^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * linux/net/sunrpc/sysctl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Sysctl interface to sunrpc module.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * I would prefer to register the sunrpc table below sys/net, but that's
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * impossible at the moment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/linkage.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/sysctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/sunrpc/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/sunrpc/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sunrpc/stats.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/sunrpc/svc_xprt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "netns.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Declare the debug flags here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned int rpc_debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) EXPORT_SYMBOL_GPL(rpc_debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) unsigned int nfs_debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) EXPORT_SYMBOL_GPL(nfs_debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) unsigned int nfsd_debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) EXPORT_SYMBOL_GPL(nfsd_debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) unsigned int nlm_debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) EXPORT_SYMBOL_GPL(nlm_debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static struct ctl_table_header *sunrpc_table_header;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) static struct ctl_table sunrpc_table[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) rpc_register_sysctl(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (!sunrpc_table_header)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) sunrpc_table_header = register_sysctl_table(sunrpc_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) rpc_unregister_sysctl(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (sunrpc_table_header) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) unregister_sysctl_table(sunrpc_table_header);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) sunrpc_table_header = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static int proc_do_xprt(struct ctl_table *table, int write,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) void *buffer, size_t *lenp, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) char tmpbuf[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) ssize_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (write || *ppos) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) *lenp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) len = svc_print_xprts(tmpbuf, sizeof(tmpbuf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) len = memory_read_from_buffer(buffer, *lenp, ppos, tmpbuf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (len < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) *lenp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *lenp = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) proc_dodebug(struct ctl_table *table, int write, void *buffer, size_t *lenp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) char tmpbuf[20], *s = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) unsigned int value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) size_t left, len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) if ((*ppos && !write) || !*lenp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) *lenp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) left = *lenp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (write) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) p = buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) while (left && isspace(*p)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) left--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) p++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (!left)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (left > sizeof(tmpbuf) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) memcpy(tmpbuf, p, left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) tmpbuf[left] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) value = simple_strtol(tmpbuf, &s, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) if (s) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) left -= (s - tmpbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (left && !isspace(*s))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) while (left && isspace(*s)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) left--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) s++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) left = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) *(unsigned int *) table->data = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* Display the RPC tasks on writing to rpc_debug */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (strcmp(table->procname, "rpc_debug") == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) rpc_show_tasks(&init_net);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) len = sprintf(tmpbuf, "0x%04x", *(unsigned int *) table->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (len > left)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) len = left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) memcpy(buffer, tmpbuf, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if ((left -= len) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) *((char *)buffer + len) = '\n';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) left--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^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) *lenp -= left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) *ppos += *lenp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static struct ctl_table debug_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) .procname = "rpc_debug",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) .data = &rpc_debug,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) .proc_handler = proc_dodebug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) .procname = "nfs_debug",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) .data = &nfs_debug,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) .proc_handler = proc_dodebug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) .procname = "nfsd_debug",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) .data = &nfsd_debug,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) .proc_handler = proc_dodebug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) .procname = "nlm_debug",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) .data = &nlm_debug,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) .maxlen = sizeof(int),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) .mode = 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) .proc_handler = proc_dodebug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) .procname = "transports",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) .maxlen = 256,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) .mode = 0444,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) .proc_handler = proc_do_xprt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) static struct ctl_table sunrpc_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) .procname = "sunrpc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) .mode = 0555,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) .child = debug_table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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