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disk.c: support for glob patterns in disk label

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This commit is contained in:
Anton V. Boyarshinov 2010-11-17 15:05:26 +03:00
parent 34a510f746
commit 1fe7454b84
1 changed files with 16 additions and 8 deletions
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24
disk.c
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@ -27,6 +27,7 @@
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <glob.h>
#include "stage1.h"
#include "frontend.h"
#include "modules.h"
@ -152,7 +153,9 @@ static enum return_type try_with_partition(char *choice);
static enum return_type try_with_uuidlabel()
{
char device_fullname[64];
char device_fullname[128];
char device_pattern[128];
glob_t globbuf;
char devname[50];
struct stat statbuf;
int len;
@ -165,14 +168,19 @@ static enum return_type try_with_uuidlabel()
return try_with_partition(strrchr(devname, '/') + 1);
}
strcpy(device_fullname, "/dev/disk/by-label/");
strcat(device_fullname, get_auto_value("label"));
if (stat(device_fullname, &statbuf) == 0 && S_ISBLK(statbuf.st_mode) &&
(len = readlink(device_fullname, devname, sizeof(devname))) != -1) {
devname[len] = 0;
return try_with_partition(strrchr(devname, '/') + 1);
strcpy(device_pattern, "/dev/disk/by-label/");
strcat(device_pattern, get_auto_value("label"));
/* Allow to use glob match in label, like automatic=method:disk,label:ALT* */
if( glob(device_pattern, 0, NULL, &globbuf) == 0 ) {
strcpy(device_fullname, globbuf.gl_pathv[0]);
if (stat(device_fullname, &statbuf) == 0 && S_ISBLK(statbuf.st_mode) &&
(len = readlink(device_fullname, devname, sizeof(devname))) != -1) {
devname[len] = 0;
globfree(&globbuf);
return try_with_partition(strrchr(devname, '/') + 1);
}
}
globfree(&globbuf);
return RETURN_ERROR;
}