!1222 删除无用函数GetRandom

Merge pull request !1222 from cheng_jinsong/master_cc_delete_unused_function

services/include/init_utils.h

@@ -77,7 +77,6 @@ void FreeStringVector(char **vector, int count);
 int InUpdaterMode(void);
 int StringReplaceChr(char *strl, char oldChr, char newChr);
 
-uint32_t GetRandom(void);
 void OpenConsole(void);
 void TrimTail(char *str, char c);
 char *TrimHead(char *str, char c);

services/utils/init_utils.c

@@ -534,17 +534,6 @@ int StringReplaceChr(char *strl, char oldChr, char newChr)
     return 0;
 }
 
-uint32_t GetRandom()
-{
-    uint32_t ulSeed = 0;
-    int fd = open("/dev/urandom", O_RDONLY);
-    if (fd > 0) {
-        read(fd, &ulSeed, sizeof(ulSeed));
-    }
-    close(fd);
-    return ulSeed;
-}
-
 void RedirectStdio(int fd)
 {
 #ifndef __LITEOS_M__

test/unittest/init/utils_unittest.cpp

@@ -70,7 +70,6 @@ HWTEST_F(UtilsUnitTest, TestUtilsApi, TestSize.Level0)
     float sec = ConvertMicrosecondToSecond(1000000); // 1000000 microseconds
     EXPECT_EQ(sec, 1);
     EXPECT_EQ(WriteAll(2, "test", strlen("test")), 4);
-    GetRandom();
     mode_t mode = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH;
     CheckAndCreatFile("/data/init_ut/testcreatfile", mode);
     CheckAndCreatFile("/data/init_ut/nodir/testcreatfile", mode);