Mercurial > hg > toybox
annotate toys/other/modinfo.c @ 877:37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
author | Rob Landley <rob@landley.net> |
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date | Wed, 24 Apr 2013 03:04:31 -0500 |
parents | 786841fdb1e0 |
children | ac9991f66d0d |
rev | line source |
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1 /* modinfo.c - Display module info |
620 | 2 * |
3 * Copyright 2012 Andre Renaud <andre@bluewatersys.com> | |
4 | |
5 USE_MODINFO(NEWTOY(modinfo, "<1F:0", TOYFLAG_BIN)) | |
6 | |
7 config MODINFO | |
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8 bool "modinfo" |
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9 default y |
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10 help |
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11 usage: modinfo [-0] [-F field] [modulename...] |
620 | 12 */ |
13 | |
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New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
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14 #define FOR_modinfo |
620 | 15 #include "toys.h" |
16 | |
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New build infrastructure to generate FLAG_ macros and TT alias, #define FOR_commandname before #including toys.h to trigger it. Rename DEFINE_GLOBALS() to just GLOBALS() (because I could never remember if it was DECLARE_GLOBALS). Convert existing commands to use new infrastructure, and replace optflag constants with FLAG_ macros where appropriate.
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17 GLOBALS( |
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18 char *field; |
620 | 19 ) |
20 | |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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21 static char *modinfo_tags[] = { |
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22 "alias", "license", "description", "author", "vermagic", |
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23 "srcversion", "intree", "parm", "depends", |
620 | 24 }; |
25 | |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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26 static void output_field(char *field, char *value) |
620 | 27 { |
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28 int len; |
620 | 29 |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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30 if (TT.field && strcmp(TT.field, field)) return; |
620 | 31 |
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32 len = strlen(field); |
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33 |
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34 if (TT.field) xprintf("%s", value); |
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35 else xprintf("%s:%*s%s", field, 15 - len, "", value); |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
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36 xputc((toys.optflags & FLAG_0) ? 0 : '\n'); |
620 | 37 } |
38 | |
39 static void modinfo_file(struct dirtree *dir) | |
40 { | |
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41 int fd, len, i; |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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42 char *buf, *pos, *full_name; |
620 | 43 |
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44 full_name = dirtree_path(dir, NULL); |
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45 output_field("filename", full_name); |
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46 fd = xopen(full_name, O_RDONLY); |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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47 free(full_name); |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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48 |
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49 len = fdlength(fd); |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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50 if (!(buf = mmap(0, len, PROT_READ, MAP_SHARED, fd, 0))) |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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51 perror_exit("mmap %s", full_name); |
620 | 52 |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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53 for (pos = buf; pos < buf+len; pos++) { |
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54 if (*pos) continue; |
620 | 55 |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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56 for (i = 0; i < sizeof(modinfo_tags) / sizeof(*modinfo_tags); i++) { |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
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57 char *str = modinfo_tags[i]; |
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58 int len = strlen(str); |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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59 |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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60 if (!strncmp(pos+1, str, len) && pos[len+1] == '=') |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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61 output_field(str, pos+len+2); |
620 | 62 } |
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63 } |
620 | 64 |
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65 munmap(buf, len); |
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66 close(fd); |
620 | 67 } |
68 | |
69 static int check_module(struct dirtree *new) | |
70 { | |
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71 if (S_ISREG(new->st.st_mode)) { |
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Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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72 char **ss; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
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73 |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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74 for (ss = toys.optargs; *ss; ss++) { |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
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75 char *s = *ss; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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76 int len = 0; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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77 |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
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78 // The kernel treats - and _ the same, so we should too. |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
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79 for (len = 0; s[len]; len++) { |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
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80 if (s[len] == '-' && new->name[len] == '_') continue; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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81 if (s[len] == '_' && new->name[len] == '-') continue; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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82 if (s[len] != new->name[len]) break; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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83 } |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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84 if (s[len] || strcmp(new->name+len, ".ko")) break; |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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85 |
37e668afd008
Isaac Dunham pointed out that the kernel treats - and _ as identical in module names, so modinfo should too. Made it use mmap() while I was there, and some cosmetic refactoring.
Rob Landley <rob@landley.net>
parents:
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86 modinfo_file(new); |
620 | 87 } |
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parents:
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88 } |
620 | 89 |
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90 return dirtree_notdotdot(new); |
620 | 91 } |
92 | |
93 void modinfo_main(void) | |
94 { | |
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95 struct utsname uts; |
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96 |
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97 if (uname(&uts) < 0) perror_exit("bad uname"); |
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98 sprintf(toybuf, "/lib/modules/%s", uts.release); |
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Rob Landley <rob@landley.net>
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99 |
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100 dirtree_read(toybuf, check_module); |
620 | 101 } |