static int ciopfs_opt_parse(void *data, const char *arg, int key, struct fuse_args *outargs)
{
switch (key) {
case FUSE_OPT_KEY_NONOPT:
if (!dirname) {
/* realpath(char *s, NULL) is a POSIX.1-2008 extension, originally from GLIBC,
and might be unavailible on older non-glibc systems. */
if (!(dirname = realpath(arg, NULL))) {
perror(outargs->argv[0]);
exit(1);
}
return 0;
}
return 1;
case FUSE_OPT_KEY_OPT:
if (arg[0] == '-') {
switch (arg[1]) {
case 'd':
case 'f':
dolog = stderr_print;
}
} else if (!strcmp("allow_other", arg)) {
/* disable multithreaded mode if the file system
* is accessible to multiple users simultanousely
* because we can't store uid/gid per thread and
* this leads to all sorts of race conditions and
* security issues.
*/
single_threaded = (getuid() == 0);
}
return 1;
case CIOPFS_OPT_HELP:
usage(outargs->argv[0]);
fuse_opt_add_arg(outargs, "-ho");
fuse_main(outargs->argc, outargs->argv, &ciopfs_operations, NULL);
exit(0);
case CIOPFS_OPT_VERSION:
fprintf(stderr, "%s: "VERSION" fuse: %d\n", outargs->argv[0], fuse_version());
exit(0);
default:
fprintf(stderr, "see `%s -h' for usage\n", outargs->argv[0]);
exit(1);
}
return 1;
}
/**
* parse_options - Read and validate the programs command line
* Read the command line, verify the syntax and parse the options.
*
* Return: 0 success, -1 error.
*/
int ntfs_parse_options(struct ntfs_options *popts, void (*usage)(void),
int argc, char *argv[])
{
int c;
static const char *sopt = "-o:hnvV";
static const struct option lopt[] = {
{ "options", required_argument, NULL, 'o' },
{ "help", no_argument, NULL, 'h' },
{ "no-mtab", no_argument, NULL, 'n' },
{ "verbose", no_argument, NULL, 'v' },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 }
};
opterr = 0; /* We'll handle the errors, thank you. */
while ((c = getopt_long(argc, argv, sopt, lopt, NULL)) != -1) {
switch (c) {
case 1: /* A non-option argument */
if (!popts->device) {
popts->device = ntfs_malloc(PATH_MAX + 1);
if (!popts->device)
return -1;
/* Canonicalize device name (mtab, etc) */
popts->arg_device = optarg;
if (!ntfs_realpath_canonicalize(optarg,
popts->device)) {
ntfs_log_perror("%s: Failed to access "
"volume '%s'", EXEC_NAME, optarg);
free(popts->device);
popts->device = NULL;
return -1;
}
} else if (!popts->mnt_point) {
popts->mnt_point = optarg;
} else {
ntfs_log_error("%s: You must specify exactly one "
"device and exactly one mount "
"point.\n", EXEC_NAME);
return -1;
}
break;
case 'o':
if (popts->options)
if (ntfs_strappend(&popts->options, ","))
return -1;
if (ntfs_strappend(&popts->options, optarg))
return -1;
break;
case 'h':
usage();
exit(9);
case 'n':
/*
* no effect - automount passes it, meaning 'no-mtab'
*/
break;
case 'v':
/*
* We must handle the 'verbose' option even if
* we don't use it because mount(8) passes it.
*/
break;
case 'V':
ntfs_log_info("%s %s %s %d\n", EXEC_NAME, VERSION,
FUSE_TYPE, fuse_version());
exit(0);
default:
ntfs_log_error("%s: Unknown option '%s'.\n", EXEC_NAME,
argv[optind - 1]);
return -1;
}
}
if (!popts->device) {
ntfs_log_error("%s: No device is specified.\n", EXEC_NAME);
return -1;
}
if (!popts->mnt_point) {
ntfs_log_error("%s: No mountpoint is specified.\n", EXEC_NAME);
return -1;
}
return 0;
}
int main()
{
return !(FUSE_VERSION == fuse_version());
}
void make_fsname(struct fuse_args *args) {
char fsnamearg[256];
unsigned int l;
#if HAVE_FUSE_VERSION
int libver;
libver = fuse_version();
if (libver >= 27) {
l = snprintf(fsnamearg,256,"-osubtype=mfs%s,fsname=",(mfsopts.meta)?"meta":"");
if (libver >= 28) {
l += strncpy_escape_commas(fsnamearg+l,256-l,mfsopts.masterhost);
if (l<255) {
fsnamearg[l++]=':';
}
l += strncpy_escape_commas(fsnamearg+l,256-l,mfsopts.masterport);
if (mfsopts.subfolder[0]!='/') {
if (l<255) {
fsnamearg[l++]='/';
}
}
if (mfsopts.subfolder[0]!='/' && mfsopts.subfolder[1]!=0) {
l += strncpy_escape_commas(fsnamearg+l,256-l,mfsopts.subfolder);
}
if (l>255) {
l=255;
}
fsnamearg[l]=0;
} else {
l += strncpy_remove_commas(fsnamearg+l,256-l,mfsopts.masterhost);
if (l<255) {
fsnamearg[l++]=':';
}
l += strncpy_remove_commas(fsnamearg+l,256-l,mfsopts.masterport);
if (mfsopts.subfolder[0]!='/') {
if (l<255) {
fsnamearg[l++]='/';
}
}
if (mfsopts.subfolder[0]!='/' && mfsopts.subfolder[1]!=0) {
l += strncpy_remove_commas(fsnamearg+l,256-l,mfsopts.subfolder);
}
if (l>255) {
l=255;
}
fsnamearg[l]=0;
}
} else {
#else
l = snprintf(fsnamearg,256,"-ofsname=mfs%s#",(mfsopts.meta)?"meta":"");
l += strncpy_remove_commas(fsnamearg+l,256-l,mfsopts.masterhost);
if (l<255) {
fsnamearg[l++]=':';
}
l += strncpy_remove_commas(fsnamearg+l,256-l,mfsopts.masterport);
if (mfsopts.subfolder[0]!='/') {
if (l<255) {
fsnamearg[l++]='/';
}
}
if (mfsopts.subfolder[0]!='/' && mfsopts.subfolder[1]!=0) {
l += strncpy_remove_commas(fsnamearg+l,256-l,mfsopts.subfolder);
}
if (l>255) {
l=255;
}
fsnamearg[l]=0;
#endif
#if HAVE_FUSE_VERSION
}
#endif
fuse_opt_insert_arg(args, 1, fsnamearg);
}
static void usage (void)
{
printf(usage_msg, PACKAGE, VERSION, fuse_version(), V2, HOME);
}
int main (int argc, char *argv[])
{
int err = 0;
struct stat sbuf;
char *parsed_options = NULL;
struct fuse_args fargs = FUSE_ARGS_INIT(0, NULL);
struct extfs_data opts;
debugf("version:'%s', fuse_version:'%d'", VERSION, fuse_version());
memset(&opts, 0, sizeof(opts));
if (parse_options(argc, argv, &opts)) {
usage();
return -1;
}
if (stat(opts.device, &sbuf)) {
debugf_main("Failed to access '%s'", opts.device);
err = -3;
goto err_out;
}
if (do_probe(&opts) != 0) {
debugf_main("Probe failed");
err = -4;
goto err_out;
}
parsed_options = parse_mount_options(opts.options ? opts.options : "", &opts);
if (!parsed_options) {
err = -2;
goto err_out;
}
debugf_main("opts.device: %s", opts.device);
debugf_main("opts.mnt_point: %s", opts.mnt_point);
debugf_main("opts.volname: %s", (opts.volname != NULL) ? opts.volname : "");
debugf_main("opts.options: %s", opts.options);
debugf_main("parsed_options: %s", parsed_options);
if (fuse_opt_add_arg(&fargs, PACKAGE) == -1 ||
fuse_opt_add_arg(&fargs, "-s") == -1 ||
fuse_opt_add_arg(&fargs, "-o") == -1 ||
fuse_opt_add_arg(&fargs, parsed_options) == -1 ||
fuse_opt_add_arg(&fargs, opts.mnt_point) == -1) {
debugf_main("Failed to set FUSE options");
fuse_opt_free_args(&fargs);
err = -5;
goto err_out;
}
if (opts.readonly == 0) {
debugf_main("mounting read-write");
} else {
debugf_main("mounting read-only");
}
fuse_main(fargs.argc, fargs.argv, &ext2fs_ops, &opts);
err_out:
fuse_opt_free_args(&fargs);
free(parsed_options);
free(opts.options);
free(opts.device);
free(opts.volname);
return err;
}
int do_mount(char *spec, char *dir, int mflag, char *opt)
{
// VERIFY(mflag == 0);
vfs_t *vfs = kmem_zalloc(sizeof(vfs_t), KM_SLEEP);
if(vfs == NULL)
return ENOMEM;
VFS_INIT(vfs, zfs_vfsops, 0);
VFS_HOLD(vfs);
struct mounta uap = {
.spec = spec,
.dir = dir,
.flags = mflag | MS_SYSSPACE,
.fstype = "zfs-fuse",
.dataptr = "",
.datalen = 0,
.optptr = opt,
.optlen = strlen(opt)
};
int ret;
if ((ret = VFS_MOUNT(vfs, rootdir, &uap, kcred)) != 0) {
kmem_free(vfs, sizeof(vfs_t));
return ret;
}
/* Actually, optptr is totally ignored by VFS_MOUNT.
* So we are going to pass this with fuse_mount_options if possible */
if (fuse_mount_options == NULL)
fuse_mount_options = "";
char real_opts[1024];
*real_opts = 0;
if (*fuse_mount_options)
strcat(real_opts,fuse_mount_options); // comes with a starting ,
if (*opt)
sprintf(&real_opts[strlen(real_opts)],",%s",opt);
#ifdef DEBUG
atomic_inc_32(&mounted);;
fprintf(stderr, "mounting %s\n", dir);
#endif
char *fuse_opts = NULL;
int has_default_perm = 0;
if (fuse_version() <= 27) {
if(asprintf(&fuse_opts, FUSE_OPTIONS, spec, real_opts) == -1) {
VERIFY(do_umount(vfs, B_FALSE) == 0);
return ENOMEM;
}
} else {
if(asprintf(&fuse_opts, FUSE_OPTIONS ",big_writes", spec, real_opts) == -1) {
VERIFY(do_umount(vfs, B_FALSE) == 0);
return ENOMEM;
}
}
struct fuse_args args = FUSE_ARGS_INIT(0, NULL);
if(fuse_opt_add_arg(&args, "") == -1 ||
fuse_opt_add_arg(&args, "-o") == -1 ||
fuse_opt_add_arg(&args, fuse_opts) == -1) {
fuse_opt_free_args(&args);
free(fuse_opts);
VERIFY(do_umount(vfs, B_FALSE) == 0);
return ENOMEM;
}
has_default_perm = detect_fuseoption(fuse_opts,"default_permissions");
free(fuse_opts);
struct fuse_chan *ch = fuse_mount(dir, &args);
if(ch == NULL) {
VERIFY(do_umount(vfs, B_FALSE) == 0);
return EIO;
}
if (has_default_perm)
vfs->fuse_attribute = FUSE_VFS_HAS_DEFAULT_PERM;
struct fuse_session *se = fuse_lowlevel_new(&args, &zfs_operations, sizeof(zfs_operations), vfs);
fuse_opt_free_args(&args);
if(se == NULL) {
VERIFY(do_umount(vfs, B_FALSE) == 0); /* ZFSFUSE: FIXME?? */
fuse_unmount(dir,ch);
return EIO;
}
fuse_session_add_chan(se, ch);
if(zfsfuse_newfs(dir, ch) != 0) {
fuse_session_destroy(se);
fuse_unmount(dir,ch);
return EIO;
}
return 0;
}
