Get a logical file’s parameters
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WSupported on Windows
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USupported on Unix
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VSupported on OpenVMS
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NSupported in Synergy .NET
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xcall FS_PARAM([rtrn_level], [record_size], [last_rec], [rtrn_channel], [which_level], & [which_channel][, error])
Arguments
rtrn_level
(optional) Returned with the file-stack level. (n)
record_size
(optional) Returned with the record size of the logical file. (n)
last_rec
(optional) Returned with the last record written to the logical file. (n)
rtrn_channel
(optional) Returned with the file-stack channel. (n)
which_level
(optional) The file-stack level to access. (n)
which_channel
(optional) The file-stack channel to use. (n)
error
(optional) Returned with one of the following error flags: (n)
0 = No error occurred.
1 = Not a file-stack channel.
2 = File stack not active.
4 = No logical file stacked.
6 = Invalid file-stack level.
Discussion
FS_PARAM returns information about a given logical file for a given file-stack system.
If which_level is not passed or is passed and zero, the current (highest) logical file (level) will be used. If which_level is not specified and no logical file is currently active, rtrn_level will be set to zero and record_size and last_rec will be undefined. If which_channel is not passed, the default file stack will be used.
Examples
This example returns the current (highest) file-stack level in level, the record size of the current logical file in recsize, the last record written in lastrec, and any error in sts.
xcall fs_param(level, recsize, lastrec,,,, sts)
