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 seq_buf_init_append() (to start a seq_buf from an existing string buffer). And while implementing that, we found a bunch of other related things that needed fixing. This is that series, with tests for each fix.
v1: https://lore.kernel.org/all/[email protected]/ v2: - seq_buf_do_printk() simplification and more tests - add seq_buf_init_append() and tests[1] - finish documenting seq_buf[1] and link it to kernel api docs - test improvements throughout -Kees [1] https://lore.kernel.org/all/[email protected]/ Bill Wendling (1): seq_buf: Add seq_buf_init_append() Kees Cook (8): seq_buf: Do not print an empty line from an overflowed seq_buf_do_printk() 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() powerpc/papr_scm: Return the string length from the sysfs show functions nvdimm: ndtest: Return the string length from flags_show() docs: core-api: Document the seq_buf API Documentation/core-api/kernel-api.rst | 9 + include/linux/seq_buf.h | 103 ++++- include/linux/trace_seq.h | 5 +- arch/powerpc/platforms/pseries/papr_scm.c | 4 +- lib/seq_buf.c | 35 +- lib/tests/seq_buf_kunit.c | 471 +++++++++++++++++++++- tools/testing/nvdimm/test/ndtest.c | 2 +- 7 files changed, 607 insertions(+), 22 deletions(-) -- 2.34.1
