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Annotation of researchv10no/netfs/libnetb/gread.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * gather data that may come in dribs and drabs:
                      3:  * read size bytes into buf,
                      4:  * but keep looking until at least minsize have arrived
                      5:  */
                      6: #include <errno.h>     /* just for EINTR */
                      7: 
                      8: int
                      9: _rfgread(fd, buf, size, minsize)
                     10: int fd;
                     11: char *buf;
                     12: int size;
                     13: register int minsize;
                     14: {
                     15:        register int n, tot;
                     16:        extern int errno;
                     17: 
                     18:        tot = 0;
                     19:        while (minsize > 0) {
                     20:                if ((n = read(fd, buf, size)) <= 0) {
                     21:                        if (errno == EINTR)
                     22:                                continue;
                     23:                        break;
                     24:                }
                     25:                buf += n;
                     26:                size -= n;
                     27:                minsize -= n;
                     28:                tot += n;
                     29:        }
                     30:        if (tot)
                     31:                return (tot);
                     32:        return (n);
                     33: }

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