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zipl: expand interface of disk_write_block_aligned_base()

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Provide helper functions disk_write_block_buffer_align()
and add_component_buffer_align() to align offset of the record
on specified block size boundary and to save the offset, where
the record was made at.

This will be used by a later patch.

Reviewed-by: Stefan Haberland <sth@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Eduard Shishkin
2020-10-15 14:44:56 +02:00
committed by Jan Höppner
parent 2ae44cb794
commit bbeb0f8445
3 changed files with 73 additions and 35 deletions
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20
zipl/src/bootmap.c
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@@ -372,9 +372,11 @@ add_component_file(int fd, const char *filename, address_t load_address,
}
static int
add_component_buffer(int fd, void* buffer, size_t size, component_data data,
void* component, struct disk_info* info,
struct component_loc *location, int type)
add_component_buffer_align(int fd, void *buffer, size_t size,
component_data data, void *component,
struct disk_info *info,
struct component_loc *location, int type,
int align, off_t *offset)
{
struct component_loc loc;
disk_blockptr_t segment;
@@ -383,7 +385,8 @@ add_component_buffer(int fd, void* buffer, size_t size, component_data data,
int rc;
/* Write buffer */
count = disk_write_block_buffer(fd, 0, buffer, size, &list, info);
count = disk_write_block_buffer_align(fd, 0, buffer, size, &list, info,
align, offset);
if (count == 0) {
error_text("Could not write to bootmap file");
return -1;
@@ -410,6 +413,15 @@ add_component_buffer(int fd, void* buffer, size_t size, component_data data,
return rc;
}
static int
add_component_buffer(int fd, void *buffer, size_t size, component_data data,
void *component, struct disk_info *info,
struct component_loc *location, int type)
{
return add_component_buffer_align(fd, buffer, size, data, component,
info, location, type,
info->phy_block_size, NULL);
}
static int
add_dummy_buffer(int fd, size_t size, address_t addr, void *component,