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Illumos #3522

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3522 zfs module should not allow uninitialized variables
Reviewed by: Sebastien Roy <seb@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Garrett D'Amore <garrett@damore.org>

References:
  https://www.illumos.org/issues/3522
  illumos/illumos-gate@d5285cae91

Ported-by: Richard Yao <ryao@gentoo.org>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>

Porting notes:

1. ZFSOnLinux had already addressed many of these issues because of
   its use of -Wall. However, the manner in which they were addressed
   differed. The illumos fixes replace the ones previously made in
   ZFSOnLinux to reduce code differences.

2. Part of the upstream patch made a small change to arc.c that might
   address zfsonlinux/zfs#1334.

3. The initialization of aclsize in zfs_log_create() differs because
   vsecp is a NULL pointer on ZFSOnLinux.

4. The changes to zfs_register_callbacks() were dropped because it
   has diverged and needs to be resynced.
This commit is contained in:
George Wilson
2013-02-10 22:21:05 -08:00
committed by Brian Behlendorf
parent a35beedfb3
commit a117a6d66e
12 changed files with 31 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files
module/zfs/zfs_log.c
+1 -2
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@@ -239,10 +239,10 @@ zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
itx_t *itx;
lr_create_t *lr;
lr_acl_create_t *lracl;
xvattr_t *xvap = (xvattr_t *)vap;
size_t aclsize = 0;
size_t xvatsize = 0;
size_t txsize;
xvattr_t *xvap = (xvattr_t *)vap;
void *end;
size_t lrsize;
size_t namesize = strlen(name) + 1;
@@ -269,7 +269,6 @@ zfs_log_create(zilog_t *zilog, dmu_tx_t *tx, uint64_t txtype,
txsize = sizeof (*lr) + namesize + fuidsz + xvatsize;
lrsize = sizeof (*lr);
} else {
aclsize = (vsecp) ? vsecp->vsa_aclentsz : 0;
txsize =
sizeof (lr_acl_create_t) + namesize + fuidsz +
ZIL_ACE_LENGTH(aclsize) + xvatsize;