SYS_SEEK (0x0A)

Seeks to a specified position in a file using an offset specified from the start of the file. The file is assumed to be a byte array and the offset is given in bytes.

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On entry, R1 contains a pointer to a two-word data block:

word 1

a handle for a seekable file object

word 2

the absolute byte position to search to.

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On exit, R0 contains:

  • 0 if the request is successful

  • A negative value if the request is not successful. SYS_ERRNO can be used to read the value of the host errno variable describing the error.

Note

The effect of seeking outside the current extent of the file object is undefined.

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