59 lines
1.9 KiB
Diff
59 lines
1.9 KiB
Diff
From 28dd64a0e1a9cffcde7799f2849b66c0e16bb9cc Mon Sep 17 00:00:00 2001
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From: Denys Vlasenko <vda.linux@googlemail.com>
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Date: Fri, 10 Jan 2014 14:06:57 +0100
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Subject: [PATCH] libarchive: open_zipped() does not need to check extensions
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for e.g. gzip
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We only need to check for signature-less extensions,
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currently only .lzma. The rest can be happily autodetected.
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This fixes "zcat FILE_WITHOUT_GZ_EXT" case, among others.
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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(cherry picked from commit 7c47b560a8fc97956dd8132bd7f1863d83c19866)
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Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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---
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archival/libarchive/open_transformer.c | 23 +++++++++++------------
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1 file changed, 11 insertions(+), 12 deletions(-)
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--- a/archival/libarchive/open_transformer.c
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+++ b/archival/libarchive/open_transformer.c
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@@ -182,27 +182,26 @@ int FAST_FUNC setup_unzip_on_fd(int fd,
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int FAST_FUNC open_zipped(const char *fname)
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{
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- char *sfx;
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int fd;
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fd = open(fname, O_RDONLY);
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if (fd < 0)
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return fd;
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- sfx = strrchr(fname, '.');
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- if (sfx) {
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- sfx++;
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- if (ENABLE_FEATURE_SEAMLESS_LZMA && strcmp(sfx, "lzma") == 0)
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- /* .lzma has no header/signature, just trust it */
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+ if (ENABLE_FEATURE_SEAMLESS_LZMA) {
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+ /* .lzma has no header/signature, can only detect it by extension */
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+ char *sfx = strrchr(fname, '.');
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+ if (sfx && strcmp(sfx+1, "lzma") == 0) {
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open_transformer_with_sig(fd, unpack_lzma_stream, "unlzma");
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- else
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- if ((ENABLE_FEATURE_SEAMLESS_GZ && strcmp(sfx, "gz") == 0)
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- || (ENABLE_FEATURE_SEAMLESS_BZ2 && strcmp(sfx, "bz2") == 0)
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- || (ENABLE_FEATURE_SEAMLESS_XZ && strcmp(sfx, "xz") == 0)
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- ) {
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- setup_unzip_on_fd(fd, /*fail_if_not_detected:*/ 1);
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+ return fd;
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}
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}
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+ if ((ENABLE_FEATURE_SEAMLESS_GZ)
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+ || (ENABLE_FEATURE_SEAMLESS_BZ2)
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+ || (ENABLE_FEATURE_SEAMLESS_XZ)
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+ ) {
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+ setup_unzip_on_fd(fd, /*fail_if_not_detected:*/ 1);
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+ }
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return fd;
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}
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