systemd/coccinelle/strdupa.cocci

/* SPDX-License-Identifier: LGPL-2.1-or-later */
@@
expression x;
@@
- strdupa(x)
+ strdupa_safe(x)
@@
expression x, n;
@@
- strndupa(x, n)
+ strndupa_safe(x, n)
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. 2021-10-13 18:38:37 +08:00			`/* SPDX-License-Identifier: LGPL-2.1-or-later */`
			`@@`
			`expression x;`
			`@@`
			`- strdupa(x)`
			`+ strdupa_safe(x)`
			`@@`
			`expression x, n;`
			`@@`
			`- strndupa(x, n)`
			`+ strndupa_safe(x, n)`