[LTP] [PATCH] syscalls/setregid02: Fix retrieving a group of user "nobody"

[Yuriy Kolerov]

Hello!

Ping.

Regards,
Yuriy Kolerov


> -----Original Message-----
> From: Yuriy Kolerov [mailto:yuriy.kolerov@synopsys.com]
> Sent: Wednesday, September 23, 2015 3:20 PM
> To: ltp@lists.linux.it; Vineet Gupta; Alexey Brodkin; Anton Kolesov
> Cc: Francois Bedard; yuriy.kolerov@synopsys.com
> Subject: [LTP] [PATCH] syscalls/setregid02: Fix retrieving a group of user
> "nobody"
> 
> 
> In setup this test sets UID and GID of the user "nobody". Then it expects that
> user "nobody" is in group "nobody" and tries to retrive a structure for group
> "nobody" using getgrnam(). However some Linux distributions use group
> "nogroup" for user "nobody".
> Thus it's necessary to retrieve a group of user "nobody" not by hardcoded
> name but by its GID. It's necessary because group "nobody" may not exist.
> 
> I've replaced a variable "nobody" by more generic "ltpgroup".
> Then I've splitted a macro GET_GID on GET_GROUP_BY_NAME an
> GET_GROUP_BY_GID and used GET_GROUP_BY_GID for getting a group for
> the user "nobody".
> 
> On my test system I have user "nobody" in group "nogroup". So I've got this
> error messages for this test:
> 
>     ----------->8----------
>     setregid02.c:160: getgrnam("nobody") failed: errno=SUCCESS(0): Success
>     setregid02.c:160: Remaining cases broken
>     ----------->8----------
> 
> Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
> ---
>  testcases/kernel/syscalls/setregid/setregid02.c | 31 ++++++++++++++++----
> -----
>  1 file changed, 20 insertions(+), 11 deletions(-)

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