diff options
| author | Paul Gortmaker <paul.gortmaker@windriver.com> | 2015-04-20 10:20:26 +0930 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-11-11 13:33:42 +0000 |
| commit | a74cbb37bb2fe6a700eba93000347b12659bc844 (patch) | |
| tree | abdd3fe5ea1acdbb20d576ec8a1403ec04fbfc87 /scripts | |
| parent | 987b13a4f0a5f92909ec2eeba885e5abe67abef8 (diff) | |
modpost: expand pattern matching to support substring matches
commit 09c20c032b0f753969ae778d9783d946f054d7fe upstream.
Currently the match() function supports a leading * to match any
prefix and a trailing * to match any suffix. However there currently
is not a combination of both that can be used to target matches of
whole families of functions that share a common substring.
Here we expand the *foo and foo* match to also support *foo* with
the goal of targeting compiler generated symbol names that contain
strings like ".constprop." and ".isra."
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/mod/modpost.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c index 9d9c5b905b35..14e3f53ebf17 100644 --- a/scripts/mod/modpost.c +++ b/scripts/mod/modpost.c @@ -798,6 +798,7 @@ static int number_prefix(const char *sym) * where the '1' can be any number including several digits. * The $ syntax is for sections where ld append a dot number * to make section name unique. + * "*foo*" will match a string that contains "foo" */ static int match(const char *sym, const char * const pat[]) { @@ -806,8 +807,17 @@ static int match(const char *sym, const char * const pat[]) p = *pat++; const char *endp = p + strlen(p) - 1; + /* "*foo*" */ + if (*p == '*' && *endp == '*') { + char *here, *bare = strndup(p + 1, strlen(p) - 2); + + here = strstr(sym, bare); + free(bare); + if (here != NULL) + return 1; + } /* "*foo" */ - if (*p == '*') { + else if (*p == '*') { if (strrcmp(sym, p + 1) == 0) return 1; } |