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zdev: Add option to select IPL device

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Add new command-line option --ipldev. When specified and IPL was done
from a supported device type, the IPL device is selected for the
requested tool operation.

Example to list IPL device information:

$ lszdev --ipldev

Example to create a persistent configuration for the IPL device:

$ chzdev --enable --persistent --ipldev

Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Peter Oberparleiter
2024-07-04 16:10:17 +02:00
committed by Jan Höppner
parent cad4e9e15b
commit d9a9bd8dcf
14 changed files with 158 additions and 5 deletions
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1
zdev/include/path.h
View File

@@ -23,6 +23,7 @@
#define PATH_MODPROBE "/sbin/modprobe"
#define PATH_CCW_BUS "/sys/bus/ccw"
#define PATH_CCWGROUP_BUS "/sys/bus/ccwgroup"
#define PATH_IPL "/sys/firmware/ipl"
#define PATH_UDEV_RULES "/etc/udev/rules.d"
#define PATH_UDEV_RULES_VOLATILE "/run/udev/rules.d"
#define PATH_PROC "/proc"

1
zdev/include/select.h
View File

@@ -29,6 +29,7 @@ struct select_opts {
unsigned int online:1;
unsigned int offline:1;
unsigned int failed:1;
unsigned int ipldev:1;
struct util_list devids; /* List of struct strlist_node */
struct util_list by_path; /* List of struct strlist_node */
struct util_list by_node; /* List of struct strlist_node */

4
zdev/include/subtype.h
View File

@@ -127,6 +127,7 @@ typedef exit_code_t (*subtype_cb_t)(struct subtype *st, const char *id,
* @device_undefine: Optional: Undefine a device
* @add_definable_ids: Optional: Add IDs of all devices that can be defined to
* specified strlist
* @get_ipldev_id: Optional: If subtype provides IPL device, return its ID
*/
struct subtype {
/* Static data. */
@@ -222,6 +223,7 @@ struct subtype {
exit_code_t (*device_undefine)(struct subtype *, struct device *);
void (*add_definable_ids)(struct subtype *,
struct util_list *);
char *(*get_ipldev_id)(struct subtype *);
};
/* Subtype method accessor functions. */
@@ -287,6 +289,7 @@ exit_code_t subtype_detect_definable(struct subtype *, struct device *);
exit_code_t subtype_device_define(struct subtype *, struct device *);
exit_code_t subtype_device_undefine(struct subtype *, struct device *);
void subtype_add_definable_ids(struct subtype *, struct util_list *);
char *subtype_get_ipldev_id(struct subtype *);
/* Subtype helper functions. */
bool subtype_device_exists(struct subtype *st, const char *id,
@@ -308,6 +311,7 @@ struct subtype *subtype_find(const char *name);
struct attrib *subtype_find_dev_attrib(struct subtype *st, const char *str);
exit_code_t subtype_read_all_devices(struct subtype *st, config_t config,
read_scope_t);
bool subtypes_find_ipldev(struct subtype **st_ptr, char **id_ptr);
bool subtypes_find_by_devnode(struct devnode *devnode,
struct subtype **st_ptr, char **id_ptr);
void subtype_devices_print_all(void);