Line data    Source code

       1             : /*
       2             :  *  Unix SMB/CIFS implementation.
       3             :  *
       4             :  *  Process utils.
       5             :  *
       6             :  *  Copyright (c) 2013      Andreas Schneider <asn@samba.org>
       7             :  *
       8             :  *  This program is free software; you can redistribute it and/or modify
       9             :  *  it under the terms of the GNU General Public License as published by
      10             :  *  the Free Software Foundation; either version 3 of the License, or
      11             :  *  (at your option) any later version.
      12             :  *
      13             :  *  This program is distributed in the hope that it will be useful,
      14             :  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      16             :  *  GNU General Public License for more details.
      17             :  *
      18             :  *  You should have received a copy of the GNU General Public License
      19             :  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
      20             :  */
      21             : 
      22             : #include "util_process.h"
      23             : #include "replace.h"
      24             : 
      25             : #ifdef HAVE_SYS_PRCTL_H
      26             : #include <sys/prctl.h>
      27             : #endif
      28             : 
      29             : /*
      30             :  * These variables are static so that we can access them
      31             :  * with process_get_short_title() and process_get_long_title().  The
      32             :  * purpose of this is to allow smb_panic_log() to print them.
      33             :  */
      34             : static char short_comment[16] = {0,};
      35             : static char long_comment[256] = {0,};
      36             : static char binary_name[256];
      37             : 
      38       47953 : void process_set_title(const char *short_format, const char *long_format, ...)
      39             : {
      40             : #if defined(HAVE_PRCTL) && defined(PR_SET_NAME)
      41       47953 :         if (short_format != NULL) {
      42         902 :                 va_list ap;
      43             : 
      44       47953 :                 va_start(ap, long_format);
      45       47953 :                 vsnprintf(short_comment, sizeof(short_comment), short_format, ap);
      46       47953 :                 va_end(ap);
      47             : 
      48       47953 :                 prctl(PR_SET_NAME, (unsigned long) short_comment, 0, 0, 0);
      49             :         }
      50             : #endif
      51             : 
      52       47953 :         if (long_format != NULL) {
      53         902 :                 va_list ap;
      54             : 
      55       47953 :                 va_start(ap, long_format);
      56       47953 :                 vsnprintf(long_comment, sizeof(long_comment), long_format, ap);
      57       47953 :                 va_end(ap);
      58             : 
      59       47953 :                 setproctitle("%s", long_comment);
      60             :         }
      61       47953 : }
      62             : 
      63           0 : const char *process_get_short_title(void)
      64             : {
      65           0 :         return short_comment;
      66             : }
      67             : 
      68           0 : const char *process_get_long_title(void)
      69             : {
      70           0 :         return long_comment;
      71             : }
      72             : 
      73             : /*
      74             :  * This is just for debugging in a panic, so we don't want to do
      75             :  * anything more than return a fixed pointer, so we save a copy to a
      76             :  * static variable.
      77             :  */
      78       27092 : void process_save_binary_name(const char *progname)
      79             : {
      80       27092 :         strlcpy(binary_name, progname, sizeof(binary_name));
      81       27092 : }
      82             : 
      83             : /* Samba binaries will set this during popt handling */
      84           0 : const char *process_get_saved_binary_name(void)
      85             : {
      86           0 :         return binary_name;
      87             : }
      88             : 
      89             : 
      90           0 : int prctl_set_comment(const char *comment_format, ...)
      91             : {
      92           0 :         char comment[16];
      93           0 :         va_list ap;
      94             : 
      95           0 :         va_start(ap, comment_format);
      96           0 :         vsnprintf(comment, sizeof(comment), comment_format, ap);
      97           0 :         va_end(ap);
      98             : 
      99           0 :         process_set_title("%s", "%s", comment);
     100           0 :         return 0;
     101             : }