tests/fs/ffs/t_renamerace.c

   1 /*      $NetBSD: t_renamerace.c,v 1.7 2009/08/03 14:25:24 pooka Exp $   */
   2
   3 /*
   4  * Modified for rump and atf from a program supplied
   5  * by Nicolas Joly in kern/40948
   6  */
   7
   8 #include <sys/types.h>
   9 #include <sys/mount.h>
  10
  11 #include <atf-c.h>
  12 #include <errno.h>
  13 #include <fcntl.h>
  14 #include <pthread.h>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <unistd.h>
  18 #include <string.h>
  19
  20 #include <rump/rump.h>
  21 #include <rump/rump_syscalls.h>
  22
  23 #include <ufs/ufs/ufsmount.h>
  24
  25 #include "../../h_macros.h"
  26
  27 ATF_TC_WITH_CLEANUP(renamerace);
  28 ATF_TC_HEAD(renamerace, tc)
  29 {
  30         atf_tc_set_md_var(tc, "descr", "rename(2) race against files "
  31             "unlinked mid-operation, kern/40948");
  32         /* XXX: test hangs in qemu for unknown reasons */
  33         atf_tc_set_md_var(tc, "timeout", "20");
  34 }
  35
  36 volatile int quit;
  37
  38 static void *
  39 w1(void *arg)
  40 {
  41         int fd;
  42
  43         while (!quit) {
  44                 fd = rump_sys_open("/mp/rename.test1",
  45                     O_WRONLY|O_CREAT|O_TRUNC, 0666);
  46                 rump_sys_unlink("/mp/rename.test1");
  47                 rump_sys_close(fd);
  48         }
  49         return NULL;
  50 }
  51
  52 static void *
  53 w2(void *arg)
  54 {
  55
  56         while (!quit)
  57                 rump_sys_rename("/mp/rename.test1", "/mp/rename.test2");
  58
  59         return NULL;
  60 }
  61
  62 /* XXX: how to do cleanup if we use mkdtemp? */
  63 #define IMAGENAME "/tmp/ffsatf.img"
  64 static char image[MAXPATHLEN];
  65
  66 #define FAKEBLK "/dev/sp00ka"
  67
  68 ATF_TC_BODY(renamerace, tc)
  69 {
  70         struct ufs_args args;
  71         char cmd[256];
  72         pthread_t pt1, pt2;
  73
  74 #if 0
  75         strcpy(image, TMPPATH);
  76         if (mkdtemp(image) == NULL)
  77                 atf_tc_fail_errno("can't create tmpdir %s", TMPPATH);
  78         strcat(image, "/ffsatf.img");
  79 #else
  80         strcpy(image, IMAGENAME);
  81 #endif
  82
  83         strcpy(cmd, "newfs -F -s 10000 ");
  84         strcat(cmd, image);
  85
  86         if (system(cmd) == -1)
  87                 atf_tc_fail_errno("newfs failed");
  88
  89         memset(&args, 0, sizeof(args));
  90         args.fspec = __UNCONST(FAKEBLK);
  91
  92         rump_init();
  93         if (rump_sys_mkdir("/mp", 0777) == -1)
  94                 atf_tc_fail_errno("cannot create mountpoint");
  95         rump_etfs_register(FAKEBLK, image, RUMP_ETFS_BLK);
  96         if (rump_sys_mount(MOUNT_FFS, "/mp", MNT_LOG, &args, sizeof(args))==-1)
  97                 atf_tc_fail_errno("rump_sys_mount failed");
  98
  99         pthread_create(&pt1, NULL, w1, NULL);
 100         pthread_create(&pt2, NULL, w2, NULL);
 101
 102         sleep(10);
 103
 104         quit = 1;
 105         pthread_join(pt1, NULL);
 106         pthread_join(pt2, NULL);
 107
 108         if (rump_sys_unmount("/mp", 0) == -1)
 109                 atf_tc_fail_errno("unmount failed");
 110 }
 111
 112 ATF_TC_CLEANUP(renamerace, tc)
 113 {
 114 #if 0
 115         char *img;
 116
 117         img = strrchr(image, '/');
 118         if (!img)
 119                 return;
 120
 121         printf("removing %s\n", img+1);
 122         unlink(img+1);
 123         *img = '\0';
 124         rmdir(img);
 125 #else
 126         unlink(IMAGENAME);
 127 #endif
 128 }
 129
 130 ATF_TP_ADD_TCS(tp)
 131 {
 132         ATF_TP_ADD_TC(tp, renamerace);
 133         return 0; /* ??? */
 134 }