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musl - an implementation of the standard library for Linux-based systems
7f3a292536
The code intends for the sem_post() in line 97 (now 98) to only unblock target threads waiting on line 29. But after the first thread is released, the next sem_post() might also unblock a thread waiting on line 36. That would cause the thread to return to the execution of user code before all threads are done, leading to user code being executed in a mixed-credentials environment. What's more, if this happens more than once, then the mass release on line 110 (now line 111) will cause multiple threads to execute the callback at the same time, and the callbacks are currently not written to cope with that situation. Adding another semaphore allows the caller to say explicitly which threads it wants to release. |
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| dist | ||
| include | ||
| ldso | ||
| src | ||
| tools | ||
| .gitignore | ||
| .mailmap | ||
| configure | ||
| COPYRIGHT | ||
| dynamic.list | ||
| INSTALL | ||
| Makefile | ||
| README | ||
| VERSION | ||
| WHATSNEW | ||
musl libc
musl, pronounced like the word "mussel", is an MIT-licensed
implementation of the standard C library targetting the Linux syscall
API, suitable for use in a wide range of deployment environments. musl
offers efficient static and dynamic linking support, lightweight code
and low runtime overhead, strong fail-safe guarantees under correct
usage, and correctness in the sense of standards conformance and
safety. musl is built on the principle that these goals are best
achieved through simple code that is easy to understand and maintain.
The 1.1 release series for musl features coverage for all interfaces
defined in ISO C99 and POSIX 2008 base, along with a number of
non-standardized interfaces for compatibility with Linux, BSD, and
glibc functionality.
For basic installation instructions, see the included INSTALL file.
Information on full musl-targeted compiler toolchains, system
bootstrapping, and Linux distributions built on musl can be found on
the project website:
http://www.musl-libc.org/