LCOV - code coverage report
Current view: top level - udev - udev-builtin-uaccess.c (source / functions) Hit Total Coverage
Test: systemd_full.info Lines: 0 32 0.0 %
Date: 2019-08-23 13:36:53 Functions: 0 1 0.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 0 50 0.0 %

           Branch data     Line data    Source code
       1                 :            : /* SPDX-License-Identifier: GPL-2.0+ */
       2                 :            : /*
       3                 :            :  * manage device node user ACL
       4                 :            :  */
       5                 :            : 
       6                 :            : #include <errno.h>
       7                 :            : #include <stdio.h>
       8                 :            : #include <stdlib.h>
       9                 :            : #include <sys/stat.h>
      10                 :            : 
      11                 :            : #include "sd-login.h"
      12                 :            : 
      13                 :            : #include "device-util.h"
      14                 :            : #include "login-util.h"
      15                 :            : #include "logind-acl.h"
      16                 :            : #include "log.h"
      17                 :            : #include "udev-builtin.h"
      18                 :            : 
      19                 :          0 : static int builtin_uaccess(sd_device *dev, int argc, char *argv[], bool test) {
      20                 :          0 :         const char *path = NULL, *seat;
      21                 :          0 :         bool changed_acl = false;
      22                 :            :         uid_t uid;
      23                 :            :         int r;
      24                 :            : 
      25                 :          0 :         umask(0022);
      26                 :            : 
      27                 :            :         /* don't muck around with ACLs when the system is not running systemd */
      28         [ #  # ]:          0 :         if (!logind_running())
      29                 :          0 :                 return 0;
      30                 :            : 
      31                 :          0 :         r = sd_device_get_devname(dev, &path);
      32         [ #  # ]:          0 :         if (r < 0) {
      33   [ #  #  #  #  :          0 :                 log_device_error_errno(dev, r, "Failed to get device name: %m");
                   #  # ]
      34                 :          0 :                 goto finish;
      35                 :            :         }
      36                 :            : 
      37         [ #  # ]:          0 :         if (sd_device_get_property_value(dev, "ID_SEAT", &seat) < 0)
      38                 :          0 :                 seat = "seat0";
      39                 :            : 
      40                 :          0 :         r = sd_seat_get_active(seat, NULL, &uid);
      41         [ #  # ]:          0 :         if (r < 0) {
      42   [ #  #  #  # ]:          0 :                 if (IN_SET(r, -ENXIO, -ENODATA))
      43                 :            :                         /* No active session on this seat */
      44                 :          0 :                         r = 0;
      45                 :            :                 else
      46   [ #  #  #  #  :          0 :                         log_device_error_errno(dev, r, "Failed to determine active user on seat %s: %m", seat);
                   #  # ]
      47                 :            : 
      48                 :          0 :                 goto finish;
      49                 :            :         }
      50                 :            : 
      51                 :          0 :         r = devnode_acl(path, true, false, 0, true, uid);
      52         [ #  # ]:          0 :         if (r < 0) {
      53   [ #  #  #  #  :          0 :                 log_device_full(dev, r == -ENOENT ? LOG_DEBUG : LOG_ERR, r, "Failed to apply ACL: %m");
             #  #  #  # ]
      54                 :          0 :                 goto finish;
      55                 :            :         }
      56                 :            : 
      57                 :          0 :         changed_acl = true;
      58                 :          0 :         r = 0;
      59                 :            : 
      60                 :          0 : finish:
      61   [ #  #  #  # ]:          0 :         if (path && !changed_acl) {
      62                 :            :                 int k;
      63                 :            : 
      64                 :            :                 /* Better be safe than sorry and reset ACL */
      65                 :          0 :                 k = devnode_acl(path, true, false, 0, false, 0);
      66         [ #  # ]:          0 :                 if (k < 0) {
      67   [ #  #  #  #  :          0 :                         log_device_full(dev, k == -ENOENT ? LOG_DEBUG : LOG_ERR, k, "Failed to apply ACL: %m");
             #  #  #  # ]
      68         [ #  # ]:          0 :                         if (r >= 0)
      69                 :          0 :                                 r = k;
      70                 :            :                 }
      71                 :            :         }
      72                 :            : 
      73                 :          0 :         return r;
      74                 :            : }
      75                 :            : 
      76                 :            : const UdevBuiltin udev_builtin_uaccess = {
      77                 :            :         .name = "uaccess",
      78                 :            :         .cmd = builtin_uaccess,
      79                 :            :         .help = "Manage device node user ACL",
      80                 :            : };

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