[PATCH 0/6] Changes to fssum to support POSIX

[Arvind Raghavan <raghavan.arvind@gmail.com>]

This patch series modifies fssum to be able to verify POSIX
fsync/fdatasync guarantees. In particular, it allows single
files/symlinks to be passed as input, which allows us to verify
an fsync on a single file without checking the entire directory.

It also adds an option for non-recursive directory traversal,
which is useful because POSIX fsync doesn't guarantee that all
subdirectories are synced. Finally, it adds a flag that allows
file size to be ignored (currently enabled by default). This is
useful because POSIX fsync of a directory doesn't guarantee that
the data in the children is persisted.

These changes will be followed up with several Crashmonkey [1]
tests which make use of these changes.

[1] https://github.com/utsaslab/crashmonkey

Arvind Raghavan (6):
  src/fssum: Make sum_file_data global
  src/fssum: Refactor recursive traversal
  src/fssum: Add flag -R for non-recursive mode
  src/fssum: Add a flag for including file size in checksum
  src/fssum: Allow single file input
  src/fssum: Fix whitespace in usage

 src/fssum.c | 364 ++++++++++++++++++++++++++++++----------------------
 1 file changed, 213 insertions(+), 151 deletions(-)

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2.20.1