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udevadm: info - add --export format to --device-id-of-file=

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$ udevadm info --export --export-prefix="ROOT_" --device-id-of-file=/
  ROOT_MAJOR=8
  ROOT_MINOR=5
This commit is contained in:
Kay Sievers 2008-07-15 11:54:18 +02:00
parent ad1be3e7ad
commit d1acfc3e0a
1 changed files with 22 additions and 4 deletions
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24
udevinfo.c
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@ -207,13 +207,21 @@ out:
return rc;
}
static int stat_device(const char *name)
static int stat_device(const char *name, int export, const char *prefix)
{
struct stat statbuf;
if (stat(name, &statbuf) != 0)
return -1;
if (export) {
if (prefix == NULL)
prefix = "INFO_";
printf("%sMAJOR=%d\n"
"%sMINOR=%d\n",
prefix, major(statbuf.st_dev),
prefix, minor(statbuf.st_dev));
} else
printf("%d %d\n", major(statbuf.st_dev), minor(statbuf.st_dev));
return 0;
}
@ -223,6 +231,8 @@ int udevinfo(int argc, char *argv[], char *envp[])
int option;
struct udevice *udev;
int root = 0;
int export = 0;
const char *export_prefix = NULL;
static const struct option options[] = {
{ "name", 1, NULL, 'n' },
@ -232,6 +242,8 @@ int udevinfo(int argc, char *argv[], char *envp[])
{ "export-db", 0, NULL, 'e' },
{ "root", 0, NULL, 'r' },
{ "device-id-of-file", 1, NULL, 'd' },
{ "export", 0, NULL, 'x' },
{ "export-prefix", 1, NULL, 'P' },
{ "version", 0, NULL, 1 }, /* -V outputs braindead format */
{ "help", 0, NULL, 'h' },
{}
@ -270,7 +282,7 @@ int udevinfo(int argc, char *argv[], char *envp[])
}
while (1) {
option = getopt_long(argc, argv, "aed:n:p:q:rVh", options, NULL);
option = getopt_long(argc, argv, "aed:n:p:q:rxPVh", options, NULL);
if (option == -1)
break;
@ -354,6 +366,12 @@ int udevinfo(int argc, char *argv[], char *envp[])
case 'e':
export_db();
goto exit;
case 'x':
export = 1;
break;
case 'P':
export_prefix = optarg;
break;
case 1:
printf("%s\n", UDEV_VERSION);
goto exit;
@ -462,7 +480,7 @@ int udevinfo(int argc, char *argv[], char *envp[])
}
break;
case ACTION_DEVICE_ID_FILE:
if (stat_device(name) != 0)
if (stat_device(name, export, export_prefix) != 0)
rc = 6;
break;
case ACTION_ROOT: