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Add a regression test which transfers varying number of rights.

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This exercises the PKG_MAX_SIZE limit mentioned in r350054.

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Mark Johnston 2019-07-16 16:33:44 +00:00
parent 07cf2bb693
commit dd8bacfd4e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=350055
1 changed files with 98 additions and 1 deletions
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99
lib/libnv/tests/nvlist_send_recv_test.c
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@ -30,8 +30,9 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/wait.h>
#include <sys/nv.h>
@ -39,6 +40,7 @@ __FBSDID("$FreeBSD$");
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <paths.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
@ -375,11 +377,106 @@ ATF_TC_BODY(nvlist_send_recv__send_closed_fd, tc)
ATF_REQUIRE_ERRNO(EBADF, nvlist_send(socks[1], nvl) != 0);
}
static int
nopenfds(void)
{
size_t len;
int error, mib[4], n;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_NFDS;
mib[3] = 0;
len = sizeof(n);
error = sysctl(mib, nitems(mib), &n, &len, NULL, 0);
if (error != 0)
return (-1);
return (n);
}
#define NFDS 512
static void
send_many_fds_child(int sock)
{
char name[16];
nvlist_t *nvl;
int anfds, bnfds, fd, i, j;
fd = open(_PATH_DEVNULL, O_RDONLY);
ATF_REQUIRE(fd >= 0);
for (i = 1; i < NFDS; i++) {
nvl = nvlist_create(0);
bnfds = nopenfds();
if (bnfds == -1)
err(EXIT_FAILURE, "sysctl");
for (j = 0; j < i; j++) {
snprintf(name, sizeof(name), "fd%d", j);
nvlist_add_descriptor(nvl, name, fd);
}
nvlist_send(sock, nvl);
nvlist_destroy(nvl);
anfds = nopenfds();
if (anfds == -1)
err(EXIT_FAILURE, "sysctl");
if (anfds != bnfds)
errx(EXIT_FAILURE, "fd count mismatch");
}
}
ATF_TC_WITHOUT_HEAD(nvlist_send_recv__send_many_fds);
ATF_TC_BODY(nvlist_send_recv__send_many_fds, tc)
{
char name[16];
nvlist_t *nvl;
int anfds, bnfds, fd, i, j, socks[2], status;
pid_t pid;
ATF_REQUIRE(socketpair(PF_UNIX, SOCK_STREAM, 0, socks) == 0);
pid = fork();
ATF_REQUIRE(pid >= 0);
if (pid == 0) {
/* Child. */
(void)close(socks[0]);
send_many_fds_child(socks[1]);
_exit(0);
}
(void)close(socks[1]);
for (i = 1; i < NFDS; i++) {
bnfds = nopenfds();
ATF_REQUIRE(bnfds != -1);
nvl = nvlist_recv(socks[0], 0);
ATF_REQUIRE(nvl != NULL);
for (j = 0; j < i; j++) {
snprintf(name, sizeof(name), "fd%d", j);
fd = nvlist_take_descriptor(nvl, name);
ATF_REQUIRE(close(fd) == 0);
}
nvlist_destroy(nvl);
anfds = nopenfds();
ATF_REQUIRE(anfds != -1);
ATF_REQUIRE(anfds == bnfds);
}
ATF_REQUIRE(waitpid(pid, &status, 0) == pid);
ATF_REQUIRE(status == 0);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, nvlist_send_recv__send_nvlist);
ATF_TP_ADD_TC(tp, nvlist_send_recv__send_closed_fd);
ATF_TP_ADD_TC(tp, nvlist_send_recv__send_many_fds);
return (atf_no_error());
}