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perf map: Use strstarts() to look for Android libraries 

And add the '/' to avoid looking at things like "/system/libsomething",
when all we want to know if it is like "/system/lib/something", i.e. if
it is in that system library dir.

Using strstarts() avoids off-by-one errors like recently fixed in this
file.

Since this adds the '/' I separated this patch, another patch will make
this consistent by removing other strncmp(str, prefix, manually
calculated prefix length) usage.

Reported-by: Dominik Czarnota <dominik.b.czarnota@gmail.com>
Acked-by: Dominik Czarnota <dominik.b.czarnota@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: Link: http://lore.kernel.org/lkml/CABEVAa0_q-uC0vrrqpkqRHy_9RLOSXOJxizMLm1n5faHRy2AeA@mail.gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2020-03-09 16:53:41 -03:00
parent b8fdcfb5a1
commit bdadd647cb
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
tools/perf/util/map.c
View File

@ -44,8 +44,8 @@ static inline int is_no_dso_memory(const char *filename)
static inline int is_android_lib(const char *filename)
{
return !strncmp(filename, "/data/app-lib", 13) ||
!strncmp(filename, "/system/lib", 11);
return strstarts(filename, "/data/app-lib/") ||
strstarts(filename, "/system/lib/");
}
static inline bool replace_android_lib(const char *filename, char *newfilename)
@ -65,7 +65,7 @@ static inline bool replace_android_lib(const char *filename, char *newfilename)
app_abi_length = strlen(app_abi);
if (!strncmp(filename, "/data/app-lib", 13)) {
if (strstarts(filename, "/data/app-lib/")) {
char *apk_path;
if (!app_abi_length)
@ -89,7 +89,7 @@ static inline bool replace_android_lib(const char *filename, char *newfilename)
return true;
}
if (!strncmp(filename, "/system/lib/", 12)) {
if (strstarts(filename, "/system/lib/")) {
char *ndk, *app;
const char *arch;
size_t ndk_length;