lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* Parsing of Suboptions Example |
| 2 | Copyright (C) 1991-2015 Free Software Foundation, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU General Public License |
| 6 | as published by the Free Software Foundation; either version 2 |
| 7 | of the License, or (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, if not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <unistd.h> |
| 21 | |
| 22 | int do_all; |
| 23 | const char *type; |
| 24 | int read_size; |
| 25 | int write_size; |
| 26 | int read_only; |
| 27 | |
| 28 | enum |
| 29 | { |
| 30 | RO_OPTION = 0, |
| 31 | RW_OPTION, |
| 32 | READ_SIZE_OPTION, |
| 33 | WRITE_SIZE_OPTION, |
| 34 | THE_END |
| 35 | }; |
| 36 | |
| 37 | const char *mount_opts[] = |
| 38 | { |
| 39 | [RO_OPTION] = "ro", |
| 40 | [RW_OPTION] = "rw", |
| 41 | [READ_SIZE_OPTION] = "rsize", |
| 42 | [WRITE_SIZE_OPTION] = "wsize", |
| 43 | [THE_END] = NULL |
| 44 | }; |
| 45 | |
| 46 | int |
| 47 | main (int argc, char **argv) |
| 48 | { |
| 49 | char *subopts, *value; |
| 50 | int opt; |
| 51 | |
| 52 | while ((opt = getopt (argc, argv, "at:o:")) != -1) |
| 53 | switch (opt) |
| 54 | { |
| 55 | case 'a': |
| 56 | do_all = 1; |
| 57 | break; |
| 58 | case 't': |
| 59 | type = optarg; |
| 60 | break; |
| 61 | case 'o': |
| 62 | subopts = optarg; |
| 63 | while (*subopts != '\0') |
| 64 | switch (getsubopt (&subopts, mount_opts, &value)) |
| 65 | { |
| 66 | case RO_OPTION: |
| 67 | read_only = 1; |
| 68 | break; |
| 69 | case RW_OPTION: |
| 70 | read_only = 0; |
| 71 | break; |
| 72 | case READ_SIZE_OPTION: |
| 73 | if (value == NULL) |
| 74 | abort (); |
| 75 | read_size = atoi (value); |
| 76 | break; |
| 77 | case WRITE_SIZE_OPTION: |
| 78 | if (value == NULL) |
| 79 | abort (); |
| 80 | write_size = atoi (value); |
| 81 | break; |
| 82 | default: |
| 83 | /* Unknown suboption. */ |
| 84 | printf ("Unknown suboption `%s'\n", value); |
| 85 | break; |
| 86 | } |
| 87 | break; |
| 88 | default: |
| 89 | abort (); |
| 90 | } |
| 91 | |
| 92 | /* Do the real work. */ |
| 93 | |
| 94 | return 0; |
| 95 | } |