| 1 | #include <stdio.h> |
| 2 | |
| 3 | #define NMOUNT 16 |
| 4 | #define NAMSIZ 32 |
| 5 | |
| 6 | struct mtab { |
| 7 | char file[NAMSIZ]; |
| 8 | char spec[NAMSIZ]; |
| 9 | } mtab[NMOUNT]; |
| 10 | |
| 11 | main(argc, argv) |
| 12 | char **argv; |
| 13 | { |
| 14 | register int ro; |
| 15 | register struct mtab *mp; |
| 16 | register char *np; |
| 17 | int mf; |
| 18 | |
| 19 | mf = open("/etc/mtab", 0); |
| 20 | read(mf, (char *)mtab, NMOUNT*2*NAMSIZ); |
| 21 | if (argc==1) { |
| 22 | for (mp = mtab; mp < &mtab[NMOUNT]; mp++) |
| 23 | if (mp->file[0]) |
| 24 | printf("%s on %s\n", mp->spec, mp->file); |
| 25 | exit(0); |
| 26 | } |
| 27 | if(argc < 3) { |
| 28 | fprintf(stderr,"arg count\n"); |
| 29 | exit(1); |
| 30 | } |
| 31 | ro = 0; |
| 32 | if(argc > 3) |
| 33 | ro++; |
| 34 | if(mount(argv[1], argv[2], ro) < 0) { |
| 35 | perror("mount"); |
| 36 | exit(1); |
| 37 | } |
| 38 | np = argv[1]; |
| 39 | while(*np++) |
| 40 | ; |
| 41 | np--; |
| 42 | while(*--np == '/') |
| 43 | *np = '\0'; |
| 44 | while(np > argv[1] && *--np != '/') |
| 45 | ; |
| 46 | if(*np == '/') |
| 47 | np++; |
| 48 | argv[1] = np; |
| 49 | for (mp = mtab; mp < &mtab[NMOUNT]; mp++) { |
| 50 | if (mp->file[0] == 0) { |
| 51 | for (np = mp->spec; np < &mp->spec[NAMSIZ-1];) |
| 52 | if ((*np++ = *argv[1]++) == 0) |
| 53 | argv[1]--; |
| 54 | for (np = mp->file; np < &mp->file[NAMSIZ-1];) |
| 55 | if ((*np++ = *argv[2]++) == 0) |
| 56 | argv[2]--; |
| 57 | mp = &mtab[NMOUNT]; |
| 58 | while ((--mp)->file[0] == 0); |
| 59 | mf = creat("/etc/mtab", 0644); |
| 60 | write(mf, (char *)mtab, (mp-mtab+1)*2*NAMSIZ); |
| 61 | exit(0); |
| 62 | } |
| 63 | } |
| 64 | exit(0); |
| 65 | } |