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Print out shared app gids correctly

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For applications that share resources across users such as
forward-locked applications, print out their group name correctly.

Change-Id: I06ee0b67e4325cfa415ffd7a03e301700399a66d
This commit is contained in:
Kenny Root 2012-09-13 14:31:50 -07:00
parent 2a54e5ecd0
commit 8a05a01de7
2 changed files with 18 additions and 9 deletions
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19
libc/bionic/stubs.cpp
View file

@ -266,18 +266,19 @@ static unsigned app_id_from_name(const char* name) {
static void print_app_name_from_appid_userid(const uid_t appid,
const uid_t userid, char* buffer, const int bufferlen) {
if (appid < AID_ISOLATED_START) {
if (appid < AID_APP) {
for (size_t n = 0; n < android_id_count; n++) {
if (android_ids[n].aid == appid) {
snprintf(buffer, bufferlen, "u%u_%s", userid, android_ids[n].name);
return;
}
if (appid >= AID_ISOLATED_START) {
snprintf(buffer, bufferlen, "u%u_i%u", userid, appid - AID_ISOLATED_START);
} else if (userid == 0 && appid >= AID_SHARED_GID_START) {
snprintf(buffer, bufferlen, "all_a%u", appid - AID_SHARED_GID_START);
} else if (appid < AID_APP) {
for (size_t n = 0; n < android_id_count; n++) {
if (android_ids[n].aid == appid) {
snprintf(buffer, bufferlen, "u%u_%s", userid, android_ids[n].name);
return;
}
}
snprintf(buffer, bufferlen, "u%u_a%u", userid, appid - AID_APP);
} else {
snprintf(buffer, bufferlen, "u%u_i%u", userid, appid - AID_ISOLATED_START);
snprintf(buffer, bufferlen, "u%u_a%u", userid, appid - AID_APP);
}
}

8
tests/stubs_test.cpp
View file

@ -68,6 +68,14 @@ TEST(getpwnam, app_id_nobody) {
CHECK_GETPWNAM_FOR("nobody", 9999, TYPE_SYSTEM);
}
TEST(getpwnam, app_id_all_a0) {
CHECK_GETPWNAM_FOR("all_a0", 50000, TYPE_APP);
}
TEST(getpwnam, app_id_u1_a40000) {
CHECK_GETPWNAM_FOR("u1_a40000", 150000, TYPE_APP);
}
TEST(getpwnam, app_id_u0_a0) {
CHECK_GETPWNAM_FOR("u0_a0", 10000, TYPE_APP);
}