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btrfs-progs: fi usage: improved error handling in load_device_info

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Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-08-26 12:53:31 +02:00
parent 5b16054958
commit 7febbc9efe
1 changed files with 16 additions and 4 deletions
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20
cmds-fi-usage.c
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@ -535,7 +535,11 @@ static int load_device_info(int fd, struct device_info **device_info_ptr,
}
for (i = 0, ndevs = 0 ; i <= fi_args.max_id ; i++) {
BUG_ON(ndevs >= fi_args.num_devices);
if (ndevs >= fi_args.num_devices) {
error("unexpected number of devices: %d >= %llu", ndevs,
(unsigned long long)fi_args.num_devices);
goto out;
}
memset(&dev_info, 0, sizeof(dev_info));
ret = get_device_info(fd, i, &dev_info);
@ -543,8 +547,7 @@ static int load_device_info(int fd, struct device_info **device_info_ptr,
continue;
if (ret) {
error("cannot get info about device devid=%d", i);
free(info);
return ret;
goto out;
}
info[ndevs].devid = dev_info.devid;
@ -559,7 +562,12 @@ static int load_device_info(int fd, struct device_info **device_info_ptr,
++ndevs;
}
BUG_ON(ndevs != fi_args.num_devices);
if (ndevs != fi_args.num_devices) {
error("unexpected number of devices: %d != %llu", ndevs,
(unsigned long long)fi_args.num_devices);
goto out;
}
qsort(info, fi_args.num_devices,
sizeof(struct device_info), cmp_device_info);
@ -567,6 +575,10 @@ static int load_device_info(int fd, struct device_info **device_info_ptr,
*device_info_ptr = info;
return 0;
out:
free(info);
return ret;
}
int load_chunk_and_device_info(int fd, struct chunk_info **chunkinfo,