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Fix xxread false negatives

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Fix #3710
This commit is contained in:
topjohnwu 2021-01-16 21:43:53 -08:00
parent f5c2d72429
commit 67e2a4720e
2 changed files with 15 additions and 8 deletions
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2
gradle.properties
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@ -27,6 +27,6 @@ android.injected.testOnly=false
kapt.incremental.apt=true
# Magisk
magisk.versionCode=21301
magisk.versionCode=21302
magisk.ndkVersion=21d
magisk.fullNdkVersion=21.3.6528147

19
native/jni/utils/xwrap.cpp
View File

@ -1,7 +1,5 @@
#include <sched.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include <sys/socket.h>
#include <sys/types.h>
@ -82,11 +80,20 @@ ssize_t xread(int fd, void *buf, size_t count) {
// Read exact same size as count
ssize_t xxread(int fd, void *buf, size_t count) {
int ret = read(fd, buf, count);
if (count != ret) {
PLOGE("read (%zu != %d)", count, ret);
}
size_t read_sz = 0;
int ret = -1;
while (read_sz != count && ret != 0) {
ret = read(fd, buf, count);
if (ret < 0) {
PLOGE("read");
return ret;
}
read_sz += ret;
}
if (read_sz != count) {
PLOGE("read (%zu != %zu)", count, read_sz);
}
return read_sz;
}
int xpipe2(int pipefd[2], int flags) {