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Fix null test and write test issues about the stat parameter

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This issue may cause SegFault if pass null to state,
and miss the validation by test_user_memory(...) if not null.
This commit is contained in:
Gary
2018-10-18 14:41:47 -07:00
committed by Don Porter
parent aed520f977
commit 5d799d27f9
1 changed files with 2 additions and 2 deletions
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LibOS/shim/src/sys/shim_stat.c
+2 -2
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@@ -39,7 +39,7 @@ int shim_do_stat (const char * file, struct stat * stat)
if (!file || test_user_string(file))
return -EFAULT;
if (!stat && test_user_memory(stat, sizeof(*stat), true))
if (!stat || test_user_memory(stat, sizeof(*stat), true))
return -EFAULT;
int ret;
@@ -67,7 +67,7 @@ int shim_do_lstat (const char * file, struct stat * stat)
if (!file || test_user_string(file))
return -EFAULT;
if (!stat && test_user_memory(stat, sizeof(*stat), true))
if (!stat || test_user_memory(stat, sizeof(*stat), true))
return -EFAULT;
int ret;