ls:不允许操作
ls:不允许操作
提问于 2014-09-08 04:33:27
我有一个使用allow_other和umask 0选项的fuse fs。这给了我一组权限设置为777的文件。尽管当我试图在包含文件的目录中ls -l时，我得到了以下输出：
ls: name: Operation not permitted
ls: tags: Operation not permitted
ls: location: Operation not permitted
ls: ext: Operation not permitted
ls: experiment_id: Operation not permitted
ls: file_path: Operation not permitted有人能告诉我，为什么尽管我拥有全局权限(777)，但我仍然不允许操作？
在运行strace时，我得到以下跟踪：
lstat("tags", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lgetxattr("tags", "security.selinux", 0x112ae80, 255) = -1 EPERM (Operation not permitted)
write(2, "ls: ", 4ls: ) = 4
write(2, "tags", 4tags) = 4
write(2, ": Operation not permitted", 25: Operation not permitted) = 25
write(2, "\n", 1
) = 1
lstat("location", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lgetxattr("location", "security.selinux", 0x112aea0, 255) = -1 EPERM (Operation not permitted)
write(2, "ls: ", 4ls: ) = 4
write(2, "location", 8location) = 8
write(2, ": Operation not permitted", 25: Operation not permitted) = 25
write(2, "\n", 1) = 1
lstat("ext", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lgetxattr("ext", "security.selinux", 0x112aec0, 255) = -1 EPERM (Operation not permitted)
write(2, "ls: ", 4ls: ) = 4
write(2, "ext", 3ext) = 3
write(2, ": Operation not permitted", 25: Operation not permitted) = 25
write(2, "\n", 1) = 1
lstat("experiment_id", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lgetxattr("experiment_id", "security.selinux", 0x112aee0, 255) = -1 EPERM (Operation not permitted)
write(2, "ls: ", 4ls: ) = 4
write(2, "experiment_id", 13experiment_id) = 13
write(2, ": Operation not permitted", 25: Operation not permitted) = 25
write(2, "\n", 1) = 1
lstat("file_path", {st_mode=S_IFDIR|0777, st_size=4096, ...}) = 0
lgetxattr("file_path", "security.selinux", 0x112af00, 255) = -1 EPERM (Operation not permitted)
write(2, "ls: ", 4ls: ) = 4
write(2, "file_path", 9file_path) = 9
write(2, ": Operation not permitted", 25: Operation not permitted) = 25
write(2, "\n", 1) = 1因此，从跟踪来看，它似乎试图获得selinux属性，即使它在我的系统上是禁用的。
cat /etc//sysconfig/selinux
SELINUX=disabled
SELINUXTYPE=targetedStack Overflow用户
回答已采纳
发布于 2014-09-08 20:53:02
问题在于我的getxattr实现。我返回-1的错误，这是翻译成EPERM，相反，我应该返回ENODATA，这是更正确的错误情况下，我的逻辑。这也修正了这些错误。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/25717501
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