qemu-kvm/SOURCES/kvm-virtiofsd-passthrough_ll-cleanup-getxattr-listxattr.patch

155 lines
4.1 KiB
Diff

From f93ea308351cbe2630d7ecf637c3b69894d84a11 Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Tue, 3 Mar 2020 18:43:13 +0000
Subject: [PATCH 17/18] virtiofsd: passthrough_ll: cleanup getxattr/listxattr
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20200303184314.155564-7-dgilbert@redhat.com>
Patchwork-id: 94125
O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH 6/7] virtiofsd: passthrough_ll: cleanup getxattr/listxattr
Bugzilla: 1797064
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>
RH-Acked-by: Ján Tomko <jtomko@redhat.com>
From: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
This is a cleanup patch to simplify the following xattr fix and
there is no functional changes.
- Move memory allocation to head of the function
- Unify fgetxattr/flistxattr call for both size == 0 and
size != 0 case
- Remove redundant lo_inode_put call in error path
(Note: second call is ignored now since @inode is already NULL)
Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Message-Id: <20200227055927.24566-2-misono.tomohiro@jp.fujitsu.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit 16e15a73089102c3d8846792d514e769300fcc3c)
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tools/virtiofsd/passthrough_ll.c | 54 ++++++++++++++++------------------------
1 file changed, 22 insertions(+), 32 deletions(-)
diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c
index c635fc8..50c7273 100644
--- a/tools/virtiofsd/passthrough_ll.c
+++ b/tools/virtiofsd/passthrough_ll.c
@@ -2199,34 +2199,30 @@ static void lo_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
goto out;
}
+ if (size) {
+ value = malloc(size);
+ if (!value) {
+ goto out_err;
+ }
+ }
+
sprintf(procname, "%i", inode->fd);
fd = openat(lo->proc_self_fd, procname, O_RDONLY);
if (fd < 0) {
goto out_err;
}
+ ret = fgetxattr(fd, name, value, size);
+ if (ret == -1) {
+ goto out_err;
+ }
if (size) {
- value = malloc(size);
- if (!value) {
- goto out_err;
- }
-
- ret = fgetxattr(fd, name, value, size);
- if (ret == -1) {
- goto out_err;
- }
saverr = 0;
if (ret == 0) {
goto out;
}
-
fuse_reply_buf(req, value, ret);
} else {
- ret = fgetxattr(fd, name, NULL, 0);
- if (ret == -1) {
- goto out_err;
- }
-
fuse_reply_xattr(req, ret);
}
out_free:
@@ -2242,7 +2238,6 @@ out_free:
out_err:
saverr = errno;
out:
- lo_inode_put(lo, &inode);
fuse_reply_err(req, saverr);
goto out_free;
}
@@ -2277,34 +2272,30 @@ static void lo_listxattr(fuse_req_t req, fuse_ino_t ino, size_t size)
goto out;
}
+ if (size) {
+ value = malloc(size);
+ if (!value) {
+ goto out_err;
+ }
+ }
+
sprintf(procname, "%i", inode->fd);
fd = openat(lo->proc_self_fd, procname, O_RDONLY);
if (fd < 0) {
goto out_err;
}
+ ret = flistxattr(fd, value, size);
+ if (ret == -1) {
+ goto out_err;
+ }
if (size) {
- value = malloc(size);
- if (!value) {
- goto out_err;
- }
-
- ret = flistxattr(fd, value, size);
- if (ret == -1) {
- goto out_err;
- }
saverr = 0;
if (ret == 0) {
goto out;
}
-
fuse_reply_buf(req, value, ret);
} else {
- ret = flistxattr(fd, NULL, 0);
- if (ret == -1) {
- goto out_err;
- }
-
fuse_reply_xattr(req, ret);
}
out_free:
@@ -2320,7 +2311,6 @@ out_free:
out_err:
saverr = errno;
out:
- lo_inode_put(lo, &inode);
fuse_reply_err(req, saverr);
goto out_free;
}
--
1.8.3.1