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Checked file type on OpenIndiana when deleting a file with a reparse point

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On OpenIndiana a check is needed to ensure directories are not removed
by rm(1) and files not removed by rmdir(1)
This commit is contained in:
Jean-Pierre André 2021-01-26 10:06:17 +01:00
parent b086c9ef73
commit c3c5c77be3
1 changed files with 29 additions and 3 deletions
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32
src/lowntfs-3g.c
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@ -2650,6 +2650,9 @@ static int ntfs_fuse_rm(fuse_req_t req, fuse_ino_t parent, const char *name,
#if !KERNELPERMS | (POSIXACLS & !KERNELACLS)
struct SECURITY_CONTEXT security;
#endif
#if defined(__sun) && defined (__SVR4)
int isdir;
#endif /* defined(__sun) && defined (__SVR4) */
/* Deny removing from $Extend */
if (parent == FILE_Extend) {
@ -2689,9 +2692,32 @@ static int ntfs_fuse_rm(fuse_req_t req, fuse_ino_t parent, const char *name,
#if defined(__sun) && defined (__SVR4)
/* on Solaris : deny unlinking directories */
if (rm_type
== (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY ? RM_LINK : RM_DIR)) {
errno = EPERM;
isdir = ni->mrec->flags & MFT_RECORD_IS_DIRECTORY;
#ifndef DISABLE_PLUGINS
/* get emulated type from plugin if available */
if (ni->flags & FILE_ATTR_REPARSE_POINT) {
struct stat st;
const plugin_operations_t *ops;
REPARSE_POINT *reparse;
/* Avoid double opening of parent directory */
res = ntfs_inode_close(dir_ni);
if (res)
goto exit;
dir_ni = (ntfs_inode*)NULL;
res = CALL_REPARSE_PLUGIN(ni, getattr, &st);
if (res)
goto exit;
isdir = S_ISDIR(st.st_mode);
dir_ni = ntfs_inode_open(ctx->vol, INODE(parent));
if (!dir_ni) {
res = -errno;
goto exit;
}
}
#endif /* DISABLE_PLUGINS */
if (rm_type == (isdir ? RM_LINK : RM_DIR)) {
errno = (isdir ? EISDIR : ENOTDIR);
res = -errno;
goto exit;
}