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Disabled getting/setting DOS names on hardlinked files 

As the path passed to ntfs-3g for getxattr(2)/setxattr(2) are not
guaranteed to be the one mentioned by the caller when there are hard links,
getting/setting DOS names have to be discontinued in that situation.
Getting/setting DOS names is still possible when there is a single
non-DOS name.
edge.strict_endians
Jean-Pierre André 2012-10-03 11:23:58 +02:00
parent 559270a8f6
commit 67fa6273cf
1 changed files with 22 additions and 2 deletions
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24
libntfs-3g/dir.c
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@ -2277,6 +2277,8 @@ ntfs_inode *ntfs_dir_parent_inode(ntfs_inode *ni)
/*
* Get a DOS name for a file in designated directory
*
* Not allowed if there are several non-dos names (EMLINK)
*
* Returns size if found
* 0 if not found
* -1 if there was an error (described by errno)
@ -2285,6 +2287,7 @@ ntfs_inode *ntfs_dir_parent_inode(ntfs_inode *ni)
static int get_dos_name(ntfs_inode *ni, u64 dnum, ntfschar *dosname)
{
size_t outsize = 0;
int namecount = 0;
FILE_NAME_ATTR *fn;
ntfs_attr_search_ctx *ctx;
@ -2299,6 +2302,8 @@ static int get_dos_name(ntfs_inode *ni, u64 dnum, ntfschar *dosname)
fn = (FILE_NAME_ATTR*)((u8*)ctx->attr +
le16_to_cpu(ctx->attr->value_offset));
if (fn->file_name_type != FILE_NAME_DOS)
namecount++;
if ((fn->file_name_type & FILE_NAME_DOS)
&& (MREF_LE(fn->parent_directory) == dnum)) {
/*
@ -2313,6 +2318,10 @@ static int get_dos_name(ntfs_inode *ni, u64 dnum, ntfschar *dosname)
}
}
ntfs_attr_put_search_ctx(ctx);
if ((outsize > 0) && (namecount > 1)) {
outsize = -1;
errno = EMLINK; /* this error implies there is a dos name */
}
return (outsize);
}
@ -2320,6 +2329,8 @@ static int get_dos_name(ntfs_inode *ni, u64 dnum, ntfschar *dosname)
/*
* Get a long name for a file in designated directory
*
* Not allowed if there are several non-dos names (EMLINK)
*
* Returns size if found
* 0 if not found
* -1 if there was an error (described by errno)
@ -2328,6 +2339,7 @@ static int get_dos_name(ntfs_inode *ni, u64 dnum, ntfschar *dosname)
static int get_long_name(ntfs_inode *ni, u64 dnum, ntfschar *longname)
{
size_t outsize = 0;
int namecount = 0;
FILE_NAME_ATTR *fn;
ntfs_attr_search_ctx *ctx;
@ -2343,6 +2355,8 @@ static int get_long_name(ntfs_inode *ni, u64 dnum, ntfschar *longname)
fn = (FILE_NAME_ATTR*)((u8*)ctx->attr +
le16_to_cpu(ctx->attr->value_offset));
if (fn->file_name_type != FILE_NAME_DOS)
namecount++;
if ((fn->file_name_type & FILE_NAME_WIN32)
&& (MREF_LE(fn->parent_directory) == dnum)) {
/*
@ -2352,6 +2366,10 @@ static int get_long_name(ntfs_inode *ni, u64 dnum, ntfschar *longname)
outsize = fn->file_name_length;
memcpy(longname,fn->file_name,outsize*sizeof(ntfschar));
}
}
if (namecount > 1) {
errno = EMLINK;
return -1;
}
/* if not found search for POSIX names */
if (!outsize) {
@ -2673,7 +2691,8 @@ int ntfs_set_ntfs_dos_name(ntfs_inode *ni, ntfs_inode *dir_ni,
res = -1;
} else {
res = -1;
errno = ENOENT;
if (!longlen)
errno = ENOENT;
}
free(shortname);
if (!closed) {
@ -2749,7 +2768,8 @@ int ntfs_remove_ntfs_dos_name(ntfs_inode *ni, ntfs_inode *dir_ni)
}
}
} else {
errno = ENOENT;
if (!longlen)
errno = ENOENT;
res = -1;
}
if (!deleted) {