serval-dna/nacl/nacl-20110221/curvecp/open_read.c

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#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include "open.h"
int open_read(const char *fn)
{
#ifdef O_CLOEXEC
return open(fn,O_RDONLY | O_NONBLOCK | O_CLOEXEC);
#else
int fd = open(fn,O_RDONLY | O_NONBLOCK);
if (fd == -1) return -1;
fcntl(fd,F_SETFD,1);
return fd;
#endif
}