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| author | Lennart Poettering <lennart@poettering.net> | 2021-10-13 12:38:37 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2021-10-14 15:57:52 +0200 |
| commit | 2f82562bad423d1190912a4b209647dfac966db2 (patch) | |
| tree | 766d61a085ee9674d8034351a83f64bcdf5d45bb /src/shared/uid-range.c | |
| parent | journal: drop unnecessary +1 in newa() expression (diff) | |
| download | systemd-2f82562bad423d1190912a4b209647dfac966db2.tar.xz systemd-2f82562bad423d1190912a4b209647dfac966db2.zip | |
alloc-util: add strdupa_safe() + strndupa_safe() and use it everywhere
Let's define two helpers strdupa_safe() + strndupa_safe() which do the
same as their non-safe counterparts, except that they abort if called
with allocations larger than ALLOCA_MAX.
This should ensure that all our alloca() based allocations are subject
to this limit.
afaics glibc offers three alloca() based APIs: alloca() itself,
strndupa() + strdupa(). With this we have now replacements for all of
them, that take the limit into account.
Diffstat (limited to 'src/shared/uid-range.c')
| -rw-r--r-- | src/shared/uid-range.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/shared/uid-range.c b/src/shared/uid-range.c index 5d5bf7f21d..2c07a1b7a8 100644 --- a/src/shared/uid-range.c +++ b/src/shared/uid-range.c @@ -114,7 +114,7 @@ int uid_range_add_str(UidRange **p, unsigned *n, const char *s) { char *b; uid_t end; - b = strndupa(s, t - s); + b = strndupa_safe(s, t - s); r = parse_uid(b, &start); if (r < 0) return r; |