[LTP] [Patch] readlink03 test case fix

[Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>]

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In readlink03 testcase,
When 'Symlink Pathname is empty' the return value was 'ENOENT' but with 
newer kernels the return value is 'EINVAL'. The following patch will fix 
this.

readlink03:
Before patch:
...
readlink03    9  TFAIL  :  readlink() failed, Symlink Pathname is empty, 
errno=22, expected errno=2
...

After patch:
...
readlink03    9  TPASS  :  readlink(), Symlink Pathname is empty, 
returned errno 22
readlink03   10  TPASS  :  readlink(), Symlink Pathname is empty, 
returned errno 22
...

Signed-off-by: Nageswara R Sastry <rnsastry@linux.vnet.ibm.com>

-- 
Regards
R.Nageswara Sastry


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--- ltp.orig/testcases/kernel/syscalls/readlink/readlink03.c	2011-09-05 08:42:12.000000000 +0200
+++ ltp/testcases/kernel/syscalls/readlink/readlink03.c	2011-09-05 08:49:28.000000000 +0200
@@ -172,7 +172,11 @@ int main(int ac, char **av)
 			if (buf_size == 1) {
 				buf_size = sizeof(buffer);
 			}
-
+                        if (strncmp(test_desc, "Symlink Pathname is empty", 25) == 0) {
+                                if ( tst_kvercmp(2,6,39) >= 0 || tst_kvercmp(3,0,0) >= 0 ) {
+                                        Test_cases[i].exp_errno = EINVAL;
+                                }
+                        }
 			/*
 			 * Call readlink(2) to test different test conditions.
 			 * verify that it fails with -1 return value and sets
@@ -358,4 +362,4 @@ void cleanup()
 
 	tst_rmdir();
 
-}
\ No newline at end of file
+}

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