Re: [U-Boot] [PATCH] Fix gunzip in case of insufficient output buffer
Dear Matthias Fuchs, In message <200901021511.42036.matthias.fu...@esd-electronics.com> you wrote: > U-Boot's gunzip() function does not handle the return code > of zlib's inflate() function correctly. gunzip() is implemented > to uncompress all input data in one run. So the correct return > code for the good case is Z_STREAM_END. In case of insufficient > output buffer memory inflate returns Z_OK. For gunzip() this > is an error. > > It also makes sense to me to call inflateEnd() also in case > of an error. > > Signed-off-by: Matthias Fuchs > --- > common/cmd_bootm.c |2 +- > lib_generic/gunzip.c |3 ++- > 2 files changed, 3 insertions(+), 2 deletions(-) Applied, thanks. Best regards, Wolfgang Denk -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de HEALTH WARNING: Care Should Be Taken When Lifting This Product, Since Its Mass, and Thus Its Weight, Is Dependent on Its Velocity Relative to the User. ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
Re: [U-Boot] [PATCH] Fix gunzip in case of insufficient output buffer
Hi, did anybody check my gunzip fix? I'm not a zlib expert, but I think we have a little issue here. Matthias On Friday 02 January 2009 15:11, Matthias Fuchs wrote: > U-Boot's gunzip() function does not handle the return code > of zlib's inflate() function correctly. gunzip() is implemented > to uncompress all input data in one run. So the correct return > code for the good case is Z_STREAM_END. In case of insufficient > output buffer memory inflate returns Z_OK. For gunzip() this > is an error. > > It also makes sense to me to call inflateEnd() also in case > of an error. > > Signed-off-by: Matthias Fuchs > --- > common/cmd_bootm.c |2 +- > lib_generic/gunzip.c |3 ++- > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c > index a8f85e9..9055672 100644 > --- a/common/cmd_bootm.c > +++ b/common/cmd_bootm.c > @@ -350,7 +350,7 @@ static int bootm_load_os(image_info_t os, ulong > *load_end, int boot_progress) > printf (" Uncompressing %s ... ", type_name); > if (gunzip ((void *)load, unc_len, > (uchar *)image_start, &image_len) != 0) > { > - puts ("GUNZIP: uncompress or overwrite error " > + puts ("GUNZIP: uncompress, out-of-mem or overwrite > error " > "- must RESET board to recover\n"); > if (boot_progress) > show_boot_progress (-6); > diff --git a/lib_generic/gunzip.c b/lib_generic/gunzip.c > index 74f0bf9..5bcf5b7 100644 > --- a/lib_generic/gunzip.c > +++ b/lib_generic/gunzip.c > @@ -102,8 +102,9 @@ int gunzip(void *dst, int dstlen, unsigned char *src, > unsigned long *lenp) > s.next_out = dst; > s.avail_out = dstlen; > r = inflate(&s, Z_FINISH); > - if (r != Z_OK && r != Z_STREAM_END) { > + if (r != Z_STREAM_END) { > printf ("Error: inflate() returned %d\n", r); > + inflateEnd(&s); > return (-1); > } > *lenp = s.next_out - (unsigned char *) dst; ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
[U-Boot] [PATCH] Fix gunzip in case of insufficient output buffer
U-Boot's gunzip() function does not handle the return code of zlib's inflate() function correctly. gunzip() is implemented to uncompress all input data in one run. So the correct return code for the good case is Z_STREAM_END. In case of insufficient output buffer memory inflate returns Z_OK. For gunzip() this is an error. It also makes sense to me to call inflateEnd() also in case of an error. Signed-off-by: Matthias Fuchs --- common/cmd_bootm.c |2 +- lib_generic/gunzip.c |3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c index a8f85e9..9055672 100644 --- a/common/cmd_bootm.c +++ b/common/cmd_bootm.c @@ -350,7 +350,7 @@ static int bootm_load_os(image_info_t os, ulong *load_end, int boot_progress) printf (" Uncompressing %s ... ", type_name); if (gunzip ((void *)load, unc_len, (uchar *)image_start, &image_len) != 0) { - puts ("GUNZIP: uncompress or overwrite error " + puts ("GUNZIP: uncompress, out-of-mem or overwrite error " "- must RESET board to recover\n"); if (boot_progress) show_boot_progress (-6); diff --git a/lib_generic/gunzip.c b/lib_generic/gunzip.c index 74f0bf9..5bcf5b7 100644 --- a/lib_generic/gunzip.c +++ b/lib_generic/gunzip.c @@ -102,8 +102,9 @@ int gunzip(void *dst, int dstlen, unsigned char *src, unsigned long *lenp) s.next_out = dst; s.avail_out = dstlen; r = inflate(&s, Z_FINISH); - if (r != Z_OK && r != Z_STREAM_END) { + if (r != Z_STREAM_END) { printf ("Error: inflate() returned %d\n", r); + inflateEnd(&s); return (-1); } *lenp = s.next_out - (unsigned char *) dst; -- 1.5.6.3 ___ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot