96 lines
3.0 KiB
Diff
96 lines
3.0 KiB
Diff
From 6cad4e56a930034765f8e79ba2eaa2ff1cd8394f Mon Sep 17 00:00:00 2001
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From: Mark Wielaard <mark@klomp.org>
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Date: Sat, 22 Apr 2023 01:45:43 +0200
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Subject: [PATCH] elfcompress: Don't compress if section already compressed
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unless forced
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Before commit a5b07cdf9 "support ZSTD compression algorithm"
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elfcompress would not try to compress a section if it already
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had the requested compression type (or was already uncompressed)
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unless the --force flag was given. An else if construct was changed
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to an if in the commit causing elfcompress to warn (in verbose mode)
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but then still try to (re)compress the section.
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Add an explicit check so if nothing needs (un)compressing, the file
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isn't changed.
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The diff looks large, but git diff -b -w is just:
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+ if (force || type != schtype)
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+ {
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if (shdr->sh_type != SHT_NOBITS
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&& (shdr->sh_flags & SHF_ALLOC) == 0)
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{
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@@ -554,6 +556,7 @@ process_file (const char *fname)
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printf ("[%zd] %s ignoring %s section\n", ndx, sname,
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(shdr->sh_type == SHT_NOBITS ? "no bits" : "allocated"));
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}
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+ }
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Signed-off-by: Mark Wielaard <mark@klomp.org>
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---
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src/elfcompress.c | 43 +++++++++++++++++++++++--------------------
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1 file changed, 23 insertions(+), 20 deletions(-)
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diff --git a/src/elfcompress.c b/src/elfcompress.c
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index 18ade66f..f771b92a 100644
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--- a/src/elfcompress.c
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+++ b/src/elfcompress.c
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@@ -529,30 +529,33 @@ process_file (const char *fname)
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}
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}
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- if (shdr->sh_type != SHT_NOBITS
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- && (shdr->sh_flags & SHF_ALLOC) == 0)
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+ if (force || type != schtype)
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{
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- set_section (sections, ndx);
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- /* Check if we might want to change this section name. */
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- if (! adjust_names
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- && ((type != ZLIB_GNU
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- && startswith (sname, ".zdebug"))
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- || (type == ZLIB_GNU
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- && startswith (sname, ".debug"))))
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- adjust_names = true;
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-
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- /* We need a buffer this large if we change the names. */
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- if (adjust_names)
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+ if (shdr->sh_type != SHT_NOBITS
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+ && (shdr->sh_flags & SHF_ALLOC) == 0)
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{
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- size_t slen = strlen (sname);
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- if (slen > maxnamelen)
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- maxnamelen = slen;
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+ set_section (sections, ndx);
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+ /* Check if we might want to change this section name. */
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+ if (! adjust_names
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+ && ((type != ZLIB_GNU
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+ && startswith (sname, ".zdebug"))
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+ || (type == ZLIB_GNU
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+ && startswith (sname, ".debug"))))
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+ adjust_names = true;
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+
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+ /* We need a buffer this large if we change the names. */
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+ if (adjust_names)
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+ {
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+ size_t slen = strlen (sname);
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+ if (slen > maxnamelen)
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+ maxnamelen = slen;
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+ }
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}
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+ else
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+ if (verbose >= 0)
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+ printf ("[%zd] %s ignoring %s section\n", ndx, sname,
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+ (shdr->sh_type == SHT_NOBITS ? "no bits" : "allocated"));
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}
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- else
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- if (verbose >= 0)
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- printf ("[%zd] %s ignoring %s section\n", ndx, sname,
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- (shdr->sh_type == SHT_NOBITS ? "no bits" : "allocated"));
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}
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if (shdr->sh_type == SHT_SYMTAB)
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--
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2.27.0
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