source3/modules/vfs_aixacl.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    VFS module to get and set posix acls
   4    Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2006
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21 #include "system/filesys.h"
  22 #include "smbd/smbd.h"
  23
  24 extern SMB_ACL_T aixacl_to_smbacl( struct acl *file_acl);
  25 extern struct acl *aixacl_smb_to_aixacl(SMB_ACL_TYPE_T acltype, SMB_ACL_T theacl);
  26
  27 SMB_ACL_T aixacl_sys_acl_get_file(vfs_handle_struct *handle,
  28                                     const char *path_p,
  29                                     SMB_ACL_TYPE_T type)
  30 {
  31         struct acl *file_acl = (struct acl *)NULL;
  32         struct smb_acl_t *result = (struct smb_acl_t *)NULL;
  33
  34         int rc = 0;
  35         uid_t user_id;
  36
  37         /* AIX has no DEFAULT */
  38         if  ( type == SMB_ACL_TYPE_DEFAULT )
  39                 return NULL;
  40
  41         /* Get the acl using statacl */
  42
  43         DEBUG(10,("Entering AIX sys_acl_get_file\n"));
  44         DEBUG(10,("path_p is %s\n",path_p));
  45
  46         file_acl = (struct acl *)SMB_MALLOC(BUFSIZ);
  47
  48         if(file_acl == NULL) {
  49                 errno=ENOMEM;
  50                 DEBUG(0,("Error in AIX sys_acl_get_file: %d\n",errno));
  51                 return(NULL);
  52         }
  53
  54         memset(file_acl,0,BUFSIZ);
  55
  56         rc = statacl((char *)path_p,0,file_acl,BUFSIZ);
  57         if( (rc == -1) && (errno == ENOSPC)) {
  58                 struct acl *new_acl = SMB_MALLOC(file_acl->acl_len + sizeof(struct acl));
  59                 if( new_acl == NULL) {
  60                         SAFE_FREE(file_acl);
  61                         errno = ENOMEM;
  62                         return NULL;
  63                 }
  64                 file_acl = new_acl;
  65                 rc = statacl((char *)path_p,0,file_acl,file_acl->acl_len+sizeof(struct acl));
  66                 if( rc == -1) {
  67                         DEBUG(0,("statacl returned %d with errno %d\n",rc,errno));
  68                         SAFE_FREE(file_acl);
  69                         return(NULL);
  70                 }
  71         }
  72
  73         DEBUG(10,("Got facl and returned it\n"));
  74
  75
  76         result = aixacl_to_smbacl(file_acl);
  77         SAFE_FREE(file_acl);
  78         return result;
  79
  80         /*errno = ENOTSUP;
  81         return NULL;*/
  82 }
  83
  84 SMB_ACL_T aixacl_sys_acl_get_fd(vfs_handle_struct *handle,
  85                                 files_struct *fsp)
  86 {
  87
  88         struct acl *file_acl = (struct acl *)NULL;
  89         struct smb_acl_t *result = (struct smb_acl_t *)NULL;
  90
  91         int rc = 0;
  92         uid_t user_id;
  93
  94         /* Get the acl using fstatacl */
  95
  96         DEBUG(10,("Entering AIX sys_acl_get_fd\n"));
  97         DEBUG(10,("fd is %d\n",fsp->fh->fd));
  98         file_acl = (struct acl *)SMB_MALLOC(BUFSIZ);
  99
 100         if(file_acl == NULL) {
 101                 errno=ENOMEM;
 102                 DEBUG(0,("Error in AIX sys_acl_get_fd is %d\n",errno));
 103                 return(NULL);
 104         }
 105
 106         memset(file_acl,0,BUFSIZ);
 107
 108         rc = fstatacl(fsp->fh->fd,0,file_acl,BUFSIZ);
 109         if( (rc == -1) && (errno == ENOSPC)) {
 110                 struct acl *new_acl = SMB_MALLOC(file_acl->acl_len + sizeof(struct acl));
 111                 if( new_acl == NULL) {
 112                         SAFE_FREE(file_acl);
 113                         errno = ENOMEM;
 114                         return NULL;
 115                 }
 116                 file_acl = new_acl;
 117                 rc = fstatacl(fsp->fh->fd,0,file_acl,file_acl->acl_len + sizeof(struct acl));
 118                 if( rc == -1) {
 119                         DEBUG(0,("fstatacl returned %d with errno %d\n",rc,errno));
 120                         SAFE_FREE(file_acl);
 121                         return(NULL);
 122                 }
 123         }
 124
 125         DEBUG(10,("Got facl and returned it\n"));
 126
 127         result = aixacl_to_smbacl(file_acl);
 128         SAFE_FREE(file_acl);
 129         return result;
 130
 131         /*errno = ENOTSUP;
 132         return NULL;*/
 133 }
 134
 135 int aixacl_sys_acl_set_file(vfs_handle_struct *handle,
 136                               const char *name,
 137                               SMB_ACL_TYPE_T type,
 138                               SMB_ACL_T theacl)
 139 {
 140         struct acl *file_acl = NULL;
 141         unsigned int rc;
 142
 143         file_acl = aixacl_smb_to_aixacl(type, theacl);
 144         if (!file_acl)
 145                 return -1;
 146
 147         rc = chacl((char *)name,file_acl,file_acl->acl_len);
 148         DEBUG(10,("errno is %d\n",errno));
 149         DEBUG(10,("return code is %d\n",rc));
 150         SAFE_FREE(file_acl);
 151         DEBUG(10,("Exiting the aixacl_sys_acl_set_file\n"));
 152
 153         return rc;
 154 }
 155
 156 int aixacl_sys_acl_set_fd(vfs_handle_struct *handle,
 157                             files_struct *fsp,
 158                             SMB_ACL_T theacl)
 159 {
 160         struct acl *file_acl = NULL;
 161         unsigned int rc;
 162
 163         file_acl = aixacl_smb_to_aixacl(SMB_ACL_TYPE_ACCESS, theacl);
 164         if (!file_acl)
 165                 return -1;
 166
 167         rc = fchacl(fsp->fh->fd,file_acl,file_acl->acl_len);
 168         DEBUG(10,("errno is %d\n",errno));
 169         DEBUG(10,("return code is %d\n",rc));
 170         SAFE_FREE(file_acl);
 171         DEBUG(10,("Exiting aixacl_sys_acl_set_fd\n"));
 172
 173         return rc;
 174 }
 175
 176 int aixacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
 177                                      const char *path)
 178 {
 179         return 0; /* otherwise you can't set acl at upper level */
 180 }
 181
 182 static struct vfs_fn_pointers vfs_aixacl_fns = {
 183         .sys_acl_get_file_fn = aixacl_sys_acl_get_file,
 184         .sys_acl_get_fd_fn = aixacl_sys_acl_get_fd,
 185         .sys_acl_set_file_fn = aixacl_sys_acl_set_file,
 186         .sys_acl_set_fd_fn = aixacl_sys_acl_set_fd,
 187         .sys_acl_delete_def_file_fn = aixacl_sys_acl_delete_def_file,
 188 };
 189
 190 NTSTATUS vfs_aixacl_init(void);
 191 NTSTATUS vfs_aixacl_init(void)
 192 {
 193         return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "aixacl",
 194                                 &vfs_aixacl_fns);
 195 }