[PATCH 2/3] tests: add rename.test

[Dmitry V. Levin]

On Fri, Feb 26, 2016 at 05:41:38PM +0800, Fei Jie wrote:
> * tests/rename.c: New file.
> * tests/rename.test: New test.
> * tests/.gitignore: Add rename.
> * tests/Makefile.am (check_PROGRAMS): Likewise.
> (TESTS): Add rename.test.
> ---
>  tests/.gitignore  |  1 +
>  tests/Makefile.am |  2 ++
>  tests/rename.c    | 27 +++++++++++++++++++++++++++
>  tests/rename.test | 11 +++++++++++
>  4 files changed, 41 insertions(+)
>  create mode 100644 tests/rename.c
>  create mode 100755 tests/rename.test
> 
> diff --git a/tests/.gitignore b/tests/.gitignore
> index e79d317..a5d586d 100644
> --- a/tests/.gitignore
> +++ b/tests/.gitignore
> @@ -81,6 +81,7 @@ readlink
>  readlinkat
>  readv
>  recvmsg
> +rename
>  restart_syscall
>  rt_sigpending
>  rt_sigprocmask
> diff --git a/tests/Makefile.am b/tests/Makefile.am
> index d924b9a..4603c92 100644
> --- a/tests/Makefile.am
> +++ b/tests/Makefile.am
> @@ -129,6 +129,7 @@ check_PROGRAMS = \
>  	readlinkat \
>  	readv \
>  	recvmsg \
> +	rename \
>  	restart_syscall \
>  	rt_sigpending \
>  	rt_sigprocmask \
> @@ -287,6 +288,7 @@ TESTS = \
>  	readlinkat.test \
>  	readv.test \
>  	recvmsg.test \
> +	rename.test \
>  	rt_sigpending.test \
>  	rt_sigprocmask.test \
>  	rt_sigqueueinfo.test \
> diff --git a/tests/rename.c b/tests/rename.c
> new file mode 100644
> index 0000000..126d985
> --- /dev/null
> +++ b/tests/rename.c
> @@ -0,0 +1,27 @@
> +#include "tests.h"
> +#include <sys/syscall.h>
> +
> +#ifdef __NR_rename
> +
> +# include <stdio.h>
> +# include <unistd.h>
> +
> +# define OLD_FILE "rename_old"
> +# define NEW_FILE "rename_new"
> +
> +int
> +main(void)
> +{
> +	int rc = syscall(__NR_rename, OLD_FILE, NEW_FILE);
> +	printf("rename(\"%s\", \"%s\") = %d ENOENT (%m)\n",
> +	       OLD_FILE, NEW_FILE, rc);

There is a chance that __NR_rename is defined but the syscall
is not implemented.  Let's print it like in tests/execveat.c:
errno == ENOSYS ? "ENOSYS" : "ENOENT"


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