1FUNCTION::USER_STRIN(3staSpt)ring and data retrieving fFuUnNCTION::USER_STRIN(3stap)
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NAME

6       function::user_string_n - Retrieves string of given length from user
7       space
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SYNOPSIS

10       1) user_string_n:string(addr:long,n:long)
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12       2) user_string_n:string(addr:long,n:long,err_msg:string)
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ARGUMENTS

15       addr
16           the user space address to retrieve the string from
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18       n
19           the maximum length of the string (if not null terminated)
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21       err_msg
22           the error message to return when data isn't available
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DESCRIPTION

25       1) Returns the C string of a maximum given length from a given user
26       space address. Reports an error on the rare cases when userspace data
27       is not accessible at the given address.
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29       2) Returns the C string of a maximum given length from a given user
30       space address. Returns the given error message string on the rare cases
31       when userspace data is not accessible at the given address.
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SEE ALSO

34       tapset::uconversions(3stap)
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38SystemTap Tapset Reference         June 2018       FUNCTION::USER_STRIN(3stap)