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zdtm: Check pidfd can send signal after C/R

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Ensure `pidfd_send_signal()` syscall works as expected after C/R.

Signed-off-by: Bhavik Sachdev <b.sachdev1904@gmail.com>
This commit is contained in:
Bhavik Sachdev 2024-07-09 20:01:00 +05:30 committed by Andrei Vagin
parent f9fdfcacdc
commit 487853ff21
2 changed files with 67 additions and 0 deletions
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1
test/zdtm/static/Makefile
View File

@ -54,6 +54,7 @@ TST_NOFILE := \
shm-mp \
ptrace_sig \
pidfd_self \
pidfd_child \
pipe00 \
pipe01 \
pipe02 \

66
test/zdtm/static/pidfd_child.c Normal file
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@ -0,0 +1,66 @@
#include <sys/syscall.h>
#include <unistd.h>
#include <sys/wait.h>
#include "zdtmtst.h"
const char *test_doc = "Checks pidfd sends signal to child process after restore\n";
const char *test_author = "Bhavik Sachdev <b.sachdev1904@gmail.com>";
static int pidfd_open(pid_t pid, unsigned int flags)
{
return syscall(__NR_pidfd_open, pid, flags);
}
static int pidfd_send_signal(int pidfd, int sig, siginfo_t* info, unsigned int flags)
{
return syscall(__NR_pidfd_send_signal, pidfd, sig, info, flags);
}
int main(int argc, char* argv[])
{
int pidfd, status;
pid_t child;
test_init(argc, argv);
child = fork();
if (child < 0) {
pr_perror("Unable to fork a new process");
return 1;
} else if (child == 0) {
test_waitsig();
return 0;
}
pidfd = pidfd_open(child, 0);
if (pidfd < 0) {
pr_perror("pidfd_open failed");
return 1;
}
test_daemon();
test_waitsig();
if (pidfd_send_signal(pidfd, SIGTERM, NULL, 0)) {
fail("Could not send signal");
goto err_close;
}
if (waitpid(child, &status, 0) != child) {
pr_perror("waitpid()");
goto err_close;
}
if (status != 0) {
fail("%d:%d:%d:%d", WIFEXITED(status), WEXITSTATUS(status), WIFSIGNALED(status), WTERMSIG(status));
goto err_close;
}
pass();
close(pidfd);
return 0;
err_close:
close(pidfd);
return 1;
}