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#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <glusterfs/api/glfs.h>
#include <glusterfs/api/glfs-handles.h>
#define LOG_ERR(func, ret) do { \
if (ret != 0) { \
fprintf (stderr, "%s : returned error %d (%s)\n", \
func, ret, strerror (errno)); \
goto out; \
} else { \
fprintf (stderr, "%s : returned %d\n", func, ret); \
} \
} while (0)
int
main (int argc, char *argv[])
{
glfs_t *fs = NULL;
glfs_t *fs2 = NULL;
glfs_t *fs_tmp = NULL;
glfs_t *fs_tmp2 = NULL;
int ret = 0, i;
glfs_fd_t *fd = NULL;
glfs_fd_t *fd2 = NULL;
glfs_fd_t *fd_tmp = NULL;
glfs_fd_t *fd_tmp2 = NULL;
char readbuf[32];
char *filename = "file_tmp";
char *writebuf = NULL;
char *vol_id = NULL;
unsigned int cnt = 1;
struct glfs_upcall *cbk = NULL;
char *logfile = NULL;
char *volname = NULL;
char *hostname = NULL;
if (argc != 4) {
fprintf (stderr, "Invalid argument\n");
exit(1);
}
hostname = argv[1];
volname = argv[2];
logfile = argv[3];
fs = glfs_new (volname);
if (!fs) {
fprintf (stderr, "glfs_new: returned NULL\n");
return -1;
}
ret = glfs_set_volfile_server (fs, "tcp", hostname, 24007);
LOG_ERR("glfs_set_volfile_server", ret);
ret = glfs_set_logging (fs, logfile, 7);
LOG_ERR("glfs_set_logging", ret);
ret = glfs_init (fs);
LOG_ERR("glfs_init", ret);
/* This does not block, but enables caching of events. Real
* applications like NFS-Ganesha run this in a thread before activity
* on the fs (through this instance) happens. */
ret = glfs_h_poll_upcall(fs_tmp, &cbk);
LOG_ERR ("glfs_h_poll_upcall", ret);
fs2 = glfs_new (volname);
if (!fs2) {
fprintf (stderr, "glfs_new fs2: returned NULL\n");
return 1;
}
ret = glfs_set_volfile_server (fs2, "tcp", hostname, 24007);
LOG_ERR("glfs_set_volfile_server-fs2", ret);
ret = glfs_set_logging (fs2, logfile, 7);
LOG_ERR("glfs_set_logging-fs2", ret);
ret = glfs_init (fs2);
LOG_ERR("glfs_init-fs2", ret);
fd = glfs_creat(fs, filename, O_RDWR|O_SYNC, 0644);
if (fd <= 0) {
ret = -1;
LOG_ERR ("glfs_creat", ret);
}
fprintf (stderr, "glfs-create fd - %d\n", fd);
fd2 = glfs_open(fs2, filename, O_SYNC|O_RDWR|O_CREAT);
if (fd2 <= 0) {
ret = -1;
LOG_ERR ("glfs_open-fs2", ret);
}
fprintf (stderr, "glfs-open fd2 - %d\n", fd2);
do {
if (cnt%2) {
fd_tmp = fd;
fs_tmp = fs;
fd_tmp2 = fd2;
fs_tmp2 = fs2;
} else {
fd_tmp = fd2;
fs_tmp = fs2;
fd_tmp2 = fd;
fs_tmp2 = fs;
}
/* WRITE on fd_tmp */
writebuf = malloc(10);
if (writebuf) {
memcpy (writebuf, "abcd", 4);
ret = glfs_write (fd_tmp, writebuf, 4, 0);
if (ret <= 0) {
ret = -1;
LOG_ERR ("glfs_write", ret);
} else {
fprintf (stderr,
"glfs_write suceeded\n");
}
free(writebuf);
} else {
fprintf (stderr,
"Could not allocate writebuf\n");
return -1;
}
/* READ on fd_tmp2 */
ret = glfs_lseek (fd_tmp2, 0, SEEK_SET);
LOG_ERR ("glfs_lseek", ret);
memset (readbuf, 0, sizeof(readbuf));
ret = glfs_pread (fd_tmp2, readbuf, 4, 0, 0);
if (ret <= 0) {
ret = -1;
LOG_ERR ("glfs_pread", ret);
} else {
fprintf (stderr, "glfs_read: %s\n", readbuf);
}
/* Open() fops seem to be not performed on server side until
* there are I/Os on that fd
*/
if (cnt > 2) {
struct glfs_upcall_inode *in_arg = NULL;
enum glfs_upcall_reason reason = 0;
struct glfs_object *object = NULL;
uint64_t flags = 0;
uint64_t expire = 0;
ret = glfs_h_poll_upcall(fs_tmp, &cbk);
LOG_ERR ("glfs_h_poll_upcall", ret);
reason = glfs_upcall_get_reason (cbk);
/* Expect 'GLFS_INODE_INVALIDATE' upcall event. */
if (reason == GLFS_UPCALL_INODE_INVALIDATE) {
in_arg = glfs_upcall_get_event (cbk);
object = glfs_upcall_inode_get_object (in_arg);
flags = glfs_upcall_inode_get_flags (in_arg);
expire = glfs_upcall_inode_get_expire (in_arg);
fprintf (stderr, " upcall event type - %d,"
" object(%p), flags(%d), "
" expire_time_attr(%d)\n" ,
reason, object, flags, expire);
} else {
fprintf (stderr,
"Didnt receive upcall notify event");
ret = -1;
goto err;
}
glfs_free (cbk);
}
sleep(5);
} while (++cnt < 5);
err:
glfs_close(fd);
LOG_ERR ("glfs_close", ret);
glfs_close(fd2);
LOG_ERR ("glfs_close-fd2", ret);
out:
if (fs) {
ret = glfs_fini(fs);
fprintf (stderr, "glfs_fini(fs) returned %d \n", ret);
}
if (fs2) {
ret = glfs_fini(fs2);
fprintf (stderr, "glfs_fini(fs2) returned %d \n", ret);
}
if (ret)
exit(1);
exit(0);
}
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