procexec/acct_view.c

+/* acct_view.c
+
+   Display contents of a process accounting file.
+*/
 #include <fcntl.h>
 #include <time.h>
 #include <sys/stat.h>
 #include <sys/acct.h>
 #include <limits.h>
 #include "ugid_functions.h"             /* Declaration of userNameFromId() */
 #include "tlpi_hdr.h"
 
 #define TIME_BUF_SIZE 100
 
 static long long                /* Convert comp_t value into long long */
 comptToLL(comp_t ct)
 {
     const int EXP_SIZE = 3;             /* 3-bit, base-8 exponent */
     const int MANTISSA_SIZE = 13;       /* Followed by 13-bit mantissa */
     const int MANTISSA_MASK = (1 << MANTISSA_SIZE) - 1;
     long long mantissa, exp;
 
     mantissa = ct & MANTISSA_MASK;
     exp = (ct >> MANTISSA_SIZE) & ((1 << EXP_SIZE) - 1);
     return mantissa << (exp * 3);       /* Power of 8 = left shift 3 bits */
 }
 
 int
 main(int argc, char *argv[])
 {
     int acctFile;
     struct acct ac;
     ssize_t numRead;
     char *s;
     char timeBuf[TIME_BUF_SIZE];
     struct tm *loc;
     time_t t;
 
     if (argc != 2 || strcmp(argv[1], "--help") == 0)
         usageErr("%s file\n", argv[0]);
 
     acctFile = open(argv[1], O_RDONLY);
     if (acctFile == -1)
         errExit("open");
 
     printf("command  flags   term.  user     "
             "start time            CPU   elapsed\n");
     printf("                status           "
             "                      time    time\n");
 
     while ((numRead = read(acctFile, &ac, sizeof(struct acct))) > 0) {
         if (numRead != sizeof(struct acct))
             fatal("partial read");
 
         printf("%-8.8s  ", ac.ac_comm);
 
         printf("%c", (ac.ac_flag & AFORK) ? 'F' : '-') ;
         printf("%c", (ac.ac_flag & ASU)   ? 'S' : '-') ;
+
+        /* Not all implementations support AXSIG and ACORE */
+
+#ifdef AXSIG
         printf("%c", (ac.ac_flag & AXSIG) ? 'X' : '-') ;
+#else
+        printf(" ");
+#endif
+#ifdef ACORE
         printf("%c", (ac.ac_flag & ACORE) ? 'C' : '-') ;
+#else
+        printf(" ");
+#endif
 
 #ifdef __linux__
         printf(" %#6lx   ", (unsigned long) ac.ac_exitcode);
 #else   /* Many other implementations provide ac_stat instead */
+        /* But the BSDs don't provide this field either */
+#if ! defined(__FreeBSD__) && ! defined(__NetBSD__) && \
+        ! defined(__APPLE__)
         printf(" %#6lx   ", (unsigned long) ac.ac_stat);
+#else
+        printf("          ");
+#endif
 #endif
 
         s = userNameFromId(ac.ac_uid);
         printf("%-8.8s ", (s == NULL) ? "???" : s);
 
         t = ac.ac_btime;
         loc = localtime(&t);
         if (loc == NULL) {
             printf("???Unknown time???  ");
         } else {
             strftime(timeBuf, TIME_BUF_SIZE, "%Y-%m-%d %T ", loc);
             printf("%s ", timeBuf);
         }
 
         printf("%5.2f %7.2f ", (double) (comptToLL(ac.ac_utime) +
                     comptToLL(ac.ac_stime)) / sysconf(_SC_CLK_TCK),
                 (double) comptToLL(ac.ac_etime) / sysconf(_SC_CLK_TCK));
         printf("\n");
     }
 
     if (numRead == -1)
         errExit("read");
 
     exit(EXIT_SUCCESS);
 }