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btrfs-progs: cmd_start_replace() to use test_dev_for_mkfs()

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test_dev_for_mkfs() is a common place where
we check if a device is fit for the btrfs use.
cmd_start_replace() should make use of test_dev_for_mkfs(),
and here the test_dev_for_mkfs() is further enhanced
to fit the cmd_start_replace() needs.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Anand Jain 2013-07-26 01:35:27 +08:00 committed by David Sterba
parent bbe9df154b
commit 689ad3e362
2 changed files with 14 additions and 28 deletions
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32
cmds-replace.c
View File

@ -137,13 +137,12 @@ static int cmd_start_replace(int argc, char **argv)
char *dstdev; char *dstdev;
int avoid_reading_from_srcdev = 0; int avoid_reading_from_srcdev = 0;
int force_using_targetdev = 0; int force_using_targetdev = 0;
u64 total_devs = 1;
struct btrfs_fs_devices *fs_devices_mnt = NULL;
struct stat st; struct stat st;
u64 dstdev_block_count; u64 dstdev_block_count;
int do_not_background = 0; int do_not_background = 0;
int mixed = 0; int mixed = 0;
DIR *dirstream = NULL; DIR *dirstream = NULL;
char estr[100]; /* check test_dev_for_mkfs() for error string size*/
while ((c = getopt(argc, argv, "Brf")) != -1) { while ((c = getopt(argc, argv, "Brf")) != -1) {
switch (c) { switch (c) {
@ -265,15 +264,9 @@ static int cmd_start_replace(int argc, char **argv)
start_args.start.srcdevid = 0; start_args.start.srcdevid = 0;
} }
ret = check_mounted(dstdev); ret = test_dev_for_mkfs(dstdev, force_using_targetdev, estr);
if (ret < 0) { if (ret) {
fprintf(stderr, "Error checking %s mount status\n", dstdev); fprintf(stderr, "%s", estr);
goto leave_with_error;
}
if (ret == 1) {
fprintf(stderr,
"Error, target device %s is in use and currently mounted!\n",
dstdev);
goto leave_with_error; goto leave_with_error;
} }
fddstdev = open(dstdev, O_RDWR); fddstdev = open(dstdev, O_RDWR);
@ -281,23 +274,6 @@ static int cmd_start_replace(int argc, char **argv)
fprintf(stderr, "Unable to open %s\n", dstdev); fprintf(stderr, "Unable to open %s\n", dstdev);
goto leave_with_error; goto leave_with_error;
} }
ret = btrfs_scan_one_device(fddstdev, dstdev, &fs_devices_mnt,
&total_devs, BTRFS_SUPER_INFO_OFFSET);
if (ret >= 0 && !force_using_targetdev) {
fprintf(stderr,
"Error, target device %s contains filesystem, use '-f' to force overwriting.\n",
dstdev);
goto leave_with_error;
}
ret = fstat(fddstdev, &st);
if (ret) {
fprintf(stderr, "Error: Unable to stat '%s'\n", dstdev);
goto leave_with_error;
}
if (!S_ISBLK(st.st_mode)) {
fprintf(stderr, "Error: '%s' is not a block device\n", dstdev);
goto leave_with_error;
}
strncpy((char *)start_args.start.tgtdev_name, dstdev, strncpy((char *)start_args.start.tgtdev_name, dstdev,
BTRFS_DEVICE_PATH_NAME_MAX); BTRFS_DEVICE_PATH_NAME_MAX);
if (btrfs_prepare_device(fddstdev, dstdev, 1, &dstdev_block_count, 0, if (btrfs_prepare_device(fddstdev, dstdev, 1, &dstdev_block_count, 0,

10
utils.c
View File

@ -1807,6 +1807,7 @@ int test_dev_for_mkfs(char *file, int force_overwrite, char *estr)
{ {
int ret, fd; int ret, fd;
size_t sz = 100; size_t sz = 100;
struct stat st;
ret = is_swap_device(file); ret = is_swap_device(file);
if (ret < 0) { if (ret < 0) {
@ -1841,6 +1842,15 @@ int test_dev_for_mkfs(char *file, int force_overwrite, char *estr)
strerror(errno)); strerror(errno));
return 1; return 1;
} }
if (fstat(fd, &st)) {
snprintf(estr, sz, "unable to stat %s: %s\n", file,
strerror(errno));
return 1;
}
if (!S_ISBLK(st.st_mode)) {
fprintf(stderr, "'%s' is not a block device\n", file);
return 1;
}
close(fd); close(fd);
return 0; return 0;
} }