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Diffstat (limited to 'REORG.TODO/manual/examples/subopt.c')
-rw-r--r-- | REORG.TODO/manual/examples/subopt.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/REORG.TODO/manual/examples/subopt.c b/REORG.TODO/manual/examples/subopt.c new file mode 100644 index 0000000000..278b6dbbc1 --- /dev/null +++ b/REORG.TODO/manual/examples/subopt.c @@ -0,0 +1,95 @@ +/* Parsing of Suboptions Example + Copyright (C) 1991-2017 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, if not, see <http://www.gnu.org/licenses/>. +*/ + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> + +int do_all; +const char *type; +int read_size; +int write_size; +int read_only; + +enum +{ + RO_OPTION = 0, + RW_OPTION, + READ_SIZE_OPTION, + WRITE_SIZE_OPTION, + THE_END +}; + +const char *mount_opts[] = +{ + [RO_OPTION] = "ro", + [RW_OPTION] = "rw", + [READ_SIZE_OPTION] = "rsize", + [WRITE_SIZE_OPTION] = "wsize", + [THE_END] = NULL +}; + +int +main (int argc, char **argv) +{ + char *subopts, *value; + int opt; + + while ((opt = getopt (argc, argv, "at:o:")) != -1) + switch (opt) + { + case 'a': + do_all = 1; + break; + case 't': + type = optarg; + break; + case 'o': + subopts = optarg; + while (*subopts != '\0') + switch (getsubopt (&subopts, mount_opts, &value)) + { + case RO_OPTION: + read_only = 1; + break; + case RW_OPTION: + read_only = 0; + break; + case READ_SIZE_OPTION: + if (value == NULL) + abort (); + read_size = atoi (value); + break; + case WRITE_SIZE_OPTION: + if (value == NULL) + abort (); + write_size = atoi (value); + break; + default: + /* Unknown suboption. */ + printf ("Unknown suboption `%s'\n", value); + break; + } + break; + default: + abort (); + } + + /* Do the real work. */ + + return 0; +} |