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37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/version.h>
40 #include <linux/seq_file.h>
41 #include <asm/statfs.h>
42 #include <lprocfs_status.h>
43 #include <obd_class.h>
45 #include "lmv_internal.h"
47 #ifndef CONFIG_PROC_FS
48 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
49 static struct lprocfs_vars lprocfs_obd_vars[] = { {0} };
51 static int lmv_numobd_seq_show(struct seq_file *m, void *v)
53 struct obd_device *dev = (struct obd_device *)m->private;
54 struct lmv_desc *desc;
57 desc = &dev->u.lmv.desc;
58 seq_printf(m, "%u\n", desc->ld_tgt_count);
61 LPROC_SEQ_FOPS_RO(lmv_numobd);
63 static const char *placement_name[] = {
64 [PLACEMENT_CHAR_POLICY] = "CHAR",
65 [PLACEMENT_NID_POLICY] = "NID",
66 [PLACEMENT_INVAL_POLICY] = "INVAL"
69 static placement_policy_t placement_name2policy(char *name, int len)
73 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
74 if (!strncmp(placement_name[i], name, len))
77 return PLACEMENT_INVAL_POLICY;
80 static const char *placement_policy2name(placement_policy_t placement)
82 LASSERT(placement < PLACEMENT_MAX_POLICY);
83 return placement_name[placement];
86 static int lmv_placement_seq_show(struct seq_file *m, void *v)
88 struct obd_device *dev = (struct obd_device *)m->private;
93 seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement));
97 #define MAX_POLICY_STRING_SIZE 64
99 static ssize_t lmv_placement_seq_write(struct file *file,
100 const char __user *buffer,
101 size_t count, loff_t *off)
103 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
104 char dummy[MAX_POLICY_STRING_SIZE + 1];
106 placement_policy_t policy;
109 if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
112 LASSERT(dev != NULL);
115 if (len > MAX_POLICY_STRING_SIZE)
116 len = MAX_POLICY_STRING_SIZE;
118 if (dummy[len - 1] == '\n')
122 policy = placement_name2policy(dummy, len);
123 if (policy != PLACEMENT_INVAL_POLICY) {
124 spin_lock(&lmv->lmv_lock);
125 lmv->lmv_placement = policy;
126 spin_unlock(&lmv->lmv_lock);
128 CERROR("Invalid placement policy \"%s\"!\n", dummy);
133 LPROC_SEQ_FOPS(lmv_placement);
135 static int lmv_activeobd_seq_show(struct seq_file *m, void *v)
137 struct obd_device *dev = (struct obd_device *)m->private;
138 struct lmv_desc *desc;
140 LASSERT(dev != NULL);
141 desc = &dev->u.lmv.desc;
142 seq_printf(m, "%u\n", desc->ld_active_tgt_count);
145 LPROC_SEQ_FOPS_RO(lmv_activeobd);
147 static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
149 struct obd_device *dev = (struct obd_device*)m->private;
152 LASSERT(dev != NULL);
154 seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
157 LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
159 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
161 struct obd_device *dev = p->private;
162 struct lmv_obd *lmv = &dev->u.lmv;
164 while (*pos < lmv->tgts_size) {
165 if (lmv->tgts[*pos] != NULL)
166 return lmv->tgts[*pos];
174 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
179 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
181 struct obd_device *dev = p->private;
182 struct lmv_obd *lmv = &dev->u.lmv;
185 while (*pos < lmv->tgts_size) {
186 if (lmv->tgts[*pos] != NULL)
187 return lmv->tgts[*pos];
195 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
197 struct lmv_tgt_desc *tgt = v;
201 seq_printf(p, "%u: %s %sACTIVE\n", tgt->ltd_idx,
202 tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN");
206 static const struct seq_operations lmv_tgt_sops = {
207 .start = lmv_tgt_seq_start,
208 .stop = lmv_tgt_seq_stop,
209 .next = lmv_tgt_seq_next,
210 .show = lmv_tgt_seq_show,
213 static int lmv_target_seq_open(struct inode *inode, struct file *file)
215 struct seq_file *seq;
218 rc = seq_open(file, &lmv_tgt_sops);
222 seq = file->private_data;
223 seq->private = PDE_DATA(inode);
227 LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
229 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
231 .fops = &lmv_numobd_fops },
232 { .name = "placement",
233 .fops = &lmv_placement_fops },
234 { .name = "activeobd",
235 .fops = &lmv_activeobd_fops },
237 .fops = &lmv_uuid_fops },
238 { .name = "desc_uuid",
239 .fops = &lmv_desc_uuid_fops },
243 struct file_operations lmv_proc_target_fops = {
244 .owner = THIS_MODULE,
245 .open = lmv_target_seq_open,
248 .release = seq_release,
250 #endif /* CONFIG_PROC_FS */