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authorFrank Rowand <frank.rowand@am.sony.com>2012-04-09 17:59:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-09 20:52:56 -0700
commit258f742635360175564e9470eb060ff4d4b984e7 (patch)
treec9e622338553c843b8a3b58af00e46be60388502 /scripts
parent83dbbdbb38666e20a75fad2294cf1df77c52f121 (diff)
downloadlinaro-lsk-258f742635360175564e9470eb060ff4d4b984e7.tar.gz
modpost: Fix modpost license checking of vmlinux.o
Commit f02e8a6596b7 ("module: Sort exported symbols") sorts symbols placing each of them in its own elf section. This sorting and merging into the canonical sections are done by the linker. Unfortunately modpost to generate Module.symvers file parses vmlinux.o (which is not linked yet) and all modules object files (which aren't linked yet). These aren't sanitized by the linker yet. That breaks modpost that can't detect license properly for modules. This patch makes modpost aware of the new exported symbols structure. [ This above is a slightly corrected version of the explanation of the problem, copied from commit 62a2635610db ("modpost: Fix modpost's license checking V3"). That commit fixed the problem for module object files, but not for vmlinux.o. This patch fixes modpost for vmlinux.o. ] Signed-off-by: Frank Rowand <frank.rowand@am.sony.com> Signed-off-by: Alessio Igor Bogani <abogani@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/mod/modpost.c7
-rw-r--r--scripts/mod/modpost.h1
2 files changed, 6 insertions, 2 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 3f01fd90873..c4e7d1510f9 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -132,8 +132,10 @@ static struct module *new_module(char *modname)
/* strip trailing .o */
s = strrchr(p, '.');
if (s != NULL)
- if (strcmp(s, ".o") == 0)
+ if (strcmp(s, ".o") == 0) {
*s = '\0';
+ mod->is_dot_o = 1;
+ }
/* add to list */
mod->name = p;
@@ -587,7 +589,8 @@ static void handle_modversions(struct module *mod, struct elf_info *info,
unsigned int crc;
enum export export;
- if (!is_vmlinux(mod->name) && strncmp(symname, "__ksymtab", 9) == 0)
+ if ((!is_vmlinux(mod->name) || mod->is_dot_o) &&
+ strncmp(symname, "__ksymtab", 9) == 0)
export = export_from_secname(info, get_secindex(info, sym));
else
export = export_from_sec(info, get_secindex(info, sym));
diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h
index 2031119080d..51207e4d5f8 100644
--- a/scripts/mod/modpost.h
+++ b/scripts/mod/modpost.h
@@ -113,6 +113,7 @@ struct module {
int has_cleanup;
struct buffer dev_table_buf;
char srcversion[25];
+ int is_dot_o;
};
struct elf_info {