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https://github.com/checkpoint-restore/criu.git
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21c4675304
clang complains:
> clang -g -O2 -Wall -Werror -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0 -iquote ../lib/arch/x86/include -I../lib groups.c ../lib/libzdtmtst.a ../lib/libzdtmtst.a -o groups
> groups.c:22:9: error: comparison of unsigned expression < 0 is always false [-Werror,-Wtautological-compare]
> if (ng < 0) {
> ~~ ^ ~
Declare ng as int.
Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
65 lines
1.1 KiB
C
65 lines
1.1 KiB
C
#define _GNU_SOURCE
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#include <unistd.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <grp.h>
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#include <sys/wait.h>
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#include "zdtmtst.h"
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const char *test_doc = "Check that supplementary groups are supported";
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const char *test_author = "Pavel Emelianov <xemul@parallels.com>";
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int main(int argc, char **argv)
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{
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int ng;
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unsigned int *grp, *grp2, i, max;
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test_init(argc, argv);
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ng = getgroups(0, NULL);
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if (ng < 0) {
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pr_perror("Can't get groups");
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return -1;
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}
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grp = malloc((ng + 1) * sizeof(*grp));
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ng = getgroups(ng, grp);
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if (ng < 0) {
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pr_perror("Can't get groups2");
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return -1;
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}
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max = 0;
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for (i = 0; i < ng; i++)
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if (max < grp[i])
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max = grp[i];
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grp[ng++] = max + 1;
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if (setgroups(ng, grp) < 0) {
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pr_perror("Can't set groups");
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return -1;
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}
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test_daemon();
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test_waitsig();
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grp2 = malloc(ng * sizeof(*grp2));
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if (getgroups(ng, grp2) != ng) {
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fail("Nr groups changed");
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return -1;
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}
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if (memcmp(grp, grp2, ng * sizeof(*grp))) {
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fail("Groups have changed");
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return -1;
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}
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pass();
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return 0;
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}
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