1 /* $NetBSD: t_renamerace.c,v 1.12 2010/09/01 19:41:28 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 #include <sys/utsname.h> 11 12 #include <atf-c.h> 13 #include <errno.h> 14 #include <fcntl.h> 15 #include <pthread.h> 16 #include <stdio.h> 17 #include <stdlib.h> 18 #include <string.h> 19 #include <unistd.h> 20 21 #include <rump/rump.h> 22 #include <rump/rump_syscalls.h> 23 24 #include "../common/h_fsmacros.h" 25 #include "../../h_macros.h" 26 27 static volatile int quittingtime; 28 pid_t wrkpid; 29 30 static void * 31 w1(void *arg) 32 { 33 int fd; 34 35 rump_pub_lwproc_newlwp(wrkpid); 36 37 while (!quittingtime) { 38 fd = rump_sys_open("rename.test1", 39 O_WRONLY|O_CREAT|O_TRUNC, 0666); 40 if (fd == -1 && errno != EEXIST) 41 atf_tc_fail_errno("create"); 42 rump_sys_unlink("rename.test1"); 43 rump_sys_close(fd); 44 } 45 46 return NULL; 47 } 48 49 static void * 50 w1_dirs(void *arg) 51 { 52 53 rump_pub_lwproc_newlwp(wrkpid); 54 55 while (!quittingtime) { 56 if (rump_sys_mkdir("rename.test1", 0777) == -1) 57 atf_tc_fail_errno("mkdir"); 58 rump_sys_rmdir("rename.test1"); 59 } 60 61 return NULL; 62 } 63 64 static void * 65 w2(void *arg) 66 { 67 68 rump_pub_lwproc_newlwp(wrkpid); 69 70 while (!quittingtime) { 71 rump_sys_rename("rename.test1", "rename.test2"); 72 } 73 74 return NULL; 75 } 76 77 #define NWRK 8 78 static void 79 renamerace(const atf_tc_t *tc, const char *mp) 80 { 81 pthread_t pt1[NWRK], pt2[NWRK]; 82 int i; 83 84 if (FSTYPE_LFS(tc)) 85 atf_tc_expect_signal(-1, "PR kern/43582"); 86 87 if (FSTYPE_MSDOS(tc)) 88 atf_tc_skip("test fails in some setups, reason unknown"); 89 90 RL(rump_sys_chdir(mp)); 91 for (i = 0; i < NWRK; i++) 92 pthread_create(&pt1[i], NULL, w1, NULL); 93 94 for (i = 0; i < NWRK; i++) 95 pthread_create(&pt2[i], NULL, w2, NULL); 96 97 sleep(5); 98 quittingtime = 1; 99 100 for (i = 0; i < NWRK; i++) 101 pthread_join(pt1[i], NULL); 102 for (i = 0; i < NWRK; i++) 103 pthread_join(pt2[i], NULL); 104 RL(rump_sys_chdir("/")); 105 106 /* 107 * XXX: does not always fail on LFS, especially for unicpu 108 * configurations. see other ramblings about racy tests. 109 */ 110 if (FSTYPE_LFS(tc)) 111 abort(); 112 } 113 114 static void 115 renamerace_dirs(const atf_tc_t *tc, const char *mp) 116 { 117 pthread_t pt1, pt2; 118 119 if (FSTYPE_SYSVBFS(tc)) 120 atf_tc_skip("directories not supported"); 121 122 /* XXX: msdosfs also sometimes hangs */ 123 if (FSTYPE_FFS(tc) || FSTYPE_EXT2FS(tc) || FSTYPE_LFS(tc) || 124 FSTYPE_MSDOS(tc)) 125 atf_tc_expect_signal(-1, "PR kern/43626"); 126 127 RZ(rump_pub_lwproc_newproc()); 128 RL(wrkpid = rump_sys_getpid()); 129 130 RL(rump_sys_chdir(mp)); 131 pthread_create(&pt1, NULL, w1_dirs, NULL); 132 pthread_create(&pt2, NULL, w2, NULL); 133 134 sleep(5); 135 quittingtime = 1; 136 137 pthread_join(pt1, NULL); 138 pthread_join(pt2, NULL); 139 RL(rump_sys_chdir("/")); 140 141 /* 142 * Doesn't always trigger when run on a slow backend 143 * (i.e. not on tmpfs/mfs). So do the usual kludge. 144 */ 145 if (FSTYPE_FFS(tc) || FSTYPE_EXT2FS(tc) || FSTYPE_LFS(tc) || 146 FSTYPE_MSDOS(tc)) 147 abort(); 148 } 149 150 ATF_TC_FSAPPLY(renamerace, "rename(2) race with file unlinked mid-operation"); 151 ATF_TC_FSAPPLY(renamerace_dirs, "rename(2) race with directories"); 152 153 ATF_TP_ADD_TCS(tp) 154 { 155 156 ATF_TP_FSAPPLY(renamerace); /* PR kern/41128 */ 157 ATF_TP_FSAPPLY(renamerace_dirs); 158 159 return atf_no_error(); 160 } 161