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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-26 16:38:00 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-26 16:38:00 -0400
commit97d5c458cfa039d857301e1ca7d5af3beb37131d (patch)
treeb460cd850d0537eb71806ba30358840377b27688 /static/v10/man3/juke.3
parentb89dc2331a50c63f8b33272a5c4c61ab98abdaa3 (diff)
build: Better Build System
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-.TH INTERNAL 3
-.CT 2 file_io
-.SH NAME
-jukebox routines
-.tr %"
-.SH SYNOPSIS
-.B "#include %hdr.h%"
-.PP
-.tr %%
-.B "int j_shelf_to_drive(int sh, Side side, int dr, char *err)"
-.PP
-.B "int j_drive_to_shelf(int dr, int sh, Side side, char *err)"
-.PP
-.B "int j_empty_drive(int tlim, char *buf)"
-.PP
-.B "void j_rdshelves(char *buf)"
-.PP
-.B "int j_getstatus(char *buf)"
-.PP
-.B "int j_scsiio(struct scsi_cmd *cmd, int ncmd,"
-.br
-.B "\ \ \ \ \ \ struct scsi_return *ret, int nret, char *err)"
-.PP
-.B "int j_shelfof(char *vol_id)"
-.PP
-.B "int j_volid(int dr, char *err)"
-.PP
-.B "extern char *j_shelf[NSHELF];"
-.PP
-.B "extern void pperror(char *buf, char *mesg);
-.SH DESCRIPTION
-.I J_shelf_to_drive
-places the disk in shelf
-.I sh
-in logical drive
-.IR dr .
-It returns 0 on success;
-otherwise an error message is placed in
-.I err .
-.PP
-.I J_drive_to_shelf
-places the disk
-in logical drive
-.IR dr
-in shelf
-.IR sh .
-If
-.I sh
-is negative,
-the disk is returned to its home shelf.
-It returns 0 on success;
-otherwise an error message is placed in
-.IR err .
-.PP
-.I J_rdshelves
-initializes each element of
-.I j_shelf
-to the volid of the disk on that shelf.
-A zero pointer means there is no disk;
-a name of
-.B UNALLOCATED
-means the disk has not been allocated a name yet.
-It returns 0 on success;
-otherwise an error message is placed in
-.IR err .
-.PP
-.I J_getstatus
-initializes
-.B j_status
-which include the following fields:
-.EX
- struct Lunstatus lun[NLUN]; /* disk status */
- uchar shelf[NSHELF]; /* shelf status */
- uchar iounit; /* I/O unit status */
- uchar carrier; /* carrier status */
- uchar udrive; /* upper drive status */
- uchar ldrive; /* lower drive status */
-.EE
-A return value of 0 implies success;
-otherwise \-1 is returned and an error message is placed in
-.IR err .
-.PP
-.I J_scsiio
-performs a SCSI transaction.
-It sends the command in
-.I cmd
-and
-.I ncmd
-data bytes and stores the return status in
-.IR ret .
-A return value of 0 implies success;
-otherwise \-1 is returned and an error message is placed in
-.IR err .
-.PP
-.I J_shelfof
-returns the shelf number of the disk labelled
-.IR vol_id .
-If there is no such disk,
-\-1 is returned.
-.PP
-.I J_volid
-returns the volid of the disk on drive
-.I dr
-in
-.IR err .
-A return value of 0 implies success;
-otherwise \-1 is returned and an error message is placed in
-.IR err .
-.PP
-.I Pperror
-returns an error message that is contained in
-.IR buf.
-.PP
-.SH "SEE ALSO"
-.SH DIAGNOSTICS