66 lines
1.3 KiB
Groff
66 lines
1.3 KiB
Groff
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TTYSLOT(3) Minix Programmer's Manual TTYSLOT(3)
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NAME
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ttyslot, fttyslot - utmp slot number
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SYNOPSIS
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#define _MINIX_SOURCE 1
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#include <unistd.h>
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int ttyslot(void)
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int fttyslot(int fd)
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DESCRIPTION
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Ttyslot() returns the index of the login terminal in the utmp file. It
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tries fttyslot() on file descriptors 0, 1, and 2 to find the index.
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Fttyslot() returns the utmp index of the terminal associated with file
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descriptor fd. First it tries to map fd to a terminal name with
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ttyname(3), then it searches the ttytab(5) database with the getttyent(3)
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function for this terminal. This means that the utmp slot number is the
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same as the ttytab entry number counting from 1. The value 0 is returned
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if no slot number can be found for a file descriptor.
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SEE ALSO
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ttyname(3), getttyent(3), utmp(5), ttytab(5), init(8).
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NOTES
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Since 0 is used as an error return this means that the first entry in the
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utmp file is not used.
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Ttyslot() is often found in a UNIX implementation, fttyslot() is Minix
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specific.
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AUTHOR
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Kees J. Bot (kjb@cs.vu.nl)
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1
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