In message <20121203095534.gl10...@pengutronix.de> Sascha Hauer wrote: > On Fri, Nov 30, 2012 at 07:03:36PM +0800, 张忠山 wrote: > > the function uncompress_fd_to_buf has no parameter to return > > the uncompressed length, How to get the uncompressed content > > length? > > AFAIK the uncompressed size is not contained in the compressed data > You would have to uncompress to a file and use this afterwards. > If I understand correctly you want to load a FPGA firmware which you > have in compressed form. What I would do is: > > - uncompress the firmware in a script rather than uncompress it from > C code. > - write a command to flash the firmware. > But if uncompress it to a device file, like /dev/tmpmem. the file size is the device size, not the uncompressed size.
So now I uncompressed it to a file in C code using uncompress_fd_to_fd, then use lseek to get the current position of target file. That is the uncompressed size. -- Best Regards, zzs _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
