From: Stefan Weil <sw@weilnetz.de>
To: QEMU Developer <qemu-devel@nongnu.org>
Cc: Stefan Weil <sw@weilnetz.de>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: [Qemu-devel] [PATCH v2] virtio: Fix memory leaks reported by Coverity
Date: Sat, 14 Mar 2015 11:45:18 +0100 [thread overview]
Message-ID: <1426329918-4846-1-git-send-email-sw@weilnetz.de> (raw)
All four leaks are similar, so fix them in one patch.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
---
v1 only fixed one of those leaks.
v2 fixes all similar leaks.
hw/9pfs/virtio-9p-local.c | 28 ++++++++--------------------
1 file changed, 8 insertions(+), 20 deletions(-)
diff --git a/hw/9pfs/virtio-9p-local.c b/hw/9pfs/virtio-9p-local.c
index d05c917..d66abcd 100644
--- a/hw/9pfs/virtio-9p-local.c
+++ b/hw/9pfs/virtio-9p-local.c
@@ -488,7 +488,7 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
int err = -1;
int serrno = 0;
V9fsString fullname;
- char *buffer;
+ char *buffer = NULL;
v9fs_string_init(&fullname);
v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
@@ -499,7 +499,6 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
buffer = rpath(fs_ctx, path);
err = mknod(buffer, SM_LOCAL_MODE_BITS|S_IFREG, 0);
if (err == -1) {
- g_free(buffer);
goto out;
}
err = local_set_xattr(buffer, credp);
@@ -512,7 +511,6 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
buffer = rpath(fs_ctx, path);
err = mknod(buffer, SM_LOCAL_MODE_BITS|S_IFREG, 0);
if (err == -1) {
- g_free(buffer);
goto out;
}
err = local_set_mapped_file_attr(fs_ctx, path, credp);
@@ -525,7 +523,6 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
buffer = rpath(fs_ctx, path);
err = mknod(buffer, credp->fc_mode, credp->fc_rdev);
if (err == -1) {
- g_free(buffer);
goto out;
}
err = local_post_create_passthrough(fs_ctx, path, credp);
@@ -539,8 +536,8 @@ static int local_mknod(FsContext *fs_ctx, V9fsPath *dir_path,
err_end:
remove(buffer);
errno = serrno;
- g_free(buffer);
out:
+ g_free(buffer);
v9fs_string_free(&fullname);
return err;
}
@@ -552,7 +549,7 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
int err = -1;
int serrno = 0;
V9fsString fullname;
- char *buffer;
+ char *buffer = NULL;
v9fs_string_init(&fullname);
v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
@@ -563,7 +560,6 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
buffer = rpath(fs_ctx, path);
err = mkdir(buffer, SM_LOCAL_DIR_MODE_BITS);
if (err == -1) {
- g_free(buffer);
goto out;
}
credp->fc_mode = credp->fc_mode|S_IFDIR;
@@ -576,7 +572,6 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
buffer = rpath(fs_ctx, path);
err = mkdir(buffer, SM_LOCAL_DIR_MODE_BITS);
if (err == -1) {
- g_free(buffer);
goto out;
}
credp->fc_mode = credp->fc_mode|S_IFDIR;
@@ -590,7 +585,6 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
buffer = rpath(fs_ctx, path);
err = mkdir(buffer, credp->fc_mode);
if (err == -1) {
- g_free(buffer);
goto out;
}
err = local_post_create_passthrough(fs_ctx, path, credp);
@@ -604,8 +598,8 @@ static int local_mkdir(FsContext *fs_ctx, V9fsPath *dir_path,
err_end:
remove(buffer);
errno = serrno;
- g_free(buffer);
out:
+ g_free(buffer);
v9fs_string_free(&fullname);
return err;
}
@@ -659,7 +653,7 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
int err = -1;
int serrno = 0;
V9fsString fullname;
- char *buffer;
+ char *buffer = NULL;
/*
* Mark all the open to not follow symlinks
@@ -675,7 +669,6 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
buffer = rpath(fs_ctx, path);
fd = open(buffer, flags, SM_LOCAL_MODE_BITS);
if (fd == -1) {
- g_free(buffer);
err = fd;
goto out;
}
@@ -690,7 +683,6 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
buffer = rpath(fs_ctx, path);
fd = open(buffer, flags, SM_LOCAL_MODE_BITS);
if (fd == -1) {
- g_free(buffer);
err = fd;
goto out;
}
@@ -706,7 +698,6 @@ static int local_open2(FsContext *fs_ctx, V9fsPath *dir_path, const char *name,
buffer = rpath(fs_ctx, path);
fd = open(buffer, flags, credp->fc_mode);
if (fd == -1) {
- g_free(buffer);
err = fd;
goto out;
}
@@ -724,8 +715,8 @@ err_end:
close(fd);
remove(buffer);
errno = serrno;
- g_free(buffer);
out:
+ g_free(buffer);
v9fs_string_free(&fullname);
return err;
}
@@ -738,7 +729,7 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
int serrno = 0;
char *newpath;
V9fsString fullname;
- char *buffer;
+ char *buffer = NULL;
v9fs_string_init(&fullname);
v9fs_string_sprintf(&fullname, "%s/%s", dir_path->data, name);
@@ -751,7 +742,6 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
buffer = rpath(fs_ctx, newpath);
fd = open(buffer, O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW, SM_LOCAL_MODE_BITS);
if (fd == -1) {
- g_free(buffer);
err = fd;
goto out;
}
@@ -781,7 +771,6 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
buffer = rpath(fs_ctx, newpath);
fd = open(buffer, O_CREAT|O_EXCL|O_RDWR|O_NOFOLLOW, SM_LOCAL_MODE_BITS);
if (fd == -1) {
- g_free(buffer);
err = fd;
goto out;
}
@@ -810,7 +799,6 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
buffer = rpath(fs_ctx, newpath);
err = symlink(oldpath, buffer);
if (err) {
- g_free(buffer);
goto out;
}
err = lchown(buffer, credp->fc_uid, credp->fc_gid);
@@ -831,8 +819,8 @@ static int local_symlink(FsContext *fs_ctx, const char *oldpath,
err_end:
remove(buffer);
errno = serrno;
- g_free(buffer);
out:
+ g_free(buffer);
v9fs_string_free(&fullname);
return err;
}
--
1.7.10.4
next reply other threads:[~2015-03-14 10:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-14 10:45 Stefan Weil [this message]
2015-03-16 8:32 ` [Qemu-devel] [PATCH v2] virtio: Fix memory leaks reported by Coverity Aneesh Kumar K.V
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