK */
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