// SPDX-License-Identifier: GPL-2.0-or-later/* /proc interface for AFS * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #include <linux/slab.h>#include <linux/module.h>#include <linux/proc_fs.h>#include <linux/seq_file.h>#include <linux/sched.h>#include <linux/uaccess.h>#include "internal.h" struct afs_vl_seq_net_private { struct seq_net_private seq; /* Must be first */ struct afs_vlserver_list *vllist;}; static inline struct afs_net *afs_seq2net(struct seq_file *m){ return afs_net(seq_file_net(m));} static inline struct afs_net *afs_seq2net_single(struct seq_file *m){ return afs_net(seq_file_single_net(m));} /* * Display the list of cells known to the namespace. */static int afs_proc_cells_show(struct seq_file *m, void *v){ struct afs_vlserver_list *vllist; struct afs_cell *cell; if (v == SEQ_START_TOKEN) { /* display header on line 1 */ seq_puts(m, "USE ACT TTL SV ST NAME\n"); return 0; } cell = list_entry(v, struct afs_cell, proc_link); vllist = rcu_dereference(cell->vl_servers); /* display one cell per line on subsequent lines */ seq_printf(m, "%3u %3u %6lld %2u %2u %s\n", refcount_read(&cell->ref), atomic_read(&cell->active), cell->dns_expiry - ktime_get_real_seconds(), vllist ? vllist->nr_servers : 0, cell->state, cell->name); return 0;} static void *afs_proc_cells_start(struct seq_file *m, loff_t *_pos) __acquires(rcu){ rcu_read_lock(); return seq_hlist_start_head_rcu(&afs_seq2net(m)->proc_cells, *_pos);} static void *afs_proc_cells_next(struct seq_file *m, void *v, loff_t *pos){ return seq_hlist_next_rcu(v, &afs_seq2net(m)->proc_cells, pos);} static void afs_proc_cells_stop(struct seq_file *m, void *v) __releases(rcu){ rcu_read_unlock();} static const struct seq_operations afs_proc_cells_ops = { .start = afs_proc_cells_start, .next = afs_proc_cells_next, .stop = afs_proc_cells_stop, .show = afs_proc_cells_show,}; /* * handle writes to /proc/fs/afs/cells * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]" */static int afs_proc_cells_write(struct file *file, char *buf, size_t size){ struct seq_file *m = file->private_data; struct afs_net *net = afs_seq2net(m); char *name, *args; int ret; /* trim to first NL */ name = memchr(buf, '\n', size); if (name) *name = 0; /* split into command, name and argslist */ name = strchr(buf, ' '); if (!name) goto inval; do { *name++ = 0; } while(*name == ' '); if (!*name) goto inval; args = strchr(name, ' '); if (args) { do { *args++ = 0; } while(*args == ' '); if (!*args) goto inval; } /* determine command to perform */ _debug("cmd=%s name=%s args=%s", buf, name, args); if (strcmp(buf, "add") == 0) { struct afs_cell *cell; cell = afs_lookup_cell(net, name, strlen(name), args, AFS_LOOKUP_CELL_PRELOAD, afs_cell_trace_use_lookup_add); if (IS_ERR(cell)) { ret = PTR_ERR(cell); goto done; } if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags)) afs_unuse_cell(cell, afs_cell_trace_unuse_no_pin); } else { goto inval; } ret = 0; done: _leave(" = %d", ret); return ret; inval: ret = -EINVAL; printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n"); goto done;} /* * Display the list of addr_prefs known to the namespace. */static int afs_proc_addr_prefs_show(struct seq_file *m, void *v){ struct afs_addr_preference_list *preflist; struct afs_addr_preference *pref; struct afs_net *net = afs_seq2net_single(m); union { struct sockaddr_in sin; struct sockaddr_in6 sin6; } addr; unsigned int i; char buf[44]; /* Maximum ipv6 + max subnet is 43 */ rcu_read_lock(); preflist = rcu_dereference(net->address_prefs); if (!preflist) { seq_puts(m, "NO PREFS\n"); goto out; } seq_printf(m, "PROT SUBNET PRIOR (v=%u n=%u/%u/%u)\n", preflist->version, preflist->ipv6_off, preflist->nr, preflist->max_prefs); memset(&addr, 0, sizeof(addr)); for (i = 0; i < preflist->nr; i++) { pref = &preflist->prefs[i]; addr.sin.sin_family = pref->family; if (pref->family == AF_INET) { memcpy(&addr.sin.sin_addr, &pref->ipv4_addr, sizeof(addr.sin.sin_addr)); snprintf(buf, sizeof(buf), "%pISc/%u", &addr.sin, pref->subnet_mask); seq_printf(m, "UDP %-43.43s %5u\n", buf, pref->prio); } else { memcpy(&addr.sin6.sin6_addr, &pref->ipv6_addr, sizeof(addr.sin6.sin6_addr)); snprintf(buf, sizeof(buf), "%pISc/%u", &addr.sin6, pref->subnet_mask); seq_printf(m, "UDP %-43.43s %5u\n", buf, pref->prio); } } out: rcu_read_unlock(); return 0;} /* * Display the name of the current workstation cell. */static int afs_proc_rootcell_show(struct seq_file *m, void *v){ struct afs_cell *cell; struct afs_net *net; net = afs_seq2net_single(m); down_read(&net->cells_lock); cell = rcu_dereference_protected(net->ws_cell, lockdep_is_held(&net->cells_lock)); if (cell) seq_printf(m, "%s\n", cell->name); up_read(&net->cells_lock); return 0;} /* * Set the current workstation cell and optionally supply its list of volume * location servers. * * echo "cell.name:192.168.231.14" >/proc/fs/afs/rootcell */static int afs_proc_rootcell_write(struct file *file, char *buf, size_t size){ struct seq_file *m = file->private_data; struct afs_net *net = afs_seq2net_single(m); char *s; int ret; ret = -EINVAL; if (buf[0] == '.') goto out; if (memchr(buf, '/', size)) goto out; /* trim to first NL */ s = memchr(buf, '\n', size); if (s) *s = 0; /* determine command to perform */ _debug("rootcell=%s", buf); ret = -EEXIST; inode_lock(file_inode(file)); if (!rcu_access_pointer(net->ws_cell)) ret = afs_cell_init(net, buf); else printk("busy\n"); inode_unlock(file_inode(file)); out: _leave(" = %d", ret); return ret;} static const char afs_vol_types[3][3] = { [AFSVL_RWVOL] = "RW", [AFSVL_ROVOL] = "RO", [AFSVL_BACKVOL] = "BK",}; /* * Display the list of volumes known to a cell. */static int afs_proc_cell_volumes_show(struct seq_file *m, void *v){ struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link); /* Display header on line 1 */ if (v == SEQ_START_TOKEN) { seq_puts(m, "USE VID TY NAME\n"); return 0; } seq_printf(m, "%3d %08llx %s %s\n", refcount_read(&vol->ref), vol->vid, afs_vol_types[vol->type], vol->name); return 0;} static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos) __acquires(cell->proc_lock){ struct afs_cell *cell = pde_data(file_inode(m->file)); rcu_read_lock(); return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);} static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v, loff_t *_pos){ struct afs_cell *cell = pde_data(file_inode(m->file)); return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);} static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v) __releases(cell->proc_lock){ rcu_read_unlock();} static const struct seq_operations afs_proc_cell_volumes_ops = { .start = afs_proc_cell_volumes_start, .next = afs_proc_cell_volumes_next, .stop = afs_proc_cell_volumes_stop, .show = afs_proc_cell_volumes_show,}; static const char *const dns_record_sources[NR__dns_record_source + 1] = { [DNS_RECORD_UNAVAILABLE] = "unav", [DNS_RECORD_FROM_CONFIG] = "cfg", [DNS_RECORD_FROM_DNS_A] = "A", [DNS_RECORD_FROM_DNS_AFSDB] = "AFSDB", [DNS_RECORD_FROM_DNS_SRV] = "SRV", [DNS_RECORD_FROM_NSS] = "nss", [NR__dns_record_source] = "[weird]"}; static const char *const dns_lookup_statuses[NR__dns_lookup_status + 1] = { [DNS_LOOKUP_NOT_DONE] = "no-lookup", [DNS_LOOKUP_GOOD] = "good", [DNS_LOOKUP_GOOD_WITH_BAD] = "good/bad", [DNS_LOOKUP_BAD] = "bad", [DNS_LOOKUP_GOT_NOT_FOUND] = "not-found", [DNS_LOOKUP_GOT_LOCAL_FAILURE] = "local-failure", [DNS_LOOKUP_GOT_TEMP_FAILURE] = "temp-failure", [DNS_LOOKUP_GOT_NS_FAILURE] = "ns-failure", [NR__dns_lookup_status] = "[weird]"}; /* * Display the list of Volume Location servers we're using for a cell. */static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v){ const struct afs_vl_seq_net_private *priv = m->private; const struct afs_vlserver_list *vllist = priv->vllist; const struct afs_vlserver_entry *entry; const struct afs_vlserver *vlserver; const struct afs_addr_list *alist; int i; if (v == SEQ_START_TOKEN) { seq_printf(m, "# source %s, status %s\n", dns_record_sources[vllist ? vllist->source : 0], dns_lookup_statuses[vllist ? vllist->status : 0]); return 0; } entry = v; vlserver = entry->server; alist = rcu_dereference(vlserver->addresses); seq_printf(m, "%s [p=%hu w=%hu s=%s,%s]:\n", vlserver->name, entry->priority, entry->weight, dns_record_sources[alist ? alist->source : entry->source], dns_lookup_statuses[alist ? alist->status : entry->status]); if (alist) { for (i = 0; i < alist->nr_addrs; i++) seq_printf(m, " %c %pISpc\n", alist->preferred == i ? '>' : '-', rxrpc_kernel_remote_addr(alist->addrs[i].peer)); } seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt); seq_printf(m, " probe: fl=%x e=%d ac=%d out=%d\n", vlserver->probe.flags, vlserver->probe.error, vlserver->probe.abort_code, atomic_read(&vlserver->probe_outstanding)); return 0;} static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos) __acquires(rcu){ struct afs_vl_seq_net_private *priv = m->private; struct afs_vlserver_list *vllist; struct afs_cell *cell = pde_data(file_inode(m->file)); loff_t pos = *_pos; rcu_read_lock(); vllist = rcu_dereference(cell->vl_servers); priv->vllist = vllist; if (pos < 0) *_pos = pos = 0; if (pos == 0) return SEQ_START_TOKEN; if (pos - 1 >= vllist->nr_servers) return NULL; return &vllist->servers[pos - 1];} static void *afs_proc_cell_vlservers_next(struct seq_file *m, void *v, loff_t *_pos){ struct afs_vl_seq_net_private *priv = m->private; struct afs_vlserver_list *vllist = priv->vllist; loff_t pos; pos = *_pos; pos++; *_pos = pos; if (!vllist || pos - 1 >= vllist->nr_servers) return NULL; return &vllist->servers[pos - 1];} static void afs_proc_cell_vlservers_stop(struct seq_file *m, void *v) __releases(rcu){ rcu_read_unlock();} static const struct seq_operations afs_proc_cell_vlservers_ops = { .start = afs_proc_cell_vlservers_start, .next = afs_proc_cell_vlservers_next, .stop = afs_proc_cell_vlservers_stop, .show = afs_proc_cell_vlservers_show,}; /* * Display the list of fileservers we're using within a namespace. */static int afs_proc_servers_show(struct seq_file *m, void *v){ struct afs_endpoint_state *estate; struct afs_addr_list *alist; struct afs_server *server; unsigned long failed; int i; if (v == SEQ_START_TOKEN) { seq_puts(m, "UUID REF ACT CELL\n"); return 0; } server = list_entry(v, struct afs_server, proc_link); seq_printf(m, "%pU %3d %3d %s\n", &server->uuid, refcount_read(&server->ref), atomic_read(&server->active), server->cell->name); seq_printf(m, " - info: fl=%lx rtt=%u\n", server->flags, server->rtt); seq_printf(m, " - probe: last=%d\n", (int)(jiffies - server->probed_at) / HZ); estate = rcu_dereference(server->endpoint_state); if (!estate) goto out; failed = estate->failed_set; seq_printf(m, " - ESTATE pq=%x np=%u rsp=%lx f=%lx\n", estate->probe_seq, atomic_read(&estate->nr_probing), estate->responsive_set, estate->failed_set); alist = estate->addresses; seq_printf(m, " - ALIST v=%u ap=%u\n", alist->version, alist->addr_pref_version); for (i = 0; i < alist->nr_addrs; i++) { const struct afs_address *addr = &alist->addrs[i]; seq_printf(m, " [%x] %pISpc%s rtt=%d err=%d p=%u\n", i, rxrpc_kernel_remote_addr(addr->peer), alist->preferred == i ? "*" : test_bit(i, &failed) ? "!" : "", rxrpc_kernel_get_srtt(addr->peer), addr->last_error, addr->prio); } out: return 0;} static void *afs_proc_servers_start(struct seq_file *m, loff_t *_pos) __acquires(rcu){ rcu_read_lock(); return seq_hlist_start_head_rcu(&afs_seq2net(m)->fs_proc, *_pos);} static void *afs_proc_servers_next(struct seq_file *m, void *v, loff_t *_pos){ return seq_hlist_next_rcu(v, &afs_seq2net(m)->fs_proc, _pos);} static void afs_proc_servers_stop(struct seq_file *m, void *v) __releases(rcu){ rcu_read_unlock();}Lines 1–500 of 786. Load more
// SPDX-License-Identifier: GPL-2.0-or-later /* /proc interface for AFS * * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #include <linux/slab.h> #include <linux/module.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/sched.h> #include <linux/uaccess.h> #include "internal.h" struct afs_vl_seq_net_private { struct seq_net_private seq; /* Must be first */ struct afs_vlserver_list *vllist; }; static inline struct afs_net *afs_seq2net(struct seq_file *m) { return afs_net(seq_file_net(m)); } static inline struct afs_net *afs_seq2net_single(struct seq_file *m) { return afs_net(seq_file_single_net(m)); } /* * Display the list of cells known to the namespace. */ static int afs_proc_cells_show(struct seq_file *m, void *v) { struct afs_vlserver_list *vllist; struct afs_cell *cell; if (v == SEQ_START_TOKEN) { /* display header on line 1 */ seq_puts(m, "USE ACT TTL SV ST NAME\n"); return 0; } cell = list_entry(v, struct afs_cell, proc_link); vllist = rcu_dereference(cell->vl_servers); /* display one cell per line on subsequent lines */ seq_printf(m, "%3u %3u %6lld %2u %2u %s\n", refcount_read(&cell->ref), atomic_read(&cell->active), cell->dns_expiry - ktime_get_real_seconds(), vllist ? vllist->nr_servers : 0, cell->state, cell->name); return 0; } static void *afs_proc_cells_start(struct seq_file *m, loff_t *_pos) __acquires(rcu) { rcu_read_lock(); return seq_hlist_start_head_rcu(&afs_seq2net(m)->proc_cells, *_pos); } static void *afs_proc_cells_next(struct seq_file *m, void *v, loff_t *pos) { return seq_hlist_next_rcu(v, &afs_seq2net(m)->proc_cells, pos); } static void afs_proc_cells_stop(struct seq_file *m, void *v) __releases(rcu) { rcu_read_unlock(); } static const struct seq_operations afs_proc_cells_ops = { .start = afs_proc_cells_start, .next = afs_proc_cells_next, .stop = afs_proc_cells_stop, .show = afs_proc_cells_show, }; /* * handle writes to /proc/fs/afs/cells * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]" */ static int afs_proc_cells_write(struct file *file, char *buf, size_t size) { struct seq_file *m = file->private_data; struct afs_net *net = afs_seq2net(m); char *name, *args; int ret; /* trim to first NL */ name = memchr(buf, '\n', size); if (name) *name = 0; /* split into command, name and argslist */ name = strchr(buf, ' '); if (!name) goto inval; do { *name++ = 0; } while(*name == ' '); if (!*name) goto inval; args = strchr(name, ' '); if (args) { do { *args++ = 0; } while(*args == ' '); if (!*args) goto inval; } /* determine command to perform */ _debug("cmd=%s name=%s args=%s", buf, name, args); if (strcmp(buf, "add") == 0) { struct afs_cell *cell; cell = afs_lookup_cell(net, name, strlen(name), args, AFS_LOOKUP_CELL_PRELOAD, afs_cell_trace_use_lookup_add); if (IS_ERR(cell)) { ret = PTR_ERR(cell); goto done; } if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags)) afs_unuse_cell(cell, afs_cell_trace_unuse_no_pin); } else { goto inval; } ret = 0; done: _leave(" = %d", ret); return ret; inval: ret = -EINVAL; printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n"); goto done; } /* * Display the list of addr_prefs known to the namespace. */ static int afs_proc_addr_prefs_show(struct seq_file *m, void *v) { struct afs_addr_preference_list *preflist; struct afs_addr_preference *pref; struct afs_net *net = afs_seq2net_single(m); union { struct sockaddr_in sin; struct sockaddr_in6 sin6; } addr; unsigned int i; char buf[44]; /* Maximum ipv6 + max subnet is 43 */ rcu_read_lock(); preflist = rcu_dereference(net->address_prefs); if (!preflist) { seq_puts(m, "NO PREFS\n"); goto out; } seq_printf(m, "PROT SUBNET PRIOR (v=%u n=%u/%u/%u)\n", preflist->version, preflist->ipv6_off, preflist->nr, preflist->max_prefs); memset(&addr, 0, sizeof(addr)); for (i = 0; i < preflist->nr; i++) { pref = &preflist->prefs[i]; addr.sin.sin_family = pref->family; if (pref->family == AF_INET) { memcpy(&addr.sin.sin_addr, &pref->ipv4_addr, sizeof(addr.sin.sin_addr)); snprintf(buf, sizeof(buf), "%pISc/%u", &addr.sin, pref->subnet_mask); seq_printf(m, "UDP %-43.43s %5u\n", buf, pref->prio); } else { memcpy(&addr.sin6.sin6_addr, &pref->ipv6_addr, sizeof(addr.sin6.sin6_addr)); snprintf(buf, sizeof(buf), "%pISc/%u", &addr.sin6, pref->subnet_mask); seq_printf(m, "UDP %-43.43s %5u\n", buf, pref->prio); } } out: rcu_read_unlock(); return 0; } /* * Display the name of the current workstation cell. */ static int afs_proc_rootcell_show(struct seq_file *m, void *v) { struct afs_cell *cell; struct afs_net *net; net = afs_seq2net_single(m); down_read(&net->cells_lock); cell = rcu_dereference_protected(net->ws_cell, lockdep_is_held(&net->cells_lock)); if (cell) seq_printf(m, "%s\n", cell->name); up_read(&net->cells_lock); return 0; } /* * Set the current workstation cell and optionally supply its list of volume * location servers. * * echo "cell.name:192.168.231.14" >/proc/fs/afs/rootcell */ static int afs_proc_rootcell_write(struct file *file, char *buf, size_t size) { struct seq_file *m = file->private_data; struct afs_net *net = afs_seq2net_single(m); char *s; int ret; ret = -EINVAL; if (buf[0] == '.') goto out; if (memchr(buf, '/', size)) goto out; /* trim to first NL */ s = memchr(buf, '\n', size); if (s) *s = 0; /* determine command to perform */ _debug("rootcell=%s", buf); ret = -EEXIST; inode_lock(file_inode(file)); if (!rcu_access_pointer(net->ws_cell)) ret = afs_cell_init(net, buf); else printk("busy\n"); inode_unlock(file_inode(file)); out: _leave(" = %d", ret); return ret; } static const char afs_vol_types[3][3] = { [AFSVL_RWVOL] = "RW", [AFSVL_ROVOL] = "RO", [AFSVL_BACKVOL] = "BK", }; /* * Display the list of volumes known to a cell. */ static int afs_proc_cell_volumes_show(struct seq_file *m, void *v) { struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link); /* Display header on line 1 */ if (v == SEQ_START_TOKEN) { seq_puts(m, "USE VID TY NAME\n"); return 0; } seq_printf(m, "%3d %08llx %s %s\n", refcount_read(&vol->ref), vol->vid, afs_vol_types[vol->type], vol->name); return 0; } static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos) __acquires(cell->proc_lock) { struct afs_cell *cell = pde_data(file_inode(m->file)); rcu_read_lock(); return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos); } static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v, loff_t *_pos) { struct afs_cell *cell = pde_data(file_inode(m->file)); return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos); } static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v) __releases(cell->proc_lock) { rcu_read_unlock(); } static const struct seq_operations afs_proc_cell_volumes_ops = { .start = afs_proc_cell_volumes_start, .next = afs_proc_cell_volumes_next, .stop = afs_proc_cell_volumes_stop, .show = afs_proc_cell_volumes_show, }; static const char *const dns_record_sources[NR__dns_record_source + 1] = { [DNS_RECORD_UNAVAILABLE] = "unav", [DNS_RECORD_FROM_CONFIG] = "cfg", [DNS_RECORD_FROM_DNS_A] = "A", [DNS_RECORD_FROM_DNS_AFSDB] = "AFSDB", [DNS_RECORD_FROM_DNS_SRV] = "SRV", [DNS_RECORD_FROM_NSS] = "nss", [NR__dns_record_source] = "[weird]" }; static const char *const dns_lookup_statuses[NR__dns_lookup_status + 1] = { [DNS_LOOKUP_NOT_DONE] = "no-lookup", [DNS_LOOKUP_GOOD] = "good", [DNS_LOOKUP_GOOD_WITH_BAD] = "good/bad", [DNS_LOOKUP_BAD] = "bad", [DNS_LOOKUP_GOT_NOT_FOUND] = "not-found", [DNS_LOOKUP_GOT_LOCAL_FAILURE] = "local-failure", [DNS_LOOKUP_GOT_TEMP_FAILURE] = "temp-failure", [DNS_LOOKUP_GOT_NS_FAILURE] = "ns-failure", [NR__dns_lookup_status] = "[weird]" }; /* * Display the list of Volume Location servers we're using for a cell. */ static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v) { const struct afs_vl_seq_net_private *priv = m->private; const struct afs_vlserver_list *vllist = priv->vllist; const struct afs_vlserver_entry *entry; const struct afs_vlserver *vlserver; const struct afs_addr_list *alist; int i; if (v == SEQ_START_TOKEN) { seq_printf(m, "# source %s, status %s\n", dns_record_sources[vllist ? vllist->source : 0], dns_lookup_statuses[vllist ? vllist->status : 0]); return 0; } entry = v; vlserver = entry->server; alist = rcu_dereference(vlserver->addresses); seq_printf(m, "%s [p=%hu w=%hu s=%s,%s]:\n", vlserver->name, entry->priority, entry->weight, dns_record_sources[alist ? alist->source : entry->source], dns_lookup_statuses[alist ? alist->status : entry->status]); if (alist) { for (i = 0; i < alist->nr_addrs; i++) seq_printf(m, " %c %pISpc\n", alist->preferred == i ? '>' : '-', rxrpc_kernel_remote_addr(alist->addrs[i].peer)); } seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt); seq_printf(m, " probe: fl=%x e=%d ac=%d out=%d\n", vlserver->probe.flags, vlserver->probe.error, vlserver->probe.abort_code, atomic_read(&vlserver->probe_outstanding)); return 0; } static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos) __acquires(rcu) { struct afs_vl_seq_net_private *priv = m->private; struct afs_vlserver_list *vllist; struct afs_cell *cell = pde_data(file_inode(m->file)); loff_t pos = *_pos; rcu_read_lock(); vllist = rcu_dereference(cell->vl_servers); priv->vllist = vllist; if (pos < 0) *_pos = pos = 0; if (pos == 0) return SEQ_START_TOKEN; if (pos - 1 >= vllist->nr_servers) return NULL; return &vllist->servers[pos - 1]; } static void *afs_proc_cell_vlservers_next(struct seq_file *m, void *v, loff_t *_pos) { struct afs_vl_seq_net_private *priv = m->private; struct afs_vlserver_list *vllist = priv->vllist; loff_t pos; pos = *_pos; pos++; *_pos = pos; if (!vllist || pos - 1 >= vllist->nr_servers) return NULL; return &vllist->servers[pos - 1]; } static void afs_proc_cell_vlservers_stop(struct seq_file *m, void *v) __releases(rcu) { rcu_read_unlock(); } static const struct seq_operations afs_proc_cell_vlservers_ops = { .start = afs_proc_cell_vlservers_start, .next = afs_proc_cell_vlservers_next, .stop = afs_proc_cell_vlservers_stop, .show = afs_proc_cell_vlservers_show, }; /* * Display the list of fileservers we're using within a namespace. */ static int afs_proc_servers_show(struct seq_file *m, void *v) { struct afs_endpoint_state *estate; struct afs_addr_list *alist; struct afs_server *server; unsigned long failed; int i; if (v == SEQ_START_TOKEN) { seq_puts(m, "UUID REF ACT CELL\n"); return 0; } server = list_entry(v, struct afs_server, proc_link); seq_printf(m, "%pU %3d %3d %s\n", &server->uuid, refcount_read(&server->ref), atomic_read(&server->active), server->cell->name); seq_printf(m, " - info: fl=%lx rtt=%u\n", server->flags, server->rtt); seq_printf(m, " - probe: last=%d\n", (int)(jiffies - server->probed_at) / HZ); estate = rcu_dereference(server->endpoint_state); if (!estate) goto out; failed = estate->failed_set; seq_printf(m, " - ESTATE pq=%x np=%u rsp=%lx f=%lx\n", estate->probe_seq, atomic_read(&estate->nr_probing), estate->responsive_set, estate->failed_set); alist = estate->addresses; seq_printf(m, " - ALIST v=%u ap=%u\n", alist->version, alist->addr_pref_version); for (i = 0; i < alist->nr_addrs; i++) { const struct afs_address *addr = &alist->addrs[i]; seq_printf(m, " [%x] %pISpc%s rtt=%d err=%d p=%u\n", i, rxrpc_kernel_remote_addr(addr->peer), alist->preferred == i ? "*" : test_bit(i, &failed) ? "!" : "", rxrpc_kernel_get_srtt(addr->peer), addr->last_error, addr->prio); } out: return 0; } static void *afs_proc_servers_start(struct seq_file *m, loff_t *_pos) __acquires(rcu) { rcu_read_lock(); return seq_hlist_start_head_rcu(&afs_seq2net(m)->fs_proc, *_pos); } static void *afs_proc_servers_next(struct seq_file *m, void *v, loff_t *_pos) { return seq_hlist_next_rcu(v, &afs_seq2net(m)->fs_proc, _pos); } static void afs_proc_servers_stop(struct seq_file *m, void *v) __releases(rcu) { rcu_read_unlock(); }