static pthread_t loadavg_pid = 0;
/* Returns zero on success */
-static int start_loadavg(void) {
+static int start_loadavg(void)
+{
char *error;
pthread_t (*__load_daemon)(int);
- dlerror(); /* Clear any existing error */
-
- __load_daemon = (pthread_t (*)(int)) dlsym(dlopen_handle, "load_daemon");
+ dlerror();
+ __load_daemon = (pthread_t(*)(int))dlsym(dlopen_handle, "load_daemon");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("load_daemon fails:%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to start loadavg daemon", error);
+
loadavg_pid = __load_daemon(1);
- if (loadavg_pid == 0)
+ if (!loadavg_pid)
return -1;
return 0;
}
/* Returns zero on success */
-static int stop_loadavg(void) {
+static int stop_loadavg(void)
+{
char *error;
int (*__stop_load_daemon)(pthread_t);
- __stop_load_daemon = (int (*)(pthread_t)) dlsym(dlopen_handle, "stop_load_daemon");
+ __stop_load_daemon = (int (*)(pthread_t))dlsym(dlopen_handle, "stop_load_daemon");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("stop_load_daemon error: %s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to stop loadavg daemon", error);
- if (__stop_load_daemon(loadavg_pid) != 0)
+ if (__stop_load_daemon(loadavg_pid))
return -1;
return 0;
/* Functions to run the library methods */
static int do_cg_getattr(const char *path, struct stat *sb)
{
- int (*__cg_getattr)(const char *path, struct stat *sb);
char *error;
- dlerror(); /* Clear any existing error */
- __cg_getattr = (int (*)(const char *, struct stat *)) dlsym(dlopen_handle, "cg_getattr");
+ int (*__cg_getattr)(const char *path, struct stat *sb);
+
+ dlerror();
+ __cg_getattr = (int (*)(const char *, struct stat *))dlsym(dlopen_handle, "cg_getattr");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_getattr()", error);
return __cg_getattr(path, sb);
}
static int do_proc_getattr(const char *path, struct stat *sb)
{
- int (*__proc_getattr)(const char *path, struct stat *sb);
char *error;
- dlerror(); /* Clear any existing error */
+ int (*__proc_getattr)(const char *path, struct stat *sb);
+
+ dlerror();
__proc_getattr = (int (*)(const char *, struct stat *)) dlsym(dlopen_handle, "proc_getattr");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find proc_getattr()", error);
return __proc_getattr(path, sb);
}
static int do_sys_getattr(const char *path, struct stat *sb)
{
- int (*__sys_getattr)(const char *path, struct stat *sb);
char *error;
- dlerror(); /* Clear any existing error */
+ int (*__sys_getattr)(const char *path, struct stat *sb);
+
+ dlerror();
__sys_getattr = (int (*)(const char *, struct stat *)) dlsym(dlopen_handle, "sys_getattr");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_getattr()", error);
return __sys_getattr(path, sb);
}
static int do_cg_read(const char *path, char *buf, size_t size, off_t offset,
- struct fuse_file_info *fi)
+ struct fuse_file_info *fi)
{
+ char *error;
int (*__cg_read)(const char *path, char *buf, size_t size, off_t offset,
struct fuse_file_info *fi);
- char *error;
- dlerror(); /* Clear any existing error */
- __cg_read = (int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "cg_read");
+ dlerror();
+ __cg_read = (int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "cg_read");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_read()", error);
return __cg_read(path, buf, size, offset, fi);
}
static int do_proc_read(const char *path, char *buf, size_t size, off_t offset,
struct fuse_file_info *fi)
{
+ char *error;
int (*__proc_read)(const char *path, char *buf, size_t size,
off_t offset, struct fuse_file_info *fi);
- char *error;
- dlerror(); /* Clear any existing error */
- __proc_read = (int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "proc_read");
+ dlerror();
+ __proc_read = (int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "proc_read");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find proc_read()", error);
return __proc_read(path, buf, size, offset, fi);
}
static int do_sys_read(const char *path, char *buf, size_t size, off_t offset,
- struct fuse_file_info *fi)
+ struct fuse_file_info *fi)
{
+ char *error;
int (*__sys_read)(const char *path, char *buf, size_t size,
off_t offset, struct fuse_file_info *fi);
- char *error;
- dlerror(); /* Clear any existing error */
- __sys_read = (int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "sys_read");
+ dlerror();
+ __sys_read = (int (*)(const char *, char *, size_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "sys_read");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_read()", error);
return __sys_read(path, buf, size, offset, fi);
}
-static int do_cg_write(const char *path, const char *buf, size_t size, off_t offset,
- struct fuse_file_info *fi)
+static int do_cg_write(const char *path, const char *buf, size_t size,
+ off_t offset, struct fuse_file_info *fi)
{
+ char *error;
int (*__cg_write)(const char *path, const char *buf, size_t size,
off_t offset, struct fuse_file_info *fi);
- char *error;
- dlerror(); /* Clear any existing error */
- __cg_write = (int (*)(const char *, const char *, size_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "cg_write");
+
+ dlerror();
+ __cg_write = (int (*)(const char *, const char *, size_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "cg_write");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_write()", error);
return __cg_write(path, buf, size, offset, fi);
}
static int do_cg_mkdir(const char *path, mode_t mode)
{
- int (*__cg_mkdir)(const char *path, mode_t mode);
char *error;
+ int (*__cg_mkdir)(const char *path, mode_t mode);
- dlerror(); /* Clear any existing error */
- __cg_mkdir = (int (*)(const char *, mode_t)) dlsym(dlopen_handle, "cg_mkdir");
+ dlerror();
+ __cg_mkdir = (int (*)(const char *, mode_t))dlsym(dlopen_handle, "cg_mkdir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_mkdir()", error);
return __cg_mkdir(path, mode);
}
static int do_cg_chown(const char *path, uid_t uid, gid_t gid)
{
- int (*__cg_chown)(const char *path, uid_t uid, gid_t gid);
char *error;
+ int (*__cg_chown)(const char *path, uid_t uid, gid_t gid);
- dlerror(); /* Clear any existing error */
- __cg_chown = (int (*)(const char *, uid_t, gid_t)) dlsym(dlopen_handle, "cg_chown");
+ dlerror();
+ __cg_chown = (int (*)(const char *, uid_t, gid_t))dlsym(dlopen_handle, "cg_chown");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_chown()", error);
return __cg_chown(path, uid, gid);
}
static int do_cg_rmdir(const char *path)
{
- int (*__cg_rmdir)(const char *path);
char *error;
+ int (*__cg_rmdir)(const char *path);
- dlerror(); /* Clear any existing error */
- __cg_rmdir = (int (*)(const char *path)) dlsym(dlopen_handle, "cg_rmdir");
+ dlerror();
+ __cg_rmdir = (int (*)(const char *path))dlsym(dlopen_handle, "cg_rmdir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_rmdir()", error);
return __cg_rmdir(path);
}
static int do_cg_chmod(const char *path, mode_t mode)
{
- int (*__cg_chmod)(const char *path, mode_t mode);
char *error;
+ int (*__cg_chmod)(const char *path, mode_t mode);
- dlerror(); /* Clear any existing error */
- __cg_chmod = (int (*)(const char *, mode_t)) dlsym(dlopen_handle, "cg_chmod");
+ dlerror();
+ __cg_chmod = (int (*)(const char *, mode_t))dlsym(dlopen_handle, "cg_chmod");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_chmod()", error);
return __cg_chmod(path, mode);
}
static int do_cg_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
+ char *error;
int (*__cg_readdir)(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi);
- char *error;
- dlerror(); /* Clear any existing error */
- __cg_readdir = (int (*)(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "cg_readdir");
+ dlerror();
+ __cg_readdir = (int (*)(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "cg_readdir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_readdir()", error);
return __cg_readdir(path, buf, filler, offset, fi);
}
static int do_proc_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
+ char *error;
int (*__proc_readdir)(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi);
- char *error;
- dlerror(); /* Clear any existing error */
- __proc_readdir = (int (*)(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "proc_readdir");
+ dlerror();
+ __proc_readdir = (int (*)(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "proc_readdir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find proc_readdir()", error);
return __proc_readdir(path, buf, filler, offset, fi);
}
static int do_sys_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
- int (*__sys_readdir)(const char *path, void *buf, fuse_fill_dir_t filler, off_t offset,
- struct fuse_file_info *fi);
char *error;
+ int (*__sys_readdir)(const char *path, void *buf, fuse_fill_dir_t filler,
+ off_t offset, struct fuse_file_info *fi);
- dlerror(); /* Clear any existing error */
- __sys_readdir = (int (*)(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *)) dlsym(dlopen_handle, "sys_readdir");
+ dlerror();
+ __sys_readdir = (int (*)(const char *, void *, fuse_fill_dir_t, off_t, struct fuse_file_info *))dlsym(dlopen_handle, "sys_readdir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_readdir()", error);
return __sys_readdir(path, buf, filler, offset, fi);
}
static int do_cg_open(const char *path, struct fuse_file_info *fi)
{
- int (*__cg_open)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __cg_open = (int (*)(const char *, struct fuse_file_info *)) dlsym(dlopen_handle, "cg_open");
+ int (*__cg_open)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __cg_open = (int (*)(const char *, struct fuse_file_info *))dlsym(dlopen_handle, "cg_open");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_open()", error);
return __cg_open(path, fi);
}
static int do_cg_access(const char *path, int mode)
{
- int (*__cg_access)(const char *path, int mode);
char *error;
- dlerror(); /* Clear any existing error */
- __cg_access = (int (*)(const char *, int mode)) dlsym(dlopen_handle, "cg_access");
+ int (*__cg_access)(const char *path, int mode);
+
+ dlerror();
+ __cg_access = (int (*)(const char *, int mode))dlsym(dlopen_handle, "cg_access");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_access()", error);
return __cg_access(path, mode);
}
static int do_proc_open(const char *path, struct fuse_file_info *fi)
{
- int (*__proc_open)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __proc_open = (int (*)(const char *path, struct fuse_file_info *fi)) dlsym(dlopen_handle, "proc_open");
+ int (*__proc_open)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __proc_open = (int (*)(const char *path, struct fuse_file_info *fi))dlsym(dlopen_handle, "proc_open");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find proc_open()", error);
return __proc_open(path, fi);
}
static int do_proc_access(const char *path, int mode)
{
- int (*__proc_access)(const char *path, int mode);
char *error;
- dlerror(); /* Clear any existing error */
- __proc_access = (int (*)(const char *, int mode)) dlsym(dlopen_handle, "proc_access");
+ int (*__proc_access)(const char *path, int mode);
+
+ dlerror();
+ __proc_access = (int (*)(const char *, int mode))dlsym(dlopen_handle, "proc_access");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find proc_access()", error);
return __proc_access(path, mode);
}
static int do_sys_open(const char *path, struct fuse_file_info *fi)
{
- int (*__sys_open)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __sys_open = (int (*)(const char *path, struct fuse_file_info *fi)) dlsym(dlopen_handle, "sys_open");
+ int (*__sys_open)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __sys_open = (int (*)(const char *path, struct fuse_file_info *fi))dlsym(dlopen_handle, "sys_open");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_open()", error);
return __sys_open(path, fi);
}
static int do_sys_access(const char *path, int mode)
{
- int (*__sys_access)(const char *path, int mode);
char *error;
- dlerror(); /* Clear any existing error */
- __sys_access = (int (*)(const char *, int mode)) dlsym(dlopen_handle, "sys_access");
+ int (*__sys_access)(const char *path, int mode);
+
+ dlerror();
+ __sys_access = (int (*)(const char *, int mode))dlsym(dlopen_handle, "sys_access");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_access()", error);
return __sys_access(path, mode);
}
static int do_cg_release(const char *path, struct fuse_file_info *fi)
{
- int (*__cg_release)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __cg_release = (int (*)(const char *path, struct fuse_file_info *)) dlsym(dlopen_handle, "cg_release");
+ int (*__cg_release)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __cg_release = (int (*)(const char *path, struct fuse_file_info *))dlsym(dlopen_handle, "cg_release");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_release()", error);
return __cg_release(path, fi);
}
static int do_proc_release(const char *path, struct fuse_file_info *fi)
{
- int (*__proc_release)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
+ int (*__proc_release)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
__proc_release = (int (*)(const char *path, struct fuse_file_info *)) dlsym(dlopen_handle, "proc_release");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find proc_release()", error);
return __proc_release(path, fi);
}
static int do_sys_release(const char *path, struct fuse_file_info *fi)
{
- int (*__sys_release)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __sys_release = (int (*)(const char *path, struct fuse_file_info *)) dlsym(dlopen_handle, "sys_release");
+ int (*__sys_release)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __sys_release = (int (*)(const char *path, struct fuse_file_info *))dlsym(dlopen_handle, "sys_release");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_release()", error);
return __sys_release(path, fi);
}
static int do_cg_opendir(const char *path, struct fuse_file_info *fi)
{
- int (*__cg_opendir)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __cg_opendir = (int (*)(const char *path, struct fuse_file_info *fi)) dlsym(dlopen_handle, "cg_opendir");
+ int (*__cg_opendir)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __cg_opendir = (int (*)(const char *path, struct fuse_file_info *fi))dlsym(dlopen_handle, "cg_opendir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_opendir()", error);
return __cg_opendir(path, fi);
}
static int do_cg_releasedir(const char *path, struct fuse_file_info *fi)
{
- int (*__cg_releasedir)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __cg_releasedir = (int (*)(const char *path, struct fuse_file_info *)) dlsym(dlopen_handle, "cg_releasedir");
+ int (*__cg_releasedir)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __cg_releasedir = (int (*)(const char *path, struct fuse_file_info *))dlsym(dlopen_handle, "cg_releasedir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find cg_releasedir()", error);
return __cg_releasedir(path, fi);
}
static int do_sys_releasedir(const char *path, struct fuse_file_info *fi)
{
- int (*__sys_releasedir)(const char *path, struct fuse_file_info *fi);
char *error;
- dlerror(); /* Clear any existing error */
- __sys_releasedir = (int (*)(const char *path, struct fuse_file_info *)) dlsym(dlopen_handle, "sys_releasedir");
+ int (*__sys_releasedir)(const char *path, struct fuse_file_info *fi);
+
+ dlerror();
+ __sys_releasedir = (int (*)(const char *path, struct fuse_file_info *))dlsym(dlopen_handle, "sys_releasedir");
error = dlerror();
- if (error != NULL) {
- lxcfs_error("%s\n", error);
- return -1;
- }
+ if (error)
+ return log_error(-1, "%s - Failed to find sys_releasedir()", error);
return __sys_releasedir(path, fi);
}
-/*
- * FUSE ops for /
- * these just delegate to the /proc and /cgroup ops as
- * needed
- */
-
static int lxcfs_getattr(const char *path, struct stat *sb)
{
int ret;
down_users();
return ret;
}
+
if (strncmp(path, "/proc", 5) == 0) {
up_users();
ret = do_proc_getattr(path, sb);
down_users();
return ret;
}
+
if (strncmp(path, "/sys", 4) == 0) {
up_users();
ret = do_sys_getattr(path, sb);
down_users();
return ret;
}
+
return -ENOENT;
}
static int lxcfs_opendir(const char *path, struct fuse_file_info *fi)
{
int ret;
+
if (strcmp(path, "/") == 0)
return 0;
down_users();
return ret;
}
+
if (strcmp(path, "/proc") == 0)
return 0;
+
if (strncmp(path, "/sys", 4) == 0)
return 0;
return -ENOENT;
}
-static int lxcfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler, off_t offset,
- struct fuse_file_info *fi)
+static int lxcfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
+ off_t offset, struct fuse_file_info *fi)
{
int ret;
+
if (strcmp(path, "/") == 0) {
if (filler(buf, ".", NULL, 0) != 0 ||
filler(buf, "..", NULL, 0) != 0 ||
filler(buf, "sys", NULL, 0) != 0 ||
filler(buf, "cgroup", NULL, 0) != 0)
return -ENOMEM;
+
return 0;
}
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_readdir(path, buf, filler, offset, fi);
down_users();
return ret;
}
+
if (strcmp(path, "/proc") == 0) {
up_users();
ret = do_proc_readdir(path, buf, filler, offset, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/proc", 5) == 0) {
up_users();
ret = do_proc_access(path, mode);
down_users();
return ret;
}
+
if (strncmp(path, "/sys", 4) == 0) {
up_users();
ret = do_sys_access(path, mode);
return ret;
}
-
return -EACCES;
}
static int lxcfs_releasedir(const char *path, struct fuse_file_info *fi)
{
int ret;
+
if (strcmp(path, "/") == 0)
return 0;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_releasedir(path, fi);
down_users();
return ret;
}
+
if (strcmp(path, "/proc") == 0)
return 0;
- if (strncmp(path, "/sys", 4) == 0){
+
+ if (strncmp(path, "/sys", 4) == 0) {
up_users();
ret = do_sys_releasedir(path, fi);
down_users();
static int lxcfs_open(const char *path, struct fuse_file_info *fi)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_open(path, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/proc", 5) == 0) {
up_users();
ret = do_proc_open(path, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/sys", 4) == 0) {
up_users();
ret = do_sys_open(path, fi);
return ret;
}
-
return -EACCES;
}
static int lxcfs_read(const char *path, char *buf, size_t size, off_t offset,
- struct fuse_file_info *fi)
+ struct fuse_file_info *fi)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_read(path, buf, size, offset, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/proc", 5) == 0) {
up_users();
ret = do_proc_read(path, buf, size, offset, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/sys", 4) == 0) {
up_users();
ret = do_sys_read(path, buf, size, offset, fi);
return ret;
}
-
return -EINVAL;
}
int lxcfs_write(const char *path, const char *buf, size_t size, off_t offset,
- struct fuse_file_info *fi)
+ struct fuse_file_info *fi)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_write(path, buf, size, offset, fi);
static int lxcfs_release(const char *path, struct fuse_file_info *fi)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_release(path, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/proc", 5) == 0) {
up_users();
ret = do_proc_release(path, fi);
down_users();
return ret;
}
+
if (strncmp(path, "/sys", 4) == 0) {
up_users();
ret = do_sys_release(path, fi);
return ret;
}
-
return -EINVAL;
}
int lxcfs_mkdir(const char *path, mode_t mode)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_mkdir(path, mode);
int lxcfs_chown(const char *path, uid_t uid, gid_t gid)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_chown(path, uid, gid);
if (strncmp(path, "/sys", 4) == 0)
return -EPERM;
+
return -ENOENT;
}
{
if (strncmp(path, "/cgroup", 7) == 0)
return 0;
+
return -EPERM;
}
int lxcfs_rmdir(const char *path)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_rmdir(path);
down_users();
return ret;
}
+
return -EPERM;
}
int lxcfs_chmod(const char *path, mode_t mode)
{
int ret;
+
if (strncmp(path, "/cgroup", 7) == 0) {
up_users();
ret = do_cg_chmod(path, mode);
}
const struct fuse_operations lxcfs_ops = {
- .getattr = lxcfs_getattr,
- .readlink = NULL,
- .getdir = NULL,
- .mknod = NULL,
- .mkdir = lxcfs_mkdir,
- .unlink = NULL,
- .rmdir = lxcfs_rmdir,
- .symlink = NULL,
- .rename = NULL,
- .link = NULL,
- .chmod = lxcfs_chmod,
- .chown = lxcfs_chown,
- .truncate = lxcfs_truncate,
- .utime = NULL,
-
- .open = lxcfs_open,
- .read = lxcfs_read,
- .release = lxcfs_release,
- .write = lxcfs_write,
-
- .statfs = NULL,
- .flush = lxcfs_flush,
- .fsync = lxcfs_fsync,
-
- .setxattr = NULL,
- .getxattr = NULL,
- .listxattr = NULL,
- .removexattr = NULL,
-
- .opendir = lxcfs_opendir,
- .readdir = lxcfs_readdir,
- .releasedir = lxcfs_releasedir,
-
- .fsyncdir = NULL,
- .init = NULL,
- .destroy = NULL,
- .access = lxcfs_access,
- .create = NULL,
- .ftruncate = NULL,
- .fgetattr = NULL,
+ .access = lxcfs_access,
+ .chmod = lxcfs_chmod,
+ .chown = lxcfs_chown,
+ .flush = lxcfs_flush,
+ .fsync = lxcfs_fsync,
+ .getattr = lxcfs_getattr,
+ .mkdir = lxcfs_mkdir,
+ .open = lxcfs_open,
+ .opendir = lxcfs_opendir,
+ .read = lxcfs_read,
+ .readdir = lxcfs_readdir,
+ .release = lxcfs_release,
+ .releasedir = lxcfs_releasedir,
+ .rmdir = lxcfs_rmdir,
+ .truncate = lxcfs_truncate,
+ .write = lxcfs_write,
+
+ .create = NULL,
+ .destroy = NULL,
+ .fgetattr = NULL,
+ .fsyncdir = NULL,
+ .ftruncate = NULL,
+ .getdir = NULL,
+ .getxattr = NULL,
+ .init = NULL,
+ .link = NULL,
+ .listxattr = NULL,
+ .mknod = NULL,
+ .readlink = NULL,
+ .rename = NULL,
+ .removexattr = NULL,
+ .setxattr = NULL,
+ .statfs = NULL,
+ .symlink = NULL,
+ .unlink = NULL,
+ .utime = NULL,
};
static void usage()
exit(1);
}
-static bool is_help(char *w)
+static inline bool is_help(char *w)
{
- if (strcmp(w, "-h") == 0 ||
- strcmp(w, "--help") == 0 ||
- strcmp(w, "-help") == 0 ||
- strcmp(w, "help") == 0)
- return true;
- return false;
+ return strcmp(w, "-h") == 0 ||
+ strcmp(w, "--help") == 0 ||
+ strcmp(w, "-help") == 0 ||
+ strcmp(w, "help") == 0;
}
-static bool is_version(char *w)
+static inline bool is_version(char *w)
{
- if (strcmp(w, "-v") == 0 ||
- strcmp(w, "--version") == 0 ||
- strcmp(w, "-version") == 0 ||
- strcmp(w, "version") == 0)
- return true;
- return false;
+ return strcmp(w, "-v") == 0 ||
+ strcmp(w, "--version") == 0 ||
+ strcmp(w, "-version") == 0 ||
+ strcmp(w, "version") == 0;
}
-bool swallow_arg(int *argcp, char *argv[], char *which)
+static bool swallow_arg(int *argcp, char *argv[], char *which)
{
- int i;
-
- for (i = 1; argv[i]; i++) {
+ for (int i = 1; argv[i]; i++) {
if (strcmp(argv[i], which) != 0)
continue;
- for (; argv[i]; i++) {
- argv[i] = argv[i+1];
- }
+
+ for (; argv[i]; i++)
+ argv[i] = argv[i + 1];
+
(*argcp)--;
return true;
}
+
return false;
}
-bool swallow_option(int *argcp, char *argv[], char *opt, char **v)
+static bool swallow_option(int *argcp, char *argv[], char *opt, char **v)
{
- int i;
-
- for (i = 1; argv[i]; i++) {
- if (!argv[i+1])
+ for (int i = 1; argv[i]; i++) {
+ if (!argv[i + 1])
continue;
+
if (strcmp(argv[i], opt) != 0)
continue;
+
do {
- *v = strdup(argv[i+1]);
+ *v = strdup(argv[i + 1]);
} while (!*v);
- for (; argv[i+1]; i++) {
- argv[i] = argv[i+2];
- }
+
+ for (; argv[i + 1]; i++)
+ argv[i] = argv[i + 2];
+
(*argcp) -= 2;
return true;
}
+
return false;
}
static int set_pidfile(char *pidfile)
{
__do_close_prot_errno int fd = -EBADF;
- char buf[50];
- struct flock fl;
-
- fl.l_type = F_WRLCK;
- fl.l_whence = SEEK_SET;
- fl.l_start = 0;
- fl.l_len = 0;
+ char buf[INTTYPE_TO_STRLEN(long)];
+ int ret;
+ struct flock fl = {
+ fl.l_type = F_WRLCK,
+ fl.l_whence = SEEK_SET,
+ fl.l_start = 0,
+ fl.l_len = 0,
+ };
fd = open(pidfile, O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
- if (fd == -1) {
- fprintf(stderr, "Could not open pidfile %s: %m\n", pidfile);
- return -1;
- }
+ if (fd < 0)
+ return log_error(-1, "Could not open pidfile %s: %m", pidfile);
- if (fcntl(fd, F_SETLK, &fl) == -1) {
+ if (fcntl(fd, F_SETLK, &fl) < 0) {
if (errno == EAGAIN || errno == EACCES)
- return log_error_errno(-1,
- errno, "PID file '%s' is already locked",
- pidfile);
- fprintf(stderr, "Warning; unable to lock PID file, proceeding");
+ return log_error(-1, "PID file '%s' is already locked", pidfile);
+ lxcfs_error("Warning; unable to lock PID file, proceeding");
}
if (ftruncate(fd, 0))
- return log_error_errno(-1, errno,
- "Error truncating PID file '%s': %m",
- pidfile);
+ return log_error(-1, "Error truncating PID file '%s': %m", pidfile);
+
+ ret = snprintf(buf, sizeof(buf), "%ld\n", (long)getpid());
+ if (ret < 0 || ret >= sizeof(buf))
+ return log_error(-1, "Failed to convert pid to string %m");
- snprintf(buf, 50, "%ld\n", (long)getpid());
- if (write(fd, buf, strlen(buf)) != strlen(buf))
- return log_error_errno(-1, errno,
- "Error writing to PID file '%s': %m",
- pidfile);
+ if (write(fd, buf, ret) != ret)
+ return log_error(-1, "Error writing to PID file '%s': %m", pidfile);
return move_fd(fd);
}
opts = malloc(sizeof(struct lxcfs_opts));
if (opts == NULL) {
- fprintf(stderr, "Error allocating memory for options.\n");
+ lxcfs_error("Error allocating memory for options");
goto out;
}
opts->swap_off = false;
nonempty = true;
} else {
free(v);
- fprintf(stderr, "Warning: unexpected fuse option %s\n", v);
+ lxcfs_error("Warning: unexpected fuse option %s", v);
exit(EXIT_FAILURE);
}
}
do_reload();
if (signal(SIGUSR1, reload_handler) == SIG_ERR) {
- fprintf(stderr, "Error setting USR1 signal handler: %m\n");
+ lxcfs_error("Error setting USR1 signal handler: %m");
goto out;
}
projects / mirror_lxcfs.git / commitdiff