--- /dev/null
+/*
+ * debug.c - NTFS kernel debug support. Part of the Linux-NTFS project.
+ *
+ * Copyright (c) 2001-2004 Anton Altaparmakov
+ *
+ * This program/include file is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program/include file is distributed in the hope that it will be
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (in the main directory of the Linux-NTFS
+ * distribution in the file COPYING); if not, write to the Free Software
+ * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include "debug.h"
+
+/**
+ * __ntfs_warning - output a warning to the syslog
+ * @function: name of function outputting the warning
+ * @sb: super block of mounted ntfs filesystem
+ * @fmt: warning string containing format specifications
+ * @...: a variable number of arguments specified in @fmt
+ *
+ * Outputs a warning to the syslog for the mounted ntfs filesystem described
+ * by @sb.
+ *
+ * @fmt and the corresponding @... is printf style format string containing
+ * the warning string and the corresponding format arguments, respectively.
+ *
+ * @function is the name of the function from which __ntfs_warning is being
+ * called.
+ *
+ * Note, you should be using debug.h::ntfs_warning(@sb, @fmt, @...) instead
+ * as this provides the @function parameter automatically.
+ */
+void __ntfs_warning(const char *function, const struct super_block *sb,
+ const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ int flen = 0;
+
+#ifndef DEBUG
+ if (!printk_ratelimit())
+ return;
+#endif
+ if (function)
+ flen = strlen(function);
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ if (sb)
+ pr_warn("(device %s): %s(): %pV\n",
+ sb->s_id, flen ? function : "", &vaf);
+ else
+ pr_warn("%s(): %pV\n", flen ? function : "", &vaf);
+ va_end(args);
+}
+
+/**
+ * __ntfs_error - output an error to the syslog
+ * @function: name of function outputting the error
+ * @sb: super block of mounted ntfs filesystem
+ * @fmt: error string containing format specifications
+ * @...: a variable number of arguments specified in @fmt
+ *
+ * Outputs an error to the syslog for the mounted ntfs filesystem described
+ * by @sb.
+ *
+ * @fmt and the corresponding @... is printf style format string containing
+ * the error string and the corresponding format arguments, respectively.
+ *
+ * @function is the name of the function from which __ntfs_error is being
+ * called.
+ *
+ * Note, you should be using debug.h::ntfs_error(@sb, @fmt, @...) instead
+ * as this provides the @function parameter automatically.
+ */
+void __ntfs_error(const char *function, const struct super_block *sb,
+ const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ int flen = 0;
+
+#ifndef DEBUG
+ if (!printk_ratelimit())
+ return;
+#endif
+ if (function)
+ flen = strlen(function);
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ if (sb)
+ pr_err("(device %s): %s(): %pV\n",
+ sb->s_id, flen ? function : "", &vaf);
+ else
+ pr_err("%s(): %pV\n", flen ? function : "", &vaf);
+ va_end(args);
+}
+
+#ifdef DEBUG
+
+/* If 1, output debug messages, and if 0, don't. */
+int debug_msgs = 0;
+
+void __ntfs_debug(const char *file, int line, const char *function,
+ const char *fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+ int flen = 0;
+
+ if (!debug_msgs)
+ return;
+ if (function)
+ flen = strlen(function);
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ pr_debug("(%s, %d): %s(): %pV", file, line, flen ? function : "", &vaf);
+ va_end(args);
+}
+
+/* Dump a runlist. Caller has to provide synchronisation for @rl. */
+void ntfs_debug_dump_runlist(const runlist_element *rl)
+{
+ int i;
+ const char *lcn_str[5] = { "LCN_HOLE ", "LCN_RL_NOT_MAPPED",
+ "LCN_ENOENT ", "LCN_unknown " };
+
+ if (!debug_msgs)
+ return;
+ pr_debug("Dumping runlist (values in hex):\n");
+ if (!rl) {
+ pr_debug("Run list not present.\n");
+ return;
+ }
+ pr_debug("VCN LCN Run length\n");
+ for (i = 0; ; i++) {
+ LCN lcn = (rl + i)->lcn;
+
+ if (lcn < (LCN)0) {
+ int index = -lcn - 1;
+
+ if (index > -LCN_ENOENT - 1)
+ index = 3;
+ pr_debug("%-16Lx %s %-16Lx%s\n",
+ (long long)(rl + i)->vcn, lcn_str[index],
+ (long long)(rl + i)->length,
+ (rl + i)->length ? "" :
+ " (runlist end)");
+ } else
+ pr_debug("%-16Lx %-16Lx %-16Lx%s\n",
+ (long long)(rl + i)->vcn,
+ (long long)(rl + i)->lcn,
+ (long long)(rl + i)->length,
+ (rl + i)->length ? "" :
+ " (runlist end)");
+ if (!(rl + i)->length)
+ break;
+ }
+}
+
+#endif
Code Review / kvmfornfv.git / blobdiff