#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 "udev-util.h"
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",
- };
+ /* 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;
- return string_table_lookup(skip, ELEMENTSOF(skip), name) >= 0;
+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;
+ 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 (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++;
}
+
+ 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;
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;
}
return log_error_errno(r, "Unknown device \"%s\": %m", *p);
if (arg_wait_for_initialization_timeout > 0) {
- r = device_wait_for_initialization(device, NULL, arg_wait_for_initialization_timeout, NULL);
+ sd_device *d;
+
+ r = device_wait_for_initialization(device, NULL, arg_wait_for_initialization_timeout, &d);
if (r < 0)
return r;
+
+ sd_device_unref(device);
+ device = d;
}
if (action == ACTION_QUERY)