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Diffstat (limited to 'udev/lib/libudev-device.c')
-rw-r--r--udev/lib/libudev-device.c93
1 files changed, 64 insertions, 29 deletions
diff --git a/udev/lib/libudev-device.c b/udev/lib/libudev-device.c
index 943e104bf6..2f685bd8e8 100644
--- a/udev/lib/libudev-device.c
+++ b/udev/lib/libudev-device.c
@@ -25,6 +25,7 @@
#include <string.h>
#include <dirent.h>
#include <fcntl.h>
+#include <ctype.h>
#include <sys/stat.h>
#include "libudev.h"
@@ -36,10 +37,11 @@ struct udev_device {
struct udev_device *parent_device;
char *syspath;
const char *devpath;
- const char *sysname;
+ char *sysname;
+ const char *sysnum;
char *devnode;
char *subsystem;
- struct udev_list_node devlink_list;
+ struct udev_list_node devlinks_list;
struct udev_list_node properties_list;
char *action;
int event_timeout;
@@ -82,6 +84,7 @@ static int device_read_db(struct udev_device *udev_device)
}
if ((stats.st_mode & S_IFMT) == S_IFLNK) {
char target[UTIL_PATH_SIZE];
+ char devnode[UTIL_PATH_SIZE];
int target_len;
char *next;
@@ -98,10 +101,12 @@ static int device_read_db(struct udev_device *udev_device)
next[0] = '\0';
next = &next[1];
}
- if (asprintf(&udev_device->devnode, "%s/%s", udev_get_dev_path(udev_device->udev), target) < 0)
- return -ENOMEM;
+ util_strlcpy(devnode, udev_get_dev_path(udev_device->udev), sizeof(devnode));
+ util_strlcat(devnode, "/", sizeof(devnode));
+ util_strlcat(devnode, target, sizeof(devnode));
+ udev_device_set_devnode(udev_device, devnode);
while (next != NULL) {
- char linkname[UTIL_PATH_SIZE];
+ char devlink[UTIL_PATH_SIZE];
const char *lnk;
lnk = next;
@@ -110,10 +115,10 @@ static int device_read_db(struct udev_device *udev_device)
next[0] = '\0';
next = &next[1];
}
- util_strlcpy(linkname, udev_get_dev_path(udev_device->udev), sizeof(linkname));
- util_strlcat(linkname, "/", sizeof(linkname));
- util_strlcat(linkname, lnk, sizeof(linkname));
- udev_device_add_devlink(udev_device, linkname);
+ util_strlcpy(devlink, udev_get_dev_path(udev_device->udev), sizeof(devlink));
+ util_strlcat(devlink, "/", sizeof(devlink));
+ util_strlcat(devlink, lnk, sizeof(devlink));
+ udev_device_add_devlink(udev_device, devlink);
}
info(udev_device->udev, "device %p filled with db symlink data '%s'\n", udev_device, udev_device->devnode);
return 0;
@@ -133,10 +138,12 @@ static int device_read_db(struct udev_device *udev_device)
break;
line[len-1] = '\0';
val = &line[2];
-
switch(line[0]) {
case 'N':
- asprintf(&udev_device->devnode, "%s/%s", udev_get_dev_path(udev_device->udev), val);
+ util_strlcpy(filename, udev_get_dev_path(udev_device->udev), sizeof(filename));
+ util_strlcat(filename, "/", sizeof(filename));
+ util_strlcat(filename, val, sizeof(filename));
+ udev_device_set_devnode(udev_device, filename);
break;
case 'S':
util_strlcpy(filename, udev_get_dev_path(udev_device->udev), sizeof(filename));
@@ -205,9 +212,9 @@ static int device_read_uevent_file(struct udev_device *udev_device)
static void device_load_info(struct udev_device *device)
{
+ device->info_loaded = 1;
device_read_uevent_file(device);
device_read_db(device);
- device->info_loaded = 1;
}
void udev_device_set_info_loaded(struct udev_device *device)
@@ -228,7 +235,7 @@ struct udev_device *device_new(struct udev *udev)
memset(udev_device, 0x00, sizeof(struct udev_device));
udev_device->refcount = 1;
udev_device->udev = udev;
- udev_list_init(&udev_device->devlink_list);
+ udev_list_init(&udev_device->devlinks_list);
udev_list_init(&udev_device->properties_list);
udev_list_init(&udev_device->attr_list);
info(udev_device->udev, "udev_device: %p created\n", udev_device);
@@ -579,9 +586,10 @@ void udev_device_unref(struct udev_device *udev_device)
if (udev_device->parent_device != NULL)
udev_device_unref(udev_device->parent_device);
free(udev_device->syspath);
+ free(udev_device->sysname);
free(udev_device->devnode);
free(udev_device->subsystem);
- udev_list_cleanup(udev_device->udev, &udev_device->devlink_list);
+ udev_list_cleanup(udev_device->udev, &udev_device->devlinks_list);
udev_list_cleanup(udev_device->udev, &udev_device->properties_list);
free(udev_device->action);
free(udev_device->driver);
@@ -631,6 +639,13 @@ const char *udev_device_get_sysname(struct udev_device *udev_device)
return udev_device->sysname;
}
+const char *udev_device_get_sysnum(struct udev_device *udev_device)
+{
+ if (udev_device == NULL)
+ return NULL;
+ return udev_device->sysnum;
+}
+
/**
* udev_device_get_devnode:
* @udev_device: udev device
@@ -710,7 +725,7 @@ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *
return NULL;
if (!udev_device->info_loaded)
device_load_info(udev_device);
- return udev_list_get_entry(&udev_device->devlink_list);
+ return udev_list_get_entry(&udev_device->devlinks_list);
}
/**
@@ -781,10 +796,16 @@ const char *udev_device_get_attr_value(struct udev_device *udev_device, const ch
ssize_t size;
const char *val = NULL;
+ if (udev_device == NULL)
+ return NULL;
+ if (attr == NULL)
+ return NULL;
+
/* look for possibly already cached result */
udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_device->attr_list)) {
if (strcmp(udev_list_entry_get_name(list_entry), attr) == 0) {
- info(udev_device->udev, "got '%s' (%s) from cache\n", attr, udev_list_entry_get_value(list_entry));
+ info(udev_device->udev, "got '%s' (%s) from cache\n",
+ attr, udev_list_entry_get_value(list_entry));
return udev_list_entry_get_value(list_entry);
}
}
@@ -848,9 +869,11 @@ const char *udev_device_get_attr_value(struct udev_device *udev_device, const ch
out:
return val;
}
+
int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath)
{
const char *pos;
+ size_t len;
free(udev_device->syspath);
udev_device->syspath = strdup(syspath);
@@ -858,10 +881,25 @@ int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath
return -ENOMEM;
udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))];
udev_device_add_property(udev_device, "DEVPATH", udev_device->devpath);
+
pos = strrchr(udev_device->syspath, '/');
if (pos == NULL)
return -EINVAL;
- udev_device->sysname = &pos[1];
+ udev_device->sysname = strdup(&pos[1]);
+ if (udev_device->sysname == NULL)
+ return -ENOMEM;
+
+ /* some devices have '!' in their name, change that to '/' */
+ len = 0;
+ while (udev_device->sysname[len] != '\0') {
+ if (udev_device->sysname[len] == '!')
+ udev_device->sysname[len] = '/';
+ len++;
+ }
+
+ /* trailing number */
+ while (isdigit(udev_device->sysname[--len]))
+ udev_device->sysnum = &udev_device->sysname[len];
return 0;
}
@@ -876,6 +914,7 @@ int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsy
int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode)
{
+ free(udev_device->devnode);
udev_device->devnode = strdup(devnode);
if (udev_device->devnode == NULL)
return -ENOMEM;
@@ -888,9 +927,8 @@ int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink
char symlinks[UTIL_PATH_SIZE];
struct udev_list_entry *list_entry;
- if (udev_list_entry_add(udev_device->udev, &udev_device->devlink_list, devlink, NULL, 1, 0) == NULL)
+ if (udev_list_entry_add(udev_device->udev, &udev_device->devlinks_list, devlink, NULL, 1, 0) == NULL)
return -ENOMEM;
-
list_entry = udev_device_get_devlinks_list_entry(udev_device);
util_strlcpy(symlinks, udev_list_entry_get_name(list_entry), sizeof(symlinks));
udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) {
@@ -898,18 +936,15 @@ int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink
util_strlcat(symlinks, udev_list_entry_get_name(list_entry), sizeof(symlinks));
}
udev_device_add_property(udev_device, "DEVLINKS", symlinks);
-
return 0;
}
-int udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)
+struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value)
{
- if (udev_list_entry_add(udev_device->udev, &udev_device->properties_list, key, value, 1, 0) == NULL)
- return -ENOMEM;
- return 0;
+ return udev_list_entry_add(udev_device->udev, &udev_device->properties_list, key, value, 1, 0);
}
-int udev_device_add_property_from_string(struct udev_device *udev_device, const char *property)
+struct udev_list_entry *udev_device_add_property_from_string(struct udev_device *udev_device, const char *property)
{
char name[UTIL_PATH_SIZE];
char *val;
@@ -917,21 +952,21 @@ int udev_device_add_property_from_string(struct udev_device *udev_device, const
strncpy(name, property, sizeof(name));
val = strchr(name, '=');
if (val == NULL)
- return -1;
+ return NULL;
val[0] = '\0';
val = &val[1];
if (val[0] == '\0')
val = NULL;
- udev_device_add_property(udev_device, name, val);
- return 0;
+ return udev_device_add_property(udev_device, name, val);
}
int udev_device_set_action(struct udev_device *udev_device, const char *action)
{
- udev_device_add_property(udev_device, "ACTION", action);
+ free(udev_device->action);
udev_device->action = strdup(action);
if (udev_device->action == NULL)
return -ENOMEM;
+ udev_device_add_property(udev_device, "ACTION", action);
return 0;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-05 12:14:52 +0000