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libudev: use sysfs attr ilist interface for attribute walk

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Signed-off-by: Thomas Egerer <thomas.egerer@secunet.com>
This commit is contained in:
Thomas Egerer 2011-03-04 17:06:43 +01:00 committed by Kay Sievers
parent f180ad259f
commit 95ce1875d7
2 changed files with 28 additions and 35 deletions
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1
libudev/docs/libudev-sections.txt
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@ -54,6 +54,7 @@ udev_device_get_driver
udev_device_get_devnum
udev_device_get_action
udev_device_get_sysattr_value
udev_device_get_sysattr_list_entry
udev_device_get_seqnum
udev_device_get_usec_since_initialized
</SECTION>

62
udev/udevadm-info.c
View File

@ -33,47 +33,39 @@
static void print_all_attributes(struct udev_device *device, const char *key)
{
struct udev *udev = udev_device_get_udev(device);
DIR *dir;
struct dirent *dent;
struct udev_list_entry *sysattr;
dir = opendir(udev_device_get_syspath(device));
if (dir != NULL) {
for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
struct stat statbuf;
const char *value;
size_t len;
udev_list_entry_foreach(sysattr, udev_device_get_sysattr_list_entry(device)) {
const char *name;
const char *value;
size_t len;
if (dent->d_name[0] == '.')
continue;
/* skip symlinks */
if (0 == strcmp("s", udev_list_entry_get_value(sysattr)))
continue;
if (strcmp(dent->d_name, "uevent") == 0)
continue;
if (strcmp(dent->d_name, "dev") == 0)
continue;
name = udev_list_entry_get_name(sysattr);
if (strcmp(name, "uevent") == 0)
continue;
if (strcmp(name, "dev") == 0)
continue;
if (fstatat(dirfd(dir), dent->d_name, &statbuf, AT_SYMLINK_NOFOLLOW) != 0)
continue;
if (S_ISLNK(statbuf.st_mode))
continue;
value = udev_device_get_sysattr_value(device, name);
if (value == NULL)
continue;
dbg(udev_device_get_udev(device), "attr '%s'='%s'\n", name, value);
value = udev_device_get_sysattr_value(device, dent->d_name);
if (value == NULL)
continue;
dbg(udev, "attr '%s'='%s'\n", dent->d_name, value);
/* skip nonprintable attributes */
len = strlen(value);
while (len > 0 && isprint(value[len-1]))
len--;
if (len > 0) {
dbg(udev, "attribute value of '%s' non-printable, skip\n", dent->d_name);
continue;
}
printf(" %s{%s}==\"%s\"\n", key, dent->d_name, value);
/* skip nonprintable attributes */
len = strlen(value);
while (len > 0 && isprint(value[len-1]))
len--;
if (len > 0) {
dbg(udev_device_get_udev(device),
"attribute value of '%s' non-printable, skip\n", name);
continue;
}
closedir(dir);
printf(" %s{%s}==\"%s\"\n", key, name, value);
}
printf("\n");
}