977b25a76a
The overloading of IR emits magic \X'...' sequences that turn into HTML manual links. But not all such IR invocations should be manual links; those had to be written to avoid the IR macro before. Worse, the \X'...' ending the IR causes troff to emit only a single space after a period. Defining a new IM macro for manual references fixes both problems. Fixes #441.
53 lines
806 B
Groff
53 lines
806 B
Groff
.TH SEEK 3
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.SH NAME
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seek \- change file offset
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.SH SYNOPSIS
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.B #include <u.h>
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.br
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.B #include <libc.h>
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.PP
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.B
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vlong seek(int fd, vlong n, int type)
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.SH DESCRIPTION
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.I Seek
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sets the offset for the file
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associated with
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.I fd
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as follows:
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.IP
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If
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.I type
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is 0, the offset is set to
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.I n
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bytes.
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.IP
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If
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.I type
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is 1, the pointer is set to its current location plus
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.IR n .
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.IP
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If
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.I type
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is 2, the pointer is set to the size of the
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file plus
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.IR n .
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.PP
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The new file offset value is returned.
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.PP
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Seeking in a directory is not allowed.
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Seeking in a pipe is a no-op.
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.SH SOURCE
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.B \*9/src/lib9/seek.c
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.SH SEE ALSO
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.IM intro (3) ,
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.IM open (3)
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.SH DIAGNOSTICS
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Sets
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.IR errstr .
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.SH BUGS
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To avoid name conflicts with the underlying system,
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.I seek
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is a preprocessor macro defined as
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.IR p9seek ;
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see
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.IM intro (3) .
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