torture/locktest.c

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/* 
   Unix SMB/CIFS implementation.
   randomised byte range lock tester
   Copyright (C) Andrew Tridgell 1999
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "includes.h"

static fstring password[2];
static fstring username[2];
static int got_user;
static int got_pass;
static BOOL use_kerberos;
static int numops = 1000;
static BOOL showall;
static BOOL analyze;
static BOOL hide_unlock_fails;
static BOOL use_oplocks;
static unsigned lock_range = 100;
static unsigned lock_base = 0;
static unsigned min_length = 0;
static BOOL exact_error_codes;
static BOOL zero_zero;

extern char *optarg;
extern int optind;

#define FILENAME "\\locktest.dat"

#define READ_PCT 50
#define LOCK_PCT 45
#define UNLOCK_PCT 70
#define RANGE_MULTIPLE 1
#define NSERVERS 2
#define NCONNECTIONS 2
#define NFILES 2
#define LOCK_TIMEOUT 0

#define NASTY_POSIX_LOCK_HACK 0

enum lock_op {OP_LOCK, OP_UNLOCK, OP_REOPEN};

static const char *lock_op_type(int op)
{
        if (op == WRITE_LOCK) return "write";
        else if (op == READ_LOCK) return "read";
        else return "other";
}

static const char *lock_op_name(enum lock_op op)
{
        if (op == OP_LOCK) return "lock";
        else if (op == OP_UNLOCK) return "unlock";
        else return "reopen";
}

struct record {
        enum lock_op lock_op;
        enum brl_type lock_type;
        char conn, f;
        SMB_BIG_UINT start, len;
        char needed;
};

#define PRESETS 0

#if PRESETS
static struct record preset[] = {
{OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 3, 0, 1},
{OP_UNLOCK, 0       , 0, 0, 2, 0, 1},
{OP_REOPEN, 0, 0, 0, 0, 0, 1},

{OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
{OP_LOCK, READ_LOCK, 0, 0, 1, 1, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
{OP_REOPEN, 0, 0, 0, 0, 0, 1},

{OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 3, 1, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
{OP_REOPEN, 0, 0, 0, 0, 0, 1},

{OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 1, 1, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
{OP_REOPEN, 0, 0, 0, 0, 0, 1},

{OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
{OP_LOCK, READ_LOCK, 0, 0, 1, 1, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
{OP_REOPEN, 0, 0, 0, 0, 0, 1},

{OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
{OP_LOCK, READ_LOCK, 0, 0, 3, 1, 1},
{OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
{OP_REOPEN, 0, 0, 0, 0, 0, 1},

};
#endif

static struct record *recorded;

static void print_brl(SMB_DEV_T dev,
                        SMB_INO_T ino,
                        struct process_id pid, 
                        enum brl_type lock_type,
                        enum brl_flavour lock_flav,
                        br_off start,
                        br_off size)
{
#if NASTY_POSIX_LOCK_HACK
        {
                pstring cmd;
                static SMB_INO_T lastino;

                if (lastino != ino) {
                        slprintf(cmd, sizeof(cmd), 
                                 "egrep POSIX.*%u /proc/locks", (int)ino);
                        system(cmd);
                }
                lastino = ino;
        }
#endif

        printf("%s   %05x:%05x    %s  %.0f:%.0f(%.0f)\n", 
               procid_str_static(&pid), (int)dev, (int)ino, 
               lock_type==READ_LOCK?"R":"W",
               (double)start, (double)start+size-1,(double)size);

}


static void show_locks(void)
{
        brl_forall(print_brl);
        /* system("cat /proc/locks"); */
}


/***************************************************** 
return a connection to a server
*******************************************************/
static struct cli_state *connect_one(char *share, int snum)
{
        struct cli_state *c;
        struct nmb_name called, calling;
        char *server_n;
        fstring server;
        struct in_addr ip;
        fstring myname;
        static int count;
        NTSTATUS status;

        fstrcpy(server,share+2);
        share = strchr_m(server,'\\');
        if (!share) return NULL;
        *share = 0;
        share++;

        server_n = server;
        
        zero_ip(&ip);

        slprintf(myname,sizeof(myname), "lock-%lu-%u", (unsigned long)getpid(), count++);

        make_nmb_name(&calling, myname, 0x0);
        make_nmb_name(&called , server, 0x20);

 again:
        zero_ip(&ip);

        /* have to open a new connection */
        if (!(c=cli_initialise())) {
                DEBUG(0,("Connection to %s failed\n", server_n));
                return NULL;
        }

        status = cli_connect(c, server_n, &ip);
        if (!NT_STATUS_IS_OK(status)) {
                DEBUG(0,("Connection to %s failed. Error %s\n", server_n, nt_errstr(status) ));
                return NULL;
        }

        c->use_kerberos = use_kerberos;

        if (!cli_session_request(c, &calling, &called)) {
                DEBUG(0,("session request to %s failed\n", called.name));
                cli_shutdown(c);
                if (strcmp(called.name, "*SMBSERVER")) {
                        make_nmb_name(&called , "*SMBSERVER", 0x20);
                        goto again;
                }
                return NULL;
        }

        DEBUG(4,(" session request ok\n"));

        if (!cli_negprot(c)) {
                DEBUG(0,("protocol negotiation failed\n"));
                cli_shutdown(c);
                return NULL;
        }

        if (!got_pass) {
                char *pass = getpass("Password: ");
                if (pass) {
                        fstrcpy(password[0], pass);
                        fstrcpy(password[1], pass);
                }
        }

        if (got_pass == 1) {
                fstrcpy(password[1], password[0]);
                fstrcpy(username[1], username[0]);
        }

        if (!NT_STATUS_IS_OK(cli_session_setup(c, username[snum], 
                                               password[snum],
                                               strlen(password[snum]),
                                               password[snum],
                                               strlen(password[snum]),
                                               lp_workgroup()))) {
                DEBUG(0,("session setup failed: %s\n", cli_errstr(c)));
                return NULL;
        }

        /*
         * These next two lines are needed to emulate
         * old client behaviour for people who have
         * scripts based on client output.
         * QUESTION ? Do we want to have a 'client compatibility
         * mode to turn these on/off ? JRA.
         */

        if (*c->server_domain || *c->server_os || *c->server_type)
                DEBUG(1,("Domain=[%s] OS=[%s] Server=[%s]\n",
                        c->server_domain,c->server_os,c->server_type));
        
        DEBUG(4,(" session setup ok\n"));

        if (!cli_send_tconX(c, share, "?????",
                            password[snum], strlen(password[snum])+1)) {
                DEBUG(0,("tree connect failed: %s\n", cli_errstr(c)));
                cli_shutdown(c);
                return NULL;
        }

        DEBUG(4,(" tconx ok\n"));

        c->use_oplocks = use_oplocks;

        return c;
}


static void reconnect(struct cli_state *cli[NSERVERS][NCONNECTIONS], int fnum[NSERVERS][NCONNECTIONS][NFILES],
                      char *share[NSERVERS])
{
        int server, conn, f;

        for (server=0;server<NSERVERS;server++)
        for (conn=0;conn<NCONNECTIONS;conn++) {
                if (cli[server][conn]) {
                        for (f=0;f<NFILES;f++) {
                                if (fnum[server][conn][f] != -1) {
                                        cli_close(cli[server][conn], fnum[server][conn][f]);
                                        fnum[server][conn][f] = -1;
                                }
                        }
                        cli_ulogoff(cli[server][conn]);
                        cli_shutdown(cli[server][conn]);
                }
                cli[server][conn] = connect_one(share[server], server);
                if (!cli[server][conn]) {
                        DEBUG(0,("Failed to connect to %s\n", share[server]));
                        exit(1);
                }
        }
}



static BOOL test_one(struct cli_state *cli[NSERVERS][NCONNECTIONS], 
                     int fnum[NSERVERS][NCONNECTIONS][NFILES],
                     struct record *rec)
{
        unsigned conn = rec->conn;
        unsigned f = rec->f;
        SMB_BIG_UINT start = rec->start;
        SMB_BIG_UINT len = rec->len;
        enum brl_type op = rec->lock_type;
        int server;
        BOOL ret[NSERVERS];
        NTSTATUS status[NSERVERS];

        switch (rec->lock_op) {
        case OP_LOCK:
                /* set a lock */
                for (server=0;server<NSERVERS;server++) {
                        ret[server] = cli_lock64(cli[server][conn], 
                                                 fnum[server][conn][f],
                                                 start, len, LOCK_TIMEOUT, op);
                        status[server] = cli_nt_error(cli[server][conn]);
                        if (!exact_error_codes && 
                            NT_STATUS_EQUAL(status[server], 
                                            NT_STATUS_FILE_LOCK_CONFLICT)) {
                                status[server] = NT_STATUS_LOCK_NOT_GRANTED;
                        }
                }
                if (showall || !NT_STATUS_EQUAL(status[0],status[1])) {
                        printf("lock   conn=%u f=%u range=%.0f(%.0f) op=%s -> %s:%s\n",
                               conn, f, 
                               (double)start, (double)len,
                               op==READ_LOCK?"READ_LOCK":"WRITE_LOCK",
                               nt_errstr(status[0]), nt_errstr(status[1]));
                }
                if (showall || !NT_STATUS_EQUAL(status[0],status[1])) show_locks();
                if (!NT_STATUS_EQUAL(status[0],status[1])) return False;
                break;
                
        case OP_UNLOCK:
                /* unset a lock */
                for (server=0;server<NSERVERS;server++) {
                        ret[server] = cli_unlock64(cli[server][conn], 
                                                   fnum[server][conn][f],
                                                   start, len);
                        status[server] = cli_nt_error(cli[server][conn]);
                }
                if (showall || 
                    (!hide_unlock_fails && !NT_STATUS_EQUAL(status[0],status[1]))) {
                        printf("unlock conn=%u f=%u range=%.0f(%.0f)       -> %s:%s\n",
                               conn, f, 
                               (double)start, (double)len,
                               nt_errstr(status[0]), nt_errstr(status[1]));
                }
                if (showall || !NT_STATUS_EQUAL(status[0],status[1])) show_locks();
                if (!hide_unlock_fails && !NT_STATUS_EQUAL(status[0],status[1])) 
                        return False;
                break;

        case OP_REOPEN:
                /* reopen the file */
                for (server=0;server<NSERVERS;server++) {
                        cli_close(cli[server][conn], fnum[server][conn][f]);
                        fnum[server][conn][f] = -1;
                }
                for (server=0;server<NSERVERS;server++) {
                        fnum[server][conn][f] = cli_open(cli[server][conn], FILENAME,
                                                         O_RDWR|O_CREAT,
                                                         DENY_NONE);
                        if (fnum[server][conn][f] == -1) {
                                printf("failed to reopen on share%d\n", server);
                                return False;
                        }
                }
                if (showall) {
                        printf("reopen conn=%u f=%u\n",
                               conn, f);
                        show_locks();
                }
                break;
        }

        return True;
}

static void close_files(struct cli_state *cli[NSERVERS][NCONNECTIONS], 
                        int fnum[NSERVERS][NCONNECTIONS][NFILES])
{
        int server, conn, f; 

        for (server=0;server<NSERVERS;server++)
        for (conn=0;conn<NCONNECTIONS;conn++)
        for (f=0;f<NFILES;f++) {
                if (fnum[server][conn][f] != -1) {
                        cli_close(cli[server][conn], fnum[server][conn][f]);
                        fnum[server][conn][f] = -1;
                }
        }
        for (server=0;server<NSERVERS;server++) {
                cli_unlink(cli[server][0], FILENAME);
        }
}

static void open_files(struct cli_state *cli[NSERVERS][NCONNECTIONS], 
                       int fnum[NSERVERS][NCONNECTIONS][NFILES])
{
        int server, conn, f; 

        for (server=0;server<NSERVERS;server++)
        for (conn=0;conn<NCONNECTIONS;conn++)
        for (f=0;f<NFILES;f++) {
                fnum[server][conn][f] = cli_open(cli[server][conn], FILENAME,
                                                 O_RDWR|O_CREAT,
                                                 DENY_NONE);
                if (fnum[server][conn][f] == -1) {
                        fprintf(stderr,"Failed to open fnum[%u][%u][%u]\n",
                                server, conn, f);
                        exit(1);
                }
        }
}


static int retest(struct cli_state *cli[NSERVERS][NCONNECTIONS], 
                   int fnum[NSERVERS][NCONNECTIONS][NFILES],
                   int n)
{
        int i;
        printf("testing %u ...\n", n);
        for (i=0; i<n; i++) {
                if (i && i % 100 == 0) {
                        printf("%u\n", i);
                }

                if (recorded[i].needed &&
                    !test_one(cli, fnum, &recorded[i])) return i;
        }
        return n;
}


/* each server has two connections open to it. Each connection has two file
   descriptors open on the file - 8 file descriptors in total 

   we then do random locking ops in tamdem on the 4 fnums from each
   server and ensure that the results match
 */
static void test_locks(char *share[NSERVERS])
{
        struct cli_state *cli[NSERVERS][NCONNECTIONS];
        int fnum[NSERVERS][NCONNECTIONS][NFILES];
        int n, i, n1, skip, r1, r2; 

        ZERO_STRUCT(fnum);
        ZERO_STRUCT(cli);

        recorded = SMB_MALLOC_ARRAY(struct record, numops);

        for (n=0; n<numops; n++) {
#if PRESETS
                if (n < sizeof(preset) / sizeof(preset[0])) {
                        recorded[n] = preset[n];
                } else {
#endif
                        recorded[n].conn = random() % NCONNECTIONS;
                        recorded[n].f = random() % NFILES;
                        recorded[n].start = lock_base + ((unsigned)random() % (lock_range-1));
                        recorded[n].len =  min_length +
                                random() % (lock_range-(recorded[n].start-lock_base));
                        recorded[n].start *= RANGE_MULTIPLE;
                        recorded[n].len *= RANGE_MULTIPLE;
                        r1 = random() % 100;
                        r2 = random() % 100;
                        if (r1 < READ_PCT) {
                                recorded[n].lock_type = READ_LOCK;
                        } else {
                                recorded[n].lock_type = WRITE_LOCK;
                        }
                        if (r2 < LOCK_PCT) {
                                recorded[n].lock_op = OP_LOCK;
                        } else if (r2 < UNLOCK_PCT) {
                                recorded[n].lock_op = OP_UNLOCK;
                        } else {
                                recorded[n].lock_op = OP_REOPEN;
                        }
                        recorded[n].needed = True;
                        if (!zero_zero && recorded[n].start==0 && recorded[n].len==0) {
                                recorded[n].len = 1;
                        }
#if PRESETS
                }
#endif
        }

        reconnect(cli, fnum, share);
        open_files(cli, fnum);
        n = retest(cli, fnum, numops);

        if (n == numops || !analyze) return;
        n++;

        skip = n/2;

        while (1) {
                n1 = n;

                close_files(cli, fnum);
                reconnect(cli, fnum, share);
                open_files(cli, fnum);

                for (i=0;i<n-skip;i+=skip) {
                        int m, j;
                        printf("excluding %d-%d\n", i, i+skip-1);
                        for (j=i;j<i+skip;j++) {
                                recorded[j].needed = False;
                        }

                        close_files(cli, fnum);
                        open_files(cli, fnum);

                        m = retest(cli, fnum, n);
                        if (m == n) {
                                for (j=i;j<i+skip;j++) {
                                        recorded[j].needed = True;
                                }
                        } else {
                                if (i+(skip-1) < m) {
                                        memmove(&recorded[i], &recorded[i+skip],
                                                (m-(i+skip-1))*sizeof(recorded[0]));
                                }
                                n = m-(skip-1);
                                i--;
                        }
                }

                if (skip > 1) {
                        skip = skip/2;
                        printf("skip=%d\n", skip);
                        continue;
                }

                if (n1 == n) break;
        }

        close_files(cli, fnum);
        reconnect(cli, fnum, share);
        open_files(cli, fnum);
        showall = True;
        n1 = retest(cli, fnum, n);
        if (n1 != n-1) {
                printf("ERROR - inconsistent result (%u %u)\n", n1, n);
        }
        close_files(cli, fnum);

        for (i=0;i<n;i++) {
                printf("{%s, %s, conn = %u, file = %u, start = %.0f, len = %.0f, %u},\n",
                       lock_op_name(recorded[i].lock_op),
                       lock_op_type(recorded[i].lock_type),
                       recorded[i].conn,
                       recorded[i].f,
                       (double)recorded[i].start,
                       (double)recorded[i].len,
                       recorded[i].needed);
        }       
}



static void usage(void)
{
        printf(
"Usage:\n\
  locktest //server1/share1 //server2/share2 [options..]\n\
  options:\n\
        -U user%%pass        (may be specified twice)\n\
        -k               use kerberos\n\
        -s seed\n\
        -o numops\n\
        -u          hide unlock fails\n\
        -a          (show all ops)\n\
        -A          analyse for minimal ops\n\
        -O          use oplocks\n\
        -E          enable exact error code checking\n\
        -Z          enable the zero/zero lock\n\
        -R range    set lock range\n\
        -B base     set lock base\n\
        -M min      set min lock length\n\
");
}

/****************************************************************************
  main program
****************************************************************************/
 int main(int argc,char *argv[])
{
        char *share[NSERVERS];
        int opt;
        char *p;
        int seed, server;

        setlinebuf(stdout);

        load_case_tables();

        dbf = x_stderr;

        if (argc < 3 || argv[1][0] == '-') {
                usage();
                exit(1);
        }

        setup_logging(argv[0],True);

        for (server=0;server<NSERVERS;server++) {
                share[server] = argv[1+server];
                all_string_sub(share[server],"/","\\",0);
        }

        argc -= NSERVERS;
        argv += NSERVERS;

        lp_load(dyn_CONFIGFILE,True,False,False,True);
        load_interfaces();

        if (getenv("USER")) {
                fstrcpy(username[0],getenv("USER"));
                fstrcpy(username[1],getenv("USER"));
        }

        seed = time(NULL);

        while ((opt = getopt(argc, argv, "U:s:ho:aAW:OkR:B:M:EZ")) != EOF) {
                switch (opt) {
                case 'k':
#ifdef HAVE_KRB5
                        use_kerberos = True;
#else
                        d_printf("No kerberos support compiled in\n");
                        exit(1);
#endif
                        break;
                case 'U':
                        got_user = 1;
                        if (got_pass == 2) {
                                d_printf("Max of 2 usernames\n");
                                exit(1);
                        }
                        fstrcpy(username[got_pass],optarg);
                        p = strchr_m(username[got_pass],'%');
                        if (p) {
                                *p = 0;
                                fstrcpy(password[got_pass], p+1);
                                got_pass++;
                        }
                        break;
                case 'R':
                        lock_range = strtol(optarg, NULL, 0);
                        break;
                case 'B':
                        lock_base = strtol(optarg, NULL, 0);
                        break;
                case 'M':
                        min_length = strtol(optarg, NULL, 0);
                        break;
                case 's':
                        seed = atoi(optarg);
                        break;
                case 'u':
                        hide_unlock_fails = True;
                        break;
                case 'o':
                        numops = atoi(optarg);
                        break;
                case 'O':
                        use_oplocks = True;
                        break;
                case 'a':
                        showall = True;
                        break;
                case 'A':
                        analyze = True;
                        break;
                case 'Z':
                        zero_zero = True;
                        break;
                case 'E':
                        exact_error_codes = True;
                        break;
                case 'h':
                        usage();
                        exit(1);
                default:
                        printf("Unknown option %c (%d)\n", (char)opt, opt);
                        exit(1);
                }
        }

        if(use_kerberos && !got_user) got_pass = True;

        argc -= optind;
        argv += optind;

        DEBUG(0,("seed=%u\n", seed));
        srandom(seed);

        test_locks(share);

        return(0);
}

---