| Summary: | lockf function doesn't comply with Single Unix Specification | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 2.1 | Reporter: | Unai Uribarri Rodríguez <uribarri_u> |
| Component: | kernel | Assignee: | Jim Paradis <jparadis> |
| Status: | CLOSED WONTFIX | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 2.1 | CC: | peterm |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-06-08 21:39:05 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | ||
The glibc version is glibc-2.2.4-26. glibc lockf just calls fcntl in the kernel. if we change this, we change behavior to userspace, which is something we don't want within a stable product release. It isn't needed to change the kernel. You can call traslate the negative length
in lockf to a negative start and a positive length to fcntl, for example:
struct flock flock;
/* ... */
if (len < 0)
{
flock.l_start = len
flock.l_len = -len;
}
else
{
flock.l_start = 0;
flock.l_len = len;
}
RHEL2.1 is currently accepting only critical security fixes. This issue is outside the current scope of support. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.4) Gecko/20030624 Description of problem: lockf returns EINVAL if the third argument of the function lockf, len, is negative, if running a kernel < 2.4.21 (currently, I'm using redhat kernel-2.4.9-e.3) All the versions of the Single Unix Specification says that, when len is negative, lockf must affect "the preceding bytes up to but not including the current offset". Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Call lockf with a negative len argument 2. 3. Actual Results: lockf return -1, errno==EINVAL. Expected Results: lockf must return 0. Additional info: