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2015-03-13hw/9pfs/virtio-9p-posix-acl: Fix out-of-bounds accessShannon Zhao1-1/+1
It's detected by coverity. Fix out-of-bounds access of the function mp_dacl_listxattr. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2014-03-04hw/9pfs: use g_strdup_printf() instead of PATH_MAX limitationChen Gang1-14/+38
When path is truncated by PATH_MAX limitation, it causes QEMU to access incorrect file. So use original full path instead of PATH_MAX within 9pfs (need check/process ENOMEM for related memory allocation). The related test: - Environments (for qemu-devel): - Host is under fedora17 desktop with ext4fs: qemu-system-x86_64 -hda test.img -m 1024 \ -net nic,vlan=4,model=virtio,macaddr=00:16:35:AF:94:04 \ -net tap,vlan=4,ifname=tap4,script=no,downscript=no \ -device virtio-9p-pci,id=fs0,fsdev=fsdev0,mount_tag=hostshare \ -fsdev local,security_model=passthrough,id=fsdev0,\ path=/upstream/vm/data/share/1234567890abcdefghijklmnopqrstuvwxyz\ ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890acdefghijklmnopqrstuvwxyz\ ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890/111111111111111111111111111\ 1111111111111111111111111111111111111111111111111111222222222222\ 2222222222222222222222222222222222222222222222222222222222222222\ 2222222222222222222222222222222222233333333333333333333333333333\ 3333333333333333333333333333333333 - Guest is ubuntu12 server with 9pfs. mount -t 9p -o trans=virtio,version=9p2000.L hostshare /share - Limitations: full path limitation is PATH_MAX (4096B include nul) under Linux. file/dir node name maximized length is 256 (include nul) under ext4. - Special test: Under host, modify the file: "/upstream/vm/data/share/1234567890abcdefg\ hijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890acdefghijklmno\ pqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890/111111111111111111111\ 111111111111111111111111111111111111111111111111111111111122222222222\ 222222222222222222222222222222222222222222222222222222222222222222222\ 222222222222222222222222222222233333333333333333333333333333333333333\ 3333333333333333333333333/4444444444444444444444444444444444444444444\ 444444444444444444444444444444444444444444444444444444444444444444444\ 444444444444444444444444444444444444444444444444444444444444444444444\ 444444444444444444444444444444444444444/55555555555555555555555555555\ 555555555555555555555555555555555555555555555555555555555555555555555\ 555555555555555555555555555555555555555555555555555555555555555555555\ 555555555555555555555555555555555555555555555555555555555555555555555\ 55555555/666666666666666666666666666666666666666666666666666666666666\ 666666666666666666666666666666666666666666666666666666666666666666666\ 666666666666666666666666666666666666666666666666666666666666666666666\ 666666666666666666666/77777777777777777777777777777777777777777777777\ 777777777777777777777777777777777777777777777777777777777777777777777\ 777777777777777777777777777777777777777777777777777777777777777777777\ 77777777777777777777777777777777777777777777777777777777777/888888888\ 888888888888888888888888888888888888888888888888888888888888888888888\ 888888888888888888888888888888888888888888888888888888888888888888888\ 888888888888888888888888888888888888888888888888888888888888888888888\ 888888888/99999999999999999999999999999999999999999999999999999999999\ 999999999999999999999999999999999999999999999999999999999999999999999\ 999999999999999999999999999999999999999999999999999999999999999999999\ 99999999999999999999999999999999999999999/000000000000000000000000000\ 000000000000000000000000000000000000000000000000000000000000000000000\ 000000000000000000000000000000000000000000000000000000000000000000000\ 000000000000000000000000000000000000000000000000/aaaaaaaaaaaaaaaaaaaa\ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\ aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/bbbbbbbbbbbbbbbbbbbbbbb\ bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\ bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\ bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb/ccccccccc\ ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc\ ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc\ ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc\ cccccccccc/dddddddddddddddddddddddddddddddddddddddddddddddddddddddddd\ ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd\ ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd\ dddddddddddddddddddddd/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee\ eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee\ eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee\ eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/fffffffffffffff\ fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\ fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff\ ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff/gggggggggg\ ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg\ ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg\ ggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg\ ggggggggggggggggggggggg/iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii\ iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii\ iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii\ iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii/jjjjjjjjjjjjj\ jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj\ jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj/ppppppppppppppppppppp\ ppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp\ ppppppppppppppppppppppppppppppppppppppp/test1234567890file.log" (need enter dir firstly, then modify file, or can not open it). Under guest, still allow modify "test1234567890file.log" (will generate "test123456" file with contents). After apply this patch, can not open "test1234567890file.log" under guest (permission denied). - Common test: All are still OK after apply this path. "mkdir -p", "create/open file/dir", "modify file/dir", "rm file/dir". change various mount point paths under host and/or guest. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
2013-04-08hw: move headers to include/Paolo Bonzini1-1/+1
Many of these should be cleaned up with proper qdev-/QOM-ification. Right now there are many catch-all headers in include/hw/ARCH depending on cpu.h, and this makes it necessary to compile these files per-target. However, fixing this does not belong in these patches. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-19misc: move include files to include/qemu/Paolo Bonzini1-1/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-10-05virtio-9p: avoid unwarranted uses of strncpyJim Meyering1-2/+4
In all of these cases, the uses of strncpy were unnecessary, since at each point of use we know that the NUL-terminated source bytes fit in the destination buffer. Use memcpy in place of strncpy. Acked-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Jim Meyering <meyering@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-09configure: fix detection for xattr.h on modern distributionsAvi Kivity1-1/+1
Modern distributions place xattr.h in /usr/include/sys, and fold libattr.so into libc. They also don't have an ENOATTR. Make configure detect this, and add a qemu-xattr.h file that directs the #include to the right place. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-01[virtio-9p] Make rpath thread safeVenkateswararao Jujjuri (JV)1-6/+14
Current rpath inline function is heavily used in all system calls. This function has a static buffer making it a non-thread safe function. This patch introduces new thread-safe routine and makes use of it. Signed-off-by: Venkateswararao Jujjuri "<jvrao@linux.vnet.ibm.com>
2011-06-01virtio-9p: Use relative includes for files in hwStefan Weil1-1/+1
Commit 353ac78d495ef976242abd868f68d78420861c2c moved the files without fixing the include paths. It used a modified CFLAGS to add hw to the include search path, but this breaks builds where the user wants to set special CFLAGS. Long include paths also increase compilation time. Therefore this patch removes the special CFLAGS for virtio and fixes the include statements by using relative include paths. v2: Remove special CFLAGS. v3: Update needed for latest QEMU. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Venkateswararao Jujjuri (JV) <jvrao@linux.vnet.ibm.com>
2011-04-27virtio-9p: removexattr on default acl should return 0Aneesh Kumar K.V1-2/+13
If we don't have default acl, removexattr on default acl should return 0 Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
2011-04-27virtio-9p: move 9p files aroundAneesh Kumar K.V1-0/+140
Now that we start adding more files related to 9pfs it make sense to move them to a separate directory Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
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