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-rw-r--r--ctdb/tests/src/pidfile_test.c242
1 files changed, 242 insertions, 0 deletions
diff --git a/ctdb/tests/src/pidfile_test.c b/ctdb/tests/src/pidfile_test.c
new file mode 100644
index 0000000..592fc2b
--- /dev/null
+++ b/ctdb/tests/src/pidfile_test.c
@@ -0,0 +1,242 @@
+/*
+ pidfile tests
+
+ Copyright (C) Amitay Isaacs 2016
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "replace.h"
+#include "system/wait.h"
+
+#include <assert.h>
+
+#include "common/pidfile.c"
+
+
+/* create pid file, check pid file exists, check pid and remove pid file */
+static void test1(const char *pidfile)
+{
+ struct pidfile_context *pid_ctx;
+ int ret;
+ struct stat st;
+ FILE *fp;
+ pid_t pid;
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+ assert(ret == 0);
+ assert(pid_ctx != NULL);
+
+ ret = stat(pidfile, &st);
+ assert(ret == 0);
+ assert(S_ISREG(st.st_mode));
+
+ fp = fopen(pidfile, "r");
+ assert(fp != NULL);
+ ret = fscanf(fp, "%d", &pid);
+ assert(ret == 1);
+ assert(pid == getpid());
+ fclose(fp);
+
+ TALLOC_FREE(pid_ctx);
+
+ ret = stat(pidfile, &st);
+ assert(ret == -1);
+}
+
+/* create pid file in two processes */
+static void test2(const char *pidfile)
+{
+ struct pidfile_context *pid_ctx;
+ pid_t pid, pid2;
+ int fd[2];
+ int ret;
+ size_t nread;
+ FILE *fp;
+ struct stat st;
+
+ ret = pipe(fd);
+ assert(ret == 0);
+
+ pid = fork();
+ assert(pid != -1);
+
+ if (pid == 0) {
+ ssize_t nwritten;
+
+ close(fd[0]);
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+ assert(ret == 0);
+ assert(pid_ctx != NULL);
+
+ nwritten = write(fd[1], &ret, sizeof(ret));
+ assert(nwritten == sizeof(ret));
+
+ sleep(10);
+
+ TALLOC_FREE(pid_ctx);
+
+ nwritten = write(fd[1], &ret, sizeof(ret));
+ assert(nwritten == sizeof(ret));
+
+ exit(1);
+ }
+
+ close(fd[1]);
+
+ nread = read(fd[0], &ret, sizeof(ret));
+ assert(nread == sizeof(ret));
+ assert(ret == 0);
+
+ fp = fopen(pidfile, "r");
+ assert(fp != NULL);
+ ret = fscanf(fp, "%d", &pid2);
+ assert(ret == 1);
+ assert(pid == pid2);
+ fclose(fp);
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+ assert(ret != 0);
+
+ nread = read(fd[0], &ret, sizeof(ret));
+ assert(nread == sizeof(ret));
+ assert(ret == 0);
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+ assert(ret == 0);
+ assert(pid_ctx != NULL);
+
+ TALLOC_FREE(pid_ctx);
+
+ ret = stat(pidfile, &st);
+ assert(ret == -1);
+}
+
+/* create pid file, fork, try to remove pid file in separate process */
+static void test3(const char *pidfile)
+{
+ struct pidfile_context *pid_ctx;
+ pid_t pid;
+ int fd[2];
+ int ret;
+ size_t nread;
+ struct stat st;
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+ assert(ret == 0);
+ assert(pid_ctx != NULL);
+
+ ret = pipe(fd);
+ assert(ret == 0);
+
+ pid = fork();
+ assert(pid != -1);
+
+ if (pid == 0) {
+ ssize_t nwritten;
+
+ close(fd[0]);
+
+ TALLOC_FREE(pid_ctx);
+
+ nwritten = write(fd[1], &ret, sizeof(ret));
+ assert(nwritten == sizeof(ret));
+
+ exit(1);
+ }
+
+ close(fd[1]);
+
+ nread = read(fd[0], &ret, sizeof(ret));
+ assert(nread == sizeof(ret));
+
+ ret = stat(pidfile, &st);
+ assert(ret == 0);
+
+ TALLOC_FREE(pid_ctx);
+
+ ret = stat(pidfile, &st);
+ assert(ret == -1);
+}
+
+/* create pid file, kill process, overwrite pid file in different process */
+static void test4(const char *pidfile)
+{
+ struct pidfile_context *pid_ctx;
+ pid_t pid, pid2;
+ int fd[2];
+ int ret;
+ size_t nread;
+ struct stat st;
+
+ ret = pipe(fd);
+ assert(ret == 0);
+
+ pid = fork();
+ assert(pid != -1);
+
+ if (pid == 0) {
+ ssize_t nwritten;
+
+ close(fd[0]);
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+
+ nwritten = write(fd[1], &ret, sizeof(ret));
+ assert(nwritten == sizeof(ret));
+
+ sleep(99);
+ exit(1);
+ }
+
+ close(fd[1]);
+
+ nread = read(fd[0], &ret, sizeof(ret));
+ assert(nread == sizeof(ret));
+ assert(ret == 0);
+
+ ret = stat(pidfile, &st);
+ assert(ret == 0);
+
+ ret = kill(pid, SIGKILL);
+ assert(ret == 0);
+
+ pid2 = waitpid(pid, &ret, 0);
+ assert(pid2 == pid);
+
+ ret = pidfile_context_create(NULL, pidfile, &pid_ctx);
+ assert(ret == 0);
+ assert(pid_ctx != NULL);
+
+ ret = stat(pidfile, &st);
+ assert(ret == 0);
+
+ TALLOC_FREE(pid_ctx);
+}
+
+int main(int argc, const char **argv)
+{
+ if (argc != 2) {
+ fprintf(stderr, "Usage: %s <pidfile>\n", argv[0]);
+ exit(1);
+ }
+
+ test1(argv[1]);
+ test2(argv[1]);
+ test3(argv[1]);
+ test4(argv[1]);
+
+ return 0;
+}