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Annotation of 42BSD/usr.lib/libU77/link_.c, revision 1.1

1.1     ! root        1: /*
        !             2: char id_link[] = "@(#)link_.c  1.2";
        !             3:  *
        !             4:  * make a link to an existing file
        !             5:  *
        !             6:  * calling sequence:
        !             7:  *     ierror = link(name1, name2)
        !             8:  * where:
        !             9:  *     name1 is the pathname of an existing file
        !            10:  *     name2 is a pathname to be linked to file name1
        !            11:  *     ierror will be 0 if successful; a system error code otherwise.
        !            12:  */
        !            13: 
        !            14: #include "../libI77/f_errno.h"
        !            15: #include <sys/param.h>
        !            16: #ifndef        MAXPATHLEN
        !            17: #define MAXPATHLEN     128
        !            18: #endif
        !            19: 
        !            20: long link_(name1, name2, n1len, n2len)
        !            21: char *name1, *name2;
        !            22: long n1len, n2len;
        !            23: {
        !            24:        char buf1[MAXPATHLEN];
        !            25:        char buf2[MAXPATHLEN];
        !            26: 
        !            27:        if (n1len >= sizeof buf1 || n2len >= sizeof buf2)
        !            28:                return((long)(errno=F_ERARG));
        !            29:        g_char(name1, n1len, buf1);
        !            30:        g_char(name2, n2len, buf2);
        !            31:        if (buf1[0] == '\0' || buf2[0] == '\0')
        !            32:                return((long)(errno=F_ERARG));
        !            33:        if (link(buf1, buf2) != 0)
        !            34:                return((long)errno);
        !            35:        return(0L);
        !            36: }

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