Rob Herring a1eff70c02 util: Add xa{v}sprintf_append functions ...

Add variadic and va_list functions, xa{v}sprintf, which appends a
formatted string to an existing string and re-allocate the string buffer
if necessary. xasprintf becomes just a special case of xasprintf_append
with a NULL starting string.

Rather than looping to get a big enough buffer, simply the implementation
by assuming we have a C99 compliant vsnprintf implementation to return the
necessary size. A side effect is glibc 2.0 support is dropped which seems
unnecessary.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

2018-11-25 18:21:48 +11:00

7.6 KiB

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