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From: Allison Henderson <allison.henderson@oracle.com>
To: linux-xfs@vger.kernel.org
Subject: [PATCH v13 13/14] [RFC] xfsprogs: Add log item printing for ATTRI and ATTRD
Date: Thu, 22 Oct 2020 23:33:05 -0700	[thread overview]
Message-ID: <20201023063306.7441-14-allison.henderson@oracle.com> (raw)
In-Reply-To: <20201023063306.7441-1-allison.henderson@oracle.com>

This patch implements a new set of log printing functions to print the
ATTRI and ATTRD items and vectors in the log.  These will be used during
log dump and log recover operations.

RFC: Though most attributes are strings, the attribute operations accept
any binary payload, so we cannot assume them printable.  This was done
intentionally in preparation for parent pointers.  And until parent
pointers get here, attributes have no discernible format.  So the print
routines are just a simple hex dump for now.  It's not pretty, but works
for now.

Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
---
 logprint/log_misc.c      |  31 +++++++-
 logprint/log_print_all.c |  12 +++
 logprint/log_redo.c      | 197 +++++++++++++++++++++++++++++++++++++++++++++++
 logprint/logprint.h      |  10 +++
 4 files changed, 249 insertions(+), 1 deletion(-)

diff --git a/logprint/log_misc.c b/logprint/log_misc.c
index af927cb..900a75d 100644
--- a/logprint/log_misc.c
+++ b/logprint/log_misc.c
@@ -54,11 +54,29 @@ print_stars(void)
 	   "***********************************\n");
 }	/* print_stars */
 
+void
+print_hex_dump(char *ptr, int len) {
+	int i = 0;
+
+	for (i = 0; i < len; i++) {
+		if (i % 16 == 0)
+			printf("%08x ", i);
+
+		printf("%02x", ptr[i]);
+
+		if ((i+1)%16 == 0)
+			printf("\n");
+		else if ((i+1)%2 == 0)
+			printf(" ");
+	}
+	printf("\n");
+}
+
 /*
  * Given a pointer to a data segment, print out the data as if it were
  * a log operation header.
  */
-static void
+void
 xlog_print_op_header(xlog_op_header_t	*op_head,
 		     int		i,
 		     char		**ptr)
@@ -949,6 +967,17 @@ xlog_print_record(
 					be32_to_cpu(op_head->oh_len));
 			break;
 		    }
+		    case XFS_LI_ATTRI: {
+                        skip = xlog_print_trans_attri(&ptr,
+                                        be32_to_cpu(op_head->oh_len),
+                                        &i);
+                        break;
+                    }
+                    case XFS_LI_ATTRD: {
+                        skip = xlog_print_trans_attrd(&ptr,
+                                        be32_to_cpu(op_head->oh_len));
+                        break;
+                    }
 		    case XFS_LI_RUI: {
 			skip = xlog_print_trans_rui(&ptr,
 					be32_to_cpu(op_head->oh_len),
diff --git a/logprint/log_print_all.c b/logprint/log_print_all.c
index 1924a0a..2b3f035 100644
--- a/logprint/log_print_all.c
+++ b/logprint/log_print_all.c
@@ -402,6 +402,12 @@ xlog_recover_print_logitem(
 	case XFS_LI_EFI:
 		xlog_recover_print_efi(item);
 		break;
+	case XFS_LI_ATTRD:
+		xlog_recover_print_attrd(item);
+		break;
+	case XFS_LI_ATTRI:
+		xlog_recover_print_attri(item);
+		break;
 	case XFS_LI_RUD:
 		xlog_recover_print_rud(item);
 		break;
@@ -454,6 +460,12 @@ xlog_recover_print_item(
 	case XFS_LI_EFI:
 		printf("EFI");
 		break;
+	case XFS_LI_ATTRD:
+		printf("ATTRD");
+		break;
+	case XFS_LI_ATTRI:
+		printf("ATTRI");
+		break;
 	case XFS_LI_RUD:
 		printf("RUD");
 		break;
diff --git a/logprint/log_redo.c b/logprint/log_redo.c
index 297e203..3e790e2 100644
--- a/logprint/log_redo.c
+++ b/logprint/log_redo.c
@@ -8,6 +8,7 @@
 #include "libxlog.h"
 
 #include "logprint.h"
+#include "xfs_attr_item.h"
 
 /* Extent Free Items */
 
@@ -653,3 +654,199 @@ xlog_recover_print_bud(
 	f = item->ri_buf[0].i_addr;
 	xlog_print_trans_bud(&f, sizeof(struct xfs_bud_log_format));
 }
+
+/* Attr Items */
+
+static int
+xfs_attri_copy_log_format(
+	char				*buf,
+	uint				len,
+	struct xfs_attri_log_format	*dst_attri_fmt)
+{
+	uint dst_len = sizeof(struct xfs_attri_log_format);
+
+	if (len == dst_len) {
+		memcpy((char *)dst_attri_fmt, buf, len);
+		return 0;
+	}
+
+	fprintf(stderr, _("%s: bad size of attri format: %u; expected %u\n"),
+		progname, len, dst_len);
+	return 1;
+}
+
+int
+xlog_print_trans_attri(
+	char				**ptr,
+	uint				src_len,
+	int				*i)
+{
+	struct xfs_attri_log_format	*src_f = NULL;
+	xlog_op_header_t		*head = NULL;
+	uint				dst_len;
+	int				error = 0;
+
+	dst_len = sizeof(struct xfs_attri_log_format);
+	if (src_len != dst_len) {
+		fprintf(stderr, _("%s: bad size of attri format: %u; expected %u\n"),
+				progname, src_len, dst_len);
+		return 1;
+	}
+
+	/*
+	 * memmove to ensure 8-byte alignment for the long longs in
+	 * xfs_attri_log_format_t structure
+	 */
+	if ((src_f = (struct xfs_attri_log_format *)malloc(src_len)) == NULL) {
+		fprintf(stderr, _("%s: xlog_print_trans_attri: malloc failed\n"),
+				progname);
+		exit(1);
+	}
+	memmove((char*)src_f, *ptr, src_len);
+	*ptr += src_len;
+
+	printf(_("ATTRI:  #regs: %d	name_len: %d, value_len: %d  id: 0x%llx\n"),
+		src_f->alfi_size, src_f->alfi_name_len, src_f->alfi_value_len,
+				(unsigned long long)src_f->alfi_id);
+
+	if (src_f->alfi_name_len > 0) {
+		printf(_("\n"));
+		(*i)++;
+		head = (xlog_op_header_t *)*ptr;
+		xlog_print_op_header(head, *i, ptr);
+		error = xlog_print_trans_attri_name(ptr, be32_to_cpu(head->oh_len));
+		if (error)
+			goto error;
+	}
+
+	if (src_f->alfi_value_len > 0) {
+		printf(_("\n"));
+		(*i)++;
+		head = (xlog_op_header_t *)*ptr;
+		xlog_print_op_header(head, *i, ptr);
+		error = xlog_print_trans_attri_value(ptr, be32_to_cpu(head->oh_len),
+				src_f->alfi_value_len);
+	}
+error:
+	free(src_f);
+
+	return error;
+}	/* xlog_print_trans_attri */
+
+int
+xlog_print_trans_attri_name(
+	char				**ptr,
+	uint				src_len)
+{
+	printf(_("ATTRI:  name len:%u\n"), src_len);
+	print_hex_dump(*ptr, src_len);
+
+	*ptr += src_len;
+
+	return 0;
+}	/* xlog_print_trans_attri */
+
+int
+xlog_print_trans_attri_value(
+	char				**ptr,
+	uint				src_len,
+	int				value_len)
+{
+	int len = value_len;
+
+	if (len > MAX_ATTR_VAL_PRINT)
+		len = MAX_ATTR_VAL_PRINT;
+
+	printf(_("ATTRI:  value len:%u\n"), value_len);
+	print_hex_dump(*ptr, len);
+
+	*ptr += src_len;
+
+	return 0;
+}	/* xlog_print_trans_attri_value */
+
+void
+xlog_recover_print_attri(
+	struct xlog_recover_item	*item)
+{
+	struct xfs_attri_log_format	*f, *src_f = NULL;
+	uint				src_len, dst_len;
+
+	int				region = 0;
+
+	src_f = (struct xfs_attri_log_format *)item->ri_buf[0].i_addr;
+	src_len = item->ri_buf[region].i_len;
+
+	/*
+	 * An xfs_attri_log_format structure contains a attribute name and
+	 * variable length value  as the last field.
+	 */
+	dst_len = sizeof(struct xfs_attri_log_format);
+
+	if ((f = ((struct xfs_attri_log_format *)malloc(dst_len))) == NULL) {
+		fprintf(stderr, _("%s: xlog_recover_print_attri: malloc failed\n"),
+			progname);
+		exit(1);
+	}
+	if (xfs_attri_copy_log_format((char*)src_f, src_len, f))
+		goto out;
+
+	printf(_("ATTRI:  #regs: %d	name_len: %d, value_len: %d  id: 0x%llx\n"),
+		f->alfi_size, f->alfi_name_len, f->alfi_value_len, (unsigned long long)f->alfi_id);
+
+	if (f->alfi_name_len > 0) {
+		region++;
+		printf(_("ATTRI:  name len:%u\n"), f->alfi_name_len);
+		print_hex_dump((char *)item->ri_buf[region].i_addr,
+			       f->alfi_name_len);
+	}
+
+	if (f->alfi_value_len > 0) {
+		int len = f->alfi_value_len;
+
+		if (len > MAX_ATTR_VAL_PRINT)
+			len = MAX_ATTR_VAL_PRINT;
+
+		region++;
+		printf(_("ATTRI:  value len:%u\n"), f->alfi_value_len);
+		print_hex_dump((char *)item->ri_buf[region].i_addr, len);
+	}
+
+out:
+	free(f);
+
+}
+
+int
+xlog_print_trans_attrd(char **ptr, uint len)
+{
+	struct xfs_attrd_log_format *f;
+	struct xfs_attrd_log_format lbuf;
+	uint core_size = sizeof(struct xfs_attrd_log_format);
+
+	memcpy(&lbuf, *ptr, MIN(core_size, len));
+	f = &lbuf;
+	*ptr += len;
+	if (len >= core_size) {
+		printf(_("ATTRD:  #regs: %d	id: 0x%llx\n"),
+			f->alfd_size,
+			(unsigned long long)f->alfd_alf_id);
+		return 0;
+	} else {
+		printf(_("ATTRD: Not enough data to decode further\n"));
+		return 1;
+	}
+}	/* xlog_print_trans_attrd */
+
+void
+xlog_recover_print_attrd(
+	struct xlog_recover_item		*item)
+{
+	struct xfs_attrd_log_format	*f;
+
+	f = (struct xfs_attrd_log_format *)item->ri_buf[0].i_addr;
+
+	printf(_("	ATTRD:  #regs: %d	id: 0x%llx\n"),
+		f->alfd_size,
+		(unsigned long long)f->alfd_alf_id);
+}
diff --git a/logprint/logprint.h b/logprint/logprint.h
index ee85bfe..2e256bd 100644
--- a/logprint/logprint.h
+++ b/logprint/logprint.h
@@ -28,6 +28,7 @@ extern void xfs_log_print_trans(struct xlog *, int);
 extern void print_xlog_record_line(void);
 extern void print_xlog_op_line(void);
 extern void print_stars(void);
+extern void print_hex_dump(char* ptr, int len);
 
 extern struct xfs_inode_log_format *
 	xfs_inode_item_format_convert(char *, uint, struct xfs_inode_log_format *);
@@ -52,4 +53,13 @@ extern void xlog_recover_print_bui(struct xlog_recover_item *item);
 extern int xlog_print_trans_bud(char **ptr, uint len);
 extern void xlog_recover_print_bud(struct xlog_recover_item *item);
 
+#define MAX_ATTR_VAL_PRINT	128
+
+extern int xlog_print_trans_attri(char **ptr, uint src_len, int *i);
+extern int xlog_print_trans_attri_name(char **ptr, uint src_len);
+extern int xlog_print_trans_attri_value(char **ptr, uint src_len, int value_len);
+extern void xlog_recover_print_attri(struct xlog_recover_item *item);
+extern int xlog_print_trans_attrd(char **ptr, uint len);
+extern void xlog_recover_print_attrd(struct xlog_recover_item *item);
+extern void xlog_print_op_header(xlog_op_header_t *op_head, int i, char **ptr);
 #endif	/* LOGPRINT_H */
-- 
2.7.4


  parent reply	other threads:[~2020-10-23  6:33 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-23  6:32 [PATCH v13 00/14] xfsprogs: Delayed Attributes Allison Henderson
2020-10-23  6:32 ` [PATCH v13 01/14] xfs: store inode btree block counts in AGI header Allison Henderson
2020-10-23  6:32 ` [PATCH v13 02/14] xfs: enable new inode btree counters feature Allison Henderson
2020-10-23  6:32 ` [PATCH v13 03/14] xfsprogs: Add helper xfs_attr_node_remove_step Allison Henderson
2020-10-23  6:32 ` [PATCH v13 04/14] xfsprogs: Add delay ready attr remove routines Allison Henderson
2020-10-23  6:32 ` [PATCH v13 05/14] xfsprogs: Add delay ready attr set routines Allison Henderson
2020-10-23  6:32 ` [PATCH v13 06/14] xfsprogs: Rename __xfs_attr_rmtval_remove Allison Henderson
2020-10-23  6:32 ` [PATCH v13 07/14] xfsprogs: Set up infastructure for deferred attribute operations Allison Henderson
2020-10-23  6:33 ` [PATCH v13 08/14] xfsprogs: Add xfs_attr_set_deferred and xfs_attr_remove_deferred Allison Henderson
2020-10-23  6:33 ` [PATCH v13 09/14] xfsprogs: Add feature bit XFS_SB_FEAT_INCOMPAT_LOG_DELATTR Allison Henderson
2020-10-23  6:33 ` [PATCH v13 10/14] xfsprogs: Enable delayed attributes Allison Henderson
2020-10-23  6:33 ` [PATCH v13 11/14] xfsprogs: Remove unused xfs_attr_*_args Allison Henderson
2020-10-23  6:33 ` [PATCH v13 12/14] xfs_io: Add delayed attributes error tag Allison Henderson
2020-10-23  6:33 ` Allison Henderson [this message]
2020-11-10 23:52   ` [PATCH v13 13/14] [RFC] xfsprogs: Add log item printing for ATTRI and ATTRD Darrick J. Wong
2020-11-13  3:57     ` Allison Henderson
2020-10-23  6:33 ` [PATCH v13 14/14] xfsprogs: Add delayed attribute flag to cmd Allison Henderson
2020-11-10 23:48   ` Darrick J. Wong
2020-11-13  3:52     ` Allison Henderson

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