Refactor check_label().
Make it be static at first, this is a preparation step since we'll remove
btrfslabel.[c|h] and move those functions at them to utils.[c|h], we can do
pre-checking against the input label string with it.
Also, fix the input lable length verfication from BTRFS_LABEL_SIZE to
BTRFS_LABEL_SIZE - 1.
Signed-off-by: Jie Liu <jeff.liu@xxxxxxxxxx>
CC: David Sterba <dsterba@xxxxxxx>
CC: Gene Czarcinski <gene@xxxxxxxxx>
---
utils.c | 8 ++++++--
utils.h | 1 -
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/utils.c b/utils.c
index d59bca3..034da8f 100644
--- a/utils.c
+++ b/utils.c
@@ -1122,17 +1122,21 @@ char *pretty_sizes(u64 size)
-1 if the label is too long
-2 if the label contains an invalid character
*/
-int check_label(char *input)
+static int check_label(char *input)
{
int i;
int len = strlen(input);
- if (len > BTRFS_LABEL_SIZE) {
+ if (len > BTRFS_LABEL_SIZE - 1) {
+ fprintf(stderr, "ERROR: Label %s is too long (max %d)\n",
+ input, BTRFS_LABEL_SIZE - 1);
return -1;
}
for (i = 0; i < len; i++) {
if (input[i] == '/' || input[i] == '\\') {
+ fprintf(stderr, "ERROR: Label %s contains invalid "
+ "characters\n", input);
return -2;
}
}
diff --git a/utils.h b/utils.h
index 8750f28..a0b782b 100644
--- a/utils.h
+++ b/utils.h
@@ -42,7 +42,6 @@ int check_mounted_where(int fd, const char *file, char *where, int size,
int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
int super_offset);
char *pretty_sizes(u64 size);
-int check_label(char *input);
int get_mountpt(char *dev, char *mntpt, size_t size);
int btrfs_scan_block_devices(int run_ioctl);
--
1.7.9.5
--
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