mirror of
https://github.com/fluencelabs/musl
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ccc7b4c3a1
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.
18 lines
410 B
C
18 lines
410 B
C
#include <signal.h>
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#include <errno.h>
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#include <stdint.h>
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#include "syscall.h"
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#include "pthread_impl.h"
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int raise(int sig)
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{
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int pid, tid, ret;
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sigset_t set;
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__syscall(SYS_rt_sigprocmask, SIG_BLOCK, SIGALL_SET, &set, _NSIG/8);
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tid = syscall(SYS_gettid);
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pid = syscall(SYS_getpid);
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ret = syscall(SYS_tgkill, pid, tid, sig);
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__syscall(SYS_rt_sigprocmask, SIG_SETMASK, &set, 0, _NSIG/8);
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return ret;
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}
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