zfs/cmd/zdb
Richard Yao 2e08df84d8 Cleanup dump_bookmarks()
Assertions are meant to check assumptions, but the way that this
assertion is written does not check an assumption, since it is provably
always true. Removing the assertion will cause a compiler warning (made
into an error by -Werror) about printing up to 512 bytes to a 256-byte
buffer, so instead, we change the assertion to verify the assumption
that we never do a snprintf() that is truncated to avoid overrunning the
256-byte buffer.

This was caught by an audit of the codebase to look for misuse of
`snprintf()` after CodeQL reported that we had misused `snprintf()`. An
explanation of how snprintf() can be misused is here:

https://www.redhat.com/en/blog/trouble-snprintf

This particular instance did not misuse `snprintf()`, but it was caught
by the audit anyway.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Closes #14098
2022-10-29 13:05:02 -07:00
..
Makefile.am autoconf: use include directives instead of recursing down cmd 2022-05-10 10:18:38 -07:00
zdb.c Cleanup dump_bookmarks() 2022-10-29 13:05:02 -07:00
zdb.h Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zdb_il.c zfs_rename: support RENAME_* flags 2022-10-28 09:49:20 -07:00