1 /* $OpenBSD: pread.c,v 1.2 2003/07/31 21:48:09 deraadt Exp $ */
3 * Written by Artur Grabowski <art@openbsd.org> 2002 Public Domain.
12 main(int argc, char *argv[])
14 char temp[] = "/tmp/dup2XXXXXXXXX";
15 const char magic[10] = "0123456789";
19 if ((fd = mkstemp(temp)) < 0)
23 if (write(fd, magic, sizeof(magic)) != sizeof(magic))
26 if (lseek(fd, 0, SEEK_SET) != 0)
29 if (read(fd, &c, 1) != 1)
33 errx(1, "read1 %c != %c", c, magic[0]);
35 if (pread(fd, &c, 1, 7) != 1)
39 errx(1, "pread %c != %c", c, magic[7]);
41 if (read(fd, &c, 1) != 1)
45 errx(1, "read2 %c != %c", c, magic[1]);