| 1 | #include "../common/tdb_private.h"
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| 2 | #include "../common/io.c"
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| 3 | #include "../common/tdb.c"
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| 4 | #include "../common/lock.c"
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| 5 | #include "../common/freelist.c"
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| 6 | #include "../common/traverse.c"
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| 7 | #include "../common/transaction.c"
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| 8 | #include "../common/error.c"
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| 9 | #include "../common/open.c"
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| 10 | #include "../common/check.c"
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| 11 | #include "../common/hash.c"
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| 12 | #include "../common/mutex.c"
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| 13 | #include "tap-interface.h"
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| 14 | #include <stdlib.h>
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| 15 | #include <sys/types.h>
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| 16 | #include <sys/wait.h>
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| 17 | #include <stdarg.h>
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| 18 |
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| 19 | static TDB_DATA key, data;
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| 20 |
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| 21 | static void log_fn(struct tdb_context *tdb, enum tdb_debug_level level,
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| 22 | const char *fmt, ...)
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| 23 | {
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| 24 | va_list ap;
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| 25 | va_start(ap, fmt);
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| 26 | vfprintf(stderr, fmt, ap);
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| 27 | va_end(ap);
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| 28 | }
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| 29 |
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| 30 | static int do_child(int tdb_flags, int to, int from)
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| 31 | {
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| 32 | struct tdb_context *tdb;
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| 33 | unsigned int log_count;
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| 34 | struct tdb_logging_context log_ctx = { log_fn, &log_count };
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| 35 | int ret;
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| 36 | char c = 0;
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| 37 |
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| 38 | tdb = tdb_open_ex("mutex-trylock.tdb", 0, tdb_flags,
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| 39 | O_RDWR|O_CREAT, 0755, &log_ctx, NULL);
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| 40 | ok(tdb, "tdb_open_ex should succeed");
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| 41 |
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| 42 | ret = tdb_chainlock(tdb, key);
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| 43 | ok(ret == 0, "tdb_chainlock should succeed");
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| 44 |
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| 45 | write(to, &c, sizeof(c));
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| 46 |
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| 47 | read(from, &c, sizeof(c));
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| 48 |
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| 49 | ret = tdb_chainunlock(tdb, key);
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| 50 | ok(ret == 0, "tdb_chainunlock should succeed");
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| 51 |
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| 52 | write(to, &c, sizeof(c));
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| 53 |
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| 54 | return 0;
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| 55 | }
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| 56 |
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| 57 | /* The code should barf on TDBs created with rwlocks. */
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| 58 | int main(int argc, char *argv[])
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| 59 | {
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| 60 | struct tdb_context *tdb;
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| 61 | unsigned int log_count;
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| 62 | struct tdb_logging_context log_ctx = { log_fn, &log_count };
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| 63 | int ret, status;
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| 64 | pid_t child, wait_ret;
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| 65 | int fromchild[2];
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| 66 | int tochild[2];
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| 67 | char c;
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| 68 | int tdb_flags;
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| 69 | bool runtime_support;
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| 70 |
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| 71 | runtime_support = tdb_runtime_check_for_robust_mutexes();
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| 72 |
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| 73 | if (!runtime_support) {
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| 74 | skip(1, "No robust mutex support");
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| 75 | return exit_status();
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| 76 | }
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| 77 |
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| 78 | key.dsize = strlen("hi");
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| 79 | key.dptr = discard_const_p(uint8_t, "hi");
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| 80 | data.dsize = strlen("world");
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| 81 | data.dptr = discard_const_p(uint8_t, "world");
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| 82 |
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| 83 | pipe(fromchild);
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| 84 | pipe(tochild);
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| 85 |
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| 86 | tdb_flags = TDB_INCOMPATIBLE_HASH|
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| 87 | TDB_MUTEX_LOCKING|
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| 88 | TDB_CLEAR_IF_FIRST;
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| 89 |
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| 90 | child = fork();
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| 91 | if (child == 0) {
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| 92 | close(fromchild[0]);
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| 93 | close(tochild[1]);
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| 94 | return do_child(tdb_flags, fromchild[1], tochild[0]);
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| 95 | }
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| 96 | close(fromchild[1]);
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| 97 | close(tochild[0]);
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| 98 |
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| 99 | read(fromchild[0], &c, sizeof(c));
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| 100 |
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| 101 | tdb = tdb_open_ex("mutex-trylock.tdb", 0, tdb_flags,
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| 102 | O_RDWR|O_CREAT, 0755, &log_ctx, NULL);
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| 103 | ok(tdb, "tdb_open_ex should succeed");
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| 104 |
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| 105 | ret = tdb_chainlock_nonblock(tdb, key);
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| 106 | ok(ret == -1, "tdb_chainlock_nonblock should not succeed");
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| 107 |
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| 108 | write(tochild[1], &c, sizeof(c));
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| 109 |
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| 110 | read(fromchild[0], &c, sizeof(c));
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| 111 |
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| 112 | ret = tdb_chainlock_nonblock(tdb, key);
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| 113 | ok(ret == 0, "tdb_chainlock_nonblock should succeed");
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| 114 | ret = tdb_chainunlock(tdb, key);
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| 115 | ok(ret == 0, "tdb_chainunlock should succeed");
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| 116 |
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| 117 | wait_ret = wait(&status);
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| 118 | ok(wait_ret == child, "child should have exited correctly");
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| 119 |
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| 120 | diag("done");
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| 121 | return exit_status();
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| 122 | }
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