diff options
author | Lennart Poettering <lennart@poettering.net> | 2018-04-27 14:09:31 +0200 |
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committer | Sven Eden <yamakuzure@gmx.net> | 2018-08-24 16:47:08 +0200 |
commit | 94062cd7c9680c5e9870f4352fcd5f0db2e51dfd (patch) | |
tree | 5485ca50514dcf5f3efa5e73cfaf1c3be771afb7 /src/basic/random-util.c | |
parent | 338c3c3619a265a1928184d9e8dfdf5219537b66 (diff) |
tree-wide: be more careful with the type of array sizes
Previously we were a bit sloppy with the index and size types of arrays,
we'd regularly use unsigned. While I don't think this ever resulted in
real issues I think we should be more careful there and follow a
stricter regime: unless there's a strong reason not to use size_t for
array sizes and indexes, size_t it should be. Any allocations we do
ultimately will use size_t anyway, and converting forth and back between
unsigned and size_t will always be a source of problems.
Note that on 32bit machines "unsigned" and "size_t" are equivalent, and
on 64bit machines our arrays shouldn't grow that large anyway, and if
they do we have a problem, however that kind of overly large allocation
we have protections for usually, but for overflows we do not have that
so much, hence let's add it.
So yeah, it's a story of the current code being already "good enough",
but I think some extra type hygiene is better.
This patch tries to be comprehensive, but it probably isn't and I missed
a few cases. But I guess we can cover that later as we notice it. Among
smaller fixes, this changes:
1. strv_length()' return type becomes size_t
2. the unit file changes array size becomes size_t
3. DNS answer and query array sizes become size_t
Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=76745
Diffstat (limited to 'src/basic/random-util.c')
-rw-r--r-- | src/basic/random-util.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/basic/random-util.c b/src/basic/random-util.c index fe283050c..3205bca6f 100644 --- a/src/basic/random-util.c +++ b/src/basic/random-util.c @@ -35,7 +35,7 @@ int acquire_random_bytes(void *p, size_t n, bool high_quality_required) { static int have_syscall = -1; _cleanup_close_ int fd = -1; - unsigned already_done = 0; + size_t already_done = 0; int r; /* Gathers some randomness from the kernel. This call will never block. If |