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Improved opening/closing $Secure when un/mounting NTFS volume

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Call ntfs_close_secure() earlier, check for error, and other cleanups

Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
This commit is contained in:
Jean-Pierre André 2016-09-02 08:30:07 +02:00
parent d4dfa18f7d
commit 32587b485c
3 changed files with 20 additions and 12 deletions
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2
include/ntfs-3g/security.h
View File

@ -256,7 +256,7 @@ int ntfs_set_owner_mode(struct SECURITY_CONTEXT *scx,
le32 ntfs_inherited_id(struct SECURITY_CONTEXT *scx,
ntfs_inode *dir_ni, BOOL fordir);
int ntfs_open_secure(ntfs_volume *vol);
void ntfs_close_secure(ntfs_volume *vol);
int ntfs_close_secure(ntfs_volume *vol);
void ntfs_destroy_security_context(struct SECURITY_CONTEXT *scx);

26
libntfs-3g/security.c
View File

@ -4468,8 +4468,8 @@ int ntfs_set_ntfs_attrib(ntfs_inode *ni,
/*
* Open the volume's security descriptor index ($Secure)
*
* returns zero if it succeeds
* non-zero if it fails and the NTFS version is at least v3.x
* returns 0 if it succeeds
* -1 with errno set if it fails and the volume is NTFS v3.0+
*/
int ntfs_open_secure(ntfs_volume *vol)
{
@ -4484,8 +4484,8 @@ int ntfs_open_secure(ntfs_volume *vol)
if (!ni)
goto err;
/* Verify that $Secure has the expected inode number. */
if (ni->mft_no != FILE_Secure) {
ntfs_log_error("$Secure does not have expected inode number!");
errno = EINVAL;
goto err_close_ni;
}
@ -4499,9 +4499,9 @@ int ntfs_open_secure(ntfs_volume *vol)
if (!sdh)
goto err_close_sii;
vol->secure_ni = ni;
vol->secure_xsii = sii;
vol->secure_xsdh = sdh;
vol->secure_xsii = sii;
vol->secure_ni = ni;
return 0;
err_close_sii:
@ -4509,24 +4509,30 @@ err_close_sii:
err_close_ni:
ntfs_inode_close(ni);
err:
/* Failing on NTFS versions before 3.x is expected */
/* Failing on NTFS pre-v3.0 is expected. */
if (vol->major_ver < 3)
return 0;
ntfs_log_perror("error opening $Secure");
ntfs_log_perror("Failed to open $Secure");
return -1;
}
/*
* Close the volume's security descriptor index ($Secure)
*
* returns 0 if it succeeds
* -1 with errno set if it fails
*/
void ntfs_close_secure(ntfs_volume *vol)
int ntfs_close_secure(ntfs_volume *vol)
{
int res = 0;
if (vol->secure_ni) {
ntfs_index_ctx_put(vol->secure_xsii);
ntfs_index_ctx_put(vol->secure_xsdh);
ntfs_inode_close(vol->secure_ni);
ntfs_index_ctx_put(vol->secure_xsii);
res = ntfs_inode_close(vol->secure_ni);
vol->secure_ni = NULL;
}
return res;
}
/*

4
libntfs-3g/volume.c
View File

@ -173,6 +173,9 @@ static int __ntfs_volume_release(ntfs_volume *v)
{
int err = 0;
if (ntfs_close_secure(v))
ntfs_error_set(&err);
if (ntfs_inode_free(&v->vol_ni))
ntfs_error_set(&err);
/*
@ -207,7 +210,6 @@ static int __ntfs_volume_release(ntfs_volume *v)
ntfs_error_set(&err);
}
ntfs_close_secure(v);
ntfs_free_lru_caches(v);
free(v->vol_name);
free(v->upcase);