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Diffstat (limited to 'man/3/indir')
| -rw-r--r-- | man/3/indir | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/man/3/indir b/man/3/indir new file mode 100644 index 00000000..04e6386b --- /dev/null +++ b/man/3/indir @@ -0,0 +1,81 @@ +.TH INDIR 3 +.SH NAME +indir \- attach to device indirectly by name +.SH SYNOPSIS +.BI "bind #*" name +[\c +.BI ! spec\c +] +.I " dir" +.SH DESCRIPTION +.I Indir +allows any other device to be referred to by its name instead of its perhaps arbitrary single character type; +.I indir +itself has the type character +.RB ` * '. +It has no name space of its own. +On attach (see +.IR attach (5)) +.I indir +interprets its device specifier string as the +.I name +of a device to which it should attach, optionally followed by specifier +.I spec +for that device, separated from the +.I name +by an exclamation mark. +Attaching to +.I indir +(eg, by +.IR sys-bind (2)), +effectively attaches to the device with the given +.I name +and +.IR spec , +and all subsequent operations in the resulting name space access that +device, not +.I indir +itself. +.PP +For example, to access +.IR cap (3), +one could write: +.IP +.B "bind -a '#*cap' /dev" +.PP +The following commands both list the second instance of +.IR ether (3), +first directly, then using +.IR indir : +.IP +.B "ls '#l1'" +.br +.B "ls '#*ether!1'" +.PP +The file +.B /dev/drivers +(see +.IR cons (3)) +lists the names of currently configured devices. +.SS Credit +Invented by Bruce Ellis for Lucent's internal Research Inferno to help name dynamically-loaded device drivers. +This is a re-implementation. +.SH SOURCE +.B /emu/port/devindir.c +.br +.B /os/port/devindir.c +.SH SEE ALSO +.IR bind (1), +.IR sys-bind (2), +.IR cons (3) +.SH DIAGNOSTICS +If +.I name +is not configured, +.I indir +returns a suitable diagnostic in the error string. +.SH BUGS +Arguably the kernel +could simply look up the +.I name +itself. |
