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zdtm/netns_sub_sysctl: add ipv4/ping_group_range sysctl check

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Signed-off-by: Pavel Tikhomirov <ptikhomirov@virtuozzo.com>
This commit is contained in:
Pavel Tikhomirov 2025-01-16 11:56:00 +08:00 committed by Pavel Tikhomirov
parent f38e58836a
commit 1c9fd58ff0
3 changed files with 91 additions and 12 deletions
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43
test/zdtm/lib/sysctl.c
View File

@ -3,6 +3,49 @@
#include "zdtmtst.h"
#include "sysctl.h"
int sysctl_read_str(const char *name, char *data, size_t size)
{
int fd, ret;
fd = open(name, O_RDONLY);
if (fd < 0) {
pr_perror("Can't open %s", name);
return -1;
}
ret = read(fd, data, size - 1);
if (ret < 0) {
pr_perror("Can't read %s", name);
close(fd);
return -1;
}
data[ret] = '\0';
close(fd);
return 0;
}
int sysctl_write_str(const char *name, char *data)
{
int fd, ret;
fd = open(name, O_WRONLY);
if (fd < 0) {
pr_perror("Can't open %s", name);
return -1;
}
ret = write(fd, data, strlen(data));
if (ret < 0) {
pr_perror("Can't write %s into %s", data, name);
close(fd);
return -1;
}
close(fd);
return 0;
}
int sysctl_read_int(const char *name, int *data)
{
int fd;

2
test/zdtm/lib/sysctl.h
View File

@ -3,5 +3,7 @@
extern int sysctl_read_int(const char *name, int *data);
extern int sysctl_write_int(const char *name, int val);
extern int sysctl_read_str(const char *name, char *data, size_t size);
extern int sysctl_write_str(const char *name, char *data);
#endif

58
test/zdtm/static/netns_sub_sysctl.c
View File

@ -3,18 +3,33 @@
#include "zdtmtst.h"
#include "sysctl.h"
const char *test_doc = "Check dump and restore a net.unix.max_dgram_qlen sysctl parameter in subns";
const char *test_doc = "Check dump and restore of sysctls in subns";
const char *test_author = "Alexander Mikhalitsyn <alexander@mihalicyn.com>";
#define MAX_STR_SYSCTL_LEN 200
enum {
SYSCTL_INT,
SYSCTL_STR,
};
typedef struct {
const char *path;
int type;
int old;
int new;
char s_old[MAX_STR_SYSCTL_LEN];
char s_new[MAX_STR_SYSCTL_LEN];
} sysctl_opt_t;
#define CONF_UNIX_BASE "/proc/sys/net/unix"
#define IPV4_SYSCTL_BASE "/proc/sys/net/ipv4"
static sysctl_opt_t net_unix_params[] = { { CONF_UNIX_BASE "/max_dgram_qlen", 0, 0 }, { NULL, 0, 0 } };
static sysctl_opt_t net_unix_params[] = {
{CONF_UNIX_BASE "/max_dgram_qlen", SYSCTL_INT},
{IPV4_SYSCTL_BASE "/ping_group_range", SYSCTL_STR, 0, 0, "40000\t50000\n"},
{NULL, 0, 0}
};
int main(int argc, char **argv)
{
@ -23,10 +38,17 @@ int main(int argc, char **argv)
test_init(argc, argv);
for (p = net_unix_params; p->path != NULL; p++) {
p->old = (((unsigned)lrand48()) % 1023) + 1;
if (sysctl_write_int(p->path, p->old)) {
pr_perror("Can't change %s", p->path);
return -1;
if (p->type == SYSCTL_INT) {
p->old = (((unsigned)lrand48()) % 1023) + 1;
if (sysctl_write_int(p->path, p->old)) {
pr_perror("Can't change %s", p->path);
return -1;
}
} else if (p->type == SYSCTL_STR) {
if (sysctl_write_str(p->path, p->s_old)) {
pr_perror("Can't change %s", p->path);
return -1;
}
}
}
@ -34,13 +56,25 @@ int main(int argc, char **argv)
test_waitsig();
for (p = net_unix_params; p->path != NULL; p++) {
if (sysctl_read_int(p->path, &p->new))
ret = 1;
if (p->type == SYSCTL_INT) {
if (sysctl_read_int(p->path, &p->new))
ret = 1;
if (p->old != p->new) {
errno = EINVAL;
pr_perror("%s changed: %d ---> %d", p->path, p->old, p->new);
ret = 1;
if (p->old != p->new) {
errno = EINVAL;
pr_perror("%s changed: %d ---> %d", p->path, p->old, p->new);
ret = 1;
}
} else if (p->type == SYSCTL_STR) {
if (sysctl_read_str(p->path, p->s_new, MAX_STR_SYSCTL_LEN)) {
ret = 1;
} else {
if (strcmp(p->s_old, p->s_new)) {
errno = EINVAL;
pr_perror("%s changed: %s ---> %s", p->path, p->s_old, p->s_new);
ret = 1;
}
}
}
}