MarcoBuster/Magisk
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Bypass stdio

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This commit is contained in:
topjohnwu 2021-03-13 16:17:28 -08:00
parent 1ff45ac5f5
commit a6f81c66e5
1 changed files with 6 additions and 9 deletions
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15
native/jni/core/daemon.cpp
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@ -310,7 +310,7 @@ static void logfile_writer(int sockfd) {
char *log_buf;
size_t buf_len;
sFILE log_fp = make_stream_fp<byte_stream>(log_buf, buf_len);
stream *log_strm = new byte_stream(log_buf, buf_len);
msghdr msg{};
iovec iov{};
@ -342,12 +342,9 @@ static void logfile_writer(int sockfd) {
return;
if (log_buf)
write(fd, log_buf, buf_len);
if (FILE *fp = fdopen(fd, "a")) {
setbuf(fp, nullptr);
log_fp = make_file(fp);
} else {
return;
}
delete log_strm;
log_strm = new fd_stream(fd);
continue;
}
@ -382,12 +379,12 @@ static void logfile_writer(int sockfd) {
iov.iov_len = meta.len;
if (recvmsg(sockfd, &msg, 0) <= 0)
return;
fwrite(buf, off + meta.len, 1, log_fp.get());
log_strm->write(buf, off + meta.len);
}
}
static int magisk_log(int prio, const char *fmt, va_list ap) {
char buf[4096];
char buf[4000];
int len = vsnprintf(buf, sizeof(buf), fmt, ap) + 1;
if (log_sockfd >= 0) {