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zipl/src: Support multiple disk_info structures per logical device

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Replace struct disk_info with new 2 types.

Old type:

struct disk_info {
  A; /* logical device info */
  B; /* basedisk info */
};

New types:

struct disk_info {
  B; /* basedisk info */
};

and

struct device_info {
  A; /* logical device info */
  struct disk_info C [MAX_TARGETS]; /* array of base disks */
};

Here A (logical device info) is the following:

dev_t device;     /* logical device for bootmap creation */
char *name;       /* name of logical device as reetrieved from
                     "/proc/partitions" */
char *drv_name;   /* name of the driver managing the logical
                     device  as retrieved from "/proc/devices",
                     or evaluated */
int fs_block_size;

Refactor the code respectively, to use only the first element of
the array C, so that this patch represents an equivalent transform.


Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Signed-off-by: Steffen Eiden <seiden@linux.ibm.com>
This commit is contained in:
Eduard Shishkin
2025-07-17 16:43:45 +02:00
committed by Steffen Eiden
parent 338bea49c2
commit f375327085
6 changed files with 402 additions and 290 deletions
Download Patch File Download Diff File Expand all files Collapse all files
zipl/include/install.h
+5 -3
View File
@@ -77,7 +77,7 @@ struct install_set {
unsigned int tmp_filename_created:1;
unsigned int skip_prepare:1;
unsigned int print_details:1;
struct disk_info *info;
struct device_info *info;
disk_blockptr_t scsi_dump_sb_blockptr;
};
@@ -127,11 +127,13 @@ int install_mvdump(char* const device[], struct job_target_data* target,
int install_fba_stage1b(struct misc_fd *mfd, disk_blockptr_t **stage1b_list,
blocknum_t *stage1b_count, disk_blockptr_t *stage2_list,
blocknum_t stage2_count, struct disk_info *info);
blocknum_t stage2_count, int fs_block_size,
struct disk_info *info);
int install_eckd_stage1b(struct misc_fd *mfd, disk_blockptr_t **stage1b_list,
blocknum_t *stage1b_count,
disk_blockptr_t *stage2_list,
blocknum_t stage2_count, struct disk_info *info);
blocknum_t stage2_count, int fs_block_size,
struct disk_info *info);
int rewind_tape(int fd);
#endif /* INSTALL_H */