^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* /proc interface for AFS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Written by David Howells (dhowells@redhat.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) struct afs_vl_seq_net_private {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) struct seq_net_private seq; /* Must be first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) struct afs_vlserver_list *vllist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static inline struct afs_net *afs_seq2net(struct seq_file *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) return afs_net(seq_file_net(m));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) static inline struct afs_net *afs_seq2net_single(struct seq_file *m)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) return afs_net(seq_file_single_net(m));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * Display the list of cells known to the namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) static int afs_proc_cells_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) struct afs_vlserver_list *vllist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct afs_cell *cell;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) if (v == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* display header on line 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) seq_puts(m, "USE ACT TTL SV ST NAME\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) cell = list_entry(v, struct afs_cell, proc_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) vllist = rcu_dereference(cell->vl_servers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* display one cell per line on subsequent lines */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) seq_printf(m, "%3u %3u %6lld %2u %2u %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) atomic_read(&cell->ref),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) atomic_read(&cell->active),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) cell->dns_expiry - ktime_get_real_seconds(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) vllist ? vllist->nr_servers : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) cell->state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) cell->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static void *afs_proc_cells_start(struct seq_file *m, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) __acquires(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return seq_hlist_start_head_rcu(&afs_seq2net(m)->proc_cells, *_pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static void *afs_proc_cells_next(struct seq_file *m, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return seq_hlist_next_rcu(v, &afs_seq2net(m)->proc_cells, pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static void afs_proc_cells_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) __releases(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static const struct seq_operations afs_proc_cells_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) .start = afs_proc_cells_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .next = afs_proc_cells_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .stop = afs_proc_cells_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .show = afs_proc_cells_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * handle writes to /proc/fs/afs/cells
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * - to add cells: echo "add <cellname> <IP>[:<IP>][:<IP>]"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static int afs_proc_cells_write(struct file *file, char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) struct seq_file *m = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) struct afs_net *net = afs_seq2net(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) char *name, *args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* trim to first NL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) name = memchr(buf, '\n', size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) *name = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) /* split into command, name and argslist */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) name = strchr(buf, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (!name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) goto inval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *name++ = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } while(*name == ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (!*name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) goto inval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) args = strchr(name, ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) if (args) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) *args++ = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) } while(*args == ' ');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (!*args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) goto inval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* determine command to perform */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) _debug("cmd=%s name=%s args=%s", buf, name, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (strcmp(buf, "add") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) struct afs_cell *cell;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) cell = afs_lookup_cell(net, name, strlen(name), args, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (IS_ERR(cell)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) ret = PTR_ERR(cell);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) afs_unuse_cell(net, cell, afs_cell_trace_unuse_no_pin);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) goto inval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) _leave(" = %d", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) inval:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) printk("kAFS: Invalid Command on /proc/fs/afs/cells file\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * Display the name of the current workstation cell.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static int afs_proc_rootcell_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct afs_cell *cell;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct afs_net *net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) net = afs_seq2net_single(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) down_read(&net->cells_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) cell = net->ws_cell;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) if (cell)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) seq_printf(m, "%s\n", cell->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) up_read(&net->cells_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * Set the current workstation cell and optionally supply its list of volume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * location servers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * echo "cell.name:192.168.231.14" >/proc/fs/afs/rootcell
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) static int afs_proc_rootcell_write(struct file *file, char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct seq_file *m = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct afs_net *net = afs_seq2net_single(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) char *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (buf[0] == '.')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (memchr(buf, '/', size))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) /* trim to first NL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) s = memchr(buf, '\n', size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) *s = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /* determine command to perform */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) _debug("rootcell=%s", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) ret = afs_cell_init(net, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) _leave(" = %d", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static const char afs_vol_types[3][3] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) [AFSVL_RWVOL] = "RW",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) [AFSVL_ROVOL] = "RO",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) [AFSVL_BACKVOL] = "BK",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Display the list of volumes known to a cell.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) /* Display header on line 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) if (v == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) seq_puts(m, "USE VID TY NAME\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) seq_printf(m, "%3d %08llx %s %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) atomic_read(&vol->usage), vol->vid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) afs_vol_types[vol->type],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) vol->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) __acquires(cell->proc_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) struct afs_cell *cell = PDE_DATA(file_inode(m->file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) struct afs_cell *cell = PDE_DATA(file_inode(m->file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) __releases(cell->proc_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static const struct seq_operations afs_proc_cell_volumes_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) .start = afs_proc_cell_volumes_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) .next = afs_proc_cell_volumes_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) .stop = afs_proc_cell_volumes_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) .show = afs_proc_cell_volumes_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static const char *const dns_record_sources[NR__dns_record_source + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) [DNS_RECORD_UNAVAILABLE] = "unav",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) [DNS_RECORD_FROM_CONFIG] = "cfg",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) [DNS_RECORD_FROM_DNS_A] = "A",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) [DNS_RECORD_FROM_DNS_AFSDB] = "AFSDB",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) [DNS_RECORD_FROM_DNS_SRV] = "SRV",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) [DNS_RECORD_FROM_NSS] = "nss",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) [NR__dns_record_source] = "[weird]"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static const char *const dns_lookup_statuses[NR__dns_lookup_status + 1] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) [DNS_LOOKUP_NOT_DONE] = "no-lookup",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) [DNS_LOOKUP_GOOD] = "good",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) [DNS_LOOKUP_GOOD_WITH_BAD] = "good/bad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) [DNS_LOOKUP_BAD] = "bad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) [DNS_LOOKUP_GOT_NOT_FOUND] = "not-found",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) [DNS_LOOKUP_GOT_LOCAL_FAILURE] = "local-failure",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) [DNS_LOOKUP_GOT_TEMP_FAILURE] = "temp-failure",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) [DNS_LOOKUP_GOT_NS_FAILURE] = "ns-failure",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) [NR__dns_lookup_status] = "[weird]"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * Display the list of Volume Location servers we're using for a cell.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) const struct afs_vl_seq_net_private *priv = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) const struct afs_vlserver_list *vllist = priv->vllist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) const struct afs_vlserver_entry *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) const struct afs_vlserver *vlserver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) const struct afs_addr_list *alist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) if (v == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) seq_printf(m, "# source %s, status %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dns_record_sources[vllist ? vllist->source : 0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) dns_lookup_statuses[vllist ? vllist->status : 0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) entry = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) vlserver = entry->server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) alist = rcu_dereference(vlserver->addresses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) seq_printf(m, "%s [p=%hu w=%hu s=%s,%s]:\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) vlserver->name, entry->priority, entry->weight,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) dns_record_sources[alist ? alist->source : entry->source],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) dns_lookup_statuses[alist ? alist->status : entry->status]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (alist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) for (i = 0; i < alist->nr_addrs; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) seq_printf(m, " %c %pISpc\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) alist->preferred == i ? '>' : '-',
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) &alist->addrs[i].transport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) seq_printf(m, " probe: fl=%x e=%d ac=%d out=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) vlserver->probe.flags, vlserver->probe.error,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) vlserver->probe.abort_code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) atomic_read(&vlserver->probe_outstanding));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) __acquires(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) struct afs_vl_seq_net_private *priv = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct afs_vlserver_list *vllist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) struct afs_cell *cell = PDE_DATA(file_inode(m->file));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) loff_t pos = *_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) vllist = rcu_dereference(cell->vl_servers);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) priv->vllist = vllist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (pos < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) *_pos = pos = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) if (pos == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return SEQ_START_TOKEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) if (pos - 1 >= vllist->nr_servers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return &vllist->servers[pos - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) static void *afs_proc_cell_vlservers_next(struct seq_file *m, void *v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct afs_vl_seq_net_private *priv = m->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) struct afs_vlserver_list *vllist = priv->vllist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) loff_t pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) pos = *_pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) pos++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) *_pos = pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (!vllist || pos - 1 >= vllist->nr_servers)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) return &vllist->servers[pos - 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static void afs_proc_cell_vlservers_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) __releases(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) static const struct seq_operations afs_proc_cell_vlservers_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) .start = afs_proc_cell_vlservers_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) .next = afs_proc_cell_vlservers_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) .stop = afs_proc_cell_vlservers_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) .show = afs_proc_cell_vlservers_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * Display the list of fileservers we're using within a namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static int afs_proc_servers_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) struct afs_server *server;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) struct afs_addr_list *alist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (v == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) seq_puts(m, "UUID REF ACT\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) server = list_entry(v, struct afs_server, proc_link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) alist = rcu_dereference(server->addresses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) seq_printf(m, "%pU %3d %3d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) &server->uuid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) atomic_read(&server->ref),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) atomic_read(&server->active));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) seq_printf(m, " - info: fl=%lx rtt=%u brk=%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) server->flags, server->rtt, server->cb_s_break);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) seq_printf(m, " - probe: last=%d out=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) (int)(jiffies - server->probed_at) / HZ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) atomic_read(&server->probe_outstanding));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) seq_printf(m, " - ALIST v=%u rsp=%lx f=%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) alist->version, alist->responded, alist->failed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) for (i = 0; i < alist->nr_addrs; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) seq_printf(m, " [%x] %pISpc%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) i, &alist->addrs[i].transport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) alist->preferred == i ? "*" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static void *afs_proc_servers_start(struct seq_file *m, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) __acquires(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) return seq_hlist_start_head_rcu(&afs_seq2net(m)->fs_proc, *_pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) static void *afs_proc_servers_next(struct seq_file *m, void *v, loff_t *_pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) return seq_hlist_next_rcu(v, &afs_seq2net(m)->fs_proc, _pos);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) static void afs_proc_servers_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) __releases(rcu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static const struct seq_operations afs_proc_servers_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) .start = afs_proc_servers_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) .next = afs_proc_servers_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) .stop = afs_proc_servers_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) .show = afs_proc_servers_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) * Display the list of strings that may be substituted for the @sys pathname
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) * macro.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) static int afs_proc_sysname_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) struct afs_net *net = afs_seq2net(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) struct afs_sysnames *sysnames = net->sysnames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) unsigned int i = (unsigned long)v - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (i < sysnames->nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) seq_printf(m, "%s\n", sysnames->subs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) static void *afs_proc_sysname_start(struct seq_file *m, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) __acquires(&net->sysnames_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) struct afs_net *net = afs_seq2net(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) struct afs_sysnames *names;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) read_lock(&net->sysnames_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) names = net->sysnames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (*pos >= names->nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return (void *)(unsigned long)(*pos + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static void *afs_proc_sysname_next(struct seq_file *m, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) struct afs_net *net = afs_seq2net(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) struct afs_sysnames *names = net->sysnames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) *pos += 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) if (*pos >= names->nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) return (void *)(unsigned long)(*pos + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) static void afs_proc_sysname_stop(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) __releases(&net->sysnames_lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) struct afs_net *net = afs_seq2net(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) read_unlock(&net->sysnames_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) static const struct seq_operations afs_proc_sysname_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) .start = afs_proc_sysname_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) .next = afs_proc_sysname_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) .stop = afs_proc_sysname_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) .show = afs_proc_sysname_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) * Allow the @sys substitution to be configured.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) static int afs_proc_sysname_write(struct file *file, char *buf, size_t size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) struct afs_sysnames *sysnames, *kill;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) struct seq_file *m = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) struct afs_net *net = afs_seq2net(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) char *s, *p, *sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) int ret, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) sysnames = kzalloc(sizeof(*sysnames), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (!sysnames)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) refcount_set(&sysnames->usage, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) kill = sysnames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) p = buf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) while ((s = strsep(&p, " \t\n"))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) len = strlen(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) ret = -ENAMETOOLONG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) if (len >= AFSNAMEMAX)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) if (len >= 4 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) s[len - 4] == '@' &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) s[len - 3] == 's' &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) s[len - 2] == 'y' &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) s[len - 1] == 's')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) /* Protect against recursion */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) goto invalid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (s[0] == '.' &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) (len < 2 || (len == 2 && s[1] == '.')))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) goto invalid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (memchr(s, '/', len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) goto invalid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) ret = -EFBIG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (sysnames->nr >= AFS_NR_SYSNAME)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (strcmp(s, afs_init_sysname) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) sub = (char *)afs_init_sysname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) sub = kmemdup(s, len + 1, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) if (!sub)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) sysnames->subs[sysnames->nr] = sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) sysnames->nr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if (sysnames->nr == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) sysnames->subs[0] = sysnames->blank;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) sysnames->nr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) write_lock(&net->sysnames_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) kill = net->sysnames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) net->sysnames = sysnames;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) write_unlock(&net->sysnames_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) afs_put_sysnames(kill);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) invalid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) void afs_put_sysnames(struct afs_sysnames *sysnames)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) if (sysnames && refcount_dec_and_test(&sysnames->usage)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) for (i = 0; i < sysnames->nr; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (sysnames->subs[i] != afs_init_sysname &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) sysnames->subs[i] != sysnames->blank)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) kfree(sysnames->subs[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) kfree(sysnames);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) * Display general per-net namespace statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) static int afs_proc_stats_show(struct seq_file *m, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) struct afs_net *net = afs_seq2net_single(m);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) seq_puts(m, "kAFS statistics\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) seq_printf(m, "dir-mgmt: look=%u reval=%u inval=%u relpg=%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) atomic_read(&net->n_lookup),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) atomic_read(&net->n_reval),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) atomic_read(&net->n_inval),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) atomic_read(&net->n_relpg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) seq_printf(m, "dir-data: rdpg=%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) atomic_read(&net->n_read_dir));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) seq_printf(m, "dir-edit: cr=%u rm=%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) atomic_read(&net->n_dir_cr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) atomic_read(&net->n_dir_rm));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) seq_printf(m, "file-rd : n=%u nb=%lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) atomic_read(&net->n_fetches),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) atomic_long_read(&net->n_fetch_bytes));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) seq_printf(m, "file-wr : n=%u nb=%lu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) atomic_read(&net->n_stores),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) atomic_long_read(&net->n_store_bytes));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) * initialise /proc/fs/afs/<cell>/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) int afs_proc_cell_setup(struct afs_cell *cell)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) struct proc_dir_entry *dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct afs_net *net = cell->net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) _enter("%p{%s},%p", cell, cell->name, net->proc_afs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) dir = proc_net_mkdir(net->net, cell->name, net->proc_afs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (!dir)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) goto error_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) if (!proc_create_net_data("vlservers", 0444, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) &afs_proc_cell_vlservers_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) sizeof(struct afs_vl_seq_net_private),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) cell) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) !proc_create_net_data("volumes", 0444, dir,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) &afs_proc_cell_volumes_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) sizeof(struct seq_net_private),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) cell))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) goto error_tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) _leave(" = 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) error_tree:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) remove_proc_subtree(cell->name, net->proc_afs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) error_dir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) _leave(" = -ENOMEM");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) * remove /proc/fs/afs/<cell>/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) void afs_proc_cell_remove(struct afs_cell *cell)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) struct afs_net *net = cell->net;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) _enter("");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) remove_proc_subtree(cell->name, net->proc_afs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) _leave("");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) * initialise the /proc/fs/afs/ directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) int afs_proc_init(struct afs_net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) struct proc_dir_entry *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) _enter("");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) p = proc_net_mkdir(net->net, "afs", net->net->proc_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) goto error_dir;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) if (!proc_create_net_data_write("cells", 0644, p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) &afs_proc_cells_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) afs_proc_cells_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) sizeof(struct seq_net_private),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) NULL) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) !proc_create_net_single_write("rootcell", 0644, p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) afs_proc_rootcell_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) afs_proc_rootcell_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) NULL) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) !proc_create_net("servers", 0444, p, &afs_proc_servers_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) sizeof(struct seq_net_private)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) !proc_create_net_single("stats", 0444, p, afs_proc_stats_show, NULL) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) !proc_create_net_data_write("sysname", 0644, p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) &afs_proc_sysname_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) afs_proc_sysname_write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) sizeof(struct seq_net_private),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) goto error_tree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) net->proc_afs = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) _leave(" = 0");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) error_tree:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) proc_remove(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) error_dir:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) _leave(" = -ENOMEM");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) * clean up the /proc/fs/afs/ directory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) void afs_proc_cleanup(struct afs_net *net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) proc_remove(net->proc_afs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) net->proc_afs = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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