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-rw-r--r--fs/partitions/ibm.c167
1 files changed, 97 insertions, 70 deletions
diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c
index 9f7ad4244f63..1e064c4a4f86 100644
--- a/fs/partitions/ibm.c
+++ b/fs/partitions/ibm.c
@@ -45,7 +45,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
45{ 45{
46 int blocksize, offset, size,res; 46 int blocksize, offset, size,res;
47 loff_t i_size; 47 loff_t i_size;
48 dasd_information_t *info; 48 dasd_information2_t *info;
49 struct hd_geometry *geo; 49 struct hd_geometry *geo;
50 char type[5] = {0,}; 50 char type[5] = {0,};
51 char name[7] = {0,}; 51 char name[7] = {0,};
@@ -64,14 +64,17 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
64 if (i_size == 0) 64 if (i_size == 0)
65 goto out_exit; 65 goto out_exit;
66 66
67 if ((info = kmalloc(sizeof(dasd_information_t), GFP_KERNEL)) == NULL) 67 info = kmalloc(sizeof(dasd_information2_t), GFP_KERNEL);
68 if (info == NULL)
68 goto out_exit; 69 goto out_exit;
69 if ((geo = kmalloc(sizeof(struct hd_geometry), GFP_KERNEL)) == NULL) 70 geo = kmalloc(sizeof(struct hd_geometry), GFP_KERNEL);
71 if (geo == NULL)
70 goto out_nogeo; 72 goto out_nogeo;
71 if ((label = kmalloc(sizeof(union label_t), GFP_KERNEL)) == NULL) 73 label = kmalloc(sizeof(union label_t), GFP_KERNEL);
74 if (label == NULL)
72 goto out_nolab; 75 goto out_nolab;
73 76
74 if (ioctl_by_bdev(bdev, BIODASDINFO, (unsigned long)info) != 0 || 77 if (ioctl_by_bdev(bdev, BIODASDINFO2, (unsigned long)info) != 0 ||
75 ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0) 78 ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0)
76 goto out_freeall; 79 goto out_freeall;
77 80
@@ -96,84 +99,108 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
96 res = 1; 99 res = 1;
97 100
98 /* 101 /*
99 * Three different types: CMS1, VOL1 and LNX1/unlabeled 102 * Three different formats: LDL, CDL and unformated disk
103 *
104 * identified by info->format
105 *
106 * unformated disks we do not have to care about
100 */ 107 */
101 if (strncmp(type, "CMS1", 4) == 0) { 108 if (info->format == DASD_FORMAT_LDL) {
102 /* 109 if (strncmp(type, "CMS1", 4) == 0) {
103 * VM style CMS1 labeled disk 110 /*
104 */ 111 * VM style CMS1 labeled disk
105 if (label->cms.disk_offset != 0) { 112 */
106 printk("CMS1/%8s(MDSK):", name); 113 if (label->cms.disk_offset != 0) {
107 /* disk is reserved minidisk */ 114 printk("CMS1/%8s(MDSK):", name);
108 blocksize = label->cms.block_size; 115 /* disk is reserved minidisk */
109 offset = label->cms.disk_offset; 116 blocksize = label->cms.block_size;
110 size = (label->cms.block_count - 1) * (blocksize >> 9); 117 offset = label->cms.disk_offset;
118 size = (label->cms.block_count - 1)
119 * (blocksize >> 9);
120 } else {
121 printk("CMS1/%8s:", name);
122 offset = (info->label_block + 1);
123 size = i_size >> 9;
124 }
111 } else { 125 } else {
112 printk("CMS1/%8s:", name); 126 /*
127 * Old style LNX1 or unlabeled disk
128 */
129 if (strncmp(type, "LNX1", 4) == 0)
130 printk ("LNX1/%8s:", name);
131 else
132 printk("(nonl)");
113 offset = (info->label_block + 1); 133 offset = (info->label_block + 1);
114 size = i_size >> 9; 134 size = i_size >> 9;
115 } 135 }
116 put_partition(state, 1, offset*(blocksize >> 9), 136 put_partition(state, 1, offset*(blocksize >> 9),
117 size-offset*(blocksize >> 9)); 137 size-offset*(blocksize >> 9));
118 } else if ((strncmp(type, "VOL1", 4) == 0) && 138 } else if (info->format == DASD_FORMAT_CDL) {
119 (!info->FBA_layout) && (!strcmp(info->type, "ECKD"))) {
120 /* 139 /*
121 * New style VOL1 labeled disk 140 * New style CDL formatted disk
122 */ 141 */
123 unsigned int blk; 142 unsigned int blk;
124 int counter; 143 int counter;
125 144
126 printk("VOL1/%8s:", name);
127
128 /* get block number and read then go through format1 labels */
129 blk = cchhb2blk(&label->vol.vtoc, geo) + 1;
130 counter = 0;
131 while ((data = read_dev_sector(bdev, blk*(blocksize/512),
132 &sect)) != NULL) {
133 struct vtoc_format1_label f1;
134
135 memcpy(&f1, data, sizeof(struct vtoc_format1_label));
136 put_dev_sector(sect);
137
138 /* skip FMT4 / FMT5 / FMT7 labels */
139 if (f1.DS1FMTID == _ascebc['4']
140 || f1.DS1FMTID == _ascebc['5']
141 || f1.DS1FMTID == _ascebc['7']) {
142 blk++;
143 continue;
144 }
145
146 /* only FMT1 valid at this point */
147 if (f1.DS1FMTID != _ascebc['1'])
148 break;
149
150 /* OK, we got valid partition data */
151 offset = cchh2blk(&f1.DS1EXT1.llimit, geo);
152 size = cchh2blk(&f1.DS1EXT1.ulimit, geo) -
153 offset + geo->sectors;
154 if (counter >= state->limit)
155 break;
156 put_partition(state, counter + 1,
157 offset * (blocksize >> 9),
158 size * (blocksize >> 9));
159 counter++;
160 blk++;
161 }
162 if (!data)
163 /* Are we not supposed to report this ? */
164 goto out_readerr;
165 } else {
166 /* 145 /*
167 * Old style LNX1 or unlabeled disk 146 * check if VOL1 label is available
147 * if not, something is wrong, skipping partition detection
168 */ 148 */
169 if (strncmp(type, "LNX1", 4) == 0) 149 if (strncmp(type, "VOL1", 4) == 0) {
170 printk ("LNX1/%8s:", name); 150 printk("VOL1/%8s:", name);
171 else 151 /*
172 printk("(nonl)/%8s:", name); 152 * get block number and read then go through format1
173 offset = (info->label_block + 1); 153 * labels
174 size = i_size >> 9; 154 */
175 put_partition(state, 1, offset*(blocksize >> 9), 155 blk = cchhb2blk(&label->vol.vtoc, geo) + 1;
176 size-offset*(blocksize >> 9)); 156 counter = 0;
157 data = read_dev_sector(bdev, blk * (blocksize/512),
158 &sect);
159 while (data != NULL) {
160 struct vtoc_format1_label f1;
161
162 memcpy(&f1, data,
163 sizeof(struct vtoc_format1_label));
164 put_dev_sector(sect);
165
166 /* skip FMT4 / FMT5 / FMT7 labels */
167 if (f1.DS1FMTID == _ascebc['4']
168 || f1.DS1FMTID == _ascebc['5']
169 || f1.DS1FMTID == _ascebc['7']) {
170 blk++;
171 data = read_dev_sector(bdev, blk *
172 (blocksize/512),
173 &sect);
174 continue;
175 }
176
177 /* only FMT1 valid at this point */
178 if (f1.DS1FMTID != _ascebc['1'])
179 break;
180
181 /* OK, we got valid partition data */
182 offset = cchh2blk(&f1.DS1EXT1.llimit, geo);
183 size = cchh2blk(&f1.DS1EXT1.ulimit, geo) -
184 offset + geo->sectors;
185 if (counter >= state->limit)
186 break;
187 put_partition(state, counter + 1,
188 offset * (blocksize >> 9),
189 size * (blocksize >> 9));
190 counter++;
191 blk++;
192 data = read_dev_sector(bdev,
193 blk * (blocksize/512),
194 &sect);
195 }
196
197 if (!data)
198 /* Are we not supposed to report this ? */
199 goto out_readerr;
200 } else
201 printk(KERN_WARNING "Warning, expected Label VOL1 not "
202 "found, treating as CDL formated Disk");
203
177 } 204 }
178 205
179 printk("\n"); 206 printk("\n");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-21 15:32:29 -0500