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Diffstat (limited to 'src/udev/udevadm-info.c')
-rw-r--r--src/udev/udevadm-info.c125
1 files changed, 54 insertions, 71 deletions
diff --git a/src/udev/udevadm-info.c b/src/udev/udevadm-info.c
index a5872efbc3..87225a8fec 100644
--- a/src/udev/udevadm-info.c
+++ b/src/udev/udevadm-info.c
@@ -30,6 +30,8 @@
#include <sys/types.h>
#include "udev.h"
+#include "udev-util.h"
+#include "util.h"
static bool skip_attribute(const char *name)
{
@@ -296,49 +298,50 @@ static struct udev_device *find_device(struct udev *udev, const char *id, const
static int uinfo(struct udev *udev, int argc, char *argv[])
{
- struct udev_device *device = NULL;
+ _cleanup_udev_device_unref_ struct udev_device *device = NULL;
bool root = 0;
bool export = 0;
const char *export_prefix = NULL;
char name[UTIL_PATH_SIZE];
struct udev_list_entry *list_entry;
- int rc = 0;
+ int c;
static const struct option options[] = {
- { "name", required_argument, NULL, 'n' },
- { "path", required_argument, NULL, 'p' },
- { "query", required_argument, NULL, 'q' },
- { "attribute-walk", no_argument, NULL, 'a' },
- { "cleanup-db", no_argument, NULL, 'c' },
- { "export-db", no_argument, NULL, 'e' },
- { "root", no_argument, NULL, 'r' },
+ { "name", required_argument, NULL, 'n' },
+ { "path", required_argument, NULL, 'p' },
+ { "query", required_argument, NULL, 'q' },
+ { "attribute-walk", no_argument, NULL, 'a' },
+ { "cleanup-db", no_argument, NULL, 'c' },
+ { "export-db", no_argument, NULL, 'e' },
+ { "root", no_argument, NULL, 'r' },
{ "device-id-of-file", required_argument, NULL, 'd' },
- { "export", no_argument, NULL, 'x' },
- { "export-prefix", required_argument, NULL, 'P' },
- { "version", no_argument, NULL, 'V' },
- { "help", no_argument, NULL, 'h' },
+ { "export", no_argument, NULL, 'x' },
+ { "export-prefix", required_argument, NULL, 'P' },
+ { "version", no_argument, NULL, 'V' },
+ { "help", no_argument, NULL, 'h' },
{}
};
static const char *usage =
- "Usage: udevadm info OPTIONS\n"
- " --query=<type> query device information:\n"
+ "Usage: udevadm info [OPTIONS] [DEVPATH|FILE]\n"
+ " -q,--query=TYPE query device information:\n"
" name name of device node\n"
" symlink pointing to node\n"
" path sys device path\n"
" property the device properties\n"
" all all values\n"
- " --path=<syspath> sys device path used for query or attribute walk\n"
- " --name=<name> node or symlink name used for query or attribute walk\n"
- " --root prepend dev directory to path names\n"
- " --attribute-walk print all key matches while walking along the chain\n"
+ " -p,--path=SYSPATH sys device path used for query or attribute walk\n"
+ " -n,--name=NAME node or symlink name used for query or attribute walk\n"
+ " -r,--root prepend dev directory to path names\n"
+ " -a,--attribute-walk print all key matches walking along the chain\n"
" of parent devices\n"
- " --device-id-of-file=<file> print major:minor of device containing this file\n"
- " --export export key/value pairs\n"
- " --export-prefix export the key name with a prefix\n"
- " --export-db export the content of the udev database\n"
- " --cleanup-db cleanup the udev database\n"
- " --help\n";
+ " -d,--device-id-of-file=FILE print major:minor of device containing this file\n"
+ " -x,--export export key/value pairs\n"
+ " -P,--export-prefix export the key name with a prefix\n"
+ " -e,--export-db export the content of the udev database\n"
+ " -c,--cleanup-db cleanup the udev database\n"
+ " --version print version of the program\n"
+ " -h,--help print this message\n";
enum action_type {
ACTION_QUERY,
@@ -354,59 +357,48 @@ static int uinfo(struct udev *udev, int argc, char *argv[])
QUERY_ALL,
} query = QUERY_ALL;
- for (;;) {
- int option;
-
- option = getopt_long(argc, argv, "aced:n:p:q:rxP:RVh", options, NULL);
- if (option == -1)
- break;
-
- switch (option) {
+ while ((c = getopt_long(argc, argv, "aced:n:p:q:rxP:RVh", options, NULL)) >= 0)
+ switch (c) {
case 'n': {
if (device != NULL) {
fprintf(stderr, "device already specified\n");
- rc = 2;
- goto exit;
+ return 2;
}
device = find_device(udev, optarg, "/dev/");
if (device == NULL) {
fprintf(stderr, "device node not found\n");
- rc = 2;
- goto exit;
+ return 2;
}
break;
}
case 'p':
if (device != NULL) {
fprintf(stderr, "device already specified\n");
- rc = 2;
- goto exit;
+ return 2;
}
device = find_device(udev, optarg, "/sys");
if (device == NULL) {
fprintf(stderr, "syspath not found\n");
- rc = 2;
- goto exit;
+ return 2;
}
break;
case 'q':
action = ACTION_QUERY;
- if (streq(optarg, "property") || streq(optarg, "env")) {
+ if (streq(optarg, "property") || streq(optarg, "env"))
query = QUERY_PROPERTY;
- } else if (streq(optarg, "name")) {
+ else if (streq(optarg, "name"))
query = QUERY_NAME;
- } else if (streq(optarg, "symlink")) {
+ else if (streq(optarg, "symlink"))
query = QUERY_SYMLINK;
- } else if (streq(optarg, "path")) {
+ else if (streq(optarg, "path"))
query = QUERY_PATH;
- } else if (streq(optarg, "all")) {
+ else if (streq(optarg, "all"))
query = QUERY_ALL;
- } else {
+ else {
fprintf(stderr, "unknown query type\n");
- rc = 3;
- goto exit;
+ return 3;
}
break;
case 'r':
@@ -421,10 +413,10 @@ static int uinfo(struct udev *udev, int argc, char *argv[])
break;
case 'e':
export_devices(udev);
- goto exit;
+ return 0;
case 'c':
cleanup_db(udev);
- goto exit;
+ return 0;
case 'x':
export = true;
break;
@@ -433,29 +425,25 @@ static int uinfo(struct udev *udev, int argc, char *argv[])
break;
case 'V':
printf("%s\n", UDEV_VERSION);
- goto exit;
+ return 0;
case 'h':
printf("%s\n", usage);
- goto exit;
+ return 0;
default:
- rc = 1;
- goto exit;
+ return 1;
}
- }
switch (action) {
case ACTION_QUERY:
if (!device) {
if (!argv[optind]) {
fprintf(stderr, "%s\n", usage);
- rc = 2;
- goto exit;
+ return 2;
}
device = find_device(udev, argv[optind], NULL);
if (!device) {
fprintf(stderr, "Unknown device, --name=, --path=, or absolute path in /dev/ or /sys expected.\n");
- rc = 4;
- goto exit;
+ return 4;
}
}
@@ -465,8 +453,7 @@ static int uinfo(struct udev *udev, int argc, char *argv[])
if (node == NULL) {
fprintf(stderr, "no device node found\n");
- rc = 5;
- goto exit;
+ return 5;
}
if (root)
@@ -490,7 +477,7 @@ static int uinfo(struct udev *udev, int argc, char *argv[])
break;
case QUERY_PATH:
printf("%s\n", udev_device_get_devpath(device));
- goto exit;
+ return 0;
case QUERY_PROPERTY:
list_entry = udev_device_get_properties_list_entry(device);
while (list_entry != NULL) {
@@ -521,26 +508,22 @@ static int uinfo(struct udev *udev, int argc, char *argv[])
device = find_device(udev, argv[optind], NULL);
if (!device) {
fprintf(stderr, "Unknown device, absolute path in /dev/ or /sys expected.\n");
- rc = 4;
- goto exit;
+ return 4;
}
}
if (!device) {
fprintf(stderr, "Unknown device, --name=, --path=, or absolute path in /dev/ or /sys expected.\n");
- rc = 4;
- goto exit;
+ return 4;
}
print_device_chain(device);
break;
case ACTION_DEVICE_ID_FILE:
if (stat_device(name, export, export_prefix) != 0)
- rc = 1;
+ return 1;
break;
}
-exit:
- udev_device_unref(device);
- return rc;
+ return 0;
}
const struct udevadm_cmd udevadm_info = {
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-08-11 10:34:07 +0000