Re: SIGSEGV while secure copy

[Thomas Glanzmann]

On Mon, 13 May 2002, Thomas Glanzmann wrote:

I recompiled and it worked ... something strange happend ... The executable was
staically linked ...

Sorry for the false alert!

        Thomas

> cfengine:faui05h:   (Change owner to uid 31210 if possible)
> cfengine:faui05h:   (Change group to gid 30003 if possible)
> cfengine:faui05h: Checking link from 
> /usr/local.stand/kde-1.1.2/.arch.os.i386.linux/lib/libmimelib.so to 
> libmimelib.so.1.0.0
> Not checking whether link pointed object exists
> cfengine:faui05h:   (Change owner to uid 31210 if possible)
> cfengine:faui05h:   (Change group to gid 30003 if possible)
> cfengine:faui05h: 
> /usr/local.stand/kde-1.1.2/.arch.os.i386.linux/lib/libmimelib.la wasn't at 
> destination (copying)
> cfengine:faui05h:   (Change owner to uid 31210 if possible)
> cfengine:faui05h:   (Change group to gid 30003 if possible)
>
> Program received signal SIGSEGV, Segmentation fault.
> 0x0817519c in strncpy ()
> (gdb) bt
> #0  0x0817519c in strncpy ()
> #1  0x08059435 in cfreaddir (cfdirh=0x82a6080, ip=0x82bbe70) at image.c:1186
> #2  0x080572a0 in RecursiveImage (ip=0x82bbe70,
>     from=0xbfff9adc "/raid/lexec/kde-1.1.2/.arch.os.i386.linux/lib",
>     to=0xbfff8adc "/usr/local.stand/kde-1.1.2/.arch.os.i386.linux/lib",
>     maxrecurse=8) at image.c:92
> #3  0x0805726d in RecursiveImage (ip=0x82bbe70,
>     from=0xbfffbbcc "/raid/lexec/kde-1.1.2/.arch.os.i386.linux",
>     to=0xbfffabcc "/usr/local.stand/kde-1.1.2/.arch.os.i386.linux",
>     maxrecurse=9) at image.c:191
> #4  0x0805726d in RecursiveImage (ip=0x82bbe70,
>     from=0xbfffecb4 "/raid/lexec/kde-1.1.2",
>     to=0xbfffdcb4 "/usr/local.stand/kde-1.1.2", maxrecurse=10) at image.c:191
> #5  0x080506c5 in MakeImages () at do.c:2372
> #6  0x0804a4f4 in DoTree (passes=2, info=0x81c8316 "Main Tree")
>     at cfagent.c:1146
> #7  0x080483f2 in main (argc=3, argv=0xbffffdc4) at cfagent.c:155
>
> If someone needs more information I can provide them of course.
>
> Any ideas? cfengine is linked statically!
>
> I try to recompile it.
>
> struct cfdirent *cfreaddir(cfdirh,ip)
>
> CFDIR *cfdirh;
> struct Image *ip;
>
>   /* We need this cfdirent type to handle the weird hack */
>   /* used in SVR4/solaris dirent structures              */
>
> { static struct cfdirent dir;
>   struct dirent *dirp;
>
> bzero(dir.d_name,bufsize);
>
> if (strcmp(ip->server,"localhost") == 0)
>    {
>    dirp = readdir(cfdirh->cf_dirh);
>
>    if (dirp == NULL)
>       {
>       return NULL;
>       }
>    strncpy(dir.d_name,dirp->d_name,bufsize);
>    return &dir;
>    }
> else
>    {
>    if (cfdirh->cf_listpos != NULL)
>       {
>       strncpy(dir.d_name,(cfdirh->cf_listpos)->name,bufsize);              /* 
> here we crash bufsize is 4096*/
>       cfdirh->cf_listpos = cfdirh->cf_listpos->next;
>       return &dir;
>       }
>    else
>       {
>       return NULL;
>       }
>    }
> }
>
>
>
>
> --
> Thomas Glanzmann            +49 1212 5 269 38 260
> Rathsbergerstrasse 28 D-91054 Erlangen / Burgberg
>
>