kes Modify run_program() and run_program_full_output() to use

     call by reference for the results string. This corrects a long
     standing problem where the address of the string may be changed
     in the subroutine but not in the calling program.

git-svn-id: https://bacula.svn.sourceforge.net/svnroot/bacula/trunk@6720 91ce42f0-d328-0410-95d8-f526ca767f89

diff --git a/bacula/src/lib/bpipe.c b/bacula/src/lib/bpipe.c
index 58a22eb70fe0c77e33fd5c4caa22ec2b04861b30..449cc7f805a654f05c0514ccd3ceabbbe5fe8448 100644 (file)
--- a/bacula/src/lib/bpipe.c
+++ b/bacula/src/lib/bpipe.c
@@ -326,45 +326,41 @@ static void build_argc_argv(char *cmd, int *bargc, char *bargv[], int max_argv)
  *  Returns: 0 on success
  *           non-zero on error == berrno status
  */
-int run_program(char *prog, int wait, POOLMEM *results)
+int run_program(char *prog, int wait, POOLMEM *&results)
 {
    BPIPE *bpipe;
    int stat1, stat2;
    char *mode;
 
-   mode = (char *)(results != NULL ? "r" : "");
+   mode = (char *)"r";
    bpipe = open_bpipe(prog, wait, mode);
    if (!bpipe) {
       return ENOENT;
    }
-   if (results) {
-      results[0] = 0;
-      int len = sizeof_pool_memory(results) - 1;
-      fgets(results, len, bpipe->rfd);
-      results[len] = 0;
-      if (feof(bpipe->rfd)) {
-         stat1 = 0;
-      } else {
-         stat1 = ferror(bpipe->rfd);
-      }
-      if (stat1 < 0) {
-         berrno be;
-         Dmsg2(150, "Run program fgets stat=%d ERR=%s\n", stat1, be.bstrerror(errno));
-      } else if (stat1 != 0) {
-         Dmsg1(150, "Run program fgets stat=%d\n", stat1);
-         if (bpipe->timer_id) {
-            Dmsg1(150, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
-            /* NB: I'm not sure it is really useful for run_program. Without the
-             * following lines run_program would not detect if the program was killed
-             * by the watchdog. */
-            if (bpipe->timer_id->killed) {
-               stat1 = ETIME;
-               pm_strcat(results, _("Program killed by Bacula watchdog (timeout)\n"));
-            }
+   results[0] = 0;
+   int len = sizeof_pool_memory(results) - 1;
+   fgets(results, len, bpipe->rfd);
+   results[len] = 0;
+   if (feof(bpipe->rfd)) {
+      stat1 = 0;
+   } else {
+      stat1 = ferror(bpipe->rfd);
+   }
+   if (stat1 < 0) {
+      berrno be;
+      Dmsg2(150, "Run program fgets stat=%d ERR=%s\n", stat1, be.bstrerror(errno));
+   } else if (stat1 != 0) {
+      Dmsg1(150, "Run program fgets stat=%d\n", stat1);
+      if (bpipe->timer_id) {
+         Dmsg1(150, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
+         /* NB: I'm not sure it is really useful for run_program. Without the
+          * following lines run_program would not detect if the program was killed
+          * by the watchdog. */
+         if (bpipe->timer_id->killed) {
+            stat1 = ETIME;
+            pm_strcpy(results, _("Program killed by Bacula (timeout)\n"));
          }
       }
-   } else {
-      stat1 = 0;
    }
    stat2 = close_bpipe(bpipe);
    stat1 = stat2 != 0 ? stat2 : stat1;
@@ -388,7 +384,7 @@ int run_program(char *prog, int wait, POOLMEM *results)
  *           non-zero on error == berrno status
  *
  */
-int run_program_full_output(char *prog, int wait, POOLMEM *results)
+int run_program_full_output(char *prog, int wait, POOLMEM *&results)
 {
    BPIPE *bpipe;
    int stat1, stat2;
@@ -397,21 +393,16 @@ int run_program_full_output(char *prog, int wait, POOLMEM *results)
    char *buf;
    const int bufsize = 32000;
 
-   if (results == NULL) {
-      return run_program(prog, wait, NULL);
-   }
    
    sm_check(__FILE__, __LINE__, false);
 
    tmp = get_pool_memory(PM_MESSAGE);
    buf = (char *)malloc(bufsize+1);
    
+   results[0] = 0;
    mode = (char *)"r";
    bpipe = open_bpipe(prog, wait, mode);
    if (!bpipe) {
-      if (results) {
-         results[0] = 0;
-      }
       return ENOENT;
    }
    
@@ -449,11 +440,10 @@ int run_program_full_output(char *prog, int wait, POOLMEM *results)
     */
    if (bpipe->timer_id && bpipe->timer_id->killed) {
       Dmsg1(150, "Run program fgets killed=%d\n", bpipe->timer_id->killed);
-      pm_strcat(tmp, _("Program killed by Bacula watchdog (timeout)\n"));
+      pm_strcpy(tmp, _("Program killed by Bacula (timeout)\n"));
       stat1 = ETIME;
    }
-   int len = sizeof_pool_memory(results) - 1;
-   bstrncpy(results, tmp, len);
+   pm_strcpy(results, tmp);
    Dmsg3(1900, "resadr=0x%x reslen=%d res=%s\n", results, strlen(results), results);
    stat2 = close_bpipe(bpipe);
    stat1 = stat2 != 0 ? stat2 : stat1;

diff --git a/bacula/src/lib/mem_pool.h b/bacula/src/lib/mem_pool.h
index 0dd7231af1812df43a985b5ff7da941d664d5f12..cd8dcad6d0dcca8a92ff722ddab8f9f60e681d27 100644 (file)
--- a/bacula/src/lib/mem_pool.h
+++ b/bacula/src/lib/mem_pool.h
@@ -91,6 +91,7 @@ public:
    POOL_MEM(int pool) { mem = get_pool_memory(pool); *mem = 0; }
    ~POOL_MEM() { free_pool_memory(mem); mem = NULL; }
    char *c_str() const { return mem; }
+   POOLMEM *&addr() { return mem; }
    int size() const { return sizeof_pool_memory(mem); }
    char *check_size(int32_t size) {
       mem = check_pool_memory_size(mem, size);

diff --git a/bacula/src/lib/protos.h b/bacula/src/lib/protos.h
index 8b5a1b908a364dc44dbb48993bb5eb2fd8d6fb61..4197b31e74b0651a7ddff3ff4e18a4483c83d62c 100644 (file)
--- a/bacula/src/lib/protos.h
+++ b/bacula/src/lib/protos.h
@@ -318,8 +318,8 @@ char *           encode_time             (time_t time, char *buf);
 char *           encode_mode             (mode_t mode, char *buf);
 int              do_shell_expansion      (char *name, int name_len);
 void             jobstatus_to_ascii      (int JobStatus, char *msg, int maxlen);
-int              run_program             (char *prog, int wait, POOLMEM *results);
-int              run_program_full_output (char *prog, int wait, POOLMEM *results);
+int              run_program             (char *prog, int wait, POOLMEM *&results);
+int              run_program_full_output (char *prog, int wait, POOLMEM *&results);
 const char *     job_type_to_str         (int type);
 const char *     job_status_to_str       (int stat);
 const char *     job_level_to_str        (int level);

diff --git a/bacula/src/stored/autochanger.c b/bacula/src/stored/autochanger.c
index cd0b19a84cd8ad28ce5eac77baf20ca21ff1e4a7..07596604de08243cb8509afc3e2d5cb7fba2417e 100644 (file)
--- a/bacula/src/stored/autochanger.c
+++ b/bacula/src/stored/autochanger.c
@@ -191,7 +191,7 @@ int autoload_device(DCR *dcr, int writing, BSOCK *dir)
          changer = edit_device_codes(dcr, changer, dcr->device->changer_command, "load");
          dev->close();
          Dmsg1(200, "Run program=%s\n", changer);
-         status = run_program_full_output(changer, timeout, results.c_str());
+         status = run_program_full_output(changer, timeout, results.addr());
          if (status == 0) {
             Jmsg(jcr, M_INFO, 0, _("3305 Autochanger \"load slot %d, drive %d\", status is OK.\n"),
                     slot, drive);
@@ -265,9 +265,8 @@ int get_autochanger_loaded_slot(DCR *dcr)
    Jmsg(jcr, M_INFO, 0, _("3301 Issuing autochanger \"loaded? drive %d\" command.\n"),
         drive);
    changer = edit_device_codes(dcr, changer, dcr->device->changer_command, "loaded");
-   *results.c_str() = 0;
    Dmsg1(100, "Run program=%s\n", changer);
-   status = run_program_full_output(changer, timeout, results.c_str());
+   status = run_program_full_output(changer, timeout, results.addr());
    Dmsg3(100, "run_prog: %s stat=%d result=%s", changer, status, results.c_str());
    if (status == 0) {
       loaded = str_to_int32(results.c_str());
@@ -333,6 +332,11 @@ bool unload_autochanger(DCR *dcr, int loaded)
       return false;
    }
 
+   /* Virtual disk autochanger */
+   if (dcr->device->changer_command[0] == 0) {
+      return true;
+   }
+
    if (loaded < 0) {
       loaded = get_autochanger_loaded_slot(dcr);
    }
@@ -350,8 +354,7 @@ bool unload_autochanger(DCR *dcr, int loaded)
                    dcr->device->changer_command, "unload");
       dev->close();
       Dmsg1(100, "Run program=%s\n", changer);
-      *results.c_str() = 0;
-      int stat = run_program_full_output(changer, timeout, results.c_str());
+      int stat = run_program_full_output(changer, timeout, results.addr());
       dcr->VolCatInfo.Slot = slot;
       if (stat != 0) {
          berrno be;
@@ -449,7 +452,7 @@ static bool unload_other_drive(DCR *dcr, int slot)
    Dmsg2(200, "close dev=%s reserve=%d\n", dev->print_name(), 
       dev->reserved_device);
    Dmsg1(100, "Run program=%s\n", changer_cmd);
-   int stat = run_program_full_output(changer_cmd, timeout, results.c_str());
+   int stat = run_program_full_output(changer_cmd, timeout, results.addr());
    dcr->VolCatInfo.Slot = save_slot;
    dcr->dev = save_dev;
    if (stat != 0) {

diff --git a/bacula/src/stored/dev.c b/bacula/src/stored/dev.c
index b2c772e5158a9a9be0ea19f596d83c1335ea5855..381986c68c30c6ff92c303e59d403b5637eb4c20 100644 (file)
--- a/bacula/src/stored/dev.c
+++ b/bacula/src/stored/dev.c
@@ -1,7 +1,7 @@
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
+   Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.
@@ -2053,7 +2053,6 @@ bool DEVICE::do_mount(int mount, int dotimeout)
       timeout = 0;
    }
    results = get_memory(4000);
-   results[0] = 0;
 
    /* If busy retry each second */
    Dmsg1(100, "do_mount run_prog=%s\n", ocmd.c_str());

diff --git a/bacula/src/stored/dvd.c b/bacula/src/stored/dvd.c
index 142027f44609f77fb77e5c6448063d793cfecd54..f798098bd0d468df169d3c1e1425df66adfca459 100644 (file)
--- a/bacula/src/stored/dvd.c
+++ b/bacula/src/stored/dvd.c
@@ -1,7 +1,7 @@
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2005-2007 Free Software Foundation Europe e.V.
+   Copyright (C) 2005-2008 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.
@@ -254,7 +254,7 @@ bool dvd_write_part(DCR *dcr)
    }
 
    Dmsg2(20, "Write part: cmd=%s timeout=%d\n", ocmd.c_str(), timeout);
-   status = run_program_full_output(ocmd.c_str(), timeout, results.c_str());
+   status = run_program_full_output(ocmd.c_str(), timeout, results.addr());
    Dmsg2(20, "Write part status=%d result=%s\n", status, results.c_str());
 
    dev->blank_dvd = false;

diff --git a/bacula/src/stored/stored.c b/bacula/src/stored/stored.c
index 94d466168df46ae17270c82db05b2fdc82c0cb52..e4a4d6eb49c195c6e21731d35d75ca64d4ee6a35 100644 (file)
--- a/bacula/src/stored/stored.c
+++ b/bacula/src/stored/stored.c
@@ -1,7 +1,7 @@
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2000-2007 Free Software Foundation Europe e.V.
+   Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.
@@ -445,6 +445,7 @@ static int check_resources()
 static void cleanup_old_files()
 {
    POOLMEM *cleanup = get_pool_memory(PM_MESSAGE);
+   POOLMEM *results = get_pool_memory(PM_MESSAGE);
    int len = strlen(me->working_directory);
 #if defined(HAVE_WIN32)
    pm_strcpy(cleanup, "del /q ");
@@ -457,8 +458,9 @@ static void cleanup_old_files()
    }
    pm_strcat(cleanup, my_name);
    pm_strcat(cleanup, "*.spool");
-   run_program(cleanup, 0, NULL);
+   run_program(cleanup, 0, results);
    free_pool_memory(cleanup);
+   free_pool_memory(results);
 }
 
 

diff --git a/bacula/src/version.h b/bacula/src/version.h
index 30f1147f9269b03572deb1c62e0ecfdcb9ec5de6..b619bfc92894ae3a7d10c09996f73dc9f853a02b 100644 (file)
--- a/bacula/src/version.h
+++ b/bacula/src/version.h
@@ -4,8 +4,8 @@
 
 #undef  VERSION
 #define VERSION "2.3.14"
-#define BDATE   "31 March 2008"
-#define LSMDATE "31Mar08"
+#define BDATE   "01 April 2008"
+#define LSMDATE "01Apr08"
 
 #define PROG_COPYRIGHT "Copyright (C) %d-2008 Free Software Foundation Europe e.V.\n"
 #define BYEAR "2008"       /* year for copyright messages in progs */

diff --git a/bacula/technotes-2.3 b/bacula/technotes-2.3
index b7dd8ccac312207a949b039a1c5c9d8dc26e207e..9a6b380cf68fdcf49cfbfa6fdf9b5c8139a1d08a 100644 (file)
--- a/bacula/technotes-2.3
+++ b/bacula/technotes-2.3
@@ -24,6 +24,19 @@ Add long term statistics job table
 
 
 General:
+02Apr08
+kes  Modify run_program() and run_program_full_output() to use
+     call by reference for the results string. This corrects a long
+     standing problem where the address of the string may be changed
+     in the subroutine but not in the calling program.
+01Apr08
+kes  Re-enable code to remember last volume mounted on a non-tape
+     Autochanger.
+kes  Add patch supplied in bug #1068 that fixes a SD crash when using
+     a Virtual autochanger.
+kes  Generate correct JobMedia records during spooling/despooling when
+     running concurrent jobs.  Thanks to Tom Ivar Helbekkmo
+     <tih@hamartun.priv.no> for excellent analysis and testing.
 31Mar08
 kes  Tweak hash algorithm for htable using Martin Simmons idea
      for doing a circular shift.