[PATCH 0/7] seq_buf: Add seq_buf_strlen()

[Kees Cook <kees@kernel.org>]

Hi,

While working on seq_buf conversions, we found there was a need for
seq_buf_strlen() (since calling strlen(seq_buf_str()) would be a waste
of time: seq_buf already knows the length). And while implementing that,
I found a bunch of other related things that needed fixing. This is that
series, with tests for each fix.

-Kees

Kees Cook (7):
  seq_buf: Do not pop from an overflowed seq_buf
  seq_buf: Copy what fits when seq_buf_puts() and seq_buf_putmem()
    overflow
  seq_buf: Clear what a writer did not claim when a seq_buf overflows
  seq_buf: Add seq_buf_strlen()
  seq_buf: Use seq_buf_strlen() for the string end in
    seq_buf_do_printk()
  powerpc/papr_scm: Return the string length from the sysfs show
    functions
  nvdimm: ndtest: Return the string length from flags_show()

 include/linux/seq_buf.h                   |  69 ++++-
 include/linux/trace_seq.h                 |   4 +-
 arch/powerpc/platforms/pseries/papr_scm.c |   4 +-
 lib/seq_buf.c                             |  25 +-
 lib/tests/seq_buf_kunit.c                 | 290 +++++++++++++++++++++-
 tools/testing/nvdimm/test/ndtest.c        |   2 +-
 6 files changed, 377 insertions(+), 17 deletions(-)

-- 
2.34.1