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/*
Copyright (c) 2018 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <glusterfs/api/glfs.h>
#include <glusterfs/api/glfs-handles.h>
#include <string.h>
#include <time.h>
#include <libgen.h>
static void
cleanup(glfs_t *fs)
{
if (!fs)
return;
#if 0
/* glfs fini path is still racy and crashing the program. Since
* this program any way has to die, we are not going to call fini
* in the released versions. i.e. final builds. For all
* internal testing lets enable this so that glfs_fini code
* path becomes stable. */
glfs_fini (fs);
#endif
}
int
main(int argc, char **argv)
{
glfs_t *fs = NULL;
int ret = -1;
char *volname = NULL;
char *logfilepath = NULL;
char *path_src = NULL;
char *path_dst = NULL;
glfs_fd_t *glfd_in = NULL;
glfs_fd_t *glfd_out = NULL;
char *volfile_server = NULL;
struct stat stbuf = {
0,
};
struct stat prestat_dst = {
0,
};
struct stat poststat_dst = {
0,
};
size_t len;
if (argc < 6) {
printf("%s <volume> <log file path> <source> <destination>", argv[0]);
ret = -1;
goto out;
}
volfile_server = argv[1];
volname = argv[2];
logfilepath = argv[3];
path_src = argv[4];
path_dst = argv[5];
if (path_src[0] != '/') {
fprintf(stderr, "source path %s is not absolute", path_src);
errno = EINVAL;
goto out;
}
if (path_dst[0] != '/') {
fprintf(stderr, "destination path %s is not absolute", path_dst);
errno = EINVAL;
goto out;
}
fs = glfs_new(volname);
if (!fs) {
ret = -errno;
fprintf(stderr, "Not able to initialize volume '%s'", volname);
goto out;
}
ret = glfs_set_volfile_server(fs, "tcp", volfile_server, 24007);
if (ret < 0) {
ret = -errno;
fprintf(stderr,
"Failed to set the volfile server, "
"%s",
strerror(errno));
goto out;
}
ret = glfs_set_logging(fs, logfilepath, 7);
if (ret < 0) {
ret = -errno;
fprintf(stderr,
"Failed to set the log file path, "
"%s",
strerror(errno));
goto out;
}
ret = glfs_init(fs);
if (ret < 0) {
ret = -errno;
if (errno == ENOENT) {
fprintf(stderr, "Volume %s does not exist", volname);
} else {
fprintf(stderr,
"%s: Not able to fetch "
"volfile from glusterd",
volname);
}
goto out;
}
glfd_in = glfs_open(fs, path_src, O_RDONLY | O_NONBLOCK);
if (!glfd_in) {
ret = -errno;
goto out;
} else {
printf("OPEN_SRC: opening %s is success\n", path_src);
}
glfd_out = glfs_creat(fs, path_dst, O_RDWR, 0644);
if (!glfd_out) {
fprintf(stderr,
"FAILED_DST_OPEN: failed to "
"open (create) %s (%s)\n",
path_dst, strerror(errno));
ret = -errno;
goto out;
} else {
printf("OPEN_DST: opening %s is success\n", path_dst);
}
ret = glfs_fstat(glfd_in, &stbuf);
if (ret < 0) {
ret = -errno;
goto out;
} else {
printf("FSTAT_SRC: fstat on %s is success\n", path_dst);
}
len = stbuf.st_size;
do {
ret = glfs_copy_file_range(glfd_in, NULL, glfd_out, NULL, len, 0,
&stbuf, &prestat_dst, &poststat_dst);
if (ret == -1) {
fprintf(stderr, "copy_file_range failed with %s\n",
strerror(errno));
ret = -errno;
break;
} else {
printf("copy_file_range successful\n");
len -= ret;
}
} while (len > 0);
out:
if (glfd_in)
glfs_close(glfd_in);
if (glfd_out)
glfs_close(glfd_out);
cleanup(fs);
return ret;
}
|
