Falk Werner
4 years ago
parent
6a94cea6f9
commit
cfadf85f49
@ -0,0 +1,123 @@
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#include "webfuse/adapter/impl/uuid_mountpoint.h"
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#include "webfuse/adapter/impl/mountpoint.h"
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#include "webfuse/core/string.h"
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#include <uuid/uuid.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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struct wf_impl_uuid_mountpoint_data
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{
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char * id;
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char * filesystem_path;
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char * default_path;
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char * full_path;
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};
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static char * wf_impl_uuid_mountpoint_create_id(void)
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{
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uuid_t uuid;
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uuid_generate(uuid);
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char id[UUID_STR_LEN];
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uuid_unparse(uuid, id);
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return strdup(id);
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}
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static bool wf_impl_uuid_mountpoint_is_link_broken(char const * path, char const * id)
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{
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bool result = false;
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char buffer[UUID_STR_LEN];
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ssize_t count = readlink(path, buffer, UUID_STR_LEN);
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if ((0 < count) && (count < UUID_STR_LEN))
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{
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buffer[count] = '\0';
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result = (0 == strcmp(buffer, id));
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}
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return result;
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}
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static bool wf_impl_uuid_mountpoint_link_first_subdir(
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char const * link_path,
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char const * path)
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{
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bool result = false;
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DIR * dir = opendir(path);
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if (NULL != dir)
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{
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struct dirent * entry = readdir(dir);
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while (NULL != entry)
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{
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if ((DT_DIR == entry->d_type) && ('.' != entry->d_name[0]))
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{
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symlink(entry->d_name, link_path);
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result = true;
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break;
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}
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entry = readdir(dir);
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}
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closedir(dir);
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}
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return result;
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}
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static void
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wf_impl_uuid_mountpoint_data_dispose(
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void * user_data)
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{
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struct wf_impl_uuid_mountpoint_data * data = user_data;
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rmdir(data->full_path);
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if (wf_impl_filesystem_is_link_broken(data->default_path, data->id))
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{
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unlink(data->default_path);
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bool const success = wf_impl_filesystem_link_first_subdir(data->default_path, data->filesystem_path);
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if (!success)
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{
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rmdir(data->filesystem_path);
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}
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}
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free(data->id);
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free(data->filesystem_path);
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free(data->default_path);
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free(data->full_path);
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free(data);
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}
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struct wf_mountpoint *
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wf_impl_uuid_mountpoint_create(
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char const * root_path,
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char const * filesystem)
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{
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struct wf_impl_uuid_mountpoint_data * data = malloc(sizeof(struct wf_impl_uuid_mountpoint_data));
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data->filesystem_path = wf_create_string("%s/%s", root_path, filesystem);
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mkdir(data->filesystem_path, 0755);
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data->id = wf_impl_uuid_mountpoint_create_id();
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char * full_path = wf_create_string("%s/%s/%s", root_path, filesystem, data->id);
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mkdir(data->full_path, 0755);
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data->default_path = wf_create_string("%s/%s/default", root_path, data->filesystem_path);
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symlink(data->id, data->default_path);
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struct wf_mountpoint * mountpoint = wf_impl_mountpoint_create(full_path);
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wf_impl_mountpoint_set_userdata(mountpoint, data, &wf_impl_uuid_mountpoint_data_dispose);
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return mountpoint;
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}
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@ -0,0 +1,20 @@
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#ifndef WF_IMPL_UUID_MOUNTPOINT_H
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#define WF_IMPL_UUID_MOUNTPOINT_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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struct wf_mountpoint;
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extern struct wf_mountpoint *
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wf_impl_uuid_mountpoint_create(
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char const * root_path,
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char const * filesystem);
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#ifdef __cplusplus
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}
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#endif
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#endif
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@ -0,0 +1,47 @@
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#include "webfuse/adapter/impl/uuid_mountpoint_factory.h"
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#include "webfuse/adapter/impl/uuid_mountpoint.h"
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <string.h>
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struct wf_impl_uuid_mountpoint_factory
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{
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char * root_path;
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};
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void *
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wf_impl_uuid_mountpoint_factory_create(
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char * root_path)
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{
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mkdir(root_path, 0755);
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struct wf_impl_uuid_mountpoint_factory * factory = malloc(sizeof(struct wf_impl_uuid_mountpoint_factory));
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factory->root_path = strdup(root_path);
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return factory;
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}
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void
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wf_impl_uuid_mountpoint_factory_dispose(
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void * user_data)
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{
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struct wf_impl_uuid_mountpoint_factory * factory = user_data;
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rmdir(factory->root_path);
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free(factory->root_path);
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free(factory);
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}
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struct wf_mountpoint *
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wf_impl_uuid_mountpoint_factory_create_mountpoint(
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char const * filesystem,
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void * user_data)
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{
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struct wf_impl_uuid_mountpoint_factory * factory = user_data;
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return wf_impl_uuid_mountpoint_create(factory->root_path, filesystem);
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}
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@ -0,0 +1,29 @@
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#ifndef WF_IMPL_UUID_MOUNTPOINT_FACTORY_H
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#define WF_IMPL_UUID_MOUNTPOINT_FACTORY_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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struct wf_mountpoint;
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extern void *
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wf_impl_uuid_mountpoint_factory_create(
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char * root_path);
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extern void
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wf_impl_uuid_mountpoint_factory_dispose(
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void * user_data);
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extern struct wf_mountpoint *
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wf_impl_uuid_mountpoint_factory_create_mountpiont(
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char const * filesystem,
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void * user_data);
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#ifdef __cplusplus
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}
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#endif
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#endif
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