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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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4b39d33437
check_preadv2_pwritev2.c: In function ‘main’:
check_preadv2_pwritev2.c:12:12: error: ‘__NR_preadv2’ undeclared (first use in this function)
syscall(__NR_preadv2, 0, NULL, 0, 0, 0);
^
check_preadv2_pwritev2.c:12:12: note: each undeclared identifier is reported only once for each function it appears in
check_preadv2_pwritev2.c:15:12: error: ‘__NR_pwritev2’ undeclared (first use in this function)
syscall(__NR_pwritev2, 0, NULL, 0, 0, 0);
28 lines
520 B
C
28 lines
520 B
C
#include <sys/syscall.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stddef.h>
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int main(int argc, char **argv)
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{
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int has_preadv2 = 0;
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int has_pwritev2 = 0;
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#if defined(__NR_preadv2)
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errno = 0;
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syscall(__NR_preadv2, 0, NULL, 0, 0, 0);
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has_preadv2 = errno != ENOSYS;
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#else
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has_preadv2 = 0;
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#endif
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#if defined(__NR_pwritev2)
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errno = 0;
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syscall(__NR_pwritev2, 0, NULL, 0, 0, 0);
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has_pwritev2 = errno != ENOSYS;
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#else
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has_pwritev2 = 0;
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#endif
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return !(has_preadv2 && has_pwritev2);
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}
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