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path: root/src/linux/ppoll.c
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2019-07-28pselect, ppoll: add time64 syscall support, decouple 32-bit time_tRich Felker1-1/+17
time64 syscall is used only if it's the only one defined for the arch, or if the requested timeout length does not fit in 32 bits. on current 32-bit archs where time_t is a 32-bit type, this makes it statically unreachable. on 64-bit archs, there are only superficial changes to the code after preprocessing. both before and after these changes, these functions copied their timeout arguments to avoid letting the kernel clobber the caller's copies. now, the copying also serves to change the type from userspace timespec to a pair of longs, which makes a difference only in the 32-bit fallback case, not on 64-bit.
2013-03-26remove __SYSCALL_SSLEN arch macro in favor of using public _NSIGRich Felker1-1/+2
the issue at hand is that many syscalls require as an argument the kernel-ABI size of sigset_t, intended to allow the kernel to switch to a larger sigset_t in the future. previously, each arch was defining this size in syscall_arch.h, which was redundant with the definition of _NSIG in bits/signal.h. as it's used in some not-quite-portable application code as well, _NSIG is much more likely to be recognized and understood immediately by someone reading the code, and it's also shorter and less cluttered. note that _NSIG is actually 65/129, not 64/128, but the division takes care of throwing away the off-by-one part.
2012-09-10fix another ppoll issue (missing sigset_t size argument)Rich Felker1-1/+1
2012-09-10fix ppoll with null timeout argumentRich Felker1-2/+2
2012-09-09add linux ppoll syscall wrapperRich Felker1-0/+9