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zdev: Add support for handling auto-configuration data

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Auto-configuration is the name of a new configuration target that is
supported by chzdev and lszdev besides the existing active and
persistent configuration targets. Directives created in this new
configuration are stored as udev rules in the /run/udev/rules.d
directory.

Auto-configuration directives are only in effect if there are no
directives for the same device in the user-provided persistent
configuration. This allows users to override auto-configuration
directives if necessary.

Due to the volatile nature of the /run directory, auto-configuration
directives are cleared on reboot. Therefore mechanisms that generate
auto-configuration directives must recreate them on every boot.

The lszdev tool displays auto-configuration data both in list view
as well as in detail view. Users can specify the new option --auto-conf
to only show data from this configuration target.

Mechanisms that generate automated configuration directives can use
chzdev together with the --auto-conf option to create the corresponding
udev rules.

Note: This change does not include a mechanism that generates
      auto-configuration directives.

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 11:05:55 +02:00
committed by Jan Höppner
parent a86fb8b091
commit fe68ec513d
32 changed files with 911 additions and 286 deletions
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10
zdev/include/udev_zfcp_lun.h
View File

@@ -15,10 +15,10 @@
struct device;
void udev_zfcp_lun_add_device_ids(struct util_list *);
bool udev_zfcp_lun_exists(const char *);
exit_code_t udev_zfcp_lun_read_device(struct device *);
exit_code_t udev_zfcp_lun_write_device(struct device *);
exit_code_t udev_zfcp_lun_remove_rule(const char *);
void udev_zfcp_lun_add_device_ids(struct util_list *list, bool autoconf);
bool udev_zfcp_lun_exists(const char *id, bool autoconf);
exit_code_t udev_zfcp_lun_read_device(struct device *dev, bool autoconf);
exit_code_t udev_zfcp_lun_write_device(struct device *dev, bool autoconf);
exit_code_t udev_zfcp_lun_remove_rule(const char *id, bool autoconf);
#endif /* UDEV_ZFCP_LUN_H */