riscv/musl - musl - Gitea: Git with a cup of tea

Author	SHA1	Message	Date
Rich Felker	a8799356d5	base system() on posix_spawn this avoids duplicating the fragile logic for executing an external program without fork.	13 years ago
Rich Felker	76f28cfce5	system is a cancellation point ideally, system would also be cancellable while running the external command, but I cannot find any way to make that work without either leaking zombie processes or introducing behavior that is far outside what the standard specifies. glibc handles cancellation by killing the child process with SIGKILL, but this could be unsafe in that it could leave the data being manipulated by the command in an inconsistent state.	14 years ago
Rich Felker	599f973603	fix usage of locks with vfork __release_ptc() is only valid in the parent; if it's performed in the child, the lock will be unlocked early then double-unlocked later, corrupting the lock state.	14 years ago
Rich Felker	44eb4d8b9b	overhaul system() and popen() to use vfork; fix various related bugs since we target systems without overcommit, special care should be taken that system() and popen(), like posix_spawn(), do not fail in processes whose commit charges are too high to allow ordinary forking. this in turn requires special precautions to ensure that the parent process's signal handlers do not end up running in the shared-memory child, where they could corrupt the state of the parent process. popen has also been updated to use pipe2, so it does not have a fd-leak race in multi-threaded programs. since pipe2 is missing on older kernels, (non-atomic) emulation has been added. some silly bugs in the old code should be gone too.	14 years ago
Rich Felker	0b44a0315b	initial check-in, version 0.5.0	15 years ago