Return to gettty.c CVS log

Up to [Research Unix] / researchv9 / cmd / ps

Annotation of researchv9/cmd/ps/gettty.c, revision 1.1

1.1     ! root        1: #include "ps.h"
        !             2: 
        !             3: char *
        !             4: lookdir(node)
        !             5: register node;
        !             6: {
        !             7:        register Dirnode *np;
        !             8:        register struct direct *dp;
        !             9:        if (node)
        !            10:                for (np = devlist; np; np = np->next)
        !            11:                        for (dp = np->begin; dp < np->end; dp++)
        !            12:                                if (dp->d_ino == node)
        !            13:                                        return dp->d_name;
        !            14:        return 0;
        !            15: }
        !            16: 
        !            17: char *
        !            18: gettty(node)
        !            19: {
        !            20:        register char *nm = lookdir(node);
        !            21:        if (nm == 0)
        !            22:                return "?";
        !            23:        if (nm[0] == 't' && nm[1] == 't' && nm[2] == 'y')
        !            24:                nm += 3;
        !            25:        return nm;
        !            26: }
        !            27: 
        !            28: Dirnode *
        !            29: getdir(dirname, list)
        !            30: char *dirname; Dirnode *list;
        !            31: {
        !            32:        struct stat sbuf;
        !            33:        register fd, n;
        !            34:        register Dirnode *np; register struct direct *dp;
        !            35: 
        !            36:        if ((fd = open(dirname, 0)) < 0)
        !            37:                return 0;
        !            38:        if (fstat(fd, &sbuf) < 0 || (np = Malloc(Dirnode, 1)) == 0) {
        !            39:                close(fd); return 0;
        !            40:        }
        !            41:        n = sbuf.st_size/sizeof(struct direct);
        !            42:        if ((dp = Malloc(struct direct, n)) == 0) {
        !            43:                free(np); close(fd); return 0;
        !            44:        }
        !            45:        if (!Read(fd, dp, sbuf.st_size)) {
        !            46:                free(np); free(dp); close(fd); return 0;
        !            47:        }
        !            48:        np->next = list;
        !            49:        np->begin = dp;
        !            50:        np->end = dp + n;
        !            51:        close(fd);
        !            52:        return np;
        !            53: }

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