On Tue, 2009-07-07 at 14:49 +0530, naresh kamboju wrote:
> Hi,
>
> I have noticed FAIL and fixed mmap/18-1.c under open posix testsuite.
> I have fixed this test case by changing the seteuid() from root to
> non-root. To get resource limit setrlimit()
>
> STEPS:
> mmap:
> EAGAIN:
> Lock all the memory by mlockall().
> Set resource limit setrlimit()
> Change the user to non-root then only setrmilit is applicable.
>
> I have attached the patch and below.
> Please review the same.
>
> Best regards,
> Naresh Kamboju
>
> /*****************************************************************/
> [mmap]# ./18-1.test
> Test Pass: mmap/18-1.c Get EAGAIN: Resource temporarily unavailable
> /*****************************************************************/
>
>
> Signed-off-by: Naresh Kamboju < [email protected] >
Thanks.
Regards--
Subrata
> diff -Naurb
> a/testcases/open_posix_testsuite/conformance/interfaces/mmap/18-1.c
> b/testcases/open_posix_testsuite/conformance/interfaces/mmap/18-1.c
> --- a/testcases/open_posix_testsuite/conformance/interfaces/mmap/18-1.c
> 2005-06-03
> 22:00:33.000000000 +0530
> +++ b/testcases/open_posix_testsuite/conformance/interfaces/mmap/18-1.c
> 2009-07-07
> 14:03:47.000000000 +0530
> @@ -13,9 +13,11 @@
> * 1. Call mlockall(), setting MCL_FUTURE;
> * 2. Call setrlimit(), set rlim_cur of resource RLIMIT_MEMLOCK to a
> * certain value.
> - * 3. Map a shared memory object, with size larger than the
> + * 3. Change user to non-root user seteuid()
> + * 4. Map a shared memory object, with size larger than the
> * rlim_cur value set in step 2
> - * 4. Should get EAGAIN.
> + * 5. Should get EAGAIN.
> + * 6. Change user to root seteuid()
> */
>
> #define _XOPEN_SOURCE 600
> @@ -28,12 +30,43 @@
> #include <sys/stat.h>
> #include <sys/resource.h>
> #include <fcntl.h>
> +#include <pwd.h>
> #include <string.h>
> #include <errno.h>
> #include "posixtest.h"
>
> #define TNAME "mmap/18-1.c"
>
> +
> +/** Set the euid of this process to a non-root uid */
> +int set_nonroot()
> +{
> + struct passwd *pw;
> + setpwent();
> + /* search for the first user which is non root */
> + while((pw = getpwent()) != NULL)
> + if(strcmp(pw->pw_name, "root"))
> + break;
> + endpwent();
> + if(pw == NULL) {
> + printf("There is no other user than current and root.\n");
> + return 1;
> + }
> +
> + if(seteuid(pw->pw_uid) != 0) {
> + if(errno == EPERM) {
> + printf("You don't have permission to change your
> UID.\n");
> + return 1;
> + }
> + perror("An error occurs when calling seteuid()");
> + return 1;
> + }
> +
> + printf("Testing with user '%s' (uid: %d)\n",
> + pw->pw_name, (int)geteuid());
> + return 0;
> +}
> +
> int main()
> {
> char tmpfname[256];
> @@ -93,11 +126,29 @@
> }
>
> fd = shm_fd;
> +
> + /* This test should be run under standard user permissions */
> + if (getuid() == 0) {
> + if (set_nonroot() != 0) {
> + printf("Cannot run this test as non-root user\n");
> + return PTS_UNTESTED;
> + }
> + }
> +
> + /*
> + * EAGAIN:
> + * Lock all the memory by mlockall().
> + * Set resource limit setrlimit()
> + * Change the user to non-root then only setrmilit is applicable.
> + */
> +
> pa = mmap (addr, len, prot, flag, fd, off);
> if (pa == MAP_FAILED && errno == EAGAIN)
> {
> printf ("Test Pass: " TNAME " Get EAGAIN: %s\n",
> strerror(errno));
> + /* Change user to root */
> + seteuid(0);
> close(fd);
> munmap(pa, len);
> exit(PTS_PASS);
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