Commit | Line | Data |
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63eba147 JA |
1 | /* |
2 | * blktrace output analysis: generate a timeline & gather statistics | |
3 | * | |
4 | * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | #include <stdio.h> | |
63eba147 | 22 | #include "globals.h" |
6eb42155 | 23 | |
c053af42 AB |
24 | struct devmap { |
25 | struct list_head head; | |
26 | char device[32], devno[32]; | |
27 | }; | |
6eb42155 | 28 | |
c053af42 AB |
29 | LIST_HEAD(all_devmaps); |
30 | ||
31 | static int dev_map_add(char *line) | |
69040794 AB |
32 | { |
33 | struct devmap *dmp; | |
34 | ||
c053af42 AB |
35 | if (strstr(line, "Device") != NULL) |
36 | return 1; | |
37 | ||
38 | dmp = malloc(sizeof(struct devmap)); | |
39 | if (sscanf(line, "%s %s", dmp->device, dmp->devno) != 2) { | |
69040794 | 40 | free(dmp); |
c053af42 | 41 | return 1; |
69040794 | 42 | } |
69040794 | 43 | |
c053af42 AB |
44 | list_add_tail(&dmp->head, &all_devmaps); |
45 | return 0; | |
63eba147 JA |
46 | } |
47 | ||
c053af42 | 48 | char *dev_map_find(__u32 device) |
63eba147 JA |
49 | { |
50 | char this[128]; | |
c053af42 | 51 | struct list_head *p; |
63eba147 JA |
52 | |
53 | sprintf(this, "%u,%u", MAJOR(device), MINOR(device)); | |
c053af42 AB |
54 | __list_for_each(p, &all_devmaps) { |
55 | struct devmap *dmp = list_entry(p, struct devmap, head); | |
56 | ||
63eba147 | 57 | if (!strcmp(this, dmp->devno)) |
c053af42 AB |
58 | return dmp->device; |
59 | } | |
63eba147 | 60 | |
c053af42 | 61 | return NULL; |
63eba147 JA |
62 | } |
63 | ||
64 | int dev_map_read(char *fname) | |
65 | { | |
66 | char line[256]; | |
99bb5ebc | 67 | FILE *fp = my_fopen(fname, "r"); |
63eba147 JA |
68 | |
69 | if (!fp) { | |
70 | perror(fname); | |
71 | return 1; | |
72 | } | |
73 | ||
6119854c | 74 | while (fscanf(fp, "%255[a-zA-Z0-9 :.,/_-]\n", line) == 1) { |
c053af42 | 75 | if (dev_map_add(line)) |
63eba147 | 76 | break; |
63eba147 JA |
77 | } |
78 | ||
6da33045 | 79 | fclose(fp); |
63eba147 JA |
80 | return 0; |
81 | } | |
c053af42 AB |
82 | |
83 | void dev_map_exit(void) | |
84 | { | |
85 | struct list_head *p, *q; | |
86 | ||
87 | list_for_each_safe(p, q, &all_devmaps) { | |
88 | struct devmap *dmp = list_entry(p, struct devmap, head); | |
89 | ||
90 | list_del(&dmp->head); | |
91 | free(dmp); | |
92 | } | |
93 | } |