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f9a6372a98
the linux documentation for dup2 says it can fail with EBUSY due to a race condition with open and dup in the kernel. shield applications (and the rest of libc) from this nonsense by looping until it succeeds
11 lines
178 B
C
11 lines
178 B
C
#include <unistd.h>
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#include <errno.h>
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#include "syscall.h"
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int dup2(int old, int new)
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{
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int r;
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while ((r=__syscall(SYS_dup2, old, new))==-EBUSY);
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return __syscall_ret(r);
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}
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