7 commits

Author	SHA1	Message	Date
Andreas Kling	fc4eae87f8	LibC: Don't honor LIBC_* malloc debugging flags in AT_SECURE context ... Just ignore all these environment flags if the AT_SECURE flag is set in the program's auxiliary vector. This prevents a user from tricking set-uid programs into dumping debug information via environment flags.	2021-01-31 14:37:21 +01:00
Andreas Kling	b0f19c2af4	LibC: Templatize unique filename enumeration for mkstemp() et al ... This allows us to implement mkstemp() with open() directly, instead of first lstat()'ing, and then open()'ing the filename. Also implement tmpfile() in terms of mkstemp() instead of mktemp().	2021-01-22 19:39:44 +01:00
Ben Wiederhake	ab07a713bf	LibC: Implement uniform random sampling without modulo bias	2021-01-20 19:19:34 +01:00
Linus Groh	b42f0b9650	LibC: Change a couple of ASSERT_NOT_REACHED() to TODO() ... Just for semantic correctness and better visibility of those unimplemented stub functions.	2021-01-17 08:43:46 +01:00
Ben Wiederhake	5dc29065e1	LibC: Avoid silent truncation after overlong realpath ... The realpath syscall can attempt to return arbitrarily long paths, in particular paths that are longer than PATH_MAX. The only way to detect this case is checking whether 'rc', the true length of the returned path including NUL byte, exceeds our buffer length. In such a case, the buffer contains invalid data. All Serenity code calls LibC's realpath() with a nullptr buffer, meaning that realpath is supposed to allocate memory on its own. All Serenity code can handle arbitrarily long paths returned by LibC's realpath, so it is safe to "do the dance" and repeat the syscall with a new buffer. Ports are likely to be graceful in this regard, too. If a Port calls realpath() with a pre-allocated buffer, however, there is nothing better we can do than return a truncated buffer.	2021-01-16 22:40:53 +01:00
Ben Wiederhake	ed857bc06e	LibC: Fix memory leak in realpath	2021-01-16 22:40:53 +01:00
Andreas Kling	13d7c09125	Libraries: Move to Userland/Libraries/	2021-01-12 12:17:46 +01:00

Renamed from Libraries/LibC/stdlib.cpp (Browse further)