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https://github.com/systemd/systemd-stable.git
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udevinfo: do not show symlinks as attributes in --attribute-walk
This commit is contained in:
parent
e136a3360b
commit
492e76c9c1
49
udev_sysfs.c
49
udev_sysfs.c
@ -397,28 +397,37 @@ char *sysfs_attr_get_value(const char *devpath, const char *attr_name)
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attr->value = attr->value_local;
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}
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}
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} else {
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/* read attribute value */
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fd = open(path_full, O_RDONLY);
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if (fd < 0) {
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dbg("attribute '%s' does not exist", path_full);
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goto out;
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}
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size = read(fd, value, sizeof(value));
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close(fd);
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if (size < 0)
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goto out;
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if (size == sizeof(value))
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goto out;
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/* got a valid value, store and return it */
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value[size] = '\0';
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remove_trailing_chars(value, '\n');
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dbg("cache '%s' with attribute value '%s'", path_full, value);
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strlcpy(attr->value_local, value, sizeof(attr->value_local));
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attr->value = attr->value_local;
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goto out;
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}
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/* skip directories */
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if (S_ISDIR(statbuf.st_mode))
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goto out;
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/* skip non-readable files */
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if ((statbuf.st_mode & S_IRUSR) == 0)
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goto out;
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/* read attribute value */
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fd = open(path_full, O_RDONLY);
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if (fd < 0) {
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dbg("attribute '%s' does not exist", path_full);
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goto out;
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}
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size = read(fd, value, sizeof(value));
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close(fd);
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if (size < 0)
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goto out;
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if (size == sizeof(value))
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goto out;
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/* got a valid value, store and return it */
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value[size] = '\0';
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remove_trailing_chars(value, '\n');
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dbg("cache '%s' with attribute value '%s'", path_full, value);
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strlcpy(attr->value_local, value, sizeof(attr->value_local));
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attr->value = attr->value_local;
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out:
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return attr->value;
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}
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15
udevinfo.c
15
udevinfo.c
@ -26,6 +26,8 @@
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#include <dirent.h>
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#include <errno.h>
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#include <getopt.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "udev.h"
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@ -56,10 +58,23 @@ static void print_all_attributes(const char *devpath, const char *key)
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dir = opendir(path);
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if (dir != NULL) {
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for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
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struct stat statbuf;
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char filename[PATH_SIZE];
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char *attr_value;
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char value[NAME_SIZE];
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size_t len;
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if (dent->d_name[0] == '.')
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continue;
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strlcpy(filename, path, sizeof(filename));
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strlcat(filename, "/", sizeof(filename));
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strlcat(filename, dent->d_name, sizeof(filename));
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if (lstat(filename, &statbuf) != 0)
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continue;
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if (S_ISLNK(statbuf.st_mode))
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continue;
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attr_value = sysfs_attr_get_value(devpath, dent->d_name);
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if (attr_value == NULL)
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continue;
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