mdadm: Use _FILE_OFFSET_BITS to use largefile support

(From OE-Core rev: 5aabfacf7823b90fb61400b670989f77a89c7e5b) Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2026-05-08 05:09:24 +00:00 · 2022-12-15 00:45:45 -08:00
parent f702fd113a
commit 76bb16ff69
2 changed files with 148 additions and 0 deletions
@@ -0,0 +1,147 @@
+From 6b861a267a6ef6f60f6cc21e4c8e6d7cdd2451dc Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 10 Nov 2022 12:31:22 -0800
+Subject: [PATCH] restripe.c: Use _FILE_OFFSET_BITS to enable largefile support
+
+Instead of using the lseek64 and friends, its better to enable it via
+the feature macro _FILE_OFFSET_BITS = 64 and let the C library deal with
+the width of types
+
+Upstream-Status: Submitted [https://lore.kernel.org/linux-raid/20221110225546.337164-1-raj.khem@gmail.com/]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ restripe.c | 13 ++++++++-----
+ 1 file changed, 8 insertions(+), 5 deletions(-)
+
+--- a/restripe.c
+++ b/restripe.c
+@@ -22,6 +22,9 @@
+  *    Email: <neilb@suse.de>
+  */
+ 
+/* Enable largefile support */
+#define _FILE_OFFSET_BITS 64
+
+ #include "mdadm.h"
+ #include <stdint.h>
+ 
+@@ -581,7 +584,7 @@ int save_stripes(int *source, unsigned l
+ 				       raid_disks, level, layout);
+ 			if (dnum < 0) abort();
+ 			if (source[dnum] < 0 ||
+-			    lseek64(source[dnum],
+			    lseek(source[dnum],
+ 				    offsets[dnum] + offset, 0) < 0 ||
+ 			    read(source[dnum], buf+disk * chunk_size,
+ 				 chunk_size) != chunk_size) {
+@@ -754,8 +757,8 @@ int restore_stripes(int *dest, unsigned
+ 					   raid_disks, level, layout);
+ 			if (src_buf == NULL) {
+ 				/* read from file */
+-				if (lseek64(source, read_offset, 0) !=
+-					 (off64_t)read_offset) {
+				if (lseek(source, read_offset, 0) !=
+					 (off_t)read_offset) {
+ 					rv = -1;
+ 					goto abort;
+ 				}
+@@ -816,7 +819,7 @@ int restore_stripes(int *dest, unsigned
+ 		}
+ 		for (i=0; i < raid_disks ; i++)
+ 			if (dest[i] >= 0) {
+-				if (lseek64(dest[i],
+				if (lseek(dest[i],
+ 					 offsets[i]+offset, 0) < 0) {
+ 					rv = -1;
+ 					goto abort;
+@@ -866,7 +869,7 @@ int test_stripes(int *source, unsigned l
+ 		int disk;
+ 
+ 		for (i = 0 ; i < raid_disks ; i++) {
+-			if ((lseek64(source[i], offsets[i]+start, 0) < 0) ||
+			if ((lseek(source[i], offsets[i]+start, 0) < 0) ||
+ 			    (read(source[i], stripes[i], chunk_size) !=
+ 			     chunk_size)) {
+ 				free(q);
+--- a/raid6check.c
+++ b/raid6check.c
+@@ -22,6 +22,9 @@
+  *    Based on "restripe.c" from "mdadm" codebase
+  */
+ 
+/* Enable largefile support */
+#define _FILE_OFFSET_BITS 64
+
+ #include "mdadm.h"
+ #include <stdint.h>
+ #include <signal.h>
+@@ -279,9 +282,9 @@ int manual_repair(int chunk_size, int sy
+ 	}
+ 
+ 	int write_res1, write_res2;
+-	off64_t seek_res;
+	off_t seek_res;
+ 
+-	seek_res = lseek64(source[fd1],
+	seek_res = lseek(source[fd1],
+ 			   offsets[fd1] + start * chunk_size, SEEK_SET);
+ 	if (seek_res < 0) {
+ 		fprintf(stderr, "lseek failed for failed_disk1\n");
+@@ -289,7 +292,7 @@ int manual_repair(int chunk_size, int sy
+ 	}
+ 	write_res1 = write(source[fd1], blocks[failed_slot1], chunk_size);
+ 
+-	seek_res = lseek64(source[fd2],
+	seek_res = lseek(source[fd2],
+ 			   offsets[fd2] + start * chunk_size, SEEK_SET);
+ 	if (seek_res < 0) {
+ 		fprintf(stderr, "lseek failed for failed_disk2\n");
+@@ -374,7 +377,7 @@ int check_stripes(struct mdinfo *info, i
+ 			goto exitCheck;
+ 		}
+ 		for (i = 0 ; i < raid_disks ; i++) {
+-			off64_t seek_res = lseek64(source[i], offsets[i] + start * chunk_size,
+			off_t seek_res = lseek(source[i], offsets[i] + start * chunk_size,
+ 						   SEEK_SET);
+ 			if (seek_res < 0) {
+ 				fprintf(stderr, "lseek to source %d failed\n", i);
+--- a/swap_super.c
+++ b/swap_super.c
+@@ -1,3 +1,6 @@
+/* Enable largefile support */
+#define _FILE_OFFSET_BITS 64
+
+ #include <unistd.h>
+ #include <stdlib.h>
+ #include <fcntl.h>
+@@ -16,8 +19,6 @@
+ 
+ #define MD_NEW_SIZE_SECTORS(x)		((x & ~(MD_RESERVED_SECTORS - 1)) - MD_RESERVED_SECTORS)
+ 
+-extern long long lseek64(int, long long, int);
+-
+ int main(int argc, char *argv[])
+ {
+ 	int fd, i;
+@@ -38,8 +39,8 @@ int main(int argc, char *argv[])
+ 		exit(1);
+ 	}
+ 	offset = MD_NEW_SIZE_SECTORS(size) * 512LL;
+-	if (lseek64(fd, offset, 0) < 0LL) {
+-		perror("lseek64");
+	if (lseek(fd, offset, 0) < 0LL) {
+		perror("lseek");
+ 		exit(1);
+ 	}
+ 	if (read(fd, super, 4096) != 4096) {
+@@ -68,8 +69,8 @@ int main(int argc, char *argv[])
+ 		super[32*4+10*4 +i] = t;
+ 	}
+ 
+-	if (lseek64(fd, offset, 0) < 0LL) {
+-		perror("lseek64");
+	if (lseek(fd, offset, 0) < 0LL) {
+		perror("lseek");
+ 		exit(1);
+ 	}
+ 	if (write(fd, super, 4096) != 4096) {
@@ -24,6 +24,7 @@ SRC_URI = "${KERNELORG_MIRROR}/linux/utils/raid/mdadm/${BPN}-${PV}.tar.xz \
           file://0001-mdadm-skip-test-11spare-migration.patch \
           file://0001-Fix-parsing-of-r-in-monitor-manager-mode.patch \
           file://0001-Makefile-install-mdcheck.patch \
+           file://0001-restripe.c-Use-_FILE_OFFSET_BITS-to-enable-largefile.patch \
           "

 SRC_URI[sha256sum] = "461c215670864bb74a4d1a3620684aa2b2f8296dffa06743f26dda5557acf01d"