static int fuse_operations_mount_ftruncate_size(struct MountsPublicInterface* this_, int fd, off_t length) {
int ret;
struct FuseOperationsMount* fs = (struct FuseOperationsMount*)this_;
const struct OpenFileDescription* ofd = fs->handle_allocator->ofd(fd);
if (ofd==NULL) {
SET_ERRNO(ENOENT);
return -1;
}
struct FuseFileOptionalData *fdata = (struct FuseFileOptionalData *)ofd->optional_data;
struct stat st;
CHECK_FUNC_ENSURE_EXIST(fs, ftruncate);
GET_STAT_ENSURE_EXIST(fs, fdata->path, &st);
if ( S_ISDIR(st.st_mode) ) {
SET_ERRNO(EISDIR);
return -1;
}
int flags = ofd->flags & O_ACCMODE;
/*check if file was not opened for writing*/
if ( flags!=O_WRONLY && flags!=O_RDWR ) {
ZRT_LOG(L_ERROR, "file open flags=%s not allow truncate",
STR_FILE_OPEN_FLAGS(flags));
SET_ERRNO( EINVAL );
return -1;
}
if ( (ret=fs->fuse_operations->ftruncate(fdata->path, length, fdata->finfo )) < 0 ) {
SET_ERRNO(-ret);
return -1;
}
return ret;
}
int zrt_zcall_enhanced_open(const char *name, int flags, mode_t mode, int *newfd){
LOG_SYSCALL_START("name=%s flags=%d mode=%o(octal)", name, flags, mode );
char* absolute_path;
char temp_path[PATH_MAX];
int ret=-1;
errno=0;
VALIDATE_SYSCALL_PTR(name);
/*reset mode bits, that is not actual for permissions*/
mode&=(S_IRWXU|S_IRWXG|S_IRWXO);
APPLY_UMASK(&mode);
if ( (absolute_path = zrealpath(name, temp_path)) != NULL ){
ZRT_LOG(L_SHORT, "absolute_path=%s", absolute_path);
if ( (ret = s_transparent_mount->open(s_transparent_mount, absolute_path, flags, mode )) >= 0 ){
/*get fd by pointer*/
*newfd = ret;
ret =0;
}
}
LOG_SHORT_SYSCALL_FINISH( ret,
"*newfd=%d, name=%s, flags=%s, mode=%s",
*newfd, name,
STR_ALLOCA_COPY(STR_FILE_OPEN_FLAGS(flags)),
STR_ALLOCA_COPY(STR_STAT_ST_MODE(mode)));
return ret;
}
