declare new function to integrate repeated fstat operation,
the fd and devname are necessary arguments, the dev_t *rdev
is optional. according to parse the pointer of dev_t *rdev,
if valid, assigned device number to rdev, if NULL, ignores.
Signed-off-by: Zhilong Liu <zlliu@xxxxxxxx>
---
Assemble.c | 17 +++++------------
Build.c | 5 +++--
Create.c | 23 ++++++++++-------------
Grow.c | 10 ++++------
Incremental.c | 33 ++++++++++++---------------------
Manage.c | 2 +-
bitmap.c | 10 +---------
mdadm.h | 1 +
super-intel.c | 13 +++----------
util.c | 17 +++++++++++++++++
10 files changed, 57 insertions(+), 74 deletions(-)
diff --git a/Assemble.c b/Assemble.c
index d6beb23..58bf96d 100644
--- a/Assemble.c
+++ b/Assemble.c
@@ -149,6 +149,7 @@ static int select_devices(struct mddev_dev *devlist,
struct mdinfo *content = NULL;
int report_mismatch = ((inargv && c->verbose >= 0) || c->verbose > 0);
struct domainlist *domains = NULL;
+ dev_t rdev;
tmpdev = devlist; num_devs = 0;
while (tmpdev) {
@@ -169,7 +170,6 @@ static int select_devices(struct mddev_dev *devlist,
tmpdev = tmpdev ? tmpdev->next : NULL) {
char *devname = tmpdev->devname;
int dfd;
- struct stat stb;
struct supertype *tst;
struct dev_policy *pol = NULL;
int found_container = 0;
@@ -204,14 +204,7 @@ static int select_devices(struct mddev_dev *devlist,
pr_err("cannot open device %s: %s\n",
devname, strerror(errno));
tmpdev->used = 2;
- } else if (fstat(dfd, &stb)< 0) {
- /* Impossible! */
- pr_err("fstat failed for %s: %s\n",
- devname, strerror(errno));
- tmpdev->used = 2;
- } else if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- pr_err("%s is not a block device.\n",
- devname);
+ } else if (fstat_md_is_blkdev(dfd, devname, &rdev)){
tmpdev->used = 2;
} else if (must_be_container(dfd)) {
if (st) {
@@ -234,7 +227,7 @@ static int select_devices(struct mddev_dev *devlist,
devname);
tmpdev->used = 2;
} else if (auto_assem &&
- !conf_test_metadata(tst->ss->name, (pol = devid_policy(stb.st_rdev)),
+ !conf_test_metadata(tst->ss->name, (pol = devid_policy(rdev)),
tst->ss->match_home(tst, c->homehost) == 1)) {
if (report_mismatch)
pr_err("%s has metadata type %s for which auto-assembly is disabled\n",
@@ -261,7 +254,7 @@ static int select_devices(struct mddev_dev *devlist,
tst->ss->name, devname);
tmpdev->used = 2;
} else if (auto_assem && st == NULL &&
- !conf_test_metadata(tst->ss->name, (pol = devid_policy(stb.st_rdev)),
+ !conf_test_metadata(tst->ss->name, (pol = devid_policy(rdev)),
tst->ss->match_home(tst, c->homehost) == 1)) {
if (report_mismatch)
pr_err("%s has metadata type %s for which auto-assembly is disabled\n",
@@ -484,7 +477,7 @@ static int select_devices(struct mddev_dev *devlist,
/* Collect domain information from members only */
if (tmpdev && tmpdev->used == 1) {
if (!pol)
- pol = devid_policy(stb.st_rdev);
+ pol = devid_policy(rdev);
domain_merge(&domains, pol, tst?tst->ss->name:NULL);
}
dev_policy_free(pol);
diff --git a/Build.c b/Build.c
index 11ba12f..25aa4ea 100644
--- a/Build.c
+++ b/Build.c
@@ -42,6 +42,7 @@ int Build(char *mddev, struct mddev_dev *devlist,
*/
int i;
struct stat stb;
+ dev_t rdev;
int subdevs = 0, missing_disks = 0;
struct mddev_dev *dv;
int bitmap_fd;
@@ -126,8 +127,8 @@ int Build(char *mddev, struct mddev_dev *devlist,
array.nr_disks = s->raiddisks;
array.raid_disks = s->raiddisks;
array.md_minor = 0;
- if (fstat(mdfd, &stb) == 0)
- array.md_minor = minor(stb.st_rdev);
+ if (fstat_md_is_blkdev(mdfd, mddev, &rdev) == 0)
+ array.md_minor = minor(rdev);
array.not_persistent = 1;
array.state = 0; /* not clean, but no errors */
if (s->assume_clean)
diff --git a/Create.c b/Create.c
index 6ca0924..0f57257 100644
--- a/Create.c
+++ b/Create.c
@@ -89,8 +89,8 @@ int Create(struct supertype *st, char *mddev,
char *maxdisc = NULL;
int dnum, raid_disk_num;
struct mddev_dev *dv;
+ dev_t rdev;
int fail = 0, warn = 0;
- struct stat stb;
int first_missing = subdevs * 2;
int second_missing = subdevs * 2;
int missing_disks = 0;
@@ -325,11 +325,8 @@ int Create(struct supertype *st, char *mddev,
dname, strerror(errno));
exit(2);
}
- if (fstat(dfd, &stb) != 0 ||
- (stb.st_mode & S_IFMT) != S_IFBLK) {
+ if (fstat_md_is_blkdev(dfd, dname, NULL)) {
close(dfd);
- pr_err("%s is not a block device\n",
- dname);
exit(2);
}
close(dfd);
@@ -640,8 +637,8 @@ int Create(struct supertype *st, char *mddev,
* with, but it chooses to trust me instead. Sigh
*/
info.array.md_minor = 0;
- if (fstat(mdfd, &stb) == 0)
- info.array.md_minor = minor(stb.st_rdev);
+ if (fstat_md_is_blkdev(mdfd, mddev, &rdev) == 0)
+ info.array.md_minor = minor(rdev);
info.array.not_persistent = 0;
if (((s->level == 4 || s->level == 5) &&
@@ -840,7 +837,6 @@ int Create(struct supertype *st, char *mddev,
for (dnum = 0, raid_disk_num = 0, dv = devlist; dv;
dv = (dv->next) ? (dv->next) : moved_disk, dnum++) {
int fd;
- struct stat stb2;
struct mdinfo *inf = &infos[dnum];
if (dnum >= total_slots)
@@ -896,9 +892,10 @@ int Create(struct supertype *st, char *mddev,
dv->devname);
goto abort_locked;
}
- fstat(fd, &stb2);
- inf->disk.major = major(stb2.st_rdev);
- inf->disk.minor = minor(stb2.st_rdev);
+ if (fstat_md_is_blkdev(fd, dv->devname, &rdev))
+ return 1;
+ inf->disk.major = major(rdev);
+ inf->disk.minor = minor(rdev);
}
if (fd >= 0)
remove_partitions(fd);
@@ -919,8 +916,8 @@ int Create(struct supertype *st, char *mddev,
if (!have_container) {
/* getinfo_super might have lost these ... */
- inf->disk.major = major(stb2.st_rdev);
- inf->disk.minor = minor(stb2.st_rdev);
+ inf->disk.major = major(rdev);
+ inf->disk.minor = minor(rdev);
}
break;
case 2:
diff --git a/Grow.c b/Grow.c
index c6967ed..5949db0 100755
--- a/Grow.c
+++ b/Grow.c
@@ -109,7 +109,7 @@ int Grow_Add_device(char *devname, int fd, char *newdev)
*/
struct mdinfo info;
- struct stat stb;
+ dev_t rdev;
int nfd, fd2;
int d, nd;
struct supertype *st = NULL;
@@ -145,9 +145,7 @@ int Grow_Add_device(char *devname, int fd, char *newdev)
free(st);
return 1;
}
- fstat(nfd, &stb);
- if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- pr_err("%s is not a block device!\n", newdev);
+ if (fstat_md_is_blkdev(nfd, newdev, &rdev)) {
close(nfd);
free(st);
return 1;
@@ -198,8 +196,8 @@ int Grow_Add_device(char *devname, int fd, char *newdev)
*/
info.disk.number = d;
- info.disk.major = major(stb.st_rdev);
- info.disk.minor = minor(stb.st_rdev);
+ info.disk.major = major(rdev);
+ info.disk.minor = minor(rdev);
info.disk.raid_disk = d;
info.disk.state = (1 << MD_DISK_SYNC) | (1 << MD_DISK_ACTIVE);
st->ss->update_super(st, &info, "linear-grow-new", newdev,
diff --git a/Incremental.c b/Incremental.c
index 28f1f77..6512af8 100644
--- a/Incremental.c
+++ b/Incremental.c
@@ -87,6 +87,7 @@ int Incremental(struct mddev_dev *devlist, struct context *c,
* start the array (auto-readonly).
*/
struct stat stb;
+ dev_t rdev;
struct mdinfo info, dinfo;
struct mdinfo *sra = NULL, *d;
struct mddev_ident *match;
@@ -175,21 +176,11 @@ int Incremental(struct mddev_dev *devlist, struct context *c,
/* 2/ Find metadata, reject if none appropriate (check
* version/name from args) */
- if (fstat(dfd, &stb) < 0) {
- if (c->verbose >= 0)
- pr_err("fstat failed for %s: %s.\n",
- devname, strerror(errno));
- goto out;
- }
- if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- if (c->verbose >= 0)
- pr_err("%s is not a block device.\n",
- devname);
+ if (fstat_md_is_blkdev(dfd, devname, &rdev))
goto out;
- }
- dinfo.disk.major = major(stb.st_rdev);
- dinfo.disk.minor = minor(stb.st_rdev);
+ dinfo.disk.major = major(rdev);
+ dinfo.disk.minor = minor(rdev);
policy = disk_policy(&dinfo);
have_target = policy_check_path(&dinfo, &target_array);
@@ -341,8 +332,8 @@ int Incremental(struct mddev_dev *devlist, struct context *c,
}
dinfo = info;
- dinfo.disk.major = major(stb.st_rdev);
- dinfo.disk.minor = minor(stb.st_rdev);
+ dinfo.disk.major = major(rdev);
+ dinfo.disk.minor = minor(rdev);
if (add_disk(mdfd, st, &info, &dinfo) != 0) {
pr_err("failed to add %s to new array %s: %s.\n",
devname, chosen_name, strerror(errno));
@@ -444,8 +435,8 @@ int Incremental(struct mddev_dev *devlist, struct context *c,
goto out_unlock;
}
}
- info.disk.major = major(stb.st_rdev);
- info.disk.minor = minor(stb.st_rdev);
+ info.disk.major = major(rdev);
+ info.disk.minor = minor(rdev);
/* add disk needs to know about containers */
if (st->ss->external)
sra->array.level = LEVEL_CONTAINER;
@@ -868,12 +859,12 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
* Return 0 on success, or some exit code on failure, probably 1.
*/
int rv = 1;
- struct stat stb;
+ dev_t rdev;
struct map_ent *mp, *map = NULL;
struct mdinfo *chosen = NULL;
int dfd = *dfdp;
- if (fstat(dfd, &stb) != 0)
+ if (fstat_md_is_blkdev(dfd, devname, &rdev))
return 1;
/*
@@ -1045,8 +1036,8 @@ static int array_try_spare(char *devname, int *dfdp, struct dev_policy *pol,
devlist.writemostly = FlagDefault;
devlist.failfast = FlagDefault;
devlist.devname = chosen_devname;
- sprintf(chosen_devname, "%d:%d", major(stb.st_rdev),
- minor(stb.st_rdev));
+ sprintf(chosen_devname, "%d:%d", major(rdev),
+ minor(rdev));
devlist.disposition = 'a';
close(dfd);
*dfdp = -1;
diff --git a/Manage.c b/Manage.c
index 8966e33..69c68ba 100644
--- a/Manage.c
+++ b/Manage.c
@@ -1515,7 +1515,7 @@ int Manage_subdevs(char *devname, int fd,
struct stat stb;
tfd = dev_open(dv->devname, O_RDONLY);
if (tfd >= 0) {
- fstat(tfd, &stb);
+ fstat_md_is_blkdev(tfd, dv->devname, &rdev);
close(tfd);
} else {
int open_err = errno;
diff --git a/bitmap.c b/bitmap.c
index 16a6b73..2cf7938 100644
--- a/bitmap.c
+++ b/bitmap.c
@@ -183,7 +183,6 @@ static int
bitmap_file_open(char *filename, struct supertype **stp, int node_num)
{
int fd;
- struct stat stb;
struct supertype *st = *stp;
fd = open(filename, O_RDONLY|O_DIRECT);
@@ -193,14 +192,7 @@ bitmap_file_open(char *filename, struct supertype **stp, int node_num)
return -1;
}
- if (fstat(fd, &stb) < 0) {
- pr_err("failed to determine bitmap file/device type: %s\n",
- strerror(errno));
- close(fd);
- return -1;
- }
-
- if ((stb.st_mode & S_IFMT) == S_IFBLK) {
+ if (fstat_md_is_blkdev(fd, filename, NULL) == 0) {
/* block device, so we are probably after an internal bitmap */
if (!st)
st = guess_super(fd);
diff --git a/mdadm.h b/mdadm.h
index 1bbacfe..1d63932 100644
--- a/mdadm.h
+++ b/mdadm.h
@@ -1433,6 +1433,7 @@ extern int check_raid(int fd, char *name);
extern int check_partitions(int fd, char *dname,
unsigned long long freesize,
unsigned long long size);
+extern int fstat_md_is_blkdev(int fd, char *devname, dev_t *rdev);
extern int get_mdp_major(void);
extern int get_maj_min(char *dev, int *major, int *minor);
diff --git a/super-intel.c b/super-intel.c
index 0aed57c..c16edfb 100644
--- a/super-intel.c
+++ b/super-intel.c
@@ -6557,7 +6557,7 @@ count_volumes_list(struct md_list *devlist, char *homehost,
for (tmpdev = devlist; tmpdev; tmpdev = tmpdev->next) {
char *devname = tmpdev->devname;
- struct stat stb;
+ dev_t rdev;
struct supertype *tst;
int dfd;
if (tmpdev->used > 1)
@@ -6573,14 +6573,7 @@ count_volumes_list(struct md_list *devlist, char *homehost,
dprintf("cannot open device %s: %s\n",
devname, strerror(errno));
tmpdev->used = 2;
- } else if (fstat(dfd, &stb)< 0) {
- /* Impossible! */
- dprintf("fstat failed for %s: %s\n",
- devname, strerror(errno));
- tmpdev->used = 2;
- } else if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- dprintf("%s is not a block device.\n",
- devname);
+ } else if (fstat_md_is_blkdev(dfd, devname, &rdev)) {
tmpdev->used = 2;
} else if (must_be_container(dfd)) {
struct supertype *cst;
@@ -6602,7 +6595,7 @@ count_volumes_list(struct md_list *devlist, char *homehost,
if (cst)
cst->ss->free_super(cst);
} else {
- tmpdev->st_rdev = stb.st_rdev;
+ tmpdev->st_rdev = rdev;
if (tst->ss->load_super(tst,dfd, NULL)) {
dprintf("no RAID superblock on %s\n",
devname);
diff --git a/util.c b/util.c
index 21a63c9..6294fff 100644
--- a/util.c
+++ b/util.c
@@ -706,6 +706,23 @@ int check_raid(int fd, char *name)
return 1;
}
+int fstat_md_is_blkdev(int fd, char *devname, dev_t *rdev)
+{
+ struct stat stb;
+
+ if (fstat(fd, &stb) != 0) {
+ pr_err("fstat failed for %s: %s\n", devname, strerror(errno));
+ return 1;
+ }
+ if ((S_IFMT & stb.st_mode) != S_IFBLK) {
+ pr_err("%s is not a block device.\n", devname);
+ return 1;
+ }
+ if (rdev)
+ *rdev = stb.st_rdev;
+ return 0;
+}
+
int ask(char *mesg)
{
char *add = "";
--
2.10.2
--
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