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cfa3f5c19d0de03384ff3f1a3b884149626db07b
[musl]
/
src
/
signal
/
sigaltstack.c
1
#include <signal.h>
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#include <errno.h>
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#include "syscall.h"
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int sigaltstack(const stack_t *restrict ss, stack_t *restrict old)
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{
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if (ss) {
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if (ss->ss_size < MINSIGSTKSZ) {
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errno = ENOMEM;
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return -1;
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}
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if (ss->ss_flags & SS_ONSTACK) {
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errno = EINVAL;
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return -1;
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}
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}
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return syscall(SYS_sigaltstack, ss, old);
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}