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Ulm's Modula-2 Library:
SysLseek

NAME

SysLseek - set and return current position of a file descriptor

SYNOPSIS

PROCEDURE Lseek(fd: CARDINAL; offset: SystemTypes.OFF;
                whence: CARDINAL) : BOOLEAN;



PROCEDURE Tell(fd: CARDINAL;
               VAR offset: SystemTypes.OFF) : BOOLEAN;

DESCRIPTION

Lseek sets the current position of fd to offset which is interpreted in dependance of whence:
0
absolute
1
relative to the current position
2
relative to the end of the position

Tell returns the current position of fd.

Note that not all file descriptors support these operations.

DIAGNOSTICS

On failure, FALSE is returned and Errno.errno is set.

SEE ALSO

lseek(2)
Edited by: borchert, last change: 1997/02/26, revision: 1.1, converted to HTML: 1997/04/28

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