*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2015, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*/
+#include <linux/miscdevice.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <net/sock.h>
+#include <linux/uio.h>
+#include <linux/uaccess.h>
+
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/list.h>
+
+#include <linux/sysctl.h>
+#include <linux/debugfs.h>
+#include <asm/div64.h>
#define DEBUG_SUBSYSTEM S_LNET
#include <libcfs/libcfs.h>
#include <libcfs/libcfs_crypto.h>
#include <lnet/lib-lnet.h>
+#include <libcfs/crypto/llcrypt.h>
+#include "tracefile.h"
+
+struct lnet_debugfs_symlink_def {
+ const char *name;
+ const char *target;
+};
-static DECLARE_RWSEM(ioctl_list_sem);
-static LIST_HEAD(ioctl_list);
+static struct dentry *lnet_debugfs_root;
-int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand)
+BLOCKING_NOTIFIER_HEAD(libcfs_ioctl_list);
+EXPORT_SYMBOL(libcfs_ioctl_list);
+
+static inline size_t libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
{
- int rc = 0;
+ size_t len = sizeof(*data);
- down_write(&ioctl_list_sem);
- if (!list_empty(&hand->item))
- rc = -EBUSY;
- else
- list_add_tail(&hand->item, &ioctl_list);
- up_write(&ioctl_list_sem);
+ len += (data->ioc_inllen1 + 7) & ~7;
+ len += (data->ioc_inllen2 + 7) & ~7;
+ return len;
+}
- return rc;
+static bool libcfs_ioctl_is_invalid(struct libcfs_ioctl_data *data)
+{
+ const int maxlen = 1 << 30;
+ if (data->ioc_hdr.ioc_len > maxlen)
+ return true;
+
+ if (data->ioc_inllen1 > maxlen)
+ return true;
+
+ if (data->ioc_inllen2 > maxlen)
+ return true;
+
+ if (data->ioc_inlbuf1 && !data->ioc_inllen1)
+ return true;
+
+ if (data->ioc_inlbuf2 && !data->ioc_inllen2)
+ return true;
+
+ if (data->ioc_pbuf1 && !data->ioc_plen1)
+ return true;
+
+ if (data->ioc_pbuf2 && !data->ioc_plen2)
+ return true;
+
+ if (data->ioc_plen1 && !data->ioc_pbuf1)
+ return true;
+
+ if (data->ioc_plen2 && !data->ioc_pbuf2)
+ return true;
+
+ if (libcfs_ioctl_packlen(data) != data->ioc_hdr.ioc_len)
+ return true;
+
+ if (data->ioc_inllen1 &&
+ data->ioc_bulk[((data->ioc_inllen1 + 7) & ~7) +
+ data->ioc_inllen2 - 1] != '\0')
+ return true;
+
+ return false;
}
-EXPORT_SYMBOL(libcfs_register_ioctl);
-int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand)
+int libcfs_ioctl_data_adjust(struct libcfs_ioctl_data *data)
{
- int rc = 0;
+ ENTRY;
+
+ if (libcfs_ioctl_is_invalid(data)) {
+ CERROR("libcfs ioctl: parameter not correctly formatted\n");
+ RETURN(-EINVAL);
+ }
- down_write(&ioctl_list_sem);
- if (list_empty(&hand->item))
- rc = -ENOENT;
- else
- list_del_init(&hand->item);
- up_write(&ioctl_list_sem);
+ if (data->ioc_inllen1 != 0)
+ data->ioc_inlbuf1 = &data->ioc_bulk[0];
- return rc;
+ if (data->ioc_inllen2 != 0)
+ data->ioc_inlbuf2 = &data->ioc_bulk[0] +
+ cfs_size_round(data->ioc_inllen1);
+
+ RETURN(0);
+}
+
+int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
+ struct libcfs_ioctl_hdr __user *uhdr)
+{
+ struct libcfs_ioctl_hdr hdr;
+ int err;
+
+ ENTRY;
+ if (copy_from_user(&hdr, uhdr, sizeof(hdr)))
+ RETURN(-EFAULT);
+
+ if (hdr.ioc_version != LIBCFS_IOCTL_VERSION &&
+ hdr.ioc_version != LIBCFS_IOCTL_VERSION2) {
+ CERROR("libcfs ioctl: version mismatch expected %#x, got %#x\n",
+ LIBCFS_IOCTL_VERSION, hdr.ioc_version);
+ RETURN(-EINVAL);
+ }
+
+ if (hdr.ioc_len < sizeof(struct libcfs_ioctl_hdr)) {
+ CERROR("libcfs ioctl: user buffer too small for ioctl\n");
+ RETURN(-EINVAL);
+ }
+
+ if (hdr.ioc_len > LIBCFS_IOC_DATA_MAX) {
+ CERROR("libcfs ioctl: user buffer is too large %d/%d\n",
+ hdr.ioc_len, LIBCFS_IOC_DATA_MAX);
+ RETURN(-EINVAL);
+ }
+
+ LIBCFS_ALLOC(*hdr_pp, hdr.ioc_len);
+ if (*hdr_pp == NULL)
+ RETURN(-ENOMEM);
+
+ if (copy_from_user(*hdr_pp, uhdr, hdr.ioc_len))
+ GOTO(free, err = -EFAULT);
+
+ if ((*hdr_pp)->ioc_version != hdr.ioc_version ||
+ (*hdr_pp)->ioc_len != hdr.ioc_len) {
+ GOTO(free, err = -EINVAL);
+ }
+
+ RETURN(0);
+
+free:
+ LIBCFS_FREE(*hdr_pp, hdr.ioc_len);
+ RETURN(err);
}
-EXPORT_SYMBOL(libcfs_deregister_ioctl);
-int libcfs_ioctl(unsigned long cmd, void __user *uparam)
+static int libcfs_ioctl(unsigned long cmd, void __user *uparam)
{
struct libcfs_ioctl_data *data = NULL;
struct libcfs_ioctl_hdr *hdr;
libcfs_debug_mark_buffer(data->ioc_inlbuf1);
break;
- default: {
- struct libcfs_ioctl_handler *hand;
+ default:
+ err = blocking_notifier_call_chain(&libcfs_ioctl_list,
+ cmd, hdr);
+ if (!(err & NOTIFY_STOP_MASK))
+ /* No-one claimed the ioctl */
+ err = -EINVAL;
+ else
+ err = notifier_to_errno(err);
+ if (copy_to_user(uparam, hdr, hdr->ioc_len) && !err)
+ err = -EFAULT;
+ break;
+ }
+out:
+ LIBCFS_FREE(hdr, hdr->ioc_len);
+ RETURN(err);
+}
+
+static long
+libcfs_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (_IOC_TYPE(cmd) != IOC_LIBCFS_TYPE ||
+ _IOC_NR(cmd) < IOC_LIBCFS_MIN_NR ||
+ _IOC_NR(cmd) > IOC_LIBCFS_MAX_NR) {
+ CDEBUG(D_IOCTL, "invalid ioctl ( type %d, nr %d, size %d )\n",
+ _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
+ return -EINVAL;
+ }
+
+ return libcfs_ioctl(cmd, (void __user *)arg);
+}
+
+static const struct file_operations libcfs_fops = {
+ .owner = THIS_MODULE,
+ .unlocked_ioctl = libcfs_psdev_ioctl,
+};
+
+static struct miscdevice libcfs_dev = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "lnet",
+ .fops = &libcfs_fops,
+};
+
+int lprocfs_call_handler(void *data, int write, loff_t *ppos,
+ void __user *buffer, size_t *lenp,
+ int (*handler)(void *data, int write, loff_t pos,
+ void __user *buffer, int len))
+{
+ int rc = handler(data, write, *ppos, buffer, *lenp);
+
+ if (rc < 0)
+ return rc;
+
+ if (write) {
+ *ppos += *lenp;
+ } else {
+ *lenp = rc;
+ *ppos += rc;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(lprocfs_call_handler);
+
+static int __proc_dobitmasks(void *data, int write,
+ loff_t pos, void __user *buffer, int nob)
+{
+ const int tmpstrlen = 512;
+ char *tmpstr = NULL;
+ int rc;
+ unsigned int *mask = data;
+ int is_subsys = (mask == &libcfs_subsystem_debug) ? 1 : 0;
+ int is_printk = (mask == &libcfs_printk) ? 1 : 0;
+
+ if (!write) {
+ tmpstr = kmalloc(tmpstrlen, GFP_KERNEL | __GFP_ZERO);
+ if (!tmpstr)
+ return -ENOMEM;
+ libcfs_debug_mask2str(tmpstr, tmpstrlen, *mask, is_subsys);
+ rc = strlen(tmpstr);
+
+ if (pos >= rc) {
+ rc = 0;
+ } else {
+ rc = cfs_trace_copyout_string(buffer, nob,
+ tmpstr + pos, "\n");
+ }
+ } else {
+ tmpstr = memdup_user_nul(buffer, nob);
+ if (IS_ERR(tmpstr))
+ return PTR_ERR(tmpstr);
+
+ rc = libcfs_debug_str2mask(mask, strim(tmpstr), is_subsys);
+ /* Always print LBUG/LASSERT to console, so keep this mask */
+ if (is_printk)
+ *mask |= D_EMERG;
+ }
+
+ kfree(tmpstr);
+ return rc;
+}
+
+static int proc_dobitmasks(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
+ __proc_dobitmasks);
+}
+
+static int min_watchdog_ratelimit; /* disable ratelimiting */
+static int max_watchdog_ratelimit = (24*60*60); /* limit to once per day */
+
+static int __proc_dump_kernel(void *data, int write,
+ loff_t pos, void __user *buffer, int nob)
+{
+ if (!write)
+ return 0;
+
+ return cfs_trace_dump_debug_buffer_usrstr(buffer, nob);
+}
+
+static int proc_dump_kernel(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
+ __proc_dump_kernel);
+}
+
+static int __proc_daemon_file(void *data, int write,
+ loff_t pos, void __user *buffer, int nob)
+{
+ if (!write) {
+ int len = strlen(cfs_tracefile);
+
+ if (pos >= len)
+ return 0;
+
+ return cfs_trace_copyout_string(buffer, nob,
+ cfs_tracefile + pos, "\n");
+ }
+
+ return cfs_trace_daemon_command_usrstr(buffer, nob);
+}
+
+static int proc_daemon_file(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
+ __proc_daemon_file);
+}
+
+static int libcfs_force_lbug(struct ctl_table *table, int write,
+ void __user *buffer,
+ size_t *lenp, loff_t *ppos)
+{
+ if (write)
+ LBUG();
+ return 0;
+}
+
+static int proc_fail_loc(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int rc;
+ long old_fail_loc = cfs_fail_loc;
+
+ if (!*lenp || *ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) {
+ char *kbuf = memdup_user_nul(buffer, *lenp);
+
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
+ rc = kstrtoul(kbuf, 0, &cfs_fail_loc);
+ kfree(kbuf);
+ *ppos += *lenp;
+ } else {
+ char kbuf[64/3+3];
+
+ rc = scnprintf(kbuf, sizeof(kbuf), "%lu\n", cfs_fail_loc);
+ if (copy_to_user(buffer, kbuf, rc))
+ rc = -EFAULT;
+ else {
+ *lenp = rc;
+ *ppos += rc;
+ }
+ }
+
+ if (old_fail_loc != cfs_fail_loc) {
+ cfs_race_state = 1;
+ wake_up(&cfs_race_waitq);
+ }
+ return rc;
+}
+
+int debugfs_doint(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int rc;
+
+ if (!*lenp || *ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) {
+ char *kbuf = memdup_user_nul(buffer, *lenp);
+ int val;
+
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
+
+ rc = kstrtoint(kbuf, 0, &val);
+ kfree(kbuf);
+ if (!rc) {
+ if (table->extra1 && val < *(int *)table->extra1)
+ val = *(int *)table->extra1;
+ if (table->extra2 && val > *(int *)table->extra2)
+ val = *(int *)table->extra2;
+ *(int *)table->data = val;
+ }
+ *ppos += *lenp;
+ } else {
+ char kbuf[64/3+3];
+
+ rc = scnprintf(kbuf, sizeof(kbuf), "%u\n", *(int *)table->data);
+ if (copy_to_user(buffer, kbuf, rc))
+ rc = -EFAULT;
+ else {
+ *lenp = rc;
+ *ppos += rc;
+ }
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL(debugfs_doint);
+
+static int debugfs_dou64(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int rc;
+
+ if (!*lenp || *ppos) {
+ *lenp = 0;
+ return 0;
+ }
+
+ if (write) {
+ char *kbuf = memdup_user_nul(buffer, *lenp);
+ unsigned long long val;
+
+ if (IS_ERR(kbuf))
+ return PTR_ERR(kbuf);
+
+ rc = kstrtoull(kbuf, 0, &val);
+ kfree(kbuf);
+ if (!rc)
+ *(u64 *)table->data = val;
+ *ppos += *lenp;
+ } else {
+ char kbuf[64/3+3];
+
+ rc = scnprintf(kbuf, sizeof(kbuf), "%llu\n",
+ (unsigned long long)*(u64 *)table->data);
+ if (copy_to_user(buffer, kbuf, rc))
+ rc = -EFAULT;
+ else {
+ *lenp = rc;
+ *ppos += rc;
+ }
+ }
+
+ return rc;
+}
+
+static int debugfs_dostring(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ int len = *lenp;
+ char *kbuf = table->data;
- err = -EINVAL;
- down_read(&ioctl_list_sem);
- list_for_each_entry(hand, &ioctl_list, item) {
- err = hand->handle_ioctl(cmd, hdr);
- if (err == -EINVAL)
- continue;
+ if (!len || *ppos) {
+ *lenp = 0;
+ return 0;
+ }
+ if (len > table->maxlen)
+ len = table->maxlen;
+ if (write) {
+ if (copy_from_user(kbuf, buffer, len))
+ return -EFAULT;
+ memset(kbuf+len, 0, table->maxlen - len);
+ *ppos = *lenp;
+ } else {
+ len = strnlen(kbuf, len);
+ if (copy_to_user(buffer, kbuf, len))
+ return -EFAULT;
+ if (len < *lenp) {
+ if (copy_to_user(buffer+len, "\n", 1))
+ return -EFAULT;
+ len += 1;
+ }
+ *ppos += len;
+ *lenp -= len;
+ }
+ return len;
+}
+
+static int __proc_cpt_table(void *data, int write,
+ loff_t pos, void __user *buffer, int nob)
+{
+ char *buf = NULL;
+ int len = 4096;
+ int rc = 0;
- if (err == 0) {
- if (copy_to_user(uparam, hdr, hdr->ioc_len))
- err = -EFAULT;
- }
+ if (write)
+ return -EPERM;
+
+ while (1) {
+ LIBCFS_ALLOC(buf, len);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ rc = cfs_cpt_table_print(cfs_cpt_tab, buf, len);
+ if (rc >= 0)
break;
+
+ if (rc == -EFBIG) {
+ LIBCFS_FREE(buf, len);
+ len <<= 1;
+ continue;
}
- up_read(&ioctl_list_sem);
- break; }
+ goto out;
}
+
+ if (pos >= rc) {
+ rc = 0;
+ goto out;
+ }
+
+ rc = cfs_trace_copyout_string(buffer, nob, buf + pos, NULL);
out:
- LIBCFS_FREE(hdr, hdr->ioc_len);
- RETURN(err);
+ if (buf != NULL)
+ LIBCFS_FREE(buf, len);
+ return rc;
+}
+
+static int proc_cpt_table(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
+ __proc_cpt_table);
+}
+
+static int __proc_cpt_distance(void *data, int write,
+ loff_t pos, void __user *buffer, int nob)
+{
+ char *buf = NULL;
+ int len = 4096;
+ int rc = 0;
+
+ if (write)
+ return -EPERM;
+
+ while (1) {
+ LIBCFS_ALLOC(buf, len);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ rc = cfs_cpt_distance_print(cfs_cpt_tab, buf, len);
+ if (rc >= 0)
+ break;
+
+ if (rc == -EFBIG) {
+ LIBCFS_FREE(buf, len);
+ len <<= 1;
+ continue;
+ }
+ goto out;
+ }
+
+ if (pos >= rc) {
+ rc = 0;
+ goto out;
+ }
+
+ rc = cfs_trace_copyout_string(buffer, nob, buf + pos, NULL);
+ out:
+ if (buf != NULL)
+ LIBCFS_FREE(buf, len);
+ return rc;
+}
+
+static int proc_cpt_distance(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+ return lprocfs_call_handler(table->data, write, ppos, buffer, lenp,
+ __proc_cpt_distance);
+}
+
+static struct ctl_table lnet_table[] = {
+ {
+ .procname = "debug",
+ .data = &libcfs_debug,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dobitmasks,
+ },
+ {
+ .procname = "subsystem_debug",
+ .data = &libcfs_subsystem_debug,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dobitmasks,
+ },
+ {
+ .procname = "printk",
+ .data = &libcfs_printk,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dobitmasks,
+ },
+ {
+ .procname = "cpu_partition_table",
+ .maxlen = 128,
+ .mode = 0444,
+ .proc_handler = &proc_cpt_table,
+ },
+ {
+ .procname = "cpu_partition_distance",
+ .maxlen = 128,
+ .mode = 0444,
+ .proc_handler = &proc_cpt_distance,
+ },
+ {
+ .procname = "debug_log_upcall",
+ .data = lnet_debug_log_upcall,
+ .maxlen = sizeof(lnet_debug_log_upcall),
+ .mode = 0644,
+ .proc_handler = &debugfs_dostring,
+ },
+ {
+ .procname = "lnet_memused",
+ .data = (u64 *)&libcfs_kmem.counter,
+ .maxlen = sizeof(u64),
+ .mode = 0444,
+ .proc_handler = &debugfs_dou64,
+ },
+ {
+ .procname = "catastrophe",
+ .data = &libcfs_catastrophe,
+ .maxlen = sizeof(int),
+ .mode = 0444,
+ .proc_handler = &debugfs_doint,
+ },
+ {
+ .procname = "dump_kernel",
+ .maxlen = 256,
+ .mode = 0200,
+ .proc_handler = &proc_dump_kernel,
+ },
+ {
+ .procname = "daemon_file",
+ .mode = 0644,
+ .maxlen = 256,
+ .proc_handler = &proc_daemon_file,
+ },
+ {
+ .procname = "watchdog_ratelimit",
+ .data = &libcfs_watchdog_ratelimit,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &debugfs_doint,
+ .extra1 = &min_watchdog_ratelimit,
+ .extra2 = &max_watchdog_ratelimit,
+ },
+ {
+ .procname = "force_lbug",
+ .data = NULL,
+ .maxlen = 0,
+ .mode = 0200,
+ .proc_handler = &libcfs_force_lbug
+ },
+ {
+ .procname = "fail_loc",
+ .data = &cfs_fail_loc,
+ .maxlen = sizeof(cfs_fail_loc),
+ .mode = 0644,
+ .proc_handler = &proc_fail_loc
+ },
+ {
+ .procname = "fail_val",
+ .data = &cfs_fail_val,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &debugfs_doint
+ },
+ {
+ .procname = "fail_err",
+ .data = &cfs_fail_err,
+ .maxlen = sizeof(cfs_fail_err),
+ .mode = 0644,
+ .proc_handler = &debugfs_doint,
+ },
+ {
+ }
+};
+
+static const struct lnet_debugfs_symlink_def lnet_debugfs_symlinks[] = {
+ { .name = "console_ratelimit",
+ .target = "../../../module/libcfs/parameters/libcfs_console_ratelimit" },
+ { .name = "debug_path",
+ .target = "../../../module/libcfs/parameters/libcfs_debug_file_path" },
+ { .name = "panic_on_lbug",
+ .target = "../../../module/libcfs/parameters/libcfs_panic_on_lbug" },
+ { .name = "console_backoff",
+ .target = "../../../module/libcfs/parameters/libcfs_console_backoff" },
+ { .name = "debug_mb",
+ .target = "../../../module/libcfs/parameters/libcfs_debug_mb" },
+ { .name = "console_min_delay_centisecs",
+ .target = "../../../module/libcfs/parameters/libcfs_console_min_delay" },
+ { .name = "console_max_delay_centisecs",
+ .target = "../../../module/libcfs/parameters/libcfs_console_max_delay" },
+ { .name = NULL },
+};
+
+static ssize_t lnet_debugfs_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ctl_table *table = filp->private_data;
+ ssize_t rc = -EINVAL;
+
+ if (table) {
+ rc = table->proc_handler(table, 0, buf, &count, ppos);
+ if (!rc)
+ rc = count;
+ }
+
+ return rc;
+}
+
+static ssize_t lnet_debugfs_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct ctl_table *table = filp->private_data;
+ ssize_t rc = -EINVAL;
+
+ if (table) {
+ rc = table->proc_handler(table, 1, (void __user *)buf, &count,
+ ppos);
+ if (!rc)
+ rc = count;
+ }
+
+ return rc;
}
+static const struct file_operations lnet_debugfs_file_operations_rw = {
+ .open = simple_open,
+ .read = lnet_debugfs_read,
+ .write = lnet_debugfs_write,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations lnet_debugfs_file_operations_ro = {
+ .open = simple_open,
+ .read = lnet_debugfs_read,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations lnet_debugfs_file_operations_wo = {
+ .open = simple_open,
+ .write = lnet_debugfs_write,
+ .llseek = default_llseek,
+};
+
+static const struct file_operations *lnet_debugfs_fops_select(umode_t mode)
+{
+ if (!(mode & S_IWUGO))
+ return &lnet_debugfs_file_operations_ro;
+
+ if (!(mode & S_IRUGO))
+ return &lnet_debugfs_file_operations_wo;
+
+ return &lnet_debugfs_file_operations_rw;
+}
+
+void lnet_insert_debugfs(struct ctl_table *table)
+{
+ if (!lnet_debugfs_root)
+ lnet_debugfs_root = debugfs_create_dir("lnet", NULL);
+
+ /* Even if we cannot create, just ignore it altogether) */
+ if (IS_ERR_OR_NULL(lnet_debugfs_root))
+ return;
+
+ /* We don't save the dentry returned in next two calls, because
+ * we don't call debugfs_remove() but rather remove_recursive()
+ */
+ for (; table && table->procname; table++)
+ debugfs_create_file(table->procname, table->mode,
+ lnet_debugfs_root, table,
+ lnet_debugfs_fops_select(table->mode));
+}
+EXPORT_SYMBOL_GPL(lnet_insert_debugfs);
+
+static void lnet_insert_debugfs_links(
+ const struct lnet_debugfs_symlink_def *symlinks)
+{
+ for (; symlinks && symlinks->name; symlinks++)
+ debugfs_create_symlink(symlinks->name, lnet_debugfs_root,
+ symlinks->target);
+}
+
+void lnet_remove_debugfs(struct ctl_table *table)
+{
+ for (; table && table->procname; table++) {
+ struct qstr dname = QSTR_INIT(table->procname,
+ strlen(table->procname));
+ struct dentry *dentry;
+
+ dentry = d_hash_and_lookup(lnet_debugfs_root, &dname);
+ debugfs_remove(dentry);
+ }
+}
+EXPORT_SYMBOL_GPL(lnet_remove_debugfs);
+
static int __init libcfs_init(void)
{
int rc;
+ cfs_arch_init();
+
+ init_libcfs_vfree_atomic();
+
rc = libcfs_debug_init(5 * 1024 * 1024);
if (rc < 0) {
- printk(KERN_ERR "LustreError: libcfs_debug_init: %d\n", rc);
+ pr_err("LustreError: libcfs_debug_init: rc = %d\n", rc);
return (rc);
}
+ cfs_debug_init();
+
rc = cfs_cpu_init();
if (rc != 0)
goto cleanup_debug;
goto cleanup_deregister;
}
- /* max to 4 threads, should be enough for rehash */
- rc = min(cfs_cpt_weight(cfs_cpt_table, CFS_CPT_ANY), 4);
- rc = cfs_wi_sched_create("cfs_rh", cfs_cpt_table, CFS_CPT_ANY,
- rc, &cfs_sched_rehash);
- if (rc != 0) {
- CERROR("Startup workitem scheduler: error: %d\n", rc);
+ cfs_rehash_wq = alloc_workqueue("cfs_rh", WQ_SYSFS, 4);
+ if (!cfs_rehash_wq) {
+ rc = -ENOMEM;
+ CERROR("libcfs: failed to start rehash workqueue: rc = %d\n",
+ rc);
goto cleanup_deregister;
}
goto cleanup_wi;
}
+ lnet_insert_debugfs(lnet_table);
+ if (!IS_ERR_OR_NULL(lnet_debugfs_root))
+ lnet_insert_debugfs_links(lnet_debugfs_symlinks);
- rc = insert_proc();
+ rc = llcrypt_init();
if (rc) {
- CERROR("insert_proc: error %d\n", rc);
- goto cleanup_crypto;
+ CERROR("llcrypt_init: error %d\n", rc);
+ goto cleanup_wi;
}
CDEBUG (D_OTHER, "portals setup OK\n");
return 0;
-cleanup_crypto:
- cfs_crypto_unregister();
cleanup_wi:
cfs_wi_shutdown();
cleanup_deregister:
{
int rc;
- remove_proc();
+ /* Remove everthing */
+ debugfs_remove_recursive(lnet_debugfs_root);
+ lnet_debugfs_root = NULL;
- CDEBUG(D_MALLOC, "before Portals cleanup: kmem %d\n",
- atomic_read(&libcfs_kmemory));
+ CDEBUG(D_MALLOC, "before Portals cleanup: kmem %lld\n",
+ libcfs_kmem_read());
- if (cfs_sched_rehash != NULL) {
- cfs_wi_sched_destroy(cfs_sched_rehash);
- cfs_sched_rehash = NULL;
+ llcrypt_exit();
+
+ if (cfs_rehash_wq) {
+ destroy_workqueue(cfs_rehash_wq);
+ cfs_rehash_wq = NULL;
}
cfs_crypto_unregister();
cfs_cpu_fini();
- if (atomic_read(&libcfs_kmemory) != 0)
- CERROR("Portals memory leaked: %d bytes\n",
- atomic_read(&libcfs_kmemory));
+ /* the below message is checked in test-framework.sh check_mem_leak() */
+ if (libcfs_kmem_read() != 0)
+ CERROR("Portals memory leaked: %lld bytes\n",
+ libcfs_kmem_read());
rc = libcfs_debug_cleanup();
if (rc)
- printk(KERN_ERR "LustreError: libcfs_debug_cleanup: %d\n",
- rc);
+ pr_err("LustreError: libcfs_debug_cleanup: rc = %d\n", rc);
+
+ exit_libcfs_vfree_atomic();
}
MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
git://git.whamcloud.com / fs / lustre-release.git / blobdiff