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author | Piotr Pawlow <pp@siedziba.pl> | 2017-08-11 15:31:56 +0200 |
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committer | David Sterba <dsterba@suse.com> | 2017-09-25 15:17:00 +0200 |
commit | 334d83053a593e0adeea7f958a9811381fb458fc (patch) | |
tree | ff51ab06cadb8684984406f5cc99cc554eb762bc | |
parent | c859336f470d1fadb46134b30d966b3588f1d44e (diff) |
btrfs-progs: image: add a function to check if generated filename suffix is valid
Author: Piotr Pawlow <pp@siedziba.pl>
Signed-off-by: David Sterba <dsterba@suse.com>
-rw-r--r-- | image/main.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/image/main.c b/image/main.c index b7e06885..c743cb4d 100644 --- a/image/main.c +++ b/image/main.c @@ -431,6 +431,22 @@ static void find_collision_calc_suffix(unsigned long current_crc, suffix[i] = (desired_crc >> i * 8) & 0xFF; } +/* + * Check if suffix is valid according to our file name conventions + */ +static int find_collision_is_suffix_valid(const char *suffix) +{ + int i; + char c; + + for (i = 0; i < 4; i++) { + c = suffix[i]; + if (c < ' ' || c > 126 || c == '/') + return 0; + } + return 1; +} + static int find_collision_brute_force(struct name *val, u32 name_len) { unsigned long checksum; |