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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/basic/mkdir.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/basic/mkdir.c')
| -rw-r--r-- | src/basic/mkdir.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/basic/mkdir.c b/src/basic/mkdir.c index 60d08a9493..bd9cb76ddf 100644 --- a/src/basic/mkdir.c +++ b/src/basic/mkdir.c @@ -126,7 +126,7 @@ int mkdir_parents_internal(const char *prefix, const char *path, mode_t mode, ui assert(*e == '/'); /* drop the last component */ - path = strndupa(path, e - path); + path = strndupa_safe(path, e - path); r = is_dir(path, true); if (r > 0) return 0; |