budd@bu-cs.BU.EDU (Philip Budne) (01/21/87)
Here is a context diff to 4.3 file.c that tries to identify a core
file, and type out the name of the command which dumped. The idea
comes from SUNos (!) but SUN core files are different (they start with
a magic number for one thing).
Its less than full graceful, since it re-reads the top of the file,
but hey, it works.
*** file.c.orig Thu Mar 6 19:34:29 1986
--- file.c Tue Jan 20 12:14:30 1987
***************
*** 6,11 ****
--- 6,13 ----
*/
#include <sys/param.h>
+ #include <sys/dir.h> /* budd for user.h */
+ #include <sys/user.h> /* budd */
#include <sys/stat.h>
#include <stdio.h>
#include <ctype.h>
***************
*** 288,295 ****
for(i=0; i < in; i++)if(buf[i]&0200){
if (buf[0]=='\100' && buf[1]=='\357')
printf("troff (CAT) output\n");
! else
! printf("data\n");
return;
}
if (mbuf.st_mode&((S_IEXEC)|(S_IEXEC>>3)|(S_IEXEC>>6))) {
--- 290,311 ----
for(i=0; i < in; i++)if(buf[i]&0200){
if (buf[0]=='\100' && buf[1]=='\357')
printf("troff (CAT) output\n");
! else { /* budd ... */
! union {
! struct user us;
! char pad[UPAGES][NBPG];
! } u_;
! # define u u_.us
! lseek( ifile, 0L, 0);
! if( read(ifile, &u_, sizeof u_ ) == sizeof u_ ) {
! int p = UPAGES + u.u_dsize + u.u_ssize;
! if( p * NBPG == mbuf.st_size ) {
! printf("core from %s\n", u.u_comm );
! return;
! }
! }
! printf("data\n");
! } /* ... budd */
return;
}
if (mbuf.st_mode&((S_IEXEC)|(S_IEXEC>>3)|(S_IEXEC>>6))) {