hop siup z /dev/sd{a,b}... [testcase]

[Paweł Sikora]

$ sh -x test.sh
+ ROOT=/dev/sda1
+ device=/dev/no_partition_found
+ awk -v c=/dev/sda1
                        BEGIN {
                                num_pattern_short = "[0-9a-f][0-9a-f][0-9a-f]";
                                num_pattern = "[0-9a-f]" num_pattern_short;
                                dev_pattern = "[hms][a-z][a-z]([0-9])+";
                                partition = "no_partition_found";
                                min = -1; maj = -1;

                                sub("^0x", "", c);
                                if (c ~ "^" num_pattern_short "$") sub("^", "0", c);
                                if (c ~ "^" num_pattern  "$") {
                                        maj = sprintf("%s",substr(c,1,2));
                                        min = sprintf("%s",substr(c,3));
                                }
                                if (c ~ "^\/dev\/" dev_pattern "$") sub("^/dev/","", c);
                                if (c ~ "^" dev_pattern "$") partition = c;
                        }

                        $4 ~ partition { maj = $1; min = $2; }
                        $1 ~ maj && $2 ~ min { partition = $4; }

                        END {
                                        printf("device=/dev/%s; maj=%s; min=%s;\n", partition, maj, min);
                        }
                         ./test.partitions
+ eval device=/dev/sdb; maj=8; min=1;
+ device=/dev/sdb
+ maj=8
+ min=1


jak widac z ROOT=/dev/sda1 wyszlo /dev/sdb :>

uprasza sie autorow tego awk-owego cuda o poprawke ;)
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major minor  #blocks  name

   8        0  195359927 sda
   8        1   16000708 sda1
   8        2    4000185 sda2
   8        3  175359002 sda3
   8       16  976758455 sdb
  11        0    1048575 sr0
 254        0  976756736 dm-0
 254        1  175357952 dm-1