99 lines
2.2 KiB
Diff
99 lines
2.2 KiB
Diff
Index: 1.0.0.rc15/lib/activate/devmapper.c
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===================================================================
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--- 1.0.0.rc15.orig/lib/activate/devmapper.c 2008-06-20 18:03:04.000000000 +0200
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+++ 1.0.0.rc15/lib/activate/devmapper.c 2008-09-24 16:20:58.000000000 +0200
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@@ -207,6 +207,82 @@ run_task(struct lib_context *lc, struct
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return ret;
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}
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+int get_edd_value(unsigned long *value, const char *path)
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+{
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+ FILE *file;
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+ unsigned long v;
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+
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+ file = fopen(path, "r");
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+ if (file == NULL)
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+ return 0;
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+
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+ if (fscanf(file, "%lu", &v) == 0) {
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+ fclose(file);
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+ return 0;
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+ }
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+ fclose(file);
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+
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+ *value = v;
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+ return 1;
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+}
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+
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+#define EDD_PREFIX "/sys/firmware/edd/int13_dev80/"
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+
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+int getgeo_edd(unsigned long *cylinders,
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+ unsigned long *heads,
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+ unsigned long *sectors)
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+{
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+ int res;
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+ unsigned long c, h, s;
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+
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+ res = get_edd_value(&c, EDD_PREFIX "legacy_max_cylinder") &&
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+ get_edd_value(&h, EDD_PREFIX "legacy_max_head") &&
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+ get_edd_value(&s, EDD_PREFIX "legacy_sectors_per_track");
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+
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+ if (!res)
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+ return 0;
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+
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+ *cylinders = c;
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+ *heads = h;
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+ *sectors = s;
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+
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+ return 1;
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+}
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+
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+/* Set the geometry of the device */
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+int set_geometry(struct lib_context *lc, struct raid_set *rs)
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+{
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+ int ret;
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+ struct dm_task *dmt;
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+ unsigned long c, h, sec, st;
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+ char cyl[10], heads[10], sectors[10], start[10];
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+
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+ st = 0;
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+ if (!getgeo_edd(&c, &h, &sec)) {
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+ /* default */
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+ c = 16383;
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+ h = 16;
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+ sec = 63;
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+ }
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+
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+ snprintf(cyl, 10, "%lu", c);
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+ snprintf(heads, 10, "%lu", h);
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+ snprintf(sectors, 10, "%lu", sec);
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+ snprintf(start, 10, "%lu", st);
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+
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+ _init_dm();
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+ ret = (dmt = dm_task_create(DM_DEVICE_SET_GEOMETRY)) &&
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+ dm_task_set_name(dmt, rs->name) &&
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+ dm_task_set_geometry(dmt, cyl, heads, sectors, start);
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+
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+ if (ret)
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+ ret = dm_task_run(dmt);
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+
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+ _exit_dm(dmt);
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+
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+ return ret;
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+}
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+
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/* Create a mapped device. */
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int
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dm_create(struct lib_context *lc, struct raid_set *rs, char *table)
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@@ -216,6 +292,10 @@ dm_create(struct lib_context *lc, struct
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/* Create <dev_name> */
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ret = run_task(lc, rs, table, DM_DEVICE_CREATE);
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+ /* Set geometry */
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+ if (ret)
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+ set_geometry(lc, rs);
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+
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/*
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* In case device creation failed, check if target
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* isn't registered with the device-mapper core
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