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zdev: Implement internal device attributes

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This change adds base infrastructure for implementing internal device
attributes. In the context of the zdev tools, an internal device
attribute is a new type of device attribute with the following
characteristics:

  - Can be set and removed like normal device attributes
  - Affects zdev-internal handling only
  - Does not correspond to an actual device attribute, that is
    it has no representation in SysFS
  - Can not be set in the active configuration
  - Name starts with "zdev:" to prevent conflicts with actual
    device attributes

Values for internal device attributes are stored in udev rules alongside
the normal persistent configuration of a device. They are encoded as
udev environment variables. Note that they have no further effect on
udev processing.

Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Peter Oberparleiter
2017-09-01 11:05:58 +02:00
committed by Jan Höppner
parent 3c5644ccfd
commit c0392efa39
12 changed files with 220 additions and 8 deletions
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zdev/include/misc.h
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@@ -183,6 +183,7 @@ bool str_to_config(const char *, config_t *);
char *quote_str(const char *, int);
char *unquote_str(const char *);
char *shrink_str(const char *);
char *misc_strrstr(const char *haystack, const char *needle);
struct util_list *strlist_new(void);
void strlist_free(struct util_list *);