BSD 4_1_snap release

[unix-history] / usr / src / libc / stdio / fdopen.c

diff --git a/usr/src/libc/stdio/fdopen.c b/usr/src/libc/stdio/fdopen.c
index d47ad5f..7ebf10b 100644 (file)
--- a/usr/src/libc/stdio/fdopen.c
+++ b/usr/src/libc/stdio/fdopen.c
@@ -1,3 +1,4 @@
+/* @(#)fdopen.c        4.2 (Berkeley) 3/9/81 */

 /*
  * Unix routine to do an "fopen" on file descriptor
  * The mode has to be repeated because you can't query its
 /*
  * Unix routine to do an "fopen" on file descriptor
  * The mode has to be repeated because you can't query its


@@ -15,7 +16,7 @@ register char *mode;
        register FILE *iop;
        extern FILE *_lastbuf;
 
        register FILE *iop;
        extern FILE *_lastbuf;
 

-       for (iop = _iob; iop->_flag&(_IOREAD|_IOWRT); iop++)
+       for (iop = _iob; iop->_flag&(_IOREAD|_IOWRT|_IORW); iop++)

                if (iop >= _lastbuf)
                        return(NULL);
        iop->_cnt = 0;
                if (iop >= _lastbuf)
                        return(NULL);
        iop->_cnt = 0;


@@ -26,5 +27,9 @@ register char *mode;
                        lseek(fd, 0L, 2);
        } else
                iop->_flag |= _IOREAD;
                        lseek(fd, 0L, 2);
        } else
                iop->_flag |= _IOREAD;

+       if (mode[1] == '+') {
+               iop->_flag &= ~(_IOREAD|_IOWRT);
+               iop->_flag |= _IORW;
+       }

        return(iop);
 }
        return(iop);
 }