modinfo: match more standard module fields and fix version field

Previously, -F version could match the srcversion= string.

before :
  ~ # modinfo -F version tiwlan_drv
  version:        6.1.2012.05.29
  version:        533BB7E5866E52F63B9ACCB
  version:        0x%x, oui=0x%x, 0x%x, 0x%x
  version:        0x%x

  ~ # modinfo tiwlan_drv
  filename:       tiwlan_drv.ko
  author:         Texas Instruments Inc - Retouched by CyanogenDefy
  license:        GPL
  vermagic:       2.6.32.9 preempt mod_unload ARMv7
  parm:           g_sdio_debug_level:debug level
  depends:

now :
  ~ # modinfo -F version tiwlan_drv
  version:        6.1.2012.05.29

  ~ # modinfo tiwlan_drv
  filename:       tiwlan_drv.ko
  license:        GPL
  author:         Texas Instruments Inc - Retouched by CyanogenDefy
  version:        6.1.2012.05.29
  srcversion:     533BB7E5866E52F63B9ACCB
  depends:
  uts_release:    2.6.32.9-g306944c
  vermagic:       2.6.32.9 preempt mod_unload ARMv7
  parm:           g_sdio_debug_level:debug level

This patch also add support for the old "-n" and some other helpers

Change-Id: Icb4e9ca513cbce46b075a6f038799a7a19fb7e22
Signed-off-by: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 16 insertions, 9 deletions

diff --git a/modutils/modinfo.c b/modutils/modinfo.c
index c0910ffed..7c978d1da 100644
--- a/modutils/modinfo.c
+++ b/modutils/modinfo.c
@@ -24,9 +24,9 @@
 
 
 enum {
-        OPT_TAGS = (1 << 8) - 1,
-        OPT_F = (1 << 8), /* field name */
-        OPT_0 = (1 << 9),  /* \0 as separator */
+        OPT_TAGS = (1 << 12) - 1, /* shortcut count */
+        OPT_F = (1 << 12), /* field name */
+        OPT_0 = (1 << 13), /* \0 as separator */
 };
 
 struct modinfo_env {
@@ -49,13 +49,17 @@ static void modinfo(const char *path, const char *version,
 {
         static const char *const shortcuts[] = {
                 "filename",
-                "description",
-                "author",
                 "license",
+                "author",
+                "description",
+                "version",
+                "alias",
+                "srcversion",
+                "depends",
+                "uts_release",
                 "vermagic",
                 "parm",
                 "firmware",
-                "depends",
         };
         size_t len;
         int j, length;
@@ -97,8 +101,11 @@ static void modinfo(const char *path, const char *version,
                         if (ptr == NULL) /* no occurance left, done */
                                 break;
                         if (strncmp(ptr, pattern, length) == 0 && ptr[length] == '=') {
-                                ptr += length + 1;
-                                ptr += display(ptr, pattern, (1<<j) != tags);
+                                /* field prefixes are 0x80 or 0x00 */
+                                if ((ptr[-1] & 0x7F) == '\0') {
+                                        ptr += length + 1;
+                                        ptr += display(ptr, pattern, (1<<j) != tags);
+                                }
                         }
                         ++ptr;
                 }
@@ -131,7 +138,7 @@ int modinfo_main(int argc UNUSED_PARAM, char **argv)
 
         env.field = NULL;
         opt_complementary = "-1"; /* minimum one param */
-        opts = getopt32(argv, "fdalvpF:0", &env.field);
+        opts = getopt32(argv, "nladvAsDumpF:0", &env.field);
         env.tags = opts & OPT_TAGS ? opts & OPT_TAGS : OPT_TAGS;
         argv += optind;