From 4d1636273b5333ed88ffd051c365490c73a380da Mon Sep 17 00:00:00 2001 From: Pranith Kumar K Date: Tue, 26 Jun 2018 15:58:02 +0530 Subject: [PATCH 301/305] storage/posix: Fix posix_symlinks_match() Upstream patch: https://review.gluster.org/20399 1) snprintf into linkname_expected should happen with PATH_MAX 2) comparison should happen with linkname_actual with complete string linkname_expected BUG: 1558989 Change-Id: Ic3b3c362dc6c69c046b9a13e031989be47ecff14 Signed-off-by: Pranith Kumar K Reviewed-on: https://code.engineering.redhat.com/gerrit/142486 Tested-by: RHGS Build Bot Reviewed-by: Sunil Kumar Heggodu Gopala Acharya --- tests/bugs/replicate/bug-1477169-entry-selfheal-rename.t | 15 ++++++++++----- xlators/storage/posix/src/posix.c | 16 +++++++++++++--- 2 files changed, 23 insertions(+), 8 deletions(-) diff --git a/tests/bugs/replicate/bug-1477169-entry-selfheal-rename.t b/tests/bugs/replicate/bug-1477169-entry-selfheal-rename.t index 465800b..bb858a8 100644 --- a/tests/bugs/replicate/bug-1477169-entry-selfheal-rename.t +++ b/tests/bugs/replicate/bug-1477169-entry-selfheal-rename.t @@ -13,10 +13,10 @@ EXPECT_WITHIN $CHILD_UP_TIMEOUT "1" afr_child_up_status $V0 0 EXPECT_WITHIN $CHILD_UP_TIMEOUT "1" afr_child_up_status $V0 1 EXPECT_WITHIN $CHILD_UP_TIMEOUT "1" afr_child_up_status $V0 2 -TEST mkdir -p $M0/d1/dir $M0/d2 +TEST mkdir -p $M0/d1/dir012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 $M0/d2 gfid_d1=$(gf_get_gfid_xattr $B0/${V0}0/d1) gfid_d2=$(gf_get_gfid_xattr $B0/${V0}0/d2) -gfid_dir=$(gf_get_gfid_xattr $B0/${V0}0/d1/dir) +gfid_dir=$(gf_get_gfid_xattr $B0/${V0}0/d1/dir012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789) gfid_str_d1=$(gf_gfid_xattr_to_str $gfid_d1) gfid_str_d2=$(gf_gfid_xattr_to_str $gfid_d2) @@ -24,7 +24,7 @@ gfid_str_d3=$(gf_gfid_xattr_to_str $gfid_dir) # Kill 3rd brick and rename the dir from mount. TEST kill_brick $V0 $H0 $B0/${V0}2 -TEST mv $M0/d1/dir $M0/d2 +TEST mv $M0/d1/dir012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 $M0/d2 # Bring it back and trigger heal. TEST $CLI volume start $V0 force @@ -38,10 +38,15 @@ EXPECT_WITHIN $CHILD_UP_TIMEOUT "1" afr_child_up_status_in_shd $V0 2 TEST $CLI volume heal $V0 EXPECT_WITHIN $HEAL_TIMEOUT "^0$" get_pending_heal_count $V0 -# Check that .glusterfs symlink for dir exists and points to d2/dir +# Check that .glusterfs symlink for dir exists and points to d2/dir012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 TEST linkname=$(readlink $B0/${V0}2/.glusterfs/${gfid_str_d3:0:2}/${gfid_str_d3:2:2}/$gfid_str_d3) -EXPECT "dir" basename $linkname +EXPECT "dir012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" basename $linkname TEST parent_dir_gfid_str=$(echo $linkname|cut -d / -f5) EXPECT $gfid_str_d2 echo $parent_dir_gfid_str +TEST rmdir $M0/d2/dir012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789 + +TEST ! stat $B0/${V0}0/.glusterfs/${gfid_str_d3:0:2}/${gfid_str_d3:2:2}/$gfid_str_d3 +TEST ! stat $B0/${V0}1/.glusterfs/${gfid_str_d3:0:2}/${gfid_str_d3:2:2}/$gfid_str_d3 +TEST ! stat $B0/${V0}2/.glusterfs/${gfid_str_d3:0:2}/${gfid_str_d3:2:2}/$gfid_str_d3 cleanup; diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c index 6aa64f9..af54882 100644 --- a/xlators/storage/posix/src/posix.c +++ b/xlators/storage/posix/src/posix.c @@ -125,17 +125,27 @@ posix_symlinks_match (xlator_t *this, loc_t *loc, uuid_t gfid) handle_size = POSIX_GFID_HANDLE_SIZE(priv->base_path_length); dir_handle = alloca0 (handle_size); - snprintf (linkname_expected, handle_size, "../../%02x/%02x/%s/%s", + snprintf (linkname_expected, PATH_MAX, "../../%02x/%02x/%s/%s", loc->pargfid[0], loc->pargfid[1], uuid_utoa (loc->pargfid), loc->name); MAKE_HANDLE_GFID_PATH (dir_handle, this, gfid, NULL); len = sys_readlink (dir_handle, linkname_actual, PATH_MAX); - if (len < 0) + if (len < 0 || len == PATH_MAX) { + if (len == PATH_MAX) { + errno = EINVAL; + } + + if (errno != ENOENT) { + gf_msg (this->name, GF_LOG_ERROR, errno, + P_MSG_LSTAT_FAILED, "readlink[%s] failed", + dir_handle); + } goto out; + } linkname_actual[len] = '\0'; - if (!strncmp (linkname_actual, linkname_expected, handle_size)) + if (!strcmp (linkname_actual, linkname_expected)) ret = _gf_true; out: -- 1.8.3.1