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selftests/landlock: Fix net_test build with old libc

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One issue comes up while building selftest/landlock/net_test on my side
(gcc 7.3/glibc-2.28/kernel-4.19).

net_test.c: In function ‘set_service’:
net_test.c:91:45: warning: implicit declaration of function ‘gettid’; [-Wimplicit-function-declaration]
    "_selftests-landlock-net-tid%d-index%d", gettid(),
                                             ^~~~~~
                                             getgid
net_test.c:(.text+0x4e0): undefined reference to `gettid'

Signed-off-by: Hu Yadi <hu.yadi@h3c.com>
Suggested-by: Jiao <jiaoxupo@h3c.com>
Reviewed-by: Berlin <berlin@h3c.com>
Fixes: a549d055a2 ("selftests/landlock: Add network tests")
Link: https://lore.kernel.org/r/20240123062621.25082-1-hu.yadi@h3c.com
[mic: Cosmetic fixes]
Signed-off-by: Mickaël Salaün <mic@digikod.net>
This commit is contained in:
Hu Yadi 2024-01-23 14:26:21 +08:00 committed by Mickaël Salaün
parent 6613476e22
commit 116099ed34
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1 changed files with 7 additions and 1 deletions
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8
tools/testing/selftests/landlock/net_test.c
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@ -17,6 +17,7 @@
#include <string.h>
#include <sys/prctl.h>
#include <sys/socket.h>
#include <sys/syscall.h>
#include <sys/un.h>
#include "common.h"
@ -54,6 +55,11 @@ struct service_fixture {
};
};
static pid_t sys_gettid(void)
{
return syscall(__NR_gettid);
}
static int set_service(struct service_fixture *const srv,
const struct protocol_variant prot,
const unsigned short index)
@ -88,7 +94,7 @@ static int set_service(struct service_fixture *const srv,
case AF_UNIX:
srv->unix_addr.sun_family = prot.domain;
sprintf(srv->unix_addr.sun_path,
"_selftests-landlock-net-tid%d-index%d", gettid(),
"_selftests-landlock-net-tid%d-index%d", sys_gettid(),
index);
srv->unix_addr_len = SUN_LEN(&srv->unix_addr);
srv->unix_addr.sun_path[0] = '\0';