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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) {
|
