BSD 4_1c_2 release

[unix-history] / usr / src / etc / swapon.c

static char *sccsid = "@(#)swapon.c     4.4 (Berkeley) 10/16/80";
#include <stdio.h>
#include <fstab.h>

#define VSWAPON 85

main(argc, argv)
       int argc;
       char *argv[];
{
       int stat = 0;

       --argc, argv++;
       if (argc == 0) {
               fprintf(stderr, "usage: swapon name...\n");
               exit(1);
       }
       if (argc == 1 && !strcmp(*argv, "-a")) {
               struct  fstab   *fsp;
               if (setfsent() == 0)
                       perror(FSTAB), exit(1);
               while ( (fsp = getfsent()) != 0){
                       if (strcmp(fsp->fs_type, FSTAB_SW) != 0)
                               continue;
                       printf("Adding %s as swap device\n",
                           fsp->fs_spec);
                       if (syscall(VSWAPON, fsp->fs_spec) == -1) {
                               extern errno;
                               extern char *sys_errlist[];
                               printf("%s: %s\n",
                                   sys_errlist[errno]);
                               stat = 1;
                       }
               }
               endfsent();
               exit(stat);
       }
       do {
               if (syscall(VSWAPON, *argv++) == -1) {
                       stat = 1;
                       perror(argv[-1]);
               }
               argc--;
       } while (argc > 0);
       exit(stat);
}