Avoid infinite loop if read() fails consistently.

PR: misc/7926 Submitted by: Sergey Potapov <sp@alkor.ru>
1998-09-16 15:53:25 +00:00 · 1998-09-16 15:53:25 +00:00 · d26060f2e6
parent 83e2676ff1
commit d26060f2e6
1 changed files with 1 additions and 1 deletions
--- a/usr.bin/cksum/crc32.c
+++ b/usr.bin/cksum/crc32.c
@ -103,7 +103,7 @@ crc32(fd, cval, clen)
 	
    len = 0 ;
    crc32_total = ~crc32_total ;
-    while ((nr = read(fd, buf, sizeof(buf))))
+    while ((nr = read(fd, buf, sizeof(buf))) > 0)
        for (len += nr, p = buf; nr--; ++p) {
 	    CRC(crc, *p) ;
 	    CRC(crc32_total, *p) ;