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Set bpf.progs_loaded property when programs finish loading

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The property bpf.progs_loaded will be used by services expecting BPF
programs to be loaded and wait before they are loaded.

Bug: 112334572

Change-Id: I19daa0caa84e2659e8790f0dd551d95ab824e13b
Signed-off-by: Joel Fernandes <joelaf@google.com>
This commit is contained in:
Joel Fernandes 2019-01-11 06:22:05 -05:00
parent 6e1341ef20
commit d3ec871017
1 changed files with 14 additions and 0 deletions
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14
bpfloader/BpfLoader.cpp
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@ -38,6 +38,7 @@
#include <sys/stat.h> #include <sys/stat.h>
#include <sys/types.h> #include <sys/types.h>
#include <android-base/properties.h>
#include <android-base/stringprintf.h> #include <android-base/stringprintf.h>
#include <android-base/strings.h> #include <android-base/strings.h>
#include <android-base/unique_fd.h> #include <android-base/unique_fd.h>
@ -86,6 +87,19 @@ void loadAllElfObjects(void) {
} }
int main() { int main() {
std::string value = android::base::GetProperty("bpf.progs_loaded", "");
if (value == "1") {
ALOGI("Property bpf.progs_loaded is set, progs already loaded.\n");
return 0;
}
// Load all ELF objects, create programs and maps, and pin them // Load all ELF objects, create programs and maps, and pin them
loadAllElfObjects(); loadAllElfObjects();
if (android::base::SetProperty("bpf.progs_loaded", "1") == false) {
ALOGE("Failed to set bpf.progs_loaded property\n");
return 1;
}
return 0;
} }