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Better error handling and logging

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This commit is contained in:
topjohnwu 2020-12-05 10:23:49 -08:00
parent ff0a76606e
commit 2a694596b5
3 changed files with 17 additions and 3 deletions
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1
native/jni/init/mount.cpp
View File

@ -346,6 +346,7 @@ void SARInit::early_mount() {
auto init = raw_data::mmap_ro("/init");
is_two_stage = init.contains("selinux_setup");
}
LOGD("is_two_stage: [%d]\n", is_two_stage);
if (!is_two_stage) {
// Make dev writable

8
native/jni/init/raw_data.cpp
View File

@ -3,6 +3,8 @@
using namespace std;
int data_holder::patch(str_pairs list) {
if (buf == nullptr)
return 0;
int count = 0;
for (uint8_t *p = buf, *eof = buf + sz; p < eof; ++p) {
for (auto [from, to] : list) {
@ -19,9 +21,13 @@ int data_holder::patch(str_pairs list) {
}
bool data_holder::contains(string_view pattern) {
if (buf == nullptr)
return false;
for (uint8_t *p = buf, *eof = buf + sz; p < eof; ++p) {
if (memcmp(p, pattern.data(), pattern.length() + 1) == 0)
if (memcmp(p, pattern.data(), pattern.length() + 1) == 0) {
LOGD("Found pattern [%s]\n", pattern.data());
return true;
}
}
return false;
}

11
native/jni/utils/files.cpp
View File

@ -273,10 +273,17 @@ void fclone_attr(int src, int dest) {
}
void *__mmap(const char *filename, size_t *size, bool rw) {
int fd = xopen(filename, (rw ? O_RDWR : O_RDONLY) | O_CLOEXEC);
if (fd < 0) {
*size = 0;
return nullptr;
}
struct stat st;
void *buf;
int fd = xopen(filename, (rw ? O_RDWR : O_RDONLY) | O_CLOEXEC);
fstat(fd, &st);
if (fstat(fd, &st)) {
*size = 0;
return nullptr;
}
if (S_ISBLK(st.st_mode))
ioctl(fd, BLKGETSIZE64, size);
else