Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:block\partitions\ibm.c Create Date:2022-07-28 17:31:07
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:This is the main function, called by check.c

Proto:int ibm_partition(struct parsed_partitions *state)

Type:int

Parameter:

TypeParameterName
struct parsed_partitions *state
292  bdev = bdev
297  char type[5] = {0, }
298  char name[7] = {0, }
302  res = 0
303  blocksize = bdev_logical_block_size(bdev)
304  If blocksize <= 0 Then Go to out_exit
306  i_size = NOTE: in a 32bit arch with a preemptable kernel and* an UP compile the i_size_read/write must be atomic* with respect to the local cpu (unlike with preempt disabled),* but they don't need to be atomic with respect to other cpus like in* true SMP (so they
307  If i_size == 0 Then Go to out_exit
309  info = Allocation memory
310  If (info == NULL) Then Go to out_exit
312  geo = Allocation memory
313  If (geo == NULL) Then Go to out_nogeo
315  label = Allocation memory
316  If (label == NULL) Then Go to out_nolab
318  If ioctl_by_bdev(bdev, get device geometry , (unsignedlong)geo) != 0 Then Go to out_freeall
320  If ioctl_by_bdev(bdev, Get information on a dasd device (enhanced) , (unsignedlong)info) != 0 Then
321  kfree(info)
322  info = NULL
325  If find_label(state, info, geo, blocksize, & labelsect, name, type, label) Then
327  If Not strncmp(type, "VOL1", 4) Then
328  res = find_vol1_partitions(state, geo, blocksize, name, label)
330  Else if Not strncmp(type, "LNX1", 4) Then
331  res = find_lnx1_partitions(state, geo, blocksize, name, label, labelsect, i_size, info)
334  Else if Not strncmp(type, "CMS1", 4) Then
335  res = find_cms1_partitions(state, geo, blocksize, name, label, labelsect)
338  Else if info Then
346  res = 1
347  If rmat info like formatted/cdl/ldl/... == DASD_FORMAT_LDL Then
348  strlcat - Append a length-limited, C-string to another*@dest: The string to be appended to*@src: The string to append to it*@count: The size of the destination buffer.
349  size = i_size >> 9
350  offset = (where to find the VOLSER + 1) * (blocksize >> 9)
351  put_partition(state, 1, offset, size - offset)
352  strlcat - Append a length-limited, C-string to another*@dest: The string to be appended to*@src: The string to append to it*@count: The size of the destination buffer.
354  Else res = 0
357  out_freeall :
358  kfree(label)
359  out_nolab :
360  kfree(geo)
361  out_nogeo :
362  kfree(info)
363  out_exit :
364  Return res