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test-libudev: modernization

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This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2016-03-01 21:40:56 -05:00
parent 8b663bdf9b
commit cc4c1d2290
1 changed files with 102 additions and 158 deletions
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260
src/test/test-libudev.c
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@ -24,170 +24,140 @@
#include "libudev.h"
#include "fd-util.h"
#include "log.h"
#include "stdio-util.h"
#include "string-util.h"
#include "udev-util.h"
#include "util.h"
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
static void print_device(struct udev_device *device) {
const char *str;
dev_t devnum;
int count;
struct udev_list_entry *list_entry;
printf("*** device: %p ***\n", device);
log_info("*** device: %p ***", device);
str = udev_device_get_action(device);
if (str != NULL)
printf("action: '%s'\n", str);
log_info("action: '%s'", str);
str = udev_device_get_syspath(device);
printf("syspath: '%s'\n", str);
log_info("syspath: '%s'", str);
str = udev_device_get_sysname(device);
printf("sysname: '%s'\n", str);
log_info("sysname: '%s'", str);
str = udev_device_get_sysnum(device);
if (str != NULL)
printf("sysnum: '%s'\n", str);
log_info("sysnum: '%s'", str);
str = udev_device_get_devpath(device);
printf("devpath: '%s'\n", str);
log_info("devpath: '%s'", str);
str = udev_device_get_subsystem(device);
if (str != NULL)
printf("subsystem: '%s'\n", str);
log_info("subsystem: '%s'", str);
str = udev_device_get_devtype(device);
if (str != NULL)
printf("devtype: '%s'\n", str);
log_info("devtype: '%s'", str);
str = udev_device_get_driver(device);
if (str != NULL)
printf("driver: '%s'\n", str);
log_info("driver: '%s'", str);
str = udev_device_get_devnode(device);
if (str != NULL)
printf("devname: '%s'\n", str);
log_info("devname: '%s'", str);
devnum = udev_device_get_devnum(device);
if (major(devnum) > 0)
printf("devnum: %u:%u\n", major(devnum), minor(devnum));
log_info("devnum: %u:%u", major(devnum), minor(devnum));
count = 0;
udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
printf("link: '%s'\n", udev_list_entry_get_name(list_entry));
log_info("link: '%s'", udev_list_entry_get_name(list_entry));
count++;
}
if (count > 0)
printf("found %i links\n", count);
log_info("found %i links", count);
count = 0;
udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) {
printf("property: '%s=%s'\n",
log_info("property: '%s=%s'",
udev_list_entry_get_name(list_entry),
udev_list_entry_get_value(list_entry));
count++;
}
if (count > 0)
printf("found %i properties\n", count);
log_info("found %i properties", count);
str = udev_device_get_property_value(device, "MAJOR");
if (str != NULL)
printf("MAJOR: '%s'\n", str);
log_info("MAJOR: '%s'", str);
str = udev_device_get_sysattr_value(device, "dev");
if (str != NULL)
printf("attr{dev}: '%s'\n", str);
printf("\n");
log_info("attr{dev}: '%s'", str);
}
static int test_device(struct udev *udev, const char *syspath) {
static void test_device(struct udev *udev, const char *syspath) {
_cleanup_udev_device_unref_ struct udev_device *device;
printf("looking at device: %s\n", syspath);
log_info("looking at device: %s", syspath);
device = udev_device_new_from_syspath(udev, syspath);
if (device == NULL) {
printf("no device found\n");
return -1;
}
print_device(device);
return 0;
if (device == NULL)
log_warning_errno(errno, "udev_device_new_from_syspath: %m");
else
print_device(device);
}
static int test_device_parents(struct udev *udev, const char *syspath) {
static void test_device_parents(struct udev *udev, const char *syspath) {
_cleanup_udev_device_unref_ struct udev_device *device;
struct udev_device *device_parent;
printf("looking at device: %s\n", syspath);
log_info("looking at device: %s", syspath);
device = udev_device_new_from_syspath(udev, syspath);
if (device == NULL)
return -1;
return;
printf("looking at parents\n");
log_info("looking at parents");
device_parent = device;
do {
print_device(device_parent);
device_parent = udev_device_get_parent(device_parent);
} while (device_parent != NULL);
printf("looking at parents again\n");
log_info("looking at parents again");
device_parent = device;
do {
print_device(device_parent);
device_parent = udev_device_get_parent(device_parent);
} while (device_parent != NULL);
return 0;
}
static int test_device_devnum(struct udev *udev) {
static void test_device_devnum(struct udev *udev) {
dev_t devnum = makedev(1, 3);
struct udev_device *device;
_cleanup_udev_device_unref_ struct udev_device *device;
printf("looking up device: %u:%u\n", major(devnum), minor(devnum));
log_info("looking up device: %u:%u", major(devnum), minor(devnum));
device = udev_device_new_from_devnum(udev, 'c', devnum);
if (device == NULL)
return -1;
print_device(device);
udev_device_unref(device);
return 0;
log_warning_errno(errno, "udev_device_new_from_devnum: %m");
else
print_device(device);
}
static int test_device_subsys_name(struct udev *udev) {
struct udev_device *device;
static void test_device_subsys_name(struct udev *udev, const char *subsys, const char *dev) {
_cleanup_udev_device_unref_ struct udev_device *device;
printf("looking up device: 'block':'sda'\n");
device = udev_device_new_from_subsystem_sysname(udev, "block", "sda");
log_info("looking up device: '%s:%s'", subsys, dev);
device = udev_device_new_from_subsystem_sysname(udev, subsys, dev);
if (device == NULL)
return -1;
print_device(device);
udev_device_unref(device);
printf("looking up device: 'subsystem':'pci'\n");
device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");
if (device == NULL)
return -1;
print_device(device);
udev_device_unref(device);
printf("looking up device: 'drivers':'scsi:sd'\n");
device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd");
if (device == NULL)
return -1;
print_device(device);
udev_device_unref(device);
printf("looking up device: 'module':'printk'\n");
device = udev_device_new_from_subsystem_sysname(udev, "module", "printk");
if (device == NULL)
return -1;
print_device(device);
udev_device_unref(device);
return 0;
log_warning_errno(errno, "udev_device_new_from_subsystem_sysname: %m");
else
print_device(device);
}
static int test_enumerate_print_list(struct udev_enumerate *enumerate) {
@ -200,63 +170,45 @@ static int test_enumerate_print_list(struct udev_enumerate *enumerate) {
device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
udev_list_entry_get_name(list_entry));
if (device != NULL) {
printf("device: '%s' (%s)\n",
udev_device_get_syspath(device),
udev_device_get_subsystem(device));
log_info("device: '%s' (%s)",
udev_device_get_syspath(device),
udev_device_get_subsystem(device));
udev_device_unref(device);
count++;
}
}
printf("found %i devices\n\n", count);
log_info("found %i devices", count);
return count;
}
static int test_monitor(struct udev *udev) {
struct udev_monitor *udev_monitor = NULL;
int fd_ep;
int fd_udev = -1;
struct epoll_event ep_udev, ep_stdin;
static void test_monitor(struct udev *udev) {
_cleanup_udev_monitor_unref_ struct udev_monitor *udev_monitor;
_cleanup_close_ int fd_ep;
int fd_udev;
struct epoll_event ep_udev = {
.events = EPOLLIN,
}, ep_stdin = {
.events = EPOLLIN,
.data.fd = STDIN_FILENO,
};
fd_ep = epoll_create1(EPOLL_CLOEXEC);
if (fd_ep < 0) {
printf("error creating epoll fd: %m\n");
goto out;
}
assert_se(fd_ep >= 0);
udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
if (udev_monitor == NULL) {
printf("no socket\n");
goto out;
}
assert_se(udev_monitor != NULL);
fd_udev = udev_monitor_get_fd(udev_monitor);
if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 ||
udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 ||
udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) {
printf("filter failed\n");
goto out;
}
if (udev_monitor_enable_receiving(udev_monitor) < 0) {
printf("bind failed\n");
goto out;
}
memzero(&ep_udev, sizeof(struct epoll_event));
ep_udev.events = EPOLLIN;
ep_udev.data.fd = fd_udev;
if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) {
printf("fail to add fd to epoll: %m\n");
goto out;
}
memzero(&ep_stdin, sizeof(struct epoll_event));
ep_stdin.events = EPOLLIN;
ep_stdin.data.fd = STDIN_FILENO;
if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) < 0) {
printf("fail to add fd to epoll: %m\n");
goto out;
}
assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) >= 0);
assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) >= 0);
assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") >= 0);
assert_se(udev_monitor_enable_receiving(udev_monitor) >= 0);
assert_se(epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) >= 0);
assert_se(epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) >= 0);
for (;;) {
int fdcount;
@ -265,7 +217,7 @@ static int test_monitor(struct udev *udev) {
int i;
printf("waiting for events from udev, press ENTER to exit\n");
fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), -1);
fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), -1);
printf("epoll fd count: %i\n", fdcount);
for (i = 0; i < fdcount; i++) {
@ -279,36 +231,29 @@ static int test_monitor(struct udev *udev) {
udev_device_unref(device);
} else if (ev[i].data.fd == STDIN_FILENO && ev[i].events & EPOLLIN) {
printf("exiting loop\n");
goto out;
return;
}
}
}
out:
if (fd_ep >= 0)
close(fd_ep);
udev_monitor_unref(udev_monitor);
return 0;
}
static int test_queue(struct udev *udev) {
static void test_queue(struct udev *udev) {
struct udev_queue *udev_queue;
bool empty;
udev_queue = udev_queue_new(udev);
if (udev_queue == NULL)
return -1;
if (udev_queue_get_queue_is_empty(udev_queue))
printf("queue is empty\n");
assert_se(udev_queue);
empty = udev_queue_get_queue_is_empty(udev_queue);
log_info("queue is %s", empty ? "empty" : "not empty");
udev_queue_unref(udev_queue);
return 0;
}
static int test_enumerate(struct udev *udev, const char *subsystem) {
struct udev_enumerate *udev_enumerate;
int r;
printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem);
log_info("enumerate '%s'", subsystem == NULL ? "<all>" : subsystem);
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -317,7 +262,7 @@ static int test_enumerate(struct udev *udev, const char *subsystem) {
test_enumerate_print_list(udev_enumerate);
udev_enumerate_unref(udev_enumerate);
printf("enumerate 'net' + duplicated scan + null + zero\n");
log_info("enumerate 'net' + duplicated scan + null + zero");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -337,7 +282,7 @@ static int test_enumerate(struct udev *udev, const char *subsystem) {
test_enumerate_print_list(udev_enumerate);
udev_enumerate_unref(udev_enumerate);
printf("enumerate 'block'\n");
log_info("enumerate 'block'");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -351,7 +296,7 @@ static int test_enumerate(struct udev *udev, const char *subsystem) {
test_enumerate_print_list(udev_enumerate);
udev_enumerate_unref(udev_enumerate);
printf("enumerate 'not block'\n");
log_info("enumerate 'not block'");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -360,7 +305,7 @@ static int test_enumerate(struct udev *udev, const char *subsystem) {
test_enumerate_print_list(udev_enumerate);
udev_enumerate_unref(udev_enumerate);
printf("enumerate 'pci, mem, vc'\n");
log_info("enumerate 'pci, mem, vc'");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -371,7 +316,7 @@ static int test_enumerate(struct udev *udev, const char *subsystem) {
test_enumerate_print_list(udev_enumerate);
udev_enumerate_unref(udev_enumerate);
printf("enumerate 'subsystem'\n");
log_info("enumerate 'subsystem'");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -379,7 +324,7 @@ static int test_enumerate(struct udev *udev, const char *subsystem) {
test_enumerate_print_list(udev_enumerate);
udev_enumerate_unref(udev_enumerate);
printf("enumerate 'property IF_FS_*=filesystem'\n");
log_info("enumerate 'property IF_FS_*=filesystem'");
udev_enumerate = udev_enumerate_new(udev);
if (udev_enumerate == NULL)
return -1;
@ -397,32 +342,30 @@ static void test_hwdb(struct udev *udev, const char *modalias) {
hwdb = udev_hwdb_new(udev);
udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0))
printf("'%s'='%s'\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry));
printf("\n");
log_info("'%s'='%s'", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry));
hwdb = udev_hwdb_unref(hwdb);
assert_se(hwdb == NULL);
}
int main(int argc, char *argv[]) {
struct udev *udev = NULL;
_cleanup_udev_unref_ struct udev *udev = NULL;
static const struct option options[] = {
{ "syspath", required_argument, NULL, 'p' },
{ "syspath", required_argument, NULL, 'p' },
{ "subsystem", required_argument, NULL, 's' },
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{}
};
const char *syspath = "/devices/virtual/mem/null";
const char *subsystem = NULL;
char path[1024];
int c;
udev = udev_new();
printf("context: %p\n", udev);
log_info("context: %p", udev);
if (udev == NULL) {
printf("no context\n");
log_info("no context");
return 1;
}
@ -444,14 +387,14 @@ int main(int argc, char *argv[]) {
case 'h':
printf("--debug --syspath= --subsystem= --help\n");
goto out;
return EXIT_SUCCESS;
case 'V':
printf("%s\n", VERSION);
goto out;
return EXIT_SUCCESS;
case '?':
goto out;
return EXIT_FAILURE;
default:
assert_not_reached("Unhandled option code.");
@ -459,14 +402,16 @@ int main(int argc, char *argv[]) {
/* add sys path if needed */
if (!startswith(syspath, "/sys")) {
xsprintf(path, "/sys/%s", syspath);
syspath = path;
}
if (!startswith(syspath, "/sys"))
syspath = strjoina("/sys/", syspath);
test_device(udev, syspath);
test_device_devnum(udev);
test_device_subsys_name(udev);
test_device_subsys_name(udev, "block", "sda");
test_device_subsys_name(udev, "subsystem", "pci");
test_device_subsys_name(udev, "drivers", "scsi:sd");
test_device_subsys_name(udev, "module", "printk");
test_device_parents(udev, syspath);
test_enumerate(udev, subsystem);
@ -476,7 +421,6 @@ int main(int argc, char *argv[]) {
test_hwdb(udev, "usb:v0D50p0011*");
test_monitor(udev);
out:
udev_unref(udev);
return 0;
return EXIT_SUCCESS;
}