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STRLEN_USER(9) Memory Management in Linux STRLEN_USER(9)

NAME

strlen_user - Get the size of a string in user space.

SYNOPSIS

strlen_user(str);

ARGUMENTS

str
The string to measure.

CONTEXT

User context only. This function may sleep.

DESCRIPTION

Get the size of a NUL-terminated string in user space.
Returns the size of the string INCLUDING the terminating NUL. On exception, returns 0.
If there is a limit on the length of a valid string, you may wish to consider using strnlen_user instead.

COPYRIGHT

March 2016 Kernel Hackers Manual 3.2.