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libarchive: fix open_zipped()

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Last commit broke it (on both MMU and NOMMU)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-06-20 11:42:00 +02:00
parent 984b0a613a
commit df3ec0e2f7
1 changed files with 12 additions and 7 deletions
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19
archival/libarchive/open_transformer.c
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@ -220,7 +220,6 @@ static transformer_state_t *setup_transformer_on_fd(int fd, int fail_if_not_comp
*/
// USE_FOR_MMU(xstate->xformer = copy_stream;)
// USE_FOR_NOMMU(xstate->xformer_prog = "cat";)
/* fall through to seeking bck over bytes we read earlier */
found_magic:
return xstate;
@ -289,16 +288,22 @@ int FAST_FUNC open_zipped(const char *fname, int fail_if_not_compressed)
return -1;
fd = xstate->src_fd;
if (xstate->xformer) {
# if BB_MMU
fork_transformer_with_no_sig(xstate->src_fd, xstate->xformer);
# else
if (xstate->xformer) {
fork_transformer_with_no_sig(fd, xstate->xformer);
} else {
/* the file is not compressed */
xlseek(fd, - xstate->signature_skipped, SEEK_CUR);
xstate->signature_skipped = 0;
fork_transformer_with_sig(xstate->src_fd, xstate->xformer, xstate->xformer_prog);
# endif
}
/* else: the file is not compressed */
# else
/* NOMMU can't avoid the seek :( */
xlseek(fd, - xstate->signature_skipped, SEEK_CUR);
xstate->signature_skipped = 0;
if (xstate->xformer) {
fork_transformer_with_sig(fd, xstate->xformer, xstate->xformer_prog);
} /* esle: the file is not compressed */
# endif
free(xstate);
return fd;