#include <getopt.h>
#include <stddef.h>
#include <stdio.h>
-#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include "device-util.h"
#include "dirent-util.h"
#include "fd-util.h"
+#include "sort-util.h"
+#include "string-table.h"
#include "string-util.h"
-#include "udevadm.h"
+#include "udev-util.h"
#include "udevadm-util.h"
+#include "udevadm.h"
+
+typedef enum ActionType {
+ ACTION_QUERY,
+ ACTION_ATTRIBUTE_WALK,
+ ACTION_DEVICE_ID_FILE,
+} ActionType;
+
+typedef enum QueryType {
+ QUERY_NAME,
+ QUERY_PATH,
+ QUERY_SYMLINK,
+ QUERY_PROPERTY,
+ QUERY_ALL,
+} QueryType;
+
+static bool arg_root = false;
+static bool arg_export = false;
+static const char *arg_export_prefix = NULL;
+static usec_t arg_wait_for_initialization_timeout = 0;
static bool skip_attribute(const char *name) {
- static const char* const skip[] = {
- "uevent",
- "dev",
- "modalias",
- "resource",
- "driver",
- "subsystem",
- "module",
- };
- unsigned i;
+ /* Those are either displayed separately or should not be shown at all. */
+ return STR_IN_SET(name,
+ "uevent",
+ "dev",
+ "modalias",
+ "resource",
+ "driver",
+ "subsystem",
+ "module");
+}
+
+typedef struct SysAttr {
+ const char *name;
+ const char *value;
+} SysAttr;
- for (i = 0; i < ELEMENTSOF(skip); i++)
- if (streq(name, skip[i]))
- return true;
- return false;
+static int sysattr_compare(const SysAttr *a, const SysAttr *b) {
+ return strcmp(a->name, b->name);
}
-static void print_all_attributes(sd_device *device, const char *key) {
+static int print_all_attributes(sd_device *device, bool is_parent) {
+ _cleanup_free_ SysAttr *sysattrs = NULL;
+ size_t n_items = 0, n_allocated = 0;
const char *name, *value;
- FOREACH_DEVICE_PROPERTY(device, name, value) {
+ value = NULL;
+ (void) sd_device_get_devpath(device, &value);
+ printf(" looking at %sdevice '%s':\n", is_parent ? "parent " : "", strempty(value));
+
+ value = NULL;
+ (void) sd_device_get_sysname(device, &value);
+ printf(" %s==\"%s\"\n", is_parent ? "KERNELS" : "KERNEL", strempty(value));
+
+ value = NULL;
+ (void) sd_device_get_subsystem(device, &value);
+ printf(" %s==\"%s\"\n", is_parent ? "SUBSYSTEMS" : "SUBSYSTEM", strempty(value));
+
+ value = NULL;
+ (void) sd_device_get_driver(device, &value);
+ printf(" %s==\"%s\"\n", is_parent ? "DRIVERS" : "DRIVER", strempty(value));
+
+ FOREACH_DEVICE_SYSATTR(device, name) {
size_t len;
if (skip_attribute(name))
continue;
+ if (sd_device_get_sysattr_value(device, name, &value) < 0)
+ continue;
+
/* skip any values that look like a path */
if (value[0] == '/')
continue;
/* skip nonprintable attributes */
len = strlen(value);
- while (len > 0 && isprint(value[len-1]))
+ while (len > 0 && isprint((unsigned char) value[len-1]))
len--;
if (len > 0)
continue;
- printf(" %s{%s}==\"%s\"\n", key, name, value);
+ if (!GREEDY_REALLOC(sysattrs, n_allocated, n_items + 1))
+ return log_oom();
+
+ sysattrs[n_items] = (SysAttr) {
+ .name = name,
+ .value = value,
+ };
+ n_items++;
}
- printf("\n");
+
+ typesafe_qsort(sysattrs, n_items, sysattr_compare);
+
+ for (size_t i = 0; i < n_items; i++)
+ printf(" %s{%s}==\"%s\"\n", is_parent ? "ATTRS" : "ATTR", sysattrs[i].name, sysattrs[i].value);
+
+ puts("");
+
+ return 0;
}
static int print_device_chain(sd_device *device) {
sd_device *child, *parent;
- const char *str;
+ int r;
printf("\n"
"Udevadm info starts with the device specified by the devpath and then\n"
"and the attributes from one single parent device.\n"
"\n");
- (void) sd_device_get_devpath(device, &str);
- printf(" looking at device '%s':\n", str);
- (void) sd_device_get_sysname(device, &str);
- printf(" KERNEL==\"%s\"\n", str);
- if (sd_device_get_subsystem(device, &str) < 0)
- str = "";
- printf(" SUBSYSTEM==\"%s\"\n", str);
- if (sd_device_get_driver(device, &str) < 0)
- str = "";
- printf(" DRIVER==\"%s\"\n", str);
- print_all_attributes(device, "ATTR");
+ r = print_all_attributes(device, false);
+ if (r < 0)
+ return r;
for (child = device; sd_device_get_parent(child, &parent) >= 0; child = parent) {
- (void) sd_device_get_devpath(parent, &str);
- printf(" looking at parent device '%s':\n", str);
- (void) sd_device_get_sysname(parent, &str);
- printf(" KERNELS==\"%s\"\n", str);
- if (sd_device_get_subsystem(parent, &str) < 0)
- str = "";
- printf(" SUBSYSTEMS==\"%s\"\n", str);
- if (sd_device_get_driver(parent, &str) < 0)
- str = "";
- printf(" DRIVERS==\"%s\"\n", str);
- print_all_attributes(parent, "ATTRS");
+ r = print_all_attributes(parent, true);
+ if (r < 0)
+ return r;
}
return 0;
}
-static void print_record(sd_device *device) {
+static int print_record(sd_device *device) {
const char *str, *val;
int i;
(void) sd_device_get_devpath(device, &str);
printf("P: %s\n", str);
- if (sd_device_get_devname(device, &str) >= 0)
- printf("N: %s\n", str + STRLEN("/dev/"));
+ if (sd_device_get_devname(device, &str) >= 0) {
+ assert_se(val = path_startswith(str, "/dev/"));
+ printf("N: %s\n", val);
+ }
if (device_get_devlink_priority(device, &i) >= 0)
printf("L: %i\n", i);
- FOREACH_DEVICE_DEVLINK(device, str)
- printf("S: %s\n", str + STRLEN("/dev/"));
+ FOREACH_DEVICE_DEVLINK(device, str) {
+ assert_se(val = path_startswith(str, "/dev/"));
+ printf("S: %s\n", val);
+ }
FOREACH_DEVICE_PROPERTY(device, str, val)
printf("E: %s=%s\n", str, val);
- printf("\n");
+ puts("");
+ return 0;
}
static int stat_device(const char *name, bool export, const char *prefix) {
r = sd_device_enumerator_new(&e);
if (r < 0)
- return r;
+ return log_oom();
r = sd_device_enumerator_allow_uninitialized(e);
if (r < 0)
- return r;
+ return log_error_errno(r, "Failed to set allowing uninitialized flag: %m");
r = device_enumerator_scan_devices(e);
if (r < 0)
- return r;
+ return log_error_errno(r, "Failed to scan devices: %m");
FOREACH_DEVICE_AND_SUBSYSTEM(e, d)
- print_record(d);
+ (void) print_record(d);
return 0;
}
cleanup_dir(dir5, 0, 1);
}
-static int help(void) {
+static int query_device(QueryType query, sd_device* device) {
+ int r;
+
+ assert(device);
+
+ switch(query) {
+ case QUERY_NAME: {
+ const char *node;
+
+ r = sd_device_get_devname(device, &node);
+ if (r < 0)
+ return log_error_errno(r, "No device node found: %m");
+
+ if (!arg_root)
+ assert_se(node = path_startswith(node, "/dev/"));
+ printf("%s\n", node);
+ return 0;
+ }
+
+ case QUERY_SYMLINK: {
+ const char *devlink, *prefix = "";
+
+ FOREACH_DEVICE_DEVLINK(device, devlink) {
+ if (!arg_root)
+ assert_se(devlink = path_startswith(devlink, "/dev/"));
+ printf("%s%s", prefix, devlink);
+ prefix = " ";
+ }
+ puts("");
+ return 0;
+ }
+
+ case QUERY_PATH: {
+ const char *devpath;
+
+ r = sd_device_get_devpath(device, &devpath);
+ if (r < 0)
+ return log_error_errno(r, "Failed to get device path: %m");
+ printf("%s\n", devpath);
+ return 0;
+ }
+
+ case QUERY_PROPERTY: {
+ const char *key, *value;
+
+ FOREACH_DEVICE_PROPERTY(device, key, value)
+ if (arg_export)
+ printf("%s%s='%s'\n", strempty(arg_export_prefix), key, value);
+ else
+ printf("%s=%s\n", key, value);
+ return 0;
+ }
+
+ case QUERY_ALL:
+ return print_record(device);
+ }
+
+ assert_not_reached("unknown query type");
+ return 0;
+}
+
+static int help(void) {
printf("%s info [OPTIONS] [DEVPATH|FILE]\n\n"
"Query sysfs or the udev database.\n\n"
" -h --help Print this message\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 Clean up the udev database\n"
+ " -w --wait-for-initialization[=SECONDS]\n"
+ " Wait for device to be initialized\n"
, program_invocation_short_name);
return 0;
}
int info_main(int argc, char *argv[], void *userdata) {
- _cleanup_(sd_device_unrefp) sd_device *device = NULL;
- bool root = false, export = false;
+ _cleanup_strv_free_ char **devices = NULL;
_cleanup_free_ char *name = NULL;
- const char *export_prefix = NULL;
int c, r;
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' },
- { "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' },
+ { "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' },
+ { "wait-for-initialization", optional_argument, NULL, 'w' },
+ { "version", no_argument, NULL, 'V' },
+ { "help", no_argument, NULL, 'h' },
{}
};
- enum action_type {
- ACTION_QUERY,
- ACTION_ATTRIBUTE_WALK,
- ACTION_DEVICE_ID_FILE,
- } action = ACTION_QUERY;
-
- enum query_type {
- QUERY_NAME,
- QUERY_PATH,
- QUERY_SYMLINK,
- QUERY_PROPERTY,
- QUERY_ALL,
- } query = QUERY_ALL;
-
- while ((c = getopt_long(argc, argv, "aced:n:p:q:rxP:RVh", options, NULL)) >= 0)
+ ActionType action = ACTION_QUERY;
+ QueryType query = QUERY_ALL;
+
+ while ((c = getopt_long(argc, argv, "aced:n:p:q:rxP:w::Vh", options, NULL)) >= 0)
switch (c) {
case 'n':
- if (device) {
- log_error("device already specified");
- return -EINVAL;
- }
+ case 'p': {
+ const char *prefix = c == 'n' ? "/dev/" : "/sys/";
+ char *path;
- r = find_device(optarg, "/dev/", &device);
- if (r < 0)
- return log_error_errno(r, "device node not found: %m");
- break;
- case 'p':
- if (device) {
- log_error("device already specified");
- return -EINVAL;
- }
+ path = path_join(path_startswith(optarg, prefix) ? NULL : prefix, optarg);
+ if (!path)
+ return log_oom();
- r = find_device(optarg, "/sys", &device);
+ r = strv_consume(&devices, path);
if (r < 0)
- return log_error_errno(r, "syspath not found: %m");
+ return log_oom();
break;
+ }
+
case 'q':
action = ACTION_QUERY;
if (streq(optarg, "property") || streq(optarg, "env"))
query = QUERY_PATH;
else if (streq(optarg, "all"))
query = QUERY_ALL;
- else {
- log_error("unknown query type");
- return -EINVAL;
- }
+ else
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "unknown query type");
break;
case 'r':
- root = true;
+ arg_root = true;
break;
case 'd':
action = ACTION_DEVICE_ID_FILE;
cleanup_db();
return 0;
case 'x':
- export = true;
+ arg_export = true;
break;
case 'P':
- export_prefix = optarg;
+ arg_export = true;
+ arg_export_prefix = optarg;
+ break;
+ case 'w':
+ if (optarg) {
+ r = parse_sec(optarg, &arg_wait_for_initialization_timeout);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse timeout value: %m");
+ } else
+ arg_wait_for_initialization_timeout = USEC_INFINITY;
break;
case 'V':
return print_version();
assert_not_reached("Unknown option");
}
- switch (action) {
- case ACTION_QUERY:
- if (!device) {
- if (!argv[optind]) {
- help();
- return -EINVAL;
- }
- r = find_device(argv[optind], NULL, &device);
- if (r < 0)
- return log_error_errno(r, "Unknown device, --name=, --path=, or absolute path in /dev/ or /sys expected: %m");
- }
-
- switch(query) {
- case QUERY_NAME: {
- const char *node;
+ if (action == ACTION_DEVICE_ID_FILE) {
+ if (argv[optind])
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Positional arguments are not allowed with -d/--device-id-of-file.");
+ assert(name);
+ return stat_device(name, arg_export, arg_export_prefix);
+ }
- r = sd_device_get_devname(device, &node);
- if (r < 0)
- return log_error_errno(r, "no device node found: %m");
+ r = strv_extend_strv(&devices, argv + optind, false);
+ if (r < 0)
+ return log_error_errno(r, "Failed to build argument list: %m");
+
+ if (strv_isempty(devices))
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "A device name or path is required");
+ if (action == ACTION_ATTRIBUTE_WALK && strv_length(devices) > 1)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "Only one device may be specified with -a/--attribute-walk");
+
+ char **p;
+ STRV_FOREACH(p, devices) {
+ _cleanup_(sd_device_unrefp) sd_device *device = NULL;
+
+ r = find_device(*p, NULL, &device);
+ if (r == -EINVAL)
+ return log_error_errno(r, "Bad argument \"%s\", expected an absolute path in /dev/ or /sys or a unit name: %m", *p);
+ if (r < 0)
+ return log_error_errno(r, "Unknown device \"%s\": %m", *p);
- if (root)
- printf("%s\n", node);
- else
- printf("%s\n", node + STRLEN("/dev/"));
- break;
- }
- case QUERY_SYMLINK: {
- const char *devlink;
- bool first = true;
-
- FOREACH_DEVICE_DEVLINK(device, devlink) {
- if (!first)
- printf(" ");
- if (root)
- printf("%s", devlink);
- else
- printf("%s", devlink + STRLEN("/dev/"));
-
- first = false;
- }
- printf("\n");
- break;
- }
- case QUERY_PATH: {
- const char *devpath;
+ if (arg_wait_for_initialization_timeout > 0) {
+ sd_device *d;
- r = sd_device_get_devpath(device, &devpath);
+ r = device_wait_for_initialization(device, NULL, arg_wait_for_initialization_timeout, &d);
if (r < 0)
- return log_error_errno(r, "Failed to get device path: %m");
+ return r;
- printf("%s\n", devpath);
- return 0;
+ sd_device_unref(device);
+ device = d;
}
- case QUERY_PROPERTY: {
- const char *key, *value;
-
- FOREACH_DEVICE_PROPERTY(device, key, value)
- if (export)
- printf("%s%s='%s'\n", strempty(export_prefix), key, value);
- else
- printf("%s=%s\n", key, value);
- break;
- }
- case QUERY_ALL:
- print_record(device);
- break;
- default:
- assert_not_reached("unknown query type");
- }
- break;
- case ACTION_ATTRIBUTE_WALK:
- if (!device && argv[optind]) {
- r = find_device(argv[optind], NULL, &device);
- if (r < 0)
- return log_error_errno(r, "Unknown device, absolute path in /dev/ or /sys expected: %m");
- }
- if (!device) {
- log_error("Unknown device, --name=, --path=, or absolute path in /dev/ or /sys expected.");
- return -EINVAL;
- }
- print_device_chain(device);
- break;
- case ACTION_DEVICE_ID_FILE:
- r = stat_device(name, export, export_prefix);
+ if (action == ACTION_QUERY)
+ r = query_device(query, device);
+ else if (action == ACTION_ATTRIBUTE_WALK)
+ r = print_device_chain(device);
+ else
+ assert_not_reached("Unknown action");
if (r < 0)
return r;
- break;
}
return 0;
projects / thirdparty / systemd.git / blobdiff