adding calls to fstab routines

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

static char *sccsid = "@(#)swapon.c     4.2 (Berkeley) %G%";
#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")) {
               FILE    *fs_file;
               struct  fstab   fs;
               if ((fs_file = fopen(FSTAB, "r")) == NULL){
                       perror(FSTAB);
                       exit(1);
               }
               while (!feof(fs_file)){
                       fscanf(fs_file, FSTABFMT, FSTABARG(&fs));
                       if (strcmp(fs.fs_type, "sw"))
                               continue;
                       fprintf(stderr, "Adding %s as swap device\n",
                           fs.fs_spec);
                       if (syscall(VSWAPON, fs.fs_spec) == -1) {
                               perror(fs.fs_spec);
                               stat = 1;
                       }
               }
               fclose(fs_file);
               exit(stat);
       }
       do {
               if (syscall(VSWAPON, *argv++) == -1) {
                       stat = 1;
                       perror(argv[-1]);
               }
               argc--;
       } while (argc > 0);
       exit(stat);
}