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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 return seq_printf(m, "%u\n", desc->ld_tgt_count);
60 LPROC_SEQ_FOPS_RO(lmv_numobd);
62 static const char *placement_name[] = {
63 [PLACEMENT_CHAR_POLICY] = "CHAR",
64 [PLACEMENT_NID_POLICY] = "NID",
65 [PLACEMENT_INVAL_POLICY] = "INVAL"
68 static placement_policy_t placement_name2policy(char *name, int len)
72 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
73 if (!strncmp(placement_name[i], name, len))
76 return PLACEMENT_INVAL_POLICY;
79 static const char *placement_policy2name(placement_policy_t placement)
81 LASSERT(placement < PLACEMENT_MAX_POLICY);
82 return placement_name[placement];
85 static int lmv_placement_seq_show(struct seq_file *m, void *v)
87 struct obd_device *dev = (struct obd_device *)m->private;
92 return seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement));
95 #define MAX_POLICY_STRING_SIZE 64
97 static ssize_t lmv_placement_seq_write(struct file *file,
98 const char __user *buffer,
99 size_t count, loff_t *off)
101 struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
102 char dummy[MAX_POLICY_STRING_SIZE + 1];
104 placement_policy_t policy;
107 if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE))
110 LASSERT(dev != NULL);
113 if (len > MAX_POLICY_STRING_SIZE)
114 len = MAX_POLICY_STRING_SIZE;
116 if (dummy[len - 1] == '\n')
120 policy = placement_name2policy(dummy, len);
121 if (policy != PLACEMENT_INVAL_POLICY) {
122 spin_lock(&lmv->lmv_lock);
123 lmv->lmv_placement = policy;
124 spin_unlock(&lmv->lmv_lock);
126 CERROR("Invalid placement policy \"%s\"!\n", dummy);
131 LPROC_SEQ_FOPS(lmv_placement);
133 static int lmv_activeobd_seq_show(struct seq_file *m, void *v)
135 struct obd_device *dev = (struct obd_device *)m->private;
136 struct lmv_desc *desc;
138 LASSERT(dev != NULL);
139 desc = &dev->u.lmv.desc;
140 return seq_printf(m, "%u\n", desc->ld_active_tgt_count);
142 LPROC_SEQ_FOPS_RO(lmv_activeobd);
144 static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
146 struct obd_device *dev = (struct obd_device*)m->private;
149 LASSERT(dev != NULL);
151 return seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
153 LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
155 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
157 struct obd_device *dev = p->private;
158 struct lmv_obd *lmv = &dev->u.lmv;
159 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
162 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
167 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
169 struct obd_device *dev = p->private;
170 struct lmv_obd *lmv = &dev->u.lmv;
172 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
175 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
177 struct lmv_tgt_desc *tgt = v;
181 return seq_printf(p, "%u: %s %sACTIVE\n", tgt->ltd_idx,
182 tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN");
185 static const struct seq_operations lmv_tgt_sops = {
186 .start = lmv_tgt_seq_start,
187 .stop = lmv_tgt_seq_stop,
188 .next = lmv_tgt_seq_next,
189 .show = lmv_tgt_seq_show,
192 static int lmv_target_seq_open(struct inode *inode, struct file *file)
194 struct seq_file *seq;
197 rc = seq_open(file, &lmv_tgt_sops);
201 seq = file->private_data;
202 seq->private = PDE_DATA(inode);
206 LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
208 struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
210 .fops = &lmv_numobd_fops },
211 { .name = "placement",
212 .fops = &lmv_placement_fops },
213 { .name = "activeobd",
214 .fops = &lmv_activeobd_fops },
216 .fops = &lmv_uuid_fops },
217 { .name = "desc_uuid",
218 .fops = &lmv_desc_uuid_fops },
222 struct file_operations lmv_proc_target_fops = {
223 .owner = THIS_MODULE,
224 .open = lmv_target_seq_open,
227 .release = seq_release,
229 #endif /* CONFIG_PROC_FS */