From: Mateusz Kusiak <mateusz.kusiak@intel.com>
To: linux-raid@vger.kernel.org
Cc: jes@trained-monkey.org, colyli@suse.de
Subject: [PATCH 06/10] super1: refactor the code for enum
Date: Thu, 18 Aug 2022 16:56:17 +0200 [thread overview]
Message-ID: <20220818145621.21982-7-mateusz.kusiak@intel.com> (raw)
In-Reply-To: <20220818145621.21982-1-mateusz.kusiak@intel.com>
It prepares update_super1 for change context->update to enum.
Change if else statements into switch.
Signed-off-by: Mateusz Kusiak <mateusz.kusiak@intel.com>
---
super1.c | 149 ++++++++++++++++++++++++++++++++-----------------------
1 file changed, 87 insertions(+), 62 deletions(-)
diff --git a/super1.c b/super1.c
index 71af860c..6c81c1b9 100644
--- a/super1.c
+++ b/super1.c
@@ -1212,30 +1212,53 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
int rv = 0;
struct mdp_superblock_1 *sb = st->sb;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + MAX_SB_SIZE);
+ enum update_opt update_enum = map_name(update_options, update);
- if (strcmp(update, "homehost") == 0 &&
- homehost) {
- /* Note that 'homehost' is special as it is really
+ if (update_enum == UOPT_HOMEHOST && homehost) {
+ /*
+ * Note that 'homehost' is special as it is really
* a "name" update.
*/
char *c;
- update = "name";
+ update_enum = UOPT_NAME;
c = strchr(sb->set_name, ':');
if (c)
- strncpy(info->name, c+1, 31 - (c-sb->set_name));
+ snprintf(info->name, sizeof(info->name), "%s", c+1);
else
- strncpy(info->name, sb->set_name, 32);
- info->name[32] = 0;
+ snprintf(info->name, sizeof(info->name), "%s", sb->set_name);
}
- if (strcmp(update, "force-one")==0) {
+ switch (update_enum) {
+ case UOPT_NAME:
+ if (!info->name[0])
+ snprintf(info->name, sizeof(info->name), "%d", info->array.md_minor);
+ memset(sb->set_name, 0, sizeof(sb->set_name));
+ int namelen;
+
+ namelen = strnlen(homehost, MD_NAME_MAX) + 1 + strnlen(info->name, MD_NAME_MAX);
+ if (homehost &&
+ strchr(info->name, ':') == NULL &&
+ namelen < MD_NAME_MAX) {
+ strcpy(sb->set_name, homehost);
+ strcat(sb->set_name, ":");
+ strcat(sb->set_name, info->name);
+ } else {
+ namelen = min((int)strnlen(info->name, MD_NAME_MAX),
+ (int)sizeof(sb->set_name) - 1);
+ memcpy(sb->set_name, info->name, namelen);
+ memset(&sb->set_name[namelen], '\0',
+ sizeof(sb->set_name) - namelen);
+ }
+ break;
+ case UOPT_SPEC_FORCE_ONE:
/* Not enough devices for a working array,
* so bring this one up-to-date
*/
if (sb->events != __cpu_to_le64(info->events))
rv = 1;
sb->events = __cpu_to_le64(info->events);
- } else if (strcmp(update, "force-array")==0) {
+ break;
+ case UOPT_SPEC_FORCE_ARRAY:
/* Degraded array and 'force' requests to
* maybe need to mark it 'clean'.
*/
@@ -1248,7 +1271,8 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
rv = 1;
sb->resync_offset = MaxSector;
}
- } else if (strcmp(update, "assemble")==0) {
+ break;
+ case UOPT_SPEC_ASSEMBLE: {
int d = info->disk.number;
int want;
if (info->disk.state & (1<<MD_DISK_ACTIVE))
@@ -1281,7 +1305,9 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
__cpu_to_le64(info->reshape_progress);
rv = 1;
}
- } else if (strcmp(update, "linear-grow-new") == 0) {
+ break;
+ }
+ case UOPT_SPEC_LINEAR_GROW_NEW: {
int i;
int fd;
int max = __le32_to_cpu(sb->max_dev);
@@ -1324,7 +1350,9 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
ds - __le64_to_cpu(sb->data_offset));
}
}
- } else if (strcmp(update, "linear-grow-update") == 0) {
+ break;
+ }
+ case UOPT_SPEC_LINEAR_GROW_UPDATE: {
int max = __le32_to_cpu(sb->max_dev);
int i = info->disk.number;
if (max > MAX_DEVS || i > MAX_DEVS)
@@ -1336,19 +1364,20 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
sb->raid_disks = __cpu_to_le32(info->array.raid_disks);
sb->dev_roles[info->disk.number] =
__cpu_to_le16(info->disk.raid_disk);
- } else if (strcmp(update, "resync") == 0) {
- /* make sure resync happens */
- sb->resync_offset = 0ULL;
- } else if (strcmp(update, "uuid") == 0) {
+ break;
+ }
+ case UOPT_UUID:
copy_uuid(sb->set_uuid, info->uuid, super1.swapuuid);
if (__le32_to_cpu(sb->feature_map) & MD_FEATURE_BITMAP_OFFSET)
memcpy(bms->uuid, sb->set_uuid, 16);
- } else if (strcmp(update, "no-bitmap") == 0) {
+ break;
+ case UOPT_NO_BITMAP:
sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_BITMAP_OFFSET);
if (bms->version == BITMAP_MAJOR_CLUSTERED && !IsBitmapDirty(devname))
sb->resync_offset = MaxSector;
- } else if (strcmp(update, "bbl") == 0) {
+ break;
+ case UOPT_BBL: {
/* only possible if there is room after the bitmap, or if
* there is no bitmap
*/
@@ -1377,14 +1406,12 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
bb_offset = bitmap_offset + bm_sectors;
while (bb_offset < (long)sb_offset + 8 + 32*2 &&
bb_offset + 8+8 <= (long)data_offset)
- /* too close to bitmap, and room to grow */
bb_offset += 8;
if (bb_offset + 8 <= (long)data_offset) {
sb->bblog_size = __cpu_to_le16(8);
sb->bblog_offset = __cpu_to_le32(bb_offset);
}
} else {
- /* 1.0 - Put bbl just before super block */
if (bm_sectors && bitmap_offset < 0)
space = -bitmap_offset - bm_sectors;
else
@@ -1395,7 +1422,9 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
sb->bblog_offset = __cpu_to_le32((unsigned)-8);
}
}
- } else if (strcmp(update, "no-bbl") == 0) {
+ break;
+ }
+ case UOPT_NO_BBL:
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BAD_BLOCKS))
pr_err("Cannot remove active bbl from %s\n",devname);
else {
@@ -1403,12 +1432,14 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
sb->bblog_shift = 0;
sb->bblog_offset = 0;
}
- } else if (strcmp(update, "force-no-bbl") == 0) {
+ break;
+ case UOPT_FORCE_NO_BBL:
sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_BAD_BLOCKS);
sb->bblog_size = 0;
sb->bblog_shift = 0;
sb->bblog_offset = 0;
- } else if (strcmp(update, "ppl") == 0) {
+ break;
+ case UOPT_PPL: {
unsigned long long sb_offset = __le64_to_cpu(sb->super_offset);
unsigned long long data_offset = __le64_to_cpu(sb->data_offset);
unsigned long long data_size = __le64_to_cpu(sb->data_size);
@@ -1458,37 +1489,26 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
sb->ppl.offset = __cpu_to_le16(offset);
sb->ppl.size = __cpu_to_le16(space);
sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL);
- } else if (strcmp(update, "no-ppl") == 0) {
+ break;
+ }
+ case UOPT_NO_PPL:
sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_PPL |
MD_FEATURE_MUTLIPLE_PPLS);
- } else if (strcmp(update, "name") == 0) {
- if (info->name[0] == 0)
- sprintf(info->name, "%d", info->array.md_minor);
- memset(sb->set_name, 0, sizeof(sb->set_name));
- if (homehost &&
- strchr(info->name, ':') == NULL &&
- strlen(homehost)+1+strlen(info->name) < 32) {
- strcpy(sb->set_name, homehost);
- strcat(sb->set_name, ":");
- strcat(sb->set_name, info->name);
- } else {
- int namelen;
-
- namelen = min((int)strlen(info->name),
- (int)sizeof(sb->set_name) - 1);
- memcpy(sb->set_name, info->name, namelen);
- memset(&sb->set_name[namelen], '\0',
- sizeof(sb->set_name) - namelen);
- }
- } else if (strcmp(update, "devicesize") == 0 &&
- __le64_to_cpu(sb->super_offset) <
- __le64_to_cpu(sb->data_offset)) {
- /* set data_size to device size less data_offset */
+ break;
+ case UOPT_DEVICESIZE:
+ if (__le64_to_cpu(sb->super_offset) >=
+ __le64_to_cpu(sb->data_offset))
+ break;
+ /*
+ * set data_size to device size less data_offset
+ */
struct misc_dev_info *misc = (struct misc_dev_info*)
(st->sb + MAX_SB_SIZE + BM_SUPER_SIZE);
sb->data_size = __cpu_to_le64(
misc->device_size - __le64_to_cpu(sb->data_offset));
- } else if (strncmp(update, "revert-reshape", 14) == 0) {
+ break;
+ case UOPT_SPEC_REVERT_RESHAPE_NOBACKUP:
+ case UOPT_REVERT_RESHAPE:
rv = -2;
if (!(sb->feature_map &
__cpu_to_le32(MD_FEATURE_RESHAPE_ACTIVE)))
@@ -1506,7 +1526,7 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
* If that couldn't happen, the "-nobackup" version
* will be used.
*/
- if (strcmp(update, "revert-reshape-nobackup") == 0 &&
+ if (update_enum == UOPT_SPEC_REVERT_RESHAPE_NOBACKUP &&
sb->reshape_position == 0 &&
(__le32_to_cpu(sb->delta_disks) > 0 ||
(__le32_to_cpu(sb->delta_disks) == 0 &&
@@ -1569,32 +1589,37 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
}
done:;
}
- } else if (strcmp(update, "_reshape_progress") == 0)
+ break;
+ case UOPT_SPEC__RESHAPE_PROGRESS:
sb->reshape_position = __cpu_to_le64(info->reshape_progress);
- else if (strcmp(update, "writemostly") == 0)
- sb->devflags |= WriteMostly1;
- else if (strcmp(update, "readwrite") == 0)
+ break;
+ case UOPT_SPEC_READWRITE:
sb->devflags &= ~WriteMostly1;
- else if (strcmp(update, "failfast") == 0)
+ break;
+ case UOPT_SPEC_FAILFAST:
sb->devflags |= FailFast1;
- else if (strcmp(update, "nofailfast") == 0)
+ break;
+ case UOPT_SPEC_NOFAILFAST:
sb->devflags &= ~FailFast1;
- else if (strcmp(update, "layout-original") == 0 ||
- strcmp(update, "layout-alternate") == 0 ||
- strcmp(update, "layout-unspecified") == 0) {
+ break;
+ case UOPT_LAYOUT_ORIGINAL:
+ case UOPT_LAYOUT_ALTERNATE:
+ case UOPT_LAYOUT_UNSPECIFIED:
if (__le32_to_cpu(sb->level) != 0) {
pr_err("%s: %s only supported for RAID0\n",
- devname?:"", update);
+ devname ?: "", map_num(update_options, update_enum));
rv = -1;
- } else if (strcmp(update, "layout-unspecified") == 0) {
+ } else if (update_enum == UOPT_LAYOUT_UNSPECIFIED) {
sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_RAID0_LAYOUT);
sb->layout = 0;
} else {
sb->feature_map |= __cpu_to_le32(MD_FEATURE_RAID0_LAYOUT);
- sb->layout = __cpu_to_le32(update[7] == 'o' ? 1 : 2);
+ sb->layout = __cpu_to_le32(update_enum == UOPT_LAYOUT_ORIGINAL ? 1 : 2);
}
- } else
+ break;
+ default:
rv = -1;
+ }
sb->sb_csum = calc_sb_1_csum(sb);
--
2.26.2
next prev parent reply other threads:[~2022-08-18 14:58 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-18 14:56 [PATCH 00/10] Block update-subarray and refactor context update Mateusz Kusiak
2022-08-18 14:56 ` [PATCH 01/10] mdadm: Add option validation for --update-subarray Mateusz Kusiak
2022-09-13 15:12 ` Coly Li
2022-09-22 11:21 ` Kusiak, Mateusz
2022-08-18 14:56 ` [PATCH 02/10] Fix --update-subarray on active volume Mateusz Kusiak
2022-09-14 15:02 ` Coly Li
2022-08-18 14:56 ` [PATCH 03/10] Add code specific update options to enum Mateusz Kusiak
2022-09-14 15:02 ` Coly Li
2022-08-18 14:56 ` [PATCH 04/10] super-ddf: Remove update_super_ddf Mateusz Kusiak
2022-09-14 15:03 ` Coly Li
2022-08-18 14:56 ` [PATCH 05/10] super0: refactor the code for enum Mateusz Kusiak
2022-09-14 15:03 ` Coly Li
2022-09-22 11:21 ` Kusiak, Mateusz
2022-09-22 18:20 ` Jes Sorensen
2022-08-18 14:56 ` Mateusz Kusiak [this message]
2022-09-14 15:03 ` [PATCH 06/10] super1: " Coly Li
2022-09-22 11:21 ` Kusiak, Mateusz
2022-12-28 14:29 ` Jes Sorensen
2022-08-18 14:56 ` [PATCH 07/10] super-intel: " Mateusz Kusiak
2022-09-14 15:03 ` Coly Li
2022-09-22 11:22 ` Kusiak, Mateusz
2022-08-18 14:56 ` [PATCH 08/10] Change update to enum in update_super and update_subarray Mateusz Kusiak
2022-09-03 5:57 ` Coly Li
2022-09-14 15:03 ` Coly Li
2022-09-22 11:22 ` Kusiak, Mateusz
2022-08-18 14:56 ` [PATCH 09/10] Manage&Incremental: code refactor, string to enum Mateusz Kusiak
2022-09-14 15:03 ` Coly Li
2022-08-18 14:56 ` [PATCH 10/10] Change char* to enum in context->update & refactor code Mateusz Kusiak
2022-09-14 15:03 ` Coly Li
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