Goutham Pacha Ravi has uploaded this change for review. ( https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1237448?usp=email ) Change subject: Allow /0 CIDR prefix in export client blocks ...................................................................... Allow /0 CIDR prefix in export client blocks The lexer regex patterns for CIDR suffixes reject prefix length 0 because they require the first digit to be [1-9]. This prevents valid CIDR notation like 0.0.0.0/0 and ::/0 (RFC 4632, RFC 4291) from being used in export client blocks to match all addresses in an address family. Fix the regex to accept /0 while still disallowing leading zeros. Also fix undefined behavior in cidr_contains_ip() for IPv4 with mask=0, where a 32-bit shift of an int is performed (UB in C). Add test cases for /0 parsing and containment. Change-Id: Ibd5364266e7a5afe1b2749f9a5fc2c1dc7478ba3 Fixes: https://github.com/nfs-ganesha/nfs-ganesha/issues/1396 Signed-off-by: Goutham Pacha Ravi <gouthampravi(a)gmail.com&gt; --- M src/config_parsing/conf_lex.l M src/support/ip_utils.c M src/test/test_cidr.c 3 files changed, 11 insertions(+), 2 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/48/1237448/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1237448?usp=email To unsubscribe, or for help writing mail filters, visit https://review.gerrithub.io/settings?usp=email Gerrit-MessageType: newchange Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Change-Id: Ibd5364266e7a5afe1b2749f9a5fc2c1dc7478ba3 Gerrit-Change-Number: 1237448 Gerrit-PatchSet: 1 Gerrit-Owner: Goutham Pacha Ravi <gouthampravi(a)gmail.com&gt;