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moves mountpoint handling into filesystem: mountpoints are removed during session cleanup

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This commit is contained in:
Falk Werner 2019-04-13 23:09:06 +02:00
parent 1b15f30f2f
commit d33f0f36cc
4 changed files with 62 additions and 55 deletions
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90
lib/webfuse/adapter/impl/filesystem.c
View File

@ -3,6 +3,11 @@
#include "webfuse/adapter/impl/session.h"
#include <libwebsockets.h>
#include <uuid/uuid.h>
#include <sys/stat.h>
#include <unistd.h>
#include <limits.h>
#include <stdlib.h>
#include <stddef.h>
@ -19,36 +24,44 @@ static struct fuse_lowlevel_ops const filesystem_operations =
.read = &wf_impl_operation_read
};
struct wf_impl_filesystem * wf_impl_filesystem_create(
struct wf_impl_session * session,
char const * mount_point)
static char * wf_impl_filesystem_create_id(void)
{
struct wf_impl_filesystem * filesystem = malloc(sizeof(struct wf_impl_filesystem));
if (NULL != filesystem)
{
bool success = wf_impl_filesystem_init(filesystem, session, mount_point);
if (!success)
{
free(filesystem);
filesystem = NULL;
}
uuid_t uuid;
uuid_generate(uuid);
char id[UUID_STR_LEN];
uuid_unparse(uuid, id);
return strdup(id);
}
return filesystem;
}
void wf_impl_filesystem_dispose(
static void wf_impl_filesystem_cleanup(
struct wf_impl_filesystem * filesystem)
{
wf_impl_filesystem_cleanup(filesystem);
free(filesystem);
fuse_session_reset(filesystem->session);
fuse_session_unmount(filesystem->session);
fuse_session_destroy(filesystem->session);
filesystem->session = NULL;
free(filesystem->buffer.mem);
fuse_opt_free_args(&filesystem->args);
struct wf_impl_session * session = filesystem->user_data.session;
char path[PATH_MAX];
snprintf(path, PATH_MAX, "%s/%s/%s", session->mount_point, filesystem->user_data.name, filesystem->id);
rmdir(path);
snprintf(path, PATH_MAX, "%s/%s", session->mount_point, filesystem->user_data.name);
rmdir(path);
free(filesystem->user_data.name);
free(filesystem->id);
}
bool wf_impl_filesystem_init(
static bool wf_impl_filesystem_init(
struct wf_impl_filesystem * filesystem,
struct wf_impl_session * session,
char const * mount_point)
char const * name)
{
bool result = false;
wf_dlist_item_init(&filesystem->item);
@ -60,8 +73,17 @@ bool wf_impl_filesystem_init(
filesystem->user_data.session = session;
filesystem->user_data.timeout = 1.0;
filesystem->user_data.name = strdup(name);
filesystem->id = wf_impl_filesystem_create_id();
memset(&filesystem->buffer, 0, sizeof(struct fuse_buf));
char path[PATH_MAX];
snprintf(path, PATH_MAX, "%s/%s", session->mount_point, name);
mkdir(path, 0755);
snprintf(path, PATH_MAX, "%s/%s/%s", session->mount_point, name, filesystem->id);
mkdir(path, 0755);
filesystem->session = fuse_session_new(
&filesystem->args,
&filesystem_operations,
@ -69,7 +91,7 @@ bool wf_impl_filesystem_init(
&filesystem->user_data);
if (NULL != filesystem->session)
{
result = (0 == fuse_session_mount(filesystem->session, mount_point));
result = (0 == fuse_session_mount(filesystem->session, path));
}
if (result)
@ -90,25 +112,29 @@ bool wf_impl_filesystem_init(
return result;
}
void wf_impl_filesystem_cleanup(
struct wf_impl_filesystem * filesystem)
struct wf_impl_filesystem * wf_impl_filesystem_create(
struct wf_impl_session * session,
char const * name)
{
if (NULL != filesystem->session)
struct wf_impl_filesystem * filesystem = malloc(sizeof(struct wf_impl_filesystem));
if (NULL != filesystem)
{
fuse_session_reset(filesystem->session);
fuse_session_unmount(filesystem->session);
fuse_session_destroy(filesystem->session);
filesystem->session = NULL;
bool success = wf_impl_filesystem_init(filesystem, session, name);
if (!success)
{
free(filesystem);
filesystem = NULL;
}
}
free(filesystem->buffer.mem);
fuse_opt_free_args(&filesystem->args);
return filesystem;
}
int wf_impl_filesystem_get_fd(
void wf_impl_filesystem_dispose(
struct wf_impl_filesystem * filesystem)
{
return fuse_session_fd(filesystem->session);
wf_impl_filesystem_cleanup(filesystem);
free(filesystem);
}
void wf_impl_filesystem_process_request(

15
lib/webfuse/adapter/impl/filesystem.h
View File

@ -25,26 +25,17 @@ struct wf_impl_filesystem
struct fuse_buf buffer;
struct wf_impl_operations_context user_data;
struct lws * wsi;
char * name;
char * id;
};
extern struct wf_impl_filesystem * wf_impl_filesystem_create(
struct wf_impl_session * session,
char const * mount_point);
char const * name);
extern void wf_impl_filesystem_dispose(
struct wf_impl_filesystem * filesystem);
extern bool wf_impl_filesystem_init(
struct wf_impl_filesystem * filesystem,
struct wf_impl_session * session,
char const * mount_point);
extern void wf_impl_filesystem_cleanup(
struct wf_impl_filesystem * filesystem);
extern int wf_impl_filesystem_get_fd(
struct wf_impl_filesystem * filesystem);
extern void wf_impl_filesystem_process_request(
struct wf_impl_filesystem * filesystem);

1
lib/webfuse/adapter/impl/operations.h
View File

@ -14,6 +14,7 @@ struct wf_impl_operations_context
{
struct wf_impl_session * session;
double timeout;
char * name;
};
extern void wf_impl_operation_lookup (

13
lib/webfuse/adapter/impl/session.c
View File

@ -9,8 +9,6 @@
#include "webfuse/core/container_of.h"
#include "webfuse/core/util.h"
#include <uuid/uuid.h>
#include <libwebsockets.h>
#include <stddef.h>
#include <stdlib.h>
@ -103,16 +101,7 @@ bool wf_impl_session_add_filesystem(
struct wf_impl_session * session,
char const * name)
{
uuid_t uuid;
uuid_generate(uuid);
char id[UUID_STR_LEN];
uuid_unparse(uuid, id);
char mount_point[PATH_MAX];
snprintf(mount_point, PATH_MAX, "%s/%s/%s", session->mount_point, name, id);
mkdir(mount_point, 0755);
struct wf_impl_filesystem * filesystem = wf_impl_filesystem_create(session, mount_point);
struct wf_impl_filesystem * filesystem = wf_impl_filesystem_create(session, name);
wf_dlist_prepend(&session->filesystems, &filesystem->item);
return (NULL != filesystem);
}