Date: Wed, 31 Jan 1996 07:51:31 +1100 From: Bruce Evans <bde@zeta.org.au> To: current@freebsd.org, dyson@freebsd.org Subject: new pipes fail several tests #1 Message-ID: <199601302051.HAA25491@godzilla.zeta.org.au>
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The Minix test programs found several bugs in the new pipe code. #1: read() doesn't return -1/EAGAIN for EOF in non-blocking mode. See POSIX.1-1990 6.4.1.2(2). Bruce #include <sys/types.h> #include <assert.h> #include <errno.h> #include <fcntl.h> #include <stdio.h> #include <unistd.h> #define check(what, expected) assert((what, expected)) int main(void) { char buf[1]; int fd[2]; int r; r = pipe(fd); check("pipe", r == 0); r = fcntl(fd[0], F_SETFL, O_NONBLOCK); check("fcntl", r == 0); r = read(fd[0], buf, 1); printf("read %d bytes, errno = %d\n", r, errno); check("read", r == -1); check("read", errno == EAGAIN); return 0; }
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