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* alloca: add an overflow check tooLennart Poettering2018-08-24
| | | | | | | | | Of course, alloca() shouldn't be used with anything that can grow without bounds anyway, but let's better safe than sorry, and catch this early. Since alloca() is not supposed to return an error we trigger an assert() instead, which is still better than heap trickery.
* tree-wide: drop license boilerplateZbigniew Jędrzejewski-Szmek2018-08-24
| | | | | | | | | | Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
* macro: introduce TAKE_PTR() macroLennart Poettering2018-08-24
| | | | | | | | | | | | | | | | This macro will read a pointer of any type, return it, and set the pointer to NULL. This is useful as an explicit concept of passing ownership of a memory area between pointers. This takes inspiration from Rust: https://doc.rust-lang.org/std/option/enum.Option.html#method.take and was suggested by Alan Jenkins (@sourcejedi). It drops ~160 lines of code from our codebase, which makes me like it. Also, I think it clarifies passing of ownership, and thus helps readability a bit (at least for the initiated who know the new macro)
* tree-wide: use reallocarray instead of our home-grown realloc_multiply (#8279)Zbigniew Jędrzejewski-Szmek2018-05-30
| | | | | | | | There isn't much difference, but in general we prefer to use the standard functions. glibc provides reallocarray since version 2.26. I moved explicit_bzero is configure test to the bottom, so that the two stdlib functions are at the bottom.
* Prep v236 : Add missing SPDX-License-Identifier (2/9) src/basicSven Eden2018-03-26
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* alloc-util: coding style fixYu Watanabe2017-11-28
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* alloc-util: add new helpers memdup_suffix0() and newdup_suffix0()Lennart Poettering2017-07-20
| | | | | | | These are similar to memdup() and newdup(), but reserve one extra NUL byte at the end of the new allocation and initialize it. It's useful when copying out data from fixed size character arrays where NUL termination can't be assumed.
* tree-wide: introduce free_and_replace helperZbigniew Jędrzejewski-Szmek2017-07-05
| | | | | | It's a common pattern, so add a helper for it. A macro is necessary because a function that takes a pointer to a pointer would be type specific, similarly to cleanup functions. Seems better to use a macro.
* alloc-util: cleanupsAlexander Kuleshov2017-06-16
| | | | | | | | | | | | | | | This patch contains a set of little cleanups for alloc-util.h: 1. The malloc_multiply(), realloc_multiply() and memdup_multiply() functions check allocation related parameters on overflow. Let's move them to the separate size_multiply_overflow() function for simplicity, code duplication prevention and possible reuse in future. 2. use SIZE_MAX from stdlib instead of ((size_t) - 1) to be more clear. 3. The 'a'/'b' variables are renamed to 'size' and 'need' to be more clear.'
* tree-wide: remove Emacs lines from all filesDaniel Mack2017-05-17
| | | | | This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.
* basic: include only what we useThomas Hindoe Paaboel Andersen2017-05-17
| | | | | This is a cleaned up result of running iwyu but without forward declarations on src/basic.
* Prep v228: Add remaining updates from upstream (1/3)Sven Eden2017-04-26
The util.[hc] files have been stripped of a lot of functions, that got sorted into various new files representing the type of utility. This commit adds the missing files.
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