[NFS-Ganesha-Devel] [M] Change in ...nfs-ganesha[next]: Fix getgrouplist return value handling for NSS and SSSD

Attention is currently required from: Frank Filz. Hello Frank Filz, I'd like you to do a code review. Please visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1236495?usp=email to review the following change. Change subject: Fix getgrouplist return value handling for NSS and SSSD ...................................................................... Fix getgrouplist return value handling for NSS and SSSD The issue: getgrouplist() (NSS) and sss_nss_getgrouplist_timeout() (SSSD) have different return value semantics: - NSS: returns -1 on buffer too small, or >=0 (number of groups) on success - SSSD: returns 0 on success, ERANGE on buffer too small, or errno on error This caused problems because SSSD's positive errno values (ERANGE=34, ETIMEDOUT=110) overlap with NSS's success values (number of groups). Solution: Normalize return values in pwnam_wrappers__getgrouplist(): - NSS: Convert >=0 (success) to 0 - SSSD: Convert ERANGE (buffer too small) to -1 - Result: -1 (retry), 0 (success), >0 (error) Update my_getgrouplist_alloc() to handle normalized values: - ret == -1 and errno ERANGE: Buffer too small, retry with correct size - ret == -1: Failure - ret >= 0: Success, continue Change-Id: I1ef2944172054e5051305049fe33192724ea7e51 Signed-off-by: Lior Suliman <liorsu(a)gmail.com&gt; --- M src/idmapper/pwnam_wrappers.c M src/idmapper/sss_nss_idmap.c M src/support/uid2grp.c 3 files changed, 72 insertions(+), 28 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/95/1236495/1 -- To view, visit https://review.gerrithub.io/c/ffilz/nfs-ganesha/+/1236495?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: I1ef2944172054e5051305049fe33192724ea7e51 Gerrit-Change-Number: 1236495 Gerrit-PatchSet: 1 Gerrit-Owner: Lior Suliman <liorsu(a)google.com&gt; Gerrit-Reviewer: Frank Filz <ffilzlnx(a)mindspring.com&gt; Gerrit-Attention: Frank Filz <ffilzlnx(a)mindspring.com&gt;