In some cases we want to accept a range of type [a..a]. Add a new function to do the 'a < b' check for the caller and use it.
Signed-off-by: David Sterba <[email protected]> --- cmds-balance.c | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) diff --git a/cmds-balance.c b/cmds-balance.c index 0a1bf0cd0699..1fd8d2018b7a 100644 --- a/cmds-balance.c +++ b/cmds-balance.c @@ -128,9 +128,10 @@ static int parse_range(const char *range, u64 *start, u64 *end) return 1; } - if (*start >= *end) { - fprintf(stderr, "Range %llu..%llu doesn't make " - "sense\n", (unsigned long long)*start, + if (*start > *end) { + fprintf(stderr, + "ERROR: range %llu..%llu doesn't make sense\n", + (unsigned long long)*start, (unsigned long long)*end); return 1; } @@ -141,6 +142,25 @@ static int parse_range(const char *range, u64 *start, u64 *end) return 1; } +/* + * Parse range and check if start < end + */ +static int parse_range_strict(const char *range, u64 *start, u64 *end) +{ + if (parse_range(range, start, end) == 0) { + if (*start >= *end) { + fprintf(stderr, + "ERROR: range %llu..%llu not allowed\n", + (unsigned long long)*start, + (unsigned long long)*end); + return 1; + } + return 0; + } + + return 1; +} + static int parse_filters(char *filters, struct btrfs_balance_args *args) { char *this_char; @@ -198,7 +218,7 @@ static int parse_filters(char *filters, struct btrfs_balance_args *args) "an argument\n"); return 1; } - if (parse_range(value, &args->pstart, &args->pend)) { + if (parse_range_strict(value, &args->pstart, &args->pend)) { fprintf(stderr, "Invalid drange argument\n"); return 1; } @@ -209,7 +229,7 @@ static int parse_filters(char *filters, struct btrfs_balance_args *args) "an argument\n"); return 1; } - if (parse_range(value, &args->vstart, &args->vend)) { + if (parse_range_strict(value, &args->vstart, &args->vend)) { fprintf(stderr, "Invalid vrange argument\n"); return 1; } -- 2.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
