125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/*
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* Copyright (c) Dan Kegel 2003
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* Test Name: setegid01
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*
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* Test Description:
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* Verify that setegid does not modify the saved gid or real gid.
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*/
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#define _GNU_SOURCE 1
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#include <pwd.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include "test.h"
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#include "safe_macros.h"
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char *TCID = "setegid01";
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int TST_TOTAL = 1;
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static void setup(void);
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static void setegid_verify(void);
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static void cleanup(void);
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static gid_t nobody_gid;
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int main(int argc, char **argv)
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{
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int lc;
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tst_parse_opts(argc, argv, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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setegid_verify();
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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struct passwd *nobody;
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tst_require_root();
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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nobody = SAFE_GETPWNAM(cleanup, "nobody");
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nobody_gid = nobody->pw_gid;
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}
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static void setegid_verify(void)
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{
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gid_t cur_rgid, cur_egid, cur_sgid;
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gid_t orig_rgid, orig_egid, orig_sgid;
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SAFE_GETRESGID(cleanup, &orig_rgid, &orig_egid, &orig_sgid);
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tst_resm(TINFO, "getresgid reports rgid %d, egid %d, sgid %d",
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orig_rgid, orig_egid, orig_sgid);
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tst_resm(TINFO, "calling setegid(nobody_gid %d)", nobody_gid);
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SAFE_SETEGID(cleanup, nobody_gid);
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SAFE_GETRESGID(cleanup, &cur_rgid, &cur_egid, &cur_sgid);
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tst_resm(TINFO, "getresgid reports rgid %d, egid %d, sgid %d", cur_rgid,
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cur_egid, cur_sgid);
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/* make sure it at least does what its name says */
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if (nobody_gid != cur_egid) {
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tst_resm(TFAIL, "setegid() failed to change the effective gid");
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return;
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}
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/* SUSv3 says the real group ID and saved set-gid must
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* remain unchanged by setgid. See
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* http://www.opengroup.org/onlinepubs/007904975/functions/setegid.html
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*/
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if (orig_sgid != cur_sgid) {
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tst_resm(TFAIL, "setegid() changed the saved set-gid");
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return;
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}
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if (orig_rgid != cur_rgid) {
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tst_resm(TFAIL, "setegid() changed the real gid");
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return;
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}
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SAFE_SETEGID(cleanup, orig_egid);
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SAFE_GETRESGID(cleanup, &cur_rgid, &cur_egid, &orig_sgid);
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if (orig_egid != cur_egid) {
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tst_resm(TFAIL, "setegid() failed to reset effective gid back");
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return;
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}
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tst_resm(TPASS, "setegid() passed functional test");
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}
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static void cleanup(void)
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{
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}
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