include/linux/cmdline-parser.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Parsing command line, get the partitions information.
   4  *
   5  * Written by Cai Zhiyong <caizhiyong@huawei.com>
   6  *
   7  */
   8 #ifndef CMDLINEPARSEH
   9 #define CMDLINEPARSEH
  10
  11 #include <linux/blkdev.h>
  12 #include <linux/fs.h>
  13 #include <linux/slab.h>
  14
  15 /* partition flags */
  16 #define PF_RDONLY                   0x01 /* Device is read only */
  17 #define PF_POWERUP_LOCK             0x02 /* Always locked after reset */
  18
  19 struct cmdline_subpart {
  20         char name[BDEVNAME_SIZE]; /* partition name, such as 'rootfs' */
  21         sector_t from;
  22         sector_t size;
  23         int flags;
  24         struct cmdline_subpart *next_subpart;
  25 };
  26
  27 struct cmdline_parts {
  28         char name[BDEVNAME_SIZE]; /* block device, such as 'mmcblk0' */
  29         unsigned int nr_subparts;
  30         struct cmdline_subpart *subpart;
  31         struct cmdline_parts *next_parts;
  32 };
  33
  34 void cmdline_parts_free(struct cmdline_parts **parts);
  35
  36 int cmdline_parts_parse(struct cmdline_parts **parts, const char *cmdline);
  37
  38 struct cmdline_parts *cmdline_parts_find(struct cmdline_parts *parts,
  39                                          const char *bdev);
  40
  41 int cmdline_parts_set(struct cmdline_parts *parts, sector_t disk_size,
  42                       int slot,
  43                       int (*add_part)(int, struct cmdline_subpart *, void *),
  44                       void *param);
  45
  46 #endif /* CMDLINEPARSEH */