Index: stable/9/usr.bin/at
===================================================================
--- stable/9/usr.bin/at	(revision 252030)
+++ stable/9/usr.bin/at	(working copy)

Property changes on: stable/9/usr.bin/at
___________________________________________________________________
Added: svn:mergeinfo
   Merged /head/usr.bin/at:r226702,227006,228761,228857,229067,229538,229997,230127,230555,231544,232274,232322,232994,233121,234206,234449,234772,234782,235915,236338,236346,236365,238514,240605,240954,248112,249406
   Merged /vendor/resolver/dist/usr.bin/at:r1540-186085
   Merged /projects/largeSMP/usr.bin/at:r221273-222812,222815-223757
   Merged /projects/quota64/usr.bin/at:r184125-207707
Index: stable/9/usr.bin/at/at.c
===================================================================
--- stable/9/usr.bin/at/at.c	(revision 252030)
+++ stable/9/usr.bin/at/at.c	(working copy)
@@ -533,6 +533,10 @@
     /* Delete every argument (job - ID) given
      */
     int i;
+    int rc;
+    int nofJobs;
+    int nofDone;
+    int statErrno;
     struct stat buf;
     DIR *spool;
     struct dirent *dirent;
@@ -540,6 +544,9 @@
     char queue;
     long jobno;
 
+    nofJobs = argc - optind;
+    nofDone = 0;
+
     PRIV_START
 
     if (chdir(ATJOB_DIR) != 0)
@@ -555,9 +562,20 @@
     while((dirent = readdir(spool)) != NULL) {
 
 	PRIV_START
-	if (stat(dirent->d_name, &buf) != 0)
-	    perr("cannot stat in " ATJOB_DIR);
+	rc = stat(dirent->d_name, &buf);
+	statErrno = errno;
 	PRIV_END
+	/* There's a race condition between readdir above and stat here:
+	 * another atrm process could have removed the file from the spool
+	 * directory under our nose. If this happens, stat will set errno to
+	 * ENOENT, which we shouldn't treat as fatal.
+	 */
+	if (rc != 0) {
+	    if (statErrno == ENOENT)
+		continue;
+	    else
+		perr("cannot stat in " ATJOB_DIR);
+	}
 
 	if(sscanf(dirent->d_name, "%c%5lx%8lx", &queue, &jobno, &ctm)!=3)
 	    continue;
@@ -603,9 +621,15 @@
 		    errx(EXIT_FAILURE, "internal error, process_jobs = %d",
 			what);
 	        }
+
+		/* All arguments have been processed
+		 */
+		if (++nofDone == nofJobs)
+		    goto end;
 	    }
 	}
     }
+end:
     closedir(spool);
 } /* delete_jobs */