How to determine which Berkeley DB version is used for RPM's database?












1















I am attempting to read and write the RPM database located in /var/lib/rpm under CentOS 5, and eventually other system types (CentOS 6, RHEL, etc.)



The problem is that I don't know what version of Berkeley DB is being used.



The file command on the database file reports "data".



I tried opening the database using Berkeley DB versions 3.3, 4.4 and 6.1, but that fails with "Invalid argument".



Here is the code I am using (this for 4.4/6.1)



int main()
{
#define DATABASE "__db.001"

DB *dbp;
int ret;

if ((ret = db_create(&dbp, NULL, 0)) != 0) {
fprintf(stderr, "db_create: %sn", db_strerror(ret));
exit (1);
}

if ((ret = dbp->open(
dbp, NULL, DATABASE, NULL, DB_UNKNOWN, 0, 0664)) != 0) {
dbp->err(dbp, ret, "%s", DATABASE);
exit(1);
}
}


Any hints about what is going wrong?










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    1















    I am attempting to read and write the RPM database located in /var/lib/rpm under CentOS 5, and eventually other system types (CentOS 6, RHEL, etc.)



    The problem is that I don't know what version of Berkeley DB is being used.



    The file command on the database file reports "data".



    I tried opening the database using Berkeley DB versions 3.3, 4.4 and 6.1, but that fails with "Invalid argument".



    Here is the code I am using (this for 4.4/6.1)



    int main()
    {
    #define DATABASE "__db.001"

    DB *dbp;
    int ret;

    if ((ret = db_create(&dbp, NULL, 0)) != 0) {
    fprintf(stderr, "db_create: %sn", db_strerror(ret));
    exit (1);
    }

    if ((ret = dbp->open(
    dbp, NULL, DATABASE, NULL, DB_UNKNOWN, 0, 0664)) != 0) {
    dbp->err(dbp, ret, "%s", DATABASE);
    exit(1);
    }
    }


    Any hints about what is going wrong?










    share|improve this question
















    bumped to the homepage by Community 3 hours ago


    This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.


















      1












      1








      1








      I am attempting to read and write the RPM database located in /var/lib/rpm under CentOS 5, and eventually other system types (CentOS 6, RHEL, etc.)



      The problem is that I don't know what version of Berkeley DB is being used.



      The file command on the database file reports "data".



      I tried opening the database using Berkeley DB versions 3.3, 4.4 and 6.1, but that fails with "Invalid argument".



      Here is the code I am using (this for 4.4/6.1)



      int main()
      {
      #define DATABASE "__db.001"

      DB *dbp;
      int ret;

      if ((ret = db_create(&dbp, NULL, 0)) != 0) {
      fprintf(stderr, "db_create: %sn", db_strerror(ret));
      exit (1);
      }

      if ((ret = dbp->open(
      dbp, NULL, DATABASE, NULL, DB_UNKNOWN, 0, 0664)) != 0) {
      dbp->err(dbp, ret, "%s", DATABASE);
      exit(1);
      }
      }


      Any hints about what is going wrong?










      share|improve this question
















      I am attempting to read and write the RPM database located in /var/lib/rpm under CentOS 5, and eventually other system types (CentOS 6, RHEL, etc.)



      The problem is that I don't know what version of Berkeley DB is being used.



      The file command on the database file reports "data".



      I tried opening the database using Berkeley DB versions 3.3, 4.4 and 6.1, but that fails with "Invalid argument".



      Here is the code I am using (this for 4.4/6.1)



      int main()
      {
      #define DATABASE "__db.001"

      DB *dbp;
      int ret;

      if ((ret = db_create(&dbp, NULL, 0)) != 0) {
      fprintf(stderr, "db_create: %sn", db_strerror(ret));
      exit (1);
      }

      if ((ret = dbp->open(
      dbp, NULL, DATABASE, NULL, DB_UNKNOWN, 0, 0664)) != 0) {
      dbp->err(dbp, ret, "%s", DATABASE);
      exit(1);
      }
      }


      Any hints about what is going wrong?







      rpm c database






      share|improve this question















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      edited Jun 17 '15 at 2:59









      Braiam

      23.7k2077140




      23.7k2077140










      asked Jun 17 '15 at 2:46









      Craig S. AndersonCraig S. Anderson

      1064




      1064





      bumped to the homepage by Community 3 hours ago


      This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.







      bumped to the homepage by Community 3 hours ago


      This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.
























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          It turns out that the files in /var/lib/rpm with db in their names are not Berkeley database files. The files with no db in their names are Berkeley database files.



          So trying to open a file named __db.001 is the wrong thing to do.



          (Thought about just deleting the question, but other people may run into this).






          share|improve this answer























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            0














            It turns out that the files in /var/lib/rpm with db in their names are not Berkeley database files. The files with no db in their names are Berkeley database files.



            So trying to open a file named __db.001 is the wrong thing to do.



            (Thought about just deleting the question, but other people may run into this).






            share|improve this answer




























              0














              It turns out that the files in /var/lib/rpm with db in their names are not Berkeley database files. The files with no db in their names are Berkeley database files.



              So trying to open a file named __db.001 is the wrong thing to do.



              (Thought about just deleting the question, but other people may run into this).






              share|improve this answer


























                0












                0








                0







                It turns out that the files in /var/lib/rpm with db in their names are not Berkeley database files. The files with no db in their names are Berkeley database files.



                So trying to open a file named __db.001 is the wrong thing to do.



                (Thought about just deleting the question, but other people may run into this).






                share|improve this answer













                It turns out that the files in /var/lib/rpm with db in their names are not Berkeley database files. The files with no db in their names are Berkeley database files.



                So trying to open a file named __db.001 is the wrong thing to do.



                (Thought about just deleting the question, but other people may run into this).







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Jun 17 '15 at 2:57









                Craig S. AndersonCraig S. Anderson

                1064




                1064






























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