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Annotation of researchv10no/cmd/asd++/mkspool.c, revision 1.1

1.1     ! root        1: #include "decl.h"
        !             2: #include <pwd.h>
        !             3: 
        !             4: /*
        !             5:  *     mkspool() -- ensure the proper spool directories exist
        !             6:  *     with the proper modes and ownerships.  This program should
        !             7:  *     be run setuid to root.
        !             8:  */
        !             9: 
        !            10: static const int dirmode = 0755;
        !            11: 
        !            12: struct ugid {
        !            13:        int uid, gid;
        !            14:        ugid (String&);
        !            15:        ~ugid();
        !            16: };
        !            17: 
        !            18: ugid::
        !            19: ugid (String& s)
        !            20: {
        !            21:        char* cp = new char[s.length() + 1];
        !            22:        s.dump (cp);
        !            23:        struct passwd *pw = getpwnam (cp);
        !            24:        delete cp;
        !            25:        if (!pw) {
        !            26:                cerr << "mkspool: cannot recognize logname " << s << "\n";
        !            27:                exit (1);
        !            28:        }
        !            29:        uid = pw->pw_uid;
        !            30:        gid = pw->pw_gid;
        !            31: }
        !            32: 
        !            33: ugid::
        !            34: ~ugid()
        !            35: {
        !            36:        endpwent();
        !            37: }
        !            38: 
        !            39: static void
        !            40: forcedir (Path& dir, String& uname)
        !            41: {
        !            42:        ugid u (uname);
        !            43: 
        !            44:        if (access (dir, 0) == 0) {
        !            45:                if (!isdir (dir)) {
        !            46:                        cerr << "mkspool: "
        !            47:                                << dir << " exists and is not a directory\n";
        !            48:                        exit (1);
        !            49:                }
        !            50:                chmod (dir, dirmode);
        !            51:        } else
        !            52:                mkdir (dir, dirmode);
        !            53:        chown (dir, u.uid, u.gid);
        !            54: }
        !            55: 
        !            56: main()
        !            57: {
        !            58:        String l = logname();
        !            59:        forcedir (spooldir, "root");
        !            60:        lock (spooldir);
        !            61:        Path mydir = spooldir & l;
        !            62:        forcedir (mydir, l);
        !            63:        close (creat (mydir & "dummy", 0444));
        !            64:        unlock (spooldir);
        !            65:        cout << mydir << "\n";
        !            66:        return 0;
        !            67: }

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