This is the io_getevents equivalent of ppoll/pselect and allows to properly mix signals and aio completions (especially with IOCB_CMD_POLL) and atomically executes the following sequence: sigset_t origmask; pthread_sigmask(SIG_SETMASK, &sigmask, &origmask); ret = io_getevents(ctx, min_nr, nr, events, timeout); pthread_sigmask(SIG_SETMASK, &origmask, NULL); Note that unlike many other signal related calls we do not pass a sigmask size, as that would get us to 7 arguments, which aren't easily supported by the syscall infrastructure. It seems a lot less painful to just add a new syscall variant in the unlikely case we're going to increase the sigset size.
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| @@ -732,9 +732,11 @@ __SYSCALL(__NR_pkey_alloc, sys_pkey_alloc) · 731 unmodified lines | ||
| 732 | 732 | __SYSCALL(__NR_pkey_free, sys_pkey_free) |
| 733 | 733 | #define __NR_statx 291 |
| 734 | 734 | __SYSCALL(__NR_statx, sys_statx) |
| 735 | +#define __NR_io_pgetevents 292 | |
| 736 | +__SC_COMP(__NR_io_pgetevents, sys_io_pgetevents, compat_sys_io_pgetevents) | |
| 735 | 737 | |
| 736 | 738 | #undef __NR_syscalls |
| 737 | −#define __NR_syscalls 292 | |
| 739 | +#define __NR_syscalls 293 | |
| 738 | 740 | |
| 739 | 741 | /* |
| 740 | 742 | * 32 bit systems traditionally used different |
| @@ -29,6 +29,7 @@ · 28 unmodified lines | ||
| 29 | 29 | |
| 30 | 30 | #include <linux/types.h> |
| 31 | 31 | #include <linux/fs.h> |
| 32 | +#include <linux/signal.h> | |
| 32 | 33 | #include <asm/byteorder.h> |
| 33 | 34 | |
| 34 | 35 | typedef __kernel_ulong_t aio_context_t; |
| @@ -108,5 +109,10 @@ struct iocb { · 73 unmodified lines | ||
| 108 | 109 | #undef IFBIG |
| 109 | 110 | #undef IFLITTLE |
| 110 | 111 | |
| 112 | +struct __aio_sigset { | |
| 113 | + sigset_t __user *sigmask; | |
| 114 | + size_t sigsetsize; | |
| 115 | +}; | |
| 116 | + | |
| 111 | 117 | #endif /* __LINUX__AIO_ABI_H */ |
| 112 | 118 | |