Return to x_cp.c CVS log

Up to [XINU] / xinu / sys / shell

Annotation of xinu/sys/shell/x_cp.c, revision 1.1

1.1     ! root        1: /* x_cp.c - x_cp */
        !             2: 
        !             3: #include <conf.h>
        !             4: #include <kernel.h>
        !             5: #include <shell.h>
        !             6: 
        !             7: LOCAL  char    errfmt[] = "Cannot open %s\n";
        !             8: 
        !             9: /*------------------------------------------------------------------------
        !            10:  *  x_cp  -  (copy command) copy one file to another
        !            11:  *------------------------------------------------------------------------
        !            12:  */
        !            13: COMMAND        x_cp(stdin, stdout, stderr, nargs, args)
        !            14: int    stdin, stdout, stderr, nargs;
        !            15: char   *args[];
        !            16: {
        !            17:        char    *buf;
        !            18:        int     from, to;
        !            19:        int     ret;
        !            20:        int     len;
        !            21: 
        !            22:        if (nargs != 3) {
        !            23:                fprintf(stderr, "usage: cp file1 file2\n");
        !            24:                return(SYSERR);
        !            25:        }
        !            26:        if ( (from=open(NAMESPACE, args[1], "ro")) == SYSERR) {
        !            27:                fprintf(stderr, errfmt, args[1]);
        !            28:                return(SYSERR);
        !            29:        }
        !            30:        if ( (to=open(NAMESPACE, args[2], "w")) == SYSERR) {
        !            31:                close(from);
        !            32:                fprintf(stderr, errfmt, args[2]);
        !            33:                return(SYSERR);
        !            34:        }
        !            35:        if ( ((int) (buf = (char *)getmem(512)) ) == SYSERR) {
        !            36:                fprintf(stderr, "no memory\n");
        !            37:                ret = SYSERR;
        !            38:        } else {
        !            39:                while ( (len = read(from, buf, 512)) > 0 )
        !            40:                        write(to, buf, len);
        !            41:                freemem(buf, 512);
        !            42:                ret = OK;
        !            43:        }
        !            44:        close(from);
        !            45:        close(to);
        !            46:        return(ret);
        !            47: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.