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Annotation of coherent/b/lib/libc/sys/i386/dup2.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * libc/sys/i386/dup2.c
                      3:  * Copyright (c) Bureau d'Etudes Ciaran O'Donnell,1987,1990,1991.
                      4:  */
                      5: 
                      6: #include <sys/types.h>
                      7: #include <sys/stat.h>
                      8: #include <errno.h>
                      9: #include <fcntl.h>
                     10: 
                     11: int
                     12: dup2(fd1, fd2) register int fd1, fd2;
                     13: {
                     14:        register int save;
                     15:        struct stat statb;
                     16: 
                     17:        save = errno;
                     18:        if (fstat(fd1, &statb)<0) {
                     19:                errno = EBADF;
                     20:                return -1;
                     21:        }
                     22:        if (fd1==fd2)
                     23:                return fd1;
                     24:        close(fd2);
                     25:        errno = save;
                     26:        return fcntl(fd1, F_DUPFD, fd2);
                     27: }
                     28: 
                     29: /* end of libc/sys/i386/dup2.c */

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