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[Qemu-devel] [PATCHv2 06/22] hw/9pfs: avoid buffer overrun
From: |
Jim Meyering |
Subject: |
[Qemu-devel] [PATCHv2 06/22] hw/9pfs: avoid buffer overrun |
Date: |
Wed, 30 May 2012 09:46:25 +0200 |
From: Jim Meyering <address@hidden>
v9fs_add_dir_node and qemu_v9fs_synth_add_file used strncpy
to form node->name, which requires NUL-termination, but
strncpy does not ensure NUL-termination.
Use pstrcpy, which does.
Acked-by: Aneesh Kumar K.V <address@hidden>
Signed-off-by: Jim Meyering <address@hidden>
---
hw/9pfs/virtio-9p-synth.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/hw/9pfs/virtio-9p-synth.c b/hw/9pfs/virtio-9p-synth.c
index 92e0b09..e95a856 100644
--- a/hw/9pfs/virtio-9p-synth.c
+++ b/hw/9pfs/virtio-9p-synth.c
@@ -58,7 +58,7 @@ static V9fsSynthNode *v9fs_add_dir_node(V9fsSynthNode
*parent, int mode,
node->attr->read = NULL;
}
node->private = node;
- strncpy(node->name, name, sizeof(node->name));
+ pstrcpy(node->name, sizeof(node->name), name);
QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling);
return node;
}
@@ -132,7 +132,7 @@ int qemu_v9fs_synth_add_file(V9fsSynthNode *parent, int
mode,
node->attr->write = write;
node->attr->mode = mode;
node->private = arg;
- strncpy(node->name, name, sizeof(node->name));
+ pstrcpy(node->name, sizeof(node->name), name);
QLIST_INSERT_HEAD_RCU(&parent->child, node, sibling);
ret = 0;
err_out:
--
1.7.10.2.605.gbefc5ed
- [Qemu-devel] [PATCHv2 00/22] strncpy: best avoided, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 03/22] block: avoid buffer overrun by using pstrcpy, not strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 01/22] scsi, pci, qdev, isa-bus, sysbus: don't let *_get_fw_dev_path return NULL, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 07/22] lm32: avoid buffer overrun, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 02/22] sparc: use g_strdup in place of unchecked strdup, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 04/22] sheepdog: avoid a few buffer overruns, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 05/22] vmdk: relative_path: use pstrcpy in place of strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 08/22] os-posix: avoid buffer overrun, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 06/22] hw/9pfs: avoid buffer overrun,
Jim Meyering <=
- [Qemu-devel] [PATCHv2 10/22] linux-user: remove two unchecked uses of strdup, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 16/22] qemu-ga: prefer pstrcpy: consistently NUL-terminate ifreq.ifr_name, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 12/22] bt: replace fragile snprintf use and unwarranted strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 13/22] virtio-9p: avoid unwarranted uses of strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 09/22] ppc: avoid buffer overrun: use pstrcpy, not strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 11/22] ui/vnc: simplify and avoid strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 19/22] qcow2: mark this file's sole strncpy use as justified, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 14/22] vscsi: avoid unwarranted strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 17/22] libcacard/vcard_emul_nss: use pstrcpy in place of strncpy, Jim Meyering, 2012/05/30
- [Qemu-devel] [PATCHv2 22/22] doc: update HACKING wrt strncpy/pstrcpy, Jim Meyering, 2012/05/30