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getxattr for user.mergerfs.{base,full}path returns the source paths. closes #23

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This commit is contained in:
Antonio SJ Musumeci
2014-07-30 15:26:49 -04:00
parent 7b0d703f00
commit b82db46e29
1 changed files with 25 additions and 1 deletions
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src/getxattr.cpp
+25 -1
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@@ -74,6 +74,25 @@ _getxattr_controlfile(const Config &config,
return (int)len;
}
static
int
_getxattr_from_string(char *destbuf,
const size_t destbufsize,
const string &src)
{
const size_t srcbufsize = src.size();
if(destbufsize == 0)
return srcbufsize;
if(srcbufsize > destbufsize)
return (errno = ERANGE, -1);
memcpy(destbuf,src.data(),srcbufsize);
return srcbufsize;
}
static
int
_getxattr(const fs::SearchFunc searchFunc,
@@ -91,7 +110,12 @@ _getxattr(const fs::SearchFunc searchFunc,
if(paths.empty())
return -ENOENT;
rv = ::lgetxattr(paths[0].full.c_str(),attrname,buf,count);
if(!strcmp(attrname,"user.mergerfs.basepath"))
rv = ::_getxattr_from_string(buf,count,paths[0].base);
else if(!strcmp(attrname,"user.mergerfs.fullpath"))
rv = ::_getxattr_from_string(buf,count,paths[0].full);
else
rv = ::lgetxattr(paths[0].full.c_str(),attrname,buf,count);
return ((rv == -1) ? -errno : rv);
#else